← All changes | includes/class-mxchat-integrator.php +271 -10507 3.2.5 → 1.0.8 View file →

		@@ -4,4588 +4,261 @@
4	4	}
5	5
6	6	class MxChat_Integrator {
7	7	private $options;
8		- private $prompts_options;
9	8	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 $streaming_headers_sent = false; // Track if streaming headers have been sent
18	9
19		-/**
20		- * Setup streaming headers - call this right before actually streaming
21		- * This delays header setup to allow actions/forms to return JSON responses
22		- */
23		-private function setup_streaming_headers() {
24		- if ($this->streaming_headers_sent || headers_sent()) {
25		- return false;
26		- }
	10	+public function __construct() {
	11	+ $this->options = get_option('mxchat_options');
	12	+ $this->chat_count = get_option('mxchat_chat_count', 0);
27	13
28		- // Disable output buffering
29		- while (ob_get_level()) {
30		- ob_end_flush();
31		- }
	14	+ // Add WooCommerce hooks
	15	+ add_action('wp_insert_post', array($this, 'mxchat_handle_product_change'), 10, 3);
32	16
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');
	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'));
38	20
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	21	add_action('wp_enqueue_scripts', array($this, 'mxchat_enqueue_scripts_styles'));
57	22	add_action('wp_ajax_mxchat_handle_chat_request', array($this, 'mxchat_handle_chat_request'));
58	23	add_action('wp_ajax_nopriv_mxchat_handle_chat_request', array($this, 'mxchat_handle_chat_request'));
59	24	add_action('wp_ajax_mxchat_dismiss_pre_chat_message', array($this, 'mxchat_dismiss_pre_chat_message'));
60	25	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($this, 'mxchat_refresh_nonce'));
118	26
119		- // Auto-email transcript action
120		- add_action('mxchat_send_delayed_transcript', array($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', $chat_count);
	27	+ if (!wp_next_scheduled('mxchat_reset_rate_limits')) {
	28	+ wp_schedule_event(time(), 'daily', 'mxchat_reset_rate_limits');
150	29	}
151	30
152		-function mxchat_fetch_conversation_history() {
153		- if (empty($_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' => $chat_mode
188		- ]);
189		- wp_die();
	31	+ add_action('mxchat_reset_rate_limits', array($this, 'mxchat_reset_rate_limits'));
190	32	}
191		-private function mxchat_fetch_conversation_history_for_ai($session_id, $session_start_timestamp = 0) {
192		- $history = get_option("mxchat_history_{$session_id}", []);
193	33
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);
	34	+public function mxchat_handle_product_change($post_id, $post, $update) {
	35	+ // Ensure this is a product post type
	36	+ if ($post->post_type !== 'product') {
	37	+ return;
206	38	}
207	39
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);
	40	+ // Only generate embeddings if the product is published
	41	+ if ($post->post_status === 'publish') {
	42	+ // Delay the embedding slightly to ensure all product data is available
	43	+ add_action('shutdown', function() use ($post_id) {
	44	+ $product = wc_get_product($post_id);
	45	+ if ($product && $product->get_price() !== '') {
	46	+ $this->mxchat_store_product_embedding($product);
253	47	} else {
254		- break;
	48	+ // Optionally, log or handle the case where product data is incomplete
	49	+ error_log("Product {$post_id} does not have complete data. Embedding not generated.");
255	50	}
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;
	51	+ });
265	52	}
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 $formatted_history;
278	53	}
279	54
280		-public function register_routes() {
281		- //error_log(esc_html__('Registering MxChat REST routes', 'mxchat'));
282		-
283		- register_rest_route('mxchat/v1', '/stream', [
284		- 'methods' => 'GET',
285		- 'callback' => [$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;
	55	+public function mxchat_handle_product_delete($post_id) {
	56	+ if (get_post_type($post_id) !== 'product') {
	57	+ return;
325	58	}
326	59
327		- $chat_mode = get_option("mxchat_mode_{$session_id}", 'ai');
328		- return $chat_mode === 'agent';
329		-}
	60	+ global $wpdb;
	61	+ $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
330	62
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);
	63	+ // Delete the embedding associated with this product
	64	+ $wpdb->delete($table_name, array('source_url' => get_permalink($post_id)), array('%s'));
367	65	}
368	66
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 = $this->options['telegram_webhook_secret'] ?? '';
	67	+private function mxchat_store_product_embedding($product) {
	68	+ if (isset($this->options['enable_woocommerce_integration']) && $this->options['enable_woocommerce_integration'] === '1') {
377	69
378		- //error_log('[MxChat Telegram DEBUG] verify_telegram_request called');
379		- //error_log('[MxChat Telegram DEBUG] Stored secret: ' . (empty($secret_token) ? 'EMPTY' : substr($secret_token, 0, 10) . '...'));
	70	+ $source_url = get_permalink($product->get_id());
	71	+ $regular_price = $product->get_regular_price();
	72	+ $sale_price = $product->get_sale_price();
	73	+ $price = $sale_price ?: $regular_price;
380	74
381		- if (empty($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		- }
	75	+ $description = $product->get_description() . "\n\n" .
	76	+ "Short Description: " . $product->get_short_description() . "\n" .
	77	+ "Price: " . $regular_price . "\n" .
	78	+ "Sale Price: " . ($sale_price ?: 'N/A') . "\n" .
	79	+ "SKU: " . $product->get_sku();
386	80
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');
	81	+ global $wpdb;
	82	+ $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
389	83
390		- //error_log('[MxChat Telegram DEBUG] Request token: ' . (empty($request_token) ? 'EMPTY' : substr($request_token, 0, 10) . '...'));
	84	+ // Delete any existing embedding for this product
	85	+ $wpdb->delete($table_name, array('source_url' => $source_url), array('%s'));
391	86
392		- if (empty($request_token)) {
393		- //error_log('[MxChat Telegram DEBUG] Request rejected: No token in header');
394		- return false;
	87	+ // Submit the new content and embedding to the database
	88	+ MxChat_Utils::submit_content_to_db($description, $source_url, $this->options['api_key']);
395	89	}
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	90	}
402	91
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	92
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	93
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	94
417		- $history = get_option("mxchat_history_{$session_id}", []);
418	95
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";
	96	+ private function mxchat_increment_chat_count() {
	97	+ $chat_count = get_option('mxchat_chat_count', 0);
	98	+ $chat_count++;
	99	+ update_option('mxchat_chat_count', $chat_count);
430	100	}
431		- flush();
432		- exit;
433		-}
434	101
435		-
436		-
437		-
438		-private function mxchat_save_chat_message($session_id, $role, $message, $originating_page = null, $rag_context = null) {
	102	+public function mxchat_fetch_conversation_history_for_ajax($session_id) {
439	103	global $wpdb;
440	104	$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'] = $stored_originating['title'] ?? '';
611		- }
612		- }
613		- }
614	105
615		- // Add RAG context if provided (for bot messages)
616		- if ($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')
	106	+ // Prepare and execute the query safely
	107	+ $chat_transcripts = $wpdb->get_results(
	108	+ $wpdb->prepare("SELECT * FROM $table_name WHERE session_id = %s ORDER BY timestamp ASC", sanitize_text_field($session_id))
682	109	);
683		-
684		- // Send email
685		- return wp_mail($to, $subject, $message);
686		-}
687	110
688		-/**
689		- * Schedule delayed transcript email for a session
690		- * Reschedules if a new user message is received
691		- */
692		-private function schedule_delayed_transcript_email($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;
	111	+ // Check if results are empty
	112	+ if (empty($chat_transcripts)) {
	113	+ return [];
698	114	}
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	115
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;
	116	+ // Build the conversation history
	117	+ $conversation_history = [];
	118	+ foreach ($chat_transcripts as $transcript) {
	119	+ $conversation_history[] = [
	120	+ 'role' => $transcript->role,
	121	+ 'content' => $transcript->message
	122	+ ];
738	123	}
739	124
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;
	125	+ return $conversation_history;
771	126	}
772	127
773		-/**
774		- * Send the delayed transcript email with .txt attachment
775		- */
776		-public function mxchat_send_delayed_transcript($session_id) {
777		- global $wpdb;
778	128
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} => {$name}");
920		- }
921		-
922		- // 2) (Optional) Also store in DB if a row already exists
	129	+private function mxchat_save_chat_message($session_id, $role, $message) {
923	130	global $wpdb;
924	131	$table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
925	132
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);
	133	+ $user_id = is_user_logged_in() ? get_current_user_id() : 0;
	134	+ $user_identifier = MxChat_User::mxchat_get_user_identifier();
	135	+ $user_email = MxChat_User::mxchat_get_user_email();
929	136
930		- //error_log("[DEBUG] handle_save_email_and_response -> session_count for {$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();
	137	+ $wpdb->insert($table_name, [
	138	+ 'user_id' => $user_id,
	139	+ 'user_identifier' => $user_identifier,
	140	+ 'user_email' => $user_email,
	141	+ 'session_id' => $session_id,
	142	+ 'role' => $role,
	143	+ 'message' => $message,
	144	+ 'timestamp' => current_time('mysql', 1)
	145	+ ]);
959	146	}
960	147
961		-public function mxchat_check_email_provided() {
962		- //error_log('[DEBUG] ---------- mxchat_check_email_provided START ----------');
963		-
964		- nocache_headers();
965		-
966		- if (!isset($_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	148	public function mxchat_handle_chat_request() {
1059	149	global $wpdb;
1060	150
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	151	// Get and sanitize the user identifier
	152	+ $user_id = $this->mxchat_get_user_identifier();
1131	153	$user_id = sanitize_key($user_id);
1132	154
1133		- // Check rate limit using new settings structure
1134		- $rate_limit_result = $this->check_rate_limit();
	155	+ // Manage rate limiting
	156	+ $rate_limit_transient_key = 'mxchat_chat_limit_' . $user_id;
	157	+ $chat_count = get_transient($rate_limit_transient_key);
	158	+ $session_transient_key = 'mxchat_chat_session_' . $user_id;
	159	+ $session_id = get_transient($session_transient_key);
1135	160
1136		- if ($rate_limit_result !== true) {
1137		- wp_send_json([
1138		- 'success' => false,
1139		- 'message' => $rate_limit_result['message'],
1140		- 'status' => 'rate_limit_exceeded'
1141		- ]);
1142		- wp_die();
	161	+ if ($chat_count === false) {
	162	+ $chat_count = 0;
1143	163	}
1144	164
1145		- // Rest of your existing code...
1146		- $session_id = isset($_POST['session_id']) ? sanitize_text_field($_POST['session_id']) : '';
1147		-
1148		- // Treat the literal strings 'null' / 'undefined' as missing too. Browser edge cases
1149		- // (Safari ITP, private mode, cross-origin iframes with partitioned storage) can cause
1150		- // the frontend FormData.append() to stringify a null session_id into the literal
1151		- // "null", which would otherwise pass empty() and pollute the transcripts table with
1152		- // ghost sessions that group every visitor's first message under one row.
