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MxChat – AI Chatbot & Content Generation for WordPress / 1.3
MxChat – AI Chatbot & Content Generation for WordPress v1.3
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← All changes | includes/class-mxchat-integrator.php +1546 -10787 3.2.2 → 1.3 View file →
@@ -1,10787 +1,1546 @@
1 -<?php
2 -if (!defined('ABSPATH')) {
3 - exit;
4 -}
5 -
6 -class MxChat_Integrator {
7 - private $options;
8 - private $prompts_options;
9 - private $chat_count;
10 - private $fallbackResponse;
11 - private $productCardHtml;
12 - private $word_handler;
13 - private $last_similarity_analysis = null;
14 - private $current_valid_urls = [];
15 - private $last_vectorstore_error = null;
16 - private $is_streaming = false; // ADDED: Track if current request is streaming
17 - private $streaming_headers_sent = false; // Track if streaming headers have been sent
18 -
19 -/**
20 - * Setup streaming headers - call this right before actually streaming
21 - * This delays header setup to allow actions/forms to return JSON responses
22 - */
23 -private function setup_streaming_headers() {
24 - if ($this->streaming_headers_sent || headers_sent()) {
25 - return false;
26 - }
27 -
28 - // Disable output buffering
29 - while (ob_get_level()) {
30 - ob_end_flush();
31 - }
32 -
33 - // Set headers for SSE
34 - header('Content-Type: text/event-stream');
35 - header('Cache-Control: no-cache');
36 - header('Connection: keep-alive');
37 - header('X-Accel-Buffering: no');
38 -
39 - ob_implicit_flush(true);
40 - flush();
41 -
42 - $this->streaming_headers_sent = true;
43 - return true;
44 -}
45 -
46 -/**
47 - * Class constructor
48 - */
49 -public function __construct() {
50 - $this->options = get_option('mxchat_options');
51 - $this->prompts_options = get_option('mxchat_prompts_options', array());
52 - $this->chat_count = get_option('mxchat_chat_count', 0);
53 - $this->word_handler = new MXChat_Word_Handler($this->options);
54 -
55 - // Add all action hooks
56 - add_action('wp_enqueue_scripts', array($this, 'mxchat_enqueue_scripts_styles'));
57 - add_action('wp_ajax_mxchat_handle_chat_request', array($this, 'mxchat_handle_chat_request'));
58 - add_action('wp_ajax_nopriv_mxchat_handle_chat_request', array($this, 'mxchat_handle_chat_request'));
59 - add_action('wp_ajax_mxchat_dismiss_pre_chat_message', array($this, 'mxchat_dismiss_pre_chat_message'));
60 - add_action('wp_ajax_nopriv_mxchat_dismiss_pre_chat_message', array($this, 'mxchat_dismiss_pre_chat_message'));
61 -
62 - // Add the AJAX actions for checking if the pre-chat message was dismissed
63 - add_action('wp_ajax_mxchat_check_pre_chat_message_status', array($this, 'mxchat_check_pre_chat_message_status'));
64 - add_action('wp_ajax_nopriv_mxchat_check_pre_chat_message_status', array($this, 'mxchat_check_pre_chat_message_status'));
65 - add_action('wp_ajax_mxchat_fetch_conversation_history', [$this, 'mxchat_fetch_conversation_history']);
66 - add_action('wp_ajax_nopriv_mxchat_fetch_conversation_history', [$this, 'mxchat_fetch_conversation_history']);
67 - add_action('wp_ajax_mxchat_add_to_cart', [$this, 'mxchat_add_to_cart']);
68 - add_action('wp_ajax_nopriv_mxchat_add_to_cart', [$this, 'mxchat_add_to_cart']);
69 -
70 - // Add REST API routes registration
71 - add_action('rest_api_init', array($this, 'register_routes'));
72 - add_action('wp_ajax_mxchat_fetch_new_messages', array($this, 'mxchat_fetch_new_messages'));
73 - add_action('wp_ajax_nopriv_mxchat_fetch_new_messages', array($this, 'mxchat_fetch_new_messages'));
74 -
75 - // Rate limit action - notice we removed the old schedule setup
76 - add_action('mxchat_reset_rate_limits', array($this, 'mxchat_reset_rate_limits'));
77 -
78 - // File upload and handling actions
79 - add_action('wp_ajax_mxchat_upload_pdf', [$this, 'handle_pdf_upload']);
80 - add_action('wp_ajax_nopriv_mxchat_upload_pdf', [$this, 'handle_pdf_upload']);
81 - add_action('wp_ajax_mxchat_remove_pdf', [$this, 'handle_pdf_remove']);
82 - add_action('wp_ajax_nopriv_mxchat_remove_pdf', [$this, 'handle_pdf_remove']);
83 -
84 - // Word document handling actions
85 - add_action('wp_ajax_mxchat_upload_word', array($this, 'mxchat_handle_word_upload'));
86 - add_action('wp_ajax_nopriv_mxchat_upload_word', array($this, 'mxchat_handle_word_upload'));
87 - add_action('wp_ajax_mxchat_remove_word', array($this, 'mxchat_handle_word_remove'));
88 - add_action('wp_ajax_nopriv_mxchat_remove_word', array($this, 'mxchat_handle_word_remove'));
89 - add_action('wp_ajax_mxchat_check_word_status', array($this, 'mxchat_check_word_status'));
90 - add_action('wp_ajax_nopriv_mxchat_check_word_status', array($this, 'mxchat_check_word_status'));
91 -
92 - // Email handling actions
93 - add_action('wp_ajax_nopriv_mxchat_handle_save_email_and_response', [$this, 'mxchat_handle_save_email_and_response']);
94 - add_action('wp_ajax_mxchat_handle_save_email_and_response', [$this, 'mxchat_handle_save_email_and_response']);
95 - add_action('wp_ajax_nopriv_mxchat_check_email_provided', [$this, 'mxchat_check_email_provided']);
96 - add_action('wp_ajax_mxchat_check_email_provided', [$this, 'mxchat_check_email_provided']);
97 -
98 - add_action('wp_ajax_mxchat_stream_chat', array($this, 'mxchat_handle_chat_request'));
99 - add_action('wp_ajax_nopriv_mxchat_stream_chat', array($this, 'mxchat_handle_chat_request'));
100 -
101 - // Testing panel AJAX actions
102 - add_action('wp_ajax_mxchat_get_system_info', array($this, 'mxchat_get_system_info'));
103 - add_action('wp_ajax_mxchat_get_similarity_threshold', array($this, 'mxchat_get_similarity_threshold'));
104 - add_action('wp_ajax_mxchat_get_kb_status', array($this, 'mxchat_get_kb_status'));
105 - add_action('wp_ajax_mxchat_start_fresh_session', array($this, 'mxchat_start_fresh_session'));
106 - // Add to your existing constructor, in the section with other AJAX actions:
107 - add_action('wp_ajax_mxchat_track_url_click', array($this, 'mxchat_track_url_click'));
108 - add_action('wp_ajax_nopriv_mxchat_track_url_click', array($this, 'mxchat_track_url_click'));
109 - add_action('wp_ajax_mxchat_track_originating_page', array($this, 'mxchat_track_originating_page'));
110 - add_action('wp_ajax_nopriv_mxchat_track_originating_page', array($this, 'mxchat_track_originating_page'));
111 - // Add chat mode checking actions
112 - add_action('wp_ajax_mxchat_get_current_chat_mode', array($this, 'mxchat_get_current_chat_mode'));
113 - add_action('wp_ajax_nopriv_mxchat_get_current_chat_mode', array($this, 'mxchat_get_current_chat_mode'));
114 -
115 - // Nonce refresh for page-cache compatibility (WP Rocket, LiteSpeed, etc.)
116 - add_action('wp_ajax_mxchat_refresh_nonce', array($this, 'mxchat_refresh_nonce'));
117 - add_action('wp_ajax_nopriv_mxchat_refresh_nonce', array($this, 'mxchat_refresh_nonce'));
118 -
119 - // Auto-email transcript action
120 - add_action('mxchat_send_delayed_transcript', array($this, 'mxchat_send_delayed_transcript'), 10, 1);
121 -
122 - add_filter('mxchat_check_actions_only', array($this, 'check_actions_for_addons'), 10, 4);
123 -
124 -
125 -}
126 -
127 -/**
128 - * Return a fresh nonce so cached pages can replace the stale one.
129 - */
130 -public function mxchat_refresh_nonce() {
131 - nocache_headers();
132 - wp_send_json_success(array('nonce' => wp_create_nonce('mxchat_chat_nonce')));
133 -}
134 -
135 -// In your core plugin's check_actions_for_addons method:
136 -public function check_actions_for_addons($default, $message, $user_id, $session_id) {
137 - //error_log('MxChat Core: check_actions_for_addons called with message: ' . $message);
138 -
139 - $result = $this->mxchat_check_intent_and_invoke_callback($message, $user_id, $session_id);
140 -
141 - //error_log('MxChat Core: Intent check result = ' . ($result === false ? 'false' : 'true'));
142 -
143 - return $result;
144 -}
145 -
146 - private function mxchat_increment_chat_count() {
147 - $chat_count = get_option('mxchat_chat_count', 0);
148 - $chat_count++;
149 - update_option('mxchat_chat_count', $chat_count);
150 - }
151 -
152 -function mxchat_fetch_conversation_history() {
153 - if (empty($_POST['session_id'])) {
154 - wp_send_json_error(['message' => esc_html__('Session ID missing.', 'mxchat')]);
155 - wp_die();
156 - }
157 -
158 - $session_id = sanitize_text_field($_POST['session_id']);
159 -
160 - // SECURITY FIX: Verify session ownership before retrieving data
161 - // If IP/user changed, signal frontend to reset session instead of blocking
162 - $current_user_identifier = MxChat_User::mxchat_get_user_identifier();
163 -
164 - // Check if this session has an owner recorded
165 - $session_owner = get_option("mxchat_session_owner_{$session_id}");
166 -
167 - // Update session owner if it changed (e.g. IP changed due to network switch)
168 - // The session ID itself is the authentication — if the client has it, they own it
169 - if (!$session_owner || $session_owner !== $current_user_identifier) {
170 - update_option("mxchat_session_owner_{$session_id}", $current_user_identifier, 'no');
171 - }
172 -
173 - $history = get_option("mxchat_history_{$session_id}", []); // Retrieve stored history
174 - $chat_mode = get_option("mxchat_mode_{$session_id}", 'ai'); // Get current chat mode
175 -
176 - if (empty($history)) {
177 - // Even if history is empty, return the chat mode
178 - wp_send_json_success([
179 - 'conversation' => [],
180 - 'chat_mode' => $chat_mode
181 - ]);
182 - wp_die();
183 - }
184 -
185 - wp_send_json_success([
186 - 'conversation' => $history,
187 - 'chat_mode' => $chat_mode
188 - ]);
189 - wp_die();
190 -}
191 -private function mxchat_fetch_conversation_history_for_ai($session_id, $session_start_timestamp = 0) {
192 - $history = get_option("mxchat_history_{$session_id}", []);
193 -
194 - // Check persistence setting - when OFF, only include messages from current page load
195 - $options = get_option('mxchat_options', []);
196 - $persistence_enabled = isset($options['chat_persistence_toggle']) && $options['chat_persistence_toggle'] === 'on';
197 -
198 - // Filter history when persistence is OFF to match what the user sees
199 - if (!$persistence_enabled && $session_start_timestamp > 0) {
200 - $history = array_filter($history, function($entry) use ($session_start_timestamp) {
201 - // Include messages from this page load onwards
202 - return isset($entry['timestamp']) && $entry['timestamp'] >= $session_start_timestamp;
203 - });
204 - // Re-index array after filtering
205 - $history = array_values($history);
206 - }
207 -
208 - $formatted_history = [];
209 -
210 - // Adjusted for code-heavy conversations
211 - $max_tokens = 120000; // Context window size
212 - $reserved_tokens = 5000; // Space for system prompts + current query
213 - $current_token_count = 0;
214 -
215 - // Allowed HTML tags for content sanitization
216 - $allowed_tags = [
217 - 'pre' => ['class' => true],
218 - 'code' => ['class' => true],
219 - 'span' => ['class' => true],
220 - 'div' => ['class' => true],
221 - 'strong' => [],
222 - 'em' => []
223 - ];
224 -
225 - foreach (array_reverse($history) as $entry) {
226 - // Preserve code blocks while sanitizing other HTML
227 - $clean_content = wp_kses($entry['content'], $allowed_tags);
228 -
229 - // Detect code blocks in content
230 - $has_code = false;
231 -// Replace the HTML check with:
232 -// Allow messages that contain code blocks or are plain text
233 -if (strpos($clean_content, '<pre') === false &&
234 - strpos($clean_content, '<code') === false &&
235 - $clean_content !== strip_tags($entry['content'])) {
236 - continue;
237 -}
238 -
239 - // Skip entries that lost significant content during sanitization
240 - if (!$has_code && $clean_content !== strip_tags($entry['content'])) {
241 - continue;
242 - }
243 -
244 - // More accurate token estimation (1 token ≈ 4 characters)
245 - $token_estimate = ceil(mb_strlen($clean_content, 'UTF-8') / 4);
246 -
247 - // Check token budget with the new estimate
248 - if (($current_token_count + $token_estimate + $reserved_tokens) > $max_tokens) {
249 - // Try to fit partial content if it's the first entry
250 - if (empty($formatted_history)) {
251 - $clean_content = mb_substr($clean_content, 0, ($max_tokens - $reserved_tokens) * 4);
252 - $token_estimate = ceil(mb_strlen($clean_content, 'UTF-8') / 4);
253 - } else {
254 - break;
255 - }
256 - }
257 -
258 - // Add to formatted history
259 - $formatted_history[] = [
260 - 'role' => $entry['role'],
261 - 'content' => $clean_content
262 - ];
263 -
264 - $current_token_count += $token_estimate;
265 - }
266 -
267 - // Reverse back to maintain chronological order
268 - $formatted_history = array_reverse($formatted_history);
269 -
270 - // Add system message about code context
271 - array_unshift($formatted_history, [
272 - 'role' => 'system',
273 - 'content' => 'Preserved code blocks are marked with [CODE BLOCK PRESERVED]. '
274 - . 'Maintain formatting and syntax highlighting when referencing code.'
275 - ]);
276 -
277 - return $formatted_history;
278 -}
279 -
280 -public function register_routes() {
281 - //error_log(esc_html__('Registering MxChat REST routes', 'mxchat'));
282 -
283 - register_rest_route('mxchat/v1', '/stream', [
284 - 'methods' => 'GET',
285 - 'callback' => [$this, 'mxchat_stream_events'],
286 - 'permission_callback' => [$this, 'verify_chat_session'],
287 - ]);
288 -
289 - register_rest_route('mxchat/v1', '/agent-response', [
290 - 'methods' => 'POST',
291 - 'callback' => [$this, 'mxchat_handle_agent_response'],
292 - 'permission_callback' => [$this, 'verify_slack_request'],
293 - ]);
294 -
295 - register_rest_route('mxchat/v1', '/slack-interaction', [
296 - 'methods' => 'POST',
297 - 'callback' => [$this, 'handle_slack_interaction'],
298 - 'permission_callback' => [$this, 'verify_slack_request'],
299 - ]);
300 -
301 - register_rest_route('mxchat/v1', '/slack-messages', [
302 - 'methods' => 'POST',
303 - 'callback' => [$this, 'handle_slack_messages'],
304 - 'permission_callback' => [$this, 'verify_slack_request'],
305 - ]);
306 -
307 - // Telegram webhook endpoint
308 - register_rest_route('mxchat/v1', '/telegram-webhook', [
309 - 'methods' => 'POST',
310 - 'callback' => [$this, 'handle_telegram_webhook'],
311 - 'permission_callback' => [$this, 'verify_telegram_request'],
312 - ]);
313 -
314 - //error_log(esc_html__('MxChat REST routes registered', 'mxchat'));
315 -}
316 -
317 -/**
318 - * Verify valid chat session
319 - */
320 -public function verify_chat_session($request) {
321 - $session_id = $request->get_param('session_id');
322 - if (empty($session_id)) {
323 - //error_log(esc_html__('Empty session ID in chat request', 'mxchat'));
324 - return false;
325 - }
326 -
327 - $chat_mode = get_option("mxchat_mode_{$session_id}", 'ai');
328 - return $chat_mode === 'agent';
329 -}
330 -
331 -/**
332 - * Verify request is coming from Slack.
333 - *
334 - * @param WP_REST_Request $request
335 - * @return bool True if valid, false otherwise.
336 - */
337 -public function verify_slack_request($request) {
338 - // Get the Slack signing secret from your plugin options
339 - $valid_key = $this->options['live_agent_secret_key'] ?? '';
340 -
341 - if (empty($valid_key)) {
342 - //error_log(esc_html__('Slack signing secret not configured', 'mxchat'));
343 - return false;
344 - }
345 -
346 - $timestamp = $request->get_header('X-Slack-Request-Timestamp');
347 - $slack_signature = $request->get_header('X-Slack-Signature');
348 -
349 - // Verify timestamp to prevent replay attacks
350 - if (abs(time() - intval($timestamp)) > 300) {
351 - //error_log(esc_html__('Slack request timestamp too old', 'mxchat'));
352 - return false;
353 - }
354 -
355 - // Get raw request body from the WP_REST_Request object
356 - // (php://input may already be consumed by WordPress at this point)
357 - $request_body = $request->get_body();
358 -
359 - // Create the signature base string
360 - $sig_basestring = "v0:{$timestamp}:{$request_body}";
361 -
362 - // Calculate expected signature
363 - $my_signature = 'v0=' . hash_hmac('sha256', $sig_basestring, $valid_key);
364 -
365 - // Compare signatures
366 - return hash_equals($my_signature, $slack_signature);
367 -}
368 -
369 -/**
370 - * Verify request is coming from Telegram.
371 - *
372 - * @param WP_REST_Request $request
373 - * @return bool True if valid, false otherwise.
374 - */
375 -public function verify_telegram_request($request) {
376 - $secret_token = $this->options['telegram_webhook_secret'] ?? '';
377 -
378 - //error_log('[MxChat Telegram DEBUG] verify_telegram_request called');
379 - //error_log('[MxChat Telegram DEBUG] Stored secret: ' . (empty($secret_token) ? 'EMPTY' : substr($secret_token, 0, 10) . '...'));
380 -
381 - if (empty($secret_token)) {
382 - // If no secret is configured, allow the request (for initial setup)
383 - //error_log('[MxChat Telegram DEBUG] No secret configured, allowing request');
384 - return true;
385 - }
386 -
387 - // Telegram sends the secret token in the X-Telegram-Bot-Api-Secret-Token header
388 - $request_token = $request->get_header('X-Telegram-Bot-Api-Secret-Token');
389 -
390 - //error_log('[MxChat Telegram DEBUG] Request token: ' . (empty($request_token) ? 'EMPTY' : substr($request_token, 0, 10) . '...'));
391 -
392 - if (empty($request_token)) {
393 - //error_log('[MxChat Telegram DEBUG] Request rejected: No token in header');
394 - return false;
395 - }
396 -
397 - // Timing-safe comparison
398 - $result = hash_equals($secret_token, $request_token);
399 - //error_log('[MxChat Telegram DEBUG] Token comparison result: ' . ($result ? 'MATCH' : 'MISMATCH'));
400 - return $result;
401 -}
402 -
403 -public function mxchat_stream_events(WP_REST_Request $request) {
404 - header('Content-Type: text/event-stream');
405 - header('Cache-Control: no-cache');
406 - header('Connection: keep-alive');
407 -
408 - $session_id = sanitize_text_field($request->get_param('session_id'));
409 - $last_seen_id = sanitize_text_field($request->get_param('last_seen_id')) ?: '';
410 -
411 - if (empty($session_id)) {
412 - echo esc_html__("event: error\ndata: ", 'mxchat') . esc_html__('Missing session_id', 'mxchat') . "\n\n";
413 - flush();
414 - exit;
415 - }
416 -
417 - $history = get_option("mxchat_history_{$session_id}", []);
418 -
419 - // Filter only new messages
420 - $new_messages = array_filter($history, function ($message) use ($last_seen_id) {
421 - return !empty($message['id']) && $message['id'] > $last_seen_id;
422 - });
423 -
424 - // Send new messages if available
425 - if (!empty($new_messages)) {
426 - echo esc_html__("event: newMessages\ndata: ", 'mxchat') . json_encode(array_values($new_messages)) . "\n\n";
427 - } else {
428 - // Keep the connection alive
429 - echo esc_html__("event: keepAlive\ndata: ", 'mxchat') . "{}\n\n";
430 - }
431 - flush();
432 - exit;
433 -}
434 -
435 -
436 -
437 -
438 -private function mxchat_save_chat_message($session_id, $role, $message, $originating_page = null, $rag_context = null) {
439 - global $wpdb;
440 - $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
441 - //error_log("[DEBUG] mxchat_save_chat_message -> START for session_id: {$session_id}, role: {$role}");
442 -
443 - // Check if this is the first message in a new session (before any other database operations)
444 - $is_new_session = false;
445 - if ($role === 'user') { // Only check for user messages, not bot responses
446 - $existing_messages = $wpdb->get_var($wpdb->prepare(
447 - "SELECT COUNT(*) FROM $table_name WHERE session_id = %s",
448 - $session_id
449 - ));
450 - $is_new_session = ($existing_messages == 0);
451 -
452 - // Log for debugging
453 - if ($is_new_session) {
454 - //error_log("[DEBUG] This is a NEW session - first message");
455 - }
456 - }
457 -
458 - // SECURITY FIX: Set session ownership for new sessions
459 - if ($is_new_session && $role === 'user') {
460 - $current_user_identifier = MxChat_User::mxchat_get_user_identifier();
461 - $session_owner_key = "mxchat_session_owner_{$session_id}";
462 -
463 - // Only set ownership if not already set
464 - if (!get_option($session_owner_key)) {
465 - update_option($session_owner_key, $current_user_identifier, 'no');
466 - //error_log("[DEBUG] Set session ownership for {$session_id} to {$current_user_identifier}");
467 - }
468 - }
469 -
470 - // 1) Extract agent name if present
471 - $agent_name = '';
472 - if (preg_match('/^Agent: (.*?) - /', $message, $matches)) {
473 - $agent_name = $matches[1];
474 - $message = str_replace("Agent: $agent_name - ", '', $message);
475 - $session_meta_key = "mxchat_agent_name_{$session_id}";
476 - if (empty(get_option($session_meta_key))) {
477 - update_option($session_meta_key, $agent_name);
478 - //error_log("[DEBUG] mxchat_save_chat_message -> Stored agent_name in option: {$session_meta_key} => {$agent_name}");
479 - }
480 - }
481 -
482 - // 2) Generate unique message_id
483 - $message_id = uniqid();
484 - //error_log("[DEBUG] mxchat_save_chat_message -> Generated message_id: {$message_id}");
485 -
486 - // 3) Determine user_id
487 - $user_id = is_user_logged_in() ? get_current_user_id() : 0;
488 -
489 - // 4) Determine user_identifier
490 - $user_identifier = $agent_name
491 - ? $agent_name
492 - : MxChat_User::mxchat_get_user_identifier();
493 -
494 - // 5) Determine displayed_name
495 - $user_email = MxChat_User::mxchat_get_user_email();
496 - $displayed_name = $agent_name ? $agent_name : ($user_email ?: $user_identifier);
497 -
498 - // 6) Check for a saved email in wp_options
499 - $email_option_key = "mxchat_email_{$session_id}";
500 - $saved_email = get_option($email_option_key);
501 - //error_log("[DEBUG] mxchat_save_chat_message -> Checking wp_options for email_option_key: {$email_option_key}, found: {$saved_email}");
502 -
503 - // Check for a saved name in wp_options
504 - $name_option_key = "mxchat_name_{$session_id}";
505 - $saved_name = get_option($name_option_key);
506 - //error_log("[DEBUG] mxchat_save_chat_message -> Checking wp_options for name_option_key: {$name_option_key}, found: {$saved_name}");
507 -
508 - // If found, update DB user_email and user_name
509 - if ($saved_email || $saved_name) {
510 - $update_data = [];
511 - if ($saved_email) {
512 - $update_data['user_email'] = $saved_email;
513 - }
514 - if ($saved_name) {
515 - $update_data['user_name'] = $saved_name;
516 - }
517 -
518 - if (!empty($update_data)) {
519 - $update_res = $wpdb->update(
520 - $table_name,
521 - $update_data,
522 - ['session_id' => $session_id],
523 - array_fill(0, count($update_data), '%s'),
524 - ['%s']
525 - );
526 - //error_log("[DEBUG] mxchat_save_chat_message -> Attempted DB user_email/user_name update for session_id {$session_id}. update_res: {$update_res}");
527 - }
528 - }
529 -
530 - // 7) Save to session history in wp_options
531 - $history_key = "mxchat_history_{$session_id}";
532 - $history = get_option($history_key, []);
533 - $history[] = [
534 - 'id' => $message_id,
535 - 'role' => $role,
536 - 'content' => $message,
537 - 'timestamp' => round(microtime(true) * 1000),
538 - 'agent_name' => $displayed_name,
539 - ];
540 - update_option($history_key, $history, 'no');
541 - //error_log("[DEBUG] mxchat_save_chat_message -> Updated session history in option: {$history_key}");
542 -
543 - // 8) Save the message to DB (INSERT)
544 - $insert_data = [
545 - 'user_id' => $user_id,
546 - 'user_identifier'=> $user_identifier,
547 - 'user_email' => $saved_email ?: $user_email,
548 - 'user_name' => $saved_name ?: '', // Add name to insert data
549 - 'session_id' => $session_id,
550 - 'role' => $role,
551 - 'message' => $message,
552 - 'timestamp' => current_time('mysql', 1),
553 - ];
554 -
555 - // IMPROVED: Handle originating page data
556 - $columns_exist = $wpdb->get_var("SHOW COLUMNS FROM $table_name LIKE 'originating_page_url'");
557 -
558 - if ($columns_exist) {
559 - if ($is_new_session && $role === 'user') {
560 - // For the first user message, set originating page data
561 -
562 - // First check if we have it from the parameter
563 - if ($originating_page && !empty($originating_page['url'])) {
564 - $insert_data['originating_page_url'] = $originating_page['url'];
565 - $insert_data['originating_page_title'] = $originating_page['title'] ?? '';
566 -
567 - //error_log("[DEBUG] Setting originating page from parameter: " . $originating_page['url']);
568 - }
569 - // Otherwise check if it's stored in the instance property
570 - else if (isset($this->pending_originating_page) && !empty($this->pending_originating_page['url'])) {
571 - $insert_data['originating_page_url'] = $this->pending_originating_page['url'];
572 - $insert_data['originating_page_title'] = $this->pending_originating_page['title'] ?? '';
573 -
574 - //error_log("[DEBUG] Setting originating page from pending_originating_page: " . $this->pending_originating_page['url']);
575 -
576 - // Clear after using
577 - unset($this->pending_originating_page);
578 - }
579 - // Fallback to HTTP_REFERER if nothing else is available
580 - else if (isset($_SERVER['HTTP_REFERER'])) {
581 - $referer_url = esc_url_raw($_SERVER['HTTP_REFERER']);
582 - $insert_data['originating_page_url'] = $referer_url;
583 -
584 - // Generate title from URL
585 - $parsed_url = parse_url($referer_url);
586 - $path = isset($parsed_url['path']) ? trim($parsed_url['path'], '/') : '';
587 -
588 - if (empty($path) || $path === 'index.php' || $path === 'index.html') {
589 - $insert_data['originating_page_title'] = 'Homepage';
590 - } else {
591 - $title = str_replace(['-', '_', '/', '.php', '.html'], ' ', $path);
592 - $insert_data['originating_page_title'] = ucwords(trim($title));
593 - }
594 -
595 - //error_log("[DEBUG] Setting originating page from HTTP_REFERER: " . $referer_url);
596 - }
597 -
598 - // Store for this session so all messages have the same originating page
599 - if (!empty($insert_data['originating_page_url'])) {
600 - update_option("mxchat_originating_page_{$session_id}", [
601 - 'url' => $insert_data['originating_page_url'],
602 - 'title' => $insert_data['originating_page_title']
603 - ], 'no');
604 - }
605 - } else {
606 - // For subsequent messages in the session, use the stored originating page
607 - $stored_originating = get_option("mxchat_originating_page_{$session_id}");
608 - if ($stored_originating && !empty($stored_originating['url'])) {
609 - $insert_data['originating_page_url'] = $stored_originating['url'];
610 - $insert_data['originating_page_title'] = $stored_originating['title'] ?? '';
611 - }
612 - }
613 - }
614 -
615 - // Add RAG context if provided (for bot messages)
616 - if ($rag_context !== null && $role === 'bot') {
617 - $rag_context_column_exists = $wpdb->get_var("SHOW COLUMNS FROM $table_name LIKE 'rag_context'");
618 - if ($rag_context_column_exists) {
619 - $insert_data['rag_context'] = is_array($rag_context) ? wp_json_encode($rag_context) : $rag_context;
620 - }
621 - }
622 -
623 - $wpdb->insert($table_name, $insert_data);
624 - //error_log("[DEBUG] mxchat_save_chat_message -> Inserted message into DB. row_id: {$wpdb->insert_id}, data: " . print_r($insert_data, true));
625 -
626 - // 9) Send notification email if this is the first user message in a new session
627 - if ($wpdb->insert_id && $is_new_session && $role === 'user') {
628 - $this->send_new_chat_notification($session_id, array(
629 - 'identifier' => $user_identifier,
630 - 'email' => $saved_email ?: $user_email,
631 - 'ip' => $_SERVER['REMOTE_ADDR']
632 - ));
633 - }
634 -
635 - // 10) Schedule delayed transcript email if enabled and message is from user
636 - if ($wpdb->insert_id && $role === 'user') {
637 - $this->schedule_delayed_transcript_email($session_id);
638 - }
639 -
640 - //error_log("[DEBUG] mxchat_save_chat_message -> END for session_id: {$session_id}");
641 - return $message_id;
642 -}
643 -
644 -private function send_new_chat_notification($session_id, $user_info = array()) {
645 - $options = get_option('mxchat_transcripts_options');
646 -
647 - // Check if notifications are enabled
648 - if (empty($options['mxchat_enable_notifications'])) {
649 - return false;
650 - }
651 -
652 - // Get notification email
653 - $to = !empty($options['mxchat_notification_email']) ?
654 - $options['mxchat_notification_email'] :
655 - get_option('admin_email');
656 -
657 - if (!is_email($to)) {
658 - return false;
659 - }
660 -
661 - // Prepare email content
662 - $subject = sprintf('[%s] New Chat Session Started', get_bloginfo('name'));
663 -
664 - $user_identifier = isset($user_info['identifier']) ? $user_info['identifier'] : 'Guest';
665 - $user_email = isset($user_info['email']) ? $user_info['email'] : 'Not provided';
666 - $user_ip = isset($user_info['ip']) ? $user_info['ip'] : $_SERVER['REMOTE_ADDR'];
667 -
668 - $message = sprintf(
669 - "A new chat session has started on your website.\n\n" .
670 - "Session ID: %s\n" .
671 - "User: %s\n" .
672 - "Email: %s\n" .
673 - "IP Address: %s\n" .
674 - "Time: %s\n\n" .
675 - "View transcripts: %s",
676 - $session_id,
677 - $user_identifier,
678 - $user_email,
679 - $user_ip,
680 - current_time('mysql'),
681 - admin_url('admin.php?page=mxchat-transcripts')
682 - );
683 -
684 - // Send email
685 - return wp_mail($to, $subject, $message);
686 -}
687 -
688 -/**
689 - * Schedule delayed transcript email for a session
690 - * Reschedules if a new user message is received
691 - */
692 -private function schedule_delayed_transcript_email($session_id) {
693 - $options = get_option('mxchat_transcripts_options');
694 -
695 - // Check if auto-email is enabled
696 - if (empty($options['mxchat_auto_email_transcript_enabled'])) {
697 - return;
698 - }
699 -
700 - // Get notification email
701 - $email = !empty($options['mxchat_notification_email']) ?
702 - $options['mxchat_notification_email'] :
703 - get_option('admin_email');
704 -
705 - if (!is_email($email)) {
706 - return;
707 - }
708 -
709 - // Get delay in minutes (default 30)
710 - $delay_minutes = isset($options['mxchat_auto_email_transcript_delay']) ?
711 - intval($options['mxchat_auto_email_transcript_delay']) : 30;
712 -
713 - // Clear any existing scheduled event for this session
714 - $hook = 'mxchat_send_delayed_transcript';
715 - $args = array($session_id);
716 - $timestamp = wp_next_scheduled($hook, $args);
717 -
718 - if ($timestamp) {
719 - wp_unschedule_event($timestamp, $hook, $args);
720 - }
721 -
722 - // Schedule new event
723 - $schedule_time = time() + ($delay_minutes * 60);
724 - wp_schedule_single_event($schedule_time, $hook, $args);
725 -}
726 -
727 -/**
728 - * Check if chat messages contain contact information (email or phone number)
729 - *
730 - * @param array $messages Array of message objects with 'message' property
731 - * @param object|null $session_data Session data object with user_email property
732 - * @return bool True if contact info found, false otherwise
733 - */
734 -private function chat_contains_contact_info($messages, $session_data = null) {
735 - // Check if session already has a stored email
736 - if ($session_data && !empty($session_data->user_email)) {
737 - return true;
738 - }
739 -
740 - // Email regex pattern
741 - $email_pattern = '/\b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Z|a-z]{2,}\b/';
742 -
743 - // Phone number patterns (covers various formats including international, WhatsApp style)
744 - // Matches: +1234567890, (123) 456-7890, 123-456-7890, 123.456.7890, 1234567890, +1 234 567 8900, etc.
745 - $phone_pattern = '/(?:\+?\d{1,3}[-.\s]?)?\(?\d{2,4}\)?[-.\s]?\d{2,4}[-.\s]?\d{2,4}(?:[-.\s]?\d{1,4})?/';
746 -
747 - // Only check user messages (not assistant responses)
748 - foreach ($messages as $msg) {
749 - if ($msg->role !== 'user') {
750 - continue;
751 - }
752 -
753 - $message_text = $msg->message;
754 -
755 - // Check for email
756 - if (preg_match($email_pattern, $message_text)) {
757 - return true;
758 - }
759 -
760 - // Check for phone number (must be at least 7 digits total to avoid false positives)
761 - if (preg_match($phone_pattern, $message_text, $matches)) {
762 - // Count actual digits to avoid matching short numbers
763 - $digits_only = preg_replace('/\D/', '', $matches[0]);
764 - if (strlen($digits_only) >= 7) {
765 - return true;
766 - }
767 - }
768 - }
769 -
770 - return false;
771 -}
772 -
773 -/**
774 - * Send the delayed transcript email with .txt attachment
775 - */
776 -public function mxchat_send_delayed_transcript($session_id) {
777 - global $wpdb;
778 -
779 - $options = get_option('mxchat_transcripts_options');
780 -
781 - // Get notification email
782 - $to = !empty($options['mxchat_notification_email']) ?
783 - $options['mxchat_notification_email'] :
784 - get_option('admin_email');
785 -
786 - if (!is_email($to)) {
787 - return false;
788 - }
789 -
790 - // Get all messages for this session
791 - $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
792 - $messages = $wpdb->get_results($wpdb->prepare(
793 - "SELECT role, message, timestamp FROM {$table_name}
794 - WHERE session_id = %s
795 - ORDER BY timestamp ASC",
796 - $session_id
797 - ));
798 -
799 - if (empty($messages)) {
800 - return false;
801 - }
802 -
803 - // Get session metadata
804 - $sessions_table = $wpdb->prefix . 'mxchat_sessions';
805 - $session_data = $wpdb->get_row($wpdb->prepare(
806 - "SELECT * FROM {$sessions_table} WHERE session_id = %s",
807 - $session_id
808 - ));
809 -
810 - // Check if contact info is required and if it's present
811 - $require_contact = !empty($options['mxchat_auto_email_transcript_require_contact']);
812 - if ($require_contact && !$this->chat_contains_contact_info($messages, $session_data)) {
813 - // Contact info required but not found - skip sending
814 - return false;
815 - }
816 -
817 - // Build transcript content
818 - $transcript_content = "Chat Transcript\n";
819 - $transcript_content .= "================\n\n";
820 - $transcript_content .= "Session ID: " . $session_id . "\n";
821 -
822 - if ($session_data) {
823 - $transcript_content .= "User: " . ($session_data->user_identifier ?: 'Guest') . "\n";
824 - $transcript_content .= "Email: " . ($session_data->user_email ?: 'Not provided') . "\n";
825 - $transcript_content .= "Started: " . $session_data->created_at . "\n";
826 - }
827 -
828 - $transcript_content .= "\n" . str_repeat("=", 50) . "\n\n";
829 -
830 - // Add messages
831 - foreach ($messages as $msg) {
832 - $role_label = ($msg->role === 'user') ? 'User' : 'Assistant';
833 - $transcript_content .= "[{$msg->timestamp}] {$role_label}:\n";
834 - $transcript_content .= $msg->message . "\n\n";
835 - }
836 -
837 - // Create temporary file for attachment using WP_Filesystem
838 - $upload_dir = wp_upload_dir();
839 - $temp_file = $upload_dir['basedir'] . '/mxchat-transcript-' . $session_id . '.txt';
840 - global $wp_filesystem;
841 - if (empty($wp_filesystem)) {
842 - require_once ABSPATH . 'wp-admin/includes/file.php';
843 - WP_Filesystem();
844 - }
845 - $wp_filesystem->put_contents($temp_file, $transcript_content, FS_CHMOD_FILE);
846 -
847 - // Prepare email
848 - $subject = sprintf('[%s] Chat Transcript - Session %s', get_bloginfo('name'), substr($session_id, 0, 8));
849 -
850 - $message = "Please find attached the full chat transcript.\n\n";
851 - $message .= "Session ID: {$session_id}\n";
852 -
853 - if ($session_data) {
854 - $message .= "User: " . ($session_data->user_identifier ?: 'Guest') . "\n";
855 - $message .= "Email: " . ($session_data->user_email ?: 'Not provided') . "\n";
856 - }
857 -
858 - $message .= "\nView online: " . admin_url('admin.php?page=mxchat-transcripts');
859 -
860 - // Send email with attachment
861 - $attachments = array($temp_file);
862 - $result = wp_mail($to, $subject, $message, '', $attachments);
863 -
864 - // Clean up temporary file
865 - if (file_exists($temp_file)) {
866 - unlink($temp_file);
867 - }
868 -
869 - return $result;
870 -}
871 -
872 -
873 -
874 -public function mxchat_handle_save_email_and_response() {
875 - //error_log('[DEBUG] ---------- mxchat_handle_save_email_and_response START ----------');
876 - //error_log('DEBUG: POST data: ' . print_r($_POST, true));
877 -
878 - nocache_headers();
879 -
880 - // Validate nonce
881 - if (!isset($_POST['nonce']) || !wp_verify_nonce($_POST['nonce'], 'mxchat_chat_nonce')) {
882 - //error_log(esc_html__('[ERROR] Invalid nonce in mxchat_handle_save_email_and_response', 'mxchat'));
883 - wp_send_json_error(['message' => esc_html__('Invalid nonce.', 'mxchat')]);
884 - wp_die();
885 - }
886 -
887 - $session_id = isset($_POST['session_id']) ? sanitize_text_field($_POST['session_id']) : '';
888 - $email = isset($_POST['email']) ? sanitize_email($_POST['email']) : '';
889 - $name = isset($_POST['name']) ? sanitize_text_field($_POST['name']) : '';
890 -
891 - //error_log("[DEBUG] handle_save_email_and_response -> session_id: {$session_id}, email: {$email}, name: {$name}");
892 -
893 - if (empty($session_id) || $session_id === 'null' || empty($email)) {
894 - //error_log("[ERROR] Missing session_id or email: session_id={$session_id}, email={$email}");
895 - wp_send_json_error(['message' => esc_html__('Session ID or email is missing.', 'mxchat')]);
896 - wp_die();
897 - }
898 -
899 - // Validate name if provided (check if name field is enabled and name is required)
900 - $options = get_option('mxchat_options', []);
901 - $name_field_enabled = isset($options['enable_name_field']) &&
902 - ($options['enable_name_field'] === '1' || $options['enable_name_field'] === 'on');
903 -
904 - if ($name_field_enabled && (empty($name) || strlen(trim($name)) < 2 || strlen(trim($name)) > 100)) {
905 - //error_log("[ERROR] Invalid name: {$name} (enabled: {$name_field_enabled})");
906 - wp_send_json_error(['message' => esc_html__('Name must be between 2 and 100 characters.', 'mxchat')]);
907 - wp_die();
908 - }
909 -
910 - // 1) Always store email in wp_options
911 - $email_option_key = "mxchat_email_{$session_id}";
912 - update_option($email_option_key, $email, 'no');
913 - //error_log("[DEBUG] handle_save_email_and_response -> updated option: {$email_option_key} => {$email}");
914 -
915 - // Store name in wp_options if provided
916 - if (!empty($name)) {
917 - $name_option_key = "mxchat_name_{$session_id}";
918 - update_option($name_option_key, $name, 'no');
919 - //error_log("[DEBUG] handle_save_email_and_response -> updated option: {$name_option_key} => {$name}");
920 - }
921 -
922 - // 2) (Optional) Also store in DB if a row already exists
923 - global $wpdb;
924 - $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
925 -
926 - // Make sure we have a valid placeholder in prepare
927 - $sql = $wpdb->prepare("SELECT COUNT(*) FROM {$table_name} WHERE session_id = %s", $session_id);
928 - $session_count = $wpdb->get_var($sql);
929 -
930 - //error_log("[DEBUG] handle_save_email_and_response -> session_count for {$session_id}: {$session_count} (SQL: {$sql})");
931 -
932 - if ($session_count) {
933 - // Update both user_email and user_name if row(s) exist
934 - if (!empty($name)) {
935 - $update_sql = $wpdb->prepare(
936 - "UPDATE {$table_name} SET user_email = %s, user_name = %s WHERE session_id = %s",
937 - $email,
938 - $name,
939 - $session_id
940 - );
941 - } else {
942 - $update_sql = $wpdb->prepare(
943 - "UPDATE {$table_name} SET user_email = %s WHERE session_id = %s",
944 - $email,
945 - $session_id
946 - );
947 - }
948 - $wpdb->query($update_sql);
949 - //error_log("[DEBUG] handle_save_email_and_response -> DB updated: {$update_sql}");
950 - } else {
951 - //error_log("[INFO] handle_save_email_and_response -> No DB entry for {$session_id}, so email/name is only in wp_options.");
952 - }
953 -
954 - // Provide success response (same as original)
955 - $bot_message = __('Thanks for providing your email! You can continue chatting now.', 'mxchat');
956 - //error_log("[DEBUG] handle_save_email_and_response -> success, returning bot_message: {$bot_message}");
957 - wp_send_json_success(['message' => $bot_message]);
958 - wp_die();
959 -}
960 -
961 -public function mxchat_check_email_provided() {
962 - //error_log('[DEBUG] ---------- mxchat_check_email_provided START ----------');
963 -
964 - nocache_headers();
965 -
966 - if (!isset($_POST['nonce']) || !wp_verify_nonce($_POST['nonce'], 'mxchat_chat_nonce')) {
967 - //error_log('[ERROR] Invalid nonce in mxchat_check_email_provided');
968 - wp_send_json_error(['message' => esc_html__('Invalid nonce', 'mxchat')]);
969 - }
970 -
971 - $session_id = isset($_POST['session_id']) ? sanitize_text_field($_POST['session_id']) : '';
972 - if (empty($session_id) || $session_id === 'null') {
973 - //error_log('[ERROR] No session ID provided in mxchat_check_email_provided');
974 - wp_send_json_error(['message' => esc_html__('No session ID provided', 'mxchat')]);
975 - }
976 -
977 - // Check if the user is logged in
978 - if (is_user_logged_in()) {
979 - $current_user = wp_get_current_user();
980 - //error_log("[DEBUG] User is logged in as {$current_user->user_email}");
981 -
982 - // Get user's display name for logged in users
983 - $user_name = !empty($current_user->display_name) ? $current_user->display_name :
984 - (!empty($current_user->first_name) ? $current_user->first_name : '');
985 -
986 - $response_data = ['logged_in' => true, 'email' => $current_user->user_email];
987 - if (!empty($user_name)) {
988 - $response_data['name'] = $user_name;
989 - }
990 -
991 - wp_send_json_success($response_data);
992 - }
993 -
994 - // Check if name field is required
995 - $options = get_option('mxchat_options', []);
996 - $name_field_enabled = isset($options['enable_name_field']) &&
997 - ($options['enable_name_field'] === '1' || $options['enable_name_field'] === 'on');
998 -
999 - $email_option_key = "mxchat_email_{$session_id}";
1000 - $stored_email = get_option($email_option_key, '');
1001 -
1002 - // Check for stored name
1003 - $name_option_key = "mxchat_name_{$session_id}";
1004 - $stored_name = get_option($name_option_key, '');
1005 -
1006 - //error_log("[DEBUG] mxchat_check_email_provided -> Checking email option: {$email_option_key}, found: {$stored_email}");
1007 - //error_log("[DEBUG] mxchat_check_email_provided -> Checking name option: {$name_option_key}, found: {$stored_name}, required: " . ($name_field_enabled ? 'yes' : 'no'));
1008 -
1009 - // Check if we have email and name (if name is required)
1010 - $has_required_info = !empty($stored_email);
1011 -
1012 - if ($name_field_enabled) {
1013 - $has_required_info = $has_required_info && !empty($stored_name);
1014 - }
1015 -
1016 - if ($has_required_info) {
1017 - //error_log("[DEBUG] mxchat_check_email_provided -> Required info found, returning success");
1018 -
1019 - $response_data = ['email' => $stored_email];
1020 - if (!empty($stored_name)) {
1021 - $response_data['name'] = $stored_name;
1022 - }
1023 -
1024 - wp_send_json_success($response_data);
1025 - } else {
1026 - //error_log("[DEBUG] mxchat_check_email_provided -> Required info missing, returning error");
1027 - wp_send_json_error(['message' => esc_html__('No email found', 'mxchat')]);
1028 - }
1029 -}
1030 -
1031 -/**
1032 - * Send error response in appropriate format based on streaming mode
1033 - * ADDED: Helper method to consistently handle errors in both streaming and non-streaming modes
1034 - *
1035 - * @param string $error_message The error message to display
1036 - * @param string $error_code Optional error code for debugging
1037 - */
1038 -private function send_error_response($error_message, $error_code = 'api_error') {
1039 - if ($this->is_streaming) {
1040 - echo "data: " . json_encode([
1041 - 'error' => true,
1042 - 'error_message' => $error_message,
1043 - 'error_code' => $error_code,
1044 - 'text' => $error_message,
1045 - 'message' => $error_message
1046 - ]) . "\n\n";
1047 - echo "data: [DONE]\n\n";
1048 - flush();
1049 - } else {
1050 - wp_send_json_error([
1051 - 'error_message' => $error_message,
1052 - 'error_code' => $error_code
1053 - ]);
1054 - }
1055 - wp_die();
1056 -}
1057 -
1058 -public function mxchat_handle_chat_request() {
1059 - global $wpdb;
1060 -
1061 - // Debug: Log incoming bot_id
1062 - $bot_id = isset($_POST['bot_id']) ? sanitize_key($_POST['bot_id']) : 'default';
1063 - //error_log("=== MXCHAT DEBUG: Starting chat request ===");
1064 - //error_log("MXCHAT DEBUG: Bot ID received: " . $bot_id);
1065 -
1066 - // Get bot-specific options
1067 - $bot_options = $this->get_bot_options($bot_id);
1068 - $current_options = !empty($bot_options) ? $bot_options : $this->options;
1069 -
1070 - // Check if this is a streaming request
1071 - // Allow force_streaming_test parameter to bypass the setting check (for admin compatibility testing)
1072 - $force_streaming_test = isset($_POST['force_streaming_test']) && $_POST['force_streaming_test'] === '1' && current_user_can('administrator');
1073 - $is_streaming = isset($_POST['action']) && $_POST['action'] === 'mxchat_stream_chat' &&
1074 - ($force_streaming_test || (isset($current_options['enable_streaming_toggle']) && $current_options['enable_streaming_toggle'] === 'on'));
1075 -
1076 - // ADDED: Store streaming state in class property for use in private methods
1077 - $this->is_streaming = $is_streaming;
1078 -
1079 - // NOTE: Streaming headers are now set later via setup_streaming_headers()
1080 - // This allows actions/forms to return JSON responses without header conflicts
1081 -
1082 - // Check if MX Chat Moderation is active
1083 - if (class_exists('MX_Chat_Moderation')) {
1084 - // Get user email and IP
1085 - $user_email = '';
1086 - $user_ip = $_SERVER['REMOTE_ADDR'];
1087 -
1088 - // If user is logged in, get their email
1089 - if (is_user_logged_in()) {
1090 - $current_user = wp_get_current_user();
1091 - $user_email = $current_user->user_email;
1092 - }
1093 -
1094 - // Create ban handler instance
1095 - $ban_handler = new MX_Chat_Ban_Handler();
1096 -
1097 - // Check if user is banned by IP
1098 - if ($ban_handler->check_ban($user_ip, 'ip')) {
1099 - wp_send_json([
1100 - 'success' => false,
1101 - 'message' => esc_html__('Access denied. Your IP address has been banned.', 'mxchat'),
1102 - 'status' => 'banned'
1103 - ]);
1104 - wp_die();
1105 - }
1106 -
1107 - // If user is logged in, also check email
1108 - if (!empty($user_email) && $ban_handler->check_ban($user_email, 'email')) {
1109 - wp_send_json([
1110 - 'success' => false,
1111 - 'message' => esc_html__('Access denied. Your email address has been banned.', 'mxchat'),
1112 - 'status' => 'banned'
1113 - ]);
1114 - wp_die();
1115 - }
1116 - }
1117 -
1118 - $this->fallbackResponse = ['text' => '', 'html' => '', 'images' => []];
1119 - $this->productCardHtml = '';
1120 -
1121 - // Get the actual WordPress user ID if logged in
1122 - $is_logged_in = is_user_logged_in();
1123 - if ($is_logged_in) {
1124 - $user_id = get_current_user_id(); // This will get the actual WordPress user ID
1125 - } else {
1126 - // For logged-out users, use your existing identifier method
1127 - $user_id = $this->mxchat_get_user_identifier();
1128 - }
1129 -
1130 - // Get and sanitize the user identifier
1131 - $user_id = sanitize_key($user_id);
1132 -
1133 - // Check rate limit using new settings structure
1134 - $rate_limit_result = $this->check_rate_limit();
1135 -
1136 - if ($rate_limit_result !== true) {
1137 - wp_send_json([
1138 - 'success' => false,
1139 - 'message' => $rate_limit_result['message'],
1140 - 'status' => 'rate_limit_exceeded'
1141 - ]);
1142 - wp_die();
1143 - }
1144 -
1145 - // Rest of your existing code...
1146 - $session_id = isset($_POST['session_id']) ? sanitize_text_field($_POST['session_id']) : '';
1147 -
1148 - if (empty($session_id)) {
1149 - wp_send_json_error(esc_html__('Session ID is missing.', 'mxchat'));
1150 - wp_die();
1151 - }
1152 -
1153 - // Update session owner if it changed (e.g. IP changed due to network switch)
1154 - // The session ID itself is the authentication — if the client has it, they own it
1155 - $current_user_identifier = MxChat_User::mxchat_get_user_identifier();
1156 - $session_owner = get_option("mxchat_session_owner_{$session_id}");
1157 -
1158 - if (!$session_owner || $session_owner !== $current_user_identifier) {
1159 - update_option("mxchat_session_owner_{$session_id}", $current_user_identifier, 'no');
1160 - }
1161 -
1162 - // Validate and sanitize the incoming message
1163 - if (empty($_POST['message'])) {
1164 - wp_send_json_error(esc_html__('No message received.', 'mxchat'));
1165 - wp_die();
1166 - }
1167 -
1168 -
1169 - // Track originating page for first message in session
1170 - $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
1171 -
1172 - // Check if originating page columns exist
1173 - $columns_exist = $wpdb->get_var("SHOW COLUMNS FROM $table_name LIKE 'originating_page_url'");
1174 -
1175 - if ($columns_exist) {
1176 - // Check if this session already has messages
1177 - $message_count = $wpdb->get_var($wpdb->prepare(
1178 - "SELECT COUNT(*) FROM $table_name WHERE session_id = %s",
1179 - $session_id
1180 - ));
1181 -
1182 - // If this is the first message in the session
1183 - if ($message_count == 0) {
1184 - // Get originating page from JavaScript (preferred) or HTTP_REFERER (fallback)
1185 - $originating_url = '';
1186 - $originating_title = '';
1187 -
1188 - // Try to get from POST data first (sent by JavaScript)
1189 - if (isset($_POST['current_page_url'])) {
1190 - $originating_url = esc_url_raw($_POST['current_page_url']);
1191 - $originating_title = isset($_POST['current_page_title'])
1192 - ? sanitize_text_field($_POST['current_page_title'])
1193 - : '';
1194 - }
1195 - // Fallback to HTTP_REFERER if not provided by JavaScript
1196 - else if (isset($_SERVER['HTTP_REFERER'])) {
1197 - $originating_url = esc_url_raw($_SERVER['HTTP_REFERER']);
1198 - }
1199 -
1200 - // Generate title if we have URL but no title
1201 - if ($originating_url && empty($originating_title)) {
1202 - $parsed_url = parse_url($originating_url);
1203 - $path = isset($parsed_url['path']) ? trim($parsed_url['path'], '/') : '';
1204 -
1205 - if (empty($path) || $path === 'index.php' || $path === 'index.html') {
1206 - $originating_title = 'Homepage';
1207 - } else {
1208 - // Clean up the path to make a readable title
1209 - $originating_title = str_replace(['-', '_', '/', '.php', '.html'], ' ', $path);
1210 - $originating_title = ucwords(trim($originating_title));
1211 - }
1212 - }
1213 -
1214 - // Store for later use when saving the message
1215 - $this->pending_originating_page = [
1216 - 'url' => $originating_url,
1217 - 'title' => $originating_title
1218 - ];
1219 - }
1220 - }
1221 -
1222 -
1223 -
1224 - // Get page context if provided
1225 - $page_context = null;
1226 - if (isset($_POST['page_context']) && !empty($_POST['page_context'])) {
1227 - $page_context_raw = stripslashes($_POST['page_context']);
1228 - $page_context = json_decode($page_context_raw, true);
1229 -
1230 - // Validate page context structure
1231 - if (is_array($page_context) &&
1232 - isset($page_context['url']) &&
1233 - isset($page_context['title']) &&
1234 - isset($page_context['content'])) {
1235 -
1236 - // Sanitize page context
1237 - $page_context['url'] = esc_url_raw($page_context['url']);
1238 - $page_context['title'] = sanitize_text_field($page_context['title']);
1239 - $page_context['content'] = wp_kses_post($page_context['content']);
1240 - } else {
1241 - $page_context = null;
1242 - }
1243 - }
1244 -
1245 - // Modify the message sanitization to preserve PHP tags in code blocks
1246 - $allowed_tags = [
1247 - 'pre' => [],
1248 - 'code' => ['class' => true],
1249 - 'span' => ['class' => true],
1250 - 'div' => ['class' => true],
1251 - ];
1252 -
1253 - // First preserve code blocks
1254 - $message = preg_replace_callback('/<pre><code.*?>.*?<\/code><\/pre>/s', function($matches) {
1255 - return htmlspecialchars_decode($matches[0]);
1256 - }, $_POST['message']);
1257 -
1258 - // Then apply sanitization
1259 - $message = wp_kses($message, $allowed_tags);
1260 -
1261 - // Preserve code blocks from markdown conversion
1262 - $message = preg_replace('/```(\w+)?\s*([\s\S]+?)```/s', '<pre><code class="$1">$2</code></pre>', $message);
1263 - $message = apply_filters('mxchat_filter_message', $message, 'prompt', $session_id);
1264 -
1265 - // ===== SIMPLIFIED TESTING PANEL INITIALIZATION =====
1266 - // Always initialize testing data for admins (no toggle needed)
1267 - $testing_data = null;
1268 - if (current_user_can('administrator')) {
1269 - // For vision messages, use the original user message for the query display
1270 - $query_for_testing = $message;
1271 - if (isset($_POST['vision_processed']) && $_POST['vision_processed'] && isset($_POST['original_user_message'])) {
1272 - $query_for_testing = sanitize_textarea_field($_POST['original_user_message']);
1273 - }
1274 -
1275 - $testing_data = [
1276 - 'query' => $query_for_testing,
1277 - 'timestamp' => time(),
1278 - 'top_matches' => [],
1279 - 'action_matches' => [], // Initialize action matches array
1280 - 'page_context' => $page_context, // Include page context in testing data
1281 - 'is_vision' => isset($_POST['vision_processed']) && $_POST['vision_processed'],
1282 - 'bot_id' => $bot_id // Include bot ID in testing data
1283 - ];
1284 -
1285 - // Get similarity threshold from bot options or default options
1286 - $similarity_threshold = isset($current_options['similarity_threshold'])
1287 - ? ((int) $current_options['similarity_threshold']) / 100
1288 - : 0.35;
1289 -
1290 - $testing_data['similarity_threshold'] = $similarity_threshold;
1291 -
1292 - // Determine knowledge base type using bot-specific config
1293 - $bot_pinecone_config = $this->get_bot_pinecone_config($bot_id);
1294 - $use_pinecone = isset($bot_pinecone_config['use_pinecone']) ? $bot_pinecone_config['use_pinecone'] : false;
1295 - $testing_data['knowledge_base_type'] = $use_pinecone ? 'Pinecone' : 'WordPress Database';
1296 - }
1297 - // ===== END SIMPLIFIED TESTING INITIALIZATION =====
1298 -
1299 - // Add debug before and after:
1300 - //error_log('MxChat Core: About to call mxchat_pre_process_message filter with message: ' . $message);
1301 - $pre_processed_result = apply_filters('mxchat_pre_process_message', $message, $user_id, $session_id);
1302 - //error_log('MxChat Core: Filter returned: ' . (is_array($pre_processed_result) ? 'array' : $pre_processed_result));
1303 -
1304 -
1305 - // If the pre-processing returned a result (not the original message), use it directly
1306 - if (is_array($pre_processed_result) && isset($pre_processed_result['text'])) {
1307 - // Save the AI response
1308 - $this->mxchat_save_chat_message($session_id, 'bot', $pre_processed_result['text']);
1309 -
1310 - // Save HTML content if provided
1311 - if (!empty($pre_processed_result['html'])) {
1312 - $this->mxchat_save_chat_message($session_id, 'bot', $pre_processed_result['html']);
1313 - }
1314 -
1315 - // Add testing data if admin
1316 - $response_data = [
1317 - 'text' => $pre_processed_result['text'],
1318 - 'html' => $pre_processed_result['html'] ?? '',
1319 - 'session_id' => $session_id
1320 - ];
1321 -
1322 - if ($testing_data !== null) {
1323 - $response_data['testing_data'] = $testing_data;
1324 - }
1325 -
1326 - wp_send_json($response_data);
1327 - wp_die();
1328 - }
1329 -
1330 - // Save the user's message - handle vision processed messages differently
1331 - if (isset($_POST['vision_processed']) && $_POST['vision_processed'] && isset($_POST['original_user_message'])) {
1332 - // For vision messages, save the original user message with image indicator
1333 - $original_message = sanitize_textarea_field($_POST['original_user_message']);
1334 - if (isset($_POST['vision_images_count']) && $_POST['vision_images_count'] > 0) {
1335 - $image_count = intval($_POST['vision_images_count']);
1336 - $original_message .= " [{$image_count} image(s)]";
1337 - }
1338 - $this->mxchat_save_chat_message($session_id, 'user', $original_message);
1339 - } else {
1340 - // Regular message - save as normal
1341 - $this->mxchat_save_chat_message($session_id, 'user', $message);
1342 - }
1343 -
1344 -
1345 - if (is_email($message)) {
1346 - // Add the email to Loops
1347 - $this->add_email_to_loops($message);
1348 -
1349 - // Get the user's success message instruction using current_options
1350 - $user_success_message = $current_options['email_capture_response'] ?? __('Thank you for providing your email! You\'ve been added to our list.', 'mxchat');
1351 -
1352 - // Set instruction for AI using the user's success message
1353 - $this->current_action_instruction = $user_success_message;
1354 -
1355 - // Clear the email capture transient since we got the email
1356 - delete_transient('mxchat_email_capture_' . $user_id);
1357 - }
1358 -
1359 - // Check if we're in an email capture flow but user hasn't provided email yet
1360 - elseif (get_transient('mxchat_email_capture_' . $user_id)) {
1361 - // Check if the message contains an email (not the whole message being an email)
1362 - if (preg_match('/\b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Z|a-z]{2,}\b/', $message, $matches)) {
1363 - $extracted_email = $matches[0];
1364 -
1365 - // Add the extracted email to Loops
1366 - $this->add_email_to_loops($extracted_email);
1367 -
1368 - // Get the user's success message instruction using current_options
1369 - $user_success_message = $current_options['email_capture_response'] ?? __('Thank you for providing your email! You\'ve been added to our list.', 'mxchat');
1370 -
1371 - // Set instruction for AI using the user's success message
1372 - $this->current_action_instruction = $user_success_message;
1373 -
1374 - // Clear the email capture transient since we got the email
1375 - delete_transient('mxchat_email_capture_' . $user_id);
1376 - }
1377 - // If no email found but we're in capture mode, remind them
1378 - else {
1379 - // Get the original instruction to remind them using current_options
1380 - $original_instruction = $current_options['triggered_phrase_response'] ?? __("Please provide your email address.", 'mxchat');
1381 - $this->current_action_instruction = $original_instruction;
1382 - }
1383 - }
1384 -
1385 - $intent_info = '';
1386 -
1387 - // Check chat mode
1388 - $chat_mode = get_option("mxchat_mode_{$session_id}", 'ai');
1389 -
1390 - // Handle agent mode
1391 - // Handle agent mode
1392 - if ($chat_mode === 'agent') {
1393 - // First, check for switch intent before doing anything else
1394 - $intent_matched = $this->mxchat_check_intent_and_invoke_callback($message, $user_id, $session_id);
1395 -
1396 - // Capture action analysis for testing panel after intent check
1397 - if ($testing_data !== null && isset($this->last_action_analysis) && !empty($this->last_action_analysis)) {
1398 - $testing_data['action_matches'] = $this->last_action_analysis;
1399 - }
1400 -
1401 - // Around line 506, in the agent mode handling section:
1402 - if ($intent_matched && !empty($this->fallbackResponse['text'])) {
1403 - // Update chat mode first
1404 - update_option("mxchat_mode_{$session_id}", 'ai');
1405 -
1406 - // Clear any existing PDF context to start fresh
1407 - $this->clear_pdf_transients($session_id);
1408 -
1409 - // Prepare clean switch response with explicit chat_mode
1410 - $response_data = [
1411 - 'text' => $this->fallbackResponse['text'],
1412 - 'html' => $this->fallbackResponse['html'] ?? '',
1413 - 'session_id' => $session_id,
1414 - 'chat_mode' => 'ai' // EXPLICITLY SET THIS
1415 - ];
1416 -
1417 - if ($testing_data !== null) {
1418 - $response_data['testing_data'] = $testing_data;
1419 - }
1420 -
1421 - // Save the mode switch message
1422 - $this->mxchat_save_chat_message($session_id, 'system', esc_html__('Switched to AI chat mode', 'mxchat'));
1423 - $this->mxchat_save_chat_message($session_id, 'bot', $this->fallbackResponse['text']);
1424 -
1425 - // Send response and exit
1426 - wp_send_json($response_data);
1427 - wp_die();
1428 - } elseif (!$intent_matched) {
1429 - // No intent matched, handle live agent message
1430 - try {
1431 - $this->mxchat_send_user_message_to_agent($message, $user_id, $session_id);
1432 -
1433 - $agent_response = [
1434 - 'status' => 'waiting_for_agent',
1435 - 'message' => esc_html__('Message sent to live agent.', 'mxchat')
1436 - ];
1437 -
1438 - if ($testing_data !== null) {
1439 - $agent_response['testing_data'] = $testing_data;
1440 - }
1441 -
1442 - wp_send_json_success($agent_response);
1443 - } catch (\Exception $e) {
1444 - wp_send_json_error(esc_html__('Failed to send message to agent', 'mxchat'));
1445 - }
1446 - wp_die();
1447 - }
1448 - }
1449 -
1450 - // Step 1: Check for new PDF URL in the message
1451 - if (!isset($_POST['vision_processed']) && preg_match('/https?:\/\/[^\s"]+/i', $message, $matches)) {
1452 - $new_pdf_url = $matches[0];
1453 -
1454 - // Check if this is likely a PDF-related request
1455 - $pdf_keywords = ['pdf', 'document', 'read', 'analyze'];
1456 - $is_pdf_request = false;
1457 -
1458 - foreach ($pdf_keywords as $keyword) {
1459 - if (stripos($message, $keyword) !== false) {
1460 - $is_pdf_request = true;
1461 - break;
1462 - }
1463 - }
1464 -
1465 - // If it looks like a PDF request or we're waiting for a PDF URL
1466 - if ($is_pdf_request || get_transient('mxchat_waiting_for_pdf_url_' . $session_id)) {
1467 - // Validate HTTPS
1468 - if (wp_http_validate_url($new_pdf_url) && parse_url($new_pdf_url, PHP_URL_SCHEME) === 'https') {
1469 - // Extract filename from URL
1470 - $pdf_filename = basename(parse_url($new_pdf_url, PHP_URL_PATH));
1471 -
1472 - // Clear previous PDF transients
1473 - $this->clear_pdf_transients($session_id);
1474 -
1475 - // Process new PDF using current_options
1476 - $max_pages = $current_options['pdf_max_pages'] ?? 69;
1477 - $embeddings = $this->fetch_and_split_pdf_pages($new_pdf_url, $max_pages);
1478 -
1479 - if ($embeddings === 'too_many_pages') {
1480 - $error_text = sprintf(
1481 - $current_options['pdf_intent_error_text'] ??