1153		- if ($session_id === 'null' || $session_id === 'undefined') {
1154		- $session_id = '';
	165	+ if ($session_id === false) {
	166	+ $session_id = uniqid('mxchat_chat_', true);
	167	+ set_transient($session_transient_key, $session_id, DAY_IN_SECONDS); // Store session ID for a day
1155	168	}
1156	169
1157		- if (empty($session_id)) {
1158		- wp_send_json_error(esc_html__('Session ID is missing.', 'mxchat'));
1159		- wp_die();
1160		- }
	170	+ $rate_limit_option = isset($this->options['rate_limit']) ? $this->options['rate_limit'] : 'unlimited';
1161	171
1162		- // Update session owner if it changed (e.g. IP changed due to network switch)
1163		- // The session ID itself is the authentication — if the client has it, they own it
1164		- $current_user_identifier = MxChat_User::mxchat_get_user_identifier();
1165		- $session_owner = get_option("mxchat_session_owner_{$session_id}");
	172	+ // Check if rate limit is not 'unlimited'
	173	+ if ($rate_limit_option !== 'unlimited') {
	174	+ $rate_limit = intval($rate_limit_option);
1166	175
1167		- if (!$session_owner || $session_owner !== $current_user_identifier) {
1168		- update_option("mxchat_session_owner_{$session_id}", $current_user_identifier, 'no');
1169		- }
1170		-
1171		- // Validate and sanitize the incoming message
1172		- if (empty($_POST['message'])) {
1173		- wp_send_json_error(esc_html__('No message received.', 'mxchat'));
1174		- wp_die();
1175		- }
1176		-
1177		-
1178		- // Track originating page for first message in session
1179		- $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
1180		-
1181		- // Check if originating page columns exist
1182		- $columns_exist = $wpdb->get_var("SHOW COLUMNS FROM $table_name LIKE 'originating_page_url'");
1183		-
1184		- if ($columns_exist) {
1185		- // Check if this session already has messages
1186		- $message_count = $wpdb->get_var($wpdb->prepare(
1187		- "SELECT COUNT(*) FROM $table_name WHERE session_id = %s",
1188		- $session_id
1189		- ));
1190		-
1191		- // If this is the first message in the session
1192		- if ($message_count == 0) {
1193		- // Get originating page from JavaScript (preferred) or HTTP_REFERER (fallback)
1194		- $originating_url = '';
1195		- $originating_title = '';
1196		-
1197		- // Try to get from POST data first (sent by JavaScript)
1198		- if (isset($_POST['current_page_url'])) {
1199		- $originating_url = esc_url_raw($_POST['current_page_url']);
1200		- $originating_title = isset($_POST['current_page_title'])
1201		- ? sanitize_text_field($_POST['current_page_title'])
1202		- : '';
1203		- }
1204		- // Fallback to HTTP_REFERER if not provided by JavaScript
1205		- else if (isset($_SERVER['HTTP_REFERER'])) {
1206		- $originating_url = esc_url_raw($_SERVER['HTTP_REFERER']);
1207		- }
1208		-
1209		- // Generate title if we have URL but no title
1210		- if ($originating_url && empty($originating_title)) {
1211		- $parsed_url = parse_url($originating_url);
1212		- $path = isset($parsed_url['path']) ? trim($parsed_url['path'], '/') : '';
1213		-
1214		- if (empty($path) || $path === 'index.php' || $path === 'index.html') {
1215		- $originating_title = 'Homepage';
1216		- } else {
1217		- // Clean up the path to make a readable title
1218		- $originating_title = str_replace(['-', '_', '/', '.php', '.html'], ' ', $path);
1219		- $originating_title = ucwords(trim($originating_title));
1220		- }
1221		- }
1222		-
1223		- // Store for later use when saving the message
1224		- $this->pending_originating_page = [
1225		- 'url' => $originating_url,
1226		- 'title' => $originating_title
1227		- ];
1228		- }
1229		- }
1230		-
1231		-
1232		-
1233		- // Get page context if provided
1234		- $page_context = null;
1235		- if (isset($_POST['page_context']) && !empty($_POST['page_context'])) {
1236		- $page_context_raw = stripslashes($_POST['page_context']);
1237		- $page_context = json_decode($page_context_raw, true);
1238		-
1239		- // Validate page context structure
1240		- if (is_array($page_context) &&
1241		- isset($page_context['url']) &&
1242		- isset($page_context['title']) &&
1243		- isset($page_context['content'])) {
1244		-
1245		- // Sanitize page context
1246		- $page_context['url'] = esc_url_raw($page_context['url']);
1247		- $page_context['title'] = sanitize_text_field($page_context['title']);
1248		- $page_context['content'] = wp_kses_post($page_context['content']);
1249		- } else {
1250		- $page_context = null;
1251		- }
1252		- }
1253		-
1254		- // Modify the message sanitization to preserve PHP tags in code blocks
1255		- $allowed_tags = [
1256		- 'pre' => [],
1257		- 'code' => ['class' => true],
1258		- 'span' => ['class' => true],
1259		- 'div' => ['class' => true],
1260		- ];
1261		-
1262		- // First preserve code blocks
1263		- $message = preg_replace_callback('/<pre><code.*?>.*?<\/code><\/pre>/s', function($matches) {
1264		- return htmlspecialchars_decode($matches[0]);
1265		- }, $_POST['message']);
1266		-
1267		- // Then apply sanitization
1268		- $message = wp_kses($message, $allowed_tags);
1269		-
1270		- // Preserve code blocks from markdown conversion
1271		- $message = preg_replace('/```(\w+)?\s*([\s\S]+?)```/s', '<pre><code class="$1">$2</code></pre>', $message);
1272		- $message = apply_filters('mxchat_filter_message', $message, 'prompt', $session_id);
1273		-
1274		- // ===== SIMPLIFIED TESTING PANEL INITIALIZATION =====
1275		- // Always initialize testing data for admins (no toggle needed)
1276		- $testing_data = null;
1277		- if (current_user_can('administrator')) {
1278		- // For vision messages, use the original user message for the query display
1279		- $query_for_testing = $message;
1280		- if (isset($_POST['vision_processed']) && $_POST['vision_processed'] && isset($_POST['original_user_message'])) {
1281		- $query_for_testing = sanitize_textarea_field($_POST['original_user_message']);
1282		- }
1283		-
1284		- $testing_data = [
1285		- 'query' => $query_for_testing,
1286		- 'timestamp' => time(),
1287		- 'top_matches' => [],
1288		- 'action_matches' => [], // Initialize action matches array
1289		- 'page_context' => $page_context, // Include page context in testing data
1290		- 'is_vision' => isset($_POST['vision_processed']) && $_POST['vision_processed'],
1291		- 'bot_id' => $bot_id // Include bot ID in testing data
1292		- ];
1293		-
1294		- // Get similarity threshold from bot options or default options
1295		- $similarity_threshold = isset($current_options['similarity_threshold'])
1296		- ? ((int) $current_options['similarity_threshold']) / 100
1297		- : 0.35;
1298		-
1299		- $testing_data['similarity_threshold'] = $similarity_threshold;
1300		-
1301		- // Determine knowledge base type using bot-specific config
1302		- $bot_pinecone_config = $this->get_bot_pinecone_config($bot_id);
1303		- $use_pinecone = isset($bot_pinecone_config['use_pinecone']) ? $bot_pinecone_config['use_pinecone'] : false;
1304		- $testing_data['knowledge_base_type'] = $use_pinecone ? 'Pinecone' : 'WordPress Database';
1305		- }
1306		- // ===== END SIMPLIFIED TESTING INITIALIZATION =====
1307		-
1308		- // Add debug before and after:
1309		- //error_log('MxChat Core: About to call mxchat_pre_process_message filter with message: ' . $message);
1310		- $pre_processed_result = apply_filters('mxchat_pre_process_message', $message, $user_id, $session_id);
1311		- //error_log('MxChat Core: Filter returned: ' . (is_array($pre_processed_result) ? 'array' : $pre_processed_result));
1312		-
1313		-
1314		- // If the pre-processing returned a result (not the original message), use it directly
1315		- if (is_array($pre_processed_result) && isset($pre_processed_result['text'])) {
1316		- // Save the AI response
1317		- $this->mxchat_save_chat_message($session_id, 'bot', $pre_processed_result['text']);
1318		-
1319		- // Save HTML content if provided
1320		- if (!empty($pre_processed_result['html'])) {
1321		- $this->mxchat_save_chat_message($session_id, 'bot', $pre_processed_result['html']);
1322		- }
1323		-
1324		- // Add testing data if admin
1325		- $response_data = [
1326		- 'text' => $pre_processed_result['text'],
1327		- 'html' => $pre_processed_result['html'] ?? '',
1328		- 'session_id' => $session_id
1329		- ];
1330		-
1331		- if ($testing_data !== null) {
1332		- $response_data['testing_data'] = $testing_data;
1333		- }
1334		-
1335		- wp_send_json($response_data);
	176	+ if ($chat_count >= $rate_limit) {
	177	+ wp_send_json_error('Rate limit exceeded. Please try again later.');
1336	178	wp_die();
1337	179	}
1338		-
1339		- // Save the user's message - handle vision processed messages differently
1340		- if (isset($_POST['vision_processed']) && $_POST['vision_processed'] && isset($_POST['original_user_message'])) {
1341		- // For vision messages, save the original user message with image indicator
1342		- $original_message = sanitize_textarea_field($_POST['original_user_message']);
1343		- if (isset($_POST['vision_images_count']) && $_POST['vision_images_count'] > 0) {
1344		- $image_count = intval($_POST['vision_images_count']);
1345		- $original_message .= " [{$image_count} image(s)]";
1346		- }
1347		- $this->mxchat_save_chat_message($session_id, 'user', $original_message);
1348		- } else {
1349		- // Regular message - save as normal
1350		- $this->mxchat_save_chat_message($session_id, 'user', $message);
1351		- }
1352		-
1353		-
1354		- if (is_email($message)) {
1355		- // Add the email to Loops
1356		- $this->add_email_to_loops($message);
1357		-
1358		- // Get the user's success message instruction using current_options
1359		- $user_success_message = $current_options['email_capture_response'] ?? __('Thank you for providing your email! You\'ve been added to our list.', 'mxchat');
1360		-
1361		- // Set instruction for AI using the user's success message
1362		- $this->current_action_instruction = $user_success_message;
1363		-
1364		- // Clear the email capture transient since we got the email
1365		- delete_transient('mxchat_email_capture_' . $user_id);
1366		- }
1367		-
1368		- // Check if we're in an email capture flow but user hasn't provided email yet
1369		- elseif (get_transient('mxchat_email_capture_' . $user_id)) {
1370		- // Check if the message contains an email (not the whole message being an email)
1371		- if (preg_match('/\b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Z|a-z]{2,}\b/', $message, $matches)) {
1372		- $extracted_email = $matches[0];
1373		-
1374		- // Add the extracted email to Loops
1375		- $this->add_email_to_loops($extracted_email);
1376		-
1377		- // Get the user's success message instruction using current_options
1378		- $user_success_message = $current_options['email_capture_response'] ?? __('Thank you for providing your email! You\'ve been added to our list.', 'mxchat');
1379		-
1380		- // Set instruction for AI using the user's success message
1381		- $this->current_action_instruction = $user_success_message;
1382		-
1383		- // Clear the email capture transient since we got the email
1384		- delete_transient('mxchat_email_capture_' . $user_id);
1385		- }
1386		- // If no email found but we're in capture mode, remind them
1387		- else {
1388		- // Get the original instruction to remind them using current_options
1389		- $original_instruction = $current_options['triggered_phrase_response'] ?? __("Please provide your email address.", 'mxchat');
1390		- $this->current_action_instruction = $original_instruction;
1391		- }
1392		- }
1393		-
1394		- $intent_info = '';
1395		-
1396		- // Check chat mode
1397		- $chat_mode = get_option("mxchat_mode_{$session_id}", 'ai');
1398		-
1399		- // Handle agent mode
1400		- // Handle agent mode
1401		- if ($chat_mode === 'agent') {
1402		- // First, check for switch intent before doing anything else
1403		- $intent_matched = $this->mxchat_check_intent_and_invoke_callback($message, $user_id, $session_id);
1404		-
1405		- // Capture action analysis for testing panel after intent check
1406		- if ($testing_data !== null && isset($this->last_action_analysis) && !empty($this->last_action_analysis)) {
1407		- $testing_data['action_matches'] = $this->last_action_analysis;
1408		- }
1409		-
1410		- // Around line 506, in the agent mode handling section:
1411		- if ($intent_matched && !empty($this->fallbackResponse['text'])) {
1412		- // Update chat mode first
1413		- update_option("mxchat_mode_{$session_id}", 'ai');
1414		-
1415		- // Clear any existing PDF context to start fresh
1416		- $this->clear_pdf_transients($session_id);
1417		-
1418		- // Prepare clean switch response with explicit chat_mode
1419		- $response_data = [
1420		- 'text' => $this->fallbackResponse['text'],
1421		- 'html' => $this->fallbackResponse['html'] ?? '',
1422		- 'session_id' => $session_id,
1423		- 'chat_mode' => 'ai' // EXPLICITLY SET THIS
1424		- ];
1425		-
1426		- if ($testing_data !== null) {
1427		- $response_data['testing_data'] = $testing_data;
1428		- }
1429		-
1430		- // Save the mode switch message
1431		- $this->mxchat_save_chat_message($session_id, 'system', esc_html__('Switched to AI chat mode', 'mxchat'));
1432		- $this->mxchat_save_chat_message($session_id, 'bot', $this->fallbackResponse['text']);
1433		-
1434		- // Send response and exit
1435		- wp_send_json($response_data);
1436		- wp_die();
1437		- } elseif (!$intent_matched) {
1438		- // No intent matched, handle live agent message
1439		- try {
1440		- $this->mxchat_send_user_message_to_agent($message, $user_id, $session_id);
1441		-
1442		- $agent_response = [
1443		- 'status' => 'waiting_for_agent',
1444		- 'message' => esc_html__('Message sent to live agent.', 'mxchat')
1445		- ];
1446		-
1447		- if ($testing_data !== null) {
1448		- $agent_response['testing_data'] = $testing_data;
1449		- }
1450		-
1451		- wp_send_json_success($agent_response);
1452		- } catch (\Exception $e) {
1453		- wp_send_json_error(esc_html__('Failed to send message to agent', 'mxchat'));
1454		- }
1455		- wp_die();
1456		- }
1457		- }
1458		-
1459		- // Step 1: Check for new PDF URL in the message
1460		- if (!isset($_POST['vision_processed']) && preg_match('/https?:\/\/[^\s"]+/i', $message, $matches)) {
1461		- $new_pdf_url = $matches[0];
1462		-
1463		- // Check if this is likely a PDF-related request
1464		- $pdf_keywords = ['pdf', 'document', 'read', 'analyze'];
1465		- $is_pdf_request = false;
1466		-
1467		- foreach ($pdf_keywords as $keyword) {
1468		- if (stripos($message, $keyword) !== false) {
1469		- $is_pdf_request = true;
1470		- break;
1471		- }
1472		- }
1473		-
1474		- // If it looks like a PDF request or we're waiting for a PDF URL
1475		- if ($is_pdf_request || get_transient('mxchat_waiting_for_pdf_url_' . $session_id)) {
1476		- // Validate HTTPS
1477		- if (wp_http_validate_url($new_pdf_url) && parse_url($new_pdf_url, PHP_URL_SCHEME) === 'https') {
1478		- // Extract filename from URL
1479		- $pdf_filename = basename(parse_url($new_pdf_url, PHP_URL_PATH));
1480		-
1481		- // Clear previous PDF transients
1482		- $this->clear_pdf_transients($session_id);
1483		-
1484		- // Process new PDF using current_options
1485		- $max_pages = $current_options['pdf_max_pages'] ?? 69;
1486		- $embeddings = $this->fetch_and_split_pdf_pages($new_pdf_url, $max_pages);
1487		-
1488		- if ($embeddings === 'too_many_pages') {
1489		- $error_text = sprintf(
1490		- $current_options['pdf_intent_error_text'] ??
1491		- esc_html__("The provided PDF exceeds the maximum allowed limit of %d pages. Please provide a smaller document.", 'mxchat'),
1492		- $max_pages
1493		- );
1494		- $this->fallbackResponse['text'] = $error_text;
1495		- } elseif ($embeddings) {
1496		- // Store new PDF information
1497		- $pdf_filename = basename(parse_url($new_pdf_url, PHP_URL_PATH));
1498		-
1499		- // If the filename is generic, create a more descriptive one
1500		- if (in_array($pdf_filename, ['results_download.php', 'download.php', 'view.php', 'pdf.php']) ||
1501		- strpos($pdf_filename, '.php') !== false) {
1502		- $pdf_filename = 'Document_' . date('Y-m-d_H-i') . '.pdf';
1503		- }
1504		-
1505		- set_transient('mxchat_pdf_url_' . $session_id, $new_pdf_url, HOUR_IN_SECONDS);
1506		- set_transient('mxchat_pdf_filename_' . $session_id, $pdf_filename, HOUR_IN_SECONDS);
1507		- set_transient('mxchat_pdf_embeddings_' . $session_id, $embeddings, HOUR_IN_SECONDS);
1508		- set_transient('mxchat_include_pdf_in_context_' . $session_id, true, HOUR_IN_SECONDS);
1509		-
1510		- $success_text = $current_options['pdf_intent_success_text'] ??
1511		- esc_html__("I've processed the new PDF '{$pdf_filename}'. What questions do you have about it?", 'mxchat');
1512		-
1513		- $pdf_response = [
1514		- 'success' => true,
1515		- 'message' => $success_text,
1516		- 'data' => [
1517		- 'filename' => $pdf_filename
1518		- ]
1519		- ];
1520		-
1521		- if ($testing_data !== null) {
1522		- $pdf_response['testing_data'] = $testing_data;
1523		- }
1524		-
1525		- wp_send_json($pdf_response);
1526		- wp_die();
1527		- } else {
1528		- $error_text = $current_options['pdf_intent_error_text'] ??
1529		- esc_html__("Sorry, I couldn't process the PDF. Please ensure it's a valid file.", 'mxchat');
1530		- $this->fallbackResponse['text'] = $error_text;
1531		- }
1532		-
1533		- $pdf_error_response = [
1534		- 'success' => false,
1535		- 'message' => $this->fallbackResponse['text']
1536		- ];
1537		-
1538		- if ($testing_data !== null) {
1539		- $pdf_error_response['testing_data'] = $testing_data;
1540		- }
1541		-
1542		- wp_send_json($pdf_error_response);
1543		- wp_die();
1544		- }
1545		- }
1546		- }
1547		-
1548		-
1549		- // Step 2: Detect intent and handle intent-based responses
1550		- $intent_result = $this->mxchat_check_intent_and_invoke_callback($message, $user_id, $session_id);
1551		-
1552		- // Capture action analysis for testing panel after intent check
1553		- if ($testing_data !== null && isset($this->last_action_analysis) && !empty($this->last_action_analysis)) {
1554		- $testing_data['action_matches'] = $this->last_action_analysis;
1555		- }
1556		-
1557		- // Step 3: Handle the intent result appropriately
1558		- if ($intent_result !== false) {
1559		- // Intent was matched - ALWAYS send as JSON response, never streaming
1560		-
1561		- if (is_array($intent_result) && (isset($intent_result['text']) || isset($intent_result['html']))) {
1562		- // Intent returned a direct response array
1563		- $response_data = [
1564		- 'text' => $intent_result['text'] ?? '',
1565		- 'html' => $intent_result['html'] ?? '',
1566		- 'session_id' => $session_id
1567		- ];
1568		-
1569		- // IMPORTANT: Include chat_mode if present (for WhatsApp, Slack, etc.)
1570		- if (isset($intent_result['chat_mode'])) {
1571		- $response_data['chat_mode'] = $intent_result['chat_mode'];
1572		- }
1573		-
1574		- if ($testing_data !== null) {
1575		- $response_data['testing_data'] = $testing_data;
1576		- }
1577		-
1578		- wp_send_json($response_data);
1579		- wp_die();
1580		- } else if ($intent_result === true && (!empty($this->fallbackResponse['text']) || !empty($this->fallbackResponse['html']))) {
1581		- // Intent returned true and set fallbackResponse
1582		-
1583		- // SAVE TO TRANSCRIPT
1584		- if (!empty($this->fallbackResponse['text'])) {
1585		- $this->mxchat_save_chat_message($session_id, 'bot', $this->fallbackResponse['text']);
1586		- }
1587		- // Save action HTML (product cards, featured products, etc.) so it renders in transcripts
1588		- if (!empty($this->fallbackResponse['html'])) {
1589		- $this->mxchat_save_chat_message($session_id, 'bot', $this->fallbackResponse['html']);
1590		- }
1591		-
1592		- $response_data = [
1593		- 'text' => $this->fallbackResponse['text'] ?? '',
1594		- 'html' => $this->fallbackResponse['html'] ?? '',
1595		- 'session_id' => $session_id
1596		- ];
1597		-
1598		- if (isset($this->fallbackResponse['chat_mode'])) {
1599		- $response_data['chat_mode'] = $this->fallbackResponse['chat_mode'];
1600		- }
1601		-
1602		- if ($testing_data !== null) {
1603		- $response_data['testing_data'] = $testing_data;
1604		- }
1605		-
1606		- wp_send_json($response_data);
1607		- wp_die();
1608		- }
1609		- }
1610		-
1611		- // If we get here, no intent matched OR the intent didn't provide a usable response
1612		-
1613		- // Step 4: Generate AI response
1614		- // Get session start timestamp - when persistence is OFF, only include messages from this page load
1615		- $session_start_timestamp = isset($_POST['session_start_timestamp']) ? intval($_POST['session_start_timestamp']) : 0;
1616		- $conversation_history = $this->mxchat_fetch_conversation_history_for_ai($session_id, $session_start_timestamp);
1617		- $this->mxchat_increment_chat_count();
1618		-
1619		- // Generate embedding for the user's query - USE BOT-SPECIFIC API KEY
1620		- $api_key = $current_options['api_key'] ?? $this->options['api_key'];
1621		- $user_message_embedding = $this->mxchat_generate_embedding($message, $api_key);
1622		-
1623		- // Check if the embedding generation returned an error
1624		- if (is_array($user_message_embedding) && isset($user_message_embedding['error'])) {
1625		- $error_message = $user_message_embedding['error'];
1626		- $error_code = $user_message_embedding['error_code'] ?? 'embedding_error';
1627		-
1628		- // FIXED: Send error in appropriate format based on streaming mode
1629		- if ($is_streaming) {
1630		- echo "data: " . json_encode([
1631		- 'error' => true,
1632		- 'error_message' => $error_message,
1633		- 'error_code' => $error_code,
1634		- 'text' => $error_message,
1635		- 'message' => $error_message
1636		- ]) . "\n\n";
1637		- echo "data: [DONE]\n\n";
1638		- flush();
1639		- } else {
1640		- wp_send_json_error([
1641		- 'error_message' => $error_message,
1642		- 'error_code' => $error_code
1643		- ]);
1644		- }
1645		- wp_die();
1646		- }
1647		-
1648		- // Check if the embedding is valid
1649		- if (!is_array($user_message_embedding) || empty($user_message_embedding)) {
1650		- $error_message = esc_html__('Unable to process your message. The embedding service is not responding correctly.', 'mxchat');
1651		-
1652		- // FIXED: Send error in appropriate format based on streaming mode
1653		- if ($is_streaming) {
1654		- echo "data: " . json_encode([
1655		- 'error' => true,
1656		- 'error_message' => $error_message,
1657		- 'error_code' => 'invalid_embedding',
1658		- 'text' => $error_message,
1659		- 'message' => $error_message
1660		- ]) . "\n\n";
1661		- echo "data: [DONE]\n\n";
1662		- flush();
1663		- } else {
1664		- wp_send_json_error([
1665		- 'error_message' => $error_message,
1666		- 'error_code' => 'invalid_embedding'
1667		- ]);
1668		- }
1669		- wp_die();
1670		- }
1671		-
1672		- // Build context with both knowledge base and PDF content if available
1673		- $context_content = "User asked: '{$message}'\n\n";
1674		-
1675		- // Add action instruction if present (add this right after the above line)
1676		- if (!empty($this->current_action_instruction)) {
1677		- $context_content .= "===== SPECIAL INSTRUCTION =====\n";
1678		- $context_content .= "IMPORTANT: " . $this->current_action_instruction . "\n";
1679		- $context_content .= "Respond naturally and conversationally while following this instruction.\n";
1680		- $context_content .= "===== END SPECIAL INSTRUCTION =====\n\n";
1681		-
1682		- // Clear the instruction after using it
1683		- $this->current_action_instruction = null;
1684		- }
1685		-
1686		-
1687		- // Add page context if available and contextual awareness is enabled using current_options
1688		- if ($page_context && isset($current_options['contextual_awareness_toggle']) && $current_options['contextual_awareness_toggle'] === 'on') {
1689		- $context_content .= "===== CURRENT PAGE CONTEXT =====\n";
1690		- $context_content .= "Page URL: " . $page_context['url'] . "\n";
1691		- $context_content .= "Page Title: " . $page_context['title'] . "\n";
1692		- $context_content .= "Page Content: " . $page_context['content'] . "\n";
1693		- $context_content .= "===== END CURRENT PAGE CONTEXT =====\n\n";
1694		- }
1695		-
1696		- // Get relevant content from knowledge base - PASS BOT_ID and MESSAGE for Vector Store
1697		- $relevant_content = $this->mxchat_find_relevant_content($user_message_embedding, $bot_id, $message);
1698		-
1699		- // NEW: Also extract URLs from system instructions (only if citation links enabled)
1700		- // Use fresh options to ensure we get the latest setting value
1701		- $fresh_options = get_option('mxchat_options', []);
1702		- $citation_links_enabled = isset($fresh_options['citation_links_toggle']) ? ($fresh_options['citation_links_toggle'] === 'on') : true;
1703		-
1704		- $system_instructions = $this->get_system_instructions($bot_id, $session_id);
1705		- if ($citation_links_enabled && !empty($system_instructions)) {
1706		- preg_match_all(
1707		- '#\bhttps?://[^\s<>"\']+#i',
1708		- $system_instructions,
1709		- $system_instruction_urls
1710		- );
1711		-
1712		- if (!empty($system_instruction_urls[0])) {
1713		- // Merge with existing valid URLs
1714		- $this->current_valid_urls = array_merge(
1715		- $this->current_valid_urls,
1716		- $system_instruction_urls[0]
1717		- );
1718		- // Remove duplicates
1719		- $this->current_valid_urls = array_unique($this->current_valid_urls);
1720		-
1721		- //error_log("Added " . count($system_instruction_urls[0]) . " URLs from system instructions");
1722		- }
1723		- }
1724		-
1725		-// ===== CAPTURE REAL SIMILARITY DATA FOR ADMINS =====
1726		-if ($testing_data !== null && $this->last_similarity_analysis !== null) {
1727		- // Update testing data with the REAL similarity analysis
1728		- $testing_data['top_matches'] = $this->last_similarity_analysis['top_matches'];
1729		- $testing_data['total_documents_checked'] = $this->last_similarity_analysis['total_checked'] ?? 0;
1730		- $testing_data['knowledge_base_type'] = $this->last_similarity_analysis['knowledge_base_type'];
1731		- $testing_data['sources_used'] = $this->last_similarity_analysis['sources_used'] ?? 0;
1732		- $testing_data['total_chunks_used'] = $this->last_similarity_analysis['total_chunks_used'] ?? 0;
1733		-}
1734		-// ===== END SIMILARITY DATA CAPTURE =====
1735		-
1736		-// NEW: Add valid URLs to testing data for admin panel display (AFTER similarity data)
1737		-if ($testing_data !== null && !empty($this->current_valid_urls)) {
1738		- $testing_data['approved_urls'] = array_values($this->current_valid_urls);
1739		- //error_log("Added " . count($this->current_valid_urls) . " approved URLs to testing data");
1740		-}