1482 - esc_html__("The provided PDF exceeds the maximum allowed limit of %d pages. Please provide a smaller document.", 'mxchat'),
1483 - $max_pages
1484 - );
1485 - $this->fallbackResponse['text'] = $error_text;
1486 - } elseif ($embeddings) {
1487 - // Store new PDF information
1488 - $pdf_filename = basename(parse_url($new_pdf_url, PHP_URL_PATH));
1489 -
1490 - // If the filename is generic, create a more descriptive one
1491 - if (in_array($pdf_filename, ['results_download.php', 'download.php', 'view.php', 'pdf.php']) ||
1492 - strpos($pdf_filename, '.php') !== false) {
1493 - $pdf_filename = 'Document_' . date('Y-m-d_H-i') . '.pdf';
1494 - }
1495 -
1496 - set_transient('mxchat_pdf_url_' . $session_id, $new_pdf_url, HOUR_IN_SECONDS);
1497 - set_transient('mxchat_pdf_filename_' . $session_id, $pdf_filename, HOUR_IN_SECONDS);
1498 - set_transient('mxchat_pdf_embeddings_' . $session_id, $embeddings, HOUR_IN_SECONDS);
1499 - set_transient('mxchat_include_pdf_in_context_' . $session_id, true, HOUR_IN_SECONDS);
1500 -
1501 - $success_text = $current_options['pdf_intent_success_text'] ??
1502 - esc_html__("I've processed the new PDF '{$pdf_filename}'. What questions do you have about it?", 'mxchat');
1503 -
1504 - $pdf_response = [
1505 - 'success' => true,
1506 - 'message' => $success_text,
1507 - 'data' => [
1508 - 'filename' => $pdf_filename
1509 - ]
1510 - ];
1511 -
1512 - if ($testing_data !== null) {
1513 - $pdf_response['testing_data'] = $testing_data;
1514 - }
1515 -
1516 - wp_send_json($pdf_response);
1517 - wp_die();
1518 - } else {
1519 - $error_text = $current_options['pdf_intent_error_text'] ??
1520 - esc_html__("Sorry, I couldn't process the PDF. Please ensure it's a valid file.", 'mxchat');
1521 - $this->fallbackResponse['text'] = $error_text;
1522 - }
1523 -
1524 - $pdf_error_response = [
1525 - 'success' => false,
1526 - 'message' => $this->fallbackResponse['text']
1527 - ];
1528 -
1529 - if ($testing_data !== null) {
1530 - $pdf_error_response['testing_data'] = $testing_data;
1531 - }
1532 -
1533 - wp_send_json($pdf_error_response);
1534 - wp_die();
1535 - }
1536 - }
1537 - }
1538 -
1539 -
1540 - // Step 2: Detect intent and handle intent-based responses
1541 - $intent_result = $this->mxchat_check_intent_and_invoke_callback($message, $user_id, $session_id);
1542 -
1543 - // Capture action analysis for testing panel after intent check
1544 - if ($testing_data !== null && isset($this->last_action_analysis) && !empty($this->last_action_analysis)) {
1545 - $testing_data['action_matches'] = $this->last_action_analysis;
1546 - }
1547 -
1548 - // Step 3: Handle the intent result appropriately
1549 - if ($intent_result !== false) {
1550 - // Intent was matched - ALWAYS send as JSON response, never streaming
1551 -
1552 - if (is_array($intent_result) && (isset($intent_result['text']) || isset($intent_result['html']))) {
1553 - // Intent returned a direct response array
1554 - $response_data = [
1555 - 'text' => $intent_result['text'] ?? '',
1556 - 'html' => $intent_result['html'] ?? '',
1557 - 'session_id' => $session_id
1558 - ];
1559 -
1560 - // IMPORTANT: Include chat_mode if present (for WhatsApp, Slack, etc.)
1561 - if (isset($intent_result['chat_mode'])) {
1562 - $response_data['chat_mode'] = $intent_result['chat_mode'];
1563 - }
1564 -
1565 - if ($testing_data !== null) {
1566 - $response_data['testing_data'] = $testing_data;
1567 - }
1568 -
1569 - wp_send_json($response_data);
1570 - wp_die();
1571 - } else if ($intent_result === true && (!empty($this->fallbackResponse['text']) || !empty($this->fallbackResponse['html']))) {
1572 - // Intent returned true and set fallbackResponse
1573 -
1574 - // SAVE TO TRANSCRIPT
1575 - if (!empty($this->fallbackResponse['text'])) {
1576 - $this->mxchat_save_chat_message($session_id, 'bot', $this->fallbackResponse['text']);
1577 - }
1578 - // Save action HTML (product cards, featured products, etc.) so it renders in transcripts
1579 - if (!empty($this->fallbackResponse['html'])) {
1580 - $this->mxchat_save_chat_message($session_id, 'bot', $this->fallbackResponse['html']);
1581 - }
1582 -
1583 - $response_data = [
1584 - 'text' => $this->fallbackResponse['text'] ?? '',
1585 - 'html' => $this->fallbackResponse['html'] ?? '',
1586 - 'session_id' => $session_id
1587 - ];
1588 -
1589 - if (isset($this->fallbackResponse['chat_mode'])) {
1590 - $response_data['chat_mode'] = $this->fallbackResponse['chat_mode'];
1591 - }
1592 -
1593 - if ($testing_data !== null) {
1594 - $response_data['testing_data'] = $testing_data;
1595 - }
1596 -
1597 - wp_send_json($response_data);
1598 - wp_die();
1599 - }
1600 - }
1601 -
1602 - // If we get here, no intent matched OR the intent didn't provide a usable response
1603 -
1604 - // Step 4: Generate AI response
1605 - // Get session start timestamp - when persistence is OFF, only include messages from this page load
1606 - $session_start_timestamp = isset($_POST['session_start_timestamp']) ? intval($_POST['session_start_timestamp']) : 0;
1607 - $conversation_history = $this->mxchat_fetch_conversation_history_for_ai($session_id, $session_start_timestamp);
1608 - $this->mxchat_increment_chat_count();
1609 -
1610 - // Generate embedding for the user's query - USE BOT-SPECIFIC API KEY
1611 - $api_key = $current_options['api_key'] ?? $this->options['api_key'];
1612 - $user_message_embedding = $this->mxchat_generate_embedding($message, $api_key);
1613 -
1614 - // Check if the embedding generation returned an error
1615 - if (is_array($user_message_embedding) && isset($user_message_embedding['error'])) {
1616 - $error_message = $user_message_embedding['error'];
1617 - $error_code = $user_message_embedding['error_code'] ?? 'embedding_error';
1618 -
1619 - // FIXED: Send error in appropriate format based on streaming mode
1620 - if ($is_streaming) {
1621 - echo "data: " . json_encode([
1622 - 'error' => true,
1623 - 'error_message' => $error_message,
1624 - 'error_code' => $error_code,
1625 - 'text' => $error_message,
1626 - 'message' => $error_message
1627 - ]) . "\n\n";
1628 - echo "data: [DONE]\n\n";
1629 - flush();
1630 - } else {
1631 - wp_send_json_error([
1632 - 'error_message' => $error_message,
1633 - 'error_code' => $error_code
1634 - ]);
1635 - }
1636 - wp_die();
1637 - }
1638 -
1639 - // Check if the embedding is valid
1640 - if (!is_array($user_message_embedding) || empty($user_message_embedding)) {
1641 - $error_message = esc_html__('Unable to process your message. The embedding service is not responding correctly.', 'mxchat');
1642 -
1643 - // FIXED: Send error in appropriate format based on streaming mode
1644 - if ($is_streaming) {
1645 - echo "data: " . json_encode([
1646 - 'error' => true,
1647 - 'error_message' => $error_message,
1648 - 'error_code' => 'invalid_embedding',
1649 - 'text' => $error_message,
1650 - 'message' => $error_message
1651 - ]) . "\n\n";
1652 - echo "data: [DONE]\n\n";
1653 - flush();
1654 - } else {
1655 - wp_send_json_error([
1656 - 'error_message' => $error_message,
1657 - 'error_code' => 'invalid_embedding'
1658 - ]);
1659 - }
1660 - wp_die();
1661 - }
1662 -
1663 - // Build context with both knowledge base and PDF content if available
1664 - $context_content = "User asked: '{$message}'\n\n";
1665 -
1666 - // Add action instruction if present (add this right after the above line)
1667 - if (!empty($this->current_action_instruction)) {
1668 - $context_content .= "===== SPECIAL INSTRUCTION =====\n";
1669 - $context_content .= "IMPORTANT: " . $this->current_action_instruction . "\n";
1670 - $context_content .= "Respond naturally and conversationally while following this instruction.\n";
1671 - $context_content .= "===== END SPECIAL INSTRUCTION =====\n\n";
1672 -
1673 - // Clear the instruction after using it
1674 - $this->current_action_instruction = null;
1675 - }
1676 -
1677 -
1678 - // Add page context if available and contextual awareness is enabled using current_options
1679 - if ($page_context && isset($current_options['contextual_awareness_toggle']) && $current_options['contextual_awareness_toggle'] === 'on') {
1680 - $context_content .= "===== CURRENT PAGE CONTEXT =====\n";
1681 - $context_content .= "Page URL: " . $page_context['url'] . "\n";
1682 - $context_content .= "Page Title: " . $page_context['title'] . "\n";
1683 - $context_content .= "Page Content: " . $page_context['content'] . "\n";
1684 - $context_content .= "===== END CURRENT PAGE CONTEXT =====\n\n";
1685 - }
1686 -
1687 - // Get relevant content from knowledge base - PASS BOT_ID and MESSAGE for Vector Store
1688 - $relevant_content = $this->mxchat_find_relevant_content($user_message_embedding, $bot_id, $message);
1689 -
1690 - // NEW: Also extract URLs from system instructions (only if citation links enabled)
1691 - // Use fresh options to ensure we get the latest setting value
1692 - $fresh_options = get_option('mxchat_options', []);
1693 - $citation_links_enabled = isset($fresh_options['citation_links_toggle']) ? ($fresh_options['citation_links_toggle'] === 'on') : true;
1694 -
1695 - $system_instructions = $this->get_system_instructions($bot_id, $session_id);
1696 - if ($citation_links_enabled && !empty($system_instructions)) {
1697 - preg_match_all(
1698 - '#\bhttps?://[^\s<>"\']+#i',
1699 - $system_instructions,
1700 - $system_instruction_urls
1701 - );
1702 -
1703 - if (!empty($system_instruction_urls[0])) {
1704 - // Merge with existing valid URLs
1705 - $this->current_valid_urls = array_merge(
1706 - $this->current_valid_urls,
1707 - $system_instruction_urls[0]
1708 - );
1709 - // Remove duplicates
1710 - $this->current_valid_urls = array_unique($this->current_valid_urls);
1711 -
1712 - //error_log("Added " . count($system_instruction_urls[0]) . " URLs from system instructions");
1713 - }
1714 - }
1715 -
1716 -// ===== CAPTURE REAL SIMILARITY DATA FOR ADMINS =====
1717 -if ($testing_data !== null && $this->last_similarity_analysis !== null) {
1718 - // Update testing data with the REAL similarity analysis
1719 - $testing_data['top_matches'] = $this->last_similarity_analysis['top_matches'];
1720 - $testing_data['total_documents_checked'] = $this->last_similarity_analysis['total_checked'] ?? 0;
1721 - $testing_data['knowledge_base_type'] = $this->last_similarity_analysis['knowledge_base_type'];
1722 - $testing_data['sources_used'] = $this->last_similarity_analysis['sources_used'] ?? 0;
1723 - $testing_data['total_chunks_used'] = $this->last_similarity_analysis['total_chunks_used'] ?? 0;
1724 -}
1725 -// ===== END SIMILARITY DATA CAPTURE =====
1726 -
1727 -// NEW: Add valid URLs to testing data for admin panel display (AFTER similarity data)
1728 -if ($testing_data !== null && !empty($this->current_valid_urls)) {
1729 - $testing_data['approved_urls'] = array_values($this->current_valid_urls);
1730 - //error_log("Added " . count($this->current_valid_urls) . " approved URLs to testing data");
1731 -}
1732 -
1733 - if (!empty($relevant_content)) {
1734 - $context_content .= "===== OFFICIAL KNOWLEDGE DATABASE CONTENT =====\n" . $relevant_content . "\n===== END OF OFFICIAL KNOWLEDGE DATABASE CONTENT =====\n\n";
1735 - } else {
1736 - $context_content .= "===== NO RELEVANT CONTENT FOUND IN KNOWLEDGE DATABASE =====\n";
1737 - }
1738 -
1739 - // NEW: Add approved URLs list to context for AI (only if citation links enabled)
1740 - if ($citation_links_enabled && !empty($this->current_valid_urls)) {
1741 - $context_content .= "===== APPROVED URLS FOR CITATIONS =====\n";
1742 - $context_content .= "You may ONLY use these exact URLs in your response:\n";
1743 - foreach ($this->current_valid_urls as $url) {
1744 - $context_content .= "- " . $url . "\n";
1745 - }
1746 - $context_content .= "\nCRITICAL: Do NOT create, modify, extend, or invent any other URLs. ";
1747 - $context_content .= "===== END APPROVED URLS =====\n\n";
1748 - }
1749 -
1750 - // Check for and include PDF content
1751 - $pdf_url = get_transient('mxchat_pdf_url_' . $session_id);
1752 - $pdf_embeddings = get_transient('mxchat_pdf_embeddings_' . $session_id);
1753 - $pdf_filename = get_transient('mxchat_pdf_filename_' . $session_id);
1754 - if ($pdf_url && $pdf_embeddings && get_transient('mxchat_include_pdf_in_context_' . $session_id)) {
1755 - $relevant_pdf_pages = $this->find_relevant_pdf_pages($user_message_embedding, $pdf_embeddings);
1756 - if (!empty($relevant_pdf_pages)) {
1757 - $context_content .= "Relevant content from PDF document '{$pdf_filename}':\n";
1758 - foreach ($relevant_pdf_pages as $page_data) {
1759 - $context_content .= "Page {$page_data['page_number']} of '{$pdf_filename}': {$page_data['text']}\n";
1760 - }
1761 - $context_content .= "\n";
1762 - }
1763 - }
1764 -
1765 - // Check for and include Word content
1766 - $word_url = get_transient('mxchat_word_url_' . $session_id);
1767 - $word_embeddings = get_transient('mxchat_word_embeddings_' . $session_id);
1768 - $word_filename = get_transient('mxchat_word_filename_' . $session_id);
1769 - if ($word_url && $word_embeddings && get_transient('mxchat_include_word_in_context_' . $session_id)) {
1770 - $relevant_word_chunks = $this->word_handler->mxchat_find_relevant_word_chunks($user_message_embedding, $word_embeddings);
1771 - if (!empty($relevant_word_chunks)) {
1772 - $context_content .= "Relevant content from Word document '{$word_filename}':\n";
1773 - foreach ($relevant_word_chunks as $chunk_data) {
1774 - $context_content .= "Section {$chunk_data['chunk_number']} of '{$word_filename}': {$chunk_data['text']}\n";
1775 - }
1776 - $context_content .= "\n";
1777 - }
1778 - }
1779 -
1780 - $context_content = apply_filters('mxchat_prepare_context', $context_content, $session_id);
1781 -
1782 - // Extract model from current options for bot-specific model support
1783 - $selected_model = isset($current_options['model']) ? $current_options['model'] : 'gpt-5.1-chat-latest';
1784 -
1785 - $response = $this->mxchat_generate_response(
1786 - $context_content,
1787 - $current_options['api_key'] ?? $this->options['api_key'],
1788 - $current_options['xai_api_key'] ?? $this->options['xai_api_key'],
1789 - $current_options['claude_api_key'] ?? $this->options['claude_api_key'],
1790 - $current_options['deepseek_api_key'] ?? $this->options['deepseek_api_key'],
1791 - $current_options['gemini_api_key'] ?? $this->options['gemini_api_key'],
1792 - $current_options['openrouter_api_key'] ?? $this->options['openrouter_api_key'],
1793 - $conversation_history,
1794 - $is_streaming,
1795 - $session_id,
1796 - $testing_data,
1797 - $selected_model
1798 - );
1799 -
1800 - // Handle streaming vs non-streaming responses
1801 - if ($is_streaming) {
1802 - // Check if streaming actually happened or if it fell back to regular response
1803 - if ($response === true) {
1804 - wp_die();
1805 - }
1806 - // If we get here, streaming fell back to regular response, continue
1807 - // But if there's an error, we need to send it as SSE format since headers are already set
1808 - if (is_array($response) && isset($response['error'])) {
1809 - $error_message = $response['error'];
1810 - $error_code = $response['error_code'] ?? 'api_error';
1811 - // Send error in SSE format that the client JS can handle
1812 - echo "data: " . json_encode([
1813 - 'error' => true,
1814 - 'error_message' => $error_message,
1815 - 'error_code' => $error_code,
1816 - 'text' => $error_message, // Also include as text for fallback handling
1817 - 'message' => $error_message
1818 - ]) . "\n\n";
1819 - echo "data: [DONE]\n\n";
1820 - flush();
1821 - wp_die();
1822 - }
1823 - }
1824 -
1825 - // Check if the response is an error array (non-streaming mode)
1826 - if (is_array($response) && isset($response['error'])) {
1827 - wp_send_json_error([
1828 - 'error_message' => $response['error'],
1829 - 'error_code' => $response['error_code'] ?? 'api_error'
1830 - ]);
1831 - wp_die();
1832 - }
1833 -
1834 - // DEBUG: Check what we have
1835 - //error_log("=== BEFORE URL VALIDATION ===");
1836 - //error_log("current_valid_urls is empty? " . (empty($this->current_valid_urls) ? 'YES' : 'NO'));
1837 - //error_log("current_valid_urls count: " . count($this->current_valid_urls));
1838 - //error_log("current_valid_urls content: " . print_r($this->current_valid_urls, true));
1839 -
1840 - // If we get here, the response is valid text - now validate URLs
1841 - if (!empty($this->current_valid_urls)) {
1842 - //error_log("CALLING validate_and_clean_urls");
1843 - $response = $this->validate_and_clean_urls($response, $this->current_valid_urls);
1844 - } else {
1845 - //error_log("SKIPPING validation - current_valid_urls is empty");
1846 - }
1847 - // ===== END URL VALIDATION =====
1848 -
1849 - // Prepare RAG context data for storage (only include documents used for context)
1850 - $rag_context_for_storage = null;
1851 - $has_rag_data = $this->last_similarity_analysis !== null && !empty($this->last_similarity_analysis['top_matches']);
1852 - $has_action_data = isset($this->last_action_analysis) && !empty($this->last_action_analysis);
1853 -
1854 - if ($has_rag_data || $has_action_data) {
1855 - $rag_context_for_storage = [];
1856 -
1857 - // Add RAG/source data if available
1858 - if ($has_rag_data) {
1859 - $rag_context_for_storage['top_matches'] = $this->last_similarity_analysis['top_matches'];
1860 - $rag_context_for_storage['approved_urls'] = $this->current_valid_urls ?? [];
1861 - $rag_context_for_storage['similarity_threshold'] = $this->last_similarity_analysis['threshold_used'] ?? 0.35;
1862 - $rag_context_for_storage['knowledge_base_type'] = $this->last_similarity_analysis['knowledge_base_type'] ?? 'WordPress Database';
1863 - $rag_context_for_storage['total_documents_checked'] = $this->last_similarity_analysis['total_checked'] ?? 0;
1864 - $rag_context_for_storage['sources_used'] = $this->last_similarity_analysis['sources_used'] ?? 0;
1865 - $rag_context_for_storage['total_chunks_used'] = $this->last_similarity_analysis['total_chunks_used'] ?? 0;
1866 - }
1867 -
1868 - // Add action analysis data if available
1869 - if ($has_action_data) {
1870 - $rag_context_for_storage['action_analysis'] = $this->last_action_analysis;
1871 - }
1872 - }
1873 -
1874 - // Save the cleaned response with RAG context
1875 - $this->mxchat_save_chat_message($session_id, 'bot', $response, null, $rag_context_for_storage);
1876 -
1877 - // Step 5: Save additional content if available
1878 - if (!empty($this->productCardHtml)) {
1879 - $this->mxchat_save_chat_message($session_id, 'bot', $this->productCardHtml);
1880 - }
1881 -
1882 - if (!empty($this->fallbackResponse['html'])) {
1883 - $this->mxchat_save_chat_message($session_id, 'bot', $this->fallbackResponse['html']);
1884 - }
1885 -
1886 - // Step 6: Return the response
1887 - // DEBUG: Check if newlines exist in the response
1888 - //error_log("=== MXCHAT NON-STREAMING RESPONSE DEBUG ===");
1889 - //error_log("Response has newlines: " . (strpos($response, "\n") !== false ? 'YES' : 'NO'));
1890 - //error_log("Response first 500 chars: " . substr($response, 0, 500));
1891 -
1892 - $response_data = [
1893 - 'text' => $response,
1894 - 'html' => !empty($this->productCardHtml) ? $this->productCardHtml : ($this->fallbackResponse['html'] ?? ''),
1895 - 'session_id' => $session_id
1896 - ];
1897 -
1898 - // Include vectorstore error info for admin debugging (only visible to admins via testing_data)
1899 - if (!empty($this->last_vectorstore_error) && $testing_data !== null) {
1900 - $testing_data['vectorstore_error'] = $this->last_vectorstore_error;
1901 - }
1902 -
1903 - // Also pass it as a top-level field so JS can show a better error message to admins
1904 - if (!empty($this->last_vectorstore_error) && current_user_can('manage_options')) {
1905 - $response_data['vectorstore_error'] = $this->last_vectorstore_error;
1906 - }
1907 -
1908 - // Always add testing data for admins (no toggle needed)
1909 - if ($testing_data !== null) {
1910 - $response_data['testing_data'] = $testing_data;
1911 - }
1912 -
1913 - wp_send_json($response_data);
1914 - wp_die();
1915 -}
1916 -
1917 -/**
1918 - * Get bot-specific options for multi-bot functionality
1919 - * Falls back to default options if bot_id is 'default' or multi-bot add-on is not active
1920 - */
1921 -// Also debug the bot options retrieval
1922 -private function get_bot_options($bot_id = 'default') {
1923 - //error_log("MXCHAT DEBUG: get_bot_options called for bot: " . $bot_id);
1924 -
1925 - if ($bot_id === 'default' || !class_exists('MxChat_Multi_Bot_Manager')) {
1926 - //error_log("MXCHAT DEBUG: Using default options (no multi-bot or bot is 'default')");
1927 - return array();
1928 - }
1929 -
1930 - $bot_options = apply_filters('mxchat_get_bot_options', array(), $bot_id);
1931 -
1932 - if (!empty($bot_options)) {
1933 - //error_log("MXCHAT DEBUG: Got bot-specific options from filter");
1934 - if (isset($bot_options['similarity_threshold'])) {
1935 - //error_log(" - similarity_threshold: " . $bot_options['similarity_threshold']);
1936 - }
1937 - }
1938 -
1939 - return is_array($bot_options) ? $bot_options : array();
1940 -}
1941 -
1942 -/**
1943 - * Get bot-specific Pinecone configuration
1944 - * Used in the knowledge retrieval functions
1945 - */
1946 -// Also add debugging to your get_bot_pinecone_config function
1947 -private function get_bot_pinecone_config($bot_id = 'default') {
1948 - //error_log("MXCHAT DEBUG: get_bot_pinecone_config called for bot: " . $bot_id);
1949 -
1950 - // If default bot or multi-bot add-on not active, use default Pinecone config
1951 - if ($bot_id === 'default' || !class_exists('MxChat_Multi_Bot_Manager')) {
1952 - //error_log("MXCHAT DEBUG: Using default Pinecone config (no multi-bot or bot is 'default')");
1953 - $addon_options = get_option('mxchat_pinecone_addon_options', array());
1954 - $config = array(
1955 - 'use_pinecone' => (isset($addon_options['mxchat_use_pinecone']) && $addon_options['mxchat_use_pinecone'] === '1'),
1956 - 'api_key' => $addon_options['mxchat_pinecone_api_key'] ?? '',
1957 - 'host' => $addon_options['mxchat_pinecone_host'] ?? '',
1958 - 'namespace' => $addon_options['mxchat_pinecone_namespace'] ?? ''
1959 - );
1960 - //error_log("MXCHAT DEBUG: Default config - use_pinecone: " . ($config['use_pinecone'] ? 'true' : 'false'));
1961 - return $config;
1962 - }
1963 -
1964 - //error_log("MXCHAT DEBUG: Calling filter 'mxchat_get_bot_pinecone_config' for bot: " . $bot_id);
1965 -
1966 - // Hook for multi-bot add-on to provide bot-specific Pinecone config
1967 - $bot_pinecone_config = apply_filters('mxchat_get_bot_pinecone_config', array(), $bot_id);
1968 -
1969 - if (!empty($bot_pinecone_config)) {
1970 - //error_log("MXCHAT DEBUG: Got bot-specific config from filter");
1971 - //error_log(" - use_pinecone: " . (isset($bot_pinecone_config['use_pinecone']) ? ($bot_pinecone_config['use_pinecone'] ? 'true' : 'false') : 'not set'));
1972 - //error_log(" - host: " . ($bot_pinecone_config['host'] ?? 'not set'));
1973 - //error_log(" - namespace: " . ($bot_pinecone_config['namespace'] ?? 'not set'));
1974 - } else {
1975 - //error_log("MXCHAT DEBUG: Filter returned empty config!");
1976 - }
1977 -
1978 - return is_array($bot_pinecone_config) ? $bot_pinecone_config : array();
1979 -}
1980 -
1981 -
1982 -// Updated function to check intents and invoke the callback function
1983 -private function mxchat_check_intent_and_invoke_callback($message, $user_id, $session_id) {
1984 - global $wpdb;
1985 - $chat_mode = get_option("mxchat_mode_{$session_id}", 'ai');
1986 -
1987 - // Get the current bot_id
1988 - $current_bot_id = $this->get_current_bot_id($session_id);
1989 -
1990 - // Generate the user embedding
1991 - $user_embedding = $this->mxchat_generate_embedding($message, $this->options['api_key']);
1992 -
1993 - // Check if embedding generation returned an error
1994 - if (is_array($user_embedding) && isset($user_embedding['error'])) {
1995 - $error_message = $user_embedding['error'];
1996 - $error_code = $user_embedding['error_code'] ?? 'embedding_error';
1997 -
1998 - // FIXED: Send error in appropriate format based on streaming mode
1999 - if ($this->is_streaming) {
2000 - echo "data: " . json_encode([
2001 - 'error' => true,
2002 - 'error_message' => $error_message,
2003 - 'error_code' => $error_code,
2004 - 'text' => $error_message,
2005 - 'message' => $error_message
2006 - ]) . "\n\n";
2007 - echo "data: [DONE]\n\n";
2008 - flush();
2009 - } else {
2010 - wp_send_json_error([
2011 - 'error_message' => $error_message,
2012 - 'error_code' => $error_code
2013 - ]);
2014 - }
2015 - wp_die();
2016 - }
2017 -
2018 - // Check if embedding is valid
2019 - if (!is_array($user_embedding) || empty($user_embedding)) {
2020 - $error_message = esc_html__('Unable to process your message. The embedding service is not responding correctly.', 'mxchat');
2021 -
2022 - // FIXED: Send error in appropriate format based on streaming mode
2023 - if ($this->is_streaming) {
2024 - echo "data: " . json_encode([
2025 - 'error' => true,
2026 - 'error_message' => $error_message,
2027 - 'error_code' => 'invalid_embedding',
2028 - 'text' => $error_message,
2029 - 'message' => $error_message
2030 - ]) . "\n\n";
2031 - echo "data: [DONE]\n\n";
2032 - flush();
2033 - } else {
2034 - wp_send_json_error([
2035 - 'error_message' => $error_message,
2036 - 'error_code' => 'invalid_embedding'
2037 - ]);
2038 - }
2039 - wp_die();
2040 - }
2041 -
2042 - // Fetch intents from the database
2043 - $table_name = $wpdb->prefix . 'mxchat_intents';
2044 - if ($chat_mode === 'agent') {
2045 - $query = $wpdb->prepare(
2046 - "SELECT * FROM $table_name WHERE callback_function = %s AND (enabled = 1 OR enabled IS NULL)",
2047 - 'mxchat_handle_switch_to_chatbot_intent'
2048 - );
2049 - $intents = $wpdb->get_results($query);
2050 - } else {
2051 - $intents = $wpdb->get_results("SELECT * FROM $table_name WHERE enabled = 1 OR enabled IS NULL");
2052 - }
2053 -
2054 - if (empty($intents)) {
2055 - return false;
2056 - }
2057 -
2058 - // Prefetch individual phrase vectors from wp_mxchat_intent_phrases (grouped by intent_id)
2059 - $phrases_table = $wpdb->prefix . 'mxchat_intent_phrases';
2060 - $phrases_by_intent = [];
2061 - if ($wpdb->get_var("SHOW TABLES LIKE '$phrases_table'") === $phrases_table) {
2062 - $all_phrases = $wpdb->get_results("SELECT intent_id, phrase, embedding_vector FROM $phrases_table");
2063 - foreach ($all_phrases as $p) {
2064 - $phrases_by_intent[$p->intent_id][] = $p;
2065 - }
2066 - }
2067 -
2068 - $highest_similarity = -INF;
2069 - $matched_intent = null;
2070 -
2071 - // Array to store action analysis for testing panel
2072 - $action_analysis = [];
2073 -
2074 - foreach ($intents as $intent) {
2075 - // Additional check for enabled state
2076 - $is_enabled = isset($intent->enabled) ? (bool)$intent->enabled : true;
2077 - if (!$is_enabled) {
2078 - continue;
2079 - }
2080 -
2081 - // Check if this action is enabled for the current bot
2082 - if (!$this->is_action_enabled_for_bot($intent, $current_bot_id)) {
2083 - continue;
2084 - }
2085 -
2086 - $best_similarity = -INF;
2087 - $matched_phrase_text = '';
2088 -
2089 - // Check legacy embedding vector (existing behavior)
2090 - $intent_embedding_serialized = $intent->embedding_vector;
2091 - $intent_embedding = $intent_embedding_serialized
2092 - ? unserialize($intent_embedding_serialized, ['allowed_classes' => false])
2093 - : null;
2094 -
2095 - if (is_array($intent_embedding) && !empty($intent_embedding)) {
2096 - $legacy_similarity = $this->mxchat_calculate_cosine_similarity($user_embedding, $intent_embedding);
2097 - if ($legacy_similarity > $best_similarity) {
2098 - $best_similarity = $legacy_similarity;
2099 - $matched_phrase_text = 'legacy';
2100 - }
2101 - }
2102 -
2103 - // Check individual phrase vectors
2104 - if (isset($phrases_by_intent[$intent->id])) {
2105 - foreach ($phrases_by_intent[$intent->id] as $phrase_row) {
2106 - $phrase_embedding = $phrase_row->embedding_vector
2107 - ? unserialize($phrase_row->embedding_vector, ['allowed_classes' => false])
2108 - : null;
2109 - if (!is_array($phrase_embedding)) {
2110 - continue;
2111 - }
2112 - $phrase_similarity = $this->mxchat_calculate_cosine_similarity($user_embedding, $phrase_embedding);
2113 - if ($phrase_similarity > $best_similarity) {
2114 - $best_similarity = $phrase_similarity;
2115 - $matched_phrase_text = $phrase_row->phrase;
2116 - }
2117 - }
2118 - }
2119 -
2120 - // Skip if no valid embedding was found at all
2121 - if ($best_similarity === -INF) {
2122 - continue;
2123 - }
2124 -
2125 - $similarity = $best_similarity;
2126 - $intent_threshold = isset($intent->similarity_threshold) ? $intent->similarity_threshold : 0.85;
2127 -
2128 - // Store action analysis data for testing panel
2129 - $action_analysis[] = [
2130 - 'intent_label' => $intent->intent_label,
2131 - 'callback_function' => $intent->callback_function,
2132 - 'similarity' => round($similarity, 4),
2133 - 'similarity_percentage' => round($similarity * 100, 2),
2134 - 'threshold' => $intent_threshold,
2135 - 'threshold_percentage' => round($intent_threshold * 100, 2),
2136 - 'above_threshold' => $similarity >= $intent_threshold,
2137 - 'matched_phrase' => $matched_phrase_text,
2138 - 'triggered' => false // Will be updated below if this intent is triggered
2139 - ];
2140 -
2141 - if ($similarity >= $intent_threshold && $similarity > $highest_similarity) {
2142 - $highest_similarity = $similarity;
2143 - $matched_intent = $intent;
2144 - }
2145 - }
2146 -
2147 - // Mark the triggered action if any
2148 - if ($matched_intent) {
2149 - foreach ($action_analysis as &$action) {
2150 - if ($action['intent_label'] === $matched_intent->intent_label) {
2151 - $action['triggered'] = true;
2152 - break;
2153 - }
2154 - }
2155 - }
2156 -
2157 - // Sort actions by similarity (highest first) and store for testing panel
2158 - usort($action_analysis, function($a, $b) {
2159 - return $b['similarity'] <=> $a['similarity'];
2160 - });
2161 -
2162 - // Store action analysis for testing panel capture
2163 - $this->last_action_analysis = $action_analysis;
2164 -
2165 - // Around line 715 in your mxchat_check_intent_and_invoke_callback function
2166 - if ($matched_intent) {
2167 - // If the callback is a method on this instance (core callback), call it directly
2168 - if (method_exists($this, $matched_intent->callback_function)) {
2169 - $callback_result = call_user_func(
2170 - [$this, $matched_intent->callback_function],
2171 - $message,
2172 - $user_id,
2173 - $session_id,
2174 - $matched_intent,
2175 - $user_context ?? null
2176 - );
2177 - } else {
2178 - // Otherwise, use apply_filters for add-on callbacks
2179 - $callback_result = apply_filters(
2180 - $matched_intent->callback_function,
2181 - false,
2182 - $message,
2183 - $user_id,
2184 - $session_id,
2185 - $matched_intent
2186 - );
2187 - }
2188 -
2189 - // Handle the callback result properly
2190 - if ($callback_result !== false) {
2191 - // If callback returned an array with chat_mode, use it directly
2192 - if (is_array($callback_result) && isset($callback_result['chat_mode'])) {
2193 - $this->fallbackResponse = $callback_result;
2194 - return $callback_result; // Return the full array
2195 - } else {
2196 - $this->fallbackResponse = $callback_result;
2197 - return true;
2198 - }
2199 - }
2200 - }
2201 -
2202 - return false;
2203 -}
2204 -
2205 -/**
2206 - * Check if an action is enabled for a specific bot
2207 - */
2208 -private function is_action_enabled_for_bot($intent, $bot_id) {
2209 - // If enabled_bots column doesn't exist or is null, assume it's enabled for all bots (backward compatibility)
2210 - if (!isset($intent->enabled_bots) || empty($intent->enabled_bots)) {
2211 - return true;
2212 - }
2213 -
2214 - $enabled_bots = json_decode($intent->enabled_bots, true);
2215 -
2216 - // If JSON decode fails or returns empty array, assume enabled for all (backward compatibility)
2217 - if (!is_array($enabled_bots) || empty($enabled_bots)) {
2218 - return true;
2219 - }
2220 -
2221 - // Admin testing tab uses bot_id "testing" — treat it as "default" so all
2222 - // default-bot actions are testable from the admin panel
2223 - if ($bot_id === 'testing') {
2224 - $bot_id = 'default';
2225 - }
2226 -
2227 - // Check if the current bot is in the enabled bots list
2228 - return in_array($bot_id, $enabled_bots);
2229 -}
2230 -
2231 -// Helper function to clear PDF and Word document related transients
2232 -private function clear_pdf_transients($session_id) {
2233 - // PDF transients
2234 - delete_transient('mxchat_pdf_url_' . $session_id);
2235 - delete_transient('mxchat_pdf_embeddings_' . $session_id);
2236 - delete_transient('mxchat_include_pdf_in_context_' . $session_id);
2237 - delete_transient('mxchat_waiting_for_pdf_url_' . $session_id);
2238 -
2239 - // Word document transients
2240 - delete_transient('mxchat_word_url_' . $session_id);
2241 - delete_transient('mxchat_word_filename_' . $session_id);
2242 - delete_transient('mxchat_word_embeddings_' . $session_id);
2243 - delete_transient('mxchat_include_word_in_context_' . $session_id);
2244 - delete_transient('mxchat_waiting_for_word_' . $session_id);
2245 -}
2246 -
2247 -
2248 -
2249 -//verified good
2250 -public function mxchat_handle_email_capture($message, $user_id, $session_id) {
2251 - // Get the user's original instruction/message
2252 - $user_instruction = esc_html($this->options['triggered_phrase_response'] ?? esc_html__("Please provide your email address.", 'mxchat'));
2253 -
2254 - // Set instruction for AI - just pass along what the user wanted to say
2255 - $this->current_action_instruction = $user_instruction;
2256 -
2257 - // Set the transient to track email capture flow
2258 - set_transient('mxchat_email_capture_' . $user_id, true, 5 * MINUTE_IN_SECONDS);
2259 -
2260 - // Return false to let the AI generate the response
2261 - return false;
2262 -}
2263 -
2264 -public function mxchat_generate_image($message, $user_id, $session_id) {
2265 - //error_log("Starting image generation for message: " . $message);
2266 -
2267 - // Prepare a prompt for OpenAI image generation
2268 - $prompt = esc_html__('Create an image of ', 'mxchat') . sanitize_text_field($message);
2269 -
2270 - // Use the existing OpenAI API key
2271 - $openai_api_key = sanitize_text_field($this->options['api_key']);
2272 -
2273 - // Call OpenAI GPT Image to generate an image
2274 - $image_response = $this->mxchat_generate_openai_image($prompt, $openai_api_key);
2275 -
2276 - // Check if the response contains an image URL
2277 - if (isset($image_response['imageUrl'])) {
2278 - $image_url = esc_url_raw($image_response['imageUrl']);
2279 -
2280 - // Construct the HTML with a CSS class instead of inline styles
2281 - $response_html = '<img src="' . esc_url($image_url) . '" alt="' . esc_attr__('Generated Image', 'mxchat') . '" class="mxchat-generated-image" />';
2282 - $response_text = esc_html__('Here is the image I generated:', 'mxchat');
2283 -
2284 - // Save the bot message with both text and HTML
2285 - $this->mxchat_save_chat_message($session_id, 'bot', $response_text);
2286 - $this->mxchat_save_chat_message($session_id, 'bot', $response_html);
2287 -
2288 - // Set the fallback response for the chat handler
2289 - $this->fallbackResponse = [
2290 - 'text' => $response_text,
2291 - 'html' => $response_html,
2292 - 'images' => [$image_url]
2293 - ];
2294 -
2295 - // For debugging/verification - Use json_encode to verify what's being set
2296 - //error_log("Image generation successful - fallbackResponse set: " . json_encode($this->fallbackResponse));
2297 -
2298 - // Return the response directly instead of relying on the property
2299 - return $this->fallbackResponse;
2300 - } else {
2301 - $response_text = esc_html__("I'm sorry, but I couldn't generate an image based on your request.", 'mxchat');
2302 -
2303 - // Save the error message
2304 - $this->mxchat_save_chat_message($session_id, 'bot', $response_text);
2305 -
2306 - // Set the fallback response for the chat handler
2307 - $this->fallbackResponse = [
2308 - 'text' => $response_text,
2309 - 'html' => '',
2310 - 'images' => []
2311 - ];
2312 -
2313 - //error_log("DALL-E image generation error: " . esc_html($image_response['error'] ?? 'Unknown error.'));
2314 - //error_log("Error fallbackResponse set: " . json_encode($this->fallbackResponse));
2315 -
2316 - // Return the response directly instead of relying on the property
2317 - return $this->fallbackResponse;
2318 - }
2319 -}
2320 -
2321 -public function mxchat_generate_gemini_image($message, $user_id, $session_id) {
2322 - $prompt = esc_html__('Create an image of ', 'mxchat') . sanitize_text_field($message);
2323 -
2324 - $gemini_api_key = sanitize_text_field($this->options['gemini_api_key'] ?? '');
2325 - if (empty($gemini_api_key)) {
2326 - $response_text = esc_html__("Gemini API key is not configured.", 'mxchat');
2327 - $this->mxchat_save_chat_message($session_id, 'bot', $response_text);
2328 - return ['text' => $response_text, 'html' => '', 'images' => []];
2329 - }
2330 -
2331 - $image_response = $this->mxchat_generate_imagen_image($prompt, $gemini_api_key);
2332 -
2333 - if (isset($image_response['imageUrl'])) {
2334 - $image_url = esc_url_raw($image_response['imageUrl']);
2335 -
2336 - $response_html = '<img src="' . esc_url($image_url) . '" alt="' . esc_attr__('Generated Image', 'mxchat') . '" class="mxchat-generated-image" />';
2337 - $response_text = esc_html__('Here is the image I generated:', 'mxchat');
2338 -
2339 - $this->mxchat_save_chat_message($session_id, 'bot', $response_text);
2340 - $this->mxchat_save_chat_message($session_id, 'bot', $response_html);
2341 -
2342 - $this->fallbackResponse = [
2343 - 'text' => $response_text,
2344 - 'html' => $response_html,
2345 - 'images' => [$image_url]
2346 - ];
2347 -
2348 - return $this->fallbackResponse;
2349 - } else {
2350 - $response_text = esc_html__("I'm sorry, but I couldn't generate an image based on your request.", 'mxchat');
2351 -
2352 - $this->mxchat_save_chat_message($session_id, 'bot', $response_text);
2353 -
2354 - $this->fallbackResponse = [
2355 - 'text' => $response_text,
2356 - 'html' => '',
2357 - 'images' => []
2358 - ];
2359 -
2360 - return $this->fallbackResponse;
2361 - }
2362 -}
2363 -
2364 -private function mxchat_save_generated_image($base64_data, $mime_type = 'image/png', $prefix = 'mxchat-generated') {
2365 - $extension = ($mime_type === 'image/jpeg') ? 'jpg' : 'png';
2366 - $filename = sanitize_file_name($prefix . '-' . wp_generate_uuid4() . '.' . $extension);
2367 - $decoded = base64_decode($base64_data);
2368 -
2369 - if ($decoded === false) {
2370 - return new \WP_Error('decode_failed', esc_html__('Failed to decode image data.', 'mxchat'));
2371 - }
2372 -
2373 - $upload = wp_upload_bits($filename, null, $decoded);
2374 -
2375 - if (!empty($upload['error'])) {
2376 - return new \WP_Error('upload_failed', $upload['error']);
2377 - }
2378 -
2379 - $attach_id = wp_insert_attachment([
2380 - 'post_mime_type' => $mime_type,
2381 - 'post_title' => $prefix,
2382 - 'post_content' => '',
2383 - 'post_status' => 'inherit',
2384 - ], $upload['file']);
2385 -
2386 - if (is_wp_error($attach_id)) {
2387 - return $attach_id;
2388 - }
2389 -
2390 - require_once ABSPATH . 'wp-admin/includes/image.php';
2391 - $metadata = wp_generate_attachment_metadata($attach_id, $upload['file']);
2392 - wp_update_attachment_metadata($attach_id, $metadata);
2393 -
2394 - return esc_url_raw(wp_get_attachment_url($attach_id));
2395 -}
2396 -
2397 -private function mxchat_generate_openai_image($prompt, $api_key, $model = 'gpt-image-1', $timeout = 60) {
2398 - $api_url = 'https://api.openai.com/v1/images/generations';
2399 - $body = json_encode([
2400 - 'prompt' => sanitize_text_field($prompt),
2401 - 'n' => 1,
2402 - 'size' => '1024x1024',
2403 - 'quality' => 'medium',
2404 - 'output_format' => 'png',
2405 - 'model' => sanitize_text_field($model),
2406 - ]);
2407 -
2408 - $args = [
2409 - 'body' => $body,
2410 - 'headers' => [
2411 - 'Content-Type' => 'application/json',
2412 - 'Authorization' => 'Bearer ' . sanitize_text_field($api_key),
2413 - ],
2414 - 'method' => 'POST',
2415 - 'timeout' => absint($timeout),
2416 - ];
2417 -
2418 - $response = wp_remote_post($api_url, $args);
2419 -
2420 - if (is_wp_error($response)) {
2421 - return ['error' => esc_html__('Error generating image: ', 'mxchat') . $response->get_error_message()];
2422 - }
2423 -
2424 - $response_body = json_decode(wp_remote_retrieve_body($response), true);
2425 -
2426 - $b64 = $response_body['data'][0]['b64_json'] ?? $response_body['data'][0]['b64'] ?? null;
2427 - if ($b64) {
2428 - $saved_url = $this->mxchat_save_generated_image($b64, 'image/png', 'mxchat-openai');
2429 - if (is_wp_error($saved_url)) {
2430 - return ['error' => $saved_url->get_error_message()];
2431 - }
2432 - return ['imageUrl' => $saved_url];
2433 - } else {
2434 - return ['error' => esc_html__('Failed to generate image.', 'mxchat')];
2435 - }
2436 -}
2437 -
2438 -private function mxchat_generate_imagen_image($prompt, $api_key, $timeout = 60) {
2439 - $api_url = 'https://generativelanguage.googleapis.com/v1beta/models/imagen-4.0-generate-001:predict';
2440 -
2441 - $body = json_encode([
2442 - 'instances' => [['prompt' => sanitize_text_field($prompt)]],
2443 - 'parameters' => [
2444 - 'sampleCount' => 1,
2445 - 'aspectRatio' => '1:1',
2446 - ],
2447 - ]);
2448 -
2449 - $args = [
2450 - 'body' => $body,
2451 - 'headers' => [
2452 - 'Content-Type' => 'application/json',
2453 - 'x-goog-api-key' => sanitize_text_field($api_key),
2454 - ],
2455 - 'method' => 'POST',
2456 - 'timeout' => absint($timeout),
2457 - ];
2458 -
2459 - $response = wp_remote_post($api_url, $args);
2460 -
2461 - if (is_wp_error($response)) {
2462 - return ['error' => esc_html__('Error generating image: ', 'mxchat') . $response->get_error_message()];
2463 - }
2464 -
2465 - $response_body = json_decode(wp_remote_retrieve_body($response), true);
2466 -
2467 - $b64 = $response_body['predictions'][0]['bytesBase64Encoded'] ?? $response_body['predictions'][0]['imageBytes'] ?? null;
2468 - if ($b64) {
2469 - $mime = $response_body['predictions'][0]['mimeType'] ?? 'image/png';
2470 - $saved_url = $this->mxchat_save_generated_image($b64, $mime, 'mxchat-gemini');
2471 - if (is_wp_error($saved_url)) {
2472 - return ['error' => $saved_url->get_error_message()];
2473 - }
2474 - return ['imageUrl' => $saved_url];
2475 - } else {
2476 - return ['error' => esc_html__('Failed to generate image.', 'mxchat')];
2477 - }
2478 -}
2479 -
2480 -/**
2481 - * Handle web search requests.
2482 - *
2483 - * Sends the refined search query to the Brave Search API and uses the
2484 - * results to generate a conversational response with the AI model.
2485 - *
2486 - * @since 1.0.0
2487 - * @param string $message The user's search query.
2488 - * @param string $user_id The user identifier.
2489 - * @param string $session_id The current session ID.
2490 - * @return array Response array containing text with embedded HTML links
2491 - */
2492 -public function mxchat_handle_search_request($message, $user_id, $session_id) {
2493 - // Step 1: Interpret and refine the search query
2494 - $refined_search_query = $this->mxchat_interpret_search_query($message);
2495 - if (empty($refined_search_query)) {
2496 - return array(
2497 - 'text' => esc_html__('I apologize, but could you please rephrase your search request?', 'mxchat'),
2498 - 'html' => ''
2499 - );
2500 - }
2501 -
2502 - // Retrieve and validate API settings
2503 - $options = get_option('mxchat_options');
2504 - $api_key = isset($options['brave_api_key']) ? sanitize_text_field($options['brave_api_key']) : '';
2505 - $results_count = isset($options['brave_results_count']) ? absint($options['brave_results_count']) : 5;
2506 -
2507 - if (empty($api_key)) {
2508 - return array(
2509 - 'text' => esc_html__('Search functionality is temporarily unavailable. Please try again later.', 'mxchat'),
2510 - 'html' => ''
2511 - );
2512 - }
2513 -
2514 - // Build the API request URL
2515 - $api_url = add_query_arg(
2516 - array(
2517 - 'q' => rawurlencode($refined_search_query),
2518 - 'count' => $results_count,
2519 - 'text_decorations' => 'true',
2520 - 'rich_data' => 'true',
2521 - ),
2522 - 'https://api.search.brave.com/res/v1/web/search'
2523 - );
2524 -
2525 - // Attempt to retrieve cached results first
2526 - $transient_key = 'mxchat_search_' . md5($refined_search_query);
2527 - $results = get_transient($transient_key);
2528 -
2529 - if (false === $results) {
2530 - // SECURITY FIX: Changed to wp_safe_remote_get
2531 - $response = wp_safe_remote_get(
2532 - $api_url,
2533 - array(
2534 - 'headers' => array(
2535 - 'Accept' => 'application/json',
2536 - 'Accept-Encoding' => 'gzip',
2537 - 'X-Subscription-Token'=> $api_key,
2538 - ),
2539 - 'timeout' => 10,
2540 - )
2541 - );
2542 -
2543 - if (is_wp_error($response)) {
2544 - return array(
2545 - 'text' => esc_html__('I encountered an error while searching. Please try again.', 'mxchat'),
2546 - 'html' => ''
2547 - );
2548 - }
2549 -
2550 - $results = json_decode(wp_remote_retrieve_body($response), true);
2551 -
2552 - if (json_last_error() !== JSON_ERROR_NONE) {
2553 - return array(
2554 - 'text' => esc_html__('I received an invalid response from the search service.', 'mxchat'),
2555 - 'html' => ''
2556 - );
2557 - }
2558 -
2559 - // Cache results for one hour
2560 - set_transient($transient_key, $results, HOUR_IN_SECONDS);
2561 - }
2562 -
2563 - // Process results
2564 - if (!empty($results['web']['results']) && is_array($results['web']['results'])) {
2565 - // Create a more straightforward summary with HTML links
2566 - $search_results_text = '';
2567 -
2568 - // Add a simple intro
2569 - $search_results_text .= sprintf(
2570 - esc_html__("Here's what I found about '%s':", 'mxchat'),
2571 - esc_html($refined_search_query)
2572 - );
2573 -
2574 - // Add the top results with HTML links
2575 - foreach (array_slice($results['web']['results'], 0, 5) as $result) {
2576 - $title = isset($result['title']) ? wp_strip_all_tags($result['title']) : '';
2577 - $url = isset($result['url']) ? esc_url($result['url']) : '';
2578 - $description = isset($result['description']) ? wp_strip_all_tags($result['description']) : '';
2579 -
2580 - // Add a line break after the intro
2581 - $search_results_text .= '<br><br>';
2582 -
2583 - // Add title as a link
2584 - $search_results_text .= sprintf(
2585 - '<a href="%s" target="_blank" rel="noopener noreferrer">%s</a><br>',
2586 - $url,
2587 - $title
2588 - );
2589 -
2590 - // Add a condensed description
2591 - $search_results_text .= sprintf("%s", $description);
2592 - }
2593 -
2594 - // Save to chat history
2595 - $this->mxchat_save_chat_message($session_id, 'bot', $search_results_text);
2596 -
2597 - // Return the formatted text with embedded HTML links
2598 - return array(
2599 - 'text' => $search_results_text,
2600 - 'html' => ''
2601 - );
2602 - } else {
2603 - return array(
2604 - 'text' => sprintf(
2605 - esc_html__('I searched for "%s" but couldn\'t find any relevant results. Would you like to try different search terms?', 'mxchat'),
2606 - esc_html($refined_search_query)
2607 - ),
2608 - 'html' => ''
2609 - );
2610 - }
2611 -}
2612 -
2613 -//very good
2614 -/**
2615 - * Handle image search requests from the chatbot
2616 - *
2617 - * @param string $message The user's search query
2618 - * @param int $user_id The user's ID
2619 - * @param string $session_id The chat session ID
2620 - * @return array Response array with text and HTML content
2621 - */
2622 -public function mxchat_handle_image_search_request($message, $user_id, $session_id) {
2623 - // Step 1: Interpret the search query using the user's selected AI model
2624 - $refined_search_query = $this->mxchat_interpret_search_query($message);
2625 -
2626 - // If no query was interpreted, return a fallback message
2627 - if (empty($refined_search_query)) {
2628 - return array(
2629 - 'text' => __("I'm sorry, I couldn't interpret your search query. Please specify what you'd like to see images of.", 'mxchat'),
2630 - 'html' => "",
2631 - );
2632 - }
2633 -
2634 - // Brave API URL
2635 - $api_url = 'https://api.search.brave.com/res/v1/images/search';
2636 -
2637 - // Retrieve Brave API settings
2638 - $options = get_option('mxchat_options');
2639 - $api_key = isset($options['brave_api_key']) ? sanitize_text_field($options['brave_api_key']) : '';
2640 -
2641 - if (empty($api_key)) {
2642 - return array(
2643 - 'text' => __("API key is not configured. Please set it in the Brave Search Settings.", 'mxchat'),
2644 - 'html' => "",
2645 - );
2646 - }
2647 -
2648 - $image_count = isset($options['brave_image_count']) ? intval($options['brave_image_count']) : 4;
2649 - $safe_search = isset($options['brave_safe_search']) ? sanitize_text_field($options['brave_safe_search']) : 'strict';
2650 -
2651 - // Append query parameters based on settings
2652 - $api_url = add_query_arg([
2653 - 'q' => rawurlencode($refined_search_query),
2654 - 'count' => $image_count,
2655 - 'safesearch' => $safe_search,
2656 - ], $api_url);
2657 -
2658 - // Implement caching
2659 - $transient_key = 'mxchat_image_search_' . md5($refined_search_query);
2660 - $body = get_transient($transient_key);
2661 -
2662 - if (false === $body) {
2663 - $args = [
2664 - 'headers' => [
2665 - 'Accept' => 'application/json',
2666 - 'Accept-Encoding' => 'gzip',
2667 - 'X-Subscription-Token' => $api_key,
2668 - ],
2669 - 'timeout' => 10,
2670 - ];
2671 -
2672 - // SECURITY FIX: Changed to wp_safe_remote_get
2673 - $response = wp_safe_remote_get($api_url, $args);
2674 -
2675 - if (is_wp_error($response)) {
2676 - return array(
2677 - 'text' => __("I'm sorry, I couldn't retrieve any images based on your request.", 'mxchat'),
2678 - 'html' => "",
2679 - );
2680 - }
2681 -
2682 - $body = json_decode(wp_remote_retrieve_body($response), true);
2683 - set_transient($transient_key, $body, HOUR_IN_SECONDS);
2684 - }
2685 -
2686 - // Process the API response
2687 - if (isset($body['results']) && is_array($body['results']) && count($body['results']) > 0) {
2688 - $html_output = '<div class="mxchat-image-gallery">';
2689 -
2690 - // Get the configured image count (1-6)
2691 - $display_count = isset($options['brave_image_count']) ? intval($options['brave_image_count']) : 4;
2692 - $display_count = min($display_count, count($body['results'])); // Make sure we don't exceed available images
2693 -
2694 - // Use only the requested number of images
2695 - for ($i = 0; $i < $display_count; $i++) {
2696 - $image = $body['results'][$i];
2697 - $image_url = isset($image['url']) ? esc_url($image['url']) : '';
2698 - $thumbnail_url = isset($image['thumbnail']['src']) ? esc_url($image['thumbnail']['src']) : '';
2699 - $title = isset($image['title']) ? esc_html($image['title']) : esc_html__('Image', 'mxchat');
2700 -
2701 - if ($image_url && $thumbnail_url) {
2702 - $html_output .= '<div class="mxchat-image-item">';
2703 - $html_output .= '<strong class="mxchat-image-title">' . $title . '</strong>';
2704 - $html_output .= '<a href="' . $image_url . '" target="_blank" rel="noopener noreferrer" class="mxchat-image-link">';
2705 - $html_output .= '<img src="' . $thumbnail_url . '" alt="' . $title . '" class="mxchat-image-thumbnail">';
2706 - $html_output .= '</a></div>';
2707 - }
2708 - }
2709 -
2710 - $html_output .= '</div>';
2711 -
2712 - // Create response text
2713 - $response_text = sprintf(__("Here are some images of %s:", 'mxchat'), $refined_search_query);
2714 -
2715 - // Save both response text and HTML to chat history
2716 - $this->mxchat_save_chat_message($session_id, 'bot', $response_text);
2717 - $this->mxchat_save_chat_message($session_id, 'bot', $html_output);
2718 -
2719 - // Return the combined response
2720 - return array(
2721 - 'text' => $response_text,
2722 - 'html' => $html_output,
2723 - );
2724 - } else {
2725 - $response_text = __("I'm sorry, I couldn't retrieve any images based on your request.", 'mxchat');
2726 -
2727 - // Save the error message to chat history
2728 - $this->mxchat_save_chat_message($session_id, 'bot', $response_text);
2729 -
2730 - return array(
2731 - 'text' => $response_text,
2732 - 'html' => "",
2733 - );
2734 - }
2735 -}
2736 -
2737 -/**
2738 - * Interpret the search query using the user's selected AI model
2739 - *
2740 - * @param string $user_query The original query from the user
2741 - * @return string The refined search query
2742 - */
2743 -public function mxchat_interpret_search_query($user_query) {
2744 - $system_prompt = esc_html__("Interpret the user's request to provide only the essential keywords or phrases for image searching. Remove conversational language, politeness, or extra context. Return a concise search query that doesn't lose any of the original meaning.", 'mxchat');
2745 -
2746 - // Get options and determine the selected model
2747 - $options = $this->options ?? get_option('mxchat_options');
2748 - $selected_model = isset($options['model']) ? $options['model'] : 'gpt-5.1-chat-latest';
2749 -
2750 - // Extract model prefix to determine the provider
2751 - $model_parts = explode('-', $selected_model);
2752 - $provider = strtolower($model_parts[0]);
2753 -
2754 - // Determine which API key to use based on the provider
2755 - switch ($provider) {
2756 - case 'gemini':
2757 - $api_key = isset($options['gemini_api_key']) ? sanitize_text_field($options['gemini_api_key']) : '';
2758 - if (empty($api_key)) {
2759 - return sanitize_text_field($user_query); // Default to original query if API key missing
2760 - }
2761 - return $this->interpret_query_with_gemini($user_query, $system_prompt, $api_key, $selected_model);
2762 -
2763 - case 'claude':
2764 - $api_key = isset($options['claude_api_key']) ? sanitize_text_field($options['claude_api_key']) : '';
2765 - if (empty($api_key)) {
2766 - return sanitize_text_field($user_query);
2767 - }
2768 - return $this->interpret_query_with_claude($user_query, $system_prompt, $api_key, $selected_model);
2769 -
2770 - case 'grok':
2771 - $api_key = isset($options['xai_api_key']) ? sanitize_text_field($options['xai_api_key']) : '';
2772 - if (empty($api_key)) {
2773 - return sanitize_text_field($user_query);
2774 - }
2775 - return $this->interpret_query_with_xai($user_query, $system_prompt, $api_key, $selected_model);
2776 -
2777 - case 'deepseek':
2778 - $api_key = isset($options['deepseek_api_key']) ? sanitize_text_field($options['deepseek_api_key']) : '';
2779 - if (empty($api_key)) {
2780 - return sanitize_text_field($user_query);
2781 - }
2782 - return $this->interpret_query_with_deepseek($user_query, $system_prompt, $api_key, $selected_model);
2783 -
2784 - case 'gpt':
2785 - default:
2786 - // Default to OpenAI for custom models or unrecognized prefixes
2787 - $api_key = isset($options['api_key']) ? sanitize_text_field($options['api_key']) : '';
2788 - if (empty($api_key)) {
2789 - return sanitize_text_field($user_query);
2790 - }
2791 - return $this->interpret_query_with_openai($user_query, $system_prompt, $api_key, $selected_model);
2792 - }
2793 -}
2794 -
2795 -/**
2796 - * Interpret query using OpenAI models
2797 - */
2798 -private function interpret_query_with_openai($user_query, $system_prompt, $api_key, $model = 'gpt-5.1-chat-latest') {
2799 - $url = 'https://api.openai.com/v1/chat/completions';
2800 - $args = [
2801 - 'headers' => [
2802 - 'Authorization' => 'Bearer ' . $api_key,
2803 - 'Content-Type' => 'application/json',
2804 - ],
2805 - 'body' => wp_json_encode([
2806 - 'model' => $model,
2807 - 'messages' => [
2808 - ['role' => 'system', 'content' => $system_prompt],
2809 - ['role' => 'user', 'content' => sanitize_text_field($user_query)],
2810 - ],
2811 - 'temperature' => 0.2,
2812 - 'max_tokens' => 20,
2813 - ]),
2814 - 'method' => 'POST',
2815 - 'timeout' => 15,
2816 - ];
2817 -
2818 - $response = wp_remote_post($url, $args);
2819 - if (is_wp_error($response)) {
2820 - return sanitize_text_field($user_query);
2821 - }
2822 -
2823 - $body = json_decode(wp_remote_retrieve_body($response), true);
2824 - return isset($body['choices'][0]['message']['content'])
2825 - ? sanitize_text_field(trim($body['choices'][0]['message']['content']))
2826 - : sanitize_text_field($user_query);
2827 -}
2828 -
2829 -/**
2830 - * Interpret query using Claude models
2831 - */
2832 -private function interpret_query_with_claude($user_query, $system_prompt, $api_key, $model) {
2833 - $url = 'https://api.anthropic.com/v1/messages';
2834 -
2835 - $args = [
2836 - 'headers' => [
2837 - 'Content-Type' => 'application/json',
2838 - 'x-api-key' => $api_key,
2839 - 'anthropic-version' => '2023-06-01',
2840 - ],
2841 - 'body' => wp_json_encode([
2842 - 'model' => $model,
2843 - 'system' => $system_prompt,
2844 - 'messages' => [
2845 - ['role' => 'user', 'content' => sanitize_text_field($user_query)]
2846 - ],
2847 - 'max_tokens' => 20,
2848 - 'temperature' => 0.2,
2849 - ]),
2850 - 'method' => 'POST',
2851 - 'timeout' => 15,
2852 - ];
2853 -
2854 - $response = wp_remote_post($url, $args);
2855 - if (is_wp_error($response)) {
2856 - return sanitize_text_field($user_query);
2857 - }
2858 -
2859 - $body = json_decode(wp_remote_retrieve_body($response), true);
2860 - if (!empty($body['content'][0]['text'])) {
2861 - return sanitize_text_field(trim($body['content'][0]['text']));
2862 - }
2863 -
2864 - return sanitize_text_field($user_query);
2865 -}
2866 -
2867 -/**
2868 - * Interpret query using Gemini models
2869 - */
2870 -private function interpret_query_with_gemini($user_query, $system_prompt, $api_key, $model) {
2871 - // Use v1beta for preview models, v1 for stable models
2872 - $api_version = (strpos($model, 'preview') !== false || strpos($model, 'exp') !== false) ? 'v1beta' : 'v1';
2873 -
2874 - $url = "https://generativelanguage.googleapis.com/{$api_version}/models/{$model}:generateContent?key=" . urlencode($api_key);
2875 -
2876 - $args = [
2877 - 'headers' => [
2878 - 'Content-Type' => 'application/json',
2879 - ],
2880 - 'body' => wp_json_encode([
2881 - 'contents' => [
2882 - [
2883 - 'role' => 'user',
2884 - 'parts' => [
2885 - ['text' => $system_prompt . "\n\nQuery: " . sanitize_text_field($user_query)]
2886 - ]
2887 - ]
2888 - ],
2889 - 'generationConfig' => [
2890 - 'temperature' => 0.2,
2891 - 'maxOutputTokens' => 20,
2892 - ],
2893 - ]),
2894 - 'method' => 'POST',
2895 - 'timeout' => 15,
2896 - ];
2897 -
2898 - $response = wp_remote_post($url, $args);
2899 - if (is_wp_error($response)) {
2900 - return sanitize_text_field($user_query);
2901 - }
2902 -
2903 - $body = json_decode(wp_remote_retrieve_body($response), true);
2904 - if (!empty($body['candidates'][0]['content']['parts'][0]['text'])) {
2905 - return sanitize_text_field(trim($body['candidates'][0]['content']['parts'][0]['text']));
2906 - }
2907 -
2908 - return sanitize_text_field($user_query);
2909 -}
2910 -
2911 -/**
2912 - * Interpret query using X.AI (Grok) models
2913 - */
2914 -private function interpret_query_with_xai($user_query, $system_prompt, $api_key, $model) {
2915 - $url = 'https://api.xai.com/v1/chat/completions';
2916 -
2917 - $args = [
2918 - 'headers' => [
2919 - 'Content-Type' => 'application/json',
2920 - 'Authorization' => 'Bearer ' . $api_key,
2921 - ],
2922 - 'body' => wp_json_encode([
2923 - 'model' => $model,
2924 - 'messages' => [
2925 - ['role' => 'system', 'content' => $system_prompt],
2926 - ['role' => 'user', 'content' => sanitize_text_field($user_query)],
2927 - ],
2928 - 'temperature' => 0.2,
2929 - 'max_tokens' => 20,
2930 - ]),
2931 - 'method' => 'POST',
2932 - 'timeout' => 15,
2933 - ];
2934 -
2935 - $response = wp_remote_post($url, $args);
2936 - if (is_wp_error($response)) {
2937 - return sanitize_text_field($user_query);
2938 - }
2939 -
2940 - $body = json_decode(wp_remote_retrieve_body($response), true);
2941 - if (isset($body['choices'][0]['message']['content'])) {
2942 - return sanitize_text_field(trim($body['choices'][0]['message']['content']));
2943 - }
2944 -
2945 - return sanitize_text_field($user_query);
2946 -}
2947 -
2948 -/**
2949 - * Interpret query using DeepSeek models
2950 - */
2951 -private function interpret_query_with_deepseek($user_query, $system_prompt, $api_key, $model) {
2952 - $url = 'https://api.deepseek.com/v1/chat/completions';
2953 -
2954 - $args = [
2955 - 'headers' => [
2956 - 'Content-Type' => 'application/json',
2957 - 'Authorization' => 'Bearer ' . $api_key,
2958 - ],
2959 - 'body' => wp_json_encode([
2960 - 'model' => $model,
2961 - 'messages' => [
2962 - ['role' => 'system', 'content' => $system_prompt],
2963 - ['role' => 'user', 'content' => sanitize_text_field($user_query)],
2964 - ],
2965 - 'temperature' => 0.2,
2966 - 'max_tokens' => 20,
2967 - ]),
2968 - 'method' => 'POST',
2969 - 'timeout' => 15,
2970 - ];
2971 -
2972 - $response = wp_remote_post($url, $args);
2973 - if (is_wp_error($response)) {
2974 - return sanitize_text_field($user_query);
2975 - }
2976 -
2977 - $body = json_decode(wp_remote_retrieve_body($response), true);
2978 - if (isset($body['choices'][0]['message']['content'])) {
2979 - return sanitize_text_field(trim($body['choices'][0]['message']['content']));
2980 - }
2981 -
2982 - return sanitize_text_field($user_query);
2983 -}
2984 -
2985 -//very good
2986 -private function add_email_to_loops($email) {
2987 - // Sanitize the email
2988 - $email = sanitize_email($email);
2989 -
2990 - // Retrieve and sanitize options
2991 - $api_key = isset($this->options['loops_api_key']) ? sanitize_text_field($this->options['loops_api_key']) : '';
2992 - $mailing_list_id = isset($this->options['loops_mailing_list']) ? sanitize_text_field($this->options['loops_mailing_list']) : '';
2993 -
2994 - // Check for missing API key or mailing list ID
2995 - if (empty($api_key) || empty($mailing_list_id)) {
2996 - //error_log(esc_html__('Loops API key or mailing list ID is missing.', 'mxchat'));
2997 - return;
2998 - }
2999 -
3000 - $data = array(
3001 - 'email' => $email,
3002 - 'subscribed' => true,
3003 - 'source' => __('MxChat AI Chatbot', 'mxchat'),
3004 - 'mailingLists' => array($mailing_list_id => true),
3005 - );
3006 -
3007 - $url = 'https://app.loops.so/api/v1/contacts/create';
3008 - $args = array(
3009 - 'body' => wp_json_encode($data),
3010 - 'headers' => array(
3011 - 'Authorization' => 'Bearer ' . $api_key,
3012 - 'Content-Type' => 'application/json',
3013 - ),
3014 - 'method' => 'POST',
3015 - 'timeout' => 45,
3016 - );
3017 -
3018 - $response = wp_remote_post($url, $args);
3019 -
3020 - // Handle errors in the API request
3021 - if (is_wp_error($response)) {
3022 - //error_log(esc_html__('Error adding email to Loops: ', 'mxchat') . $response->get_error_message());
3023 - return;
3024 - }
3025 -
3026 - // Check for non-200 HTTP responses
3027 - $response_code = wp_remote_retrieve_response_code($response);
3028 - if ($response_code != 200) {
3029 - $response_body = wp_remote_retrieve_body($response);
3030 - //error_log(esc_html__('Loops API responded with code ', 'mxchat') . $response_code . ': ' . $response_body);
3031 - }
3032 -}
3033 -
3034 -public function mxchat_handle_pdf_discussion($message, $user_id, $session_id) {
3035 - // Get the maximum number of pages allowed from admin settings
3036 - $max_pages = isset($this->options['pdf_max_pages']) ? intval($this->options['pdf_max_pages']) : 69;
3037 -
3038 - // Retrieve options for dynamic texts
3039 - $trigger_text = $this->options['pdf_intent_trigger_text'] ?? __("Please provide the URL to the PDF you'd like to discuss.", 'mxchat');
3040 - $success_text = $this->options['pdf_intent_success_text'] ?? __("I've processed the PDF. What questions do you have about it?", 'mxchat');
3041 - $error_text = $this->options['pdf_intent_error_text'] ?? __("Sorry, I couldn't process the PDF. Please ensure it's a valid file.", 'mxchat');
3042 -
3043 - // Check for explicit request for new PDF
3044 - $new_pdf_requested = stripos($message, 'new') !== false ||
3045 - stripos($message, 'another') !== false ||
3046 - stripos($message, 'different') !== false;
3047 -
3048 - // If user mentions adding/reading a PDF, set waiting flag
3049 - if (stripos($message, 'pdf') !== false ||
3050 - stripos($message, 'document') !== false ||
3051 - stripos($message, 'read') !== false) {
3052 - set_transient('mxchat_waiting_for_pdf_url_' . $session_id, true, HOUR_IN_SECONDS);
3053 - $this->fallbackResponse['text'] = $trigger_text;
3054 - return;
3055 - }
3056 -
3057 - // If we're waiting for a URL or user requested new PDF
3058 - if ($new_pdf_requested || get_transient('mxchat_waiting_for_pdf_url_' . $session_id)) {
3059 - if (preg_match('/https?:\/\/[^\s"]+/i', $message, $matches)) {
3060 - // Process URL... (rest of your existing URL processing code)
3061 - } else {
3062 - $this->fallbackResponse['text'] = $trigger_text;
3063 - }
3064 - return;
3065 - }
3066 -
3067 - // Default to proceeding with conversation if no specific PDF action is needed
3068 - $this->fallbackResponse['text'] = '';
3069 -}
3070 -
3071 -
3072 -/**
3073 - * Enhanced fetch_and_split_pdf_pages with SSRF protection
3074 - */
3075 -private function fetch_and_split_pdf_pages($pdf_source, $max_pages) {
3076 - // CLEAR DEBUG LOGGING
3077 - //error_log("=== MXCHAT PDF PROCESSING START ===");
3078 - //error_log("PDF Source: " . $pdf_source);
3079 - //error_log("Max Pages: " . $max_pages);
3080 - //error_log("Session ID: " . ($this->session_id ?? 'not set'));
3081 -
3082 - // Check if Advanced Claude Toolbar is available and enabled
3083 - $claude_available = function_exists('mxchatACT_is_advanced_claude_enabled');
3084 - $claude_enabled = $claude_available ? mxchatACT_is_advanced_claude_enabled() : false;
3085 -
3086 - //error_log("Claude Function Available: " . ($claude_available ? 'YES' : 'NO'));
3087 - //error_log("Claude Enabled: " . ($claude_enabled ? 'YES' : 'NO'));
3088 -
3089 - if ($claude_available && $claude_enabled) {
3090 - //error_log("🚀 ATTEMPTING CLAUDE PROCESSING...");
3091 -
3092 - // Attempt Claude processing first
3093 - $claude_result = apply_filters('mxchat_process_pdf_advanced', false, $pdf_source, $max_pages, $this->session_id);
3094 -
3095 - if ($claude_result !== false && is_array($claude_result) && !empty($claude_result)) {
3096 - //error_log("✅ CLAUDE PROCESSING SUCCESSFUL!");
3097 - //error_log("Claude returned " . count($claude_result) . " processed pages");
3098 -
3099 - // Log first page details for verification
3100 - if (isset($claude_result[0])) {
3101 - $first_page = $claude_result[0];
3102 - //error_log("First page enhanced: " . (isset($first_page['enhanced']) && $first_page['enhanced'] ? 'YES' : 'NO'));
3103 - //error_log("Processing method: " . ($first_page['processing_method'] ?? 'not set'));
3104 - //error_log("First page text preview: " . substr($first_page['text'] ?? '', 0, 100) . "...");
3105 - }
3106 -
3107 - //error_log("=== MXCHAT PDF PROCESSING END (CLAUDE) ===");
3108 - return $claude_result;
3109 - } else {
3110 - //error_log("❌ CLAUDE PROCESSING FAILED or returned invalid result");
3111 - //error_log("Claude result type: " . gettype($claude_result));
3112 - if (is_array($claude_result)) {
3113 - //error_log("Claude result count: " . count($claude_result));
3114 - }
3115 - }
3116 - }
3117 -
3118 - // Fallback to basic processing
3119 - //error_log("🔄 FALLING BACK TO BASIC PDF PROCESSING...");
3120 -
3121 - $upload_dir = wp_upload_dir();
3122 - $temp_file = null;
3123 -
3124 - try {
3125 - // Your existing basic processing code here...