1741		-
1742		- if (!empty($relevant_content)) {
1743		- $context_content .= "===== OFFICIAL KNOWLEDGE DATABASE CONTENT =====\n" . $relevant_content . "\n===== END OF OFFICIAL KNOWLEDGE DATABASE CONTENT =====\n\n";
1744		- } else {
1745		- $context_content .= "===== NO RELEVANT CONTENT FOUND IN KNOWLEDGE DATABASE =====\n";
1746		- }
1747		-
1748		- // NEW: Add approved URLs list to context for AI (only if citation links enabled)
1749		- if ($citation_links_enabled && !empty($this->current_valid_urls)) {
1750		- $context_content .= "===== APPROVED URLS FOR CITATIONS =====\n";
1751		- $context_content .= "You may ONLY use these exact URLs in your response:\n";
1752		- foreach ($this->current_valid_urls as $url) {
1753		- $context_content .= "- " . $url . "\n";
1754		- }
1755		- $context_content .= "\nCRITICAL: Do NOT create, modify, extend, or invent any other URLs. ";
1756		- $context_content .= "===== END APPROVED URLS =====\n\n";
1757		- }
1758		-
1759		- // Check for and include PDF content
1760		- $pdf_url = get_transient('mxchat_pdf_url_' . $session_id);
1761		- $pdf_embeddings = get_transient('mxchat_pdf_embeddings_' . $session_id);
1762		- $pdf_filename = get_transient('mxchat_pdf_filename_' . $session_id);
1763		- if ($pdf_url && $pdf_embeddings && get_transient('mxchat_include_pdf_in_context_' . $session_id)) {
1764		- $relevant_pdf_pages = $this->find_relevant_pdf_pages($user_message_embedding, $pdf_embeddings);
1765		- if (!empty($relevant_pdf_pages)) {
1766		- $context_content .= "Relevant content from PDF document '{$pdf_filename}':\n";
1767		- foreach ($relevant_pdf_pages as $page_data) {
1768		- $context_content .= "Page {$page_data['page_number']} of '{$pdf_filename}': {$page_data['text']}\n";
1769		- }
1770		- $context_content .= "\n";
1771		- }
1772		- }
1773		-
1774		- // Check for and include Word content
1775		- $word_url = get_transient('mxchat_word_url_' . $session_id);
1776		- $word_embeddings = get_transient('mxchat_word_embeddings_' . $session_id);
1777		- $word_filename = get_transient('mxchat_word_filename_' . $session_id);
1778		- if ($word_url && $word_embeddings && get_transient('mxchat_include_word_in_context_' . $session_id)) {
1779		- $relevant_word_chunks = $this->word_handler->mxchat_find_relevant_word_chunks($user_message_embedding, $word_embeddings);
1780		- if (!empty($relevant_word_chunks)) {
1781		- $context_content .= "Relevant content from Word document '{$word_filename}':\n";
1782		- foreach ($relevant_word_chunks as $chunk_data) {
1783		- $context_content .= "Section {$chunk_data['chunk_number']} of '{$word_filename}': {$chunk_data['text']}\n";
1784		- }
1785		- $context_content .= "\n";
1786		- }
1787		- }
1788		-
1789		- $context_content = apply_filters('mxchat_prepare_context', $context_content, $session_id);
1790		-
1791		- // Extract model from current options for bot-specific model support
1792		- $selected_model = isset($current_options['model']) ? $current_options['model'] : 'gpt-5.1-chat-latest';
1793		-
1794		- $response = $this->mxchat_generate_response(
1795		- $context_content,
1796		- $current_options['api_key'] ?? $this->options['api_key'],
1797		- $current_options['xai_api_key'] ?? $this->options['xai_api_key'],
1798		- $current_options['claude_api_key'] ?? $this->options['claude_api_key'],
1799		- $current_options['deepseek_api_key'] ?? $this->options['deepseek_api_key'],
1800		- $current_options['gemini_api_key'] ?? $this->options['gemini_api_key'],
1801		- $current_options['openrouter_api_key'] ?? $this->options['openrouter_api_key'],
1802		- $conversation_history,
1803		- $is_streaming,
1804		- $session_id,
1805		- $testing_data,
1806		- $selected_model
1807		- );
1808		-
1809		- // Handle streaming vs non-streaming responses
1810		- if ($is_streaming) {
1811		- // Check if streaming actually happened or if it fell back to regular response
1812		- if ($response === true) {
1813		- wp_die();
1814		- }
1815		- // If we get here, streaming fell back to regular response, continue
1816		- // But if there's an error, we need to send it as SSE format since headers are already set
1817		- if (is_array($response) && isset($response['error'])) {
1818		- $error_message = $response['error'];
1819		- $error_code = $response['error_code'] ?? 'api_error';
1820		- // Send error in SSE format that the client JS can handle
1821		- echo "data: " . json_encode([
1822		- 'error' => true,
1823		- 'error_message' => $error_message,
1824		- 'error_code' => $error_code,
1825		- 'text' => $error_message, // Also include as text for fallback handling
1826		- 'message' => $error_message
1827		- ]) . "\n\n";
1828		- echo "data: [DONE]\n\n";
1829		- flush();
1830		- wp_die();
1831		- }
1832		- }
1833		-
1834		- // Check if the response is an error array (non-streaming mode)
1835		- if (is_array($response) && isset($response['error'])) {
1836		- wp_send_json_error([
1837		- 'error_message' => $response['error'],
1838		- 'error_code' => $response['error_code'] ?? 'api_error'
1839		- ]);
1840		- wp_die();
1841		- }
1842		-
1843		- // DEBUG: Check what we have
1844		- //error_log("=== BEFORE URL VALIDATION ===");
1845		- //error_log("current_valid_urls is empty? " . (empty($this->current_valid_urls) ? 'YES' : 'NO'));
1846		- //error_log("current_valid_urls count: " . count($this->current_valid_urls));
1847		- //error_log("current_valid_urls content: " . print_r($this->current_valid_urls, true));
1848		-
1849		- // If we get here, the response is valid text - now validate URLs
1850		- if (!empty($this->current_valid_urls)) {
1851		- //error_log("CALLING validate_and_clean_urls");
1852		- $response = $this->validate_and_clean_urls($response, $this->current_valid_urls);
1853		- } else {
1854		- //error_log("SKIPPING validation - current_valid_urls is empty");
1855		- }
1856		- // ===== END URL VALIDATION =====
1857		-
1858		- // Prepare RAG context data for storage (only include documents used for context)
1859		- $rag_context_for_storage = null;
1860		- $has_rag_data = $this->last_similarity_analysis !== null && !empty($this->last_similarity_analysis['top_matches']);
1861		- $has_action_data = isset($this->last_action_analysis) && !empty($this->last_action_analysis);
1862		-
1863		- if ($has_rag_data || $has_action_data) {
1864		- $rag_context_for_storage = [];
1865		-
1866		- // Add RAG/source data if available
1867		- if ($has_rag_data) {
1868		- $rag_context_for_storage['top_matches'] = $this->last_similarity_analysis['top_matches'];
1869		- $rag_context_for_storage['approved_urls'] = $this->current_valid_urls ?? [];
1870		- $rag_context_for_storage['similarity_threshold'] = $this->last_similarity_analysis['threshold_used'] ?? 0.35;
1871		- $rag_context_for_storage['knowledge_base_type'] = $this->last_similarity_analysis['knowledge_base_type'] ?? 'WordPress Database';
1872		- $rag_context_for_storage['total_documents_checked'] = $this->last_similarity_analysis['total_checked'] ?? 0;
1873		- $rag_context_for_storage['sources_used'] = $this->last_similarity_analysis['sources_used'] ?? 0;
1874		- $rag_context_for_storage['total_chunks_used'] = $this->last_similarity_analysis['total_chunks_used'] ?? 0;
1875		- }
1876		-
1877		- // Add action analysis data if available
1878		- if ($has_action_data) {
1879		- $rag_context_for_storage['action_analysis'] = $this->last_action_analysis;
1880		- }
1881		- }
1882		-
1883		- // Save the cleaned response with RAG context
1884		- $this->mxchat_save_chat_message($session_id, 'bot', $response, null, $rag_context_for_storage);
1885		-
1886		- // Step 5: Save additional content if available
1887		- if (!empty($this->productCardHtml)) {
1888		- $this->mxchat_save_chat_message($session_id, 'bot', $this->productCardHtml);
1889		- }
1890		-
1891		- if (!empty($this->fallbackResponse['html'])) {
1892		- $this->mxchat_save_chat_message($session_id, 'bot', $this->fallbackResponse['html']);
1893		- }
1894		-
1895		- // Step 6: Return the response
1896		- // DEBUG: Check if newlines exist in the response
1897		- //error_log("=== MXCHAT NON-STREAMING RESPONSE DEBUG ===");
1898		- //error_log("Response has newlines: " . (strpos($response, "\n") !== false ? 'YES' : 'NO'));
1899		- //error_log("Response first 500 chars: " . substr($response, 0, 500));
1900		-
1901		- $response_data = [
1902		- 'text' => $response,
1903		- 'html' => !empty($this->productCardHtml) ? $this->productCardHtml : ($this->fallbackResponse['html'] ?? ''),
1904		- 'session_id' => $session_id
1905		- ];
1906		-
1907		- // Include vectorstore error info for admin debugging (only visible to admins via testing_data)
1908		- if (!empty($this->last_vectorstore_error) && $testing_data !== null) {
1909		- $testing_data['vectorstore_error'] = $this->last_vectorstore_error;
1910		- }
1911		-
1912		- // Also pass it as a top-level field so JS can show a better error message to admins
1913		- if (!empty($this->last_vectorstore_error) && current_user_can('manage_options')) {
1914		- $response_data['vectorstore_error'] = $this->last_vectorstore_error;
1915		- }
1916		-
1917		- // Always add testing data for admins (no toggle needed)
1918		- if ($testing_data !== null) {
1919		- $response_data['testing_data'] = $testing_data;
1920		- }
1921		-
1922		- wp_send_json($response_data);
1923		- wp_die();
1924		-}
1925		-
1926		-/**
1927		- * Get bot-specific options for multi-bot functionality
1928		- * Falls back to default options if bot_id is 'default' or multi-bot add-on is not active
1929		- */
1930		-// Also debug the bot options retrieval
1931		-private function get_bot_options($bot_id = 'default') {
1932		- //error_log("MXCHAT DEBUG: get_bot_options called for bot: " . $bot_id);
1933		-
1934		- if ($bot_id === 'default' || !class_exists('MxChat_Multi_Bot_Manager')) {
1935		- //error_log("MXCHAT DEBUG: Using default options (no multi-bot or bot is 'default')");
1936		- return array();
	180	+ set_transient($rate_limit_transient_key, $chat_count + 1, DAY_IN_SECONDS);
1937	181	}
1938		-
1939		- $bot_options = apply_filters('mxchat_get_bot_options', array(), $bot_id);
1940		-
1941		- if (!empty($bot_options)) {
1942		- //error_log("MXCHAT DEBUG: Got bot-specific options from filter");
1943		- if (isset($bot_options['similarity_threshold'])) {
1944		- //error_log(" - similarity_threshold: " . $bot_options['similarity_threshold']);
1945		- }
1946		- }
1947		-
1948		- return is_array($bot_options) ? $bot_options : array();
1949		-}
1950	182
1951		-/**
1952		- * Get bot-specific Pinecone configuration
1953		- * Used in the knowledge retrieval functions
1954		- */
1955		-// Also add debugging to your get_bot_pinecone_config function
1956		-private function get_bot_pinecone_config($bot_id = 'default') {
1957		- //error_log("MXCHAT DEBUG: get_bot_pinecone_config called for bot: " . $bot_id);
1958		-
1959		- // If default bot or multi-bot add-on not active, use default Pinecone config
1960		- if ($bot_id === 'default' || !class_exists('MxChat_Multi_Bot_Manager')) {
1961		- //error_log("MXCHAT DEBUG: Using default Pinecone config (no multi-bot or bot is 'default')");
1962		- $addon_options = get_option('mxchat_pinecone_addon_options', array());