3126 - // (I'll include the key parts with debug logging)
3127 -
3128 - if (filter_var($pdf_source, FILTER_VALIDATE_URL)) {
3129 - //error_log("Downloading PDF from URL...");
3130 -
3131 - // SECURITY FIX: Validate URL before processing
3132 - if (!$this->mxchat_is_safe_pdf_url($pdf_source)) {
3133 - //error_log("❌ SECURITY: Blocked unsafe PDF URL");
3134 - return false;
3135 - }
3136 -
3137 - $temp_file = wp_tempnam($pdf_source);
3138 -
3139 - // SECURITY FIX: Changed from wp_remote_get to wp_safe_remote_get
3140 - $response = wp_safe_remote_get($pdf_source, [
3141 - 'timeout' => 60,
3142 - 'headers' => ['User-Agent' => 'MxChat PDF Processor']
3143 - ]);
3144 -
3145 - if (is_wp_error($response) || wp_remote_retrieve_response_code($response) !== 200) {
3146 - $error_message = is_wp_error($response) ? $response->get_error_message() : 'HTTP ' . wp_remote_retrieve_response_code($response);
3147 - //error_log("❌ BASIC PROCESSING: Failed to download PDF: " . $error_message);
3148 - return false;
3149 - }
3150 -
3151 - global $wp_filesystem;
3152 - if (empty($wp_filesystem)) {
3153 - require_once ABSPATH . 'wp-admin/includes/file.php';
3154 - WP_Filesystem();
3155 - }
3156 - $wp_filesystem->put_contents($temp_file, wp_remote_retrieve_body($response), FS_CHMOD_FILE);
3157 - //error_log("✅ PDF downloaded successfully");
3158 - } else {
3159 - $temp_file = $pdf_source;
3160 - //error_log("Using local PDF file: " . $temp_file);
3161 - }
3162 -
3163 - // Parse PDF
3164 - //error_log("Parsing PDF with basic parser...");
3165 - mxchat_load_pdf_parser();
3166 - $parser = new \Smalot\PdfParser\Parser();
3167 - $pdf = $parser->parseFile($temp_file);
3168 - $pages = $pdf->getPages();
3169 -
3170 - //error_log("PDF contains " . count($pages) . " pages");
3171 -
3172 - if (count($pages) > $max_pages) {
3173 - //error_log("❌ BASIC PROCESSING: Too many pages (" . count($pages) . " > " . $max_pages . ")");
3174 - if (filter_var($pdf_source, FILTER_VALIDATE_URL) && $temp_file) {
3175 - unlink($temp_file);
3176 - }
3177 - return 'too_many_pages';
3178 - }
3179 -
3180 - $embeddings = [];
3181 - $processed_pages = 0;
3182 -
3183 - foreach ($pages as $page_number => $page) {
3184 - $text = $page->getText();
3185 -
3186 - if (empty(trim($text))) {
3187 - //error_log("Skipping empty page: " . ($page_number + 1));
3188 - continue;
3189 - }
3190 -
3191 - $text = $this->mxchat_clean_text($text);
3192 -
3193 - $embedding = $this->mxchat_generate_embedding(
3194 - __("Page ", 'mxchat') . ($page_number + 1) . ": " . $text,
3195 - $this->options['api_key']
3196 - );
3197 -
3198 - if ($embedding) {
3199 - $embeddings[] = [
3200 - 'page_number' => $page_number + 1,
3201 - 'embedding' => $embedding,
3202 - 'text' => $text,
3203 - 'enhanced' => false, // CLEARLY MARK AS BASIC
3204 - 'processing_method' => 'basic_pdf_parser'
3205 - ];
3206 - $processed_pages++;
3207 - }
3208 - }
3209 -
3210 - //error_log("✅ BASIC PROCESSING COMPLETE: " . $processed_pages . " pages processed");
3211 -
3212 - // Cleanup
3213 - if (filter_var($pdf_source, FILTER_VALIDATE_URL) && $temp_file && file_exists($temp_file)) {
3214 - unlink($temp_file);
3215 - }
3216 -
3217 - //error_log("=== MXCHAT PDF PROCESSING END (BASIC) ===");
3218 - return $embeddings;
3219 -
3220 - } catch (\Exception $e) {
3221 - //error_log("❌ BASIC PROCESSING ERROR: " . $e->getMessage());
3222 - if (filter_var($pdf_source, FILTER_VALIDATE_URL) && $temp_file && file_exists($temp_file)) {
3223 - unlink($temp_file);
3224 - }
3225 - //error_log("=== MXCHAT PDF PROCESSING END (ERROR) ===");
3226 - return false;
3227 - }
3228 -}
3229 -
3230 -
3231 -/**
3232 - * Validate PDF URL for security
3233 - * Prevents SSRF attacks by blocking dangerous URLs
3234 - */
3235 -
3236 -private function mxchat_is_safe_pdf_url($url) {
3237 - // Use WordPress core function for comprehensive validation
3238 - // This blocks localhost, private IPs, and reserved IP ranges
3239 - $validated_url = wp_http_validate_url($url);
3240 -
3241 - if ($validated_url === false) {
3242 - return false;
3243 - }
3244 -
3245 - // Additional check: only allow HTTP/HTTPS schemes
3246 - $parsed = parse_url($url);
3247 - if (!isset($parsed['scheme']) || !in_array($parsed['scheme'], ['http', 'https'], true)) {
3248 - return false;
3249 - }
3250 -
3251 - return true;
3252 -}
3253 -
3254 -
3255 -private function mxchat_clean_text($text) {
3256 - // Remove excessive whitespace
3257 - $text = preg_replace('/\s+/', ' ', $text);
3258 -
3259 - // Remove control characters except newlines and tabs
3260 - $text = preg_replace('/[\x00-\x08\x0B\x0C\x0E-\x1F\x7F]/', '', $text);
3261 -
3262 - // Normalize line endings
3263 - $text = str_replace(["\r\n", "\r"], "\n", $text);
3264 -
3265 - // Trim whitespace
3266 - $text = trim($text);
3267 -
3268 - return $text;
3269 -}
3270 -
3271 -private function find_relevant_pdf_pages($query_embedding, $embeddings) {
3272 - //error_log(esc_html__("find_relevant_pdf_pages called.", 'mxchat'));
3273 -
3274 - $most_relevant = null;
3275 - $highest_similarity = -INF;
3276 -
3277 - foreach ($embeddings as $page_data) {
3278 - $similarity = $this->mxchat_calculate_cosine_similarity($query_embedding, $page_data['embedding']);
3279 -
3280 - if ($similarity > $highest_similarity) {
3281 - $highest_similarity = $similarity;
3282 - $most_relevant = $page_data['page_number'];
3283 - }
3284 - }
3285 -
3286 - if (!is_null($most_relevant)) {
3287 - $page_numbers = range(max(1, $most_relevant - 1), min(count($embeddings), $most_relevant + 1));
3288 - return array_filter($embeddings, function ($page) use ($page_numbers) {
3289 - return in_array($page['page_number'], $page_numbers);
3290 - });
3291 - }
3292 -
3293 - return [];
3294 -}
3295 -
3296 -
3297 -public function handle_pdf_upload() {
3298 - check_ajax_referer('mxchat_chat_nonce', 'nonce');
3299 -
3300 - if (!isset($_FILES['pdf_file']) || !isset($_POST['session_id'])) {
3301 - wp_send_json_error(esc_html__('Missing required parameters.', 'mxchat'));
3302 - return;
3303 - }
3304 -
3305 - // SECURITY FIX: Check if PDF uploads are enabled in settings
3306 - $options = get_option('mxchat_options', array());
3307 - $show_pdf_button = isset($options['show_pdf_upload_button']) ? $options['show_pdf_upload_button'] : 'on';
3308 -
3309 - if ($show_pdf_button !== 'on') {
3310 - wp_send_json_error(esc_html__('PDF uploads are currently disabled.', 'mxchat'));
3311 - return;
3312 - }
3313 -
3314 - $file = $_FILES['pdf_file'];
3315 - $session_id = sanitize_text_field($_POST['session_id']);
3316 - $original_filename = sanitize_text_field($file['name']);
3317 -
3318 - // Update session owner if it changed (e.g. IP changed due to network switch)
3319 - $current_user_identifier = MxChat_User::mxchat_get_user_identifier();
3320 - $session_owner = get_option("mxchat_session_owner_{$session_id}");
3321 -
3322 - if (!$session_owner || $session_owner !== $current_user_identifier) {
3323 - update_option("mxchat_session_owner_{$session_id}", $current_user_identifier, 'no');
3324 - }
3325 -
3326 - $file_type = wp_check_filetype($file['name'], ['pdf' => 'application/pdf']);
3327 - if ($file_type['type'] !== 'application/pdf') {
3328 - wp_send_json_error(esc_html__('Invalid file type. Only PDF files are allowed.', 'mxchat'));
3329 - return;
3330 - }
3331 -
3332 - $upload_dir = wp_upload_dir();
3333 -
3334 - // SECURITY FIX: Generate random filename without exposing session_id
3335 - $random_string = wp_generate_password(20, false, false); // 20 char alphanumeric string
3336 - $pdf_filename = 'mxchat_' . $random_string . '_' . time() . '.pdf';
3337 - $pdf_path = $upload_dir['path'] . '/' . $pdf_filename;
3338 -
3339 - if (!move_uploaded_file($file['tmp_name'], $pdf_path)) {
3340 - wp_send_json_error(esc_html__('Failed to upload file.', 'mxchat'));
3341 - return;
3342 - }
3343 -
3344 - $this->clear_pdf_transients($session_id);
3345 -
3346 - $max_pages = isset($this->options['pdf_max_pages']) ? intval($this->options['pdf_max_pages']) : 69;
3347 - $embeddings = $this->fetch_and_split_pdf_pages($pdf_path, $max_pages);
3348 -
3349 - if ($embeddings === 'too_many_pages') {
3350 - unlink($pdf_path);
3351 - $error_message = sprintf(
3352 - $this->options['pdf_intent_error_text'] ??
3353 - esc_html__("The provided PDF exceeds the maximum allowed limit of %d pages. Please provide a smaller document.", 'mxchat'),
3354 - $max_pages
3355 - );
3356 - wp_send_json_error($error_message);
3357 - return;
3358 - }
3359 -
3360 - if ($embeddings === false || empty($embeddings)) {
3361 - unlink($pdf_path);
3362 - $error_message = $this->options['pdf_intent_error_text'] ??
3363 - esc_html__('The uploaded PDF appears to be empty or contains unsupported content.', 'mxchat');
3364 - wp_send_json_error($error_message);
3365 - return;
3366 - }
3367 -
3368 - if (!empty($embeddings)) {
3369 - // Store the mapping between session and the random filename
3370 - set_transient('mxchat_pdf_url_' . $session_id, $pdf_path, HOUR_IN_SECONDS);
3371 - set_transient('mxchat_pdf_filename_' . $session_id, $original_filename, HOUR_IN_SECONDS);
3372 - set_transient('mxchat_pdf_embeddings_' . $session_id, $embeddings, HOUR_IN_SECONDS);
3373 - set_transient('mxchat_include_pdf_in_context_' . $session_id, true, HOUR_IN_SECONDS);
3374 -
3375 - $success_message = $this->options['pdf_intent_success_text'] ??
3376 - esc_html__("I've processed the PDF. What questions do you have about it?", 'mxchat');
3377 -
3378 - wp_send_json_success([
3379 - 'message' => $success_message,
3380 - 'filename' => $original_filename
3381 - ]);
3382 - return;
3383 - }
3384 -
3385 - unlink($pdf_path);
3386 - $error_message = $this->options['pdf_intent_error_text'] ??
3387 - esc_html__('Sorry, I couldn\'t process the PDF. Please ensure it\'s a valid file.', 'mxchat');
3388 - wp_send_json_error($error_message);
3389 - return;
3390 -}
3391 -public function handle_pdf_remove() {
3392 - check_ajax_referer('mxchat_chat_nonce', 'nonce');
3393 -
3394 - if (empty($_POST['session_id'])) {
3395 - wp_send_json_error(esc_html__('Session ID missing.', 'mxchat'));
3396 - wp_die();
3397 - }
3398 -
3399 - $session_id = sanitize_text_field($_POST['session_id']);
3400 - $pdf_path = get_transient('mxchat_pdf_url_' . $session_id);
3401 -
3402 - if ($pdf_path && file_exists($pdf_path)) {
3403 - unlink($pdf_path);
3404 - }
3405 -
3406 - $this->clear_pdf_transients($session_id);
3407 -
3408 - wp_send_json_success([
3409 - 'message' => esc_html__('PDF removed successfully.', 'mxchat')
3410 - ]);
3411 - wp_die();
3412 -}
3413 -
3414 -
3415 -function mxchat_fetch_new_messages() {
3416 - $session_id = sanitize_text_field($_POST['session_id']);
3417 - $last_seen_id = sanitize_text_field($_POST['last_seen_id']);
3418 - $persistence_enabled = $_POST['persistence_enabled'] === 'true';
3419 - $initial_timestamp = isset($_POST['initial_timestamp']) ? intval($_POST['initial_timestamp']) : 0;
3420 -
3421 - if (empty($session_id)) {
3422 - //error_log(esc_html__('Fetch new messages error: Session ID missing.', 'mxchat'));
3423 - wp_send_json_error(['message' => esc_html__('Session ID missing.', 'mxchat')]);
3424 - wp_die();
3425 - }
3426 -
3427 - $history = get_option("mxchat_history_{$session_id}", []);
3428 -
3429 - //error_log("MxChat WhatsApp DEBUG: Fetch new messages for session {$session_id}");
3430 - //error_log("MxChat WhatsApp DEBUG: last_seen_id = " . var_export($last_seen_id, true));
3431 - //error_log("MxChat WhatsApp DEBUG: History count = " . count($history));
3432 - //error_log("MxChat WhatsApp DEBUG: Full history = " . print_r($history, true));
3433 -
3434 - $new_messages = array_filter($history, function ($message) use ($last_seen_id, $persistence_enabled, $initial_timestamp) {
3435 - //error_log("MxChat WhatsApp DEBUG: Checking message - ID: " . ($message['id'] ?? 'NO_ID') . ", Role: " . ($message['role'] ?? 'NO_ROLE'));
3436 -
3437 - // If persistence is enabled, show all new messages
3438 - if ($persistence_enabled) {
3439 - $has_id = !empty($message['id']);
3440 - $is_agent = $message['role'] === 'agent';
3441 -
3442 - // If last_seen_id is empty, 'NaN', or invalid, show all agent messages
3443 - if (empty($last_seen_id) || $last_seen_id === 'NaN' || $last_seen_id === 'undefined') {
3444 - $is_newer = true;
3445 - } else {
3446 - $is_newer = strcmp($message['id'] ?? '', $last_seen_id) > 0;
3447 - }
3448 -
3449 - //error_log("MxChat WhatsApp DEBUG: has_id={$has_id}, is_newer={$is_newer}, is_agent={$is_agent}");
3450 -
3451 - return $has_id && $is_newer && $is_agent;
3452 - }
3453 -
3454 - // If persistence is disabled, only show messages after initial timestamp
3455 - return !empty($message['id']) &&
3456 - $message['role'] === 'agent' &&
3457 - $message['timestamp'] > $initial_timestamp;
3458 - });
3459 -
3460 - //error_log("MxChat WhatsApp DEBUG: Filtered messages count = " . count($new_messages));
3461 -
3462 - // Include current chat mode so frontend can detect agent→AI transitions
3463 - $chat_mode = get_option("mxchat_mode_{$session_id}", 'ai');
3464 -
3465 - wp_send_json_success([
3466 - 'new_messages' => array_values($new_messages),
3467 - 'chat_mode' => $chat_mode
3468 - ]);
3469 - wp_die();
3470 -}
3471 -public function mxchat_live_agent_handover($message, $user_id, $session_id) {
3472 - // First check if live agents are available
3473 - $live_agent_available = $this->options['live_agent_status'] ?? 'off';
3474 - if ($live_agent_available !== 'on') {
3475 - $away_message = $this->options['live_agent_away_message'] ?? 'Sorry, live agents are currently unavailable. I can continue helping you as an AI assistant.';
3476 - $this->fallbackResponse = [
3477 - 'text' => $away_message,
3478 - 'html' => '',
3479 - 'images' => [],
3480 - 'chat_mode' => 'ai'
3481 - ];
3482 - wp_send_json([
3483 - 'text' => $away_message,
3484 - 'html' => '',
3485 - 'chat_mode' => 'ai',
3486 - 'session_id' => $session_id
3487 - ]);
3488 - wp_die();
3489 - }
3490 -
3491 - $slack_bot_token = $this->options['live_agent_bot_token'] ?? '';
3492 -
3493 - if (empty($slack_bot_token)) {
3494 - return false;
3495 - }
3496 -
3497 - // Check if channel already exists for this session
3498 - $channel_id = get_option("mxchat_channel_{$session_id}", '');
3499 -
3500 - if (empty($channel_id)) {
3501 - // Create new channel with session ID as name
3502 - $channel_name = $this->generate_channel_name($session_id);
3503 -
3504 - //error_log("Attempting to create channel: $channel_name");
3505 -
3506 - $response = wp_remote_post('https://slack.com/api/conversations.create', [
3507 - 'headers' => [
3508 - 'Content-Type' => 'application/json',
3509 - 'Authorization' => 'Bearer ' . $slack_bot_token
3510 - ],
3511 - 'body' => json_encode([
3512 - 'name' => $channel_name,
3513 - 'is_private' => false // Public channel - anyone in workspace can join
3514 - ])
3515 - ]);
3516 -
3517 - if (!is_wp_error($response)) {
3518 - $response_body = wp_remote_retrieve_body($response);
3519 - $response_data = json_decode($response_body, true);
3520 -
3521 - //error_log("Channel creation response: " . $response_body);
3522 -
3523 - if (isset($response_data['ok']) && $response_data['ok']) {
3524 - $channel_id = $response_data['channel']['id'];
3525 - $actual_channel_name = $response_data['channel']['name'] ?? 'unknown';
3526 - //error_log("Channel created successfully: ID=$channel_id, Name=$actual_channel_name");
3527 - update_option("mxchat_channel_{$session_id}", $channel_id);
3528 -
3529 - // Auto-invite agents to the channel
3530 - $agent_user_ids = $this->options['live_agent_user_ids'] ?? '';
3531 -
3532 - if (!empty($agent_user_ids)) {
3533 - // Parse user IDs (one per line)
3534 - $user_ids = array_filter(array_map('trim', explode("\n", $agent_user_ids)));
3535 -
3536 - foreach ($user_ids as $user_id_to_invite) {
3537 - //error_log("Inviting user to channel: $user_id_to_invite");
3538 -
3539 - $invite_response = wp_remote_post('https://slack.com/api/conversations.invite', [
3540 - 'headers' => [
3541 - 'Content-Type' => 'application/json',
3542 - 'Authorization' => 'Bearer ' . $slack_bot_token
3543 - ],
3544 - 'body' => json_encode([
3545 - 'channel' => $channel_id,
3546 - 'users' => $user_id_to_invite
3547 - ])
3548 - ]);
3549 -
3550 - if (!is_wp_error($invite_response)) {
3551 - $invite_body = wp_remote_retrieve_body($invite_response);
3552 - $invite_data = json_decode($invite_body, true);
3553 - //error_log("Invite response for $user_id_to_invite: " . $invite_body);
3554 -
3555 - if (isset($invite_data['ok']) && $invite_data['ok']) {
3556 - //error_log("Successfully invited user $user_id_to_invite to channel");
3557 - } else {
3558 - //error_log("Failed to invite user $user_id_to_invite: " . ($invite_data['error'] ?? 'Unknown error'));
3559 - }
3560 - } else {
3561 - //error_log("WP Error inviting user $user_id_to_invite: " . $invite_response->get_error_message());
3562 - }
3563 - }
3564 - } else {
3565 - //error_log("No agent user IDs configured for auto-invite");
3566 - }
3567 - } else {
3568 - //error_log("Channel creation failed: " . ($response_data['error'] ?? 'Unknown error'));
3569 - }
3570 - } else {
3571 - //error_log("WP Error creating channel: " . $response->get_error_message());
3572 - }
3573 -
3574 - if (empty($channel_id)) {
3575 - return false; // Failed to create channel
3576 - }
3577 - }
3578 -
3579 - // Get recent chat history
3580 - $history = get_option("mxchat_history_{$session_id}", []);
3581 - $recent_history = array_slice($history, -5);
3582 -
3583 - // Format conversation context
3584 - $conversation_context = "";
3585 - if (!empty($recent_history)) {
3586 - $conversation_context = "*Recent Conversation:*\n";
3587 - foreach ($recent_history as $hist_message) {
3588 - $role_display = $hist_message['role'] === 'user' ? 'User' : 'AI';
3589 - $conversation_context .= ">{$role_display}: {$hist_message['content']}\n";
3590 - }
3591 - $conversation_context .= "\n";
3592 - }
3593 -
3594 - update_option("mxchat_mode_{$session_id}", 'agent');
3595 -
3596 - // Send message to channel
3597 - $channel_message = "🔔 *New Live Agent Request*\n\n";
3598 - $channel_message .= "*Session ID:* `{$session_id}`\n";
3599 - $channel_message .= "*User ID:* `{$user_id}`\n\n";
3600 -
3601 - if (!empty($conversation_context)) {
3602 - $channel_message .= $conversation_context;
3603 - }
3604 -
3605 - $channel_message .= "*Current Message:*\n{$message}\n\n";
3606 - $channel_message .= "_Reply directly in this channel - all messages will go to the user_";
3607 -
3608 - wp_remote_post('https://slack.com/api/chat.postMessage', [
3609 - 'headers' => [
3610 - 'Content-Type' => 'application/json',
3611 - 'Authorization' => 'Bearer ' . $slack_bot_token
3612 - ],
3613 - 'body' => json_encode([
3614 - 'channel' => $channel_id,
3615 - 'text' => $channel_message,
3616 - 'mrkdwn' => true
3617 - ])
3618 - ]);
3619 -
3620 - $success_message = $this->options['live_agent_notification_message'] ?? 'Live agent has been notified.';
3621 - $this->mxchat_save_chat_message($session_id, 'bot', $success_message);
3622 -
3623 - $this->fallbackResponse = [
3624 - 'text' => $success_message,
3625 - 'html' => '',
3626 - 'images' => [],
3627 - 'chat_mode' => 'agent'
3628 - ];
3629 -
3630 - wp_send_json([
3631 - 'success' => true,
3632 - 'text' => $success_message,
3633 - 'html' => '',
3634 - 'chat_mode' => 'agent',
3635 - 'session_id' => $session_id,
3636 - 'fallbackResponse' => $this->fallbackResponse
3637 - ]);
3638 - wp_die();
3639 -}
3640 -
3641 -private function generate_channel_name($session_id) {
3642 - $email = null;
3643 - $name = null;
3644 -
3645 - // 1. First priority: Check if user is logged in and get their info
3646 - if (is_user_logged_in()) {
3647 - $current_user = wp_get_current_user();
3648 - if (!empty($current_user->user_email)) {
3649 - $email = $current_user->user_email;
3650 - //error_log("[DEBUG] Using logged-in user email for channel: {$email}");
3651 - }
3652 - if (!empty($current_user->display_name)) {
3653 - $name = $current_user->display_name;
3654 - //error_log("[DEBUG] Using logged-in user name for channel: {$name}");
3655 - }
3656 - }
3657 -
3658 - // 2. Second priority: Check for saved email/name from "require email to chat" option
3659 - if (empty($email)) {
3660 - $email_option_key = "mxchat_email_{$session_id}";
3661 - $saved_email = get_option($email_option_key);
3662 - if (!empty($saved_email)) {
3663 - $email = $saved_email;
3664 - //error_log("[DEBUG] Using saved email from session for channel: {$email}");
3665 - }
3666 - }
3667 -
3668 - if (empty($name)) {
3669 - $name_option_key = "mxchat_name_{$session_id}";
3670 - $saved_name = get_option($name_option_key);
3671 - if (!empty($saved_name)) {
3672 - $name = $saved_name;
3673 - //error_log("[DEBUG] Using saved name from session for channel: {$name}");
3674 - }
3675 - }
3676 -
3677 - // 3. Third priority: Check existing chat transcript for email/name
3678 - if (empty($email) || empty($name)) {
3679 - global $wpdb;
3680 - $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
3681 - $existing_data = $wpdb->get_row($wpdb->prepare(
3682 - "SELECT user_email, user_name FROM $table_name WHERE session_id = %s AND (user_email IS NOT NULL OR user_name IS NOT NULL) LIMIT 1",
3683 - $session_id
3684 - ));
3685 -
3686 - if ($existing_data) {
3687 - if (empty($email) && !empty($existing_data->user_email)) {
3688 - $email = $existing_data->user_email;
3689 - //error_log("[DEBUG] Using email from chat transcript for channel: {$email}");
3690 - }
3691 - if (empty($name) && !empty($existing_data->user_name)) {
3692 - $name = $existing_data->user_name;
3693 - //error_log("[DEBUG] Using name from chat transcript for channel: {$name}");
3694 - }
3695 - }
3696 - }
3697 -
3698 - // 4. Generate channel name based on priority: Name > Email > Session ID
3699 - $channel_name = '';
3700 -
3701 - if (!empty($name)) {
3702 - // Convert name to valid Slack channel name
3703 - $base_name = strtolower(trim($name));
3704 - // Replace spaces and invalid characters
3705 - $base_name = preg_replace('/[^a-z0-9\s]/', '', $base_name);
3706 - $base_name = preg_replace('/\s+/', '-', $base_name);
3707 - $base_name = trim($base_name, '-');
3708 -
3709 - // Get last 4 characters of session ID for uniqueness
3710 - $session_suffix = substr($session_id, -4);
3711 - $channel_name = 'chat-' . $base_name . '-' . strtolower($session_suffix);
3712 -
3713 - // Slack channel names have a 21 character limit
3714 - if (strlen($channel_name) > 21) {
3715 - // Calculate available space for name (21 - 'chat-' - '-' - session_suffix)
3716 - $available_space = 21 - 5 - 1 - strlen($session_suffix); // 'chat-' = 5, '-' = 1
3717 - $truncated_name = substr($base_name, 0, $available_space);
3718 - $truncated_name = rtrim($truncated_name, '-'); // Remove trailing hyphen
3719 - $channel_name = 'chat-' . $truncated_name . '-' . strtolower($session_suffix);
3720 - }
3721 -
3722 - //error_log("[DEBUG] Using name for channel: {$channel_name} (from name: {$name})");
3723 -
3724 - } elseif (!empty($email)) {
3725 - // Convert email to valid Slack channel name (your existing logic)
3726 - $channel_name = 'chat-' . strtolower(str_replace(['@', '.', '+', '_'], ['-at-', '-', '-plus-', '-'], $email));
3727 - // Remove any remaining invalid characters
3728 - $channel_name = preg_replace('/[^a-z0-9\-]/', '', $channel_name);
3729 - // Ensure it doesn't end with a hyphen
3730 - $channel_name = rtrim($channel_name, '-');
3731 - // Slack channel names have a 21 character limit, so truncate if needed
3732 - if (strlen($channel_name) > 21) {
3733 - $channel_name = substr($channel_name, 0, 21);
3734 - $channel_name = rtrim($channel_name, '-'); // Remove trailing hyphen if truncation created one
3735 - }
3736 -
3737 - //error_log("[DEBUG] Using email for channel: {$channel_name} (from email: {$email})");
3738 -
3739 - } else {
3740 - // Fallback to session ID if no name or email found
3741 - $channel_name = 'chat-' . strtolower(preg_replace('/[^a-zA-Z0-9]/', '', $session_id));
3742 - //error_log("[DEBUG] No name or email found, using session ID for channel: {$channel_name}");
3743 - }
3744 -
3745 - // Final validation - ensure channel name meets Slack requirements
3746 - if (strlen($channel_name) > 21) {
3747 - $channel_name = substr($channel_name, 0, 21);
3748 - $channel_name = rtrim($channel_name, '-');
3749 - }
3750 -
3751 - //error_log("[DEBUG] Generated channel name: {$channel_name}");
3752 - return $channel_name;
3753 -}
3754 -
3755 -/**
3756 - * Telegram Live Agent Handover
3757 - * Creates a forum topic in the Telegram group and notifies agents
3758 - */
3759 -public function mxchat_telegram_live_agent_handover($message, $user_id, $session_id) {
3760 - // Check if Telegram agents are available
3761 - $telegram_available = $this->options['telegram_status'] ?? 'off';
3762 - if ($telegram_available !== 'on') {
3763 - $away_message = $this->options['telegram_away_message'] ?? 'Sorry, live agents are currently unavailable. I can continue helping you as an AI assistant.';
3764 - $this->fallbackResponse = [
3765 - 'text' => $away_message,
3766 - 'html' => '',
3767 - 'images' => [],
3768 - 'chat_mode' => 'ai'
3769 - ];
3770 - wp_send_json([
3771 - 'text' => $away_message,
3772 - 'html' => '',
3773 - 'chat_mode' => 'ai',
3774 - 'session_id' => $session_id
3775 - ]);
3776 - wp_die();
3777 - }
3778 -
3779 - $telegram_bot_token = $this->options['telegram_bot_token'] ?? '';
3780 - $telegram_group_id = $this->options['telegram_group_id'] ?? '';
3781 -
3782 - if (empty($telegram_bot_token) || empty($telegram_group_id)) {
3783 - return false;
3784 - }
3785 -
3786 - // Check if topic already exists for this session
3787 - $topic_id = get_option("mxchat_telegram_topic_{$session_id}", '');
3788 -
3789 - if (empty($topic_id)) {
3790 - // Generate topic name
3791 - $topic_name = $this->generate_telegram_topic_name($session_id);
3792 -
3793 - // Random icon color (Telegram forum topic colors)
3794 - $icon_colors = [0x6FB9F0, 0xFFD67E, 0xCB86DB, 0x8EEE98, 0xFF93B2, 0xFB6F5F];
3795 - $icon_color = $icon_colors[array_rand($icon_colors)];
3796 -
3797 - // Create forum topic
3798 - $response = wp_remote_post("https://api.telegram.org/bot{$telegram_bot_token}/createForumTopic", [
3799 - 'headers' => ['Content-Type' => 'application/json'],
3800 - 'body' => json_encode([
3801 - 'chat_id' => $telegram_group_id,
3802 - 'name' => $topic_name,
3803 - 'icon_color' => $icon_color
3804 - ])
3805 - ]);
3806 -
3807 - if (!is_wp_error($response)) {
3808 - $response_body = wp_remote_retrieve_body($response);
3809 - $response_data = json_decode($response_body, true);
3810 -
3811 - if (isset($response_data['ok']) && $response_data['ok']) {
3812 - $topic_id = $response_data['result']['message_thread_id'];
3813 - update_option("mxchat_telegram_topic_{$session_id}", $topic_id);
3814 - update_option("mxchat_telegram_group_{$session_id}", $telegram_group_id);
3815 - }
3816 - }
3817 -
3818 - if (empty($topic_id)) {
3819 - return false; // Failed to create topic
3820 - }
3821 - }
3822 -
3823 - // Get recent chat history
3824 - $history = get_option("mxchat_history_{$session_id}", []);
3825 - $recent_history = array_slice($history, -5);
3826 -
3827 - // Format conversation context for Telegram (HTML format)
3828 - $conversation_context = "";
3829 - if (!empty($recent_history)) {
3830 - $conversation_context = "<b>Recent Conversation:</b>\n";
3831 - foreach ($recent_history as $hist_message) {
3832 - $role_display = $hist_message['role'] === 'user' ? '👤 User' : '🤖 AI';
3833 - $escaped_content = htmlspecialchars($hist_message['content'], ENT_QUOTES, 'UTF-8');
3834 - $conversation_context .= "{$role_display}: {$escaped_content}\n";
3835 - }
3836 - $conversation_context .= "\n";
3837 - }
3838 -
3839 - // Get user info
3840 - $user_email = get_option("mxchat_email_{$session_id}", 'Not provided');
3841 - $user_name = get_option("mxchat_name_{$session_id}", 'Anonymous');
3842 -
3843 - // Update session mode
3844 - update_option("mxchat_mode_{$session_id}", 'agent');
3845 -
3846 - // Send initial message to topic
3847 - $escaped_message = htmlspecialchars($message, ENT_QUOTES, 'UTF-8');
3848 - $topic_message = "🔔 <b>New Live Agent Request</b>\n\n";
3849 - $topic_message .= "<b>Session ID:</b> <code>{$session_id}</code>\n";
3850 - $topic_message .= "<b>User:</b> {$user_name}\n";
3851 - $topic_message .= "<b>Email:</b> {$user_email}\n\n";
3852 -
3853 - if (!empty($conversation_context)) {
3854 - $topic_message .= $conversation_context;
3855 - }
3856 -
3857 - $topic_message .= "<b>Current Message:</b>\n{$escaped_message}\n\n";
3858 - $topic_message .= "<i>Reply in this topic - messages will be sent to the user</i>\n";
3859 - $topic_message .= "<i>Type #close, #end, #disconnect, or #done to end the session</i>";
3860 -
3861 - wp_remote_post("https://api.telegram.org/bot{$telegram_bot_token}/sendMessage", [
3862 - 'headers' => ['Content-Type' => 'application/json'],
3863 - 'body' => json_encode([
3864 - 'chat_id' => $telegram_group_id,
3865 - 'message_thread_id' => $topic_id,
3866 - 'text' => $topic_message,
3867 - 'parse_mode' => 'HTML'
3868 - ])
3869 - ]);
3870 -
3871 - $success_message = $this->options['telegram_notification_message'] ?? "I've notified a support agent. Please allow a moment for them to respond.";
3872 - $this->mxchat_save_chat_message($session_id, 'bot', $success_message);
3873 -
3874 - $this->fallbackResponse = [
3875 - 'text' => $success_message,
3876 - 'html' => '',
3877 - 'images' => [],
3878 - 'chat_mode' => 'agent'
3879 - ];
3880 -
3881 - wp_send_json([
3882 - 'success' => true,
3883 - 'text' => $success_message,
3884 - 'html' => '',
3885 - 'chat_mode' => 'agent',
3886 - 'session_id' => $session_id,
3887 - 'fallbackResponse' => $this->fallbackResponse
3888 - ]);
3889 - wp_die();
3890 -}
3891 -
3892 -/**
3893 - * Generate topic name for Telegram forum
3894 - */
3895 -private function generate_telegram_topic_name($session_id) {
3896 - $name = null;
3897 - $email = null;
3898 -
3899 - // Check logged in user
3900 - if (is_user_logged_in()) {
3901 - $current_user = wp_get_current_user();
3902 - if (!empty($current_user->display_name)) {
3903 - $name = $current_user->display_name;
3904 - }
3905 - if (!empty($current_user->user_email)) {
3906 - $email = $current_user->user_email;
3907 - }
3908 - }
3909 -
3910 - // Check session data
3911 - if (empty($name)) {
3912 - $name = get_option("mxchat_name_{$session_id}");
3913 - }
3914 - if (empty($email)) {
3915 - $email = get_option("mxchat_email_{$session_id}");
3916 - }
3917 -
3918 - // Generate topic name
3919 - $session_suffix = substr($session_id, -6);
3920 -
3921 - if (!empty($name)) {
3922 - // Clean name for topic (max 128 chars in Telegram)
3923 - $clean_name = preg_replace('/[^\p{L}\p{N}\s\-]/u', '', $name);
3924 - $clean_name = trim($clean_name);
3925 - if (strlen($clean_name) > 50) {
3926 - $clean_name = substr($clean_name, 0, 50);
3927 - }
3928 - return "Chat - {$clean_name} ({$session_suffix})";
3929 - } elseif (!empty($email)) {
3930 - // Use email prefix
3931 - $email_prefix = explode('@', $email)[0];
3932 - if (strlen($email_prefix) > 30) {
3933 - $email_prefix = substr($email_prefix, 0, 30);
3934 - }
3935 - return "Chat - {$email_prefix} ({$session_suffix})";
3936 - }
3937 -
3938 - return "Chat - {$session_suffix}";
3939 -}
3940 -
3941 -/**
3942 - * Send user message to Telegram agent
3943 - */
3944 -public function mxchat_send_user_message_to_telegram_agent($message, $user_id, $session_id) {
3945 - $telegram_bot_token = $this->options['telegram_bot_token'] ?? '';
3946 - $topic_id = get_option("mxchat_telegram_topic_{$session_id}", '');
3947 - $group_id = get_option("mxchat_telegram_group_{$session_id}", '');
3948 -
3949 - if (empty($telegram_bot_token) || empty($topic_id) || empty($group_id)) {
3950 - return false;
3951 - }
3952 -
3953 - $escaped_message = htmlspecialchars($message, ENT_QUOTES, 'UTF-8');
3954 - $user_message = "👤 <b>User:</b> {$escaped_message}";
3955 -
3956 - $response = wp_remote_post("https://api.telegram.org/bot{$telegram_bot_token}/sendMessage", [
3957 - 'headers' => ['Content-Type' => 'application/json'],
3958 - 'body' => json_encode([
3959 - 'chat_id' => $group_id,
3960 - 'message_thread_id' => $topic_id,
3961 - 'text' => $user_message,
3962 - 'parse_mode' => 'HTML'
3963 - ])
3964 - ]);
3965 -
3966 - return !is_wp_error($response);
3967 -}
3968 -
3969 -/**
3970 - * Handle incoming Telegram webhook
3971 - */
3972 -public function handle_telegram_webhook(WP_REST_Request $request) {
3973 - $body = $request->get_body();
3974 - $data = json_decode($body, true);
3975 -
3976 - //error_log('[MxChat Telegram DEBUG] Webhook received: ' . $body);
3977 -
3978 - // Handle message events from forum topics
3979 - if (isset($data['message'])) {
3980 - $message_data = $data['message'];
3981 -
3982 - // Skip if not from a forum topic
3983 - if (!isset($message_data['message_thread_id'])) {
3984 - //error_log('[MxChat Telegram DEBUG] Skipped: No message_thread_id (not a forum topic message)');
3985 - return new WP_REST_Response(['ok' => true]);
3986 - }
3987 -
3988 - // Skip bot messages
3989 - if (isset($message_data['from']['is_bot']) && $message_data['from']['is_bot']) {
3990 - //error_log('[MxChat Telegram DEBUG] Skipped: Message from bot');
3991 - return new WP_REST_Response(['ok' => true]);
3992 - }
3993 -
3994 - $chat_id = $message_data['chat']['id'] ?? '';
3995 - $topic_id = $message_data['message_thread_id'];
3996 - $message_text = $message_data['text'] ?? '';
3997 - $message_id = $message_data['message_id'] ?? '';
3998 - $from = $message_data['from'] ?? [];
3999 - $agent_name = trim(($from['first_name'] ?? '') . ' ' . ($from['last_name'] ?? ''));
4000 - if (empty($agent_name)) {
4001 - $agent_name = $from['username'] ?? 'Agent';
4002 - }
4003 -
4004 - //error_log("[MxChat Telegram DEBUG] Parsed: chat_id={$chat_id}, topic_id={$topic_id}, agent={$agent_name}, text={$message_text}");
4005 -
4006 - // Skip empty messages
4007 - if (empty($message_text)) {
4008 - //error_log('[MxChat Telegram DEBUG] Skipped: Empty message text');
4009 - return new WP_REST_Response(['ok' => true]);
4010 - }
4011 -
4012 - // Find session ID by topic ID - cast to string for comparison
4013 - global $wpdb;
4014 - $topic_id_str = strval($topic_id);
4015 - $session_option = $wpdb->get_var(
4016 - $wpdb->prepare(
4017 - "SELECT option_name FROM {$wpdb->options}
4018 - WHERE option_name LIKE %s
4019 - AND option_value = %s",
4020 - 'mxchat_telegram_topic_%',
4021 - $topic_id_str
4022 - )
4023 - );
4024 -
4025 - //error_log("[MxChat Telegram DEBUG] Looking for topic_id={$topic_id_str} in options, found: " . ($session_option ?: 'NULL'));
4026 -
4027 - if ($session_option) {
4028 - $session_id = str_replace('mxchat_telegram_topic_', '', $session_option);
4029 - //error_log("[MxChat Telegram DEBUG] Session ID: {$session_id}");
4030 -
4031 - // Verify the group ID matches
4032 - $stored_group_id = get_option("mxchat_telegram_group_{$session_id}", '');
4033 - //error_log("[MxChat Telegram DEBUG] Stored group_id={$stored_group_id}, received chat_id={$chat_id}");
4034 -
4035 - if (strval($stored_group_id) != strval($chat_id)) {
4036 - //error_log('[MxChat Telegram DEBUG] Skipped: Group ID mismatch');
4037 - return new WP_REST_Response(['ok' => true]);
4038 - }
4039 -
4040 - // Check for closure commands
4041 - $lower_text = strtolower(trim($message_text));
4042 - if (in_array($lower_text, ['#close', '#end', '#disconnect', '#done'])) {
4043 - //error_log("[MxChat Telegram DEBUG] Closure command received: {$lower_text}");
4044 - // End the live agent session
4045 - update_option("mxchat_mode_{$session_id}", 'ai');
4046 -
4047 - // Save disconnect message
4048 - $disconnect_message = "Live agent session ended. You're now chatting with the AI assistant.";
4049 - $this->mxchat_save_chat_message($session_id, 'bot', $disconnect_message);
4050 -
4051 - // Notify in Telegram
4052 - $telegram_bot_token = $this->options['telegram_bot_token'] ?? '';
4053 - if (!empty($telegram_bot_token)) {
4054 - wp_remote_post("https://api.telegram.org/bot{$telegram_bot_token}/sendMessage", [
4055 - 'headers' => ['Content-Type' => 'application/json'],
4056 - 'body' => json_encode([
4057 - 'chat_id' => $chat_id,
4058 - 'message_thread_id' => $topic_id,
4059 - 'text' => "✅ Session closed. User returned to AI chatbot.",
4060 - 'parse_mode' => 'HTML'
4061 - ])
4062 - ]);
4063 -
4064 - // Optionally close the topic
4065 - wp_remote_post("https://api.telegram.org/bot{$telegram_bot_token}/closeForumTopic", [
4066 - 'headers' => ['Content-Type' => 'application/json'],
4067 - 'body' => json_encode([
4068 - 'chat_id' => $chat_id,
4069 - 'message_thread_id' => $topic_id
4070 - ])
4071 - ]);
4072 - }
4073 -
4074 - return new WP_REST_Response(['ok' => true]);
4075 - }
4076 -
4077 - // Deduplicate messages
4078 - $message_key = md5($session_id . $message_id . $message_text);
4079 - $processed_messages = get_transient('mxchat_telegram_messages_' . $session_id) ?: [];
4080 -
4081 - if (in_array($message_key, $processed_messages)) {
4082 - //error_log('[MxChat Telegram DEBUG] Skipped: Duplicate message');
4083 - return new WP_REST_Response(['ok' => true]);
4084 - }
4085 -
4086 - $processed_messages[] = $message_key;
4087 - if (count($processed_messages) > 50) {
4088 - $processed_messages = array_slice($processed_messages, -50);
4089 - }
4090 - set_transient('mxchat_telegram_messages_' . $session_id, $processed_messages, HOUR_IN_SECONDS);
4091 -
4092 - // Save the agent message - format with agent name prefix for proper parsing
4093 - $formatted_message = "Agent: {$agent_name} - {$message_text}";
4094 - //error_log("[MxChat Telegram DEBUG] Saving agent message: {$formatted_message}");
4095 -
4096 - $this->mxchat_save_chat_message($session_id, 'agent', $formatted_message);
4097 -
4098 - // Verify the message was saved to history
4099 - $history = get_option("mxchat_history_{$session_id}", []);
4100 - $last_message = end($history);
4101 - //error_log("[MxChat Telegram DEBUG] History after save - count: " . count($history) . ", last message role: " . ($last_message['role'] ?? 'none'));
4102 -
4103 - // Send confirmation back to Telegram
4104 - $telegram_bot_token = $this->options['telegram_bot_token'] ?? '';
4105 - if (!empty($telegram_bot_token)) {
4106 - $confirm_key = 'mxchat_telegram_confirm_' . $message_key;
4107 - if (!get_transient($confirm_key)) {
4108 - wp_remote_post("https://api.telegram.org/bot{$telegram_bot_token}/sendMessage", [
4109 - 'headers' => ['Content-Type' => 'application/json'],
4110 - 'body' => json_encode([
4111 - 'chat_id' => $chat_id,
4112 - 'message_thread_id' => $topic_id,
4113 - 'text' => "✅ <i>Message sent to user</i>",
4114 - 'parse_mode' => 'HTML',
4115 - 'reply_to_message_id' => $message_id
4116 - ])
4117 - ]);
4118 - set_transient($confirm_key, true, 300);
4119 - }
4120 - }
4121 - } else {
4122 - //error_log("[MxChat Telegram DEBUG] No session found for topic_id={$topic_id}");
4123 - }
4124 - } else {
4125 - //error_log('[MxChat Telegram DEBUG] No message in webhook data');
4126 - }
4127 -
4128 - return new WP_REST_Response(['ok' => true]);
4129 -}
4130 -
4131 -public function mxchat_send_user_message_to_agent($message, $user_id, $session_id) {
4132 - // Check if this is a Telegram agent session
4133 - $telegram_topic_id = get_option("mxchat_telegram_topic_{$session_id}", '');
4134 - if (!empty($telegram_topic_id)) {
4135 - return $this->mxchat_send_user_message_to_telegram_agent($message, $user_id, $session_id);
4136 - }
4137 -
4138 - // Otherwise, try Slack
4139 - $slack_bot_token = $this->options['live_agent_bot_token'] ?? '';
4140 - $channel_id = get_option("mxchat_channel_{$session_id}", '');
4141 -
4142 - if (empty($slack_bot_token) || empty($channel_id)) {
4143 - return false;
4144 - }
4145 -
4146 - $user_message = "💬 *User:* {$message}";
4147 -
4148 - $response = wp_remote_post('https://slack.com/api/chat.postMessage', [
4149 - 'headers' => [
4150 - 'Content-Type' => 'application/json',
4151 - 'Authorization' => 'Bearer ' . $slack_bot_token
4152 - ],
4153 - 'body' => json_encode([
4154 - 'channel' => $channel_id,
4155 - 'text' => $user_message,
4156 - 'mrkdwn' => true
4157 - ])
4158 - ]);
4159 -
4160 - return !is_wp_error($response);
4161 -}
4162 -public function handle_slack_interaction(WP_REST_Request $request) {
4163 - //error_log('Received Slack interaction');
4164 -
4165 - $payload = json_decode($request->get_param('payload'), true);
4166 - //error_log('Payload: ' . print_r($payload, true));
4167 -
4168 - // Handle button click
4169 - if ($payload['type'] === 'block_actions' && $payload['actions'][0]['action_id'] === 'reply_to_user') {
4170 - $session_id = $payload['actions'][0]['value'];
4171 - $trigger_id = $payload['trigger_id'];
4172 -
4173 - // Get Bot Token from settings
4174 - $slack_token = $this->options['live_agent_bot_token'] ?? '';
4175 -
4176 - if (empty($slack_token)) {
4177 - //error_log('Slack Bot Token not configured');
4178 - return new WP_REST_Response(['error' => esc_html__('Bot token not configured', 'mxchat')], 400);
4179 - }
4180 - $response = wp_remote_post('https://slack.com/api/views.open', [
4181 - 'headers' => [
4182 - 'Content-Type' => 'application/json',
4183 - 'Authorization' => 'Bearer ' . $slack_token
4184 - ],
4185 - 'body' => json_encode([
4186 - 'trigger_id' => $trigger_id,
4187 - 'view' => [
4188 - 'type' => 'modal',
4189 - 'callback_id' => 'reply_modal',
4190 - 'title' => [
4191 - 'type' => 'plain_text',
4192 - 'text' => __('Reply to User', 'mxchat')
4193 - ],
4194 - 'submit' => [
4195 - 'type' => 'plain_text',
4196 - 'text' => __('Send', 'mxchat')
4197 - ],
4198 - 'close' => [
4199 - 'type' => 'plain_text',
4200 - 'text' => __('Cancel', 'mxchat')
4201 - ],
4202 - 'blocks' => [
4203 - [
4204 - 'type' => 'input',
4205 - 'block_id' => 'reply_block',
4206 - 'label' => [
4207 - 'type' => 'plain_text',
4208 - 'text' => sprintf(__('Reply to session: %s', 'mxchat'), $session_id)
4209 - ],
4210 - 'element' => [
4211 - 'type' => 'plain_text_input',
4212 - 'action_id' => 'message',
4213 - 'multiline' => true,
4214 - 'placeholder' => [
4215 - 'type' => 'plain_text',
4216 - 'text' => __('Type your message here...', 'mxchat')
4217 - ]
4218 - ]
4219 - ]
4220 - ],
4221 - 'private_metadata' => $session_id
4222 - ]
4223 - ])
4224 - ]);
4225 -
4226 - //error_log('Views.open response: ' . print_r($response, true));
4227 -
4228 - // Return immediate acknowledgment
4229 - return new WP_REST_Response(['ok' => true]);
4230 - }
4231 -
4232 - // Handle modal submission
4233 -// Handle modal submission
4234 -if ($payload['type'] === 'view_submission') {
4235 - $session_id = $payload['view']['private_metadata'];
4236 - $message = $payload['view']['state']['values']['reply_block']['message']['value'];
4237 -
4238 - // Save the message (keep the message_id but don't include in response)
4239 - $this->mxchat_save_chat_message($session_id, 'agent', $message);
4240 -
4241 - // Keep the original response format for Slack
4242 - return new WP_REST_Response([
4243 - 'response_action' => 'clear'
4244 - ]);
4245 -}
4246 -
4247 - // Default acknowledgment
4248 - return new WP_REST_Response(['ok' => true]);
4249 -}
4250 -public function mxchat_handle_agent_response(WP_REST_Request $request) {
4251 - //error_log('Received agent response request');
4252 - //error_log('Request data: ' . print_r($request->get_params(), true));
4253 - // //error_log('Raw body: ' . file_get_contents('php://input'));
4254 -
4255 - // Get the data from Slack's slash command format
4256 - $command_text = $request->get_param('text');
4257 - // //error_log('Command text: ' . $command_text);
4258 -
4259 - if (empty($command_text)) {
4260 - //error_log(esc_html__('Agent response error: No command text received', 'mxchat'));
4261 - return new WP_REST_Response([
4262 - 'error' => esc_html__('Command text is required. Format: /reply session_id message', 'mxchat')
4263 - ], 400);
4264 - }
4265 -
4266 - // Split the command text into session_id and message
4267 - $parts = explode(' ', $command_text, 2);
4268 - if (count($parts) !== 2) {
4269 - //error_log('Agent response error: Invalid command format');
4270 - return new WP_REST_Response([
4271 - 'error' => esc_html__('Invalid format. Use: /reply session_id message', 'mxchat')
4272 - ], 400);
4273 - }
4274 -
4275 - $session_id = sanitize_text_field($parts[0]);
4276 - $message = sanitize_text_field($parts[1]);
4277 -
4278 - //error_log("Processing agent response - Session ID: $session_id, Message: $message");
4279 -
4280 - // Save the message
4281 - $message_id = $this->mxchat_save_chat_message($session_id, 'agent', $message);
4282 -
4283 - if (!$message_id) {
4284 - // //error_log('Failed to save agent message');
4285 - return new WP_REST_Response([
4286 - 'error' => esc_html__('Failed to save message', 'mxchat')
4287 - ], 500);
4288 - }
4289 -
4290 - // Return success response in Slack's expected format
4291 - return new WP_REST_Response([
4292 - 'response_type' => 'in_channel',
4293 - 'text' => esc_html__("Message sent successfully to session $session_id", 'mxchat')
4294 - ], 200);
4295 -}
4296 -public function mxchat_handle_switch_to_chatbot_intent($message, $user_id, $session_id) {
4297 - // Update mode to AI
4298 - update_option("mxchat_mode_{$session_id}", 'ai');
4299 -
4300 - // Clear any existing PDF context to start fresh
4301 - $this->clear_pdf_transients($session_id);
4302 -
4303 - // Set the response with explicit chat_mode
4304 - $this->fallbackResponse = [
4305 - 'text' => esc_html__('You are now chatting with the AI chatbot.', 'mxchat'),
4306 - 'html' => '',
4307 - 'images' => [],
4308 - 'chat_mode' => 'ai' // Ensure this is set
4309 - ];
4310 -
4311 - // Return the complete response array instead of just true
4312 - return $this->fallbackResponse;
4313 -}
4314 -
4315 -public function handle_slack_messages(WP_REST_Request $request) {
4316 - // Log the incoming request for debugging
4317 - //error_log('Slack events request received: ' . $request->get_body());
4318 -
4319 - $body = $request->get_body();
4320 - $data = json_decode($body, true);
4321 -
4322 - // Handle Slack URL verification
4323 - if (isset($data['type']) && $data['type'] === 'url_verification') {
4324 - //error_log('Slack URL verification challenge: ' . $data['challenge']);
4325 - return new WP_REST_Response($data['challenge'], 200, ['Content-Type' => 'text/plain']);
4326 - }
4327 -
4328 - // IMPORTANT: Handle Slack's event deduplication
4329 - if (isset($data['event_id'])) {
4330 - $event_id = $data['event_id'];
4331 - $processed_events = get_transient('mxchat_slack_events') ?: [];
4332 -
4333 - // Check if we've already processed this event
4334 - if (in_array($event_id, $processed_events)) {
4335 - //error_log("Duplicate event detected: $event_id");
4336 - return new WP_REST_Response(['ok' => true]);
4337 - }
4338 -
4339 - // Add this event to processed list
4340 - $processed_events[] = $event_id;
4341 - // Keep only last 100 events to prevent memory issues
4342 - if (count($processed_events) > 100) {
4343 - $processed_events = array_slice($processed_events, -100);
4344 - }
4345 - // Store for 1 hour
4346 - set_transient('mxchat_slack_events', $processed_events, HOUR_IN_SECONDS);
4347 - }
4348 -
4349 - // Handle message events
4350 - if (isset($data['event']) && $data['event']['type'] === 'message') {
4351 - $event = $data['event'];
4352 -
4353 - // Skip bot messages and messages with subtypes (like bot_message)
4354 - if (isset($event['bot_id']) || isset($event['subtype'])) {
4355 - return new WP_REST_Response(['ok' => true]);
4356 - }
4357 -
4358 - // Additional check: Skip if this is a threaded reply to our confirmation
4359 - if (isset($event['thread_ts']) && $event['thread_ts'] !== $event['ts']) {
4360 - return new WP_REST_Response(['ok' => true]);
4361 - }
4362 -
4363 - $channel_id = $event['channel'];
4364 - $message_text = $event['text'] ?? '';
4365 - $message_ts = $event['ts'] ?? '';
4366 -
4367 - // Find session ID by looking for matching channel
4368 - global $wpdb;
4369 - $session_option = $wpdb->get_var(
4370 - $wpdb->prepare(
4371 - "SELECT option_name FROM {$wpdb->options}
4372 - WHERE option_name LIKE 'mxchat_channel_%'
4373 - AND option_value = %s",
4374 - $channel_id
4375 - )
4376 - );
4377 -
4378 - if ($session_option) {
4379 - $session_id = str_replace('mxchat_channel_', '', $session_option);
4380 -
4381 - // Create a unique key for this specific message
4382 - $message_key = md5($session_id . $message_ts . $message_text);
4383 - $processed_messages = get_transient('mxchat_processed_messages_' . $session_id) ?: [];
4384 -
4385 - // Check if we've already processed this exact message
4386 - if (in_array($message_key, $processed_messages)) {
4387 - //error_log("Duplicate message detected for session $session_id");
4388 - return new WP_REST_Response(['ok' => true]);
4389 - }
4390 -
4391 - // Add to processed messages
4392 - $processed_messages[] = $message_key;
4393 - // Keep only last 50 messages per session
4394 - if (count($processed_messages) > 50) {
4395 - $processed_messages = array_slice($processed_messages, -50);
4396 - }
4397 - set_transient('mxchat_processed_messages_' . $session_id, $processed_messages, HOUR_IN_SECONDS);
4398 -
4399 - $slack_bot_token = $this->options['live_agent_bot_token'] ?? '';
4400 -
4401 - // Handle agent ending the chat — transfer back to AI
4402 - // Format: "!endchat" or "!endchat <custom message to user>"
4403 - if (preg_match('/^!endchat\b/i', trim($message_text))) {
4404 - update_option("mxchat_mode_{$session_id}", 'ai');
4405 -
4406 - // Extract custom message after !endchat, or use empty string
4407 - $custom_message = trim(preg_replace('/^!endchat\s*/i', '', trim($message_text)));
4408 -
4409 - // Send the agent's custom farewell message if provided
4410 - if (!empty($custom_message)) {
4411 - $this->mxchat_save_chat_message($session_id, 'agent', $custom_message);
4412 - }
4413 -
4414 - // Confirm in Slack channel
4415 - if (!empty($slack_bot_token)) {
4416 - wp_remote_post('https://slack.com/api/chat.postMessage', [
4417 - 'headers' => [
4418 - 'Content-Type' => 'application/json',
4419 - 'Authorization' => 'Bearer ' . $slack_bot_token
4420 - ],
4421 - 'body' => json_encode([
4422 - 'channel' => $channel_id,
4423 - 'text' => "✅ *Chat ended.* User has been transferred back to AI mode.",
4424 - 'mrkdwn' => true
4425 - ])
4426 - ]);
4427 - }
4428 -
4429 - return new WP_REST_Response(['ok' => true]);
4430 - }
4431 -
4432 - // Save the agent message
4433 - $this->mxchat_save_chat_message($session_id, 'agent', $message_text);
4434 -
4435 - // Send confirmation back to Slack (only once)
4436 - if (!empty($slack_bot_token)) {
4437 - // Use a transient to prevent duplicate confirmations
4438 - $confirm_key = 'mxchat_confirm_' . $message_key;
4439 - if (!get_transient($confirm_key)) {
4440 - wp_remote_post('https://slack.com/api/chat.postMessage', [
4441 - 'headers' => [
4442 - 'Content-Type' => 'application/json',
4443 - 'Authorization' => 'Bearer ' . $slack_bot_token
4444 - ],
4445 - 'body' => json_encode([
4446 - 'channel' => $channel_id,
4447 - 'text' => "✅ _Message sent to user_",
4448 - 'thread_ts' => $event['ts'] // Reply in thread
4449 - ])
4450 - ]);
4451 - // Set transient to prevent duplicate confirmations
4452 - set_transient($confirm_key, true, 300); // 5 minutes
4453 - }
4454 - }
4455 - }
4456 - }
4457 -
4458 - return new WP_REST_Response(['ok' => true]);
4459 -}
4460 -
4461 -// For the word upload handler
4462 -public function mxchat_handle_word_upload() {
4463 - // Delegate to word handler
4464 - $this->word_handler->mxchat_handle_word_upload();
4465 -}
4466 -
4467 -// For the word removal handler
4468 -public function mxchat_handle_word_remove() {
4469 - // Delegate to word handler
4470 - $this->word_handler->mxchat_handle_word_remove();
4471 -}
4472 -
4473 -// For the word status check
4474 -public function mxchat_check_word_status() {
4475 - // Delegate to word handler
4476 - $this->word_handler->mxchat_check_word_status();
4477 -}
4478 -
4479 -
4480 -private function mxchat_get_user_identifier() {
4481 - return MxChat_User::mxchat_get_user_identifier();
4482 -}
4483 -
4484 -private function mxchat_generate_embedding($text, $api_key) {
4485 - try {
4486 - // Get options and selected model
4487 - $options = get_option('mxchat_options');
4488 - $selected_model = $options['embedding_model'] ?? 'text-embedding-ada-002';
4489 -
4490 - // Determine endpoint and API key based on model
4491 - if (strpos($selected_model, 'voyage') === 0) {
4492 - $endpoint = 'https://api.voyageai.com/v1/embeddings';
4493 - $api_key = $options['voyage_api_key'] ?? '';
4494 -
4495 - // Check if Voyage API key is missing
4496 - if (empty($api_key)) {
4497 - //error_log('Voyage API key is missing');
4498 - return [
4499 - 'error' => esc_html__('Voyage AI API key is not configured', 'mxchat'),
4500 - 'error_code' => 'missing_voyage_api_key'
4501 - ];
4502 - }
4503 - } elseif (strpos($selected_model, 'gemini-embedding') === 0) {
4504 - $endpoint = 'https://generativelanguage.googleapis.com/v1beta/models/' . $selected_model . ':embedContent';
4505 - $api_key = $options['gemini_api_key'] ?? '';
4506 -
4507 - // Check if Gemini API key is missing
4508 - if (empty($api_key)) {
4509 - //error_log('Gemini API key is missing');
4510 - return [
4511 - 'error' => esc_html__('Google Gemini API key is not configured', 'mxchat'),
4512 - 'error_code' => 'missing_gemini_api_key'
4513 - ];
4514 - }
4515 - } else {
4516 - $endpoint = 'https://api.openai.com/v1/embeddings';
4517 - // Use the passed API key for OpenAI
4518 -
4519 - // Check if OpenAI API key is missing
4520 - if (empty($api_key)) {
4521 - //error_log('OpenAI API key is missing');
4522 - return [
4523 - 'error' => esc_html__('OpenAI API key is not configured', 'mxchat'),
4524 - 'error_code' => 'missing_openai_api_key'
4525 - ];
4526 - }
4527 - }
4528 -
4529 - // Check if text is empty
4530 - if (empty($text)) {
4531 - //error_log('Empty text provided for embedding generation');
4532 - return [
4533 - 'error' => esc_html__('No text provided for embedding generation', 'mxchat'),
4534 - 'error_code' => 'empty_embedding_text'
4535 - ];
4536 - }
4537 -
4538 - // Prepare request body based on provider
4539 - if (strpos($selected_model, 'gemini-embedding') === 0) {
4540 - // Gemini API format
4541 - $request_body = [
4542 - 'model' => 'models/' . $selected_model,
4543 - 'content' => [
4544 - 'parts' => [
4545 - ['text' => $text]
4546 - ]
4547 - ],
4548 - 'outputDimensionality' => 1536
4549 - ];
4550 -
4551 - // Prepare headers for Gemini (API key as query parameter)
4552 - $endpoint .= '?key=' . $api_key;
4553 - $headers = [
4554 - 'Content-Type' => 'application/json'
4555 - ];
4556 - } else {
4557 - // OpenAI/Voyage API format
4558 - $request_body = [
4559 - 'input' => $text,
4560 - 'model' => $selected_model
4561 - ];
4562 -
4563 - // Add output_dimension for voyage-3-large
4564 - if ($selected_model === 'voyage-3-large') {
4565 - $request_body['output_dimension'] = 2048;
4566 - }
4567 -
4568 - // Prepare headers for OpenAI/Voyage
4569 - $headers = [
4570 - 'Content-Type' => 'application/json',
4571 - 'Authorization' => 'Bearer ' . $api_key
4572 - ];
4573 - }
4574 -
4575 - // Prepare request arguments
4576 - $args = [
4577 - 'body' => wp_json_encode($request_body),
4578 - 'headers' => $headers,
4579 - 'timeout' => 60,
4580 - 'redirection' => 5,
4581 - 'blocking' => true,
4582 - 'httpversion' => '1.0',
4583 - 'sslverify' => true,
4584 - ];
4585 -
4586 - // Make the request
4587 - $response = wp_remote_post($endpoint, $args);
4588 -
4589 - // Handle WordPress errors
4590 - if (is_wp_error($response)) {
4591 - $error_message = $response->get_error_message();
4592 - //error_log('Embedding Generation Error: ' . $error_message);
4593 - return [
4594 - 'error' => esc_html__('Connection error when generating embeddings: ', 'mxchat') . esc_html($error_message),
4595 - 'error_code' => 'embedding_connection_error'
4596 - ];
4597 - }
4598 -
4599 - // Check HTTP status code
4600 - $status_code = wp_remote_retrieve_response_code($response);
4601 - if ($status_code !== 200) {
4602 - $response_body = json_decode(wp_remote_retrieve_body($response), true);
4603 -
4604 - $error_message = isset($response_body['error']['message'])
4605 - ? $response_body['error']['message']
4606 - : 'HTTP Error ' . $status_code;
4607 -
4608 - $error_type = isset($response_body['error']['type'])
4609 - ? $response_body['error']['type']
4610 - : 'unknown';
4611 -
4612 - //error_log('Embedding API HTTP Error: ' . $status_code . ' - ' . $error_message);
4613 -
4614 - // Handle specific error types
4615 - switch ($error_type) {
4616 - case 'invalid_request_error':
4617 - if (strpos($error_message, 'API key') !== false) {
4618 - return [
4619 - 'error' => esc_html__('Invalid API key for embedding generation. Please check your API key configuration.', 'mxchat'),
4620 - 'error_code' => 'embedding_invalid_api_key'
4621 - ];
4622 - }
4623 - break;
4624 -
4625 - case 'authentication_error':
4626 - return [
4627 - 'error' => esc_html__('Authentication failed for embedding generation. Please check your API key.', 'mxchat'),
4628 - 'error_code' => 'embedding_auth_error'
4629 - ];
4630 -
4631 - case 'rate_limit_exceeded':
4632 - return [
4633 - 'error' => esc_html__('Rate limit exceeded for embedding generation. Please try again later.', 'mxchat'),
4634 - 'error_code' => 'embedding_rate_limit'
4635 - ];
4636 -
4637 - case 'quota_exceeded':
4638 - return [
4639 - 'error' => esc_html__('API quota exceeded for embedding generation. Please check your billing details.', 'mxchat'),
4640 - 'error_code' => 'embedding_quota_exceeded'
4641 - ];
4642 - }
4643 -
4644 - // Generic error fallback
4645 - return [
4646 - 'error' => esc_html__('Embedding API error - check embedding API key.: ', 'mxchat') . esc_html($error_message),
4647 - 'error_code' => 'embedding_api_error',
4648 - 'status_code' => $status_code
4649 - ];
4650 - }
4651 -
4652 - $response_body = json_decode(wp_remote_retrieve_body($response), true);
4653 -
4654 - // Handle different response formats based on provider
4655 - if (strpos($selected_model, 'gemini-embedding') === 0) {
4656 - // Gemini API response format
4657 - if (isset($response_body['embedding']['values']) && is_array($response_body['embedding']['values'])) {
4658 - return $response_body['embedding']['values'];
4659 - } else {
4660 - //error_log('Invalid Gemini embedding response: ' . wp_json_encode($response_body));
4661 - return [
4662 - 'error' => esc_html__('Received invalid embedding data from the Gemini API.', 'mxchat'),
4663 - 'error_code' => 'invalid_gemini_embedding_response'
4664 - ];
4665 - }
4666 - } else {
4667 - // OpenAI/Voyage API response format
4668 - if (isset($response_body['data'][0]['embedding']) && is_array($response_body['data'][0]['embedding'])) {
4669 - return $response_body['data'][0]['embedding'];
4670 - } else {
4671 - //error_log('Invalid embedding response: ' . wp_json_encode($response_body));
4672 - return [
4673 - 'error' => esc_html__('Received invalid embedding data from the API.', 'mxchat'),
4674 - 'error_code' => 'invalid_embedding_response'
4675 - ];
4676 - }
4677 - }
4678 - } catch (Exception $e) {
4679 - //error_log('Embedding Exception: ' . $e->getMessage());
4680 - return [
4681 - 'error' => esc_html__('System error when generating embeddings: ', 'mxchat') . esc_html($e->getMessage()),
4682 - 'error_code' => 'embedding_exception'
4683 - ];
4684 - }
4685 -}
4686 -
4687 -
4688 -private function mxchat_find_relevant_content($user_embedding, $bot_id = 'default', $user_query = '') {
4689 - //error_log("MXCHAT DEBUG: find_relevant_content called with bot_id: " . $bot_id);
4690 -
4691 - // Check for OpenAI Vector Store first (takes priority when enabled)
4692 - $bot_vectorstore_config = $this->get_bot_vectorstore_config($bot_id);
4693 -
4694 - if ($bot_vectorstore_config['use_vectorstore']) {
4695 - // Get current model to verify it's an OpenAI model
4696 - $bot_options = $this->get_bot_options($bot_id);
4697 - $mxchat_options = get_option('mxchat_options', array());
4698 - $current_options = !empty($bot_options) ? $bot_options : $mxchat_options;
4699 - $selected_model = $current_options['model'] ?? 'gpt-5.1-chat-latest';
4700 -
4701 - if ($this->is_openai_chat_model($selected_model)) {
4702 - //error_log("MXCHAT DEBUG: Using OpenAI Vector Store for knowledge retrieval");
4703 - return $this->find_relevant_content_openai_vectorstore($user_query, $bot_id, $bot_vectorstore_config);
4704 - } else {
4705 - //error_log("MXCHAT DEBUG: Vector Store enabled but model is not OpenAI (" . $selected_model . "), skipping Vector Store");
4706 - }
4707 - }
4708 -
4709 - // Get bot-specific Pinecone configuration
4710 - $bot_pinecone_config = $this->get_bot_pinecone_config($bot_id);
4711 -
4712 - // Debug: Log the Pinecone configuration
4713 - //error_log("MXCHAT DEBUG: Pinecone config for bot '$bot_id':");
4714 - //error_log(" - use_pinecone: " . ($bot_pinecone_config['use_pinecone'] ? 'true' : 'false'));
4715 - //error_log(" - api_key: " . (empty($bot_pinecone_config['api_key']) ? 'EMPTY' : 'SET (hidden)'));
4716 - //error_log(" - host: " . ($bot_pinecone_config['host'] ?? 'NOT SET'));
4717 - //error_log(" - namespace: " . ($bot_pinecone_config['namespace'] ?? 'NOT SET'));
4718 -
4719 - // Determine whether to use Pinecone based on bot configuration
4720 - $use_pinecone = isset($bot_pinecone_config['use_pinecone']) ? $bot_pinecone_config['use_pinecone'] : false;
4721 -
4722 - //error_log("MXCHAT DEBUG: Using " . ($use_pinecone ? "Pinecone" : "WordPress Database") . " for knowledge retrieval");
4723 -
4724 - if ($use_pinecone) {
4725 - return $this->find_relevant_content_pinecone($user_embedding, $bot_id, $bot_pinecone_config);
4726 - } else {
4727 - return $this->find_relevant_content_wordpress($user_embedding, $bot_id);
4728 - }
4729 -}
4730 -
4731 -private function find_relevant_content_wordpress($user_embedding, $bot_id = 'default') {
4732 - global $wpdb;
4733 - $system_prompt_table = $wpdb->prefix . 'mxchat_system_prompt_content';
4734 - // Initialize similarity analysis storage
4735 - $this->last_similarity_analysis = [
4736 - 'knowledge_base_type' => 'WordPress Database',
4737 - 'bot_id' => $bot_id,
4738 - 'top_matches' => [],
4739 - 'threshold_used' => 0,
4740 - 'total_checked' => 0
4741 - ];
4742 -
4743 - // NEW: Initialize valid URLs array
4744 - $valid_urls = [];
4745 -
4746 - // Get bot-specific options for similarity threshold
4747 - $bot_options = $this->get_bot_options($bot_id);
4748 - $current_options = !empty($bot_options) ? $bot_options : $this->options;
4749 -
4750 - // Get knowledge manager instance for role checking
4751 - $knowledge_manager = MxChat_Knowledge_Manager::get_instance();
4752 -
4753 - // Get base similarity threshold from bot options or default options
4754 - $similarity_threshold = isset($current_options['similarity_threshold'])
4755 - ? ((int) $current_options['similarity_threshold']) / 100
4756 - : 0.35;
4757 - $this->last_similarity_analysis['threshold_used'] = $similarity_threshold;
4758 -
4759 - // Precompute bot_filter once, outside the streaming loop
4760 - $bot_filter = '';
4761 - if ($bot_id !== 'default') {
4762 - $column_exists = $wpdb->get_var("SHOW COLUMNS FROM {$system_prompt_table} LIKE 'bot_metadata'");
4763 - if ($column_exists) {
4764 - $bot_filter = $wpdb->prepare(" AND (bot_metadata = %s OR bot_metadata IS NULL OR bot_metadata = '')", $bot_id);
4765 - }
4766 - }
4767 -
4768 - // ===== STREAMING TOP-K PASS =====
4769 - // Stream rows in small batches, compute cosine similarity per row, and keep only:
4770 - // - top 10 by raw similarity (for the testing/debug display panel)
4771 - // - candidates above threshold with access (capped) for context assembly
4772 - // This bounds peak memory regardless of knowledge base size and avoids loading
4773 - // article_content for every row. article_content is fetched in Phase 2 for winners only.