1963		- $config = array(
1964		- 'use_pinecone' => (isset($addon_options['mxchat_use_pinecone']) && $addon_options['mxchat_use_pinecone'] === '1'),
1965		- 'api_key' => $addon_options['mxchat_pinecone_api_key'] ?? '',
1966		- 'host' => $addon_options['mxchat_pinecone_host'] ?? '',
1967		- 'namespace' => $addon_options['mxchat_pinecone_namespace'] ?? ''
1968		- );
1969		- //error_log("MXCHAT DEBUG: Default config - use_pinecone: " . ($config['use_pinecone'] ? 'true' : 'false'));
1970		- return $config;
1971		- }
1972		-
1973		- //error_log("MXCHAT DEBUG: Calling filter 'mxchat_get_bot_pinecone_config' for bot: " . $bot_id);
1974		-
1975		- // Hook for multi-bot add-on to provide bot-specific Pinecone config
1976		- $bot_pinecone_config = apply_filters('mxchat_get_bot_pinecone_config', array(), $bot_id);
1977		-
1978		- if (!empty($bot_pinecone_config)) {
1979		- //error_log("MXCHAT DEBUG: Got bot-specific config from filter");
1980		- //error_log(" - use_pinecone: " . (isset($bot_pinecone_config['use_pinecone']) ? ($bot_pinecone_config['use_pinecone'] ? 'true' : 'false') : 'not set'));
1981		- //error_log(" - host: " . ($bot_pinecone_config['host'] ?? 'not set'));
1982		- //error_log(" - namespace: " . ($bot_pinecone_config['namespace'] ?? 'not set'));
1983		- } else {
1984		- //error_log("MXCHAT DEBUG: Filter returned empty config!");
1985		- }
1986		-
1987		- return is_array($bot_pinecone_config) ? $bot_pinecone_config : array();
1988		-}
1989		-
1990		-
1991		-// Updated function to check intents and invoke the callback function
1992		-private function mxchat_check_intent_and_invoke_callback($message, $user_id, $session_id) {
1993		- global $wpdb;
1994		- $chat_mode = get_option("mxchat_mode_{$session_id}", 'ai');
1995		-
1996		- // Get the current bot_id
1997		- $current_bot_id = $this->get_current_bot_id($session_id);
1998		-
1999		- // Generate the user embedding
2000		- $user_embedding = $this->mxchat_generate_embedding($message, $this->options['api_key']);
2001		-
2002		- // Check if embedding generation returned an error
2003		- if (is_array($user_embedding) && isset($user_embedding['error'])) {
2004		- $error_message = $user_embedding['error'];
2005		- $error_code = $user_embedding['error_code'] ?? 'embedding_error';
2006		-
2007		- // FIXED: Send error in appropriate format based on streaming mode
2008		- if ($this->is_streaming) {
2009		- echo "data: " . json_encode([
2010		- 'error' => true,
2011		- 'error_message' => $error_message,
2012		- 'error_code' => $error_code,
2013		- 'text' => $error_message,
2014		- 'message' => $error_message
2015		- ]) . "\n\n";
2016		- echo "data: [DONE]\n\n";
2017		- flush();
2018		- } else {
2019		- wp_send_json_error([
2020		- 'error_message' => $error_message,
2021		- 'error_code' => $error_code
2022		- ]);
2023		- }
	183	+ // Validate and sanitize the incoming message
	184	+ if (!isset($_POST['message'])) {
	185	+ wp_send_json_error('No message received');
2024	186	wp_die();
2025	187	}
2026	188
2027		- // Check if embedding is valid
2028		- if (!is_array($user_embedding) || empty($user_embedding)) {
2029		- $error_message = esc_html__('Unable to process your message. The embedding service is not responding correctly.', 'mxchat');
2030		-
2031		- // FIXED: Send error in appropriate format based on streaming mode
2032		- if ($this->is_streaming) {
2033		- echo "data: " . json_encode([
2034		- 'error' => true,
2035		- 'error_message' => $error_message,
2036		- 'error_code' => 'invalid_embedding',
2037		- 'text' => $error_message,
2038		- 'message' => $error_message
2039		- ]) . "\n\n";
2040		- echo "data: [DONE]\n\n";
2041		- flush();
2042		- } else {
2043		- wp_send_json_error([
2044		- 'error_message' => $error_message,
2045		- 'error_code' => 'invalid_embedding'
2046		- ]);
2047		- }
	189	+ $message = sanitize_text_field($_POST['message']);
	190	+ if (empty($message)) {
	191	+ wp_send_json_error('Message is empty or invalid.');
2048	192	wp_die();
2049	193	}
2050	194
2051		- // Fetch intents from the database
2052		- $table_name = $wpdb->prefix . 'mxchat_intents';
2053		- if ($chat_mode === 'agent') {
2054		- $query = $wpdb->prepare(
2055		- "SELECT * FROM $table_name WHERE callback_function = %s AND (enabled = 1 OR enabled IS NULL)",
2056		- 'mxchat_handle_switch_to_chatbot_intent'
2057		- );
2058		- $intents = $wpdb->get_results($query);
2059		- } else {
2060		- $intents = $wpdb->get_results("SELECT * FROM $table_name WHERE enabled = 1 OR enabled IS NULL");
2061		- }
	195	+ // Initialize the variable with the original message
	196	+ $message_with_order_details = $message;
2062	197
2063		- if (empty($intents)) {
2064		- return false;
2065		- }
	198	+ // Check if the user asked about orders
	199	+ if (MxChat_WooCommerce::mxchat_is_order_related_query($message)) {
	200	+ $order_details = MxChat_WooCommerce::mxchat_fetch_user_orders_details();
2066	201
2067		- // Prefetch individual phrase vectors from wp_mxchat_intent_phrases (grouped by intent_id)
2068		- $phrases_table = $wpdb->prefix . 'mxchat_intent_phrases';
2069		- $phrases_by_intent = [];
2070		- if ($wpdb->get_var("SHOW TABLES LIKE '$phrases_table'") === $phrases_table) {
2071		- $all_phrases = $wpdb->get_results("SELECT intent_id, phrase, embedding_vector FROM $phrases_table");
2072		- foreach ($all_phrases as $p) {
2073		- $phrases_by_intent[$p->intent_id][] = $p;
2074		- }
2075		- }
2076		-
2077		- $highest_similarity = -INF;
2078		- $matched_intent = null;
2079		-
2080		- // Array to store action analysis for testing panel
2081		- $action_analysis = [];
2082		-
2083		- foreach ($intents as $intent) {
2084		- // Additional check for enabled state
2085		- $is_enabled = isset($intent->enabled) ? (bool)$intent->enabled : true;
2086		- if (!$is_enabled) {
2087		- continue;
2088		- }
2089		-
2090		- // Check if this action is enabled for the current bot
2091		- if (!$this->is_action_enabled_for_bot($intent, $current_bot_id)) {
2092		- continue;
2093		- }
2094		-
2095		- $best_similarity = -INF;
2096		- $matched_phrase_text = '';
2097		-
2098		- // Check legacy embedding vector (existing behavior)
2099		- $intent_embedding_serialized = $intent->embedding_vector;
2100		- $intent_embedding = $intent_embedding_serialized
2101		- ? unserialize($intent_embedding_serialized, ['allowed_classes' => false])
2102		- : null;
2103		-
2104		- if (is_array($intent_embedding) && !empty($intent_embedding)) {
2105		- $legacy_similarity = $this->mxchat_calculate_cosine_similarity($user_embedding, $intent_embedding);
2106		- if ($legacy_similarity > $best_similarity) {
2107		- $best_similarity = $legacy_similarity;
2108		- $matched_phrase_text = 'legacy';
	202	+ // If order details are available, append them to the user's message
	203	+ if (!empty($order_details)) {
	204	+ $message_with_order_details = $message . "\n\n" . $order_details;
2109	205	}
2110	206	}
2111	207
2112		- // Check individual phrase vectors
2113		- if (isset($phrases_by_intent[$intent->id])) {
2114		- foreach ($phrases_by_intent[$intent->id] as $phrase_row) {
2115		- $phrase_embedding = $phrase_row->embedding_vector
2116		- ? unserialize($phrase_row->embedding_vector, ['allowed_classes' => false])
2117		- : null;
2118		- if (!is_array($phrase_embedding)) {
2119		- continue;
2120		- }
2121		- $phrase_similarity = $this->mxchat_calculate_cosine_similarity($user_embedding, $phrase_embedding);
2122		- if ($phrase_similarity > $best_similarity) {
2123		- $best_similarity = $phrase_similarity;
2124		- $matched_phrase_text = $phrase_row->phrase;
2125		- }
2126		- }
2127		- }
2128	208
2129		- // Skip if no valid embedding was found at all
2130		- if ($best_similarity === -INF) {
2131		- continue;
2132		- }
	209	+ // Save the combined message to the database
	210	+ $this->mxchat_save_chat_message($session_id, 'user', $message_with_order_details);
2133	211
2134		- $similarity = $best_similarity;
2135		- $intent_threshold = isset($intent->similarity_threshold) ? $intent->similarity_threshold : 0.85;
2136		-
2137		- // Store action analysis data for testing panel
2138		- $action_analysis[] = [
2139		- 'intent_label' => $intent->intent_label,
2140		- 'callback_function' => $intent->callback_function,
2141		- 'similarity' => round($similarity, 4),
2142		- 'similarity_percentage' => round($similarity * 100, 2),
2143		- 'threshold' => $intent_threshold,
2144		- 'threshold_percentage' => round($intent_threshold * 100, 2),
2145		- 'above_threshold' => $similarity >= $intent_threshold,
2146		- 'matched_phrase' => $matched_phrase_text,
2147		- 'triggered' => false // Will be updated below if this intent is triggered
2148		- ];
2149		-
2150		- if ($similarity >= $intent_threshold && $similarity > $highest_similarity) {
2151		- $highest_similarity = $similarity;
2152		- $matched_intent = $intent;
2153		- }
2154		- }
2155		-
2156		- // Mark the triggered action if any
2157		- if ($matched_intent) {
2158		- foreach ($action_analysis as &$action) {
2159		- if ($action['intent_label'] === $matched_intent->intent_label) {
2160		- $action['triggered'] = true;
2161		- break;
2162		- }
2163		- }
2164		- }
2165		-
2166		- // Sort actions by similarity (highest first) and store for testing panel
2167		- usort($action_analysis, function($a, $b) {
2168		- return $b['similarity'] <=> $a['similarity'];
2169		- });
2170		-
2171		- // Store action analysis for testing panel capture
2172		- $this->last_action_analysis = $action_analysis;
2173		-
2174		- // Around line 715 in your mxchat_check_intent_and_invoke_callback function
2175		- if ($matched_intent) {
2176		- // If the callback is a method on this instance (core callback), call it directly
2177		- if (method_exists($this, $matched_intent->callback_function)) {
2178		- $callback_result = call_user_func(
2179		- [$this, $matched_intent->callback_function],
2180		- $message,
2181		- $user_id,
2182		- $session_id,
2183		- $matched_intent,
2184		- $user_context ?? null
2185		- );
2186		- } else {
2187		- // Otherwise, use apply_filters for add-on callbacks
2188		- $callback_result = apply_filters(
2189		- $matched_intent->callback_function,
2190		- false,
2191		- $message,
2192		- $user_id,
2193		- $session_id,
2194		- $matched_intent
2195		- );
2196		- }
2197		-
2198		- // Handle the callback result properly
2199		- if ($callback_result !== false) {
2200		- // If callback returned an array with chat_mode, use it directly
2201		- if (is_array($callback_result) && isset($callback_result['chat_mode'])) {
2202		- $this->fallbackResponse = $callback_result;
2203		- return $callback_result; // Return the full array
2204		- } else {
2205		- $this->fallbackResponse = $callback_result;
2206		- return true;
2207		- }
2208		- }
2209		- }
2210		-
2211		- return false;
2212		-}
2213		-
2214		-/**
2215		- * Check if an action is enabled for a specific bot
2216		- */
2217		-private function is_action_enabled_for_bot($intent, $bot_id) {
2218		- // If enabled_bots column doesn't exist or is null, assume it's enabled for all bots (backward compatibility)
2219		- if (!isset($intent->enabled_bots) || empty($intent->enabled_bots)) {
2220		- return true;
2221		- }
2222		-
2223		- $enabled_bots = json_decode($intent->enabled_bots, true);
2224		-
2225		- // If JSON decode fails or returns empty array, assume enabled for all (backward compatibility)
2226		- if (!is_array($enabled_bots) || empty($enabled_bots)) {
2227		- return true;
2228		- }
2229		-
2230		- // Admin testing tab uses bot_id "testing" — treat it as "default" so all
2231		- // default-bot actions are testable from the admin panel
2232		- if ($bot_id === 'testing') {
2233		- $bot_id = 'default';
2234		- }
2235		-
2236		- // Check if the current bot is in the enabled bots list
2237		- return in_array($bot_id, $enabled_bots);
2238		-}
2239		-
2240		-// Helper function to clear PDF and Word document related transients
2241		-private function clear_pdf_transients($session_id) {
2242		- // PDF transients
2243		- delete_transient('mxchat_pdf_url_' . $session_id);
2244		- delete_transient('mxchat_pdf_embeddings_' . $session_id);
2245		- delete_transient('mxchat_include_pdf_in_context_' . $session_id);
2246		- delete_transient('mxchat_waiting_for_pdf_url_' . $session_id);
2247		-
2248		- // Word document transients
2249		- delete_transient('mxchat_word_url_' . $session_id);
2250		- delete_transient('mxchat_word_filename_' . $session_id);
2251		- delete_transient('mxchat_word_embeddings_' . $session_id);
2252		- delete_transient('mxchat_include_word_in_context_' . $session_id);
2253		- delete_transient('mxchat_waiting_for_word_' . $session_id);
2254		-}
2255		-
2256		-
2257		-
2258		-//verified good
2259		-public function mxchat_handle_email_capture($message, $user_id, $session_id) {
2260		- // Get the user's original instruction/message
2261		- $user_instruction = esc_html($this->options['triggered_phrase_response'] ?? esc_html__("Please provide your email address.", 'mxchat'));
2262		-
2263		- // Set instruction for AI - just pass along what the user wanted to say
2264		- $this->current_action_instruction = $user_instruction;
2265		-
2266		- // Set the transient to track email capture flow
2267		- set_transient('mxchat_email_capture_' . $user_id, true, 5 * MINUTE_IN_SECONDS);
2268		-
2269		- // Return false to let the AI generate the response
2270		- return false;
2271		-}
2272		-
2273		-public function mxchat_generate_image($message, $user_id, $session_id) {
2274		- //error_log("Starting image generation for message: " . $message);
2275		-
2276		- // Prepare a prompt for OpenAI image generation
2277		- $prompt = esc_html__('Create an image of ', 'mxchat') . sanitize_text_field($message);
2278		-
2279		- // Use the existing OpenAI API key
2280		- $openai_api_key = sanitize_text_field($this->options['api_key']);
2281		-
2282		- // Call OpenAI GPT Image to generate an image
2283		- $image_response = $this->mxchat_generate_openai_image($prompt, $openai_api_key);
2284		-
2285		- // Check if the response contains an image URL
2286		- if (isset($image_response['imageUrl'])) {
2287		- $image_url = esc_url_raw($image_response['imageUrl']);
2288		-
2289		- // Construct the HTML with a CSS class instead of inline styles
2290		- $response_html = '<img src="' . esc_url($image_url) . '" alt="' . esc_attr__('Generated Image', 'mxchat') . '" class="mxchat-generated-image" />';
2291		- $response_text = esc_html__('Here is the image I generated:', 'mxchat');
2292		-
2293		- // Save the bot message with both text and HTML
2294		- $this->mxchat_save_chat_message($session_id, 'bot', $response_text);
2295		- $this->mxchat_save_chat_message($session_id, 'bot', $response_html);
2296		-
2297		- // Set the fallback response for the chat handler
2298		- $this->fallbackResponse = [
2299		- 'text' => $response_text,
2300		- 'html' => $response_html,
2301		- 'images' => [$image_url]
2302		- ];
2303		-
2304		- // For debugging/verification - Use json_encode to verify what's being set
2305		- //error_log("Image generation successful - fallbackResponse set: " . json_encode($this->fallbackResponse));
2306		-
2307		- // Return the response directly instead of relying on the property
2308		- return $this->fallbackResponse;
2309		- } else {
2310		- $response_text = esc_html__("I'm sorry, but I couldn't generate an image based on your request.", 'mxchat');
2311		-
2312		- // Save the error message
2313		- $this->mxchat_save_chat_message($session_id, 'bot', $response_text);
2314		-
2315		- // Set the fallback response for the chat handler
2316		- $this->fallbackResponse = [
2317		- 'text' => $response_text,
2318		- 'html' => '',
2319		- 'images' => []
2320		- ];
2321		-
2322		- //error_log("DALL-E image generation error: " . esc_html($image_response['error'] ?? 'Unknown error.'));
2323		- //error_log("Error fallbackResponse set: " . json_encode($this->fallbackResponse));
2324		-
2325		- // Return the response directly instead of relying on the property
2326		- return $this->fallbackResponse;
2327		- }
2328		-}
2329		-
2330		-public function mxchat_generate_gemini_image($message, $user_id, $session_id) {
2331		- $prompt = esc_html__('Create an image of ', 'mxchat') . sanitize_text_field($message);
2332		-
2333		- $gemini_api_key = sanitize_text_field($this->options['gemini_api_key'] ?? '');
2334		- if (empty($gemini_api_key)) {
2335		- $response_text = esc_html__("Gemini API key is not configured.", 'mxchat');
2336		- $this->mxchat_save_chat_message($session_id, 'bot', $response_text);
2337		- return ['text' => $response_text, 'html' => '', 'images' => []];
2338		- }
2339		-
2340		- $image_response = $this->mxchat_generate_imagen_image($prompt, $gemini_api_key);
2341		-
2342		- if (isset($image_response['imageUrl'])) {
2343		- $image_url = esc_url_raw($image_response['imageUrl']);
2344		-
2345		- $response_html = '<img src="' . esc_url($image_url) . '" alt="' . esc_attr__('Generated Image', 'mxchat') . '" class="mxchat-generated-image" />';
2346		- $response_text = esc_html__('Here is the image I generated:', 'mxchat');
2347		-
2348		- $this->mxchat_save_chat_message($session_id, 'bot', $response_text);
2349		- $this->mxchat_save_chat_message($session_id, 'bot', $response_html);
2350		-
2351		- $this->fallbackResponse = [
2352		- 'text' => $response_text,
2353		- 'html' => $response_html,
2354		- 'images' => [$image_url]
2355		- ];
2356		-
2357		- return $this->fallbackResponse;
2358		- } else {
2359		- $response_text = esc_html__("I'm sorry, but I couldn't generate an image based on your request.", 'mxchat');
2360		-
2361		- $this->mxchat_save_chat_message($session_id, 'bot', $response_text);
2362		-
2363		- $this->fallbackResponse = [
2364		- 'text' => $response_text,
2365		- 'html' => '',
2366		- 'images' => []
2367		- ];
2368		-
2369		- return $this->fallbackResponse;
2370		- }
2371		-}
2372		-
2373		-private function mxchat_save_generated_image($base64_data, $mime_type = 'image/png', $prefix = 'mxchat-generated') {
2374		- $extension = ($mime_type === 'image/jpeg') ? 'jpg' : 'png';
2375		- $filename = sanitize_file_name($prefix . '-' . wp_generate_uuid4() . '.' . $extension);
2376		- $decoded = base64_decode($base64_data);
2377		-
2378		- if ($decoded === false) {
2379		- return new \WP_Error('decode_failed', esc_html__('Failed to decode image data.', 'mxchat'));
2380		- }
2381		-
2382		- $upload = wp_upload_bits($filename, null, $decoded);
2383		-
2384		- if (!empty($upload['error'])) {
2385		- return new \WP_Error('upload_failed', $upload['error']);
2386		- }
2387		-
2388		- $attach_id = wp_insert_attachment([
2389		- 'post_mime_type' => $mime_type,
2390		- 'post_title' => $prefix,
2391		- 'post_content' => '',
2392		- 'post_status' => 'inherit',
2393		- ], $upload['file']);
2394		-
2395		- if (is_wp_error($attach_id)) {
2396		- return $attach_id;
2397		- }
2398		-
2399		- require_once ABSPATH . 'wp-admin/includes/image.php';
2400		- $metadata = wp_generate_attachment_metadata($attach_id, $upload['file']);
2401		- wp_update_attachment_metadata($attach_id, $metadata);
2402		-
2403		- return esc_url_raw(wp_get_attachment_url($attach_id));
2404		-}
2405		-
2406		-private function mxchat_generate_openai_image($prompt, $api_key, $model = 'gpt-image-1', $timeout = 60) {
2407		- $api_url = 'https://api.openai.com/v1/images/generations';
2408		- $body = json_encode([
2409		- 'prompt' => sanitize_text_field($prompt),
2410		- 'n' => 1,
2411		- 'size' => '1024x1024',
2412		- 'quality' => 'medium',
2413		- 'output_format' => 'png',
2414		- 'model' => sanitize_text_field($model),
2415		- ]);
2416		-
2417		- $args = [
2418		- 'body' => $body,
2419		- 'headers' => [
2420		- 'Content-Type' => 'application/json',
2421		- 'Authorization' => 'Bearer ' . sanitize_text_field($api_key),
2422		- ],
2423		- 'method' => 'POST',
2424		- 'timeout' => absint($timeout),
2425		- ];
2426		-
2427		- $response = wp_remote_post($api_url, $args);
2428		-
2429		- if (is_wp_error($response)) {
2430		- return ['error' => esc_html__('Error generating image: ', 'mxchat') . $response->get_error_message()];
2431		- }
2432		-
2433		- $response_body = json_decode(wp_remote_retrieve_body($response), true);
2434		-
2435		- $b64 = $response_body['data'][0]['b64_json'] ?? $response_body['data'][0]['b64'] ?? null;
2436		- if ($b64) {
2437		- $saved_url = $this->mxchat_save_generated_image($b64, 'image/png', 'mxchat-openai');
2438		- if (is_wp_error($saved_url)) {
2439		- return ['error' => $saved_url->get_error_message()];
2440		- }
2441		- return ['imageUrl' => $saved_url];
2442		- } else {
2443		- return ['error' => esc_html__('Failed to generate image.', 'mxchat')];
2444		- }
2445		-}
2446		-
2447		-private function mxchat_generate_imagen_image($prompt, $api_key, $timeout = 60) {
2448		- $api_url = 'https://generativelanguage.googleapis.com/v1beta/models/imagen-4.0-generate-001:predict';
2449		-
2450		- $body = json_encode([
2451		- 'instances' => [['prompt' => sanitize_text_field($prompt)]],
2452		- 'parameters' => [
2453		- 'sampleCount' => 1,
2454		- 'aspectRatio' => '1:1',
2455		- ],
2456		- ]);
2457		-
2458		- $args = [
2459		- 'body' => $body,
2460		- 'headers' => [
2461		- 'Content-Type' => 'application/json',
2462		- 'x-goog-api-key' => sanitize_text_field($api_key),
2463		- ],
2464		- 'method' => 'POST',
2465		- 'timeout' => absint($timeout),
2466		- ];
2467		-
2468		- $response = wp_remote_post($api_url, $args);
2469		-
2470		- if (is_wp_error($response)) {
2471		- return ['error' => esc_html__('Error generating image: ', 'mxchat') . $response->get_error_message()];
2472		- }
2473		-
2474		- $response_body = json_decode(wp_remote_retrieve_body($response), true);
2475		-
2476		- $b64 = $response_body['predictions'][0]['bytesBase64Encoded'] ?? $response_body['predictions'][0]['imageBytes'] ?? null;
2477		- if ($b64) {
2478		- $mime = $response_body['predictions'][0]['mimeType'] ?? 'image/png';
2479		- $saved_url = $this->mxchat_save_generated_image($b64, $mime, 'mxchat-gemini');
2480		- if (is_wp_error($saved_url)) {
2481		- return ['error' => $saved_url->get_error_message()];
2482		- }
2483		- return ['imageUrl' => $saved_url];
2484		- } else {
2485		- return ['error' => esc_html__('Failed to generate image.', 'mxchat')];
2486		- }
2487		-}
2488		-
2489		-/**
2490		- * Handle web search requests.