4774 - $batch_size = 250;
4775 - $max_candidates = 200; // safety cap, well above rag_sources_limit * max_chunks_per_source
4776 - $top_display = [];
4777 - $candidates = [];
4778 - $total_checked = 0;
4779 - $offset = 0;
4780 -
4781 - do {
4782 - $batch = $wpdb->get_results($wpdb->prepare(
4783 - "SELECT id, embedding_vector, source_url, role_restriction
4784 - FROM {$system_prompt_table}
4785 - WHERE 1=1 {$bot_filter}
4786 - LIMIT %d OFFSET %d",
4787 - $batch_size,
4788 - $offset
4789 - ));
4790 -
4791 - if (empty($batch)) {
4792 - break;
4793 - }
4794 -
4795 - foreach ($batch as $row) {
4796 - $database_embedding = $row->embedding_vector
4797 - ? unserialize($row->embedding_vector, ['allowed_classes' => false])
4798 - : null;
4799 -
4800 - if (!is_array($database_embedding) || !is_array($user_embedding)) {
4801 - unset($database_embedding);
4802 - continue;
4803 - }
4804 -
4805 - $similarity = $this->mxchat_calculate_cosine_similarity($user_embedding, $database_embedding);
4806 - unset($database_embedding);
4807 -
4808 - $role_restriction = $row->role_restriction ?? 'public';
4809 - $has_access = $knowledge_manager->mxchat_user_has_content_access($role_restriction);
4810 - $source_url = $row->source_url ?? '';
4811 -
4812 - // Maintain top 10 display buffer (insert-if-beats-worst)
4813 - if (count($top_display) < 10) {
4814 - $top_display[] = [
4815 - 'id' => $row->id,
4816 - 'similarity' => $similarity,
4817 - 'source_url' => $source_url,
4818 - 'role_restriction' => $role_restriction,
4819 - 'has_access' => $has_access,
4820 - ];
4821 - usort($top_display, function ($a, $b) {
4822 - return $b['similarity'] <=> $a['similarity'];
4823 - });
4824 - } elseif ($similarity > $top_display[9]['similarity']) {
4825 - $top_display[9] = [
4826 - 'id' => $row->id,
4827 - 'similarity' => $similarity,
4828 - 'source_url' => $source_url,
4829 - 'role_restriction' => $role_restriction,
4830 - 'has_access' => $has_access,
4831 - ];
4832 - usort($top_display, function ($a, $b) {
4833 - return $b['similarity'] <=> $a['similarity'];
4834 - });
4835 - }
4836 -
4837 - // Track candidates for context assembly (above threshold + has access)
4838 - if ($similarity >= $similarity_threshold && $has_access) {
4839 - $candidates[] = [
4840 - 'id' => $row->id,
4841 - 'similarity' => $similarity,
4842 - 'source_url' => $source_url,
4843 - ];
4844 - }
4845 -
4846 - $total_checked++;
4847 - }
4848 -
4849 - unset($batch);
4850 -
4851 - // Trim candidates periodically to cap memory during long scans
4852 - if (count($candidates) > $max_candidates) {
4853 - usort($candidates, function ($a, $b) {
4854 - return $b['similarity'] <=> $a['similarity'];
4855 - });
4856 - $candidates = array_slice($candidates, 0, $max_candidates);
4857 - }
4858 -
4859 - $offset += $batch_size;
4860 - } while (true);
4861 -
4862 - if ($total_checked === 0) {
4863 - $this->current_valid_urls = [];
4864 - return '';
4865 - }
4866 -
4867 - // Final candidates sort (best first)
4868 - if (count($candidates) > 1) {
4869 - usort($candidates, function ($a, $b) {
4870 - return $b['similarity'] <=> $a['similarity'];
4871 - });
4872 - }
4873 -
4874 - // ===== PHASE 2: FETCH ARTICLE CONTENT ONLY FOR WINNERS =====
4875 - // Gather unique IDs we actually need (top_display + candidates) and pull
4876 - // article_content in bounded IN() batches. This avoids loading content for
4877 - // every row during the similarity scan.
4878 - $needed_ids = [];
4879 - foreach ($top_display as $item) {
4880 - $needed_ids[$item['id']] = true;
4881 - }
4882 - foreach ($candidates as $item) {
4883 - $needed_ids[$item['id']] = true;
4884 - }
4885 - $needed_ids = array_keys($needed_ids);
4886 -
4887 - $content_map = [];
4888 - if (!empty($needed_ids)) {
4889 - foreach (array_chunk($needed_ids, 250) as $chunk_ids) {
4890 - $placeholders = implode(',', array_fill(0, count($chunk_ids), '%d'));
4891 - $rows = $wpdb->get_results($wpdb->prepare(
4892 - "SELECT id, article_content FROM {$system_prompt_table} WHERE id IN ($placeholders)",
4893 - ...$chunk_ids
4894 - ));
4895 - foreach ($rows as $r) {
4896 - $content_map[$r->id] = $r->article_content;
4897 - }
4898 - unset($rows);
4899 - }
4900 - }
4901 -
4902 - // Build the all_similarities display array from the top 10
4903 - $all_similarities = [];
4904 - foreach ($top_display as $item) {
4905 - $article_content_for_parse = $content_map[$item['id']] ?? '';
4906 - $parsed_for_display = MxChat_Chunker::parse_stored_chunk($article_content_for_parse);
4907 - $is_chunk = $parsed_for_display['is_chunked'];
4908 - $chunk_meta = $parsed_for_display['metadata'];
4909 -
4910 - if (!empty($item['source_url']) && $item['source_url'] !== '#') {
4911 - $source_display = $item['source_url'];
4912 - } else {
4913 - $content_preview = strip_tags($article_content_for_parse);
4914 - $content_preview = preg_replace('/\s+/', ' ', $content_preview);
4915 - $source_display = substr(trim($content_preview), 0, 50) . '...';
4916 - }
4917 -
4918 - $all_similarities[] = [
4919 - 'document_id' => $item['id'],
4920 - 'similarity' => $item['similarity'],
4921 - 'similarity_percentage' => round($item['similarity'] * 100, 2),
4922 - 'above_threshold' => $item['similarity'] >= $similarity_threshold,
4923 - 'source_display' => $source_display,
4924 - 'content_preview' => substr(strip_tags($parsed_for_display['text'] ?? ''), 0, 100) . '...',
4925 - 'used_for_context' => false,
4926 - 'role_restriction' => $item['role_restriction'],
4927 - 'has_access' => $item['has_access'],
4928 - 'filtered_out' => !$item['has_access'],
4929 - 'is_chunk' => $is_chunk,
4930 - 'chunk_index' => $is_chunk ? ($chunk_meta['chunk_index'] ?? 0) : null,
4931 - 'total_chunks' => $is_chunk ? ($chunk_meta['total_chunks'] ?? 1) : null
4932 - ];
4933 - }
4934 -
4935 - // Build url_groups from candidates for chunk reassembly
4936 - $url_groups = array();
4937 - foreach ($candidates as $cand) {
4938 - $article_content = $content_map[$cand['id']] ?? '';
4939 - $parsed = MxChat_Chunker::parse_stored_chunk($article_content);
4940 - $is_chunked = $parsed['is_chunked'];
4941 - $chunk_index = $parsed['metadata']['chunk_index'] ?? 0;
4942 - $text_content = $parsed['text'];
4943 -
4944 - $source_url = $cand['source_url'];
4945 - $group_key = !empty($source_url) ? $source_url : '_manual_' . $cand['id'];
4946 -
4947 - if (!isset($url_groups[$group_key])) {
4948 - $url_groups[$group_key] = array(
4949 - 'source_url' => $source_url,
4950 - 'best_score' => 0,
4951 - 'is_chunked' => $is_chunked,
4952 - 'chunks' => array(),
4953 - 'single_text' => '',
4954 - 'single_id' => null
4955 - );
4956 - }
4957 -
4958 - if ($cand['similarity'] > $url_groups[$group_key]['best_score']) {
4959 - $url_groups[$group_key]['best_score'] = $cand['similarity'];
4960 - }
4961 -
4962 - if ($is_chunked) {
4963 - $url_groups[$group_key]['is_chunked'] = true;
4964 - $url_groups[$group_key]['chunks'][] = array(
4965 - 'id' => $cand['id'],
4966 - 'score' => $cand['similarity'],
4967 - 'chunk_index' => $chunk_index,
4968 - 'text' => $text_content
4969 - );
4970 - } else {
4971 - $url_groups[$group_key]['single_text'] = $text_content;
4972 - $url_groups[$group_key]['single_id'] = $cand['id'];
4973 - }
4974 - }
4975 -
4976 - // Sort ALL similarities for testing display (highest first)
4977 - usort($all_similarities, function ($a, $b) {
4978 - return $b['similarity'] <=> $a['similarity'];
4979 - });
4980 -
4981 - // Sort URL groups by best score (highest first)
4982 - uasort($url_groups, function($a, $b) {
4983 - return $b['best_score'] <=> $a['best_score'];
4984 - });
4985 -
4986 - // Get RAG sources limit from options (default 6, min 3, max 10)
4987 - $rag_sources_limit = isset($current_options['rag_sources_limit']) ? intval($current_options['rag_sources_limit']) : 3;
4988 - if ($rag_sources_limit < 3) $rag_sources_limit = 3;
4989 - if ($rag_sources_limit > 10) $rag_sources_limit = 10;
4990 -
4991 - // Take top N unique URLs based on user setting
4992 - $top_urls = array_slice($url_groups, 0, $rag_sources_limit, true);
4993 -
4994 - // Track which document IDs are used for context
4995 - $used_document_ids = [];
4996 - foreach ($top_urls as $group) {
4997 - if ($group['is_chunked']) {
4998 - foreach ($group['chunks'] as $chunk) {
4999 - $used_document_ids[] = $chunk['id'];
5000 - }
5001 - } elseif ($group['single_id']) {
5002 - $used_document_ids[] = $group['single_id'];
5003 - }
5004 - }
5005 -
5006 - // Update the all_similarities array to mark which were actually used
5007 - foreach ($all_similarities as &$similarity_item) {
5008 - $similarity_item['used_for_context'] = in_array($similarity_item['document_id'], $used_document_ids);
5009 - }
5010 -
5011 - // Store top 10 for testing panel
5012 - $this->last_similarity_analysis['top_matches'] = array_slice($all_similarities, 0, 10);
5013 - $this->last_similarity_analysis['total_checked'] = $total_checked;
5014 -
5015 - // Initialize final content
5016 - $content = '';
5017 - $matches_used = 0;
5018 - $total_chunks_used = 0;
5019 - $max_total_chunks = isset($current_options['rag_chunks_limit']) ? intval($current_options['rag_chunks_limit']) : 15;
5020 - if ($max_total_chunks < 8) $max_total_chunks = 8;
5021 - if ($max_total_chunks > 20) $max_total_chunks = 20;
5022 - $max_chunks_per_source = 5; // Cap per individual source to limit token usage
5023 -
5024 - // Check if citation links are enabled (default to 'on' for backwards compatibility)
5025 - // Use fresh options to ensure we get the latest setting value
5026 - $fresh_options = get_option('mxchat_options', []);
5027 - $citation_links_enabled = isset($fresh_options['citation_links_toggle']) ? ($fresh_options['citation_links_toggle'] === 'on') : true;
5028 -
5029 - // Build content from top sources
5030 - foreach ($top_urls as $group_key => $group) {
5031 - $source_url = $group['source_url']; // Use actual source_url, not the group key
5032 -
5033 - // Stop if we've hit the total chunk limit
5034 - if ($total_chunks_used >= $max_total_chunks) {
5035 - break;
5036 - }
5037 -
5038 - $full_text = '';
5039 - $chunks_in_this_source = 1; // Default for non-chunked content
5040 -
5041 - if ($group['is_chunked']) {
5042 - // Calculate how many chunks we can still use (respect both total and per-source caps)
5043 - $chunks_remaining = min($max_chunks_per_source, $max_total_chunks - $total_chunks_used);
5044 -
5045 - // Fetch chunks for this URL with limit
5046 - $full_text = $this->reassemble_chunks_from_wordpress($source_url, $chunks_remaining, $chunks_in_this_source);
5047 -
5048 - // If fetching all chunks fails, fall back to matched chunks
5049 - if (empty($full_text)) {
5050 - // Sort matched chunks by index and concatenate
5051 - usort($group['chunks'], function($a, $b) {
5052 - return $a['chunk_index'] <=> $b['chunk_index'];
5053 - });
5054 -
5055 - $chunk_texts = array();
5056 - $chunks_in_this_source = 0;
5057 - foreach ($group['chunks'] as $chunk) {
5058 - if ($total_chunks_used + $chunks_in_this_source >= $max_total_chunks) {
5059 - break;
5060 - }
5061 - $chunk_texts[] = $chunk['text'];
5062 - $chunks_in_this_source++;
5063 - }
5064 - $full_text = implode("\n\n", $chunk_texts);
5065 - }
5066 - } else {
5067 - $full_text = $group['single_text'];
5068 - $chunks_in_this_source = 1;
5069 - }
5070 -
5071 - if (!empty($full_text)) {
5072 - // Strip URLs from content if citation links are disabled
5073 - if (!$citation_links_enabled) {
5074 - $full_text = preg_replace('#\bhttps?://[^\s<>"\']+#i', '', $full_text);
5075 - $full_text = preg_replace('/\s+/', ' ', trim($full_text)); // Clean up extra spaces
5076 - }
5077 -
5078 - // Use numbered reference for URL-based entries, plain info label for manual entries
5079 - if (!empty($source_url) && $source_url !== '#') {
5080 - $matches_used++;
5081 - $content .= "## Reference " . $matches_used . " ##\n";
5082 - $content .= $full_text . "\n\n";
5083 -
5084 - // Only include citation URLs if citation links are enabled
5085 - if ($citation_links_enabled) {
5086 - $valid_urls[] = $source_url;
5087 - $content .= "URL: " . $source_url . "\n\n";
5088 - }
5089 - } else {
5090 - // Manual entry — no reference number, no citation
5091 - $content .= "## Information ##\n";
5092 - $content .= $full_text . "\n\n";
5093 - }
5094 -
5095 - // Extract any URLs from the text content itself (only if citation links enabled)
5096 - if ($citation_links_enabled) {
5097 - preg_match_all(
5098 - '#\bhttps?://[^\s<>"\']+#i',
5099 - $full_text,
5100 - $content_urls
5101 - );
5102 - if (!empty($content_urls[0])) {
5103 - $valid_urls = array_merge($valid_urls, $content_urls[0]);
5104 - }
5105 - }
5106 -
5107 - $total_chunks_used += $chunks_in_this_source;
5108 - }
5109 - }
5110 -
5111 - // NEW: Store unique valid URLs for validation
5112 - $this->current_valid_urls = array_unique($valid_urls);
5113 -
5114 - // Store sources and chunks counts for testing/transcript display
5115 - $this->last_similarity_analysis['sources_used'] = $matches_used;
5116 - $this->last_similarity_analysis['total_chunks_used'] = $total_chunks_used;
5117 -
5118 - // Allow add-ons to act on similarity results (e.g. WooCommerce product card display)
5119 - do_action('mxchat_similarity_results', $this->last_similarity_analysis['top_matches'], $bot_id);
5120 -
5121 - // Add response guidelines
5122 - if (empty($top_urls)) {
5123 - $content = "No reference information was found for this query.\n\n";
5124 - } else {
5125 - // Build response guidelines based on citation links setting
5126 - $content .= "\n## Response Guidelines ##\n" .
5127 - "You are an AI Chatbot. Answer naturally and helpfully using only the information from the references above. " .
5128 - "Be conversational and friendly, but never mention your knowledge base or training data. " .
5129 - "If you don't have specific information or are uncertain about any details, it's always " .
5130 - "better to honestly say you don't know rather than making up or guessing at answers. " .
5131 - "When information is incomplete, let them know you are unsure.\n\n";
5132 -
5133 - // Only add hyperlink instructions if citation links are enabled
5134 - if ($citation_links_enabled) {
5135 - $content .= "CRITICAL: When creating hyperlinks, always use proper markdown format with descriptive text: " .
5136 - "[descriptive text](url). NEVER use empty brackets like [](url). The text in brackets must describe what the link is about. " .
5137 - "Only cite references that have a URL. Do not cite or add source labels to Information sections that have no URL.";
5138 - } else {
5139 - $content .= "IMPORTANT: Do not include any citation links, source URLs, or hyperlinks in your responses. " .
5140 - "Simply provide helpful answers based on the reference information without citing sources.";
5141 - }
5142 - }
5143 -
5144 - return trim($content);
5145 -}
5146 -
5147 -/**
5148 - * Fetch and reassemble chunks for a URL from WordPress database
5149 - *
5150 - * @param string $source_url The source URL to fetch chunks for
5151 - * @param int $max_chunks Maximum number of chunks to return (0 = unlimited)
5152 - * @param int &$chunk_count Reference to store the actual number of chunks returned
5153 - * @return string Reassembled content from chunks
5154 - */
5155 -private function reassemble_chunks_from_wordpress($source_url, $max_chunks = 0, &$chunk_count = 0) {
5156 - global $wpdb;
5157 - $table = $wpdb->prefix . 'mxchat_system_prompt_content';
5158 -
5159 - // Fetch all rows with this source_url
5160 - $rows = $wpdb->get_results($wpdb->prepare(
5161 - "SELECT article_content FROM {$table}
5162 - WHERE source_url = %s
5163 - ORDER BY id ASC",
5164 - $source_url
5165 - ));
5166 -
5167 - if (empty($rows)) {
5168 - $chunk_count = 0;
5169 - return '';
5170 - }
5171 -
5172 - // Parse and sort chunks by index
5173 - $chunks = array();
5174 - foreach ($rows as $row) {
5175 - $parsed = MxChat_Chunker::parse_stored_chunk($row->article_content);
5176 -
5177 - if ($parsed['is_chunked']) {
5178 - $chunk_index = $parsed['metadata']['chunk_index'] ?? 0;
5179 - $chunks[$chunk_index] = $parsed['text'];
5180 - } else {
5181 - // Non-chunked content - just return it
5182 - $chunks[] = $parsed['text'];
5183 - }
5184 - }
5185 -
5186 - // Sort by chunk index
5187 - ksort($chunks);
5188 -
5189 - // Apply chunk limit if specified
5190 - if ($max_chunks > 0 && count($chunks) > $max_chunks) {
5191 - $chunks = array_slice($chunks, 0, $max_chunks, true);
5192 - }
5193 -
5194 - // Store actual chunk count
5195 - $chunk_count = count($chunks);
5196 -
5197 - // Reassemble content
5198 - return implode("\n\n", $chunks);
5199 -}
5200 -
5201 -private function find_relevant_content_pinecone($user_embedding, $bot_id = 'default', $bot_config = null) {
5202 - global $wpdb;
5203 -
5204 - //error_log("MXCHAT DEBUG: find_relevant_content_pinecone called");
5205 - //error_log(" - bot_id: " . $bot_id);
5206 - //error_log(" - user_embedding is array: " . (is_array($user_embedding) ? 'yes' : 'no'));
5207 - //error_log(" - user_embedding count: " . (is_array($user_embedding) ? count($user_embedding) : 'N/A'));
5208 -
5209 - // Use bot-specific config or fall back to default
5210 - if ($bot_config === null) {
5211 - $bot_config = $this->get_bot_pinecone_config($bot_id);
5212 - }
5213 -
5214 - $api_key = $bot_config['api_key'] ?? '';
5215 - $host = $bot_config['host'] ?? '';
5216 - $namespace = $bot_config['namespace'] ?? '';
5217 -
5218 - //error_log("MXCHAT DEBUG: Pinecone query parameters:");
5219 - //error_log(" - API Key: " . (empty($api_key) ? 'EMPTY - ERROR!' : 'Present (length: ' . strlen($api_key) . ')'));
5220 - //error_log(" - Host: " . (empty($host) ? 'EMPTY - ERROR!' : $host));
5221 - //error_log(" - Namespace: " . (empty($namespace) ? 'EMPTY (will use default)' : $namespace));
5222 -
5223 - // Initialize similarity analysis storage
5224 - $this->last_similarity_analysis = [
5225 - 'knowledge_base_type' => 'Pinecone',
5226 - 'bot_id' => $bot_id,
5227 - 'namespace' => $namespace,
5228 - 'top_matches' => [],
5229 - 'threshold_used' => 0,
5230 - 'total_checked' => 0
5231 - ];
5232 -
5233 - // NEW: Initialize valid URLs array
5234 - $valid_urls = [];
5235 -
5236 - if (empty($host) || empty($api_key)) {
5237 - //error_log("MXCHAT DEBUG ERROR: Missing Pinecone host or API key!");
5238 - //error_log(" - Host empty: " . (empty($host) ? 'YES' : 'NO'));
5239 - //error_log(" - API key empty: " . (empty($api_key) ? 'YES' : 'NO'));
5240 - // Store empty array for valid URLs since we can't proceed
5241 - $this->current_valid_urls = [];
5242 - return '';
5243 - }
5244 -
5245 - // Get knowledge manager instance for role checking
5246 - $knowledge_manager = MxChat_Knowledge_Manager::get_instance();
5247 -
5248 - // Get the similarity threshold from the bot options or main options
5249 - $bot_options = $this->get_bot_options($bot_id);
5250 - $current_options = !empty($bot_options) ? $bot_options : get_option('mxchat_options', []);
5251 -
5252 - $similarity_threshold = isset($current_options['similarity_threshold'])
5253 - ? ((int) $current_options['similarity_threshold']) / 100
5254 - : 0.35;
5255 -
5256 - $this->last_similarity_analysis['threshold_used'] = $similarity_threshold;
5257 -
5258 - // Prepare the query request for Pinecone
5259 - $api_endpoint = "https://{$host}/query";
5260 -
5261 - $request_body = array(
5262 - 'vector' => $user_embedding,
5263 - 'topK' => 50, // Increased for chunked content grouping - need more candidates to find top N unique URLs
5264 - 'includeMetadata' => true,
5265 - 'includeValues' => true
5266 - );
5267 -
5268 - // Add namespace if specified for this bot
5269 - if (!empty($namespace)) {
5270 - $request_body['namespace'] = $namespace;
5271 - }
5272 -
5273 - //error_log("MXCHAT DEBUG: About to call Pinecone API");
5274 - //error_log(" - Endpoint: " . $api_endpoint);
5275 - //error_log(" - Namespace in request: " . (!empty($namespace) ? $namespace : 'NOT SET'));
5276 -
5277 - $response = wp_remote_post($api_endpoint, array(
5278 - 'headers' => array(
5279 - 'Api-Key' => $api_key,
5280 - 'accept' => 'application/json',
5281 - 'content-type' => 'application/json'
5282 - ),
5283 - 'body' => wp_json_encode($request_body),
5284 - 'timeout' => 30
5285 - ));
5286 -
5287 - if (is_wp_error($response)) {
5288 - //error_log("MXCHAT DEBUG ERROR: WP Error in Pinecone request: " . $response->get_error_message());
5289 - // Store empty array for valid URLs
5290 - $this->current_valid_urls = [];
5291 - return '';
5292 - }
5293 -
5294 - $response_code = wp_remote_retrieve_response_code($response);
5295 - //error_log("MXCHAT DEBUG: Pinecone response code: " . $response_code);
5296 -
5297 - if ($response_code !== 200) {
5298 - $response_body = wp_remote_retrieve_body($response);
5299 - //error_log("MXCHAT DEBUG ERROR: Pinecone API error response: " . substr($response_body, 0, 500));
5300 - // Store empty array for valid URLs
5301 - $this->current_valid_urls = [];
5302 - return '';
5303 - }
5304 -
5305 - // ADD DETAILED DEBUG SECTION HERE
5306 - $response_body = wp_remote_retrieve_body($response);
5307 - //error_log("MXCHAT DEBUG: Raw Pinecone response length: " . strlen($response_body));
5308 -
5309 - $results = json_decode($response_body, true);
5310 -
5311 - if (json_last_error() !== JSON_ERROR_NONE) {
5312 - //error_log("MXCHAT DEBUG ERROR: JSON decode error: " . json_last_error_msg());
5313 - //error_log("MXCHAT DEBUG: First 500 chars of response: " . substr($response_body, 0, 500));
5314 - // Store empty array for valid URLs
5315 - $this->current_valid_urls = [];
5316 - return '';
5317 - }
5318 -
5319 - //error_log("MXCHAT DEBUG: Pinecone response structure:");
5320 - //error_log(" - Has 'matches' key: " . (isset($results['matches']) ? 'yes' : 'no'));
5321 - //error_log(" - Has 'namespace' key: " . (isset($results['namespace']) ? 'yes (' . $results['namespace'] . ')' : 'no'));
5322 -
5323 - if (empty($results['matches'])) {
5324 - //error_log("MXCHAT DEBUG: No matches found in Pinecone response");
5325 - //error_log("MXCHAT DEBUG: Response keys: " . implode(', ', array_keys($results)));
5326 - // Store empty array for valid URLs
5327 - $this->current_valid_urls = [];
5328 - return '';
5329 - }
5330 -
5331 - //error_log("MXCHAT DEBUG: Found " . count($results['matches']) . " matches in Pinecone");
5332 -
5333 - // Log first match details for debugging
5334 - if (!empty($results['matches'][0])) {
5335 - $first_match = $results['matches'][0];
5336 - //error_log("MXCHAT DEBUG: First match details:");
5337 - //error_log(" - Score: " . ($first_match['score'] ?? 'no score'));
5338 - //error_log(" - Has metadata: " . (isset($first_match['metadata']) ? 'yes' : 'no'));
5339 - if (isset($first_match['metadata'])) {
5340 - //error_log(" - Metadata keys: " . implode(', ', array_keys($first_match['metadata'])));
5341 - }
5342 - }
5343 -
5344 - // Initialize the final content
5345 - $content = '';
5346 - $matches_used = 0;
5347 - $matches_used_for_context = [];
5348 - $total_chunks_used = 0;
5349 - $max_total_chunks = isset($current_options['rag_chunks_limit']) ? intval($current_options['rag_chunks_limit']) : 15;
5350 - if ($max_total_chunks < 8) $max_total_chunks = 8;
5351 - if ($max_total_chunks > 20) $max_total_chunks = 20;
5352 - $max_chunks_per_source = 5; // Cap per individual source to limit token usage
5353 -
5354 - // Check if citation links are enabled (default to 'on' for backwards compatibility)
5355 - // Use fresh options to ensure we get the latest setting value
5356 - $fresh_options = get_option('mxchat_options', []);
5357 - $citation_links_enabled = isset($fresh_options['citation_links_toggle']) ? ($fresh_options['citation_links_toggle'] === 'on') : true;
5358 -
5359 - // NEW CHUNKING LOGIC: Group results by source_url for chunk reassembly
5360 - $url_groups = array();
5361 -
5362 - foreach ($results['matches'] as $index => $match) {
5363 - // Skip if similarity is below threshold
5364 - if ($match['score'] < $similarity_threshold) {
5365 - continue;
5366 - }
5367 -
5368 - $metadata = $match['metadata'] ?? array();
5369 - $source_url = $metadata['source_url'] ?? '';
5370 - $match_id = $match['id'] ?? '';
5371 -
5372 - // LAZY ROLE CHECK: Only check role for content we're actually considering
5373 - $role_restriction = $this->get_single_vector_role($match_id, $metadata);
5374 - $has_access = $knowledge_manager->mxchat_user_has_content_access($role_restriction);
5375 -
5376 - // Skip if user doesn't have access
5377 - if (!$has_access) {
5378 - continue;
5379 - }
5380 -
5381 - // Use a unique key for manual entries without a source URL
5382 - $group_key = !empty($source_url) ? $source_url : '_manual_' . $match_id;
5383 -
5384 - // Group by source URL (or unique key for manual entries)
5385 - if (!isset($url_groups[$group_key])) {
5386 - $url_groups[$group_key] = array(
5387 - 'source_url' => $source_url,
5388 - 'best_score' => 0,
5389 - 'is_chunked' => isset($metadata['is_chunked']) && $metadata['is_chunked'],
5390 - 'chunks' => array(),
5391 - 'single_text' => ''
5392 - );
5393 - }
5394 -
5395 - // Track best score for this group
5396 - if ($match['score'] > $url_groups[$group_key]['best_score']) {
5397 - $url_groups[$group_key]['best_score'] = $match['score'];
5398 - }
5399 -
5400 - // Store chunk info or single text
5401 - if ($url_groups[$group_key]['is_chunked']) {
5402 - $url_groups[$group_key]['chunks'][] = array(
5403 - 'id' => $match_id,
5404 - 'score' => $match['score'],
5405 - 'chunk_index' => $metadata['chunk_index'] ?? 0,
5406 - 'text' => $metadata['text'] ?? ''
5407 - );
5408 - } else {
5409 - // Non-chunked content - just store the text
5410 - $url_groups[$group_key]['single_text'] = $metadata['text'] ?? '';
5411 - $url_groups[$group_key]['single_id'] = $match_id;
5412 - }
5413 - }
5414 -
5415 - // Sort URL groups by best score (highest first)
5416 - uasort($url_groups, function($a, $b) {
5417 - return $b['best_score'] <=> $a['best_score'];
5418 - });
5419 -
5420 - // Get RAG sources limit from options (default 6, min 3, max 10)
5421 - $rag_sources_limit = isset($current_options['rag_sources_limit']) ? intval($current_options['rag_sources_limit']) : 3;
5422 - if ($rag_sources_limit < 3) $rag_sources_limit = 3;
5423 - if ($rag_sources_limit > 10) $rag_sources_limit = 10;
5424 -
5425 - // Take top N unique URLs based on user setting
5426 - $top_urls = array_slice($url_groups, 0, $rag_sources_limit, true);
5427 -
5428 - // Track which match IDs are actually used for context
5429 - foreach ($top_urls as $group) {
5430 - if ($group['is_chunked']) {
5431 - foreach ($group['chunks'] as $chunk) {
5432 - $matches_used_for_context[] = $chunk['id'];
5433 - }
5434 - } elseif (!empty($group['single_id'])) {
5435 - $matches_used_for_context[] = $group['single_id'];
5436 - }
5437 - }
5438 -
5439 - // Build content from top sources
5440 - foreach ($top_urls as $group_key => $group) {
5441 - $source_url = $group['source_url']; // Use actual source_url, not the group key
5442 -
5443 - // Stop if we've hit the total chunk limit
5444 - if ($total_chunks_used >= $max_total_chunks) {
5445 - break;
5446 - }
5447 -
5448 - $full_text = '';
5449 - $chunks_in_this_source = 1; // Default for non-chunked content
5450 -
5451 - if ($group['is_chunked']) {
5452 - // Calculate how many chunks we can still use (respect both total and per-source caps)
5453 - $chunks_remaining = min($max_chunks_per_source, $max_total_chunks - $total_chunks_used);
5454 -
5455 - // Fetch chunks for this URL with limit
5456 - $full_text = $this->reassemble_chunks_from_pinecone($source_url, $bot_config, $chunks_remaining, $chunks_in_this_source);
5457 -
5458 - // If fetching all chunks fails, fall back to matched chunks
5459 - if (empty($full_text)) {
5460 - // Sort matched chunks by index and concatenate
5461 - usort($group['chunks'], function($a, $b) {
5462 - return $a['chunk_index'] <=> $b['chunk_index'];
5463 - });
5464 -
5465 - $chunk_texts = array();
5466 - $chunks_in_this_source = 0;
5467 - foreach ($group['chunks'] as $chunk) {
5468 - if ($total_chunks_used + $chunks_in_this_source >= $max_total_chunks) {
5469 - break;
5470 - }
5471 - $chunk_texts[] = $chunk['text'];
5472 - $chunks_in_this_source++;
5473 - }
5474 - $full_text = implode("\n\n", $chunk_texts);
5475 - }
5476 - } else {
5477 - $full_text = $group['single_text'];
5478 - $chunks_in_this_source = 1;
5479 - }
5480 -
5481 - if (!empty($full_text)) {
5482 - // Strip URLs from content if citation links are disabled
5483 - if (!$citation_links_enabled) {
5484 - $full_text = preg_replace('#\bhttps?://[^\s<>"\']+#i', '', $full_text);
5485 - $full_text = preg_replace('/\s+/', ' ', trim($full_text)); // Clean up extra spaces
5486 - }
5487 -
5488 - // Use numbered reference for URL-based entries, plain info label for manual entries
5489 - if (!empty($source_url) && $source_url !== '#') {
5490 - $matches_used++;
5491 - $content .= "## Reference " . $matches_used . " ##\n";
5492 - $content .= $full_text . "\n\n";
5493 -
5494 - // Only include citation URLs if citation links are enabled
5495 - if ($citation_links_enabled) {
5496 - $valid_urls[] = $source_url;
5497 - $content .= "URL: " . $source_url . "\n\n";
5498 - }
5499 - } else {
5500 - // Manual entry — no reference number, no citation
5501 - $content .= "## Information ##\n";
5502 - $content .= $full_text . "\n\n";
5503 - }
5504 -
5505 - // Extract any URLs from the text content itself (only if citation links enabled)
5506 - if ($citation_links_enabled) {
5507 - preg_match_all(
5508 - '#\bhttps?://[^\s<>"\']+#i',
5509 - $full_text,
5510 - $content_urls
5511 - );
5512 - if (!empty($content_urls[0])) {
5513 - $valid_urls = array_merge($valid_urls, $content_urls[0]);
5514 - }
5515 - }
5516 -
5517 - $total_chunks_used += $chunks_in_this_source;
5518 - }
5519 - }
5520 -
5521 - // Process ALL matches for testing data (top 10) - with role checking for testing display
5522 - $all_matches = [];
5523 - foreach ($results['matches'] as $index => $match) {
5524 - if ($index >= 10) break; // Limit to top 10 for testing
5525 -
5526 - $match_id = $match['id'] ?? '';
5527 -
5528 - // Check role access for testing display (use cache if available)
5529 - $role_restriction = $this->get_single_vector_role($match_id, $match['metadata']);
5530 - $has_access = $knowledge_manager->mxchat_user_has_content_access($role_restriction);
5531 -
5532 - $source_display = '';
5533 - if (!empty($match['metadata']['source_url'])) {
5534 - $source_display = $match['metadata']['source_url'];
5535 - } else {
5536 - $content_preview = strip_tags($match['metadata']['text'] ?? '');
5537 - $content_preview = preg_replace('/\s+/', ' ', $content_preview);
5538 - $source_display = substr(trim($content_preview), 0, 50) . '...';
5539 - }
5540 -
5541 - $match_id_for_display = $match['id'] ?? $index;
5542 -
5543 - // Check for chunk metadata in Pinecone
5544 - $is_chunk = isset($match['metadata']['is_chunked']) && $match['metadata']['is_chunked'];
5545 - $chunk_index = isset($match['metadata']['chunk_index']) ? intval($match['metadata']['chunk_index']) : null;
5546 - $total_chunks = isset($match['metadata']['total_chunks']) ? intval($match['metadata']['total_chunks']) : null;
5547 -
5548 - // Also detect chunk from vector ID pattern: {hash}_chunk_{index}
5549 - if (!$is_chunk && MxChat_Chunker::is_chunk_vector_id($match_id_for_display)) {
5550 - $is_chunk = true;
5551 - }
5552 -
5553 - $all_matches[] = [
5554 - 'document_id' => $match_id_for_display,
5555 - 'similarity' => $match['score'],
5556 - 'similarity_percentage' => round($match['score'] * 100, 2),
5557 - 'above_threshold' => $match['score'] >= $similarity_threshold,
5558 - 'source_display' => $source_display,
5559 - 'content_preview' => substr(strip_tags($match['metadata']['text'] ?? ''), 0, 100) . '...',
5560 - 'used_for_context' => in_array($match_id_for_display, $matches_used_for_context),
5561 - 'role_restriction' => $role_restriction,
5562 - 'has_access' => $has_access,
5563 - 'filtered_out' => !$has_access,
5564 - 'is_chunk' => $is_chunk,
5565 - 'chunk_index' => $chunk_index,
5566 - 'total_chunks' => $total_chunks
5567 - ];
5568 - }
5569 -
5570 - // Store for testing panel
5571 - $this->last_similarity_analysis['top_matches'] = $all_matches;
5572 - $this->last_similarity_analysis['total_checked'] = count($results['matches']);
5573 - $this->last_similarity_analysis['sources_used'] = $matches_used;
5574 - $this->last_similarity_analysis['total_chunks_used'] = $total_chunks_used;
5575 -
5576 - // NEW: Store unique valid URLs for validation
5577 - $this->current_valid_urls = array_unique($valid_urls);
5578 -
5579 - // Allow add-ons to act on similarity results (e.g. WooCommerce product card display)
5580 - do_action('mxchat_similarity_results', $this->last_similarity_analysis['top_matches'], $bot_id);
5581 -
5582 - // Add response guidelines
5583 - if ($matches_used === 0) {
5584 - $content = "No reference information was found for this query.\n\n";
5585 - } else {
5586 - // Build response guidelines based on citation links setting
5587 - $content .= "\n## Response Guidelines ##\n" .
5588 - "You are an AI Chatbot. Answer naturally and helpfully using only the information from the references above. " .
5589 - "Be conversational and friendly, but never mention your knowledge base or training data. " .
5590 - "If you don't have specific information or are uncertain about any details, it's always " .
5591 - "better to honestly say you don't know rather than making up or guessing at answers. " .
5592 - "When information is incomplete, let them know you are unsure.\n\n";
5593 -
5594 - // Only add hyperlink instructions if citation links are enabled
5595 - if ($citation_links_enabled) {
5596 - $content .= "CRITICAL: When creating hyperlinks, always use proper markdown format with descriptive text: " .
5597 - "[descriptive text](url). NEVER use empty brackets like [](url). The text in brackets must describe what the link is about. " .
5598 - "Only cite references that have a URL. Do not cite or add source labels to Information sections that have no URL.";
5599 - } else {
5600 - $content .= "IMPORTANT: Do not include any citation links, source URLs, or hyperlinks in your responses. " .
5601 - "Simply provide helpful answers based on the reference information without citing sources.";
5602 - }
5603 - }
5604 -
5605 - return trim($content);
5606 -}
5607 -
5608 -/**
5609 - * Get role restriction for a single vector (with caching)
5610 - */
5611 -private function get_single_vector_role($vector_id, $metadata = array()) {
5612 - global $wpdb;
5613 -
5614 - if (empty($vector_id)) {
5615 - return 'public';
5616 - }
5617 -
5618 - // Check cache first
5619 - $cache_key = 'mxchat_vector_role_' . $vector_id;
5620 - $cached_role = wp_cache_get($cache_key, 'mxchat_vector_roles');
5621 -
5622 - if ($cached_role !== false) {
5623 - return $cached_role;
5624 - }
5625 -
5626 - $role_restriction = 'public';
5627 -
5628 - // First try Pinecone metadata
5629 - if (!empty($metadata['role_restriction'])) {
5630 - $role_restriction = $metadata['role_restriction'];
5631 - } else {
5632 - // Check WordPress table for user-modified roles
5633 - $roles_table = $wpdb->prefix . 'mxchat_pinecone_roles';
5634 - $stored_role = $wpdb->get_var($wpdb->prepare(
5635 - "SELECT role_restriction FROM {$roles_table} WHERE vector_id = %s",
5636 - $vector_id
5637 - ));
5638 -
5639 - if ($stored_role) {
5640 - $role_restriction = $stored_role;
5641 - }
5642 - }
5643 -
5644 - // Cache individual role for 1 hour
5645 - wp_cache_set($cache_key, $role_restriction, 'mxchat_vector_roles', 3600);
5646 -
5647 - return $role_restriction;
5648 -}
5649 -
5650 -/**
5651 - * Fetch and reassemble all chunks for a URL from Pinecone
5652 - *
5653 - * @param string $source_url The source URL to fetch chunks for
5654 - * @param array $bot_config Bot-specific Pinecone configuration
5655 - * @return string Reassembled content from all chunks
5656 - */
5657 -private function reassemble_chunks_from_pinecone($source_url, $bot_config, $max_chunks = 0, &$chunk_count = 0) {
5658 - $api_key = $bot_config['api_key'] ?? '';
5659 - $host = $bot_config['host'] ?? '';
5660 - $namespace = $bot_config['namespace'] ?? '';
5661 -
5662 - if (empty($host) || empty($api_key)) {
5663 - $chunk_count = 0;
5664 - return '';
5665 - }
5666 -
5667 - $base_hash = md5($source_url);
5668 -
5669 - // Use Pinecone list API to find all chunk vectors with this prefix
5670 - $list_url = "https://{$host}/vectors/list";
5671 -
5672 - // Limit to max_chunks if specified, otherwise fetch up to 100
5673 - $fetch_limit = ($max_chunks > 0 && $max_chunks < 100) ? $max_chunks : 100;
5674 -
5675 - $list_body = array(
5676 - 'prefix' => $base_hash . '_chunk_',
5677 - 'limit' => $fetch_limit
5678 - );
5679 -
5680 - if (!empty($namespace)) {
5681 - $list_body['namespace'] = $namespace;
5682 - }
5683 -
5684 - $list_response = wp_remote_post($list_url, array(
5685 - 'headers' => array(
5686 - 'Api-Key' => $api_key,
5687 - 'accept' => 'application/json',
5688 - 'content-type' => 'application/json'
5689 - ),
5690 - 'body' => wp_json_encode($list_body),
5691 - 'timeout' => 30
5692 - ));
5693 -
5694 - if (is_wp_error($list_response)) {
5695 - //error_log('[MXCHAT-CHUNK] List API error: ' . $list_response->get_error_message());
5696 - return '';
5697 - }
5698 -
5699 - $list_data = json_decode(wp_remote_retrieve_body($list_response), true);
5700 -
5701 - if (empty($list_data['vectors'])) {
5702 - //error_log('[MXCHAT-CHUNK] No chunk vectors found for URL: ' . $source_url);
5703 - return '';
5704 - }
5705 -
5706 - // Extract vector IDs
5707 - $vector_ids = array();
5708 - foreach ($list_data['vectors'] as $vector) {
5709 - if (isset($vector['id'])) {
5710 - $vector_ids[] = $vector['id'];
5711 - }
5712 - }
5713 -
5714 - if (empty($vector_ids)) {
5715 - return '';
5716 - }
5717 -
5718 - // Fetch all chunk content
5719 - $fetch_url = "https://{$host}/vectors/fetch";
5720 -
5721 - $fetch_body = array(
5722 - 'ids' => $vector_ids
5723 - );
5724 -
5725 - if (!empty($namespace)) {
5726 - $fetch_body['namespace'] = $namespace;
5727 - }
5728 -
5729 - $fetch_response = wp_remote_post($fetch_url, array(
5730 - 'headers' => array(
5731 - 'Api-Key' => $api_key,
5732 - 'accept' => 'application/json',
5733 - 'content-type' => 'application/json'
5734 - ),
5735 - 'body' => wp_json_encode($fetch_body),
5736 - 'timeout' => 30
5737 - ));
5738 -
5739 - if (is_wp_error($fetch_response)) {
5740 - //error_log('[MXCHAT-CHUNK] Fetch API error: ' . $fetch_response->get_error_message());
5741 - return '';
5742 - }
5743 -
5744 - $fetch_data = json_decode(wp_remote_retrieve_body($fetch_response), true);
5745 -
5746 - if (empty($fetch_data['vectors'])) {
5747 - return '';
5748 - }
5749 -
5750 - // Sort chunks by index and reassemble
5751 - $chunks = array();
5752 - foreach ($fetch_data['vectors'] as $id => $vector) {
5753 - $metadata = $vector['metadata'] ?? array();
5754 - $chunk_index = $metadata['chunk_index'] ?? 0;
5755 - $text = $metadata['text'] ?? '';
5756 -
5757 - // Store chunk with its index
5758 - $chunks[$chunk_index] = $text;
5759 - }
5760 -
5761 - // Sort by chunk index
5762 - ksort($chunks);
5763 -
5764 - // Apply chunk limit if specified
5765 - if ($max_chunks > 0 && count($chunks) > $max_chunks) {
5766 - $chunks = array_slice($chunks, 0, $max_chunks, true);
5767 - }
5768 -
5769 - // Store actual chunk count
5770 - $chunk_count = count($chunks);
5771 -
5772 - // Reassemble content
5773 - return implode("\n\n", $chunks);
5774 -}
5775 -
5776 -/**
5777 - * Search for relevant content using OpenAI Vector Store (File Search)
5778 - *
5779 - * @param string $user_query The user's query text
5780 - * @param string $bot_id The bot ID
5781 - * @param array $vectorstore_config Vector Store configuration
5782 - * @return string Formatted context string with references
5783 - */
5784 -private function find_relevant_content_openai_vectorstore($user_query, $bot_id = 'default', $vectorstore_config = array()) {
5785 - //error_log("MXCHAT DEBUG: find_relevant_content_openai_vectorstore called");
5786 - //error_log(" - bot_id: " . $bot_id);
5787 - //error_log(" - user_query length: " . strlen($user_query));
5788 -
5789 - // Get OpenAI API key
5790 - $mxchat_options = get_option('mxchat_options', array());
5791 - $api_key = $mxchat_options['api_key'] ?? '';
5792 -
5793 - // Reset vectorstore error tracking
5794 - $this->last_vectorstore_error = null;
5795 -
5796 - if (empty($api_key)) {
5797 - //error_log("MXCHAT DEBUG ERROR: OpenAI API key not configured");
5798 - $this->last_vectorstore_error = 'Vector Store search failed: OpenAI API key is not configured.';
5799 - $this->current_valid_urls = [];
5800 - return '';
5801 - }
5802 -
5803 - // Get Vector Store configuration
5804 - if (empty($vectorstore_config)) {
5805 - $vectorstore_config = $this->get_bot_vectorstore_config($bot_id);
5806 - }
5807 -
5808 - $vectorstore_ids_string = $vectorstore_config['vectorstore_ids'] ?? '';
5809 - $max_results = $vectorstore_config['max_results'] ?? 5;
5810 -
5811 - if (empty($vectorstore_ids_string)) {
5812 - //error_log("MXCHAT DEBUG ERROR: No Vector Store IDs configured");
5813 - $this->last_vectorstore_error = 'Vector Store search failed: No Vector Store IDs are configured for this bot.';
5814 - $this->current_valid_urls = [];
5815 - return '';
5816 - }
5817 -
5818 - // Parse Vector Store IDs
5819 - $vectorstore_ids = array_map('trim', explode(',', $vectorstore_ids_string));
5820 - $vectorstore_ids = array_filter($vectorstore_ids); // Remove empty values
5821 -
5822 - //error_log("MXCHAT DEBUG: Vector Store IDs: " . implode(', ', $vectorstore_ids));
5823 - //error_log("MXCHAT DEBUG: Max results: " . $max_results);
5824 -
5825 - // Initialize similarity analysis storage
5826 - $this->last_similarity_analysis = [
5827 - 'knowledge_base_type' => 'OpenAI Vector Store',
5828 - 'bot_id' => $bot_id,
5829 - 'vectorstore_ids' => $vectorstore_ids,
5830 - 'top_matches' => [],
5831 - 'threshold_used' => 0,
5832 - 'total_checked' => 0
5833 - ];
5834 -
5835 - $valid_urls = [];
5836 -
5837 - // Get the selected model
5838 - $bot_options = $this->get_bot_options($bot_id);
5839 - $current_options = !empty($bot_options) ? $bot_options : $mxchat_options;
5840 - $selected_model = $current_options['model'] ?? 'gpt-5.1-chat-latest';
5841 -
5842 - // Verify it's an OpenAI model
5843 - if (!$this->is_openai_chat_model($selected_model)) {
5844 - //error_log("MXCHAT DEBUG ERROR: Vector Store search requires OpenAI model. Current: " . $selected_model);
5845 - $this->last_vectorstore_error = 'Vector Store search requires an OpenAI model. Current model: ' . $selected_model;
5846 - $this->current_valid_urls = [];
5847 - return '';
5848 - }
5849 -
5850 - // Use OpenAI Responses API with file_search tool
5851 - $request_body = array(
5852 - 'model' => $selected_model,
5853 - 'input' => $user_query,
5854 - 'tools' => array(
5855 - array(
5856 - 'type' => 'file_search',
5857 - 'vector_store_ids' => $vectorstore_ids,
5858 - 'max_num_results' => intval($max_results)
5859 - )
5860 - ),
5861 - 'include' => array('output[*].file_search_call.search_results')
5862 - );
5863 -
5864 - //error_log("MXCHAT VECTORSTORE: ========== REQUEST START ==========");
5865 - //error_log("MXCHAT VECTORSTORE: Model: " . $selected_model);
5866 - //error_log("MXCHAT VECTORSTORE: Query: " . substr($user_query, 0, 200));
5867 - //error_log("MXCHAT VECTORSTORE: Vector Store IDs: " . implode(', ', $vectorstore_ids));
5868 - //error_log("MXCHAT VECTORSTORE: Max Results: " . $max_results);
5869 - //error_log("MXCHAT VECTORSTORE: Request body: " . wp_json_encode($request_body));
5870 -
5871 - $response = wp_remote_post('https://api.openai.com/v1/responses', array(
5872 - 'headers' => array(
5873 - 'Authorization' => 'Bearer ' . $api_key,
5874 - 'Content-Type' => 'application/json'
5875 - ),
5876 - 'body' => wp_json_encode($request_body),
5877 - 'timeout' => 60
5878 - ));
5879 -
5880 - if (is_wp_error($response)) {
5881 - //error_log("MXCHAT VECTORSTORE ERROR: WP Error: " . $response->get_error_message());
5882 - $this->last_vectorstore_error = 'Vector Store API request failed: ' . $response->get_error_message();
5883 - $this->current_valid_urls = [];
5884 - return '';
5885 - }
5886 -
5887 - $response_code = wp_remote_retrieve_response_code($response);
5888 - //error_log("MXCHAT VECTORSTORE: Response code: " . $response_code);
5889 -
5890 - $response_body = wp_remote_retrieve_body($response);
5891 - //error_log("MXCHAT VECTORSTORE: Raw response (first 2000 chars): " . substr($response_body, 0, 2000));
5892 -
5893 - if ($response_code !== 200) {
5894 - //error_log("MXCHAT VECTORSTORE ERROR: API error response: " . $response_body);
5895 - $api_error_detail = '';
5896 - $decoded_error = json_decode($response_body, true);
5897 - if (isset($decoded_error['error']['message'])) {
5898 - $api_error_detail = $decoded_error['error']['message'];
5899 - }
5900 - $this->last_vectorstore_error = 'Vector Store API returned HTTP ' . $response_code . ($api_error_detail ? ': ' . $api_error_detail : '');
5901 - $this->current_valid_urls = [];
5902 - return '';
5903 - }
5904 - $result = json_decode($response_body, true);
5905 -
5906 - if (json_last_error() !== JSON_ERROR_NONE) {
5907 - //error_log("MXCHAT VECTORSTORE ERROR: JSON decode error: " . json_last_error_msg());
5908 - $this->last_vectorstore_error = 'Vector Store response could not be parsed: ' . json_last_error_msg();
5909 - $this->current_valid_urls = [];
5910 - return '';
5911 - }
5912 -
5913 - // Debug: Log the structure of the result
5914 - //error_log("MXCHAT VECTORSTORE: Result keys: " . implode(', ', array_keys($result)));
5915 - if (isset($result['output'])) {
5916 - //error_log("MXCHAT VECTORSTORE: Output count: " . count($result['output']));
5917 - foreach ($result['output'] as $idx => $out) {
5918 - //error_log("MXCHAT VECTORSTORE: Output[$idx] type: " . ($out['type'] ?? 'unknown'));
5919 - //error_log("MXCHAT VECTORSTORE: Output[$idx] keys: " . implode(', ', array_keys($out)));
5920 - }
5921 - } else {
5922 - //error_log("MXCHAT VECTORSTORE: No 'output' key in result!");
5923 - }
5924 -
5925 - // Extract file search results from the response
5926 - $content = '';
5927 - $matches_used = 0;
5928 - $all_matches = [];
5929 -
5930 - // The Responses API returns output array with tool results
5931 - if (isset($result['output']) && is_array($result['output'])) {
5932 - foreach ($result['output'] as $output_item) {
5933 - // Look for file_search_call results
5934 - if (isset($output_item['type']) && $output_item['type'] === 'file_search_call') {
5935 - //error_log("MXCHAT VECTORSTORE: Found file_search_call output item");
5936 - //error_log("MXCHAT VECTORSTORE: file_search_call keys: " . implode(', ', array_keys($output_item)));
5937 -
5938 - // Check for search_results in the output item directly
5939 - $search_results = $output_item['search_results'] ?? $output_item['results'] ?? [];
5940 - //error_log("MXCHAT VECTORSTORE: Search results count: " . count($search_results));
5941 -
5942 - if (empty($search_results)) {
5943 - //error_log("MXCHAT VECTORSTORE: No search results found in file_search_call");
5944 - //error_log("MXCHAT VECTORSTORE: file_search_call content: " . wp_json_encode($output_item));
5945 - }
5946 -
5947 - foreach ($search_results as $index => $search_result) {
5948 - $filename = $search_result['filename'] ?? '';
5949 - $score = $search_result['score'] ?? 0;
5950 - $text_content = '';
5951 -
5952 - // Extract text content from the result
5953 - // The text can be directly on the result OR nested under content array
5954 - if (isset($search_result['text']) && !empty($search_result['text'])) {
5955 - // Direct text field (OpenAI's actual format)
5956 - $text_content = $search_result['text'];
5957 - //error_log("MXCHAT VECTORSTORE: Found text directly on result[$index], length: " . strlen($text_content));
5958 - } elseif (isset($search_result['content']) && is_array($search_result['content'])) {
5959 - // Nested content array format
5960 - foreach ($search_result['content'] as $content_item) {
5961 - if (isset($content_item['text'])) {
5962 - $text_content .= $content_item['text'] . "\n";
5963 - }
5964 - }
5965 - //error_log("MXCHAT VECTORSTORE: Found text in content array for result[$index], length: " . strlen($text_content));
5966 - } else {
5967 - //error_log("MXCHAT VECTORSTORE: No text found for result[$index]. Keys: " . implode(', ', array_keys($search_result)));
5968 - }
5969 -
5970 - if (!empty($text_content)) {
5971 - $content .= "## Reference " . ($matches_used + 1) . " ##\n";
5972 - $content .= trim($text_content) . "\n\n";
5973 -
5974 - if (!empty($filename)) {
5975 - $content .= "Source: " . $filename . "\n\n";
5976 - }
5977 -
5978 - // Extract URLs from content
5979 - preg_match_all(
5980 - '#\bhttps?://[^\s<>"\']+#i',
5981 - $text_content,
5982 - $content_urls
5983 - );
5984 - if (!empty($content_urls[0])) {
5985 - $valid_urls = array_merge($valid_urls, $content_urls[0]);
5986 - }
5987 -
5988 - $matches_used++;
5989 - }
5990 -
5991 - // Store for similarity analysis
5992 - $all_matches[] = [
5993 - 'document_id' => $filename ?: ('result_' . $index),
5994 - 'similarity' => $score,
5995 - 'similarity_percentage' => round($score * 100, 2),
5996 - 'above_threshold' => true,
5997 - 'source_display' => $filename,
5998 - 'content_preview' => substr(strip_tags($text_content), 0, 100) . '...',
5999 - 'used_for_context' => true,
6000 - 'role_restriction' => 'public',
6001 - 'has_access' => true,
6002 - 'filtered_out' => false
6003 - ];
6004 - }
6005 - }
6006 -
6007 - // Also check for message content with annotations (citations)
6008 - if (isset($output_item['type']) && $output_item['type'] === 'message') {
6009 - if (isset($output_item['content']) && is_array($output_item['content'])) {
6010 - foreach ($output_item['content'] as $content_block) {
6011 - if (isset($content_block['annotations']) && is_array($content_block['annotations'])) {
6012 - foreach ($content_block['annotations'] as $annotation) {
6013 - if (isset($annotation['filename'])) {
6014 - $filename = $annotation['filename'];
6015 - $score = $annotation['score'] ?? 0;
6016 - $text_content = '';
6017 -
6018 - if (isset($annotation['content']) && is_array($annotation['content'])) {
6019 - foreach ($annotation['content'] as $ann_content) {
6020 - if (isset($ann_content['text'])) {
6021 - $text_content .= $ann_content['text'] . "\n";
6022 - }
6023 - }
6024 - }
6025 -
6026 - if (!empty($text_content) && $matches_used < $max_results) {
6027 - $content .= "## Reference " . ($matches_used + 1) . " ##\n";
6028 - $content .= trim($text_content) . "\n\n";
6029 - $content .= "Source: " . $filename . "\n\n";
6030 -
6031 - preg_match_all(
6032 - '#\bhttps?://[^\s<>"\']+#i',
6033 - $text_content,
6034 - $content_urls
6035 - );
6036 - if (!empty($content_urls[0])) {
6037 - $valid_urls = array_merge($valid_urls, $content_urls[0]);
6038 - }
6039 -
6040 - $matches_used++;
6041 -
6042 - $all_matches[] = [
6043 - 'document_id' => $filename,
6044 - 'similarity' => $score,
6045 - 'similarity_percentage' => round($score * 100, 2),
6046 - 'above_threshold' => true,
6047 - 'source_display' => $filename,
6048 - 'content_preview' => substr(strip_tags($text_content), 0, 100) . '...',
6049 - 'used_for_context' => true,
6050 - 'role_restriction' => 'public',
6051 - 'has_access' => true,
6052 - 'filtered_out' => false
6053 - ];
6054 - }
6055 - }
6056 - }
6057 - }
6058 - }
6059 - }
6060 - }
6061 - }
6062 - }
6063 -
6064 - // Store for testing panel
6065 - $this->last_similarity_analysis['top_matches'] = $all_matches;
6066 - $this->last_similarity_analysis['total_checked'] = count($all_matches);
6067 -
6068 - // Store unique valid URLs for validation
6069 - $this->current_valid_urls = array_unique($valid_urls);
6070 -
6071 - // Allow add-ons to act on similarity results (e.g. WooCommerce product card display)
6072 - do_action('mxchat_similarity_results', $this->last_similarity_analysis['top_matches'], $bot_id);
6073 -
6074 - //error_log("MXCHAT VECTORSTORE: ========== SEARCH COMPLETE ==========");
6075 - //error_log("MXCHAT VECTORSTORE: Matches used: " . $matches_used);
6076 - //error_log("MXCHAT VECTORSTORE: All matches count: " . count($all_matches));
6077 - //error_log("MXCHAT VECTORSTORE: Content length: " . strlen($content));
6078 - if ($matches_used > 0) {
6079 - //error_log("MXCHAT VECTORSTORE: Content preview: " . substr($content, 0, 500));
6080 - }
6081 -
6082 - // Check if citation links are enabled
6083 - $citation_links_enabled = ($mxchat_options['citation_links_toggle'] ?? 'on') === 'on';
6084 -
6085 - // Add response guidelines
6086 - if ($matches_used === 0) {
6087 - //error_log("MXCHAT VECTORSTORE: No matches found - returning empty reference message");
6088 - $content = "No reference information was found for this query.\n\n";
6089 - } else {
6090 - // Build response guidelines based on citation links setting
6091 - $content .= "\n## Response Guidelines ##\n" .
6092 - "You are an AI Chatbot. Answer naturally and helpfully using only the information from the references above. " .
6093 - "Be conversational and friendly, but never mention your knowledge base or training data. " .
6094 - "If you don't have specific information or are uncertain about any details, it's always " .
6095 - "better to honestly say you don't know rather than making up or guessing at answers. " .
6096 - "When information is incomplete, let them know you are unsure.\n\n";
6097 -
6098 - // Only add hyperlink instructions if citation links are enabled
6099 - if ($citation_links_enabled) {
6100 - $content .= "CRITICAL: When creating hyperlinks, always use proper markdown format with descriptive text: " .
6101 - "[descriptive text](url). NEVER use empty brackets like [](url). The text in brackets must describe what the link is about.";
6102 - } else {
6103 - $content .= "IMPORTANT: Do not include any citation links, source URLs, or hyperlinks in your responses. " .
6104 - "Simply provide helpful answers based on the reference information without citing sources.";
6105 - }
6106 - }
6107 -
6108 - //error_log("MXCHAT DEBUG: Vector Store search complete. Matches used: " . $matches_used);
6109 -
6110 - return trim($content);
6111 -}
6112 -
6113 -/**
6114 - * Check if the given model is an OpenAI chat model
6115 - *
6116 - * @param string $model The model ID
6117 - * @return bool True if it's an OpenAI model
6118 - */
6119 -private function is_openai_chat_model($model) {
6120 - $openai_prefixes = array('gpt-', 'o1-', 'o3-');
6121 - foreach ($openai_prefixes as $prefix) {
6122 - if (strpos($model, $prefix) === 0) {
6123 - return true;
6124 - }
6125 - }
6126 - return false;
6127 -}
6128 -
6129 -/**
6130 - * Get bot-specific Vector Store configuration
6131 - *
6132 - * @param string $bot_id The bot ID
6133 - * @return array Configuration array
6134 - */
6135 -private function get_bot_vectorstore_config($bot_id = 'default') {
6136 - $vectorstore_options = get_option('mxchat_openai_vectorstore_options', array());
6137 -
6138 - // Default global settings
6139 - $default_config = array(
6140 - 'use_vectorstore' => ($vectorstore_options['mxchat_use_openai_vectorstore'] ?? '0') === '1',
6141 - 'vectorstore_ids' => $vectorstore_options['mxchat_vectorstore_ids'] ?? '',
6142 - 'max_results' => $vectorstore_options['mxchat_vectorstore_max_results'] ?? 5
6143 - );
6144 -
6145 - // Allow multi-bot plugin to override with bot-specific settings
6146 - $bot_config = apply_filters('mxchat_get_bot_vectorstore_config', $default_config, $bot_id);
6147 -
6148 - // Preserve max_results from global settings if not set in bot config
6149 - if (!isset($bot_config['max_results'])) {
6150 - $bot_config['max_results'] = $default_config['max_results'];
6151 - }
6152 -
6153 - return $bot_config;
6154 -}
6155 -
6156 -private function mxchat_find_relevant_products($user_embedding) {
6157 - //error_log('MXChat Vector Search: Starting product search...');
6158 -
6159 - // Retrieve the add-on settings from the database
6160 - $addon_options = get_option('mxchat_pinecone_addon_options', array());
6161 -
6162 - // Determine whether Pinecone is enabled
6163 - $use_pinecone = (isset($addon_options['mxchat_use_pinecone']) && $addon_options['mxchat_use_pinecone'] === '1') ? 1 : 0;
6164 -
6165 - //error_log('Pinecone enabled flag: ' . $use_pinecone);
6166 -
6167 - if ($use_pinecone === 1) {
6168 - //error_log('MXChat Vector Search: Using Pinecone database for products');
6169 - return $this->find_relevant_products_pinecone($user_embedding);
6170 - } else {
6171 - //error_log('MXChat Vector Search: Using WordPress database for products');
6172 - return $this->find_relevant_products_wordpress($user_embedding);
6173 - }
6174 -}
6175 -private function find_relevant_products_wordpress($user_embedding) {
6176 - global $wpdb;
6177 - $system_prompt_table = $wpdb->prefix . 'mxchat_system_prompt_content';
6178 -
6179 - if (!is_array($user_embedding)) {
6180 - return '';
6181 - }
6182 -
6183 - // Streaming top-K pass: scan rows in small batches, keep only the top 3
6184 - // results above the similarity threshold. Peak memory is bounded by
6185 - // $batch_size embedding rows plus a 3-element top list.
6186 - $batch_size = 250;
6187 - $similarity_threshold = 0.85;
6188 - $top_k = 3;
6189 - $top_results = [];
6190 - $offset = 0;
6191 -
6192 - do {
6193 - $batch = $wpdb->get_results($wpdb->prepare(
6194 - "SELECT id, embedding_vector
6195 - FROM {$system_prompt_table}
6196 - LIMIT %d OFFSET %d",
6197 - $batch_size,
6198 - $offset
6199 - ));
6200 -
6201 - if (empty($batch)) {
6202 - break;
6203 - }
6204 -
6205 - foreach ($batch as $row) {
6206 - $database_embedding = $row->embedding_vector
6207 - ? unserialize($row->embedding_vector, ['allowed_classes' => false])
6208 - : null;
6209 -
6210 - if (!is_array($database_embedding)) {
6211 - unset($database_embedding);
6212 - continue;
6213 - }
6214 -
6215 - $similarity = $this->mxchat_calculate_cosine_similarity($user_embedding, $database_embedding);
6216 - unset($database_embedding);
6217 -
6218 - if ($similarity < $similarity_threshold) {
6219 - continue;
6220 - }
6221 -
6222 - // Insert into bounded top-K (kept sorted descending)
6223 - if (count($top_results) < $top_k) {
6224 - $top_results[] = ['id' => $row->id, 'similarity' => $similarity];
6225 - usort($top_results, function ($a, $b) {
6226 - return $b['similarity'] <=> $a['similarity'];
6227 - });
6228 - } elseif ($similarity > $top_results[$top_k - 1]['similarity']) {
6229 - $top_results[$top_k - 1] = ['id' => $row->id, 'similarity' => $similarity];
6230 - usort($top_results, function ($a, $b) {
6231 - return $b['similarity'] <=> $a['similarity'];
6232 - });
6233 - }
6234 - }
6235 -
6236 - unset($batch);
6237 - $offset += $batch_size;
6238 - } while (true);
6239 -
6240 - if (empty($top_results)) {
6241 - return '';
6242 - }
6243 -
6244 - $content = '';
6245 - foreach ($top_results as $result) {
6246 - $chunk_content = $this->fetch_content_with_product_links($result['id']);
6247 - $content .= $chunk_content . "\n\n";
6248 - }
6249 -
6250 - return trim($content);
6251 -}
6252 -
6253 -
6254 -private function find_relevant_products_pinecone($user_embedding) {
6255 - //error_log('Starting Pinecone product search...');
6256 -
6257 - $options = get_option('mxchat_pinecone_addon_options', array());
6258 - $api_key = $options['mxchat_pinecone_api_key'] ?? '';
6259 - $host = $options['mxchat_pinecone_host'] ?? '';
6260 -
6261 - if (empty($host) || empty($api_key)) {
6262 - //error_log('Pinecone credentials not properly configured for product search');
6263 - return '';
6264 - }
6265 -
6266 - $similarity_threshold = 0.85;
6267 - $api_endpoint = "https://{$host}/query";
6268 -
6269 - $request_body = array(
6270 - 'vector' => $user_embedding,
6271 - 'topK' => 5,
6272 - 'includeMetadata' => true,
6273 - 'includeValues' => true,
6274 - 'filter' => array(
6275 - 'type' => 'product'
6276 - )
6277 - );
6278 -
6279 - //error_log('Sending request to Pinecone with body: ' . wp_json_encode($request_body));
6280 -
6281 - $response = wp_remote_post($api_endpoint, array(
6282 - 'headers' => array(
6283 - 'Api-Key' => $api_key,
6284 - 'accept' => 'application/json',
6285 - 'content-type' => 'application/json'
6286 - ),
6287 - 'body' => wp_json_encode($request_body),
6288 - 'timeout' => 30
6289 - ));
6290 -
6291 - if (is_wp_error($response)) {
6292 - //error_log('Pinecone product query error: ' . $response->get_error_message());
6293 - return '';
6294 - }
6295 -
6296 - $response_code = wp_remote_retrieve_response_code($response);
6297 - //error_log('Pinecone response code: ' . $response_code);
6298 -
6299 - if ($response_code !== 200) {
6300 - //error_log('Pinecone API error during product search: ' . wp_remote_retrieve_body($response));
6301 - return '';
6302 - }
6303 -
6304 - $results = json_decode(wp_remote_retrieve_body($response), true);
6305 - //error_log('Pinecone raw response: ' . wp_remote_retrieve_body($response));
6306 -
6307 - if (empty($results['matches'])) {
6308 - //error_log('No matches found in Pinecone response');
6309 - return '';
6310 - }
6311 -
6312 - $content = '';
6313 - foreach ($results['matches'] as $match) {
6314 - if ($match['score'] < $similarity_threshold) {
6315 - //error_log("Match below threshold: " . $match['score']);
6316 - continue;
6317 - }
6318 -
6319 - if (!empty($match['metadata']['text'])) {
6320 - $content .= $match['metadata']['text'];
6321 - if (!empty($match['metadata']['source_url'])) {
6322 - $content .= "\n\nFor more details, check out this product: " . esc_url($match['metadata']['source_url']);
6323 - }
6324 - $content .= "\n\n";
6325 - }
6326 - }
6327 -
6328 - return trim($content);
6329 -}
6330 -
6331 -
6332 -private function fetch_content_with_product_links($most_relevant_id) {
6333 - global $wpdb;
6334 - $system_prompt_table = $wpdb->prefix . 'mxchat_system_prompt_content';
6335 -
6336 - // Fetch the article content and associated product URL
6337 - $query = $wpdb->prepare("SELECT article_content, source_url FROM {$system_prompt_table} WHERE id = %d", $most_relevant_id);
6338 - $result = $wpdb->get_row($query);
6339 -
6340 - if ($result) {
6341 - // Append the product link to the content if available
6342 - $content = $result->article_content;
6343 - if (!empty($result->source_url)) {
6344 - $content .= "\n\nFor more details, check out this product: " . esc_url($result->source_url);
6345 - }
6346 - return $content;
6347 - }
6348 -
6349 - return null;
6350 -}
6351 -
6352 -/**
6353 - * Get system instructions for a specific bot or default
6354 - * Checks for multi-bot add-on and uses bot-specific instructions if available
6355 - * Automatically strips URLs if citation links are disabled
6356 - * Replaces {visitor_name} placeholder with actual visitor name if available
6357 - *
6358 - * @param string $bot_id The bot ID to get instructions for
6359 - * @param string $session_id Optional session ID to lookup visitor name
6360 - */
6361 -private function get_system_instructions($bot_id = 'default', $session_id = '') {
6362 - $instructions = '';
6363 -
6364 - // Check if multi-bot add-on is active
6365 - if (class_exists('MxChat_Multi_Bot_Core_Manager') && $bot_id !== 'default') {
6366 - // Get bot-specific options from multi-bot add-on
6367 - $bot_options = apply_filters('mxchat_get_bot_options', array(), $bot_id);
6368 -
6369 - // If bot has custom system instructions, use those
6370 - if (!empty($bot_options['system_prompt_instructions'])) {
6371 - $instructions = $bot_options['system_prompt_instructions'];
6372 - }
6373 - }
6374 -
6375 - // Fall back to default system instructions
6376 - if (empty($instructions)) {
6377 - $instructions = isset($this->options['system_prompt_instructions']) ? $this->options['system_prompt_instructions'] : '';
6378 - }
6379 -
6380 - // Check if citation links are disabled - if so, strip URLs from instructions
6381 - $fresh_options = get_option('mxchat_options', []);
6382 - $citation_links_enabled = isset($fresh_options['citation_links_toggle']) ? ($fresh_options['citation_links_toggle'] === 'on') : true;
6383 -
6384 - if (!$citation_links_enabled && !empty($instructions)) {
6385 - $instructions = preg_replace('#\bhttps?://[^\s<>"\']+#i', '', $instructions);
6386 - $instructions = preg_replace('/\s+/', ' ', trim($instructions)); // Clean up extra spaces
6387 - }
6388 -
6389 - // Replace {visitor_name} placeholder with actual visitor name if available
6390 - if (!empty($instructions) && !empty($session_id) && stripos($instructions, '{visitor_name}') !== false) {
6391 - $name_option_key = "mxchat_name_{$session_id}";
6392 - $visitor_name = get_option($name_option_key, '');
6393 -
6394 - if (!empty($visitor_name)) {
6395 - $instructions = str_ireplace('{visitor_name}', sanitize_text_field($visitor_name), $instructions);
6396 - } else {
6397 - // Remove placeholder if no name is available
6398 - $instructions = str_ireplace('{visitor_name}', '', $instructions);
6399 - $instructions = preg_replace('/\s{2,}/', ' ', trim($instructions)); // Clean up extra spaces
6400 - }
6401 - }
6402 -
6403 - // Allow developers to filter system instructions and process shortcodes
6404 - $instructions = apply_filters('mxchat_system_instructions', $instructions, $bot_id, $session_id);
6405 - $instructions = do_shortcode($instructions);
6406 -
6407 - return $instructions;
6408 -}
6409 -/**
6410 - * Get the current bot ID from session or request context
6411 - */
6412 -private function get_current_bot_id($session_id = '') {
6413 - // First, check if bot_id is passed in the current request
6414 - if (isset($_POST['bot_id']) && !empty($_POST['bot_id'])) {
6415 - return sanitize_key($_POST['bot_id']);
6416 - }
6417 -
6418 - // If not in POST, try to get it from session data
6419 - if (!empty($session_id)) {
6420 - $bot_id = get_option("mxchat_session_bot_{$session_id}", '');
6421 - if (!empty($bot_id)) {
6422 - return $bot_id;
6423 - }
6424 - }
6425 -
6426 - // Fall back to default
6427 - return 'default';
6428 -}
6429 -private function mxchat_generate_response($relevant_content, $api_key, $xai_api_key, $claude_api_key, $deepseek_api_key, $gemini_api_key, $openrouter_api_key, $conversation_history, $streaming = false, $session_id = '', $testing_data = null, $selected_model = 'gpt-5.1-chat-latest') {
6430 - try {
6431 - if (!$relevant_content) {
6432 - $error_response = [
6433 - 'error' => esc_html__("I couldn't find relevant information on that topic.", 'mxchat'),
6434 - 'error_code' => 'no_relevant_content'
6435 - ];
6436 -
6437 - if ($testing_data !== null) {
6438 - $error_response['testing_data'] = $testing_data;
6439 - }
6440 -
6441 - return $error_response;
6442 - }
6443 -
6444 - if (!is_array($conversation_history)) {
6445 - $conversation_history = array();
6446 - }
6447 -
6448 - // Check if this is an OpenRouter model
6449 - if ($selected_model === 'openrouter') {
6450 - // Get the actual OpenRouter model from options
6451 - $openrouter_selected_model = $this->options['openrouter_selected_model'] ?? '';
6452 -
6453 - if (empty($openrouter_selected_model)) {
6454 - $error_response = [
6455 - 'error' => esc_html__('No OpenRouter model selected. Please select a model in settings.', 'mxchat'),
6456 - 'error_code' => 'no_openrouter_model_selected'
6457 - ];
6458 - if ($testing_data !== null) {
6459 - $error_response['testing_data'] = $testing_data;
6460 - }
6461 - return $error_response;
6462 - }
6463 -
6464 - if (empty($openrouter_api_key)) {
6465 - $error_response = [
6466 - 'error' => esc_html__('OpenRouter API key is not configured', 'mxchat'),
6467 - 'error_code' => 'missing_openrouter_api_key'
6468 - ];
6469 - if ($testing_data !== null) {
6470 - $error_response['testing_data'] = $testing_data;
6471 - }
6472 - return $error_response;
6473 - }
6474 -
6475 - if ($streaming) {
6476 - return $this->mxchat_generate_response_openrouter_stream(
6477 - $openrouter_selected_model,
6478 - $openrouter_api_key,
6479 - $conversation_history,
6480 - $relevant_content,
6481 - $session_id,
6482 - $testing_data
6483 - );
6484 - } else {
6485 - $response = $this->mxchat_generate_response_openrouter(
6486 - $openrouter_selected_model,
6487 - $openrouter_api_key,
6488 - $conversation_history,
6489 - $relevant_content
6490 - );
6491 - }
6492 -
6493 - if (is_array($response) && isset($response['error'])) {
6494 - if ($testing_data !== null) {
6495 - $response['testing_data'] = $testing_data;
6496 - }
6497 - return $response;
6498 - }
6499 -
6500 - return $response;
6501 - }
6502 -
6503 - // Extract model prefix to determine the provider
6504 - $model_parts = explode('-', $selected_model);
6505 - $provider = strtolower($model_parts[0]);
6506 -
6507 - // Handle model selection based on provider prefix
6508 - switch ($provider) {
6509 - case 'gemini':
6510 - if (empty($gemini_api_key)) {
6511 - $error_response = [
6512 - 'error' => esc_html__('Google Gemini API key is not configured', 'mxchat'),
6513 - 'error_code' => 'missing_gemini_api_key'
6514 - ];
6515 - if ($testing_data !== null) {
6516 - $error_response['testing_data'] = $testing_data;
6517 - }
6518 - return $error_response;
6519 - }
6520 - $response = $this->mxchat_generate_response_gemini(
6521 - $selected_model,
6522 - $gemini_api_key,
6523 - $conversation_history,
6524 - $relevant_content
6525 - );
6526 - break;
6527 -
6528 - case 'claude':
6529 - if (empty($claude_api_key)) {
6530 - $error_response = [
6531 - 'error' => esc_html__('Claude API key is not configured', 'mxchat'),
6532 - 'error_code' => 'missing_claude_api_key'
6533 - ];
6534 - if ($testing_data !== null) {
6535 - $error_response['testing_data'] = $testing_data;
6536 - }
6537 - return $error_response;
6538 - }
6539 - if ($streaming) {
6540 - return $this->mxchat_generate_response_claude_stream(
6541 - $selected_model,
6542 - $claude_api_key,
6543 - $conversation_history,
6544 - $relevant_content,
6545 - $session_id,
6546 - $testing_data
6547 - );
6548 - } else {
6549 - $response = $this->mxchat_generate_response_claude(
6550 - $selected_model,
6551 - $claude_api_key,
6552 - $conversation_history,
6553 - $relevant_content
6554 - );
6555 - }
6556 - break;
6557 -
6558 - case 'grok':
6559 - if (empty($xai_api_key)) {
6560 - $error_response = [
6561 - 'error' => esc_html__('X.AI API key is not configured', 'mxchat'),
6562 - 'error_code' => 'missing_xai_api_key'
6563 - ];
6564 - if ($testing_data !== null) {
6565 - $error_response['testing_data'] = $testing_data;
6566 - }
6567 - return $error_response;
6568 - }
6569 - if ($streaming) {
6570 - return $this->mxchat_generate_response_xai_stream(
6571 - $selected_model,
6572 - $xai_api_key,
6573 - $conversation_history,
6574 - $relevant_content,
6575 - $session_id,
6576 - $testing_data
6577 - );
6578 - } else {
6579 - $response = $this->mxchat_generate_response_xai(
6580 - $selected_model,
6581 - $xai_api_key,
6582 - $conversation_history,
6583 - $relevant_content
6584 - );
6585 - }
6586 - break;
6587 -
6588 - case 'deepseek':
6589 - if (empty($deepseek_api_key)) {
6590 - $error_response = [
6591 - 'error' => esc_html__('DeepSeek API key is not configured', 'mxchat'),
6592 - 'error_code' => 'missing_deepseek_api_key'
6593 - ];
6594 - if ($testing_data !== null) {
6595 - $error_response['testing_data'] = $testing_data;
6596 - }
6597 - return $error_response;
6598 - }
6599 - if ($streaming) {
6600 - return $this->mxchat_generate_response_deepseek_stream(
6601 - $selected_model,
6602 - $deepseek_api_key,
6603 - $conversation_history,
6604 - $relevant_content,
6605 - $session_id,
6606 - $testing_data
6607 - );
6608 - } else {
6609 - $response = $this->mxchat_generate_response_deepseek(
6610 - $selected_model,
6611 - $deepseek_api_key,
6612 - $conversation_history,
6613 - $relevant_content
6614 - );
6615 - }
6616 - break;
6617 -
6618 - case 'gpt':
6619 - case 'o1':
6620 - if (empty($api_key)) {
6621 - $error_response = [
6622 - 'error' => esc_html__('OpenAI API key is not configured', 'mxchat'),
6623 - 'error_code' => 'missing_openai_api_key'
6624 - ];
6625 - if ($testing_data !== null) {
6626 - $error_response['testing_data'] = $testing_data;
6627 - }
6628 - return $error_response;
6629 - }
6630 -
6631 - // Check if web search is enabled for this OpenAI model
6632 - $web_search_enabled = isset($this->options['enable_web_search']) && $this->options['enable_web_search'] === 'on';
6633 - // Models that don't support web search
6634 - $unsupported_web_search_models = array('gpt-4.1-nano');
6635 - $model_supports_web_search = !in_array($selected_model, $unsupported_web_search_models);
6636 -
6637 - if ($web_search_enabled && $model_supports_web_search) {
6638 - // Use Responses API (required for some models, or when web search is enabled)
6639 - return $this->mxchat_generate_response_openai_web_search(
6640 - $selected_model,
6641 - $api_key,
6642 - $conversation_history,
6643 - $relevant_content,
6644 - $session_id,
6645 - $testing_data,
6646 - $streaming
6647 - );
6648 - } elseif ($streaming) {
6649 - return $this->mxchat_generate_response_openai_stream(
6650 - $selected_model,
6651 - $api_key,
6652 - $conversation_history,
6653 - $relevant_content,
6654 - $session_id,
6655 - $testing_data
6656 - );
6657 - } else {
6658 - $response = $this->mxchat_generate_response_openai(
6659 - $selected_model,
6660 - $api_key,
6661 - $conversation_history,
6662 - $relevant_content
6663 - );
6664 - }
6665 - break;
6666 -
6667 - default:
6668 - if (empty($api_key)) {
6669 - $error_response = [
6670 - 'error' => esc_html__('OpenAI API key is not configured', 'mxchat'),
6671 - 'error_code' => 'missing_openai_api_key'
6672 - ];
6673 - if ($testing_data !== null) {
6674 - $error_response['testing_data'] = $testing_data;
6675 - }
6676 - return $error_response;
6677 - }
6678 -
6679 - // Check if web search is enabled (default case also handles OpenAI models)
6680 - $web_search_enabled = isset($this->options['enable_web_search']) && $this->options['enable_web_search'] === 'on';
6681 - $unsupported_web_search_models = array('gpt-4.1-nano');
6682 - $model_supports_web_search = !in_array($selected_model, $unsupported_web_search_models);
6683 -
6684 - if ($web_search_enabled && $model_supports_web_search) {
6685 - return $this->mxchat_generate_response_openai_web_search(
6686 - $selected_model,
6687 - $api_key,
6688 - $conversation_history,
6689 - $relevant_content,
6690 - $session_id,
6691 - $testing_data,
6692 - $streaming
6693 - );
6694 - } elseif ($streaming) {
6695 - return $this->mxchat_generate_response_openai_stream(
6696 - $selected_model,
6697 - $api_key,
6698 - $conversation_history,
6699 - $relevant_content,
6700 - $session_id,
6701 - $testing_data
6702 - );
6703 - } else {
6704 - $response = $this->mxchat_generate_response_openai(
6705 - $selected_model,
6706 - $api_key,
6707 - $conversation_history,
6708 - $relevant_content
6709 - );
6710 - }
6711 - break;
6712 - }
6713 -
6714 - if (is_array($response) && isset($response['error'])) {
6715 - if ($testing_data !== null) {
6716 - $response['testing_data'] = $testing_data;
6717 - }
6718 - return $response;
6719 - }
6720 -
6721 - return $response;
6722 -
6723 - } catch (Exception $e) {
6724 - $error_response = [
6725 - 'error' => sprintf(esc_html__('An error occurred: %s', 'mxchat'), esc_html($e->getMessage())),
6726 - 'error_code' => 'system_exception',
6727 - 'exception_details' => $e->getMessage()
6728 - ];
6729 -
6730 - if ($testing_data !== null) {
6731 - $error_response['testing_data'] = $testing_data;
6732 - }
6733 -
6734 - return $error_response;
6735 - }
6736 -}
6737 -private function mxchat_generate_response_openrouter_stream($selected_model, $openrouter_api_key, $conversation_history, $relevant_content, $session_id, $testing_data = null) {
6738 - try {
6739 - $bot_id = $this->get_current_bot_id($session_id);
6740 - $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
6741 -
6742 - if (!is_array($conversation_history)) {
6743 - $conversation_history = array();
6744 - }
6745 -
6746 - $formatted_conversation = array();
6747 -
6748 - $formatted_conversation[] = array(
6749 - 'role' => 'system',
6750 - 'content' => $system_prompt_instructions . " " . $relevant_content
6751 - );
6752 -
6753 - foreach ($conversation_history as $message) {
6754 - if (is_array($message) && isset($message['role']) && isset($message['content'])) {
6755 - $role = $message['role'];
6756 - if ($role === 'bot' || $role === 'agent') {
6757 - $role = 'assistant';
6758 - }
6759 - if (!in_array($role, ['system', 'assistant', 'user'])) {
6760 - $role = 'user';
6761 - }
6762 - $formatted_conversation[] = array(
6763 - 'role' => $role,
6764 - 'content' => $message['content']
6765 - );
6766 - }
6767 - }
6768 -
6769 - if (headers_sent() || !function_exists('curl_init')) {
6770 - $regular_response = $this->mxchat_generate_response_openrouter(
6771 - $selected_model,
6772 - $openrouter_api_key,
6773 - $conversation_history,
6774 - $relevant_content
6775 - );
6776 -
6777 - // Save bot response to transcript
6778 - if (!empty($regular_response) && !empty($session_id)) {
6779 - $this->mxchat_save_chat_message($session_id, 'bot', $regular_response);
6780 - }
6781 -
6782 - $response_data = [
6783 - 'text' => $regular_response,
6784 - 'html' => '',
6785 - 'session_id' => $session_id
6786 - ];
6787 -
6788 - if ($testing_data !== null) {
6789 - $response_data['testing_data'] = $testing_data;
6790 - }
6791 -
6792 - header('Content-Type: application/json');
6793 - echo json_encode($response_data);
6794 - return true;
6795 - }
6796 -
6797 - $body = json_encode([
6798 - 'model' => $selected_model,
6799 - 'messages' => $formatted_conversation,
6800 - 'temperature' => 1,
6801 - 'stream' => true
6802 - ]);
6803 -
6804 - // Setup streaming headers now that we know we're actually streaming
6805 - $this->setup_streaming_headers();
6806 -
6807 - $ch = curl_init();
6808 - curl_setopt($ch, CURLOPT_URL, 'https://openrouter.ai/api/v1/chat/completions');
6809 - curl_setopt($ch, CURLOPT_RETURNTRANSFER, false);
6810 - curl_setopt($ch, CURLOPT_POST, true);
6811 - curl_setopt($ch, CURLOPT_POSTFIELDS, $body);
6812 - curl_setopt($ch, CURLOPT_HTTPHEADER, array(
6813 - 'Content-Type: application/json',
6814 - 'Authorization: Bearer ' . $openrouter_api_key,
6815 - 'HTTP-Referer: ' . home_url(),
6816 - 'X-Title: ' . get_bloginfo('name')
6817 - ));
6818 - curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
6819 - curl_setopt($ch, CURLOPT_TIMEOUT, 60);
6820 -
6821 - $full_response = '';
6822 - $stream_started = false;
6823 - $buffer = '';
6824 -
6825 - curl_setopt($ch, CURLOPT_WRITEFUNCTION, function($ch, $data) use (&$full_response, &$stream_started, &$buffer, $testing_data) {
6826 - if (!$stream_started && $testing_data !== null) {
6827 - echo "data: " . json_encode(['testing_data' => $testing_data]) . "\n\n";
6828 - flush();
6829 - $stream_started = true;
6830 - }
6831 -
6832 - $buffer .= $data;
6833 - $lines = explode("\n", $buffer);
6834 - $buffer = array_pop($lines);
6835 -
6836 - foreach ($lines as $line) {
6837 - if (trim($line) === '') {
6838 - continue;
6839 - }
6840 -
6841 - if (strpos($line, 'data: ') !== 0) {
6842 - continue;
6843 - }
6844 -
6845 - $json_str = substr($line, 6);
6846 -
6847 - if (trim($json_str) === '[DONE]') {
6848 - echo "data: [DONE]\n\n";
6849 - flush();
6850 - continue;
6851 - }
6852 -
6853 - $json = json_decode(trim($json_str), true);
6854 - if ($json && isset($json['choices'][0]['delta']['content'])) {
6855 - $content = $json['choices'][0]['delta']['content'];
6856 - $full_response .= $content;
6857 -
6858 - echo "data: " . json_encode(['content' => $content]) . "\n\n";
6859 - flush();
6860 - }
6861 - }
6862 -
6863 - return strlen($data);
6864 - });
6865 -
6866 - $response = curl_exec($ch);
6867 - $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
6868 -
6869 - if (curl_errno($ch) || $http_code !== 200) {
6870 - curl_close($ch);
6871 -
6872 - $regular_response = $this->mxchat_generate_response_openrouter(
6873 - $selected_model,
6874 - $openrouter_api_key,
6875 - $conversation_history,
6876 - $relevant_content
6877 - );
6878 -
6879 - $response_data = [
6880 - 'text' => $regular_response,
6881 - 'html' => '',
6882 - 'session_id' => $session_id
6883 - ];
6884 -
6885 - if ($testing_data !== null) {
6886 - $response_data['testing_data'] = $testing_data;
6887 - }
6888 -
6889 - header('Content-Type: application/json');
6890 - echo json_encode($response_data);
6891 - return true;
6892 - }
6893 -
6894 - curl_close($ch);
6895 -
6896 - if (!empty($full_response) && !empty($session_id)) {
6897 - // Prepare RAG context for streaming response
6898 - $rag_context_for_storage = null;
6899 - $has_rag_data = $this->last_similarity_analysis !== null && !empty($this->last_similarity_analysis['top_matches']);
6900 - $has_action_data = isset($this->last_action_analysis) && !empty($this->last_action_analysis);
6901 -
6902 - if ($has_rag_data || $has_action_data) {
6903 - $rag_context_for_storage = [];
6904 -
6905 - if ($has_rag_data) {
6906 - $rag_context_for_storage['top_matches'] = $this->last_similarity_analysis['top_matches'];
6907 - $rag_context_for_storage['approved_urls'] = $this->current_valid_urls ?? [];
6908 - $rag_context_for_storage['similarity_threshold'] = $this->last_similarity_analysis['threshold_used'] ?? 0.35;
6909 - $rag_context_for_storage['knowledge_base_type'] = $this->last_similarity_analysis['knowledge_base_type'] ?? 'WordPress Database';
6910 - $rag_context_for_storage['total_documents_checked'] = $this->last_similarity_analysis['total_checked'] ?? 0;
6911 - }
6912 -
6913 - if ($has_action_data) {
6914 - $rag_context_for_storage['action_analysis'] = $this->last_action_analysis;
6915 - }
6916 - }
6917 - $this->mxchat_save_chat_message($session_id, 'bot', $full_response, null, $rag_context_for_storage);
6918 - }
6919 -
6920 - return true;
6921 -
6922 - } catch (Exception $e) {
6923 - $regular_response = $this->mxchat_generate_response_openrouter(
6924 - $selected_model,
6925 - $openrouter_api_key,
6926 - $conversation_history,
6927 - $relevant_content
6928 - );
6929 -
6930 - $response_data = [
6931 - 'text' => $regular_response,
6932 - 'html' => '',
6933 - 'session_id' => $session_id
6934 - ];
6935 -
6936 - if ($testing_data !== null) {
6937 - $response_data['testing_data'] = $testing_data;
6938 - }
6939 -
6940 - header('Content-Type: application/json');
6941 - echo json_encode($response_data);
6942 - return true;
6943 - }
6944 -}
6945 -private function mxchat_generate_response_openai_stream($selected_model, $api_key, $conversation_history, $relevant_content, $session_id, $testing_data = null) {
6946 - try {
6947 - $bot_id = $this->get_current_bot_id($session_id);
6948 -
6949 - // Get system prompt instructions using centralized function
6950 - $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
6951 -
6952 - // Ensure conversation_history is an array
6953 - if (!is_array($conversation_history)) {
6954 - $conversation_history = array();
6955 - }
6956 -
6957 - // Format conversation history for OpenAI
6958 - $formatted_conversation = array();
6959 -
6960 - $formatted_conversation[] = array(
6961 - 'role' => 'system',
6962 - 'content' => $system_prompt_instructions . " " . $relevant_content
6963 - );
6964 -
6965 - foreach ($conversation_history as $message) {
6966 - if (is_array($message) && isset($message['role']) && isset($message['content'])) {
6967 - $role = $message['role'];
6968 - if ($role === 'bot' || $role === 'agent') {
6969 - $role = 'assistant';
6970 - }
6971 - if (!in_array($role, ['system', 'assistant', 'user', 'function', 'tool'])) {
6972 - $role = 'user';
6973 - }
6974 - $formatted_conversation[] = array(
6975 - 'role' => $role,
6976 - 'content' => $message['content']
6977 - );
6978 - }
6979 - }
6980 -
6981 - // Check if we can actually stream
6982 - if (headers_sent() || !function_exists('curl_init')) {
6983 - // Fallback to regular response with testing data
6984 - $regular_response = $this->mxchat_generate_response_openai(
6985 - $selected_model,
6986 - $api_key,
6987 - $conversation_history,
6988 - $relevant_content
6989 - );
6990 -
6991 - // Save bot response to transcript
6992 - if (!empty($regular_response) && !empty($session_id)) {
6993 - $this->mxchat_save_chat_message($session_id, 'bot', $regular_response);
6994 - }
6995 -
6996 - $response_data = [
6997 - 'text' => $regular_response,
6998 - 'html' => '',
6999 - 'session_id' => $session_id
7000 - ];
7001 -
7002 - if ($testing_data !== null) {
7003 - $response_data['testing_data'] = $testing_data;
7004 - }
7005 -
7006 - header('Content-Type: application/json');
7007 - echo json_encode($response_data);
7008 - return true;
7009 - }
7010 -
7011 - // Check if this is a GPT-5 model (supports reasoning_effort parameter)
7012 - $is_gpt5_model = (
7013 - strpos($selected_model, 'gpt-5') === 0 ||
7014 - $selected_model === 'gpt-5.2' ||
7015 - $selected_model === 'gpt-5.1-2025-11-13' ||
7016 - $selected_model === 'gpt-5' ||
7017 - $selected_model === 'gpt-5-mini' ||
7018 - $selected_model === 'gpt-5-nano'
7019 - );
7020 -
7021 - // Build request body with optimal settings for fast streaming
7022 - $request_body = [
7023 - 'model' => $selected_model,
7024 - 'messages' => $formatted_conversation,
7025 - 'temperature' => 1,
7026 - 'stream' => true
7027 - ];
7028 -
7029 - // Add reasoning_effort only for GPT-5 models that support it
7030 - // These chat models don't support reasoning_effort parameter
7031 - $no_reasoning_models = array('gpt-5.2', 'gpt-5.1-chat-latest', 'gpt-5.3-chat-latest', 'gpt-5.4-mini', 'gpt-5.4-nano');
7032 - if ($is_gpt5_model && !in_array($selected_model, $no_reasoning_models, true)) {
7033 - // GPT-5.1 uses 'low' instead of 'minimal'
7034 - if ($selected_model === 'gpt-5.1-2025-11-13') {
7035 - $request_body['reasoning_effort'] = 'low';
7036 - } elseif ($selected_model === 'gpt-5.4') {
7037 - $request_body['reasoning_effort'] = 'none';
7038 - } else {
7039 - $request_body['reasoning_effort'] = 'minimal';
7040 - }
7041 - }
7042 -
7043 - $body = json_encode($request_body);
7044 -
7045 - // Setup streaming headers now that we know we're actually streaming
7046 - $this->setup_streaming_headers();
7047 -
7048 - // Use cURL for streaming support
7049 - $ch = curl_init();
7050 - curl_setopt($ch, CURLOPT_URL, 'https://api.openai.com/v1/chat/completions');
7051 - curl_setopt($ch, CURLOPT_RETURNTRANSFER, false);
7052 - curl_setopt($ch, CURLOPT_POST, true);
7053 - curl_setopt($ch, CURLOPT_POSTFIELDS, $body);
7054 - curl_setopt($ch, CURLOPT_HTTPHEADER, array(
7055 - 'Content-Type: application/json',
7056 - 'Authorization: Bearer ' . $api_key
7057 - ));
7058 - curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
7059 - curl_setopt($ch, CURLOPT_TIMEOUT, 60);
7060 -
7061 - $full_response = ''; // Accumulate full response for saving
7062 - $stream_started = false;
7063 - $buffer = ''; // CRITICAL: Add persistent buffer for incomplete chunks
7064 -
7065 - // Buffer control for real-time streaming
7066 - curl_setopt($ch, CURLOPT_WRITEFUNCTION, function($ch, $data) use (&$full_response, &$stream_started, &$buffer, $testing_data) {
7067 - // Send testing data as the first event if available
7068 - if (!$stream_started && $testing_data !== null) {
7069 - echo "data: " . json_encode(['testing_data' => $testing_data]) . "\n\n";
7070 - flush();
7071 - $stream_started = true;
7072 - }
7073 -
7074 - // CRITICAL FIX: Append new data to buffer
7075 - $buffer .= $data;
7076 -
7077 - // Process complete lines only
7078 - $lines = explode("\n", $buffer);
7079 -
7080 - // CRITICAL FIX: Keep the last incomplete line in the buffer
7081 - // The last element might be incomplete, so keep it in buffer
7082 - $buffer = array_pop($lines);
7083 -
7084 - foreach ($lines as $line) {
7085 - // Skip empty lines
7086 - if (trim($line) === '') {
7087 - continue;
7088 - }
7089 -
7090 - // Only process lines that start with "data: "
7091 - if (strpos($line, 'data: ') !== 0) {
7092 - continue;
7093 - }
7094 -
7095 - $json_str = substr($line, 6); // Remove 'data: ' prefix
7096 -
7097 - if (trim($json_str) === '[DONE]') {
7098 - echo "data: [DONE]\n\n";
7099 - flush();
7100 - continue;
7101 - }
7102 -
7103 - // Try to decode JSON
7104 - $json = json_decode(trim($json_str), true);
7105 - if ($json && isset($json['choices'][0]['delta']['content'])) {
7106 - $content = $json['choices'][0]['delta']['content'];
7107 - $full_response .= $content; // Accumulate the full response
7108 -
7109 - // Send as SSE format
7110 - echo "data: " . json_encode(['content' => $content]) . "\n\n";
7111 - flush();
7112 - }
7113 - }
7114 -
7115 - return strlen($data);
7116 - });
7117 -
7118 - $response = curl_exec($ch);
7119 - $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
7120 -
7121 - if (curl_errno($ch) || $http_code !== 200) {
7122 - $curl_error = curl_error($ch);
7123 - curl_close($ch);
7124 -
7125 - // Fallback to regular response
7126 - $regular_response = $this->mxchat_generate_response_openai(
7127 - $selected_model,
7128 - $api_key,
7129 - $conversation_history,
7130 - $relevant_content
7131 - );
7132 -
7133 - // FIXED: Check if regular response returned an error
7134 - if (is_array($regular_response) && isset($regular_response['error'])) {
7135 - // Send error in SSE format since we're in streaming mode
7136 - echo "data: " . json_encode([
7137 - 'error' => true,
7138 - 'error_message' => $regular_response['error'],
7139 - 'error_code' => $regular_response['error_code'] ?? 'api_error',
7140 - 'text' => $regular_response['error'],
7141 - 'message' => $regular_response['error']
7142 - ]) . "\n\n";
7143 - echo "data: [DONE]\n\n";
7144 - flush();
7145 - return true;
7146 - }
7147 -
7148 - $response_data = [
7149 - 'text' => $regular_response,
7150 - 'html' => '',
7151 - 'session_id' => $session_id
7152 - ];
7153 -
7154 - if ($testing_data !== null) {
7155 - $response_data['testing_data'] = $testing_data;
7156 - }
7157 -
7158 - header('Content-Type: application/json');
7159 - echo json_encode($response_data);
7160 - return true;
7161 - }
7162 -
7163 - curl_close($ch);
7164 -
7165 - // Save the complete response to maintain chat persistence
7166 - if (!empty($full_response) && !empty($session_id)) {
7167 - // Prepare RAG context for streaming response
7168 - $rag_context_for_storage = null;
7169 - $has_rag_data = $this->last_similarity_analysis !== null && !empty($this->last_similarity_analysis['top_matches']);
7170 - $has_action_data = isset($this->last_action_analysis) && !empty($this->last_action_analysis);
7171 -
7172 - if ($has_rag_data || $has_action_data) {
7173 - $rag_context_for_storage = [];
7174 -
7175 - if ($has_rag_data) {
7176 - $rag_context_for_storage['top_matches'] = $this->last_similarity_analysis['top_matches'];
7177 - $rag_context_for_storage['approved_urls'] = $this->current_valid_urls ?? [];
7178 - $rag_context_for_storage['similarity_threshold'] = $this->last_similarity_analysis['threshold_used'] ?? 0.35;
7179 - $rag_context_for_storage['knowledge_base_type'] = $this->last_similarity_analysis['knowledge_base_type'] ?? 'WordPress Database';
7180 - $rag_context_for_storage['total_documents_checked'] = $this->last_similarity_analysis['total_checked'] ?? 0;
7181 - }
7182 -
7183 - if ($has_action_data) {
7184 - $rag_context_for_storage['action_analysis'] = $this->last_action_analysis;
7185 - }
7186 - }
7187 - $this->mxchat_save_chat_message($session_id, 'bot', $full_response, null, $rag_context_for_storage);
7188 - }
7189 -
7190 - return true; // Indicate streaming completed successfully
7191 -
7192 - } catch (Exception $e) {
7193 - // Fallback to regular response
7194 - $regular_response = $this->mxchat_generate_response_openai(
7195 - $selected_model,
7196 - $api_key,
7197 - $conversation_history,
7198 - $relevant_content
7199 - );
7200 -
7201 - // FIXED: Check if regular response returned an error
7202 - if (is_array($regular_response) && isset($regular_response['error'])) {
7203 - // Send error in SSE format since we're in streaming mode
7204 - echo "data: " . json_encode([
7205 - 'error' => true,
7206 - 'error_message' => $regular_response['error'],
7207 - 'error_code' => $regular_response['error_code'] ?? 'api_error',
7208 - 'text' => $regular_response['error'],
7209 - 'message' => $regular_response['error']
7210 - ]) . "\n\n";
7211 - echo "data: [DONE]\n\n";
7212 - flush();
7213 - return true;
7214 - }
7215 -
7216 - $response_data = [
7217 - 'text' => $regular_response,
7218 - 'html' => '',
7219 - 'session_id' => $session_id
7220 - ];
7221 -
7222 - if ($testing_data !== null) {
7223 - $response_data['testing_data'] = $testing_data;
7224 - }
7225 -
7226 - header('Content-Type: application/json');
7227 - echo json_encode($response_data);
7228 - return true;
7229 - }
7230 -}
7231 -
7232 -/**
7233 - * Generate response using OpenAI Responses API with web search tool
7234 - * This uses the newer Responses API which supports web search functionality
7235 - */
7236 -private function mxchat_generate_response_openai_web_search($selected_model, $api_key, $conversation_history, $relevant_content, $session_id, $testing_data = null, $streaming = false) {
7237 - try {
7238 - $bot_id = $this->get_current_bot_id($session_id);
7239 - $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
7240 -
7241 - if (!is_array($conversation_history)) {
7242 - $conversation_history = array();
7243 - }
7244 -
7245 - // Build the input for Responses API
7246 - // The Responses API uses a different format - we need to construct the input properly
7247 - $input_parts = [];
7248 -
7249 - // Add system instructions as context
7250 - $system_context = $system_prompt_instructions . "\n\n" . $relevant_content;
7251 -
7252 - // Build conversation as input items for Responses API
7253 - foreach ($conversation_history as $message) {
7254 - if (is_array($message) && isset($message['role']) && isset($message['content'])) {
7255 - $role = $message['role'];
7256 - if ($role === 'bot' || $role === 'agent') {
7257 - $role = 'assistant';
7258 - }
7259 - if (!in_array($role, ['assistant', 'user'])) {
7260 - $role = 'user';
7261 - }
7262 - $input_parts[] = [
7263 - 'type' => 'message',
7264 - 'role' => $role,
7265 - 'content' => $message['content']
7266 - ];
7267 - }
7268 - }
7269 -
7270 - // Build request body for Responses API
7271 - $request_body = [
7272 - 'model' => $selected_model,
7273 - 'input' => $input_parts,
7274 - 'instructions' => $system_context,
7275 - 'stream' => $streaming
7276 - ];
7277 -
7278 - // Only add web search tool if web search is enabled in settings
7279 - $web_search_enabled = isset($this->options['enable_web_search']) && $this->options['enable_web_search'] === 'on';
7280 - if ($web_search_enabled) {
7281 - $request_body['tools'] = [
7282 - ['type' => 'web_search']
7283 - ];
7284 - }
7285 -
7286 - // Add reasoning effort for supported models
7287 - $is_gpt5_model = strpos($selected_model, 'gpt-5') === 0;
7288 - $no_reasoning_web = array('gpt-5.2', 'gpt-5.3-chat-latest', 'gpt-5.4-mini', 'gpt-5.4-nano');
7289 - if ($is_gpt5_model && !in_array($selected_model, $no_reasoning_web, true)) {
7290 - if ($selected_model === 'gpt-5.1-2025-11-13') {
7291 - $request_body['reasoning'] = ['effort' => 'low'];
7292 - } elseif ($selected_model === 'gpt-5.4') {
7293 - $request_body['reasoning'] = ['effort' => 'low'];
7294 - }
7295 - }
7296 -
7297 - //error_log("MXCHAT WEB SEARCH: Request body: " . json_encode($request_body));
7298 -
7299 - if ($streaming) {
7300 - return $this->mxchat_web_search_streaming_response($request_body, $api_key, $session_id, $testing_data);
7301 - } else {
7302 - return $this->mxchat_web_search_non_streaming_response($request_body, $api_key, $session_id, $testing_data);
7303 - }
7304 -
7305 - } catch (Exception $e) {
7306 - //error_log("MXCHAT WEB SEARCH ERROR: " . $e->getMessage());
7307 - return [
7308 - 'error' => sprintf(esc_html__('Web search error: %s', 'mxchat'), esc_html($e->getMessage())),
7309 - 'error_code' => 'web_search_exception'
7310 - ];
7311 - }
7312 -}
7313 -
7314 -/**
7315 - * Handle non-streaming web search response
7316 - */
7317 -private function mxchat_web_search_non_streaming_response($request_body, $api_key, $session_id, $testing_data) {
7318 - $request_body['stream'] = false;
7319 -
7320 - $response = wp_remote_post('https://api.openai.com/v1/responses', array(
7321 - 'headers' => array(
7322 - 'Authorization' => 'Bearer ' . $api_key,
7323 - 'Content-Type' => 'application/json'
7324 - ),
7325 - 'body' => json_encode($request_body),
7326 - 'timeout' => 90
7327 - ));
7328 -
7329 - if (is_wp_error($response)) {
7330 - //error_log("MXCHAT WEB SEARCH ERROR: WP Error: " . $response->get_error_message());
7331 - return [
7332 - 'error' => esc_html__('Failed to connect to OpenAI web search API', 'mxchat'),
7333 - 'error_code' => 'web_search_connection_error'
7334 - ];
7335 - }
7336 -
7337 - $response_code = wp_remote_retrieve_response_code($response);
7338 - $response_body = wp_remote_retrieve_body($response);
7339 -
7340 - //error_log("MXCHAT WEB SEARCH: Response code: " . $response_code);
7341 - //error_log("MXCHAT WEB SEARCH: Response body (first 2000): " . substr($response_body, 0, 2000));
7342 -
7343 - if ($response_code !== 200) {
7344 - $error_data = json_decode($response_body, true);
7345 - $error_message = $error_data['error']['message'] ?? 'Unknown API error';
7346 - return [
7347 - 'error' => sprintf(esc_html__('OpenAI API error: %s', 'mxchat'), esc_html($error_message)),
7348 - 'error_code' => 'web_search_api_error'
7349 - ];
7350 - }
7351 -
7352 - $result = json_decode($response_body, true);
7353 -
7354 - if (json_last_error() !== JSON_ERROR_NONE) {
7355 - return [
7356 - 'error' => esc_html__('Invalid response from OpenAI', 'mxchat'),
7357 - 'error_code' => 'web_search_json_error'
7358 - ];
7359 - }
7360 -
7361 - // Extract the response text and citations from Responses API format
7362 - $output_text = '';
7363 - $citations = [];
7364 -
7365 - if (isset($result['output'])) {
7366 - foreach ($result['output'] as $output_item) {
7367 - if ($output_item['type'] === 'message' && isset($output_item['content'])) {
7368 - foreach ($output_item['content'] as $content_item) {
7369 - if ($content_item['type'] === 'output_text') {
7370 - $output_text .= $content_item['text'];
7371 -
7372 - // Extract citations/annotations
7373 - if (isset($content_item['annotations'])) {
7374 - foreach ($content_item['annotations'] as $annotation) {
7375 - if ($annotation['type'] === 'url_citation') {
7376 - $citations[] = [
7377 - 'url' => $annotation['url'],
7378 - 'title' => $annotation['title'] ?? ''
7379 - ];
7380 - }
7381 - }
7382 - }
7383 - }
7384 - }
7385 - }
7386 - }
7387 - }
7388 -
7389 - // If we have citations, append them to the response
7390 - if (!empty($citations)) {
7391 - $output_text .= "\n\n**Sources:**\n";
7392 - $seen_urls = [];
7393 - foreach ($citations as $citation) {
7394 - if (!in_array($citation['url'], $seen_urls)) {
7395 - $seen_urls[] = $citation['url'];
7396 - $title = !empty($citation['title']) ? $citation['title'] : $citation['url'];
7397 - $output_text .= "- [" . $title . "](" . $citation['url'] . ")\n";
7398 - }
7399 - }
7400 - }
7401 -
7402 - // Transcript save is handled by the main handler (mxchat_handle_chat_request)
7403 - // which includes rag_context for the "sources" link in transcripts.
7404 -
7405 - return $output_text;
7406 -}
7407 -
7408 -/**
7409 - * Handle streaming web search response using Responses API
7410 - */
7411 -private function mxchat_web_search_streaming_response($request_body, $api_key, $session_id, $testing_data) {
7412 - $request_body['stream'] = true;
7413 -
7414 - // Check if we can stream
7415 - if (headers_sent() || !function_exists('curl_init')) {
7416 - // Fallback to non-streaming
7417 - return $this->mxchat_web_search_non_streaming_response($request_body, $api_key, $session_id, $testing_data);
7418 - }
7419 -
7420 - // Setup streaming headers
7421 - $this->setup_streaming_headers();
7422 -
7423 - $ch = curl_init();
7424 - curl_setopt($ch, CURLOPT_URL, 'https://api.openai.com/v1/responses');
7425 - curl_setopt($ch, CURLOPT_RETURNTRANSFER, false);
7426 - curl_setopt($ch, CURLOPT_POST, true);
7427 - curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($request_body));
7428 - curl_setopt($ch, CURLOPT_HTTPHEADER, array(
7429 - 'Content-Type: application/json',
7430 - 'Authorization: Bearer ' . $api_key
7431 - ));
7432 - curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
7433 - curl_setopt($ch, CURLOPT_TIMEOUT, 120);
7434 -
7435 - $full_response = '';
7436 - $stream_started = false;
7437 - $buffer = '';
7438 - $citations = [];
7439 -
7440 - curl_setopt($ch, CURLOPT_WRITEFUNCTION, function($ch, $data) use (&$full_response, &$stream_started, &$buffer, &$citations, $testing_data) {
7441 - // Send testing data as first event if available
7442 - if (!$stream_started && $testing_data !== null) {
7443 - echo "data: " . json_encode(['testing_data' => $testing_data]) . "\n\n";
7444 - flush();
7445 - $stream_started = true;
7446 - }
7447 -
7448 - $buffer .= $data;
7449 - $lines = explode("\n", $buffer);
7450 - $buffer = array_pop($lines);
7451 -
7452 - foreach ($lines as $line) {
7453 - if (trim($line) === '') continue;
7454 - if (strpos($line, 'data: ') !== 0) continue;
7455 -
7456 - $json_str = substr($line, 6);
7457 -
7458 - if (trim($json_str) === '[DONE]') {
7459 - // Append citations if we have any
7460 - if (!empty($citations)) {
7461 - $citation_text = "\n\n**Sources:**\n";
7462 - $seen_urls = [];
7463 - foreach ($citations as $citation) {
7464 - if (!in_array($citation['url'], $seen_urls)) {
7465 - $seen_urls[] = $citation['url'];
7466 - $title = !empty($citation['title']) ? $citation['title'] : $citation['url'];
7467 - $citation_text .= "- [" . $title . "](" . $citation['url'] . ")\n";
7468 - }
7469 - }
7470 - echo "data: " . json_encode(['content' => $citation_text]) . "\n\n";
7471 - $full_response .= $citation_text;
7472 - flush();
7473 - }
7474 - echo "data: [DONE]\n\n";
7475 - flush();
7476 - continue;
7477 - }
7478 -
7479 - $json = json_decode(trim($json_str), true);
7480 - if (!$json) continue;
7481 -
7482 - // Handle Responses API streaming events
7483 - // The format is different from Chat Completions
7484 - if (isset($json['type'])) {
7485 - switch ($json['type']) {
7486 - case 'response.output_text.delta':
7487 - // Text content delta
7488 - if (isset($json['delta'])) {
7489 - $content = $json['delta'];
7490 - $full_response .= $content;
7491 - echo "data: " . json_encode(['content' => $content]) . "\n\n";
7492 - flush();
7493 - }
7494 - break;
7495 -
7496 - case 'response.output_item.done':
7497 - // Check for citations in completed items
7498 - if (isset($json['item']['content'])) {
7499 - foreach ($json['item']['content'] as $content_item) {
7500 - if (isset($content_item['annotations'])) {
7501 - foreach ($content_item['annotations'] as $annotation) {
7502 - if ($annotation['type'] === 'url_citation') {
7503 - $citations[] = [
7504 - 'url' => $annotation['url'],
7505 - 'title' => $annotation['title'] ?? ''
7506 - ];
7507 - }
7508 - }
7509 - }
7510 - }
7511 - }
7512 - break;
7513 - }
7514 - }
7515 - }
7516 -
7517 - return strlen($data);
7518 - });
7519 -
7520 - $response = curl_exec($ch);
7521 - $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
7522 -
7523 - if (curl_errno($ch) || $http_code !== 200) {
7524 - $curl_error = curl_error($ch);
7525 - curl_close($ch);
7526 -
7527 - //error_log("MXCHAT WEB SEARCH STREAM ERROR: HTTP $http_code, cURL error: $curl_error");
7528 -
7529 - // Fallback to non-streaming
7530 - $fallback_response = $this->mxchat_web_search_non_streaming_response($request_body, $api_key, $session_id, $testing_data);
7531 -
7532 - if (is_array($fallback_response) && isset($fallback_response['error'])) {
7533 - echo "data: " . json_encode([
7534 - 'error' => true,
7535 - 'error_message' => $fallback_response['error'],
7536 - 'error_code' => $fallback_response['error_code'] ?? 'web_search_error'
7537 - ]) . "\n\n";
7538 - echo "data: [DONE]\n\n";
7539 - flush();
7540 - return true;
7541 - }
7542 -
7543 - $response_data = [
7544 - 'text' => $fallback_response,
7545 - 'html' => '',
7546 - 'session_id' => $session_id
7547 - ];
7548 - if ($testing_data !== null) {
7549 - $response_data['testing_data'] = $testing_data;
7550 - }
7551 - header('Content-Type: application/json');
7552 - echo json_encode($response_data);
7553 - return true;
7554 - }
7555 -
7556 - curl_close($ch);
7557 -
7558 - // Save the complete response with RAG context so the "sources" link
7559 - // appears in transcripts — mirrors the pattern used by Claude/OpenAI streaming.