2491		- *
2492		- * Sends the refined search query to the Brave Search API and uses the
2493		- * results to generate a conversational response with the AI model.
2494		- *
2495		- * @since 1.0.0
2496		- * @param string $message The user's search query.
2497		- * @param string $user_id The user identifier.
2498		- * @param string $session_id The current session ID.
2499		- * @return array Response array containing text with embedded HTML links
2500		- */
2501		-public function mxchat_handle_search_request($message, $user_id, $session_id) {
2502		- // Step 1: Interpret and refine the search query
2503		- $refined_search_query = $this->mxchat_interpret_search_query($message);
2504		- if (empty($refined_search_query)) {
2505		- return array(
2506		- 'text' => esc_html__('I apologize, but could you please rephrase your search request?', 'mxchat'),
2507		- 'html' => ''
2508		- );
2509		- }
2510		-
2511		- // Retrieve and validate API settings
2512		- $options = get_option('mxchat_options');
2513		- $api_key = isset($options['brave_api_key']) ? sanitize_text_field($options['brave_api_key']) : '';
2514		- $results_count = isset($options['brave_results_count']) ? absint($options['brave_results_count']) : 5;
2515		-
2516		- if (empty($api_key)) {
2517		- return array(
2518		- 'text' => esc_html__('Search functionality is temporarily unavailable. Please try again later.', 'mxchat'),
2519		- 'html' => ''
2520		- );
2521		- }
2522		-
2523		- // Build the API request URL
2524		- $api_url = add_query_arg(
2525		- array(
2526		- 'q' => rawurlencode($refined_search_query),
2527		- 'count' => $results_count,
2528		- 'text_decorations' => 'true',
2529		- 'rich_data' => 'true',
2530		- ),
2531		- 'https://api.search.brave.com/res/v1/web/search'
2532		- );
2533		-
2534		- // Attempt to retrieve cached results first
2535		- $transient_key = 'mxchat_search_' . md5($refined_search_query);
2536		- $results = get_transient($transient_key);
2537		-
2538		- if (false === $results) {
2539		- // SECURITY FIX: Changed to wp_safe_remote_get
2540		- $response = wp_safe_remote_get(
2541		- $api_url,
2542		- array(
2543		- 'headers' => array(
2544		- 'Accept' => 'application/json',
2545		- 'Accept-Encoding' => 'gzip',
2546		- 'X-Subscription-Token'=> $api_key,
2547		- ),
2548		- 'timeout' => 10,
2549		- )
2550		- );
2551		-
2552		- if (is_wp_error($response)) {
2553		- return array(
2554		- 'text' => esc_html__('I encountered an error while searching. Please try again.', 'mxchat'),
2555		- 'html' => ''
2556		- );
2557		- }
2558		-
2559		- $results = json_decode(wp_remote_retrieve_body($response), true);
2560		-
2561		- if (json_last_error() !== JSON_ERROR_NONE) {
2562		- return array(
2563		- 'text' => esc_html__('I received an invalid response from the search service.', 'mxchat'),
2564		- 'html' => ''
2565		- );
2566		- }
2567		-
2568		- // Cache results for one hour
2569		- set_transient($transient_key, $results, HOUR_IN_SECONDS);
2570		- }
2571		-
2572		- // Process results
2573		- if (!empty($results['web']['results']) && is_array($results['web']['results'])) {
2574		- // Create a more straightforward summary with HTML links
2575		- $search_results_text = '';
2576		-
2577		- // Add a simple intro
2578		- $search_results_text .= sprintf(
2579		- esc_html__("Here's what I found about '%s':", 'mxchat'),
2580		- esc_html($refined_search_query)
2581		- );
2582		-
2583		- // Add the top results with HTML links
2584		- foreach (array_slice($results['web']['results'], 0, 5) as $result) {
2585		- $title = isset($result['title']) ? wp_strip_all_tags($result['title']) : '';
2586		- $url = isset($result['url']) ? esc_url($result['url']) : '';
2587		- $description = isset($result['description']) ? wp_strip_all_tags($result['description']) : '';
2588		-
2589		- // Add a line break after the intro
2590		- $search_results_text .= '<br><br>';
2591		-
2592		- // Add title as a link
2593		- $search_results_text .= sprintf(
2594		- '<a href="%s" target="_blank" rel="noopener noreferrer">%s</a><br>',
2595		- $url,
2596		- $title
2597		- );
2598		-
2599		- // Add a condensed description
2600		- $search_results_text .= sprintf("%s", $description);
2601		- }
2602		-
2603		- // Save to chat history
2604		- $this->mxchat_save_chat_message($session_id, 'bot', $search_results_text);
2605		-
2606		- // Return the formatted text with embedded HTML links
2607		- return array(
2608		- 'text' => $search_results_text,
2609		- 'html' => ''
2610		- );
2611		- } else {
2612		- return array(
2613		- 'text' => sprintf(
2614		- esc_html__('I searched for "%s" but couldn\'t find any relevant results. Would you like to try different search terms?', 'mxchat'),
2615		- esc_html($refined_search_query)
2616		- ),
2617		- 'html' => ''
2618		- );
2619		- }
2620		-}
2621		-
2622		-//very good
2623		-/**
2624		- * Handle image search requests from the chatbot
2625		- *
2626		- * @param string $message The user's search query
2627		- * @param int $user_id The user's ID
2628		- * @param string $session_id The chat session ID
2629		- * @return array Response array with text and HTML content
2630		- */
2631		-public function mxchat_handle_image_search_request($message, $user_id, $session_id) {
2632		- // Step 1: Interpret the search query using the user's selected AI model
2633		- $refined_search_query = $this->mxchat_interpret_search_query($message);
2634		-
2635		- // If no query was interpreted, return a fallback message
2636		- if (empty($refined_search_query)) {
2637		- return array(
2638		- 'text' => __("I'm sorry, I couldn't interpret your search query. Please specify what you'd like to see images of.", 'mxchat'),
2639		- 'html' => "",
2640		- );
2641		- }
2642		-
2643		- // Brave API URL
2644		- $api_url = 'https://api.search.brave.com/res/v1/images/search';
2645		-
2646		- // Retrieve Brave API settings
2647		- $options = get_option('mxchat_options');
2648		- $api_key = isset($options['brave_api_key']) ? sanitize_text_field($options['brave_api_key']) : '';
2649		-
2650		- if (empty($api_key)) {
2651		- return array(
2652		- 'text' => __("API key is not configured. Please set it in the Brave Search Settings.", 'mxchat'),
2653		- 'html' => "",
2654		- );
2655		- }
2656		-
2657		- $image_count = isset($options['brave_image_count']) ? intval($options['brave_image_count']) : 4;
2658		- $safe_search = isset($options['brave_safe_search']) ? sanitize_text_field($options['brave_safe_search']) : 'strict';
2659		-
2660		- // Append query parameters based on settings
2661		- $api_url = add_query_arg([
2662		- 'q' => rawurlencode($refined_search_query),
2663		- 'count' => $image_count,
2664		- 'safesearch' => $safe_search,
2665		- ], $api_url);
2666		-
2667		- // Implement caching
2668		- $transient_key = 'mxchat_image_search_' . md5($refined_search_query);
2669		- $body = get_transient($transient_key);
2670		-
2671		- if (false === $body) {
2672		- $args = [
2673		- 'headers' => [
2674		- 'Accept' => 'application/json',
2675		- 'Accept-Encoding' => 'gzip',
2676		- 'X-Subscription-Token' => $api_key,
2677		- ],
2678		- 'timeout' => 10,
2679		- ];
2680		-
2681		- // SECURITY FIX: Changed to wp_safe_remote_get
2682		- $response = wp_safe_remote_get($api_url, $args);
2683		-
2684		- if (is_wp_error($response)) {
2685		- return array(
2686		- 'text' => __("I'm sorry, I couldn't retrieve any images based on your request.", 'mxchat'),
2687		- 'html' => "",
2688		- );
2689		- }
2690		-
2691		- $body = json_decode(wp_remote_retrieve_body($response), true);
2692		- set_transient($transient_key, $body, HOUR_IN_SECONDS);
2693		- }
2694		-
2695		- // Process the API response
2696		- if (isset($body['results']) && is_array($body['results']) && count($body['results']) > 0) {
2697		- $html_output = '<div class="mxchat-image-gallery">';
2698		-
2699		- // Get the configured image count (1-6)
2700		- $display_count = isset($options['brave_image_count']) ? intval($options['brave_image_count']) : 4;
2701		- $display_count = min($display_count, count($body['results'])); // Make sure we don't exceed available images
2702		-
2703		- // Use only the requested number of images
2704		- for ($i = 0; $i < $display_count; $i++) {
2705		- $image = $body['results'][$i];
2706		- $image_url = isset($image['url']) ? esc_url($image['url']) : '';
2707		- $thumbnail_url = isset($image['thumbnail']['src']) ? esc_url($image['thumbnail']['src']) : '';
2708		- $title = isset($image['title']) ? esc_html($image['title']) : esc_html__('Image', 'mxchat');
2709		-
2710		- if ($image_url && $thumbnail_url) {
2711		- $html_output .= '<div class="mxchat-image-item">';
2712		- $html_output .= '<strong class="mxchat-image-title">' . $title . '</strong>';
2713		- $html_output .= '<a href="' . $image_url . '" target="_blank" rel="noopener noreferrer" class="mxchat-image-link">';
2714		- $html_output .= '<img src="' . $thumbnail_url . '" alt="' . $title . '" class="mxchat-image-thumbnail">';
2715		- $html_output .= '</a></div>';
2716		- }
2717		- }
2718		-
2719		- $html_output .= '</div>';
2720		-
2721		- // Create response text
2722		- $response_text = sprintf(__("Here are some images of %s:", 'mxchat'), $refined_search_query);
2723		-
2724		- // Save both response text and HTML to chat history
2725		- $this->mxchat_save_chat_message($session_id, 'bot', $response_text);
2726		- $this->mxchat_save_chat_message($session_id, 'bot', $html_output);
2727		-
2728		- // Return the combined response
2729		- return array(
2730		- 'text' => $response_text,
2731		- 'html' => $html_output,
2732		- );
2733		- } else {
2734		- $response_text = __("I'm sorry, I couldn't retrieve any images based on your request.", 'mxchat');
2735		-
2736		- // Save the error message to chat history
2737		- $this->mxchat_save_chat_message($session_id, 'bot', $response_text);
2738		-
2739		- return array(
2740		- 'text' => $response_text,
2741		- 'html' => "",
2742		- );
2743		- }
2744		-}
2745		-
2746		-/**
2747		- * Interpret the search query using the user's selected AI model
2748		- *
2749		- * @param string $user_query The original query from the user
2750		- * @return string The refined search query
2751		- */
2752		-public function mxchat_interpret_search_query($user_query) {
2753		- $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');
2754		-
2755		- // Get options and determine the selected model
2756		- $options = $this->options ?? get_option('mxchat_options');