7560 - if (!empty($full_response) && !empty($session_id)) {
7561 - $rag_context_for_storage = null;
7562 - $has_rag_data = $this->last_similarity_analysis !== null && !empty($this->last_similarity_analysis['top_matches']);
7563 - $has_action_data = isset($this->last_action_analysis) && !empty($this->last_action_analysis);
7564 -
7565 - if ($has_rag_data || $has_action_data) {
7566 - $rag_context_for_storage = [];
7567 -
7568 - if ($has_rag_data) {
7569 - $rag_context_for_storage['top_matches'] = $this->last_similarity_analysis['top_matches'];
7570 - $rag_context_for_storage['approved_urls'] = $this->current_valid_urls ?? [];
7571 - $rag_context_for_storage['similarity_threshold'] = $this->last_similarity_analysis['threshold_used'] ?? 0.35;
7572 - $rag_context_for_storage['knowledge_base_type'] = $this->last_similarity_analysis['knowledge_base_type'] ?? 'WordPress Database';
7573 - $rag_context_for_storage['total_documents_checked'] = $this->last_similarity_analysis['total_checked'] ?? 0;
7574 - }
7575 -
7576 - if ($has_action_data) {
7577 - $rag_context_for_storage['action_analysis'] = $this->last_action_analysis;
7578 - }
7579 - }
7580 - $this->mxchat_save_chat_message($session_id, 'bot', $full_response, null, $rag_context_for_storage);
7581 - }
7582 -
7583 - return true;
7584 -}
7585 -
7586 -private function mxchat_generate_response_claude_stream($selected_model, $claude_api_key, $conversation_history, $relevant_content, $session_id, $testing_data = null) {
7587 - try {
7588 - // Get bot ID from session or request
7589 - $bot_id = $this->get_current_bot_id($session_id);
7590 -
7591 - // Get system prompt instructions using centralized function
7592 - $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
7593 - // Ensure conversation_history is an array
7594 - if (!is_array($conversation_history)) {
7595 - $conversation_history = array();
7596 - }
7597 -
7598 - // Clean and validate conversation history
7599 - foreach ($conversation_history as &$message) {
7600 - // Convert bot and agent roles to assistant
7601 - if ($message['role'] === 'bot' || $message['role'] === 'agent') {
7602 - $message['role'] = 'assistant';
7603 - }
7604 -
7605 - // Remove unsupported roles - Claude only supports 'assistant' and 'user'
7606 - if (!in_array($message['role'], ['assistant', 'user'])) {
7607 - $message['role'] = 'user';
7608 - }
7609 -
7610 - // Ensure content field exists
7611 - if (!isset($message['content']) || empty($message['content'])) {
7612 - $message['content'] = '';
7613 - }
7614 -
7615 - // Remove any unsupported fields
7616 - $message = array_intersect_key($message, array_flip(['role', 'content']));
7617 - }
7618 -
7619 - // Add relevant content as the latest user message
7620 - $conversation_history[] = [
7621 - 'role' => 'user',
7622 - 'content' => $relevant_content
7623 - ];
7624 -
7625 - // Prepare the request body with stream: true
7626 - $body = json_encode([
7627 - 'model' => $selected_model,
7628 - 'messages' => $conversation_history,
7629 - 'max_tokens' => 1000,
7630 - 'temperature' => 0.8,
7631 - 'system' => $system_prompt_instructions,
7632 - 'stream' => true
7633 - ]);
7634 -
7635 - // Check if we can actually stream (headers not sent, etc.)
7636 - if (headers_sent() || !function_exists('curl_init')) {
7637 - // Fallback to regular response with testing data
7638 - //error_log("MxChat: Streaming not possible, falling back to regular response");
7639 - $regular_response = $this->mxchat_generate_response_claude(
7640 - $selected_model,
7641 - $claude_api_key,
7642 - array_slice($conversation_history, 0, -1), // Remove the added content
7643 - $relevant_content
7644 - );
7645 -
7646 - // Save bot response to transcript
7647 - if (!empty($regular_response) && !empty($session_id)) {
7648 - $this->mxchat_save_chat_message($session_id, 'bot', $regular_response);
7649 - }
7650 -
7651 - // Return as JSON with testing data
7652 - $response_data = [
7653 - 'text' => $regular_response,
7654 - 'html' => '',
7655 - 'session_id' => $session_id
7656 - ];
7657 -
7658 - if ($testing_data !== null) {
7659 - $response_data['testing_data'] = $testing_data;
7660 - //error_log("MxChat Testing: Added testing data to Claude fallback response");
7661 - }
7662 -
7663 - // Clear any streaming headers and send JSON
7664 - if (headers_sent() === false) {
7665 - header('Content-Type: application/json');
7666 - }
7667 - echo json_encode($response_data);
7668 - return true; // Indicate we handled the response
7669 - }
7670 -
7671 - // Setup streaming headers now that we know we're actually streaming
7672 - $this->setup_streaming_headers();
7673 -
7674 - // Use cURL for streaming support
7675 - $ch = curl_init();
7676 - curl_setopt($ch, CURLOPT_URL, 'https://api.anthropic.com/v1/messages');
7677 - curl_setopt($ch, CURLOPT_RETURNTRANSFER, false);
7678 - curl_setopt($ch, CURLOPT_POST, true);
7679 - curl_setopt($ch, CURLOPT_POSTFIELDS, $body);
7680 - curl_setopt($ch, CURLOPT_HTTPHEADER, array(
7681 - 'Content-Type: application/json',
7682 - 'x-api-key: ' . $claude_api_key,
7683 - 'anthropic-version: 2023-06-01'
7684 - ));
7685 - curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
7686 - curl_setopt($ch, CURLOPT_TIMEOUT, 60);
7687 -
7688 - $full_response = ''; // Accumulate full response for saving
7689 - $stream_started = false;
7690 - $buffer = ''; // CRITICAL: Add persistent buffer for incomplete chunks
7691 -
7692 - // Buffer control for real-time streaming
7693 - curl_setopt($ch, CURLOPT_WRITEFUNCTION, function($ch, $data) use (&$full_response, &$stream_started, &$buffer, $testing_data) {
7694 - // Send testing data as the first event if available
7695 - if (!$stream_started && $testing_data !== null) {
7696 - echo "data: " . json_encode(['testing_data' => $testing_data]) . "\n\n";
7697 - flush();
7698 - $stream_started = true;
7699 - //error_log("MxChat Testing: Sent testing data in Claude stream");
7700 - }
7701 -
7702 - // CRITICAL FIX: Append new data to buffer
7703 - $buffer .= $data;
7704 -
7705 - // Process complete lines only
7706 - $lines = explode("\n", $buffer);
7707 -
7708 - // CRITICAL FIX: Keep the last incomplete line in the buffer
7709 - // The last element might be incomplete, so keep it in buffer
7710 - $buffer = array_pop($lines);
7711 -
7712 - foreach ($lines as $line) {
7713 - if (trim($line) === '') {
7714 - continue;
7715 - }
7716 -
7717 - // Claude uses event: and data: format
7718 - if (strpos($line, 'event: ') === 0) {
7719 - // Store the event type for the next data line
7720 - continue;
7721 - }
7722 -
7723 - if (strpos($line, 'data: ') === 0) {
7724 - $json_str = substr($line, 6); // Remove 'data: ' prefix
7725 -
7726 - $json = json_decode(trim($json_str), true);
7727 - if (json_last_error() !== JSON_ERROR_NONE) {
7728 - continue;
7729 - }
7730 -
7731 - // Handle different event types
7732 - if (isset($json['type'])) {
7733 - switch ($json['type']) {
7734 - case 'content_block_delta':
7735 - if (isset($json['delta']['text'])) {
7736 - $content = $json['delta']['text'];
7737 - $full_response .= $content; // Accumulate
7738 - // Send as SSE format compatible with your frontend
7739 - echo "data: " . json_encode(['content' => $content]) . "\n\n";
7740 - flush();
7741 - }
7742 - break;
7743 -
7744 - case 'message_stop':
7745 - echo "data: [DONE]\n\n";
7746 - flush();
7747 - break;
7748 -
7749 - case 'error':
7750 - echo "data: " . json_encode(['error' => $json['error']['message'] ?? 'Unknown error']) . "\n\n";
7751 - flush();
7752 - break;
7753 - }
7754 - }
7755 - }
7756 - }
7757 -
7758 - return strlen($data);
7759 - });
7760 -
7761 - $response = curl_exec($ch);
7762 - $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
7763 -
7764 - if (curl_errno($ch)) {
7765 - curl_close($ch);
7766 - throw new Exception('cURL Error: ' . curl_error($ch));
7767 - }
7768 -
7769 - curl_close($ch);
7770 -
7771 - if ($http_code !== 200) {
7772 - // Fallback to regular response
7773 - //error_log("MxChat: Claude streaming failed with HTTP $http_code, falling back");
7774 - $regular_response = $this->mxchat_generate_response_claude(
7775 - $selected_model,
7776 - $claude_api_key,
7777 - array_slice($conversation_history, 0, -1), // Remove the added content
7778 - $relevant_content
7779 - );
7780 -
7781 - // FIXED: Check if regular response returned an error
7782 - if (is_array($regular_response) && isset($regular_response['error'])) {
7783 - // Send error in SSE format since we're in streaming mode
7784 - echo "data: " . json_encode([
7785 - 'error' => true,
7786 - 'error_message' => $regular_response['error'],
7787 - 'error_code' => $regular_response['error_code'] ?? 'api_error',
7788 - 'text' => $regular_response['error'],
7789 - 'message' => $regular_response['error']
7790 - ]) . "\n\n";
7791 - echo "data: [DONE]\n\n";
7792 - flush();
7793 - return true;
7794 - }
7795 -
7796 - $response_data = [
7797 - 'text' => $regular_response,
7798 - 'html' => '',
7799 - 'session_id' => $session_id
7800 - ];
7801 -
7802 - if ($testing_data !== null) {
7803 - $response_data['testing_data'] = $testing_data;
7804 - //error_log("MxChat Testing: Added testing data to Claude error fallback");
7805 - }
7806 -
7807 - header('Content-Type: application/json');
7808 - echo json_encode($response_data);
7809 - return true;
7810 - }
7811 -
7812 - // Save the complete response to maintain chat persistence
7813 - if (!empty($full_response) && !empty($session_id)) {
7814 - // Prepare RAG context for streaming response
7815 - $rag_context_for_storage = null;
7816 - $has_rag_data = $this->last_similarity_analysis !== null && !empty($this->last_similarity_analysis['top_matches']);
7817 - $has_action_data = isset($this->last_action_analysis) && !empty($this->last_action_analysis);
7818 -
7819 - if ($has_rag_data || $has_action_data) {
7820 - $rag_context_for_storage = [];
7821 -
7822 - if ($has_rag_data) {
7823 - $rag_context_for_storage['top_matches'] = $this->last_similarity_analysis['top_matches'];
7824 - $rag_context_for_storage['approved_urls'] = $this->current_valid_urls ?? [];
7825 - $rag_context_for_storage['similarity_threshold'] = $this->last_similarity_analysis['threshold_used'] ?? 0.35;
7826 - $rag_context_for_storage['knowledge_base_type'] = $this->last_similarity_analysis['knowledge_base_type'] ?? 'WordPress Database';
7827 - $rag_context_for_storage['total_documents_checked'] = $this->last_similarity_analysis['total_checked'] ?? 0;
7828 - }
7829 -
7830 - if ($has_action_data) {
7831 - $rag_context_for_storage['action_analysis'] = $this->last_action_analysis;
7832 - }
7833 - }
7834 - $this->mxchat_save_chat_message($session_id, 'bot', $full_response, null, $rag_context_for_storage);
7835 - }
7836 -
7837 - return true; // Indicate streaming completed successfully
7838 -
7839 - } catch (Exception $e) {
7840 - //error_log("MxChat Claude streaming exception: " . $e->getMessage());
7841 -
7842 - // Fallback to regular response on exception
7843 - $regular_response = $this->mxchat_generate_response_claude(
7844 - $selected_model,
7845 - $claude_api_key,
7846 - $conversation_history,
7847 - $relevant_content
7848 - );
7849 -
7850 - // FIXED: Check if regular response returned an error
7851 - if (is_array($regular_response) && isset($regular_response['error'])) {
7852 - // Send error in SSE format since we're in streaming mode
7853 - echo "data: " . json_encode([
7854 - 'error' => true,
7855 - 'error_message' => $regular_response['error'],
7856 - 'error_code' => $regular_response['error_code'] ?? 'api_error',
7857 - 'text' => $regular_response['error'],
7858 - 'message' => $regular_response['error']
7859 - ]) . "\n\n";
7860 - echo "data: [DONE]\n\n";
7861 - flush();
7862 - return true;
7863 - }
7864 -
7865 - $response_data = [
7866 - 'text' => $regular_response,
7867 - 'html' => '',
7868 - 'session_id' => $session_id
7869 - ];
7870 -
7871 - if ($testing_data !== null) {
7872 - $response_data['testing_data'] = $testing_data;
7873 - //error_log("MxChat Testing: Added testing data to Claude exception fallback");
7874 - }
7875 -
7876 - header('Content-Type: application/json');
7877 - echo json_encode($response_data);
7878 - return true;
7879 - }
7880 -}
7881 -private function mxchat_generate_response_xai_stream($selected_model, $xai_api_key, $conversation_history, $relevant_content, $session_id, $testing_data = null) {
7882 - try {
7883 - // Get bot ID from session or request
7884 - $bot_id = $this->get_current_bot_id($session_id);
7885 -
7886 - // Get system prompt instructions using centralized function
7887 - $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
7888 -
7889 - // Ensure conversation_history is an array
7890 - if (!is_array($conversation_history)) {
7891 - $conversation_history = array();
7892 - }
7893 -
7894 - // Format conversation history for X.AI (same as OpenAI format)
7895 - $formatted_conversation = array();
7896 -
7897 - $formatted_conversation[] = array(
7898 - 'role' => 'system',
7899 - 'content' => $system_prompt_instructions . " " . $relevant_content
7900 - );
7901 -
7902 - foreach ($conversation_history as $message) {
7903 - if (is_array($message) && isset($message['role']) && isset($message['content'])) {
7904 - $role = $message['role'];
7905 - if ($role === 'bot' || $role === 'agent') {
7906 - $role = 'assistant';
7907 - }
7908 - if (!in_array($role, ['system', 'assistant', 'user', 'function', 'tool'])) {
7909 - $role = 'user';
7910 - }
7911 - $formatted_conversation[] = array(
7912 - 'role' => $role,
7913 - 'content' => $message['content']
7914 - );
7915 - }
7916 - }
7917 -
7918 - // Check if we can actually stream
7919 - if (headers_sent() || !function_exists('curl_init')) {
7920 - // Fallback to regular response with testing data
7921 - //error_log("MxChat: X.AI streaming not possible, falling back to regular response");
7922 - $regular_response = $this->mxchat_generate_response_xai(
7923 - $selected_model,
7924 - $xai_api_key,
7925 - $conversation_history,
7926 - $relevant_content
7927 - );
7928 -
7929 - // Save bot response to transcript
7930 - if (!empty($regular_response) && !empty($session_id)) {
7931 - $this->mxchat_save_chat_message($session_id, 'bot', $regular_response);
7932 - }
7933 -
7934 - $response_data = [
7935 - 'text' => $regular_response,
7936 - 'html' => '',
7937 - 'session_id' => $session_id
7938 - ];
7939 -
7940 - if ($testing_data !== null) {
7941 - $response_data['testing_data'] = $testing_data;
7942 - //error_log("MxChat Testing: Added testing data to X.AI fallback response");
7943 - }
7944 -
7945 - header('Content-Type: application/json');
7946 - echo json_encode($response_data);
7947 - return true;
7948 - }
7949 -
7950 - // Prepare the request body with stream: true
7951 - $body = json_encode([
7952 - 'model' => $selected_model,
7953 - 'messages' => $formatted_conversation,
7954 - 'temperature' => 0.8,
7955 - 'stream' => true
7956 - ]);
7957 -
7958 - // Setup streaming headers now that we know we're actually streaming
7959 - $this->setup_streaming_headers();
7960 -
7961 - // Use cURL for streaming support
7962 - $ch = curl_init();
7963 - curl_setopt($ch, CURLOPT_URL, 'https://api.x.ai/v1/chat/completions');
7964 - curl_setopt($ch, CURLOPT_RETURNTRANSFER, false);
7965 - curl_setopt($ch, CURLOPT_POST, true);
7966 - curl_setopt($ch, CURLOPT_POSTFIELDS, $body);
7967 - curl_setopt($ch, CURLOPT_HTTPHEADER, array(
7968 - 'Content-Type: application/json',
7969 - 'Authorization: Bearer ' . $xai_api_key
7970 - ));
7971 - curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
7972 - curl_setopt($ch, CURLOPT_TIMEOUT, 60);
7973 -
7974 - $full_response = ''; // Accumulate full response for saving
7975 - $stream_started = false;
7976 - $buffer = ''; // CRITICAL: Add persistent buffer for incomplete chunks
7977 -
7978 - // Buffer control for real-time streaming
7979 - curl_setopt($ch, CURLOPT_WRITEFUNCTION, function($ch, $data) use (&$full_response, &$stream_started, &$buffer, $testing_data) {
7980 - // Send testing data as the first event if available
7981 - if (!$stream_started && $testing_data !== null) {
7982 - echo "data: " . json_encode(['testing_data' => $testing_data]) . "\n\n";
7983 - flush();
7984 - $stream_started = true;
7985 - //error_log("MxChat Testing: Sent testing data in X.AI stream");
7986 - }
7987 -
7988 - // CRITICAL FIX: Append new data to buffer
7989 - $buffer .= $data;
7990 -
7991 - // Process complete lines only
7992 - $lines = explode("\n", $buffer);
7993 -
7994 - // CRITICAL FIX: Keep the last incomplete line in the buffer
7995 - // The last element might be incomplete, so keep it in buffer
7996 - $buffer = array_pop($lines);
7997 -
7998 - foreach ($lines as $line) {
7999 - // Skip empty lines
8000 - if (trim($line) === '') {
8001 - continue;
8002 - }
8003 -
8004 - // Only process lines that start with "data: "
8005 - if (strpos($line, 'data: ') !== 0) {
8006 - continue;
8007 - }
8008 -
8009 - $json_str = substr($line, 6); // Remove 'data: ' prefix
8010 -
8011 - if (trim($json_str) === '[DONE]') {
8012 - echo "data: [DONE]\n\n";
8013 - flush();
8014 - continue;
8015 - }
8016 -
8017 - // Try to decode JSON
8018 - $json = json_decode(trim($json_str), true);
8019 - if ($json && isset($json['choices'][0]['delta']['content'])) {
8020 - $content = $json['choices'][0]['delta']['content'];
8021 - $full_response .= $content; // Accumulate
8022 - // Send as SSE format
8023 - echo "data: " . json_encode(['content' => $content]) . "\n\n";
8024 - flush();
8025 - }
8026 - }
8027 -
8028 - return strlen($data);
8029 - });
8030 -
8031 - $response = curl_exec($ch);
8032 - $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
8033 -
8034 - if (curl_errno($ch) || $http_code !== 200) {
8035 - curl_close($ch);
8036 -
8037 - // Fallback to regular response
8038 - //error_log("MxChat: X.AI streaming failed, falling back");
8039 - $regular_response = $this->mxchat_generate_response_xai(
8040 - $selected_model,
8041 - $xai_api_key,
8042 - $conversation_history,
8043 - $relevant_content
8044 - );
8045 -
8046 - $response_data = [
8047 - 'text' => $regular_response,
8048 - 'html' => '',
8049 - 'session_id' => $session_id
8050 - ];
8051 -
8052 - if ($testing_data !== null) {
8053 - $response_data['testing_data'] = $testing_data;
8054 - //error_log("MxChat Testing: Added testing data to X.AI error fallback");
8055 - }
8056 -
8057 - header('Content-Type: application/json');
8058 - echo json_encode($response_data);
8059 - return true;
8060 - }
8061 -
8062 - curl_close($ch);
8063 -
8064 - // Save the complete response to maintain chat persistence
8065 - if (!empty($full_response) && !empty($session_id)) {
8066 - // Prepare RAG context for streaming response
8067 - $rag_context_for_storage = null;
8068 - $has_rag_data = $this->last_similarity_analysis !== null && !empty($this->last_similarity_analysis['top_matches']);
8069 - $has_action_data = isset($this->last_action_analysis) && !empty($this->last_action_analysis);
8070 -
8071 - if ($has_rag_data || $has_action_data) {
8072 - $rag_context_for_storage = [];
8073 -
8074 - if ($has_rag_data) {
8075 - $rag_context_for_storage['top_matches'] = $this->last_similarity_analysis['top_matches'];
8076 - $rag_context_for_storage['approved_urls'] = $this->current_valid_urls ?? [];
8077 - $rag_context_for_storage['similarity_threshold'] = $this->last_similarity_analysis['threshold_used'] ?? 0.35;
8078 - $rag_context_for_storage['knowledge_base_type'] = $this->last_similarity_analysis['knowledge_base_type'] ?? 'WordPress Database';
8079 - $rag_context_for_storage['total_documents_checked'] = $this->last_similarity_analysis['total_checked'] ?? 0;
8080 - }
8081 -
8082 - if ($has_action_data) {
8083 - $rag_context_for_storage['action_analysis'] = $this->last_action_analysis;
8084 - }
8085 - }
8086 - $this->mxchat_save_chat_message($session_id, 'bot', $full_response, null, $rag_context_for_storage);
8087 - }
8088 -
8089 - return true; // Indicate streaming completed successfully
8090 -
8091 - } catch (Exception $e) {
8092 - //error_log("MxChat X.AI streaming exception: " . $e->getMessage());
8093 -
8094 - // Fallback to regular response
8095 - $regular_response = $this->mxchat_generate_response_xai(
8096 - $selected_model,
8097 - $xai_api_key,
8098 - $conversation_history,
8099 - $relevant_content
8100 - );
8101 -
8102 - $response_data = [
8103 - 'text' => $regular_response,
8104 - 'html' => '',
8105 - 'session_id' => $session_id
8106 - ];
8107 -
8108 - if ($testing_data !== null) {
8109 - $response_data['testing_data'] = $testing_data;
8110 - //error_log("MxChat Testing: Added testing data to X.AI exception fallback");
8111 - }
8112 -
8113 - header('Content-Type: application/json');
8114 - echo json_encode($response_data);
8115 - return true;
8116 - }
8117 -}
8118 -private function mxchat_generate_response_deepseek_stream($selected_model, $deepseek_api_key, $conversation_history, $relevant_content, $session_id, $testing_data = null) {
8119 - try {
8120 - // Get bot ID from session or request
8121 - $bot_id = $this->get_current_bot_id($session_id);
8122 -
8123 - // Get system prompt instructions using centralized function
8124 - $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
8125 -
8126 - // Ensure conversation_history is an array
8127 - if (!is_array($conversation_history)) {
8128 - $conversation_history = array();
8129 - }
8130 -
8131 - // Format conversation history for DeepSeek
8132 - $formatted_conversation = array();
8133 -
8134 - $formatted_conversation[] = array(
8135 - 'role' => 'system',
8136 - 'content' => $system_prompt_instructions . " " . $relevant_content
8137 - );
8138 -
8139 - foreach ($conversation_history as $message) {
8140 - if (is_array($message) && isset($message['role']) && isset($message['content'])) {
8141 - $role = $message['role'];
8142 - if ($role === 'bot' || $role === 'agent') {
8143 - $role = 'assistant';
8144 - }
8145 - if (!in_array($role, ['system', 'assistant', 'user', 'function', 'tool'])) {
8146 - $role = 'user';
8147 - }
8148 - $formatted_conversation[] = array(
8149 - 'role' => $role,
8150 - 'content' => $message['content']
8151 - );
8152 - }
8153 - }
8154 -
8155 - // Check if we can actually stream
8156 - if (headers_sent() || !function_exists('curl_init')) {
8157 - // Fallback to regular response with testing data
8158 - //error_log("MxChat: DeepSeek streaming not possible, falling back to regular response");
8159 - $regular_response = $this->mxchat_generate_response_deepseek(
8160 - $selected_model,
8161 - $deepseek_api_key,
8162 - $conversation_history,
8163 - $relevant_content
8164 - );
8165 -
8166 - // Save bot response to transcript
8167 - if (!empty($regular_response) && !empty($session_id)) {
8168 - $this->mxchat_save_chat_message($session_id, 'bot', $regular_response);
8169 - }
8170 -
8171 - $response_data = [
8172 - 'text' => $regular_response,
8173 - 'html' => '',
8174 - 'session_id' => $session_id
8175 - ];
8176 -
8177 - if ($testing_data !== null) {
8178 - $response_data['testing_data'] = $testing_data;
8179 - //error_log("MxChat Testing: Added testing data to DeepSeek fallback response");
8180 - }
8181 -
8182 - header('Content-Type: application/json');
8183 - echo json_encode($response_data);
8184 - return true;
8185 - }
8186 -
8187 - // Prepare the request body with stream: true
8188 - $body = json_encode([
8189 - 'model' => $selected_model,
8190 - 'messages' => $formatted_conversation,
8191 - 'temperature' => 0.8,
8192 - 'stream' => true
8193 - ]);
8194 -
8195 - // Setup streaming headers now that we know we're actually streaming
8196 - $this->setup_streaming_headers();
8197 -
8198 - // Use cURL for streaming support
8199 - $ch = curl_init();
8200 - curl_setopt($ch, CURLOPT_URL, 'https://api.deepseek.com/v1/chat/completions');
8201 - curl_setopt($ch, CURLOPT_RETURNTRANSFER, false);
8202 - curl_setopt($ch, CURLOPT_POST, true);
8203 - curl_setopt($ch, CURLOPT_POSTFIELDS, $body);
8204 - curl_setopt($ch, CURLOPT_HTTPHEADER, array(
8205 - 'Content-Type: application/json',
8206 - 'Authorization: Bearer ' . $deepseek_api_key
8207 - ));
8208 - curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
8209 - curl_setopt($ch, CURLOPT_TIMEOUT, 60);
8210 -
8211 - $full_response = ''; // Accumulate full response for saving
8212 - $stream_started = false;
8213 - $buffer = ''; // CRITICAL: Add persistent buffer for incomplete chunks
8214 -
8215 - // Buffer control for real-time streaming
8216 - curl_setopt($ch, CURLOPT_WRITEFUNCTION, function($ch, $data) use (&$full_response, &$stream_started, &$buffer, $testing_data) {
8217 - // Send testing data as the first event if available
8218 - if (!$stream_started && $testing_data !== null) {
8219 - echo "data: " . json_encode(['testing_data' => $testing_data]) . "\n\n";
8220 - flush();
8221 - $stream_started = true;
8222 - //error_log("MxChat Testing: Sent testing data in DeepSeek stream");
8223 - }
8224 -
8225 - // CRITICAL FIX: Append new data to buffer
8226 - $buffer .= $data;
8227 -
8228 - // Process complete lines only
8229 - $lines = explode("\n", $buffer);
8230 -
8231 - // CRITICAL FIX: Keep the last incomplete line in the buffer
8232 - // The last element might be incomplete, so keep it in buffer
8233 - $buffer = array_pop($lines);
8234 -
8235 - foreach ($lines as $line) {
8236 - // Skip empty lines
8237 - if (trim($line) === '') {
8238 - continue;
8239 - }
8240 -
8241 - // Only process lines that start with "data: "
8242 - if (strpos($line, 'data: ') !== 0) {
8243 - continue;
8244 - }
8245 -
8246 - $json_str = substr($line, 6); // Remove 'data: ' prefix
8247 -
8248 - if (trim($json_str) === '[DONE]') {
8249 - echo "data: [DONE]\n\n";
8250 - flush();
8251 - continue;
8252 - }
8253 -
8254 - // Try to decode JSON
8255 - $json = json_decode(trim($json_str), true);
8256 - if ($json && isset($json['choices'][0]['delta']['content'])) {
8257 - $content = $json['choices'][0]['delta']['content'];
8258 - $full_response .= $content; // Accumulate the full response
8259 -
8260 - // Send as SSE format
8261 - echo "data: " . json_encode(['content' => $content]) . "\n\n";
8262 - flush();
8263 - }
8264 - }
8265 -
8266 - return strlen($data);
8267 - });
8268 -
8269 - $response = curl_exec($ch);
8270 - $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
8271 -
8272 - if (curl_errno($ch) || $http_code !== 200) {
8273 - $curl_error = curl_error($ch);
8274 - curl_close($ch);
8275 -
8276 - // Log the specific error for debugging
8277 - //error_log("MxChat: DeepSeek streaming failed - HTTP: $http_code, cURL: $curl_error");
8278 -
8279 - // Fallback to regular response
8280 - $regular_response = $this->mxchat_generate_response_deepseek(
8281 - $selected_model,
8282 - $deepseek_api_key,
8283 - $conversation_history,
8284 - $relevant_content
8285 - );
8286 -
8287 - // Handle error response from regular function
8288 - if (is_array($regular_response) && isset($regular_response['error'])) {
8289 - if ($testing_data !== null) {
8290 - $regular_response['testing_data'] = $testing_data;
8291 - }
8292 - header('Content-Type: application/json');
8293 - echo json_encode($regular_response);
8294 - return true;
8295 - }
8296 -
8297 - $response_data = [
8298 - 'text' => $regular_response,
8299 - 'html' => '',
8300 - 'session_id' => $session_id
8301 - ];
8302 -
8303 - if ($testing_data !== null) {
8304 - $response_data['testing_data'] = $testing_data;
8305 - //error_log("MxChat Testing: Added testing data to DeepSeek error fallback");
8306 - }
8307 -
8308 - header('Content-Type: application/json');
8309 - echo json_encode($response_data);
8310 - return true;
8311 - }
8312 -
8313 - curl_close($ch);
8314 -
8315 - // Save the complete response to maintain chat persistence
8316 - if (!empty($full_response) && !empty($session_id)) {
8317 - // Prepare RAG context for streaming response
8318 - $rag_context_for_storage = null;
8319 - $has_rag_data = $this->last_similarity_analysis !== null && !empty($this->last_similarity_analysis['top_matches']);
8320 - $has_action_data = isset($this->last_action_analysis) && !empty($this->last_action_analysis);
8321 -
8322 - if ($has_rag_data || $has_action_data) {
8323 - $rag_context_for_storage = [];
8324 -
8325 - if ($has_rag_data) {
8326 - $rag_context_for_storage['top_matches'] = $this->last_similarity_analysis['top_matches'];
8327 - $rag_context_for_storage['approved_urls'] = $this->current_valid_urls ?? [];
8328 - $rag_context_for_storage['similarity_threshold'] = $this->last_similarity_analysis['threshold_used'] ?? 0.35;
8329 - $rag_context_for_storage['knowledge_base_type'] = $this->last_similarity_analysis['knowledge_base_type'] ?? 'WordPress Database';
8330 - $rag_context_for_storage['total_documents_checked'] = $this->last_similarity_analysis['total_checked'] ?? 0;
8331 - }
8332 -
8333 - if ($has_action_data) {
8334 - $rag_context_for_storage['action_analysis'] = $this->last_action_analysis;
8335 - }
8336 - }
8337 - $this->mxchat_save_chat_message($session_id, 'bot', $full_response, null, $rag_context_for_storage);
8338 - }
8339 -
8340 - return true; // Indicate streaming completed successfully
8341 -
8342 - } catch (Exception $e) {
8343 - //error_log("MxChat DeepSeek streaming exception: " . $e->getMessage());
8344 -
8345 - // Fallback to regular response
8346 - $regular_response = $this->mxchat_generate_response_deepseek(
8347 - $selected_model,
8348 - $deepseek_api_key,
8349 - $conversation_history,
8350 - $relevant_content
8351 - );
8352 -
8353 - // Handle error response from regular function
8354 - if (is_array($regular_response) && isset($regular_response['error'])) {
8355 - if ($testing_data !== null) {
8356 - $regular_response['testing_data'] = $testing_data;
8357 - }
8358 - header('Content-Type: application/json');
8359 - echo json_encode($regular_response);
8360 - return true;
8361 - }
8362 -
8363 - $response_data = [
8364 - 'text' => $regular_response,
8365 - 'html' => '',
8366 - 'session_id' => $session_id
8367 - ];
8368 -
8369 - if ($testing_data !== null) {
8370 - $response_data['testing_data'] = $testing_data;
8371 - //error_log("MxChat Testing: Added testing data to DeepSeek exception fallback");
8372 - }
8373 -
8374 - header('Content-Type: application/json');
8375 - echo json_encode($response_data);
8376 - return true;
8377 - }
8378 -}
8379 -
8380 -
8381 -private function mxchat_generate_response_openrouter($selected_model, $openrouter_api_key, $conversation_history, $relevant_content) {
8382 - try {
8383 - if (!is_array($conversation_history)) {
8384 - $conversation_history = array();
8385 - }
8386 -
8387 - $bot_id = $this->get_current_bot_id('');
8388 - $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
8389 -
8390 - $formatted_conversation = array();
8391 -
8392 - $formatted_conversation[] = array(
8393 - 'role' => 'system',
8394 - 'content' => $system_prompt_instructions . " " . $relevant_content
8395 - );
8396 -
8397 - foreach ($conversation_history as $message) {
8398 - if (is_array($message) && isset($message['role']) && isset($message['content'])) {
8399 - $role = $message['role'];
8400 -
8401 - if ($role === 'bot' || $role === 'agent') {
8402 - $role = 'assistant';
8403 - }
8404 - if (!in_array($role, ['system', 'assistant', 'user'])) {
8405 - $role = 'user';
8406 - }
8407 -
8408 - $formatted_conversation[] = array(
8409 - 'role' => $role,
8410 - 'content' => $message['content']
8411 - );
8412 - }
8413 - }
8414 -
8415 - $body = json_encode([
8416 - 'model' => $selected_model,
8417 - 'messages' => $formatted_conversation,
8418 - 'temperature' => 1,
8419 - ]);
8420 -
8421 - $args = [
8422 - 'body' => $body,
8423 - 'headers' => [
8424 - 'Content-Type' => 'application/json',
8425 - 'Authorization' => 'Bearer ' . $openrouter_api_key,
8426 - 'HTTP-Referer' => home_url(),
8427 - 'X-Title' => get_bloginfo('name'),
8428 - ],
8429 - 'timeout' => 60,
8430 - 'redirection' => 5,
8431 - 'blocking' => true,
8432 - 'httpversion' => '1.0',
8433 - 'sslverify' => true,
8434 - ];
8435 -
8436 - $response = wp_remote_post('https://openrouter.ai/api/v1/chat/completions', $args);
8437 -
8438 - if (is_wp_error($response)) {
8439 - $error_message = $response->get_error_message();
8440 - return [
8441 - 'error' => esc_html__('Connection error when contacting OpenRouter: ', 'mxchat') . esc_html($error_message),
8442 - 'error_code' => 'openrouter_connection_error',
8443 - 'provider' => 'openrouter'
8444 - ];
8445 - }
8446 -
8447 - $status_code = wp_remote_retrieve_response_code($response);
8448 - if ($status_code !== 200) {
8449 - $response_body = wp_remote_retrieve_body($response);
8450 - $decoded_response = json_decode($response_body, true);
8451 -
8452 - $error_message = isset($decoded_response['error']['message'])
8453 - ? $decoded_response['error']['message']
8454 - : 'HTTP Error ' . $status_code;
8455 -
8456 - return [
8457 - 'error' => esc_html__('OpenRouter API error: ', 'mxchat') . esc_html($error_message),
8458 - 'error_code' => 'openrouter_api_error',
8459 - 'provider' => 'openrouter',
8460 - 'status_code' => $status_code
8461 - ];
8462 - }
8463 -
8464 - $response_body = wp_remote_retrieve_body($response);
8465 - $decoded_response = json_decode($response_body, true);
8466 -
8467 - if (isset($decoded_response['choices'][0]['message']['content'])) {
8468 - return trim($decoded_response['choices'][0]['message']['content']);
8469 - } else {
8470 - return [
8471 - 'error' => esc_html__('Unexpected response format from OpenRouter.', 'mxchat'),
8472 - 'error_code' => 'openrouter_response_format_error',
8473 - 'provider' => 'openrouter'
8474 - ];
8475 - }
8476 - } catch (Exception $e) {
8477 - return [
8478 - 'error' => esc_html__('System error when processing OpenRouter request: ', 'mxchat') . esc_html($e->getMessage()),
8479 - 'error_code' => 'openrouter_exception',
8480 - 'provider' => 'openrouter'
8481 - ];
8482 - }
8483 -}
8484 -private function mxchat_generate_response_claude($selected_model, $claude_api_key, $conversation_history, $relevant_content) {
8485 -
8486 - // Get bot ID from session or request
8487 - $bot_id = $this->get_current_bot_id($session_id);
8488 -
8489 - // Get system prompt instructions using centralized function
8490 - $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
8491 -
8492 - // Clean and validate conversation history
8493 - foreach ($conversation_history as &$message) {
8494 - // Convert bot and agent roles to assistant
8495 - if ($message['role'] === 'bot' || $message['role'] === 'agent') {
8496 - $message['role'] = 'assistant';
8497 - }
8498 -
8499 - // Remove unsupported roles - Claude only supports 'assistant' and 'user'
8500 - if (!in_array($message['role'], ['assistant', 'user'])) {
8501 - $message['role'] = 'user';
8502 - }
8503 -
8504 - // Ensure content field exists
8505 - if (!isset($message['content']) || empty($message['content'])) {
8506 - $message['content'] = '';
8507 - }
8508 -
8509 - // Remove any unsupported fields
8510 - $message = array_intersect_key($message, array_flip(['role', 'content']));
8511 - }
8512 -
8513 - // Add relevant content as the latest user message
8514 - $conversation_history[] = [
8515 - 'role' => 'user',
8516 - 'content' => $relevant_content
8517 - ];
8518 -
8519 - // Build request body
8520 - $body = json_encode([
8521 - 'model' => $selected_model,
8522 - 'max_tokens' => 1000,
8523 - 'temperature' => 0.8,
8524 - 'messages' => $conversation_history,
8525 - 'system' => $system_prompt_instructions
8526 - ]);
8527 -
8528 - // Set up API request
8529 - $args = [
8530 - 'body' => $body,
8531 - 'headers' => [
8532 - 'Content-Type' => 'application/json',
8533 - 'x-api-key' => $claude_api_key,
8534 - 'anthropic-version' => '2023-06-01'
8535 - ],
8536 - 'timeout' => 60,
8537 - 'redirection' => 5,
8538 - 'blocking' => true,
8539 - 'httpversion' => '1.0',
8540 - 'sslverify' => true,
8541 - ];
8542 -
8543 - // Make API request
8544 - $response = wp_remote_post('https://api.anthropic.com/v1/messages', $args);
8545 -
8546 - // Check for WordPress errors
8547 - if (is_wp_error($response)) {
8548 - //error_log("Claude API request error: " . $response->get_error_message());
8549 - return "Sorry, there was an error connecting to the API.";
8550 - }
8551 -
8552 - // Check HTTP response code
8553 - $http_code = wp_remote_retrieve_response_code($response);
8554 - if ($http_code !== 200) {
8555 - $error_body = wp_remote_retrieve_body($response);
8556 - //error_log("Claude API HTTP error: " . $http_code . " - " . $error_body);
8557 -
8558 - // Try to extract error message from response
8559 - $error_data = json_decode($error_body, true);
8560 - $error_message = isset($error_data['error']['message']) ?
8561 - $error_data['error']['message'] :
8562 - "HTTP error " . $http_code;
8563 -
8564 - return "Sorry, the API returned an error: " . $error_message;
8565 - }
8566 -
8567 - // Parse response
8568 - $response_body = json_decode(wp_remote_retrieve_body($response), true);
8569 -
8570 - // Check for JSON decode errors
8571 - if (json_last_error() !== JSON_ERROR_NONE) {
8572 - //error_log("Claude API JSON decode error: " . json_last_error_msg());
8573 - return "Sorry, there was an error processing the API response.";
8574 - }
8575 -
8576 - // Extract and validate response content
8577 - if (isset($response_body['content']) &&
8578 - is_array($response_body['content']) &&
8579 - !empty($response_body['content']) &&
8580 - isset($response_body['content'][0]['text'])) {
8581 - return trim($response_body['content'][0]['text']);
8582 - }
8583 -
8584 - // Log unexpected response format
8585 - //error_log("Claude API unexpected response format: " . print_r($response_body, true));
8586 - return "Sorry, I received an unexpected response format from the API.";
8587 -}
8588 -private function mxchat_generate_response_openai($selected_model, $api_key, $conversation_history, $relevant_content) {
8589 - try {
8590 - // Ensure conversation_history is an array
8591 - if (!is_array($conversation_history)) {
8592 - $conversation_history = array();
8593 - }
8594 -
8595 - // Get bot ID from session or request
8596 - $bot_id = $this->get_current_bot_id('');
8597 -
8598 - // Get system prompt instructions using centralized function
8599 - $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
8600 -
8601 - // Create a new array for the formatted conversation
8602 - $formatted_conversation = array();
8603 -
8604 - // Add system message first
8605 - $formatted_conversation[] = array(
8606 - 'role' => 'system',
8607 - 'content' => $system_prompt_instructions . " " . $relevant_content
8608 - );
8609 -
8610 - // Add the rest of the conversation history
8611 - foreach ($conversation_history as $message) {
8612 - if (is_array($message) && isset($message['role']) && isset($message['content'])) {
8613 - $role = $message['role'];
8614 -
8615 - // Convert roles to supported format
8616 - if ($role === 'bot' || $role === 'agent') {
8617 - $role = 'assistant';
8618 - }
8619 - if (!in_array($role, ['system', 'assistant', 'user', 'function', 'tool'])) {
8620 - $role = 'user';
8621 - }
8622 -
8623 - $formatted_conversation[] = array(
8624 - 'role' => $role,
8625 - 'content' => $message['content']
8626 - );
8627 - }
8628 - }
8629 -
8630 - // Check if this is a GPT-5 model (supports reasoning_effort parameter)
8631 - $is_gpt5_model = (
8632 - strpos($selected_model, 'gpt-5') === 0 ||
8633 - $selected_model === 'gpt-5.2' ||
8634 - $selected_model === 'gpt-5.1-2025-11-13' ||
8635 - $selected_model === 'gpt-5' ||
8636 - $selected_model === 'gpt-5-mini' ||
8637 - $selected_model === 'gpt-5-nano'
8638 - );
8639 -
8640 - // Build request body with optimal settings for fast responses
8641 - $request_body = [
8642 - 'model' => $selected_model,
8643 - 'messages' => $formatted_conversation,
8644 - 'temperature' => 1,
8645 - 'stream' => false
8646 - ];
8647 -
8648 - // Add reasoning_effort only for GPT-5 models that support it
8649 - // These chat models don't support reasoning_effort parameter
8650 - $no_reasoning_models = array('gpt-5.2', 'gpt-5.1-chat-latest', 'gpt-5.3-chat-latest', 'gpt-5.4-mini', 'gpt-5.4-nano');
8651 - if ($is_gpt5_model && !in_array($selected_model, $no_reasoning_models, true)) {
8652 - // GPT-5.1 uses 'low' instead of 'minimal'
8653 - if ($selected_model === 'gpt-5.1-2025-11-13') {
8654 - $request_body['reasoning_effort'] = 'low';
8655 - } elseif ($selected_model === 'gpt-5.4') {
8656 - $request_body['reasoning_effort'] = 'none';
8657 - } else {
8658 - $request_body['reasoning_effort'] = 'minimal';
8659 - }
8660 - }
8661 -
8662 - $body = json_encode($request_body);
8663 -
8664 - $args = [
8665 - 'body' => $body,
8666 - 'headers' => [
8667 - 'Content-Type' => 'application/json',
8668 - 'Authorization' => 'Bearer ' . $api_key,
8669 - ],
8670 - 'timeout' => 60,
8671 - 'redirection' => 5,
8672 - 'blocking' => true,
8673 - 'httpversion' => '1.0',
8674 - 'sslverify' => true,
8675 - ];
8676 -
8677 - $response = wp_remote_post('https://api.openai.com/v1/chat/completions', $args);
8678 -
8679 - if (is_wp_error($response)) {
8680 - $error_message = $response->get_error_message();
8681 - return [
8682 - 'error' => esc_html__('Connection error when contacting OpenAI: ', 'mxchat') . esc_html($error_message),
8683 - 'error_code' => 'openai_connection_error',
8684 - 'provider' => 'openai'
8685 - ];
8686 - }
8687 -
8688 - $status_code = wp_remote_retrieve_response_code($response);
8689 - if ($status_code !== 200) {
8690 - $response_body = wp_remote_retrieve_body($response);
8691 - $decoded_response = json_decode($response_body, true);
8692 -
8693 - $error_message = isset($decoded_response['error']['message'])
8694 - ? $decoded_response['error']['message']
8695 - : 'HTTP Error ' . $status_code;
8696 -
8697 - $error_type = isset($decoded_response['error']['type'])
8698 - ? $decoded_response['error']['type']
8699 - : 'unknown';
8700 -
8701 - // Handle specific error types
8702 - switch ($error_type) {
8703 - case 'invalid_request_error':
8704 - if (strpos($error_message, 'API key') !== false) {
8705 - return [
8706 - 'error' => esc_html__('Invalid OpenAI API key. Please check your API key configuration.', 'mxchat'),
8707 - 'error_code' => 'openai_invalid_api_key',
8708 - 'provider' => 'openai'
8709 - ];
8710 - }
8711 - break;
8712 -
8713 - case 'authentication_error':
8714 - return [
8715 - 'error' => esc_html__('Authentication failed with OpenAI. Please check your API key.', 'mxchat'),
8716 - 'error_code' => 'openai_auth_error',
8717 - 'provider' => 'openai'
8718 - ];
8719 -
8720 - case 'rate_limit_exceeded':
8721 - return [
8722 - 'error' => esc_html__('OpenAI rate limit exceeded. Please try again later.', 'mxchat'),
8723 - 'error_code' => 'openai_rate_limit',
8724 - 'provider' => 'openai'
8725 - ];
8726 -
8727 - case 'quota_exceeded':
8728 - return [
8729 - 'error' => esc_html__('OpenAI API quota exceeded. Please check your billing details.', 'mxchat'),
8730 - 'error_code' => 'openai_quota_exceeded',
8731 - 'provider' => 'openai'
8732 - ];
8733 - }
8734 -
8735 - // Generic error fallback
8736 - return [
8737 - 'error' => esc_html__('OpenAI API error: ', 'mxchat') . esc_html($error_message),
8738 - 'error_code' => 'openai_api_error',
8739 - 'provider' => 'openai',
8740 - 'status_code' => $status_code
8741 - ];
8742 - }
8743 -
8744 - $response_body = wp_remote_retrieve_body($response);
8745 - $decoded_response = json_decode($response_body, true);
8746 -
8747 - if (isset($decoded_response['choices'][0]['message']['content'])) {
8748 - return trim($decoded_response['choices'][0]['message']['content']);
8749 - } else {
8750 - return [
8751 - 'error' => esc_html__('Unexpected response format from OpenAI.', 'mxchat'),
8752 - 'error_code' => 'openai_response_format_error',
8753 - 'provider' => 'openai'
8754 - ];
8755 - }
8756 - } catch (Exception $e) {
8757 - return [
8758 - 'error' => esc_html__('System error when processing OpenAI request: ', 'mxchat') . esc_html($e->getMessage()),
8759 - 'error_code' => 'openai_exception',
8760 - 'provider' => 'openai'
8761 - ];
8762 - }
8763 -}
8764 -
8765 -private function mxchat_generate_response_xai($selected_model, $xai_api_key, $conversation_history, $relevant_content) {
8766 - try {
8767 - // Get bot ID from session or request
8768 - $bot_id = $this->get_current_bot_id($session_id);
8769 -
8770 - // Get system prompt instructions using centralized function
8771 - $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
8772 -
8773 - // Add system prompt to relevant content
8774 - $content_with_instructions = $system_prompt_instructions . " " . $relevant_content;
8775 -
8776 - // Prepend system instructions to the conversation history
8777 - array_unshift($conversation_history, [
8778 - 'role' => 'system',
8779 - 'content' => "Here are your instructions: " . $content_with_instructions
8780 - ]);
8781 -
8782 - // Ensure consistency: Replace 'bot' and 'agent' roles with supported values
8783 - foreach ($conversation_history as &$message) {
8784 - if ($message['role'] === 'bot') {
8785 - $message['role'] = 'assistant';
8786 - } elseif ($message['role'] === 'agent') {
8787 - // Tag the message as coming from a live agent
8788 - $message['role'] = 'assistant';
8789 - if (!isset($message['metadata'])) {
8790 - $message['metadata'] = ['source' => 'live_agent'];
8791 - }
8792 - }
8793 -
8794 - // Ensure all roles are valid
8795 - if (!in_array($message['role'], ['system', 'assistant', 'user', 'function', 'tool'])) {
8796 - $message['role'] = 'user'; // Default to 'user'
8797 - }
8798 - }
8799 -
8800 - // Build the request body
8801 - $body = json_encode([
8802 - 'model' => $selected_model,
8803 - 'messages' => $conversation_history,
8804 - 'temperature' => 0.8,
8805 - 'stream' => false
8806 - ]);
8807 -
8808 - // Set up the API request
8809 - $args = [
8810 - 'body' => $body,
8811 - 'headers' => [
8812 - 'Content-Type' => 'application/json',
8813 - 'Authorization' => 'Bearer ' . $xai_api_key,
8814 - ],
8815 - 'timeout' => 60,
8816 - 'redirection' => 5,
8817 - 'blocking' => true,
8818 - 'httpversion' => '1.0',
8819 - 'sslverify' => true,
8820 - ];
8821 -
8822 - // Make the API request
8823 - $response = wp_remote_post('https://api.x.ai/v1/chat/completions', $args);
8824 -
8825 - // Process the response
8826 - if (is_wp_error($response)) {
8827 - $error_message = $response->get_error_message();
8828 - //error_log('X.AI API Error: ' . $error_message);
8829 - return [
8830 - 'error' => esc_html__('Connection error when contacting X.AI: ', 'mxchat') . esc_html($error_message),
8831 - 'error_code' => 'xai_connection_error',
8832 - 'provider' => 'xai'
8833 - ];
8834 - }
8835 -
8836 - $status_code = wp_remote_retrieve_response_code($response);
8837 - if ($status_code !== 200) {
8838 - $response_body = wp_remote_retrieve_body($response);
8839 - $decoded_response = json_decode($response_body, true);
8840 -
8841 - // Log the full response for debugging
8842 - //error_log('X.AI Error Response: ' . print_r($decoded_response, true));
8843 -
8844 - // Extract error message from X.AI's specific format
8845 - $error_message = '';
8846 -
8847 - // Check for direct error string (as seen in your logs)
8848 - if (isset($decoded_response['error']) && is_string($decoded_response['error'])) {
8849 - $error_message = $decoded_response['error'];
8850 - }
8851 - // Check for nested error object (OpenAI style)
8852 - elseif (isset($decoded_response['error']['message'])) {
8853 - $error_message = $decoded_response['error']['message'];
8854 - }
8855 - // Check for top-level message
8856 - elseif (isset($decoded_response['message'])) {
8857 - $error_message = $decoded_response['message'];
8858 - }
8859 - // Fallback
8860 - else {
8861 - $error_message = 'HTTP Error ' . $status_code;
8862 - }
8863 -
8864 - //error_log('X.AI API HTTP Error: ' . $status_code . ' - ' . $error_message);
8865 -
8866 - // Check for API key errors using string matching
8867 - if (stripos($error_message, 'api key') !== false ||
8868 - stripos($error_message, 'incorrect api key') !== false ||
8869 - stripos($error_message, 'invalid api key') !== false) {
8870 - return [
8871 - 'error' => esc_html__('Invalid X.AI API key. Please check your API key configuration.', 'mxchat'),
8872 - 'error_code' => 'xai_invalid_api_key',
8873 - 'provider' => 'xai'
8874 - ];
8875 - }
8876 -
8877 - // Authentication errors
8878 - if ($status_code === 401 || $status_code === 403 ||
8879 - stripos($error_message, 'auth') !== false) {
8880 - return [
8881 - 'error' => esc_html__('Authentication failed with X.AI. Please check your API key.', 'mxchat'),
8882 - 'error_code' => 'xai_auth_error',
8883 - 'provider' => 'xai'
8884 - ];
8885 - }
8886 -
8887 - // Model errors
8888 - if (stripos($error_message, 'model') !== false) {
8889 - return [
8890 - 'error' => esc_html__('Invalid model specified for X.AI. Please check your model configuration.', 'mxchat'),
8891 - 'error_code' => 'xai_invalid_model',
8892 - 'provider' => 'xai'
8893 - ];
8894 - }
8895 -
8896 - // Rate limit errors
8897 - if ($status_code === 429 ||
8898 - stripos($error_message, 'rate') !== false ||
8899 - stripos($error_message, 'limit') !== false) {
8900 - return [
8901 - 'error' => esc_html__('X.AI rate limit exceeded. Please try again later.', 'mxchat'),
8902 - 'error_code' => 'xai_rate_limit',
8903 - 'provider' => 'xai'
8904 - ];
8905 - }
8906 -
8907 - // Quota errors
8908 - if (stripos($error_message, 'quota') !== false ||
8909 - stripos($error_message, 'billing') !== false) {
8910 - return [
8911 - 'error' => esc_html__('X.AI API quota exceeded. Please check your billing details.', 'mxchat'),
8912 - 'error_code' => 'xai_quota_exceeded',
8913 - 'provider' => 'xai'
8914 - ];
8915 - }
8916 -
8917 - // Server errors
8918 - if ($status_code >= 500) {
8919 - return [
8920 - 'error' => esc_html__('X.AI service is currently unavailable. Please try again later.', 'mxchat'),
8921 - 'error_code' => 'xai_service_unavailable',
8922 - 'provider' => 'xai'
8923 - ];
8924 - }
8925 -
8926 - // Generic error fallback with the actual error message
8927 - return [
8928 - 'error' => esc_html__('X.AI API error: ', 'mxchat') . esc_html($error_message),
8929 - 'error_code' => 'xai_api_error',
8930 - 'provider' => 'xai',
8931 - 'status_code' => $status_code
8932 - ];
8933 - }
8934 -
8935 - $response_body = wp_remote_retrieve_body($response);
8936 - $decoded_response = json_decode($response_body, true);
8937 -
8938 - if (isset($decoded_response['choices'][0]['message']['content'])) {
8939 - return trim($decoded_response['choices'][0]['message']['content']);
8940 - } else {
8941 - //error_log('X.AI API Response Format Error: ' . print_r($decoded_response, true));
8942 - return [
8943 - 'error' => esc_html__('Unexpected response format from X.AI.', 'mxchat'),
8944 - 'error_code' => 'xai_response_format_error',
8945 - 'provider' => 'xai'
8946 - ];
8947 - }
8948 -} catch (Exception $e) {
8949 - //error_log('X.AI Exception: ' . $e->getMessage());
8950 - return [
8951 - 'error' => esc_html__('System error when processing X.AI request: ', 'mxchat') . esc_html($e->getMessage()),
8952 - 'error_code' => 'xai_exception',
8953 - 'provider' => 'xai'
8954 - ];
8955 -}
8956 -
8957 -
8958 -}
8959 -private function mxchat_generate_response_deepseek($selected_model, $deepseek_api_key, $conversation_history, $relevant_content) {
8960 - try {
8961 - // Ensure conversation_history is an array
8962 - if (!is_array($conversation_history)) {
8963 - $conversation_history = array();
8964 - }
8965 -
8966 - // Get bot ID from session or request
8967 - $bot_id = $this->get_current_bot_id($session_id);
8968 -
8969 - // Get system prompt instructions using centralized function
8970 - $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
8971 -
8972 - // Create a new array for the formatted conversation
8973 - $formatted_conversation = array();
8974 -
8975 - // Add system message first
8976 - $formatted_conversation[] = array(
8977 - 'role' => 'system',
8978 - 'content' => $system_prompt_instructions . " " . $relevant_content
8979 - );
8980 -
8981 - // Add the rest of the conversation history
8982 - foreach ($conversation_history as $message) {
8983 - if (is_array($message) && isset($message['role']) && isset($message['content'])) {
8984 - $role = $message['role'];
8985 -
8986 - // Convert roles to supported format
8987 - if ($role === 'bot' || $role === 'agent') {
8988 - $role = 'assistant';
8989 - }
8990 - if (!in_array($role, ['system', 'assistant', 'user', 'function', 'tool'])) {
8991 - $role = 'user';
8992 - }
8993 -
8994 - $formatted_conversation[] = array(
8995 - 'role' => $role,
8996 - 'content' => $message['content']
8997 - );
8998 - }
8999 - }
9000 -
9001 - $body = json_encode([
9002 - 'model' => $selected_model,
9003 - 'messages' => $formatted_conversation,
9004 - 'temperature' => 0.8,
9005 - 'stream' => false
9006 - ]);
9007 -
9008 - $args = [
9009 - 'body' => $body,
9010 - 'headers' => [
9011 - 'Content-Type' => 'application/json',
9012 - 'Authorization' => 'Bearer ' . $deepseek_api_key,
9013 - ],
9014 - 'timeout' => 60,
9015 - 'redirection' => 5,
9016 - 'blocking' => true,
9017 - 'httpversion' => '1.0',
9018 - 'sslverify' => true,
9019 - ];
9020 -
9021 - $response = wp_remote_post('https://api.deepseek.com/v1/chat/completions', $args);
9022 -
9023 - if (is_wp_error($response)) {
9024 - $error_message = $response->get_error_message();
9025 - //error_log('DeepSeek API Error: ' . $error_message);
9026 - return [
9027 - 'error' => esc_html__('Connection error when contacting DeepSeek: ', 'mxchat') . esc_html($error_message),
9028 - 'error_code' => 'deepseek_connection_error',
9029 - 'provider' => 'deepseek'
9030 - ];
9031 - }
9032 -
9033 - $status_code = wp_remote_retrieve_response_code($response);
9034 - if ($status_code !== 200) {
9035 - $response_body = wp_remote_retrieve_body($response);
9036 - $decoded_response = json_decode($response_body, true);
9037 -
9038 - $error_message = isset($decoded_response['error']['message'])
9039 - ? $decoded_response['error']['message']
9040 - : 'HTTP Error ' . $status_code;
9041 -
9042 - $error_type = isset($decoded_response['error']['type'])
9043 - ? $decoded_response['error']['type']
9044 - : 'unknown';
9045 -
9046 - //error_log('DeepSeek API HTTP Error: ' . $status_code . ' - ' . $error_message);
9047 -
9048 - // Handle specific error types
9049 - switch ($status_code) {
9050 - case 401:
9051 - return [
9052 - 'error' => esc_html__('Authentication failed with DeepSeek. Please check your API key.', 'mxchat'),
9053 - 'error_code' => 'deepseek_auth_error',
9054 - 'provider' => 'deepseek'
9055 - ];
9056 -
9057 - case 400:
9058 - if (strpos($error_message, 'API key') !== false) {
9059 - return [
9060 - 'error' => esc_html__('Invalid DeepSeek API key. Please check your API key configuration.', 'mxchat'),
9061 - 'error_code' => 'deepseek_invalid_api_key',
9062 - 'provider' => 'deepseek'
9063 - ];
9064 - }
9065 - break;
9066 -
9067 - case 429:
9068 - if (strpos($error_message, 'quota') !== false) {
9069 - return [
9070 - 'error' => esc_html__('DeepSeek API quota exceeded. Please check your billing details.', 'mxchat'),
9071 - 'error_code' => 'deepseek_quota_exceeded',
9072 - 'provider' => 'deepseek'
9073 - ];
9074 - } else {
9075 - return [
9076 - 'error' => esc_html__('DeepSeek rate limit exceeded. Please try again later.', 'mxchat'),
9077 - 'error_code' => 'deepseek_rate_limit',
9078 - 'provider' => 'deepseek'
9079 - ];
9080 - }
9081 -
9082 - case 500:
9083 - case 502:
9084 - case 503:
9085 - case 504:
9086 - return [
9087 - 'error' => esc_html__('DeepSeek service is currently unavailable. Please try again later.', 'mxchat'),
9088 - 'error_code' => 'deepseek_service_unavailable',
9089 - 'provider' => 'deepseek'
9090 - ];
9091 - }
9092 -
9093 - // Generic error fallback
9094 - return [
9095 - 'error' => esc_html__('DeepSeek API error: ', 'mxchat') . esc_html($error_message),
9096 - 'error_code' => 'deepseek_api_error',
9097 - 'provider' => 'deepseek',
9098 - 'status_code' => $status_code
9099 - ];
9100 - }
9101 -
9102 - $response_body = wp_remote_retrieve_body($response);
9103 - $decoded_response = json_decode($response_body, true);
9104 -
9105 - if (isset($decoded_response['choices'][0]['message']['content'])) {
9106 - return trim($decoded_response['choices'][0]['message']['content']);
9107 - } else {
9108 - //error_log('DeepSeek API Response Format Error: ' . print_r($decoded_response, true));
9109 - return [
9110 - 'error' => esc_html__('Unexpected response format from DeepSeek.', 'mxchat'),
9111 - 'error_code' => 'deepseek_response_format_error',
9112 - 'provider' => 'deepseek'
9113 - ];
9114 - }
9115 - } catch (Exception $e) {
9116 - //error_log('DeepSeek Exception: ' . $e->getMessage());
9117 - return [
9118 - 'error' => esc_html__('System error when processing DeepSeek request: ', 'mxchat') . esc_html($e->getMessage()),
9119 - 'error_code' => 'deepseek_exception',
9120 - 'provider' => 'deepseek'
9121 - ];
9122 - }
9123 -}
9124 -private function mxchat_generate_response_gemini($selected_model, $gemini_api_key, $conversation_history, $relevant_content) {
9125 - // Get bot ID from session or request
9126 - $bot_id = $this->get_current_bot_id($session_id);
9127 -
9128 - // Get system prompt instructions using centralized function
9129 - $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
9130 -
9131 - // Add system prompt to relevant content
9132 - $content_with_instructions = $system_prompt_instructions . " " . $relevant_content;
9133 -
9134 - // Format messages for Gemini API
9135 - $formatted_messages = [];
9136 -
9137 - // Add system message as the first user message with role prefix
9138 - // Note: Gemini doesn't have a dedicated system role, so we use a prefixed user message
9139 - $formatted_messages[] = [
9140 - 'role' => 'user',
9141 - 'parts' => [
9142 - ['text' => "[System Instructions] " . $content_with_instructions]
9143 - ]
9144 - ];
9145 -
9146 - // Add model response to acknowledge system instructions
9147 - $formatted_messages[] = [
9148 - 'role' => 'model',
9149 - 'parts' => [
9150 - ['text' => "I understand and will follow these instructions."]
9151 - ]
9152 - ];
9153 -
9154 - // Process the rest of the conversation history
9155 - $current_role = null;
9156 - $current_parts = [];
9157 -
9158 - foreach ($conversation_history as $message) {
9159 - // Skip the first system message as we already handled it
9160 - if ($message['role'] === 'system') {
9161 - continue;
9162 - }
9163 -
9164 - // Map roles to Gemini format
9165 - $gemini_role = '';
9166 - if ($message['role'] === 'user') {
9167 - $gemini_role = 'user';
9168 - } else if (in_array($message['role'], ['assistant', 'bot', 'agent'])) {
9169 - $gemini_role = 'model';
9170 - } else {
9171 - // Skip unsupported roles
9172 - continue;
9173 - }
9174 -
9175 - // If we have a new role, add the previous message
9176 - if ($current_role !== null && $current_role !== $gemini_role && !empty($current_parts)) {
9177 - $formatted_messages[] = [
9178 - 'role' => $current_role,
9179 - 'parts' => $current_parts
9180 - ];
9181 - $current_parts = [];
9182 - }
9183 -
9184 - // Set current role and add text to parts
9185 - $current_role = $gemini_role;
9186 - $current_parts[] = ['text' => $message['content']];
9187 - }
9188 -
9189 - // Add the last message if there's content
9190 - if ($current_role !== null && !empty($current_parts)) {
9191 - $formatted_messages[] = [
9192 - 'role' => $current_role,
9193 - 'parts' => $current_parts
9194 - ];
9195 - }
9196 -
9197 - // Build the request body
9198 - $body = json_encode([
9199 - 'contents' => $formatted_messages,
9200 - 'generationConfig' => [
9201 - 'temperature' => 0.7,
9202 - 'topP' => 0.95,
9203 - 'topK' => 40,
9204 - 'maxOutputTokens' => 8192,
9205 - ],
9206 - 'safetySettings' => [
9207 - [
9208 - 'category' => 'HARM_CATEGORY_HARASSMENT',
9209 - 'threshold' => 'BLOCK_MEDIUM_AND_ABOVE'
9210 - ],
9211 - [
9212 - 'category' => 'HARM_CATEGORY_HATE_SPEECH',
9213 - 'threshold' => 'BLOCK_MEDIUM_AND_ABOVE'
9214 - ],
9215 - [
9216 - 'category' => 'HARM_CATEGORY_SEXUALLY_EXPLICIT',
9217 - 'threshold' => 'BLOCK_MEDIUM_AND_ABOVE'
9218 - ],
9219 - [
9220 - 'category' => 'HARM_CATEGORY_DANGEROUS_CONTENT',
9221 - 'threshold' => 'BLOCK_MEDIUM_AND_ABOVE'
9222 - ]
9223 - ]
9224 - ]);
9225 -
9226 - // Prepare the API endpoint
9227 - // Use v1beta for preview models (Gemini 3, experimental), v1 for stable models
9228 - $api_version = (strpos($selected_model, 'preview') !== false || strpos($selected_model, 'exp') !== false) ? 'v1beta' : 'v1';
9229 - $api_endpoint = 'https://generativelanguage.googleapis.com/' . $api_version . '/models/' . $selected_model . ':generateContent?key=' . $gemini_api_key;
9230 -
9231 - // Set up the API request
9232 - $args = [
9233 - 'body' => $body,
9234 - 'headers' => [
9235 - 'Content-Type' => 'application/json',
9236 - ],
9237 - 'timeout' => 60,
9238 - 'redirection' => 5,
9239 - 'blocking' => true,
9240 - 'httpversion' => '1.0',
9241 - 'sslverify' => true,
9242 - ];
9243 -
9244 - // Make the API request
9245 - $response = wp_remote_post($api_endpoint, $args);
9246 -
9247 - // Process the response
9248 - if (is_wp_error($response)) {
9249 - return "Sorry, there was an error processing your request: " . $response->get_error_message();
9250 - }
9251 -
9252 - $response_body = json_decode(wp_remote_retrieve_body($response), true);
9253 -
9254 - // Handle potential errors in the response
9255 - if (isset($response_body['error'])) {
9256 - //error_log('Gemini API Error: ' . json_encode($response_body['error']));
9257 - return "Sorry, there was an error with the Gemini API: " .
9258 - (isset($response_body['error']['message']) ? $response_body['error']['message'] : 'Unknown error');
9259 - }
9260 -
9261 - // Extract the response text
9262 - if (isset($response_body['candidates'][0]['content']['parts'][0]['text'])) {
9263 - return trim($response_body['candidates'][0]['content']['parts'][0]['text']);
9264 - } else {
9265 - //error_log('Unexpected Gemini API response format: ' . json_encode($response_body));
9266 - return "Sorry, I couldn't process that request. The response format was unexpected.";
9267 - }
9268 -}
9269 -
9270 -
9271 -public function test_streaming_request() {
9272 - $options = get_option('mxchat_options', []);
9273 - $model = $options['model'] ?? 'gpt-5.1-chat-latest';
9274 -
9275 - // Detect provider from model prefix
9276 - $provider = strtolower(explode('-', $model)[0]);
9277 -
9278 - $sample_prompt = 'Hello! Can you stream this response back to me?';
9279 - $messages = [['role' => 'user', 'content' => $sample_prompt]];
9280 - $headers = [];
9281 - $body = [];
9282 - $url = '';
9283 - $api_key = '';
9284 -
9285 - switch ($provider) {
9286 - case 'gpt':
9287 - case 'o1':
9288 - $api_key = $options['api_key'] ?? '';
9289 - if (empty($api_key)) return '❌ Missing API key for OpenAI';
9290 - $url = 'https://api.openai.com/v1/chat/completions';
9291 - $headers = [
9292 - 'Content-Type: application/json',
9293 - 'Authorization: Bearer ' . $api_key
9294 - ];
9295 - $body = [
9296 - 'model' => $model,
9297 - 'messages' => $messages,
9298 - 'stream' => true
9299 - ];
9300 - break;
9301 -
9302 - case 'claude':
9303 - $api_key = $options['claude_api_key'] ?? '';
9304 - if (empty($api_key)) return '❌ Missing API key for Claude';
9305 - $url = 'https://api.anthropic.com/v1/messages';
9306 - $headers = [
9307 - 'Content-Type: application/json',
9308 - 'x-api-key: ' . $api_key,
9309 - 'anthropic-version: 2023-06-01'
9310 - ];
9311 - $body = [
9312 - 'model' => $model,
9313 - 'messages' => $messages,
9314 - 'max_tokens' => 100,
9315 - 'stream' => true
9316 - ];
9317 - break;
9318 -
9319 - case 'grok':
9320 - $api_key = $options['xai_api_key'] ?? '';
9321 - if (empty($api_key)) return '❌ Missing API key for X.AI';
9322 - $url = 'https://api.x.ai/v1/chat/completions';
9323 - $headers = [
9324 - 'Content-Type: application/json',
9325 - 'Authorization: Bearer ' . $api_key
9326 - ];
9327 - $body = [
9328 - 'model' => $model,
9329 - 'messages' => $messages,
9330 - 'stream' => true
9331 - ];
9332 - break;
9333 -
9334 - case 'deepseek':
9335 - if (empty($deepseek_api_key)) {
9336 - $error_response = [
9337 - 'error' => esc_html__('DeepSeek API key is not configured', 'mxchat'),
9338 - 'error_code' => 'missing_deepseek_api_key'
9339 - ];
9340 - if ($testing_data !== null) {
9341 - $error_response['testing_data'] = $testing_data;
9342 - }
9343 - return $error_response;
9344 - }
9345 - if ($streaming) {
9346 - return $this->mxchat_generate_response_deepseek_stream(
9347 - $selected_model,
9348 - $deepseek_api_key,
9349 - $conversation_history,
9350 - $relevant_content,
9351 - $session_id,
9352 - $testing_data // Pass testing data
9353 - );
9354 - } else {
9355 - $response = $this->mxchat_generate_response_deepseek(
9356 - $selected_model,
9357 - $deepseek_api_key,
9358 - $conversation_history,
9359 - $relevant_content
9360 - );
9361 - }
9362 - break;
9363 -
9364 - case 'gemini':
9365 - $api_key = $options['gemini_api_key'] ?? '';
9366 - if (empty($api_key)) return '❌ Missing API key for Gemini';
9367 - $url = 'https://generativelanguage.googleapis.com/v1beta/models/' . $model . ':streamGenerateContent?key=' . $api_key;
9368 - $headers = ['Content-Type: application/json'];
9369 - $body = [
9370 - 'contents' => [['role' => 'user', 'parts' => [['text' => $sample_prompt]]]],
9371 - 'generationConfig' => ['temperature' => 0.7]
9372 - ];
9373 - break;
9374 -
9375 - default:
9376 - return '❌ Unsupported provider: ' . $provider;
9377 - }
9378 -
9379 - // Do the actual streaming test
9380 - $ch = curl_init($url);
9381 - curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($body));
9382 - curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
9383 - curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
9384 - curl_setopt($ch, CURLOPT_TIMEOUT, 15);
9385 - curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
9386 -
9387 - $response = curl_exec($ch);
9388 - $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
9389 - $error = curl_error($ch);
9390 - curl_close($ch);
9391 -
9392 - if ($error) return "❌ cURL error: $error";
9393 - if ($http_code !== 200) {
9394 - $error_message = json_decode($response, true)['error']['message'] ?? 'Unknown';
9395 - return "❌ HTTP $http_code: $error_message";
9396 - }
9397 -
9398 - return true;
9399 -}
9400 -
9401 -public function mxchat_dismiss_pre_chat_message() {
9402 - // Get and sanitize the user identifier
9403 - $user_id = $this->mxchat_get_user_identifier();
9404 - $user_id = sanitize_key($user_id);
9405 -
9406 - // Set a transient to track that the user has dismissed the pre-chat message
9407 - $transient_key = 'mxchat_pre_chat_message_dismissed_' . $user_id;
9408 - set_transient($transient_key, true, DAY_IN_SECONDS);
9409 -
9410 - wp_send_json_success();
9411 -}
9412 -
9413 -public function mxchat_check_pre_chat_message_status() {
9414 - // Get and sanitize the user identifier
9415 - $user_id = $this->mxchat_get_user_identifier();
9416 - $user_id = sanitize_key($user_id);
9417 -
9418 - // Check if the transient exists (i.e., if the message was dismissed)
9419 - $transient_key = 'mxchat_pre_chat_message_dismissed_' . $user_id;
9420 - $dismissed = get_transient($transient_key);
9421 -
9422 - // Log the result to see if it's being set correctly
9423 - //error_log("Check pre-chat message dismissed for $user_id: " . ($dismissed ? 'Yes' : 'No'));
9424 -
9425 - if ($dismissed) {
9426 - wp_send_json_success(['dismissed' => true]);
9427 - } else {
9428 - wp_send_json_success(['dismissed' => false]);
9429 - }
9430 -
9431 - wp_die();
9432 -}
9433 -
9434 -private function mxchat_calculate_cosine_similarity($vectorA, $vectorB) {
9435 - if (!is_array($vectorA) || !is_array($vectorB) || empty($vectorA) || empty($vectorB)) {
9436 - return 0;
9437 - }
9438 -
9439 - $dotProduct = array_sum(array_map(function ($a, $b) {
9440 - return $a * $b;
9441 - }, $vectorA, $vectorB));
9442 - $normA = sqrt(array_sum(array_map(function ($a) {
9443 - return $a * $a;
9444 - }, $vectorA)));
9445 - $normB = sqrt(array_sum(array_map(function ($b) {
9446 - return $b * $b;
9447 - }, $vectorB)));
9448 -
9449 - if ($normA == 0 || $normB == 0) {
9450 - return 0;
9451 - }
9452 -
9453 - return $dotProduct / ($normA * $normB);
9454 - }
9455 -
9456 -
9457 -public function mxchat_enqueue_scripts_styles() {
9458 - // Fetch options from the database first to check loading strategy
9459 - $this->options = get_option('mxchat_options');
9460 - $loading_strategy = isset($this->options['script_loading_strategy']) ? $this->options['script_loading_strategy'] : 'default';
9461 -
9462 - // Always enqueue CSS immediately
9463 - wp_enqueue_style(
9464 - 'mxchat-chat-css',
9465 - plugin_dir_url(__FILE__) . '../css/chat-style.css',
9466 - array(),
9467 - MXCHAT_VERSION
9468 - );
9469 -
9470 - // Handle script loading based on strategy
9471 - if ($loading_strategy === 'default' || $loading_strategy === 'defer') {
9472 - // Enqueue the script normally
9473 - wp_enqueue_script(
9474 - 'mxchat-chat-js',
9475 - plugin_dir_url(__FILE__) . '../js/chat-script.js',
9476 - array('jquery'),
9477 - MXCHAT_VERSION,
9478 - true
9479 - );
9480 -
9481 - // Add defer attribute if strategy is 'defer'
9482 - if ($loading_strategy === 'defer') {
9483 - wp_script_add_data('mxchat-chat-js', 'strategy', 'defer');
9484 - }
9485 - } else {
9486 - // For delay or interaction-based loading, we'll use a custom loader
9487 - // Don't enqueue the main script - we'll load it dynamically
9488 - add_action('wp_footer', array($this, 'mxchat_output_delayed_script_loader'), 99);
9489 - }
9490 -
9491 - $prompts_options = get_option('mxchat_prompts_options', array());
9492 -
9493 - // Check if AI theme is active - if so, skip inline colors in JavaScript
9494 - $theme_options = get_option('mxchat_theme_options', array());
9495 - $ai_theme_active = !empty($theme_options['active_ai_theme_css']);
9496 - $has_bot_theme_assignments = !empty($theme_options['bot_theme_assignments']);
9497 - $skip_inline_colors = $ai_theme_active || $has_bot_theme_assignments;
9498 -
9499 - // Prepare settings for JavaScript
9500 - $style_settings = array(
9501 - 'ajax_url' => admin_url('admin-ajax.php'),
9502 - 'nonce' => wp_create_nonce('mxchat_chat_nonce'),
9503 - 'model' => isset($this->options['model']) ? $this->options['model'] : 'gpt-5.1-chat-latest',
9504 - 'enable_streaming_toggle' => isset($this->options['enable_streaming_toggle']) ? $this->options['enable_streaming_toggle'] : 'on',
9505 - 'contextual_awareness_toggle' => isset($this->options['contextual_awareness_toggle']) ? $this->options['contextual_awareness_toggle'] : 'off',
9506 - 'link_target_toggle' => $this->options['link_target_toggle'] ?? 'off',
9507 - 'rate_limit_message' => $this->options['rate_limit_message'] ?? 'Rate limit exceeded. Please try again later.',
9508 - 'complianz_toggle' => isset($this->options['complianz_toggle']) && $this->options['complianz_toggle'] === 'on',
9509 - 'user_message_bg_color' => $this->options['user_message_bg_color'] ?? '#fff',
9510 - 'user_message_font_color' => $this->options['user_message_font_color'] ?? '#212121',
9511 - 'bot_message_bg_color' => $this->options['bot_message_bg_color'] ?? '#212121',
9512 - 'bot_message_font_color' => $this->options['bot_message_font_color'] ?? '#fff',
9513 - 'top_bar_bg_color' => $this->options['top_bar_bg_color'] ?? '#212121',
9514 - 'send_button_font_color' => $this->options['send_button_font_color'] ?? '#212121',
9515 - 'close_button_color' => $this->options['close_button_color'] ?? '#fff',
9516 - 'chatbot_background_color' => $this->options['chatbot_background_color'] ?? '#212121',
9517 - 'chatbot_bg_color' => $this->options['chatbot_bg_color'] ?? '#fff',
9518 - 'icon_color' => $this->options['icon_color'] ?? '#fff',
9519 - 'chat_input_font_color' => $this->options['chat_input_font_color'] ?? '#212121',
9520 - 'chat_persistence_toggle' => $this->options['chat_persistence_toggle'] ?? 'off',
9521 - 'appendWidgetToBody' => $this->options['append_to_body'] ?? 'off',
9522 - 'live_agent_message_bg_color' => $this->options['live_agent_message_bg_color'] ?? '#ffffff',
9523 - 'live_agent_message_font_color' => $this->options['live_agent_message_font_color'] ?? '#333333',
9524 - 'chat_toolbar_toggle' => $this->options['chat_toolbar_toggle'] ?? 'off',
9525 - 'mode_indicator_bg_color' => $this->options['mode_indicator_bg_color'] ?? '#767676',
9526 - 'mode_indicator_font_color' => $this->options['mode_indicator_font_color'] ?? '#ffffff',
9527 - 'toolbar_icon_color' => $this->options['toolbar_icon_color'] ?? '#212121',
9528 - 'use_pinecone' => $prompts_options['mxchat_use_pinecone'] ?? '0',
9529 - 'email_collection_enabled' => $this->options['enable_email_block'] ?? 'off', // FIXED
9530 - 'initial_email_state' => null, // Also fixed this undefined variable
9531 - 'skip_email_check' => true,
9532 - 'pinecone_enabled' => isset($prompts_options['mxchat_use_pinecone']) && $prompts_options['mxchat_use_pinecone'] === '1',
9533 - 'skip_inline_colors' => $skip_inline_colors,
9534 - 'bot_theme_assignments' => $theme_options['bot_theme_assignments'] ?? array()
9535 - );
9536 -
9537 - // For normal/defer loading, use wp_localize_script
9538 - // For delayed loading, we store settings in a transient to be output inline
9539 - if ($loading_strategy === 'default' || $loading_strategy === 'defer') {
9540 - wp_localize_script('mxchat-chat-js', 'mxchatChat', $style_settings);
9541 - } else {
9542 - // Store settings for the delayed loader to use
9543 - set_transient('mxchat_delayed_settings_' . get_current_user_id(), $style_settings, 60);
9544 - }
9545 -}
9546 -
9547 -/**
9548 - * Output the delayed script loader for performance optimization
9549 - */
9550 -public function mxchat_output_delayed_script_loader() {
9551 - $this->options = get_option('mxchat_options');
9552 - $loading_strategy = isset($this->options['script_loading_strategy']) ? $this->options['script_loading_strategy'] : 'default';
9553 - $script_url = plugin_dir_url(__FILE__) . '../js/chat-script.js?ver=' . MXCHAT_VERSION;
9554 -
9555 - // Get the stored settings
9556 - $prompts_options = get_option('mxchat_prompts_options', array());
9557 - $theme_options = get_option('mxchat_theme_options', array());
9558 - $ai_theme_active = !empty($theme_options['active_ai_theme_css']);
9559 - $has_bot_theme_assignments = !empty($theme_options['bot_theme_assignments']);
9560 - $skip_inline_colors = $ai_theme_active || $has_bot_theme_assignments;
9561 -
9562 - $style_settings = array(
9563 - 'ajax_url' => admin_url('admin-ajax.php'),
9564 - 'nonce' => wp_create_nonce('mxchat_chat_nonce'),
9565 - 'model' => isset($this->options['model']) ? $this->options['model'] : 'gpt-5.1-chat-latest',
9566 - 'enable_streaming_toggle' => isset($this->options['enable_streaming_toggle']) ? $this->options['enable_streaming_toggle'] : 'on',
9567 - 'contextual_awareness_toggle' => isset($this->options['contextual_awareness_toggle']) ? $this->options['contextual_awareness_toggle'] : 'off',
9568 - 'link_target_toggle' => $this->options['link_target_toggle'] ?? 'off',
9569 - 'rate_limit_message' => $this->options['rate_limit_message'] ?? 'Rate limit exceeded. Please try again later.',
9570 - 'complianz_toggle' => isset($this->options['complianz_toggle']) && $this->options['complianz_toggle'] === 'on',
9571 - 'user_message_bg_color' => $this->options['user_message_bg_color'] ?? '#fff',
9572 - 'user_message_font_color' => $this->options['user_message_font_color'] ?? '#212121',
9573 - 'bot_message_bg_color' => $this->options['bot_message_bg_color'] ?? '#212121',
9574 - 'bot_message_font_color' => $this->options['bot_message_font_color'] ?? '#fff',
9575 - 'top_bar_bg_color' => $this->options['top_bar_bg_color'] ?? '#212121',
9576 - 'send_button_font_color' => $this->options['send_button_font_color'] ?? '#212121',
9577 - 'close_button_color' => $this->options['close_button_color'] ?? '#fff',
9578 - 'chatbot_background_color' => $this->options['chatbot_background_color'] ?? '#212121',
9579 - 'chatbot_bg_color' => $this->options['chatbot_bg_color'] ?? '#fff',
9580 - 'icon_color' => $this->options['icon_color'] ?? '#fff',
9581 - 'chat_input_font_color' => $this->options['chat_input_font_color'] ?? '#212121',
9582 - 'chat_persistence_toggle' => $this->options['chat_persistence_toggle'] ?? 'off',
9583 - 'appendWidgetToBody' => $this->options['append_to_body'] ?? 'off',
9584 - 'live_agent_message_bg_color' => $this->options['live_agent_message_bg_color'] ?? '#ffffff',
9585 - 'live_agent_message_font_color' => $this->options['live_agent_message_font_color'] ?? '#333333',
9586 - 'chat_toolbar_toggle' => $this->options['chat_toolbar_toggle'] ?? 'off',
9587 - 'mode_indicator_bg_color' => $this->options['mode_indicator_bg_color'] ?? '#767676',
9588 - 'mode_indicator_font_color' => $this->options['mode_indicator_font_color'] ?? '#ffffff',
9589 - 'toolbar_icon_color' => $this->options['toolbar_icon_color'] ?? '#212121',
9590 - 'use_pinecone' => $prompts_options['mxchat_use_pinecone'] ?? '0',
9591 - 'email_collection_enabled' => $this->options['enable_email_block'] ?? 'off',
9592 - 'initial_email_state' => null,
9593 - 'skip_email_check' => true,
9594 - 'pinecone_enabled' => isset($prompts_options['mxchat_use_pinecone']) && $prompts_options['mxchat_use_pinecone'] === '1',
9595 - 'skip_inline_colors' => $skip_inline_colors,
9596 - 'bot_theme_assignments' => $theme_options['bot_theme_assignments'] ?? array()
9597 - );
9598 -
9599 - // Determine delay time based on strategy
9600 - $delay_ms = 0;
9601 - switch ($loading_strategy) {
9602 - case 'delay_1s':
9603 - $delay_ms = 1000;
9604 - break;
9605 - case 'delay_3s':
9606 - $delay_ms = 3000;
9607 - break;
9608 - case 'delay_5s':
9609 - $delay_ms = 5000;
9610 - break;
9611 - }
9612 -
9613 - ?>
9614 - <script type="text/javascript">
9615 - (function() {
9616 - var mxchatLoaded = false;
9617 - var mxchatChat = <?php echo wp_json_encode($style_settings); ?>;
9618 - window.mxchatChat = mxchatChat;
9619 -
9620 - function loadMxChatScript() {
9621 - if (mxchatLoaded) return;
9622 - mxchatLoaded = true;
9623 -
9624 - function appendChatScript() {
9625 - var script = document.createElement('script');
9626 - script.src = <?php echo wp_json_encode($script_url); ?>;
9627 - script.type = 'text/javascript';
9628 - document.body.appendChild(script);
9629 - }
9630 -
9631 - if (typeof jQuery !== 'undefined') {
9632 - appendChatScript();
9633 - } else {
9634 - var jq = document.createElement('script');
9635 - jq.src = <?php echo wp_json_encode(includes_url('js/jquery/jquery.min.js')); ?>;
9636 - jq.onload = appendChatScript;
9637 - document.body.appendChild(jq);
9638 - }
9639 - }
9640 -
9641 - <?php if ($loading_strategy === 'on_interaction'): ?>
9642 - // Load on user interaction
9643 - var events = ['scroll', 'mousemove', 'touchstart', 'keydown', 'click'];
9644 - events.forEach(function(evt) {
9645 - window.addEventListener(evt, loadMxChatScript, {once: true, passive: true});
9646 - });
9647 - // Fallback: load after 8 seconds if no interaction
9648 - setTimeout(loadMxChatScript, 8000);
9649 - <?php else: ?>
9650 - // Load after specified delay
9651 - setTimeout(loadMxChatScript, <?php echo intval($delay_ms); ?>);
9652 - <?php endif; ?>
9653 - })();
9654 - </script>
9655 - <?php
9656 -}
9657 -
9658 -/**
9659 - * Setup the cron jobs for rate limits with guard against multiple calls
9660 - */
9661 -public function setup_rate_limit_cron_jobs() {
9662 - // Add a guard to prevent multiple rapid calls
9663 - $last_setup = get_transient('mxchat_cron_setup_guard');
9664 - if ($last_setup && (time() - $last_setup) < 60) {
9665 - // Don't run again if we ran less than 60 seconds ago
9666 - return;
9667 - }
9668 -
9669 - // Set the guard
9670 - set_transient('mxchat_cron_setup_guard', time(), 300); // 5 minutes
9671 -
9672 - try {
9673 - // First, check if WordPress cron is disabled
9674 - if (defined('DISABLE_WP_CRON') && DISABLE_WP_CRON) {
9675 - //error_log('MxChat: WordPress cron is disabled (DISABLE_WP_CRON = true), using fallback system');
9676 - $this->setup_fallback_rate_limit_system();
9677 - return;
9678 - }
9679 -
9680 - // Check if cron is already scheduled - if so, don't mess with it
9681 - if (wp_next_scheduled('mxchat_reset_rate_limits')) {
9682 - //error_log('MxChat: Rate limit cron already scheduled, skipping setup');
9683 - return;
9684 - }
9685 -
9686 - // Clear any orphaned hooks (but don't loop indefinitely)
9687 - $hooks_to_clear = [
9688 - 'mxchat_reset_rate_limits',
9689 - 'mxchat_reset_hourly_rate_limits',
9690 - 'mxchat_reset_daily_rate_limits',
9691 - 'mxchat_reset_weekly_rate_limits',
9692 - 'mxchat_reset_monthly_rate_limits'
9693 - ];
9694 -
9695 - foreach ($hooks_to_clear as $hook) {
9696 - // Only clear a maximum of 3 instances to prevent infinite loops
9697 - $cleared = 0;
9698 - while (wp_next_scheduled($hook) && $cleared < 3) {
9699 - wp_clear_scheduled_hook($hook);
9700 - $cleared++;
9701 - }
9702 - }
9703 -
9704 - // Small delay after clearing
9705 - usleep(100000); // 0.1 seconds
9706 -
9707 - // Try to schedule the event
9708 - $initial_time = time() + 300; // Start in 5 minutes
9709 - $result = wp_schedule_event($initial_time, 'hourly', 'mxchat_reset_rate_limits');
9710 -
9711 - if ($result === false) {
9712 - //error_log('MxChat: Failed to schedule cron, using fallback system');
9713 - $this->setup_fallback_rate_limit_system();
9714 - } else {
9715 - //error_log('MxChat: Successfully scheduled rate limit reset cron');
9716 - }
9717 -
9718 - } catch (Exception $e) {
9719 - //error_log('MxChat: Cron setup exception: ' . $e->getMessage());
9720 - $this->setup_fallback_rate_limit_system();
9721 - }
9722 -}
9723 -
9724 -/**
9725 - * Try alternative cron scheduling methods
9726 - */
9727 -private function try_alternative_cron_scheduling($initial_time) {
9728 - try {
9729 - // Method 1: Try with current time instead of future time
9730 - $result1 = wp_schedule_event(time(), 'hourly', 'mxchat_reset_rate_limits');
9731 - if ($result1 !== false) {
9732 - //error_log('MxChat: Alternative method 1 (current time) succeeded');
9733 - return true;
9734 - }
9735 -
9736 - // Method 2: Try with a different interval
9737 - $result2 = wp_schedule_event($initial_time, 'daily', 'mxchat_reset_rate_limits');
9738 - if ($result2 !== false) {
9739 - //error_log('MxChat: Alternative method 2 (daily interval) succeeded');
9740 - return true;
9741 - }
9742 -
9743 - // Method 3: Try wp_schedule_single_event first, then recurring
9744 - $result3 = wp_schedule_single_event($initial_time, 'mxchat_reset_rate_limits');
9745 - if ($result3 !== false) {
9746 - //error_log('MxChat: Alternative method 3 (single event) succeeded');
9747 - // Schedule the next one manually in the handler
9748 - return true;
9749 - }
9750 -
9751 - return false;
9752 -
9753 - } catch (Exception $e) {
9754 - //error_log('MxChat: Alternative cron scheduling exception: ' . $e->getMessage());
9755 - return false;
9756 - }
9757 -}
9758 -
9759 -/**
9760 - * Enhanced fallback rate limit system
9761 - */
9762 -private function setup_fallback_rate_limit_system() {
9763 - // Set a flag to use database-based rate limit cleanup
9764 - update_option('mxchat_use_fallback_rate_limits', true);
9765 -
9766 - // Schedule a one-time check to happen on the next plugin load
9767 - update_option('mxchat_next_rate_limit_check', time() + 3600);
9768 -
9769 - // Also set up a more frequent fallback check (every 4 hours)
9770 - update_option('mxchat_fallback_check_interval', 4 * 3600);
9771 -
9772 - //error_log('MxChat: Fallback rate limit system activated');
9773 -}
9774 -
9775 -/**
9776 - * Enhanced fallback check method
9777 - */
9778 -public function check_fallback_rate_limits() {
9779 - $use_fallback = get_option('mxchat_use_fallback_rate_limits', false);
9780 -
9781 - if (!$use_fallback) {
9782 - return; // Regular cron is working
9783 - }
9784 -
9785 - $next_check = get_option('mxchat_next_rate_limit_check', 0);
9786 - $check_interval = get_option('mxchat_fallback_check_interval', 3600);
9787 -
9788 - if (time() >= $next_check) {
9789 - //error_log('MxChat: Running fallback rate limit cleanup');
9790 - $this->mxchat_reset_rate_limits();
9791 -
9792 - // Schedule next check
9793 - update_option('mxchat_next_rate_limit_check', time() + $check_interval);
9794 - }
9795 -}
9796 -/**
9797 - * Enhanced rate limit check that includes fallback cleanup and bot-specific rate limits
9798 - */
9799 -public function check_rate_limit() {
9800 - // Check if we need to run fallback cleanup
9801 - $use_fallback = get_option('mxchat_use_fallback_rate_limits', false);
9802 - $next_check = get_option('mxchat_next_rate_limit_check', 0);
9803 -
9804 - if ($use_fallback && time() >= $next_check) {
9805 - $this->mxchat_reset_rate_limits();
9806 - update_option('mxchat_next_rate_limit_check', time() + 3600); // Next hour
9807 - }
9808 -
9809 - // Get bot ID from current request context
9810 - $bot_id = isset($_POST['bot_id']) ? sanitize_key($_POST['bot_id']) : 'default';
9811 -
9812 - // Get bot-specific options (includes rate limits if overridden)
9813 - $bot_options = $this->get_bot_options($bot_id);
9814 - $current_options = !empty($bot_options) ? $bot_options : $this->options;
9815 -
9816 - // Use bot-specific rate limits if available, otherwise fall back to default
9817 - $rate_limits_source = isset($current_options['rate_limits']) ? $current_options['rate_limits'] : get_option('mxchat_options', [])['rate_limits'] ?? [];
9818 -
9819 - // Determine user role or if logged out
9820 - if (is_user_logged_in()) {
9821 - $user = wp_get_current_user();
9822 - $user_id = $user->ID;
9823 -
9824 - // Get the user's primary role using reset() to safely get the first element
9825 - $user_roles = $user->roles;
9826 -
9827 - // Safely get the first role regardless of array key structure
9828 - if (!empty($user_roles) && is_array($user_roles)) {
9829 - $role = reset($user_roles); // This safely gets the first element regardless of key
9830 - } else {
9831 - $role = 'subscriber'; // Default to subscriber if no role found
9832 - }
9833 - } else {
9834 - $role = 'logged_out';
9835 - // Use IP address for non-logged-in users
9836 - $user_id = $this->get_client_ip();
9837 - }
9838 -
9839 - // Check if rate limits are configured for this role
9840 - if (!isset($rate_limits_source[$role])) {
9841 - return true; // No limit set for this role
9842 - }
9843 -
9844 - $limit = $rate_limits_source[$role]['limit'];
9845 -
9846 - // If unlimited, return true immediately
9847 - if ($limit === 'unlimited') {
9848 - return true;
9849 - }
9850 -
9851 - // Get the option name for this user/role with safer naming (include bot_id for bot-specific limits)
9852 - $safe_role = preg_replace('/[^a-zA-Z0-9_]/', '_', $role);
9853 - $safe_user_id = preg_replace('/[^a-zA-Z0-9_]/', '_', $user_id);
9854 - $safe_bot_id = preg_replace('/[^a-zA-Z0-9_]/', '_', $bot_id);
9855 -
9856 - // Include bot_id in option name so each bot has separate rate limits
9857 - $option_name = 'mxchat_chat_limit_' . $safe_bot_id . '_' . $safe_role . '_' . $safe_user_id;
9858 -
9859 - // Get the counter data
9860 - $limit_data = get_option($option_name, ['count' => 0, 'timestamp' => time()]);
9861 -
9862 - // If first request or counter reset needed, set the initial timestamp
9863 - if ($limit_data['count'] === 0) {
9864 - $limit_data['timestamp'] = time();
9865 - update_option($option_name, $limit_data);
9866 - }
9867 -
9868 - // Get the timeframe
9869 - $timeframe = isset($rate_limits_source[$role]['timeframe']) ?
9870 - $rate_limits_source[$role]['timeframe'] : 'daily';
9871 -
9872 - // Check if the counter needs to be reset based on timeframe
9873 - $current_time = time();
9874 - $timestamp = $limit_data['timestamp'];
9875 - $should_reset = false;
9876 -
9877 - switch ($timeframe) {
9878 - case 'hourly':
9879 - $should_reset = ($current_time - $timestamp) >= 3600; // 1 hour
9880 - break;
9881 - case 'daily':
9882 - $should_reset = ($current_time - $timestamp) >= 86400; // 24 hours
9883 - break;
9884 - case 'weekly':
9885 - $should_reset = ($current_time - $timestamp) >= 604800; // 7 days
9886 - break;
9887 - case 'monthly':
9888 - $should_reset = ($current_time - $timestamp) >= 2592000; // 30 days
9889 - break;
9890 - }
9891 -
9892 - // Reset the counter if the timeframe has passed
9893 - if ($should_reset) {
9894 - $limit_data = ['count' => 0, 'timestamp' => $current_time];
9895 - update_option($option_name, $limit_data);
9896 - }
9897 -
9898 - // Check if user has exceeded their limit
9899 - if ($limit_data['count'] >= intval($limit)) {
9900 - // Get the custom message for this role
9901 - $message = !empty($rate_limits_source[$role]['message'])
9902 - ? $rate_limits_source[$role]['message']
9903 - : __('Rate limit exceeded. Please try again later.', 'mxchat');
9904 -
9905 - // Add timeframe information to the message if placeholders exist
9906 - $timeframe_label = '';
9907 - switch ($timeframe) {
9908 - case 'hourly':
9909 - $timeframe_label = __('hour', 'mxchat');
9910 - break;
9911 - case 'daily':
9912 - $timeframe_label = __('day', 'mxchat');
9913 - break;
9914 - case 'weekly':
9915 - $timeframe_label = __('week', 'mxchat');
9916 - break;
9917 - case 'monthly':
9918 - $timeframe_label = __('month', 'mxchat');
9919 - break;
9920 - }
9921 -
9922 - // Replace placeholders in the message
9923 - $message = str_replace(
9924 - ['{limit}', '{count}', '{remaining}', '{timeframe}'],
9925 - [intval($limit), $limit_data['count'], max(0, intval($limit) - $limit_data['count']), $timeframe_label],
9926 - $message
9927 - );
9928 -
9929 - // Process HTML links in the message
9930 - $message = $this->process_rate_limit_message_html($message);
9931 -
9932 - // Return error with the processed message
9933 - return [
9934 - 'error' => true,
9935 - 'message' => $message
9936 - ];
9937 - }
9938 -
9939 - // Increment the counter
9940 - $limit_data['count']++;
9941 - update_option($option_name, $limit_data);
9942 -
9943 - return true;
9944 -}
9945 -
9946 -/**
9947 - * Enhanced rate limit reset with better error handling
9948 - */
9949 -public function mxchat_reset_rate_limits() {
9950 - try {
9951 - global $wpdb;
9952 - $all_options = get_option('mxchat_options', []);
9953 - $current_time = time();
9954 -
9955 - // Get rate limit options with a safer query and limit
9956 - $option_names = $wpdb->get_col(
9957 - $wpdb->prepare(
9958 - "SELECT option_name FROM {$wpdb->options}
9959 - WHERE option_name LIKE %s
9960 - LIMIT 1000",
9961 - 'mxchat_chat_limit_%'
9962 - )
9963 - );
9964 -
9965 - if (empty($option_names)) {
9966 - return;
9967 - }
9968 -
9969 - $processed_count = 0;
9970 - $max_processing_time = 30; // Maximum 30 seconds
9971 - $start_time = time();
9972 -
9973 - foreach ($option_names as $option_name) {
9974 - // Check processing time limit
9975 - if ((time() - $start_time) > $max_processing_time) {
9976 - //error_log('MxChat: Rate limit reset timeout after processing ' . $processed_count . ' entries');
9977 - break;
9978 - }
9979 -
9980 - // Parse the option name more safely
9981 - if (!preg_match('/^mxchat_chat_limit_(.+)_(.+)$/', $option_name, $matches)) {
9982 - continue;
9983 - }
9984 -
9985 - $role_and_user = $matches[1] . '_' . $matches[2];
9986 - $parts = explode('_', $role_and_user);
9987 -
9988 - if (count($parts) < 2) {
9989 - continue;
9990 - }
9991 -
9992 - // Extract role (everything except the last part which is user ID)
9993 - $user_id_part = array_pop($parts);
9994 - $role = implode('_', $parts);
9995 -
9996 - // Skip if role doesn't exist in our settings
9997 - if (!isset($all_options['rate_limits'][$role])) {
9998 - // Clean up orphaned entries
9999 - delete_option($option_name);
10000 - continue;
10001 - }
10002 -
10003 - $timeframe = $all_options['rate_limits'][$role]['timeframe'] ?? 'daily';
10004 - $limit_data = get_option($option_name);
10005 -
10006 - if (!$limit_data || !is_array($limit_data) || !isset($limit_data['timestamp'])) {
10007 - // Clean up invalid entries
10008 - delete_option($option_name);
10009 - continue;
10010 - }
10011 -
10012 - $timestamp = $limit_data['timestamp'];
10013 - $should_reset = false;
10014 -
10015 - // Determine if we should reset based on the timeframe
10016 - switch ($timeframe) {
10017 - case 'hourly':
10018 - $should_reset = ($current_time - $timestamp) >= 3600;
10019 - break;
10020 - case 'daily':
10021 - $should_reset = ($current_time - $timestamp) >= 86400;
10022 - break;
10023 - case 'weekly':
10024 - $should_reset = ($current_time - $timestamp) >= 604800;
10025 - break;
10026 - case 'monthly':
10027 - $should_reset = ($current_time - $timestamp) >= 2592000;
10028 - break;
10029 - }
10030 -
10031 - // Reset the counter if the timeframe has passed
10032 - if ($should_reset) {
10033 - delete_option($option_name);
10034 - wp_cache_delete($option_name, 'options');
10035 - $processed_count++;
10036 - }
10037 - }
10038 -
10039 - // Clean up any orphaned cache entries
10040 - wp_cache_delete('mxchat_all_chat_limits', 'options');
10041 -
10042 - //error_log("MxChat: Rate limit reset completed. Processed {$processed_count} entries.");
10043 -
10044 - } catch (Exception $e) {
10045 - //error_log('MxChat: Rate limit reset error: ' . $e->getMessage());
10046 - }
10047 -}
10048 -
10049 -
10050 -/**
10051 - * Process HTML links in rate limit messages
10052 - *
10053 - * @param string $message The rate limit message
10054 - * @return string The processed message with safe HTML links
10055 - */
10056 -private function process_rate_limit_message_html($message) {
10057 - // Return original message if empty
10058 - if (empty($message)) {
10059 - return $message;
10060 - }
10061 -
10062 - // First, convert markdown links to HTML
10063 - $message = $this->convert_markdown_links($message);
10064 -
10065 - // Then, auto-convert any remaining plain URLs to links
10066 - $message = $this->auto_link_urls($message);
10067 -
10068 - // Allow basic HTML tags for links and formatting
10069 - $allowed_tags = [
10070 - 'a' => [
10071 - 'href' => true,
10072 - 'target' => true,
10073 - 'rel' => true,
10074 - 'title' => true,
10075 - 'class' => true
10076 - ],
10077 - 'strong' => [],
10078 - 'em' => [],
10079 - 'br' => [],
10080 - 'b' => [],
10081 - 'i' => [],
10082 - 'span' => ['class' => true]
10083 - ];
10084 -
10085 - // Sanitize but allow the specified HTML tags
10086 - $processed_message = wp_kses($message, $allowed_tags);
10087 -
10088 - // If wp_kses stripped everything, return the original message as plain text
10089 - if (empty($processed_message) && !empty($message)) {
10090 - // Strip all HTML and return plain text as fallback
10091 - return wp_strip_all_tags($message);
10092 - }
10093 -
10094 - return $processed_message;
10095 -}
10096 -
10097 -/**
10098 - * Convert markdown links to HTML
10099 - *
10100 - * @param string $text The text to process
10101 - * @return string The text with markdown links converted to HTML
10102 - */
10103 -private function convert_markdown_links($text) {
10104 - // Return original text if empty
10105 - if (empty($text)) {
10106 - return $text;
10107 - }
10108 -
10109 - // Pattern to match markdown links: [text](url)
10110 - $pattern = '/\[([^\]]+)\]\(([^)]+)\)/';
10111 -
10112 - $processed_text = preg_replace_callback($pattern, function($matches) {
10113 - $link_text = $matches[1];
10114 - $url = $matches[2];
10115 -
10116 - // Clean up any trailing punctuation from the URL
10117 - $url = rtrim($url, '.,;:!?');
10118 -
10119 - // Sanitize the link text and URL
10120 - $safe_text = esc_html($link_text);
10121 - $safe_url = esc_url($url);
10122 -
10123 - // Create the HTML link
10124 - return '<a href="' . $safe_url . '" target="_blank" rel="noopener noreferrer">' . $safe_text . '</a>';
10125 - }, $text);
10126 -
10127 - // If preg_replace_callback failed, return original text
10128 - if ($processed_text === null) {
10129 - return $text;
10130 - }
10131 -
10132 - return $processed_text;
10133 -}
10134 -
10135 -/**
10136 - * Auto-convert plain URLs to clickable links
10137 - *
10138 - * @param string $text The text to process
10139 - * @return string The text with URLs converted to links
10140 - */
10141 -private function auto_link_urls($text) {
10142 - // Return original text if empty
10143 - if (empty($text)) {
10144 - return $text;
10145 - }
10146 -
10147 - // Simple pattern that avoids complex lookbehinds
10148 - // This will match URLs that are not already inside href attributes or markdown links
10149 - $pattern = '/(?<!href=["\'])(?<!\]\()https?:\/\/[^\s<>"\')\]]+/i';
10150 -
10151 - $processed_text = preg_replace_callback($pattern, function($matches) {
10152 - $url = $matches[0];
10153 - // Clean up any trailing punctuation that might have been captured
10154 - $url = rtrim($url, '.,;:!?');
10155 -
10156 - // Add target="_blank" and rel="noopener noreferrer" for security
10157 - return '<a href="' . esc_url($url) . '" target="_blank" rel="noopener noreferrer">' . esc_html($url) . '</a>';
10158 - }, $text);
10159 -
10160 - // If preg_replace_callback failed, return original text
10161 - if ($processed_text === null) {
10162 - return $text;
10163 - }
10164 -
10165 - return $processed_text;
10166 -}
10167 -
10168 -
10169 -// Helper function to get client IP address
10170 -private function get_client_ip() {
10171 - // Check for shared internet/ISP IP
10172 - if (!empty($_SERVER['HTTP_CLIENT_IP'])) {
10173 - return sanitize_text_field($_SERVER['HTTP_CLIENT_IP']);
10174 - }
10175 -
10176 - // Check for IPs passing through proxies
10177 - if (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
10178 - // Use the first value in the comma-separated list
10179 - $forwarded_for = explode(',', sanitize_text_field($_SERVER['HTTP_X_FORWARDED_FOR']));
10180 - return trim($forwarded_for[0]);
10181 - }
10182 -
10183 - if (!empty($_SERVER['REMOTE_ADDR'])) {
10184 - return sanitize_text_field($_SERVER['REMOTE_ADDR']);
10185 - }
10186 -
10187 - // Fallback
10188 - return 'unknown';
10189 -}
10190 -
10191 -/**
10192 - * AJAX handler to get system information for testing panel
10193 - */
10194 -/**
10195 - * AJAX handler to get system information for testing panel
10196 - */
10197 -public function mxchat_get_system_info() {
10198 - // Verify nonce for security
10199 - if (!wp_verify_nonce($_POST['nonce'], 'mxchat_test_nonce')) {
10200 - wp_send_json_error(['message' => 'Invalid nonce']);
10201 - return;
10202 - }
10203 -
10204 - // Only allow admin users
10205 - if (!current_user_can('administrator')) {
10206 - wp_send_json_error(['message' => 'Unauthorized']);
10207 - return;
10208 - }
10209 -
10210 - // Get system prompt from options
10211 - $system_prompt = isset($this->options['system_prompt_instructions'])
10212 - ? $this->options['system_prompt_instructions']
10213 - : 'No system prompt configured';
10214 -
10215 - // Get selected model
10216 - $selected_model = isset($this->options['model']) ? $this->options['model'] : 'gpt-5.1-chat-latest';
10217 -
10218 - // Check if OpenRouter is being used
10219 - $is_openrouter = ($selected_model === 'openrouter');
10220 - $openrouter_model = '';
10221 -
10222 - if ($is_openrouter) {
10223 - // Get the actual OpenRouter model that's selected
10224 - $openrouter_model = isset($this->options['openrouter_selected_model'])
10225 - ? $this->options['openrouter_selected_model']
10226 - : 'No OpenRouter model selected';
10227 -
10228 - // Update selected_model display to show both
10229 - $selected_model = 'OpenRouter: ' . $openrouter_model;
10230 - }
10231 -
10232 - // Get API key status (just check if they exist, don't expose the keys)
10233 - $api_status = [];
10234 - $api_status['openai'] = !empty($this->options['api_key']);
10235 - $api_status['claude'] = !empty($this->options['claude_api_key']);
10236 - $api_status['gemini'] = !empty($this->options['gemini_api_key']);
10237 - $api_status['xai'] = !empty($this->options['xai_api_key']);
10238 - $api_status['deepseek'] = !empty($this->options['deepseek_api_key']);
10239 - $api_status['openrouter'] = !empty($this->options['openrouter_api_key']);
10240 -
10241 - wp_send_json_success([
10242 - 'system_prompt' => $system_prompt,
10243 - 'selected_model' => $selected_model,
10244 - 'is_openrouter' => $is_openrouter,
10245 - 'openrouter_model' => $openrouter_model,
10246 - 'api_status' => $api_status
10247 - ]);
10248 -}
10249 -
10250 -/**
10251 - * AJAX handler to get similarity threshold
10252 - */
10253 -public function mxchat_get_similarity_threshold() {
10254 - // Verify nonce for security
10255 - if (!wp_verify_nonce($_POST['nonce'], 'mxchat_test_nonce')) {
10256 - wp_send_json_error(['message' => 'Invalid nonce']);
10257 - return;
10258 - }
10259 -
10260 - // Only allow admin users
10261 - if (!current_user_can('administrator')) {
10262 - wp_send_json_error(['message' => 'Unauthorized']);
10263 - return;
10264 - }
10265 -
10266 - // Get similarity threshold from main options (default 35%)
10267 - $similarity_threshold = isset($this->options['similarity_threshold'])
10268 - ? ((int) $this->options['similarity_threshold']) / 100
10269 - : 0.35;
10270 -
10271 - wp_send_json_success([
10272 - 'threshold' => $similarity_threshold,
10273 - 'threshold_percentage' => ($similarity_threshold * 100) . '%'
10274 - ]);
10275 -}
10276 -
10277 -/**
10278 - * AJAX handler to get knowledge base status
10279 - */
10280 -public function mxchat_get_kb_status() {
10281 - // Verify nonce for security
10282 - if (!wp_verify_nonce($_POST['nonce'], 'mxchat_test_nonce')) {
10283 - wp_send_json_error(['message' => 'Invalid nonce']);
10284 - return;
10285 - }
10286 -
10287 - // Only allow admin users
10288 - if (!current_user_can('administrator')) {
10289 - wp_send_json_error(['message' => 'Unauthorized']);
10290 - return;
10291 - }
10292 -
10293 - // Check OpenAI Vector Store first (takes priority)
10294 - $vectorstore_options = get_option('mxchat_openai_vectorstore_options', array());
10295 - $use_vectorstore = (isset($vectorstore_options['mxchat_use_openai_vectorstore']) && $vectorstore_options['mxchat_use_openai_vectorstore'] === '1');
10296 -
10297 - if ($use_vectorstore) {
10298 - $vectorstore_ids = $vectorstore_options['mxchat_openai_vectorstore_ids'] ?? '';
10299 - $id_count = !empty($vectorstore_ids) ? count(array_filter(array_map('trim', explode(',', $vectorstore_ids)))) : 0;
10300 -
10301 - $kb_info = [
10302 - 'type' => 'OpenAI Vector Store',
10303 - 'status' => 'Active',
10304 - 'documents' => $id_count > 0 ? $id_count . ' vector store' . ($id_count > 1 ? 's' : '') . ' configured' : 'No vector stores configured'
10305 - ];
10306 -
10307 - wp_send_json_success($kb_info);
10308 - return;
10309 - }
10310 -
10311 - // Check Pinecone vs WordPress
10312 - $addon_options = get_option('mxchat_pinecone_addon_options', array());
10313 - $use_pinecone = (isset($addon_options['mxchat_use_pinecone']) && $addon_options['mxchat_use_pinecone'] === '1');
10314 -
10315 - $kb_info = [
10316 - 'type' => $use_pinecone ? 'Pinecone' : 'WordPress Database',
10317 - 'status' => 'Active'
10318 - ];
10319 -
10320 - // Get document count
10321 - if ($use_pinecone) {
10322 - $kb_info['documents'] = 'Connected to Pinecone';
10323 - $kb_info['api_configured'] = !empty($addon_options['mxchat_pinecone_api_key']);
10324 - } else {
10325 - // Count documents in WordPress database
10326 - global $wpdb;
10327 - $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
10328 - $count = $wpdb->get_var("SELECT COUNT(*) FROM {$table_name}");
10329 - $kb_info['documents'] = $count ? $count . ' documents' : 'No documents';
10330 - }
10331 -
10332 - wp_send_json_success($kb_info);
10333 -}
10334 -
10335 -/**
10336 - * AJAX handler to start a completely fresh session (NEW - replaces old clear session)
10337 - */
10338 -public function mxchat_start_fresh_session() {
10339 - // Verify nonce for security
10340 - if (!wp_verify_nonce($_POST['nonce'], 'mxchat_test_nonce')) {
10341 - wp_send_json_error(['message' => 'Invalid nonce']);
10342 - return;
10343 - }
10344 -
10345 - // Only allow admin users
10346 - if (!current_user_can('administrator')) {
10347 - wp_send_json_error(['message' => 'Unauthorized']);
10348 - return;
10349 - }
10350 -
10351 - $old_session_id = isset($_POST['old_session_id']) ? sanitize_text_field($_POST['old_session_id']) : '';
10352 - $new_session_id = isset($_POST['new_session_id']) ? sanitize_text_field($_POST['new_session_id']) : '';
10353 -
10354 - if (empty($old_session_id)) {
10355 - wp_send_json_error(['message' => 'Old session ID required']);
10356 - return;
10357 - }
10358 -
10359 - // If no new session ID provided, generate one
10360 - if (empty($new_session_id)) {
10361 - $new_session_id = 'mxchat_chat_' . substr(md5(uniqid()), 0, 9);
10362 - }
10363 -
10364 - // Clear ALL data associated with the old session
10365 - $this->clear_complete_session_data($old_session_id);
10366 -
10367 - // Initialize the new session
10368 - $this->initialize_fresh_session($new_session_id);
10369 -
10370 - wp_send_json_success([
10371 - 'message' => 'Fresh session started successfully',
10372 - 'new_session_id' => $new_session_id,
10373 - 'old_session_id' => $old_session_id
10374 - ]);
10375 -}
10376 -
10377 -/**
10378 - * Clear ALL data associated with a session (ENHANCED)
10379 - */
10380 -private function clear_complete_session_data($session_id) {
10381 - // Clear chat history
10382 - delete_option("mxchat_history_{$session_id}");
10383 -
10384 - // Clear chat mode
10385 - delete_option("mxchat_mode_{$session_id}");
10386 -
10387 - // Clear any PDF/Word transients
10388 - $this->clear_pdf_transients($session_id);
10389 - if (method_exists($this, 'clear_word_transients')) {
10390 - $this->clear_word_transients($session_id);
10391 - }
10392 -
10393 - // Clear agent-related data
10394 - delete_option("mxchat_channel_{$session_id}");
10395 - delete_option("mxchat_agent_name_{$session_id}");
10396 - delete_option("mxchat_email_{$session_id}");
10397 -
10398 - // Clear any recommendation flow state
10399 - delete_option("mxchat_sr_flow_state_{$session_id}");
10400 -
10401 - // Clear any cached embeddings or context
10402 - delete_transient("mxchat_context_{$session_id}");
10403 - delete_transient("mxchat_last_query_{$session_id}");
10404 -
10405 - // Clear any testing data
10406 - delete_transient("mxchat_testing_data_{$session_id}");
10407 -
10408 - // Clear any rate limiting data for this session
10409 - delete_transient("mxchat_rate_limit_{$session_id}");
10410 -
10411 - // Clear any other session-specific transients
10412 - delete_transient("mxchat_waiting_for_pdf_url_{$session_id}");
10413 - delete_transient("mxchat_include_pdf_in_context_{$session_id}");
10414 - delete_transient("mxchat_include_word_in_context_{$session_id}");
10415 -
10416 - // Clear form addon state (pending forms and submitted forms)
10417 - delete_option("mxchat_pending_form_{$session_id}");
10418 - delete_option("mxchat_submitted_forms_{$session_id}");
10419 -
10420 - //error_log("MxChat: Cleared all data for session: {$session_id}");
10421 -}
10422 -
10423 -/**
10424 - * Initialize a fresh session with default data
10425 - */
10426 -private function initialize_fresh_session($session_id) {
10427 - // Set default chat mode
10428 - update_option("mxchat_mode_{$session_id}", 'ai');
10429 -
10430 - //error_log("MxChat: Initialized fresh session: {$session_id}");
10431 -}
10432 -
10433 -/**
10434 - * Helper method to clear Word document transients (if you have Word support)
10435 - */
10436 -private function clear_word_transients($session_id) {
10437 - delete_transient('mxchat_word_url_' . $session_id);
10438 - delete_transient('mxchat_word_filename_' . $session_id);
10439 - delete_transient('mxchat_word_embeddings_' . $session_id);
10440 - delete_transient('mxchat_include_word_in_context_' . $session_id);
10441 -}
10442 -
10443 -/**
10444 - * Simplified testing data capture method (CLEANED UP)
10445 - */
10446 -private function capture_testing_data($user_embedding, $message, $session_id) {
10447 - // Only capture for admin users
10448 - if (!current_user_can('administrator')) {
10449 - return null;
10450 - }
10451 -
10452 - $testing_data = [
10453 - 'query' => $message,
10454 - 'timestamp' => time(),
10455 - 'top_matches' => [],
10456 - 'action_matches' => [] // Add action matches
10457 - ];
10458 -
10459 - // Get similarity threshold
10460 - $similarity_threshold = isset($this->options['similarity_threshold'])
10461 - ? ((int) $this->options['similarity_threshold']) / 100
10462 - : 0.35;
10463 -
10464 - $testing_data['similarity_threshold'] = $similarity_threshold;
10465 -
10466 - // Use the real similarity analysis if available
10467 - if ($this->last_similarity_analysis !== null) {
10468 - $testing_data['knowledge_base_type'] = $this->last_similarity_analysis['knowledge_base_type'];
10469 - $testing_data['top_matches'] = $this->last_similarity_analysis['top_matches'];
10470 - $testing_data['total_documents_checked'] = $this->last_similarity_analysis['total_checked'] ?? 0;
10471 - } else {
10472 - // Fallback: determine knowledge base type
10473 - $addon_options = get_option('mxchat_pinecone_addon_options', array());
10474 - $use_pinecone = (isset($addon_options['mxchat_use_pinecone']) && $addon_options['mxchat_use_pinecone'] === '1');
10475 -
10476 - $testing_data['knowledge_base_type'] = $use_pinecone ? 'Pinecone' : 'WordPress Database';
10477 - }
10478 -
10479 - // Include action analysis if available
10480 - if (isset($this->last_action_analysis) && !empty($this->last_action_analysis)) {
10481 - $testing_data['action_matches'] = $this->last_action_analysis;
10482 -
10483 - // Clear it after capturing to avoid stale data
10484 - $this->last_action_analysis = null;
10485 - }
10486 -
10487 - return $testing_data;
10488 -}
10489 -
10490 -
10491 -/**
10492 - * Track URL clicks from chatbot responses
10493 - */
10494 -public function mxchat_track_url_click() {
10495 - // Verify nonce for security
10496 - if (!isset($_POST['nonce']) || !wp_verify_nonce($_POST['nonce'], 'mxchat_chat_nonce')) {
10497 - wp_send_json_error(['message' => 'Invalid nonce']);
10498 - wp_die();
10499 - }
10500 -
10501 - $session_id = isset($_POST['session_id']) ? sanitize_text_field($_POST['session_id']) : '';
10502 - $clicked_url = isset($_POST['url']) ? esc_url_raw($_POST['url']) : '';
10503 - $message_context = isset($_POST['message_context']) ? sanitize_textarea_field($_POST['message_context']) : '';
10504 -
10505 - if (empty($session_id) || empty($clicked_url)) {
10506 - wp_send_json_error(['message' => 'Missing required data']);
10507 - wp_die();
10508 - }
10509 -
10510 - global $wpdb;
10511 - $table_name = $wpdb->prefix . 'mxchat_url_clicks';
10512 -
10513 - // Insert click tracking record
10514 - $wpdb->insert(
10515 - $table_name,
10516 - [
10517 - 'session_id' => $session_id,
10518 - 'clicked_url' => $clicked_url,
10519 - 'message_context' => $message_context,
10520 - 'click_timestamp' => current_time('mysql', 1),
10521 - 'user_ip' => $_SERVER['REMOTE_ADDR'],
10522 - 'user_agent' => $_SERVER['HTTP_USER_AGENT']
10523 - ]
10524 - );
10525 -
10526 - wp_send_json_success(['message' => 'Click tracked']);
10527 - wp_die();
10528 -}
10529 -
10530 -/**
10531 - * Get URL click analytics for a session
10532 - */
10533 -public function mxchat_get_url_clicks($session_id) {
10534 - global $wpdb;
10535 - $table_name = $wpdb->prefix . 'mxchat_url_clicks';
10536 -
10537 - $clicks = $wpdb->get_results($wpdb->prepare(
10538 - "SELECT * FROM $table_name WHERE session_id = %s ORDER BY click_timestamp ASC",
10539 - $session_id
10540 - ));
10541 -
10542 - return $clicks;
10543 -}
10544 -/**
10545 - * Track the originating page where chat was started
10546 - */
10547 -public function mxchat_track_originating_page() {
10548 - // Verify nonce
10549 - if (!isset($_POST['nonce']) || !wp_verify_nonce($_POST['nonce'], 'mxchat_chat_nonce')) {
10550 - wp_send_json_error(['message' => 'Invalid nonce']);
10551 - wp_die();
10552 - }
10553 -
10554 - $session_id = isset($_POST['session_id']) ? sanitize_text_field($_POST['session_id']) : '';
10555 - $page_url = isset($_POST['page_url']) ? esc_url_raw($_POST['page_url']) : '';
10556 - $page_title = isset($_POST['page_title']) ? sanitize_text_field($_POST['page_title']) : '';
10557 -
10558 - if (empty($session_id)) {
10559 - wp_send_json_error(['message' => 'Missing session ID']);
10560 - wp_die();
10561 - }
10562 -
10563 - global $wpdb;
10564 - $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
10565 -
10566 - // Check if we've already tracked for this session
10567 - $existing = $wpdb->get_var($wpdb->prepare(
10568 - "SELECT COUNT(*) FROM $table_name
10569 - WHERE session_id = %s
10570 - AND originating_page_url IS NOT NULL",
10571 - $session_id
10572 - ));
10573 -
10574 - if ($existing > 0) {
10575 - wp_send_json_success(['message' => 'Already tracked']);
10576 - wp_die();
10577 - }
10578 -
10579 - // Update the first message in this session with originating page info
10580 - $wpdb->query($wpdb->prepare(
10581 - "UPDATE $table_name
10582 - SET originating_page_url = %s,
10583 - originating_page_title = %s
10584 - WHERE session_id = %s
10585 - ORDER BY timestamp ASC
10586 - LIMIT 1",
10587 - $page_url,
10588 - $page_title,
10589 - $session_id
10590 - ));
10591 -
10592 - wp_send_json_success(['message' => 'Originating page tracked']);
10593 - wp_die();
10594 -}
10595 -
10596 -/**
10597 - * Validate and clean URLs from AI response
10598 - * Removes any URLs that aren't in the knowledge base
10599 - *
10600 - * @param string $response_text The AI-generated response
10601 - * @param array $valid_urls Array of URLs from the knowledge base
10602 - * @return string Cleaned response with invalid URLs removed/flagged
10603 - */
10604 -private function validate_and_clean_urls($response_text, $valid_urls) {
10605 - // DEBUG: Log what we're working with
10606 - //error_log("=== MxChat URL Validation Debug ===");
10607 - //error_log("Valid URLs count: " . count($valid_urls));
10608 - //error_log("Valid URLs: " . print_r($valid_urls, true));
10609 - //error_log("Response text length: " . strlen($response_text));
10610 - //error_log("Response text preview: " . substr($response_text, 0, 500));
10611 -
10612 - // If no valid URLs provided or empty response, return as-is
10613 - if (empty($valid_urls) || empty($response_text)) {
10614 - //error_log("Validation skipped - empty valid_urls or response");
10615 - return $response_text;
10616 - }
10617 -
10618 - // Extract all URLs from the AI response
10619 - // This regex matches http:// and https:// URLs
10620 - preg_match_all(
10621 - '#\bhttps?://[^\s<>"\')\]]+#i',
10622 - $response_text,
10623 - $matches
10624 - );
10625 -
10626 - // If no URLs found in response, return as-is
10627 - if (empty($matches[0])) {
10628 - //error_log("No URLs found in response");
10629 - return $response_text;
10630 - }
10631 -
10632 - $found_urls = $matches[0];
10633 - $cleaned_response = $response_text;
10634 - $removed_count = 0;
10635 -
10636 - // Normalize valid URLs for comparison (remove trailing slashes, fragments, etc.)
10637 - $normalized_valid_urls = array_map(function($url) {
10638 - // Remove trailing slash
10639 - $url = rtrim($url, '/');
10640 - // Remove URL fragments (#section)
10641 - $url = preg_replace('/#.*$/', '', $url);
10642 - // Remove trailing punctuation that might have been captured
10643 - $url = rtrim($url, '.,;:!?');
10644 - return $url;
10645 - }, $valid_urls);
10646 -
10647 - //error_log("Normalized valid URLs: " . print_r($normalized_valid_urls, true));
10648 -
10649 - foreach ($found_urls as $found_url) {
10650 - // Clean up the found URL (remove trailing punctuation that might have been captured)
10651 - $clean_found_url = rtrim($found_url, '.,;:!?)');
10652 -
10653 - // DEBUG: Log each URL being checked
10654 - //error_log("Checking found URL: " . $found_url);
10655 -
10656 - // Normalize for comparison
10657 - $normalized_found = rtrim($clean_found_url, '/');
10658 - $normalized_found = preg_replace('/#.*$/', '', $normalized_found);
10659 -
10660 - //error_log("Normalized found URL: " . $normalized_found);
10661 -
10662 - // Check if this URL exists in our valid URLs list
10663 - $is_valid = false;
10664 -
10665 - //error_log("Starting validation checks for: " . $normalized_found);
10666 -
10667 - // First, try exact match
10668 - if (in_array($normalized_found, $normalized_valid_urls)) {
10669 - $is_valid = true;
10670 - //error_log("EXACT MATCH FOUND");
10671 - } else {
10672 - //error_log("No exact match, checking variations...");
10673 - // If no exact match, check if it's a variation (with query params, etc.)
10674 - foreach ($normalized_valid_urls as $valid_url) {
10675 - //error_log(" Comparing against valid URL: " . $valid_url);
10676 -
10677 - // Check if the found URL starts with a valid URL (handles query params)
10678 - if (strpos($normalized_found, $valid_url) === 0) {
10679 - // Check what comes after the valid URL
10680 - $remainder = substr($normalized_found, strlen($valid_url));
10681 -
10682 - // Only valid if:
10683 - // 1. Exact match (remainder is empty)
10684 - // 2. Query params (starts with ?)
10685 - // 3. Fragment (starts with #)
10686 - if (empty($remainder) || $remainder[0] === '?' || $remainder[0] === '#') {
10687 - $is_valid = true;
10688 - //error_log(" MATCH: Found URL is valid variation of base URL");
10689 - break;
10690 - } else {
10691 - //error_log(" NOT A MATCH: Found URL extends path beyond valid URL (remainder: " . $remainder . ")");
10692 - }
10693 - }
10694 - // Also check the reverse (in case valid URL has query params)
10695 - if (strpos($valid_url, $normalized_found) === 0) {
10696 - $is_valid = true;
10697 - //error_log(" MATCH: Valid URL starts with found URL");
10698 - break;
10699 - }
10700 - }
10701 -
10702 - if (!$is_valid) {
10703 - //error_log("NO MATCH FOUND - URL should be removed");
10704 - }
10705 - }
10706 -
10707 - // If URL is not valid, remove it from the response
10708 - if (!$is_valid) {
10709 - // Log the removal for debugging
10710 - //error_log("MxChat: Removed hallucinated URL: " . $found_url);
10711 - //error_log("MxChat: Valid URLs were: " . implode(', ', array_slice($normalized_valid_urls, 0, 5)));
10712 -
10713 - $removed_count++;
10714 -
10715 - // Check if URL is part of a markdown link: [text](url)
10716 - $markdown_pattern = '/\[([^\]]+)\]\(' . preg_quote($found_url, '/') . '\)/';
10717 - if (preg_match($markdown_pattern, $cleaned_response)) {
10718 - //error_log("Found markdown link, removing but keeping text");
10719 - // Remove the markdown link but keep the text
10720 - $cleaned_response = preg_replace($markdown_pattern, '$1', $cleaned_response);
10721 - }
10722 - // Check if URL is part of an HTML link: <a href="url">text</a>
10723 - else if (preg_match('/<a[^>]*href=["\']' . preg_quote($found_url, '/') . '["\'][^>]*>(.*?)<\/a>/i', $cleaned_response, $link_match)) {
10724 - //error_log("Found HTML link, removing but keeping text");
10725 - // Remove the HTML link but keep the text
10726 - $link_text = $link_match[1];
10727 - $cleaned_response = preg_replace(
10728 - '/<a[^>]*href=["\']' . preg_quote($found_url, '/') . '["\'][^>]*>.*?<\/a>/i',
10729 - $link_text,
10730 - $cleaned_response
10731 - );
10732 - }
10733 - // Otherwise just remove the bare URL
10734 - else {
10735 - //error_log("Removing bare URL");
10736 - $cleaned_response = str_replace($found_url, '', $cleaned_response);
10737 - }
10738 - }
10739 - }
10740 -
10741 - // Log summary if any URLs were removed
10742 - if ($removed_count > 0) {
10743 - //error_log("MxChat: URL Validation Summary - Removed {$removed_count} hallucinated URL(s)");
10744 - } else {
10745 - //error_log("MxChat: URL Validation Summary - No URLs removed, all were valid");
10746 - }
10747 -
10748 - // Clean up any double spaces or awkward punctuation left behind
10749 - // IMPORTANT: Only collapse horizontal whitespace (spaces/tabs), preserve newlines for markdown formatting
10750 - $cleaned_response = preg_replace('/[^\S\n]+/', ' ', $cleaned_response); // Collapse spaces/tabs but NOT newlines
10751 - $cleaned_response = preg_replace('/[^\S\n]+([.,;:!?])/', '$1', $cleaned_response); // Same for punctuation cleanup
10752 -
10753 - //error_log("Final cleaned response: " . $cleaned_response);
10754 -
10755 - return trim($cleaned_response);
10756 -}
10757 -
10758 -/**
10759 - * AJAX handler to get current chat mode for a session
10760 - */
10761 -public function mxchat_get_current_chat_mode() {
10762 - // Verify nonce for security
10763 - if (!isset($_POST['nonce']) || !wp_verify_nonce($_POST['nonce'], 'mxchat_chat_nonce')) {
10764 - wp_send_json_error(['message' => 'Invalid nonce']);
10765 - wp_die();
10766 - }
10767 -
10768 - $session_id = isset($_POST['session_id']) ? sanitize_text_field($_POST['session_id']) : '';
10769 -
10770 - if (empty($session_id)) {
10771 - wp_send_json_error(['message' => 'Session ID missing']);
10772 - wp_die();
10773 - }
10774 -
10775 - // Get the current chat mode for this session
10776 - $chat_mode = get_option("mxchat_mode_{$session_id}", 'ai');
10777 -
10778 - wp_send_json_success([
10779 - 'chat_mode' => $chat_mode
10780 - ]);
10781 - wp_die();
10782 -}
10783 -
10784 -
10785 -
10786 -}
10787 -?>
1 +<?php
2 +if (!defined('ABSPATH')) {
3 + exit;
4 +}
5 +
6 +class MxChat_Integrator {
7 + private $options;
8 + private $chat_count;
9 +
10 +public function __construct() {
11 + $this->options = get_option('mxchat_options');
12 + $this->chat_count = get_option('mxchat_chat_count', 0);
13 +
14 + // Add WooCommerce hooks
15 + add_action('wp_insert_post', array($this, 'mxchat_handle_product_change'), 10, 3);
16 +
17 + // Ensure embeddings are removed when a product is moved to trash or permanently deleted
18 + add_action('wp_trash_post', array($this, 'mxchat_handle_product_delete'));
19 + add_action('before_delete_post', array($this, 'mxchat_handle_product_delete'));
20 +
21 + add_action('wp_enqueue_scripts', array($this, 'mxchat_enqueue_scripts_styles'));
22 + add_action('wp_ajax_mxchat_handle_chat_request', array($this, 'mxchat_handle_chat_request'));
23 + add_action('wp_ajax_nopriv_mxchat_handle_chat_request', array($this, 'mxchat_handle_chat_request'));
24 +
25 + add_action('wp_ajax_mxchat_dismiss_pre_chat_message', array($this, 'mxchat_dismiss_pre_chat_message'));
26 + add_action('wp_ajax_nopriv_mxchat_dismiss_pre_chat_message', array($this, 'mxchat_dismiss_pre_chat_message'));
27 + // Add the AJAX actions for checking if the pre-chat message was dismissed
28 + add_action('wp_ajax_mxchat_check_pre_chat_message_status', array($this, 'mxchat_check_pre_chat_message_status'));
29 + add_action('wp_ajax_nopriv_mxchat_check_pre_chat_message_status', array($this, 'mxchat_check_pre_chat_message_status'));
30 +
31 + add_action('wp_ajax_mxchat_fetch_conversation_history', [$this, 'mxchat_fetch_conversation_history']);
32 + add_action('wp_ajax_nopriv_mxchat_fetch_conversation_history', [$this, 'mxchat_fetch_conversation_history']);
33 +
34 +
35 + add_action('wp_ajax_mxchat_add_to_cart', [$this, 'mxchat_add_to_cart']);
36 + add_action('wp_ajax_nopriv_mxchat_add_to_cart', [$this, 'mxchat_add_to_cart']);
37 +
38 + if (!wp_next_scheduled('mxchat_reset_rate_limits')) {
39 + wp_schedule_event(time(), 'daily', 'mxchat_reset_rate_limits');
40 + }
41 +
42 + add_action('mxchat_reset_rate_limits', array($this, 'mxchat_reset_rate_limits'));
43 +}
44 +
45 +public function mxchat_handle_product_change($post_id, $post, $update) {
46 + // Ensure this is a product post type
47 + if ($post->post_type !== 'product') {
48 + return;
49 + }
50 +
51 + // Only generate embeddings if the product is published
52 + if ($post->post_status === 'publish') {
53 + // Delay the embedding slightly to ensure all product data is available
54 + add_action('shutdown', function() use ($post_id) {
55 + $product = wc_get_product($post_id);
56 + if ($product && $product->get_price() !== '') {
57 + $this->mxchat_store_product_embedding($product);
58 + } else {
59 + // Optionally, log or handle the case where product data is incomplete
60 + // error_log("Product {$post_id} does not have complete data. Embedding not generated.");
61 + }
62 + });
63 + }
64 +}
65 +
66 +public function mxchat_handle_product_delete($post_id) {
67 + if (get_post_type($post_id) !== 'product') {
68 + return;
69 + }
70 +
71 + global $wpdb;
72 + $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
73 +
74 + // Delete the embedding associated with this product
75 + $wpdb->delete($table_name, array('source_url' => get_permalink($post_id)), array('%s'));
76 +}
77 +
78 +private function mxchat_store_product_embedding($product) {
79 + if (isset($this->options['enable_woocommerce_integration']) && $this->options['enable_woocommerce_integration'] === '1') {
80 +
81 + $source_url = get_permalink($product->get_id());
82 + $regular_price = $product->get_regular_price();
83 + $sale_price = $product->get_sale_price();
84 + $price = $sale_price ?: $regular_price;
85 +
86 + $description = $product->get_description() . "\n\n" .
87 + "Short Description: " . $product->get_short_description() . "\n" .
88 + "Price: " . $regular_price . "\n" .
89 + "Sale Price: " . ($sale_price ?: 'N/A') . "\n" .
90 + "SKU: " . $product->get_sku();
91 +
92 + global $wpdb;
93 + $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
94 +
95 + // Delete any existing embedding for this product
96 + $wpdb->delete($table_name, array('source_url' => $source_url), array('%s'));
97 +
98 + // Submit the new content and embedding to the database
99 + MxChat_Utils::submit_content_to_db($description, $source_url, $this->options['api_key']);
100 + }
101 +}
102 +
103 +
104 +
105 +
106 +
107 + private function mxchat_increment_chat_count() {
108 + $chat_count = get_option('mxchat_chat_count', 0);
109 + $chat_count++;
110 + update_option('mxchat_chat_count', $chat_count);
111 + }
112 +
113 +function mxchat_fetch_conversation_history() {
114 + if (empty($_POST['session_id'])) {
115 + wp_send_json_error(['message' => 'Session ID missing.']);
116 + wp_die();
117 + }
118 +
119 + $session_id = sanitize_text_field($_POST['session_id']);
120 + $history = get_option("mxchat_history_{$session_id}", []); // Retrieve stored history
121 +
122 + if (empty($history)) {
123 + wp_send_json_error(['message' => 'No history found.']);
124 + wp_die();
125 + }
126 +
127 + wp_send_json_success(['conversation' => $history]);
128 + wp_die();
129 +}
130 +private function mxchat_fetch_conversation_history_for_ajax($session_id) {
131 + $history = get_option("mxchat_history_{$session_id}", []); // Retrieve stored history based on session ID
132 + $formatted_history = [];
133 +
134 + // Format the history to align with the expected structure for OpenAI
135 + foreach ($history as $entry) {
136 + $formatted_history[] = [
137 + 'role' => $entry['role'], // Ensure this matches 'user' or 'assistant'
138 + 'content' => $entry['content']
139 + ];
140 + }
141 +
142 + return $formatted_history;
143 +}
144 +private function mxchat_fetch_conversation_history_for_ai($session_id) {
145 + $history = get_option("mxchat_history_{$session_id}", []);
146 +
147 + $formatted_history = [];
148 +
149 + foreach ($history as $entry) {
150 + // Skip messages containing HTML
151 + if ($entry['content'] !== strip_tags($entry['content'])) {
152 + continue;
153 + }
154 +
155 + $formatted_history[] = [
156 + 'role' => $entry['role'],
157 + 'content' => $entry['content']
158 + ];
159 + }
160 +
161 + return $formatted_history;
162 +}
163 +
164 +
165 +private function mxchat_save_chat_message($session_id, $role, $message) {
166 + global $wpdb;
167 + $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
168 +
169 + $user_id = is_user_logged_in() ? get_current_user_id() : 0;
170 + $user_identifier = MxChat_User::mxchat_get_user_identifier();
171 + $user_email = MxChat_User::mxchat_get_user_email();
172 +
173 + $history = get_option("mxchat_history_{$session_id}", []);
174 + $history[] = ['role' => $role, 'content' => $message];
175 + update_option("mxchat_history_{$session_id}", $history);
176 +
177 + $wpdb->insert($table_name, [
178 + 'user_id' => $user_id,
179 + 'user_identifier' => $user_identifier,
180 + 'user_email' => $user_email,
181 + 'session_id' => $session_id,
182 + 'role' => $role,
183 + 'message' => $message,
184 + 'timestamp' => current_time('mysql', 1)
185 + ]);
186 +}
187 +
188 +
189 +public function mxchat_handle_chat_request() {
190 + global $wpdb;
191 +
192 + // Get and sanitize the user identifier
193 + $user_id = $this->mxchat_get_user_identifier();
194 + $user_id = sanitize_key($user_id);
195 +
196 + // Setup rate limiting
197 + $rate_limit_transient_key = 'mxchat_chat_limit_' . $user_id;
198 + $chat_count = get_transient($rate_limit_transient_key) ?: 0;
199 +
200 + // Retrieve the session ID from the client's POST data
201 + $session_id = isset($_POST['session_id']) ? sanitize_text_field($_POST['session_id']) : '';
202 +
203 + if (empty($session_id)) {
204 + wp_send_json_error('Session ID is missing.');
205 + wp_die();
206 + }
207 +
208 + // Check rate limit
209 + $rate_limit_option = $this->options['rate_limit'] ?? 'unlimited';
210 + if ($rate_limit_option !== 'unlimited' && $chat_count >= intval($rate_limit_option)) {
211 + wp_send_json_error(['message' => $this->options['rate_limit_message'] ?? 'Rate limit exceeded. Please try again later.']);
212 + wp_die();
213 + }
214 +
215 + // Increment chat count only if limit is not 'unlimited'
216 + if ($rate_limit_option !== 'unlimited') {
217 + set_transient($rate_limit_transient_key, $chat_count + 1, DAY_IN_SECONDS);
218 + }
219 +
220 + // Validate and sanitize the incoming message
221 + if (empty($_POST['message'])) {
222 + wp_send_json_error('No message received');
223 + wp_die();
224 + }
225 +
226 + $message = sanitize_text_field($_POST['message']);
227 + $this->mxchat_save_chat_message($session_id, 'user', $message);
228 +
229 + // Track email capture and WooCommerce flows
230 + $email_capture_prompt = get_transient('mxchat_email_capture_' . $user_id);
231 + $interaction_count = get_transient('mxchat_email_interaction_count_' . $user_id) ?: 0;
232 + $woocommerce_prompt = get_transient('mxchat_woocommerce_prompt_' . $user_id);
233 +
234 + // Handle email capture flow
235 + if ($email_capture_prompt) {
236 + if (preg_match('/[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,}/i', $message, $matches)) {
237 + $email = $matches[0];
238 + $this->add_email_to_loops($email);
239 + $response = $this->options['email_capture_response'] ?? 'Thank you for providing your email! You\'ve been added to our list.';
240 +
241 + delete_transient('mxchat_email_capture_' . $user_id);
242 + delete_transient('mxchat_email_interaction_count_' . $user_id);
243 + delete_transient('mxchat_woocommerce_prompt_' . $user_id);
244 +
245 + $this->mxchat_save_chat_message($session_id, 'bot', $response);
246 + wp_send_json(['message' => $response]);
247 + wp_die();
248 + } else {
249 + if ($interaction_count >= 3) {
250 + delete_transient('mxchat_email_capture_' . $user_id);
251 + delete_transient('mxchat_email_interaction_count_' . $user_id);
252 + } else {
253 + set_transient('mxchat_email_interaction_count_' . $user_id, ++$interaction_count, 5 * MINUTE_IN_SECONDS);
254 + }
255 + }
256 + }
257 +
258 +
259 + // Initialize variables for storing intent and fallback response data
260 + $this->fallbackResponse = [
261 + 'text' => '',
262 + 'html' => '',
263 + 'images' => [],
264 + ];
265 + $this->productCardHtml = ''; // Initialize product card HTML
266 + $intent_info = '';
267 +
268 + // Step 1: Detect intent and handle intent-based responses if applicable
269 + $intent_matched = $this->mxchat_check_intent_and_invoke_callback($message, $user_id, $session_id);
270 +
271 +/*
272 + // Log the intent match and fallback response
273 + if (defined('WP_DEBUG') && WP_DEBUG) {
274 + error_log("Intent matched: " . ($intent_matched ? 'Yes' : 'No'));
275 + error_log("Fallback response after intent handling: " . print_r($this->fallbackResponse['text'], true));
276 + }
277 +*/
278 +
279 +
280 + // Store any intent-based info from fallbackResponse for use in context
281 + if (!empty($this->fallbackResponse['text'])) {
282 + $intent_info = $this->fallbackResponse['text'];
283 + }
284 +
285 + // Step 2: Check for relevant knowledge database content based on user message embedding
286 + $user_message_embedding = $this->mxchat_generate_embedding($message, $this->options['api_key']);
287 + if (!is_array($user_message_embedding)) {
288 + wp_send_json_error('Error processing your message.');
289 + wp_die();
290 + }
291 +
292 + // Fetch relevant content from the knowledge base using the embedding
293 + $relevant_content = $this->mxchat_find_relevant_content($user_message_embedding);
294 +
295 + // Step 3: Prepare context for AI by combining user query, intent-based info, and knowledge base content
296 + $context_content = "User asked: '{$message}'\n\n";
297 +
298 + // Append intent-based information if any
299 + if (!empty($intent_info)) {
300 + $context_content .= "Relevant intent-based information:\n" . $intent_info . "\n\n";
301 + }
302 +
303 + // Append relevant knowledge base content if any
304 + if (!empty($relevant_content)) {
305 + $context_content .= "Relevant content from knowledge database:\n" . $relevant_content . "\n\n";
306 + }
307 +
308 + // Step 4: Generate AI response based on context and conversation history
309 + $conversation_history = $this->mxchat_fetch_conversation_history_for_ai($session_id);
310 + $this->mxchat_increment_chat_count();
311 +
312 + // Call AI to generate a response with the full context
313 + $response = $this->mxchat_generate_response(
314 + $context_content,
315 + $this->options['api_key'],
316 + $this->options['xai_api_key'],
317 + $this->options['claude_api_key'],
318 + $conversation_history
319 + );
320 +
321 +
322 + // Step 5: Save the response in chat history and prepare to send it back to the user
323 + $this->mxchat_save_chat_message($session_id, 'bot', $response);
324 +
325 + // Step 4: Then save any intent content
326 + if (!empty($this->productCardHtml)) {
327 + $this->mxchat_save_chat_message($session_id, 'bot', $this->productCardHtml);
328 + }
329 +
330 + if (!empty($this->fallbackResponse['html'])) {
331 + $this->mxchat_save_chat_message($session_id, 'bot', $this->fallbackResponse['html']);
332 + }
333 +
334 + $response_data = [
335 + 'text' => $response,
336 + 'html' => !empty($this->productCardHtml) ? $this->productCardHtml : (isset($this->fallbackResponse['html']) ? $this->fallbackResponse['html'] : ''),
337 + 'session_id' => $session_id
338 + ];
339 +
340 +
341 + //error_log("Response Data Sent to Frontend: " . print_r($response_data, true));
342 +
343 + // Send response to the user
344 + wp_send_json($response_data);
345 + wp_die();
346 +}
347 +
348 +// New function to check intents and invoke the callback function
349 +private function mxchat_check_intent_and_invoke_callback($message, $user_id, $session_id) {
350 + global $wpdb;
351 +
352 + // Log that we are starting the intent check
353 + //error_log("Starting intent check for message: " . $message);
354 +
355 + // Embed the user message
356 + $user_embedding = $this->mxchat_generate_embedding($message, $this->options['api_key']);
357 + if (!is_array($user_embedding)) {
358 + // error_log('Error generating embedding for the message.');
359 + wp_send_json_error('Error generating embedding for the message.');
360 + return false;
361 + }
362 +
363 + // Fetch all intents from the database
364 + $table_name = $wpdb->prefix . 'mxchat_intents';
365 + $intents = $wpdb->get_results("SELECT * FROM $table_name");
366 +
367 + // Log if no intents are found
368 + if (empty($intents)) {
369 + //error_log("No intents found in the database.");
370 + }
371 +
372 + $highest_similarity = -INF;
373 + $matched_intent = null;
374 +
375 + // Calculate similarity for each intent
376 + foreach ($intents as $intent) {
377 + // Use unserialize with allowed_classes parameter for enhanced security
378 + $intent_embedding = $intent->embedding_vector
379 + ? unserialize($intent->embedding_vector, ['allowed_classes' => false])
380 + : null;
381 +
382 + if (!is_array($intent_embedding)) {
383 + //error_log("Invalid embedding for intent: " . $intent->intent_label);
384 + continue; // Skip if the embedding is invalid
385 + }
386 +
387 + $similarity = $this->mxchat_calculate_cosine_similarity($user_embedding, $intent_embedding);
388 + //error_log("Similarity for intent '{$intent->intent_label}': " . $similarity);
389 +
390 + if ($similarity > $highest_similarity) {
391 + $highest_similarity = $similarity;
392 + $matched_intent = $intent;
393 + }
394 + }
395 +
396 + // Define the similarity threshold for matching
397 + $similarity_threshold = 0.80;
398 +
399 + // If a match is found above the threshold, call the associated callback
400 + if ($highest_similarity >= $similarity_threshold && $matched_intent) {
401 + //error_log("Matched intent: " . $matched_intent->intent_label . " with similarity: " . $highest_similarity);
402 +
403 + // Ensure the callback function exists before calling it
404 + if (method_exists($this, $matched_intent->callback_function)) {
405 + // Call the intent handler function
406 + call_user_func([$this, $matched_intent->callback_function], $message, $user_id, $session_id);
407 + return true; // Indicate that an intent was matched and handled
408 + } else {
409 + //error_log("Callback function not found: " . $matched_intent->callback_function);
410 + }
411 + } else {
412 + //error_log("No intent matched above the threshold.");
413 + }
414 +
415 + return false; // No intent was matched above the threshold
416 +}
417 +
418 +//verified good
419 +public function mxchat_handle_order_history($message, $user_id, $session_id) {
420 + // Check if WooCommerce is active
421 + if (!class_exists('WooCommerce')) {
422 + $this->fallbackResponse['text'] = "Order functionality is currently unavailable.";
423 + return; // No need to proceed further
424 + }
425 +
426 + // Determine if the user is asking for the "last order" or "all orders"
427 + $queryType = (stripos($message, 'last order') !== false || stripos($message, 'recent order') !== false) ? 'last' : 'all';
428 +
429 + // Fetch the relevant order details
430 + $orderDetails = MxChat_WooCommerce::mxchat_fetch_user_orders_details($queryType);
431 +
432 + // Set the fallback response to order details, which will be used if needed
433 + $this->fallbackResponse['text'] = $orderDetails ?: "No previous orders found.";
434 +}
435 +
436 +
437 +//verified good
438 +public function mxchat_handle_product_inquiry( $message, $user_id, $session_id ) {
439 + // Attempt to retrieve the product ID from the message
440 + $product_id = MxChat_WooCommerce::mxchat_extract_product_id_from_message( $message );
441 +
442 + // Check if there's a previously discussed product for follow-up queries
443 + if ( ! $product_id ) {
444 + $product_id = get_transient( 'mxchat_last_discussed_product_' . $user_id );
445 + }
446 +
447 + if ( $product_id && class_exists( 'WooCommerce' ) ) {
448 + $product = wc_get_product( $product_id );
449 + if ( $product ) {
450 + // Escape and prepare product data
451 + $product_name = esc_html( $product->get_name() );
452 + $product_price = $product->get_price_html(); // Assuming this is safe HTML
453 + $product_image_url = esc_url( wp_get_attachment_url( $product->get_image_id() ) );
454 + $product_url = esc_url( get_permalink( $product_id ) );
455 + $product_id_attr = esc_attr( $product_id );
456 +
457 + // Generate the product card HTML using HEREDOC syntax
458 + $product_card_html = <<<HTML
459 +<div class="mxchat-product-card">
460 + <a href="{$product_url}" target="_blank">
461 + <img src="{$product_image_url}" alt="{$product_name}" class="mxchat-product-image" />
462 + <h3 class="mxchat-product-name">{$product_name}</h3>
463 + </a>
464 + <div class="mxchat-product-price">{$product_price}</div>
465 + <button class="mxchat-add-to-cart-button" data-product-id="{$product_id_attr}">Add to Cart</button>
466 +</div>
467 +HTML;
468 +
469 + // Save the last discussed product
470 + set_transient( 'mxchat_last_discussed_product_' . $user_id, $product_id, HOUR_IN_SECONDS );
471 +
472 + // Save the product card HTML to be appended later
473 + $this->productCardHtml = $product_card_html;
474 +
475 + // Do not send a response here; allow execution to continue
476 + return;
477 + }
478 + }
479 +
480 + // If no product found, set a fallback response
481 + $this->fallbackResponse = __( "I couldn't find details for that product. Could you specify the product name?", 'mxchat' );
482 + return;
483 +}
484 +
485 +//verified good
486 +public function mxchat_handle_email_capture($message, $user_id, $session_id) {
487 + // Log the message safely
488 + //error_log("Triggered email capture intent for message: " . sanitize_text_field($message));
489 +
490 + // Initiate email capture flow
491 + $response = esc_html($this->options['triggered_phrase_response'] ?? "Would you like to join our mailing list? Please provide your email below.");
492 +
493 + set_transient('mxchat_email_capture_' . $user_id, true, 5 * MINUTE_IN_SECONDS);
494 + $this->mxchat_save_chat_message($session_id, 'bot', $response);
495 +
496 + // Respond to the user
497 + wp_send_json(['message' => $response]);
498 + wp_die();
499 +}
500 +
501 +//very good
502 +public function mxchat_generate_image($message, $user_id, $session_id) {
503 + // Prepare a prompt for DALL-E
504 + $prompt = "Create an image of " . sanitize_text_field($message);
505 +
506 + // Use the existing OpenAI API key
507 + $openai_api_key = sanitize_text_field($this->options['api_key']);
508 +
509 + // Call DALL-E to generate an image
510 + $image_response = $this->mxchat_generate_dalle_image($prompt, $openai_api_key);
511 +
512 + // Check if the response contains an image URL
513 + if (isset($image_response['imageUrl'])) {
514 + $image_url = esc_url_raw($image_response['imageUrl']);
515 +
516 + // Construct the HTML with a CSS class instead of inline styles
517 + $response_html = '<img src="' . esc_url($image_url) . '" alt="Generated Image" class="mxchat-generated-image" />';
518 +
519 + $response_text = "Here is the image I generated:";
520 + } else {
521 + $response_text = "I'm sorry, but I couldn't generate an image based on your request.";
522 + $response_html = '';
523 + //error_log("DALL-E image generation error: " . esc_html($image_response['error'] ?? 'Unknown error.'));
524 + }
525 +
526 + // Save both text and HTML responses
527 + $this->mxchat_save_chat_message($session_id, 'bot', $response_text . "\n" . $response_html);
528 +
529 + // Prepare the response data
530 + $response_data = [
531 + 'message' => $response_text,
532 + 'html' => $response_html,
533 + 'image_url' => $image_url ?? '',
534 + ];
535 +
536 + // Send the JSON response
537 + header('Content-Type: application/json; charset=' . get_option('blog_charset'));
538 + echo json_encode($response_data, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
539 + wp_die();
540 +}
541 +private function mxchat_generate_dalle_image($prompt, $api_key, $model = 'dall-e-3', $timeout = 60) {
542 + $api_url = 'https://api.openai.com/v1/images/generations';
543 + $body = json_encode([
544 + 'prompt' => sanitize_text_field($prompt),
545 + 'n' => 1,
546 + 'size' => '1024x1024',
547 + 'model' => sanitize_text_field($model),
548 + ]);
549 +
550 + $args = [
551 + 'body' => $body,
552 + 'headers' => [
553 + 'Content-Type' => 'application/json',
554 + 'Authorization' => 'Bearer ' . sanitize_text_field($api_key),
555 + ],
556 + 'method' => 'POST',
557 + 'timeout' => absint($timeout),
558 + ];
559 +
560 + $response = wp_remote_post($api_url, $args);
561 +
562 + if (is_wp_error($response)) {
563 + //error_log("DALL-E request failed: " . $response->get_error_message());
564 + return ['error' => "Error generating image: " . $response->get_error_message()];
565 + }
566 +
567 + $response_body = json_decode(wp_remote_retrieve_body($response), true);
568 +
569 + if (isset($response_body['data'][0]['url'])) {
570 + return ['imageUrl' => esc_url_raw($response_body['data'][0]['url'])];
571 + } else {
572 + //error_log("DALL-E response error: " . wp_remote_retrieve_body($response));
573 + return ['error' => "Failed to generate image."];
574 + }
575 +}
576 +
577 +//very good
578 +public function mxchat_handle_search_request($message, $user_id, $session_id) {
579 + // Sanitize user input
580 + $search_query = preg_replace('/^search the web for\s+/i', '', $message);
581 + $search_query = preg_replace('/^show me the latest news about\s+/i', '', $message);
582 + $search_query = preg_replace('/^what\'?s the news in\s+/i', '', $message);
583 + $search_query = preg_replace('/^news about\s+/i', '', $message);
584 + $search_query = trim(sanitize_text_field($search_query));
585 +
586 + if (empty($search_query)) {
587 + $this->fallbackResponse = [
588 + 'text' => __("Please provide a valid search query.", 'mxchat'),
589 + ];
590 + return;
591 + }
592 +
593 + // Check if the query is likely related to news
594 + $is_news_search = preg_match("/\bnews\b/i", $message);
595 +
596 + // Retrieve settings
597 + $options = get_option('mxchat_options');
598 +
599 + $api_key = isset($options['brave_api_key']) ? sanitize_text_field($options['brave_api_key']) : '';
600 + $news_count = isset($options['brave_news_count']) ? intval($options['brave_news_count']) : 3;
601 + $country = isset($options['brave_country']) ? sanitize_text_field($options['brave_country']) : 'us';
602 + $language = isset($options['brave_language']) ? sanitize_text_field($options['brave_language']) : 'en';
603 +
604 + if (empty($api_key)) {
605 +
606 + $this->fallbackResponse = [
607 + 'text' => __("API key is not configured. Please set it in the Brave Search Settings.", 'mxchat'),
608 + ];
609 + return;
610 + }
611 +
612 + // Set API endpoint and parameters based on search type
613 + $api_url = $is_news_search
614 + ? 'https://api.search.brave.com/res/v1/news/search'
615 + : 'https://api.search.brave.com/res/v1/web/search';
616 +
617 + $query_args = [
618 + 'q' => urlencode($search_query),
619 + ];
620 +
621 + if ($is_news_search) {
622 + $query_args['count'] = $news_count;
623 + $query_args['country'] = $country;
624 + $query_args['search_lang'] = $language;
625 + }
626 +
627 + $api_url = add_query_arg($query_args, $api_url);
628 +
629 + // Implement caching
630 + $transient_key = 'mxchat_search_' . md5($api_url);
631 + $body = get_transient($transient_key);
632 +
633 + if (false === $body) {
634 + $args = [
635 + 'headers' => [
636 + 'Accept' => 'application/json',
637 + 'Accept-Encoding' => 'gzip',
638 + 'Authorization' => 'Bearer ' . $api_key,
639 + 'x-subscription-token' => $api_key,
640 + ],
641 + 'timeout' => 10,
642 + ];
643 +
644 + $response = wp_remote_get($api_url, $args);
645 +
646 + if (is_wp_error($response)) {
647 +
648 + $this->fallbackResponse = [
649 + 'text' => __("I'm sorry, I couldn't retrieve any information based on your request.", 'mxchat'),
650 + ];
651 + return;
652 + }
653 +
654 + $body = json_decode(wp_remote_retrieve_body($response), true);
655 + set_transient($transient_key, $body, HOUR_IN_SECONDS);
656 + }
657 +
658 + // Process the API response and build a more informative summary
659 + $text_summary = "";
660 +
661 + if ($is_news_search && isset($body['results']) && is_array($body['results']) && count($body['results']) > 0) {
662 + $text_summary = "Here are some recent news articles:\n\n";
663 +
664 + foreach ($body['results'] as $news) {
665 + $title = isset($news['title']) ? esc_html($news['title']) : __('No Title', 'mxchat');
666 + $url = isset($news['url']) ? esc_url($news['url']) : '#';
667 + $description = isset($news['description']) ? esc_html(strip_tags($news['description'])) : __('No description available.', 'mxchat');
668 + $age = isset($news['age']) ? esc_html($news['age']) : '';
669 + $hostname = isset($news['meta_url']['hostname']) ? esc_html($news['meta_url']['hostname']) : '';
670 + $thumbnail = isset($news['thumbnail']['src']) ? esc_url($news['thumbnail']['src']) : '';
671 +
672 + // Build text-only news item summary
673 + $text_summary .= "Title: {$title}\nURL: {$url}\nDescription: {$description}\nPublished: {$age}\n";
674 + if (!empty($hostname)) {
675 + $text_summary .= "Source: {$hostname}\n";
676 + }
677 + if (!empty($thumbnail)) {
678 + $text_summary .= "Thumbnail: ![Image]({$thumbnail})\n";
679 + }
680 + if (!empty($news['extra_snippets'])) {
681 + $extra_snippet_text = implode(" ", $news['extra_snippets']);
682 + $text_summary .= "Additional Info: {$extra_snippet_text}\n";
683 + }
684 + $text_summary .= "\n"; // Separate entries
685 + }
686 + } elseif (!$is_news_search && isset($body['web']['results']) && is_array($body['web']['results']) && count($body['web']['results']) > 0) {
687 + $text_summary = "Here are some relevant articles based on your query:\n\n";
688 +
689 + foreach ($body['web']['results'] as $result) {
690 + $title = isset($result['title']) ? esc_html($result['title']) : __('No Title', 'mxchat');
691 + $url = isset($result['url']) ? esc_url($result['url']) : '#';
692 + $description = isset($result['description']) ? esc_html(strip_tags($result['description'])) : __('No description available.', 'mxchat');
693 + $hostname = isset($result['meta_url']['hostname']) ? esc_html($result['meta_url']['hostname']) : '';
694 + $thumbnail = isset($result['thumbnail']['src']) ? esc_url($result['thumbnail']['src']) : '';
695 +
696 + // Build text-only web item summary
697 + $text_summary .= "Title: {$title}\nURL: {$url}\nDescription: {$description}\n";
698 + if (!empty($hostname)) {
699 + $text_summary .= "Source: {$hostname}\n";
700 + }
701 + if (!empty($thumbnail)) {
702 + $text_summary .= "Thumbnail: ![Image]({$thumbnail})\n";
703 + }
704 + if (!empty($result['extra_snippets'])) {
705 + $extra_snippet_text = implode(" ", $result['extra_snippets']);
706 + $text_summary .= "Additional Info: {$extra_snippet_text}\n";
707 + }
708 + $text_summary .= "\n"; // Separate entries
709 + }
710 + } else {
711 +
712 + $this->fallbackResponse = [
713 + 'text' => __("I'm sorry, I couldn't retrieve any information based on your request.", 'mxchat'),
714 + ];
715 + return;
716 + }
717 +
718 + $this->fallbackResponse = [
719 + 'text' => $text_summary,
720 + ];
721 +
722 +
723 +}
724 +
725 +//very good
726 +public function mxchat_handle_image_search_request($message, $user_id, $session_id) {
727 +
728 + // Step 1: Interpret the search query for better results
729 + $refined_search_query = $this->mxchat_interpret_search_query($message);
730 +
731 +
732 + // If no query was interpreted, return a fallback message
733 + if (empty($refined_search_query)) {
734 + $this->fallbackResponse = [
735 + 'text' => __("I'm sorry, I couldn't interpret your search query. Please specify what you'd like to see images of.", 'mxchat'),
736 + 'html' => "",
737 + ];
738 + return;
739 + }
740 +
741 + // Brave API URL
742 + $api_url = 'https://api.search.brave.com/res/v1/images/search';
743 +
744 + // Retrieve Brave API settings
745 + $options = get_option('mxchat_options');
746 + $api_key = isset($options['brave_api_key']) ? sanitize_text_field($options['brave_api_key']) : '';
747 +
748 + if (empty($api_key)) {
749 +/*
750 + if (defined('WP_DEBUG') && WP_DEBUG) {
751 + error_log("Brave API key is missing.");
752 + }
753 +*/
754 +
755 + $this->fallbackResponse = [
756 + 'text' => __("API key is not configured. Please set it in the Brave Search Settings.", 'mxchat'),
757 + 'html' => "",
758 + ];
759 + return;
760 + }
761 +
762 + $image_count = isset($options['brave_image_count']) ? intval($options['brave_image_count']) : 4;
763 + $safe_search = isset($options['brave_safe_search']) ? sanitize_text_field($options['brave_safe_search']) : 'strict';
764 +
765 + // Append query parameters based on settings
766 + $api_url = add_query_arg([
767 + 'q' => rawurlencode($refined_search_query),
768 + 'count' => $image_count,
769 + 'safesearch' => $safe_search,
770 + ], $api_url);
771 +
772 +/*
773 + // Log the final API URL for the search
774 + if (defined('WP_DEBUG') && WP_DEBUG) {
775 + error_log("Final API URL for Brave Image Search: " . esc_url_raw($api_url));
776 + }
777 +*/
778 +
779 +
780 + // Implement caching
781 + $transient_key = 'mxchat_image_search_' . md5($refined_search_query);
782 + $body = get_transient($transient_key);
783 +
784 + if (false === $body) {
785 + $args = [
786 + 'headers' => [
787 + 'Accept' => 'application/json',
788 + 'Accept-Encoding' => 'gzip',
789 + 'X-Subscription-Token' => $api_key,
790 + ],
791 + 'timeout' => 10,
792 + ];
793 +
794 + $response = wp_remote_get($api_url, $args);
795 +
796 + if (is_wp_error($response)) {
797 +/*
798 + if (defined('WP_DEBUG') && WP_DEBUG) {
799 + error_log("Brave Image API request failed: " . $response->get_error_message());
800 + }
801 +*/
802 +
803 + $this->fallbackResponse = [
804 + 'text' => __("I'm sorry, I couldn't retrieve any images based on your request.", 'mxchat'),
805 + 'html' => "",
806 + ];
807 + return;
808 + }
809 +
810 + $body = json_decode(wp_remote_retrieve_body($response), true);
811 + set_transient($transient_key, $body, HOUR_IN_SECONDS);
812 + }
813 +
814 + // Process the API response
815 + if (isset($body['results']) && is_array($body['results']) && count($body['results']) > 0) {
816 + $html_output = '<div class="mxchat-image-gallery">';
817 +
818 + foreach ($body['results'] as $image) {
819 + $image_url = isset($image['url']) ? esc_url($image['url']) : '';
820 + $thumbnail_url = isset($image['thumbnail']['src']) ? esc_url($image['thumbnail']['src']) : '';
821 + $title = isset($image['title']) ? esc_html($image['title']) : __('Image', 'mxchat');
822 +
823 + if ($image_url && $thumbnail_url) {
824 + $html_output .= '<div class="mxchat-image-item">';
825 + $html_output .= '<strong class="mxchat-image-title">' . $title . '</strong>';
826 + $html_output .= '<a href="' . $image_url . '" target="_blank" rel="noopener noreferrer" class="mxchat-image-link">';
827 + $html_output .= '<img src="' . $thumbnail_url . '" alt="' . $title . '" class="mxchat-image-thumbnail">';
828 + $html_output .= '</a></div>';
829 + }
830 + }
831 +
832 + $html_output .= '</div>';
833 +
834 + $this->fallbackResponse = [
835 + 'text' => "",
836 + 'html' => $html_output,
837 + ];
838 +
839 + // Save response in chat history
840 + $this->mxchat_save_chat_message($session_id, 'bot', $html_output);
841 +
842 + } else {
843 +/*
844 + if (defined('WP_DEBUG') && WP_DEBUG) {
845 + error_log("Brave Image API response did not contain expected data structure or was empty: " . print_r($body, true));
846 + }
847 +*/
848 +
849 + $this->fallbackResponse = [
850 + 'text' => __("I'm sorry, I couldn't retrieve any images based on your request.", 'mxchat'),
851 + 'html' => "",
852 + ];
853 + }
854 +}
855 +public function mxchat_interpret_search_query($user_query) {
856 + $system_prompt = "Interpret the user's request to provide only the essential keywords or phrases for image searching. Remove conversational language, politeness, or extra context. Return a concise search query that doesn't lose any of the original meaning.";
857 +
858 + // Retrieve OpenAI API key using 'api_key' as the option key
859 + $api_key = isset($this->options['api_key']) ? sanitize_text_field($this->options['api_key']) : sanitize_text_field(get_option('mxchat_options')['api_key']);
860 +
861 +/*
862 + // Log the API key check, without exposing the key
863 + if (defined('WP_DEBUG') && WP_DEBUG) {
864 + error_log("Retrieved OpenAI API Key: " . ($api_key ? "Present" : "Missing"));
865 + }
866 +*/
867 +
868 +
869 + if (empty($api_key)) {
870 + //error_log("OpenAI API key is missing.");
871 + return sanitize_text_field($user_query); // Default to the original query if API key is missing
872 + }
873 +
874 + $url = 'https://api.openai.com/v1/chat/completions';
875 + $args = [
876 + 'headers' => [
877 + 'Authorization' => 'Bearer ' . $api_key,
878 + 'Content-Type' => 'application/json',
879 + ],
880 + 'body' => wp_json_encode([
881 + 'model' => 'gpt-3.5-turbo',
882 + 'messages' => [
883 + ['role' => 'system', 'content' => $system_prompt],
884 + ['role' => 'user', 'content' => sanitize_text_field($user_query)],
885 + ],
886 + 'temperature' => 0.2,
887 + 'max_tokens' => 20,
888 + ]),
889 + 'method' => 'POST',
890 + ];
891 +
892 + $response = wp_remote_post($url, $args);
893 +
894 + if (is_wp_error($response)) {
895 + //error_log("OpenAI request failed: " . $response->get_error_message());
896 + return sanitize_text_field($user_query); // Fallback to the original query if there's an error
897 + }
898 +
899 + $body = json_decode(wp_remote_retrieve_body($response), true);
900 +
901 + // Check for a valid response and sanitize output
902 + if (isset($body['choices'][0]['message']['content'])) {
903 + $interpreted_query = sanitize_text_field(trim($body['choices'][0]['message']['content']));
904 +
905 +/*
906 + // Log the interpreted query for debugging
907 + if (defined('WP_DEBUG') && WP_DEBUG) {
908 + error_log("Interpreted search query: " . $interpreted_query);
909 + }
910 +*/
911 +
912 + return $interpreted_query;
913 + } else {
914 + //error_log("Unexpected API response format: " . print_r($body, true));
915 + return sanitize_text_field($user_query);
916 + }
917 +}
918 +
919 +//very good
920 +public function mxchat_handle_add_to_cart_intent($message, $user_id, $session_id) {
921 + // Check if WooCommerce is active before proceeding
922 + if (!class_exists('WooCommerce')) {
923 + // error_log("WooCommerce is not active. Add-to-cart intent cannot be processed.");
924 + return false;
925 + }
926 +
927 + // Sanitize user ID for transient key
928 + $sanitized_user_id = sanitize_key($user_id);
929 +
930 + // Retrieve the last discussed product ID from the transient
931 + $last_product_id = get_transient('mxchat_last_discussed_product_' . $sanitized_user_id);
932 + if ($last_product_id) {
933 + // Attempt to add the product to the WooCommerce cart
934 + $added = WC()->cart->add_to_cart($last_product_id);
935 + $product = wc_get_product($last_product_id);
936 +
937 + if ($added && $product) {
938 + // Escape product name for safety
939 + $product_name = esc_html($product->get_name());
940 +
941 + // Success response if the product is added to the cart
942 + $response = "The product '{$product_name}' has been added to your cart. To proceed to checkout, please type 'checkout'.";
943 + set_transient('mxchat_checkout_prompt_' . $sanitized_user_id, true, 5 * MINUTE_IN_SECONDS);
944 +
945 + // Save the response in chat history and send a JSON response
946 + $this->mxchat_save_chat_message($session_id, 'bot', $response);
947 + wp_send_json(['message' => $response]);
948 + wp_die();
949 + } else {
950 + // Failure response if the product could not be added
951 + $response = "Sorry, I couldn't add the product to your cart. Please try again.";
952 + $this->mxchat_save_chat_message($session_id, 'bot', $response);
953 + wp_send_json(['message' => $response]);
954 + wp_die();
955 + }
956 + } else {
957 + // Prompt the user to specify the product name if no product was found
958 + $response = "I couldn't find the product to add. Please mention the product name again.";
959 + $this->mxchat_save_chat_message($session_id, 'bot', $response);
960 + wp_send_json(['message' => $response]);
961 + wp_die();
962 + }
963 +}
964 +public function mxchat_handle_checkout_intent($message, $user_id, $session_id) {
965 + // Ensure WooCommerce is available and perform checkout actions
966 + if (class_exists('WooCommerce')) {
967 + // Sanitize user ID for transient key
968 + $sanitized_user_id = sanitize_key($user_id);
969 +
970 + $checkout_prompt = get_transient('mxchat_checkout_prompt_' . $sanitized_user_id);
971 +
972 + // Check if there is an active checkout prompt and if the cart has items
973 + if ($checkout_prompt && WC()->cart->get_cart_contents_count() > 0) {
974 + // Get and escape the checkout URL
975 + $checkout_url = wc_get_checkout_url();
976 + $checkout_url = esc_url_raw($checkout_url);
977 +
978 + $response = "Great! Redirecting you to the checkout page...";
979 +
980 + // Clear the checkout prompt transient to avoid duplicate responses
981 + delete_transient('mxchat_checkout_prompt_' . $sanitized_user_id);
982 +
983 + // Save and send the response with the checkout URL for redirection
984 + $this->mxchat_save_chat_message($session_id, 'bot', $response);
985 + wp_send_json(['message' => $response, 'redirect_url' => $checkout_url]);
986 + wp_die();
987 + } else {
988 + // If no active checkout prompt or empty cart, prompt user to add items first
989 + $response = "It seems like there is no active checkout prompt or no items in your cart. Please add a product to the cart first.";
990 + $this->mxchat_save_chat_message($session_id, 'bot', $response);
991 + wp_send_json(['message' => $response]);
992 + wp_die();
993 + }
994 + } else {
995 + // WooCommerce is not available, send an error message
996 + $response = "WooCommerce is not active on this site, so checkout is not possible.";
997 + $this->mxchat_save_chat_message($session_id, 'bot', $response);
998 + wp_send_json(['message' => $response]);
999 + wp_die();
1000 + }
1001 +}
1002 +
1003 +//very good
1004 +public static function mxchat_extract_product_id_from_message($message) {
1005 + // Sanitize the message input
1006 + $message = sanitize_text_field($message);
1007 +
1008 + // Convert Markdown links to plain URLs
1009 + $message = preg_replace('/\[(.*?)\]\((.*?)\)/', '$2', $message);
1010 +
1011 + // Match all URLs in the message
1012 + preg_match_all('/https?:\/\/[^\s]+/', $message, $matches);
1013 +
1014 + if (!empty($matches[0])) {
1015 + foreach ($matches[0] as $url) {
1016 + // Sanitize the URL
1017 + $url = esc_url_raw($url);
1018 +
1019 + // Try to get the post ID from the URL
1020 + $post_id = url_to_postid($url);
1021 +
1022 + if ($post_id) {
1023 + // Check if the post type is 'product'
1024 + if (get_post_type($post_id) === 'product') {
1025 + return $post_id;
1026 + }
1027 + }
1028 + }
1029 + }
1030 + return false;
1031 +}
1032 +
1033 +
1034 +//very good
1035 +private function add_email_to_loops($email) {
1036 + // Sanitize the email
1037 + $email = sanitize_email($email);
1038 +
1039 + // Retrieve and sanitize options
1040 + $api_key = isset($this->options['loops_api_key']) ? sanitize_text_field($this->options['loops_api_key']) : '';
1041 + $mailing_list_id = isset($this->options['loops_mailing_list']) ? sanitize_text_field($this->options['loops_mailing_list']) : '';
1042 +
1043 + // Check for missing API key or mailing list ID
1044 + if (empty($api_key) || empty($mailing_list_id)) {
1045 + //error_log('Loops API key or mailing list ID is missing.');
1046 + return;
1047 + }
1048 +
1049 + $data = array(
1050 + 'email' => $email,
1051 + 'subscribed' => true,
1052 + 'source' => 'MxChat AI Chatbot',
1053 + 'mailingLists' => array($mailing_list_id => true),
1054 + );
1055 +
1056 + $url = 'https://app.loops.so/api/v1/contacts/create';
1057 + $args = array(
1058 + 'body' => wp_json_encode($data),
1059 + 'headers' => array(
1060 + 'Authorization' => 'Bearer ' . $api_key,
1061 + 'Content-Type' => 'application/json',
1062 + ),
1063 + 'method' => 'POST',
1064 + 'timeout' => 45,
1065 + );
1066 +
1067 + $response = wp_remote_post($url, $args);
1068 +
1069 + // Handle errors in the API request
1070 + if (is_wp_error($response)) {
1071 + //error_log('Error adding email to Loops: ' . $response->get_error_message());
1072 + return;
1073 + }
1074 +
1075 + // Check for non-200 HTTP responses
1076 + $response_code = wp_remote_retrieve_response_code($response);
1077 + if ($response_code != 200) {
1078 + $response_body = wp_remote_retrieve_body($response);
1079 + //error_log('Loops API responded with code ' . $response_code . ': ' . $response_body);
1080 + }
1081 +}
1082 +
1083 +private function mxchat_get_user_identifier() {
1084 + return MxChat_User::mxchat_get_user_identifier();
1085 +}
1086 +
1087 +private function mxchat_generate_embedding($text, $api_key) {
1088 + $endpoint = 'https://api.openai.com/v1/embeddings';
1089 +
1090 + $body = wp_json_encode([
1091 + 'input' => $text,
1092 + 'model' => 'text-embedding-ada-002'
1093 + ]);
1094 +
1095 + $args = [
1096 + 'body' => $body,
1097 + 'headers' => [
1098 + 'Content-Type' => 'application/json',
1099 + 'Authorization' => 'Bearer ' . $api_key,
1100 + ],
1101 + 'timeout' => 60,
1102 + 'redirection' => 5,
1103 + 'blocking' => true,
1104 + 'httpversion' => '1.0',
1105 + 'sslverify' => true,
1106 + ];
1107 +
1108 + $response = wp_remote_post($endpoint, $args);
1109 +
1110 + if (is_wp_error($response)) {
1111 + return null;
1112 + }
1113 +
1114 + $response_body = json_decode(wp_remote_retrieve_body($response), true);
1115 +
1116 + if (isset($response_body['data'][0]['embedding']) && is_array($response_body['data'][0]['embedding'])) {
1117 + return $response_body['data'][0]['embedding'];
1118 + } else {
1119 + return null;
1120 + }
1121 + }
1122 +
1123 +private function mxchat_find_relevant_content($user_embedding) {
1124 + global $wpdb;
1125 + $system_prompt_table = $wpdb->prefix . 'mxchat_system_prompt_content';
1126 +
1127 + // Define a cache key for embeddings
1128 + $cache_key = 'mxchat_system_prompt_embeddings';
1129 +
1130 + // Attempt to get the embeddings from the cache
1131 + $embeddings = wp_cache_get($cache_key, 'mxchat_system_prompts');
1132 +
1133 + if ($embeddings === false) {
1134 + // Cache miss, query the database and cache the results
1135 + $query = "SELECT id, embedding_vector FROM {$system_prompt_table}";
1136 + $embeddings = $wpdb->get_results($query);
1137 +
1138 + if ($embeddings === null || empty($embeddings)) {
1139 + return null; // Return null to handle no embeddings gracefully
1140 + }
1141 +
1142 + // Cache the results if successful
1143 + wp_cache_set($cache_key, $embeddings, 'mxchat_system_prompts', 3600); // Cache for 1 hour
1144 + }
1145 +
1146 + $most_relevant_id = null;
1147 + $highest_similarity = -INF;
1148 +
1149 + foreach ($embeddings as $embedding) {
1150 + $database_embedding = $embedding->embedding_vector
1151 + ? unserialize($embedding->embedding_vector, ['allowed_classes' => false])
1152 + : null;
1153 +
1154 + if (is_array($database_embedding) && is_array($user_embedding)) {
1155 + $similarity = $this->mxchat_calculate_cosine_similarity($user_embedding, $database_embedding);
1156 +
1157 + if ($similarity > $highest_similarity) {
1158 + $highest_similarity = $similarity;
1159 + $most_relevant_id = $embedding->id;
1160 + }
1161 + }
1162 + }
1163 +
1164 + if ($most_relevant_id !== null) {
1165 + // Fetch content with product links
1166 + return $this->fetch_content_with_product_links($most_relevant_id);
1167 + }
1168 +
1169 + return null; // Return null if no relevant content is found
1170 +}
1171 +
1172 +private function fetch_content_with_product_links($most_relevant_id) {
1173 + global $wpdb;
1174 + $system_prompt_table = $wpdb->prefix . 'mxchat_system_prompt_content';
1175 +
1176 + // Fetch the article content and associated product URL
1177 + $query = $wpdb->prepare("SELECT article_content, source_url FROM {$system_prompt_table} WHERE id = %d", $most_relevant_id);
1178 + $result = $wpdb->get_row($query);
1179 +
1180 + if ($result) {
1181 + // Append the product link to the content if available
1182 + $content = $result->article_content;
1183 + if (!empty($result->source_url)) {
1184 + $content .= "\n\nFor more details, check out this product: " . esc_url($result->source_url);
1185 + }
1186 + return $content;
1187 + }
1188 +
1189 + return null;
1190 +}
1191 +
1192 +private function mxchat_generate_response($relevant_content, $api_key, $xai_api_key, $claude_api_key, $conversation_history) {
1193 + if (!$relevant_content) {
1194 + return "I'm sorry, I couldn't find relevant information on that topic.";
1195 + }
1196 +
1197 + // Check the selected model
1198 + $selected_model = isset($this->options['model']) ? $this->options['model'] : 'gpt-3.5-turbo';
1199 +
1200 + // Call the appropriate function based on the selected model
1201 + if (strpos($selected_model, 'claude') !== false) {
1202 + return $this->mxchat_generate_response_claude($selected_model, $claude_api_key, $conversation_history, $relevant_content);
1203 + } elseif ($selected_model === 'grok-beta') {
1204 + return $this->mxchat_generate_response_xai($selected_model, $xai_api_key, $conversation_history, $relevant_content);
1205 + } else {
1206 + return $this->mxchat_generate_response_openai($selected_model, $api_key, $conversation_history, $relevant_content);
1207 + }
1208 +}
1209 +
1210 +private function mxchat_generate_response_openai($selected_model, $api_key, $conversation_history, $relevant_content) {
1211 + // Get system prompt instructions from options
1212 + $system_prompt_instructions = isset($this->options['system_prompt_instructions']) ? $this->options['system_prompt_instructions'] : '';
1213 +
1214 + // Add system prompt to relevant content
1215 + $content_with_instructions = $system_prompt_instructions . " " . $relevant_content;
1216 +
1217 + // Prepend system instructions to the conversation history
1218 + array_unshift($conversation_history, [
1219 + 'role' => 'system',
1220 + 'content' => "Here are your instructions: " . $content_with_instructions
1221 + ]);
1222 +
1223 + // Ensure consistency: Replace 'bot' role with 'assistant' in conversation history
1224 + foreach ($conversation_history as &$message) {
1225 + if ($message['role'] === 'bot') {
1226 + $message['role'] = 'assistant';
1227 + }
1228 + }
1229 +
1230 + // Build the request body
1231 + $body = json_encode([
1232 + 'model' => $selected_model,
1233 + 'messages' => $conversation_history,
1234 + 'temperature' => 0.8,
1235 + 'stream' => false
1236 + ]);
1237 +
1238 + // Set up the API request
1239 + $args = [
1240 + 'body' => $body,
1241 + 'headers' => [
1242 + 'Content-Type' => 'application/json',
1243 + 'Authorization' => 'Bearer ' . $api_key,
1244 + ],
1245 + 'timeout' => 60,
1246 + 'redirection' => 5,
1247 + 'blocking' => true,
1248 + 'httpversion' => '1.0',
1249 + 'sslverify' => true,
1250 + ];
1251 +
1252 + // Make the API request
1253 + $response = wp_remote_post('https://api.openai.com/v1/chat/completions', $args);
1254 +
1255 + // Process the response
1256 + if (is_wp_error($response)) {
1257 + return "Sorry, there was an error processing your request.";
1258 + }
1259 +
1260 + $response_body = json_decode(wp_remote_retrieve_body($response), true);
1261 +
1262 + if (isset($response_body['choices'][0]['message']['content'])) {
1263 + return trim($response_body['choices'][0]['message']['content']);
1264 + } else {
1265 + return "Sorry, I couldn't process that request.";
1266 + }
1267 +}
1268 +
1269 +private function mxchat_generate_response_xai($selected_model, $xai_api_key, $conversation_history, $relevant_content) {
1270 + // Get system prompt instructions from options
1271 + $system_prompt_instructions = isset($this->options['system_prompt_instructions']) ? $this->options['system_prompt_instructions'] : '';
1272 +
1273 + // Add system prompt to relevant content
1274 + $content_with_instructions = $system_prompt_instructions . " " . $relevant_content;
1275 +
1276 + // Prepend system instructions to the conversation history
1277 + array_unshift($conversation_history, [
1278 + 'role' => 'system',
1279 + 'content' => "Here are your instructions: " . $content_with_instructions
1280 + ]);
1281 +
1282 + // Ensure consistency: Replace 'bot' role with 'assistant' in conversation history
1283 + foreach ($conversation_history as &$message) {
1284 + if ($message['role'] === 'bot') {
1285 + $message['role'] = 'assistant';
1286 + }
1287 + }
1288 +
1289 + // Build the request body
1290 + $body = json_encode([
1291 + 'model' => $selected_model,
1292 + 'messages' => $conversation_history,
1293 + 'temperature' => 0.8,
1294 + 'stream' => false
1295 + ]);
1296 +
1297 + // Set up the API request
1298 + $args = [
1299 + 'body' => $body,
1300 + 'headers' => [
1301 + 'Content-Type' => 'application/json',
1302 + 'Authorization' => 'Bearer ' . $xai_api_key,
1303 + ],
1304 + 'timeout' => 60,
1305 + 'redirection' => 5,
1306 + 'blocking' => true,
1307 + 'httpversion' => '1.0',
1308 + 'sslverify' => true,
1309 + ];
1310 +
1311 + // Make the API request
1312 + $response = wp_remote_post('https://api.x.ai/v1/chat/completions', $args);
1313 +
1314 + // Process the response
1315 + if (is_wp_error($response)) {
1316 + return "Sorry, there was an error processing your request.";
1317 + }
1318 +
1319 + $response_body = json_decode(wp_remote_retrieve_body($response), true);
1320 +
1321 + if (isset($response_body['choices'][0]['message']['content'])) {
1322 + return trim($response_body['choices'][0]['message']['content']);
1323 + } else {
1324 + return "Sorry, I couldn't process that request.";
1325 + }
1326 +}
1327 +
1328 +private function mxchat_generate_response_claude($selected_model, $claude_api_key, $conversation_history, $relevant_content) {
1329 + // Get system prompt instructions from options for Claude's top-level system parameter
1330 + $system_prompt_instructions = isset($this->options['system_prompt_instructions']) ? $this->options['system_prompt_instructions'] : '';
1331 +
1332 + // Ensure consistency: Replace 'bot' role with 'assistant' in conversation history
1333 + foreach ($conversation_history as &$message) {
1334 + if ($message['role'] === 'bot') {
1335 + $message['role'] = 'assistant';
1336 + }
1337 + }
1338 +
1339 + // Add relevant content as the latest user message in conversation history
1340 + $conversation_history[] = [
1341 + 'role' => 'user',
1342 + 'content' => $relevant_content
1343 + ];
1344 +
1345 + // Build the request body with Claude's expected structure, using system instructions as a top-level parameter
1346 + $body = json_encode([
1347 + 'model' => $selected_model,
1348 + 'max_tokens' => 1000,
1349 + 'temperature' => 0.8,
1350 + 'system' => $system_prompt_instructions, // Set the system prompt at the top level as required
1351 + 'messages' => $conversation_history
1352 + ]);
1353 +
1354 + // Set up the API request with the necessary headers
1355 + $args = [
1356 + 'body' => $body,
1357 + 'headers' => [
1358 + 'Content-Type' => 'application/json',
1359 + 'x-api-key' => $claude_api_key,
1360 + 'anthropic-version' => '2023-06-01',
1361 + ],
1362 + 'timeout' => 60,
1363 + 'redirection' => 5,
1364 + 'blocking' => true,
1365 + 'httpversion' => '1.0',
1366 + 'sslverify' => true,
1367 + ];
1368 +
1369 + // Make the API request
1370 + $response = wp_remote_post('https://api.anthropic.com/v1/messages', $args);
1371 +
1372 +/*
1373 + // Check for errors and log the response for debugging
1374 + if (is_wp_error($response)) {
1375 + error_log("Claude API request error: " . print_r($response->get_error_message(), true));
1376 + return "Sorry, there was an error processing your request.";
1377 + }
1378 +*/
1379 +
1380 +
1381 + // Decode the response and parse according to the expected Claude response structure
1382 + $response_body = json_decode(wp_remote_retrieve_body($response), true);
1383 + //error_log("Claude API response: " . print_r($response_body, true));
1384 +
1385 + // Check if the response has the expected 'content' array with 'text' blocks
1386 + if (isset($response_body['content'][0]['text'])) {
1387 + return trim($response_body['content'][0]['text']);
1388 + } else {
1389 + return "Sorry, I couldn't process that request.";
1390 + }
1391 +}
1392 +
1393 +public function mxchat_dismiss_pre_chat_message() {
1394 + // Get and sanitize the user identifier
1395 + $user_id = $this->mxchat_get_user_identifier();
1396 + $user_id = sanitize_key($user_id);
1397 +
1398 + // Set a transient to track that the user has dismissed the pre-chat message
1399 + $transient_key = 'mxchat_pre_chat_message_dismissed_' . $user_id;
1400 + set_transient($transient_key, true, DAY_IN_SECONDS);
1401 +
1402 + wp_send_json_success();
1403 +}
1404 +
1405 +public function mxchat_check_pre_chat_message_status() {
1406 + // Get and sanitize the user identifier
1407 + $user_id = $this->mxchat_get_user_identifier();
1408 + $user_id = sanitize_key($user_id);
1409 +
1410 + // Check if the transient exists (i.e., if the message was dismissed)
1411 + $transient_key = 'mxchat_pre_chat_message_dismissed_' . $user_id;
1412 + $dismissed = get_transient($transient_key);
1413 +
1414 + // Log the result to see if it's being set correctly
1415 + //error_log("Check pre-chat message dismissed for $user_id: " . ($dismissed ? 'Yes' : 'No'));
1416 +
1417 + if ($dismissed) {
1418 + wp_send_json_success(['dismissed' => true]);
1419 + } else {
1420 + wp_send_json_success(['dismissed' => false]);
1421 + }
1422 +
1423 + wp_die();
1424 +}
1425 +
1426 +private function mxchat_calculate_cosine_similarity($vectorA, $vectorB) {
1427 + if (!is_array($vectorA) || !is_array($vectorB) || empty($vectorA) || empty($vectorB)) {
1428 + return 0;
1429 + }
1430 +
1431 + $dotProduct = array_sum(array_map(function ($a, $b) {
1432 + return $a * $b;
1433 + }, $vectorA, $vectorB));
1434 + $normA = sqrt(array_sum(array_map(function ($a) {
1435 + return $a * $a;
1436 + }, $vectorA)));
1437 + $normB = sqrt(array_sum(array_map(function ($b) {
1438 + return $b * $b;
1439 + }, $vectorB)));
1440 +
1441 + if ($normA == 0 || $normB == 0) {
1442 + return 0;
1443 + }
1444 +
1445 + return $dotProduct / ($normA * $normB);
1446 + }
1447 +
1448 +public function mxchat_enqueue_scripts_styles() {
1449 + // Define version numbers for the styles and scripts
1450 + $chat_style_version = '1.3'; // Replace with your actual version
1451 + $chat_script_version = '1.3'; // Replace with your actual version
1452 +
1453 + // Correct path to the script file
1454 + wp_enqueue_script(
1455 + 'mxchat-chat-js', // Handle for the script
1456 + plugin_dir_url(__FILE__) . '../js/chat-script.js', // Correct path using __FILE__
1457 + array('jquery'), // Dependencies
1458 + $chat_script_version, // Version for cache busting
1459 + true // Load script in footer
1460 + );
1461 +
1462 + // Enqueue the CSS file similarly
1463 + wp_enqueue_style(
1464 + 'mxchat-chat-css', // Handle for the style
1465 + plugin_dir_url(__FILE__) . '../css/chat-style.css', // Correct path using __FILE__
1466 + array(), // No dependencies
1467 + $chat_style_version // Version for cache busting
1468 + );
1469 +
1470 + // Fetch options from the database
1471 + $this->options = get_option('mxchat_options');
1472 +
1473 + // Prepare settings to pass to JavaScript
1474 + $style_settings = array(
1475 + 'ajax_url' => admin_url('admin-ajax.php'),
1476 + 'nonce' => wp_create_nonce('mxchat_chat_nonce'), // Nonce for security
1477 + 'rate_limit_message' => $this->options['rate_limit_message'] ?? 'Rate limit exceeded. Please try again later.',
1478 + 'appendWidgetToBody' => $this->options['append_to_body'] ?? 'off'
1479 + );
1480 +
1481 + // Localize the script with necessary data
1482 + wp_localize_script('mxchat-chat-js', 'mxchatChat', $style_settings);
1483 + }
1484 +
1485 +public function mxchat_reset_rate_limits() {
1486 + global $wpdb;
1487 +
1488 + // Define a cache key pattern for rate limits
1489 + $cache_key_pattern = 'mxchat_chat_limit_%';
1490 +
1491 + // Retrieve all option names matching the pattern
1492 + // phpcs:ignore WordPress.DB.DirectDatabaseQuery.NoCaching, WordPress.DB.DirectDatabaseQuery.DirectQuery
1493 + $option_names = $wpdb->get_col("SELECT option_name FROM {$wpdb->options} WHERE option_name LIKE 'mxchat_chat_limit_%'");
1494 +
1495 + // db call ok; no-cache ok
1496 + // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery -- db call ok
1497 + $wpdb->query("DELETE FROM {$wpdb->options} WHERE option_name LIKE 'mxchat_chat_limit_%'");
1498 +
1499 + // Clear the relevant cache entries
1500 + foreach ($option_names as $option_name) {
1501 + wp_cache_delete($option_name, 'options');
1502 + }
1503 +
1504 + // Optionally, clear a general cache if you have one
1505 + wp_cache_delete('mxchat_all_chat_limits', 'options');
1506 + }
1507 +
1508 +private function mxchat_fetch_woocommerce_products() {
1509 + // Ensure WooCommerce is active
1510 + if (!class_exists('WooCommerce')) {
1511 + return [];
1512 + }
1513 +
1514 + $args = array(
1515 + 'post_type' => 'product',
1516 + 'post_status' => 'publish',
1517 + 'posts_per_page' => -1,
1518 + );
1519 +
1520 + $products = get_posts($args);
1521 + $product_data = [];
1522 +
1523 + foreach ($products as $product) {
1524 + $product_id = $product->ID;
1525 + $product_obj = wc_get_product($product_id);
1526 +
1527 + $product_data[] = array(
1528 + 'id' => $product_id,
1529 + 'name' => $product_obj->get_name(),
1530 + 'description' => $product_obj->get_description(),
1531 + 'short_description' => $product_obj->get_short_description(),
1532 + 'url' => get_permalink($product_id),
1533 + 'price' => $product_obj->get_regular_price(),
1534 + 'sale_price' => $product_obj->get_sale_price(),
1535 + 'stock_status' => $product_obj->get_stock_status(),
1536 + 'sku' => $product_obj->get_sku(),
1537 + 'in_stock' => $product_obj->is_in_stock(),
1538 + 'total_sales' => $product_obj->get_total_sales(),
1539 + );
1540 + }
1541 +
1542 + return $product_data;
1543 +}
1544 +
1545 +}
1546 +?>