2757		- $selected_model = isset($options['model']) ? $options['model'] : 'gpt-5.1-chat-latest';
2758		-
2759		- // Extract model prefix to determine the provider
2760		- $model_parts = explode('-', $selected_model);
2761		- $provider = strtolower($model_parts[0]);
2762		-
2763		- // Determine which API key to use based on the provider
2764		- switch ($provider) {
2765		- case 'gemini':
2766		- $api_key = isset($options['gemini_api_key']) ? sanitize_text_field($options['gemini_api_key']) : '';
2767		- if (empty($api_key)) {
2768		- return sanitize_text_field($user_query); // Default to original query if API key missing
2769		- }
2770		- return $this->interpret_query_with_gemini($user_query, $system_prompt, $api_key, $selected_model);
2771		-
2772		- case 'claude':
2773		- $api_key = isset($options['claude_api_key']) ? sanitize_text_field($options['claude_api_key']) : '';
2774		- if (empty($api_key)) {
2775		- return sanitize_text_field($user_query);
2776		- }
2777		- return $this->interpret_query_with_claude($user_query, $system_prompt, $api_key, $selected_model);
2778		-
2779		- case 'grok':
2780		- $api_key = isset($options['xai_api_key']) ? sanitize_text_field($options['xai_api_key']) : '';
2781		- if (empty($api_key)) {
2782		- return sanitize_text_field($user_query);
2783		- }
2784		- return $this->interpret_query_with_xai($user_query, $system_prompt, $api_key, $selected_model);
2785		-
2786		- case 'deepseek':
2787		- $api_key = isset($options['deepseek_api_key']) ? sanitize_text_field($options['deepseek_api_key']) : '';
2788		- if (empty($api_key)) {
2789		- return sanitize_text_field($user_query);
2790		- }
2791		- return $this->interpret_query_with_deepseek($user_query, $system_prompt, $api_key, $selected_model);
2792		-
2793		- case 'gpt':
2794		- default:
2795		- // Default to OpenAI for custom models or unrecognized prefixes
2796		- $api_key = isset($options['api_key']) ? sanitize_text_field($options['api_key']) : '';
2797		- if (empty($api_key)) {
2798		- return sanitize_text_field($user_query);
2799		- }
2800		- return $this->interpret_query_with_openai($user_query, $system_prompt, $api_key, $selected_model);
2801		- }
2802		-}
2803		-
2804		-/**
2805		- * Interpret query using OpenAI models
2806		- */
2807		-private function interpret_query_with_openai($user_query, $system_prompt, $api_key, $model = 'gpt-5.1-chat-latest') {
2808		- $url = 'https://api.openai.com/v1/chat/completions';
2809		- $args = [
2810		- 'headers' => [
2811		- 'Authorization' => 'Bearer ' . $api_key,
2812		- 'Content-Type' => 'application/json',
2813		- ],
2814		- 'body' => wp_json_encode([
2815		- 'model' => $model,
2816		- 'messages' => [
2817		- ['role' => 'system', 'content' => $system_prompt],
2818		- ['role' => 'user', 'content' => sanitize_text_field($user_query)],
2819		- ],
2820		- 'temperature' => 0.2,
2821		- 'max_tokens' => 20,
2822		- ]),
2823		- 'method' => 'POST',
2824		- 'timeout' => 15,
2825		- ];
2826		-
2827		- $response = wp_remote_post($url, $args);
2828		- if (is_wp_error($response)) {
2829		- return sanitize_text_field($user_query);
2830		- }
2831		-
2832		- $body = json_decode(wp_remote_retrieve_body($response), true);
2833		- return isset($body['choices'][0]['message']['content'])
2834		- ? sanitize_text_field(trim($body['choices'][0]['message']['content']))
2835		- : sanitize_text_field($user_query);
2836		-}
2837		-
2838		-/**
2839		- * Interpret query using Claude models
2840		- */
2841		-private function interpret_query_with_claude($user_query, $system_prompt, $api_key, $model) {
2842		- $url = 'https://api.anthropic.com/v1/messages';
2843		-
2844		- $args = [
2845		- 'headers' => [
2846		- 'Content-Type' => 'application/json',
2847		- 'x-api-key' => $api_key,
2848		- 'anthropic-version' => '2023-06-01',
2849		- ],
2850		- 'body' => wp_json_encode([
2851		- 'model' => $model,
2852		- 'system' => $system_prompt,
2853		- 'messages' => [
2854		- ['role' => 'user', 'content' => sanitize_text_field($user_query)]
2855		- ],
2856		- 'max_tokens' => 20,
2857		- 'temperature' => 0.2,
2858		- ]),
2859		- 'method' => 'POST',
2860		- 'timeout' => 15,
2861		- ];
2862		-
2863		- $response = wp_remote_post($url, $args);
2864		- if (is_wp_error($response)) {
2865		- return sanitize_text_field($user_query);
2866		- }
2867		-
2868		- $body = json_decode(wp_remote_retrieve_body($response), true);
2869		- if (!empty($body['content'][0]['text'])) {
2870		- return sanitize_text_field(trim($body['content'][0]['text']));
2871		- }
2872		-
2873		- return sanitize_text_field($user_query);
2874		-}
2875		-
2876		-/**
2877		- * Interpret query using Gemini models
2878		- */
2879		-private function interpret_query_with_gemini($user_query, $system_prompt, $api_key, $model) {
2880		- // Use v1beta for preview models, v1 for stable models
2881		- $api_version = (strpos($model, 'preview') !== false || strpos($model, 'exp') !== false) ? 'v1beta' : 'v1';
2882		-
2883		- $url = "https://generativelanguage.googleapis.com/{$api_version}/models/{$model}:generateContent?key=" . urlencode($api_key);
2884		-
2885		- $args = [
2886		- 'headers' => [
2887		- 'Content-Type' => 'application/json',
2888		- ],
2889		- 'body' => wp_json_encode([
2890		- 'contents' => [
2891		- [
2892		- 'role' => 'user',
2893		- 'parts' => [
2894		- ['text' => $system_prompt . "\n\nQuery: " . sanitize_text_field($user_query)]
2895		- ]
2896		- ]
2897		- ],
2898		- 'generationConfig' => [
2899		- 'temperature' => 0.2,
2900		- 'maxOutputTokens' => 20,
2901		- ],
2902		- ]),
2903		- 'method' => 'POST',
2904		- 'timeout' => 15,
2905		- ];
2906		-
2907		- $response = wp_remote_post($url, $args);
2908		- if (is_wp_error($response)) {
2909		- return sanitize_text_field($user_query);
2910		- }
2911		-
2912		- $body = json_decode(wp_remote_retrieve_body($response), true);
2913		- if (!empty($body['candidates'][0]['content']['parts'][0]['text'])) {
2914		- return sanitize_text_field(trim($body['candidates'][0]['content']['parts'][0]['text']));
2915		- }
2916		-
2917		- return sanitize_text_field($user_query);
2918		-}
2919		-
2920		-/**
2921		- * Interpret query using X.AI (Grok) models
2922		- */
2923		-private function interpret_query_with_xai($user_query, $system_prompt, $api_key, $model) {
2924		- $url = 'https://api.xai.com/v1/chat/completions';
2925		-
2926		- $args = [
2927		- 'headers' => [
2928		- 'Content-Type' => 'application/json',
2929		- 'Authorization' => 'Bearer ' . $api_key,
2930		- ],
2931		- 'body' => wp_json_encode([
2932		- 'model' => $model,
2933		- 'messages' => [
2934		- ['role' => 'system', 'content' => $system_prompt],
2935		- ['role' => 'user', 'content' => sanitize_text_field($user_query)],
2936		- ],
2937		- 'temperature' => 0.2,
2938		- 'max_tokens' => 20,
2939		- ]),
2940		- 'method' => 'POST',
2941		- 'timeout' => 15,
2942		- ];
2943		-
2944		- $response = wp_remote_post($url, $args);
2945		- if (is_wp_error($response)) {
2946		- return sanitize_text_field($user_query);
2947		- }
2948		-
2949		- $body = json_decode(wp_remote_retrieve_body($response), true);
2950		- if (isset($body['choices'][0]['message']['content'])) {
2951		- return sanitize_text_field(trim($body['choices'][0]['message']['content']));
2952		- }
2953		-
2954		- return sanitize_text_field($user_query);
2955		-}
2956		-
2957		-/**
2958		- * Interpret query using DeepSeek models
2959		- */
2960		-private function interpret_query_with_deepseek($user_query, $system_prompt, $api_key, $model) {
2961		- $url = 'https://api.deepseek.com/v1/chat/completions';
2962		-
2963		- $args = [
2964		- 'headers' => [
2965		- 'Content-Type' => 'application/json',
2966		- 'Authorization' => 'Bearer ' . $api_key,
2967		- ],
2968		- 'body' => wp_json_encode([
2969		- 'model' => $model,
2970		- 'messages' => [
2971		- ['role' => 'system', 'content' => $system_prompt],
2972		- ['role' => 'user', 'content' => sanitize_text_field($user_query)],
2973		- ],
2974		- 'temperature' => 0.2,
2975		- 'max_tokens' => 20,
2976		- ]),
2977		- 'method' => 'POST',
2978		- 'timeout' => 15,
2979		- ];
2980		-
2981		- $response = wp_remote_post($url, $args);
2982		- if (is_wp_error($response)) {
2983		- return sanitize_text_field($user_query);
2984		- }
2985		-
2986		- $body = json_decode(wp_remote_retrieve_body($response), true);
2987		- if (isset($body['choices'][0]['message']['content'])) {
2988		- return sanitize_text_field(trim($body['choices'][0]['message']['content']));
2989		- }
2990		-
2991		- return sanitize_text_field($user_query);
2992		-}
2993		-
2994		-//very good
2995		-private function add_email_to_loops($email) {
2996		- // Sanitize the email
2997		- $email = sanitize_email($email);
2998		-
2999		- // Retrieve and sanitize options
3000		- $api_key = isset($this->options['loops_api_key']) ? sanitize_text_field($this->options['loops_api_key']) : '';
3001		- $mailing_list_id = isset($this->options['loops_mailing_list']) ? sanitize_text_field($this->options['loops_mailing_list']) : '';
3002		-
3003		- // Check for missing API key or mailing list ID
3004		- if (empty($api_key) || empty($mailing_list_id)) {
3005		- //error_log(esc_html__('Loops API key or mailing list ID is missing.', 'mxchat'));
3006		- return;
3007		- }
3008		-
3009		- $data = array(
3010		- 'email' => $email,
3011		- 'subscribed' => true,
3012		- 'source' => __('MxChat AI Chatbot', 'mxchat'),
3013		- 'mailingLists' => array($mailing_list_id => true),
3014		- );
3015		-
3016		- $url = 'https://app.loops.so/api/v1/contacts/create';
3017		- $args = array(
3018		- 'body' => wp_json_encode($data),
3019		- 'headers' => array(
3020		- 'Authorization' => 'Bearer ' . $api_key,
3021		- 'Content-Type' => 'application/json',
3022		- ),
3023		- 'method' => 'POST',
3024		- 'timeout' => 45,
3025		- );
3026		-
3027		- $response = wp_remote_post($url, $args);
3028		-
3029		- // Handle errors in the API request
3030		- if (is_wp_error($response)) {
3031		- //error_log(esc_html__('Error adding email to Loops: ', 'mxchat') . $response->get_error_message());
3032		- return;
3033		- }
3034		-
3035		- // Check for non-200 HTTP responses
3036		- $response_code = wp_remote_retrieve_response_code($response);
3037		- if ($response_code != 200) {
3038		- $response_body = wp_remote_retrieve_body($response);
3039		- //error_log(esc_html__('Loops API responded with code ', 'mxchat') . $response_code . ': ' . $response_body);
3040		- }
3041		-}
3042		-
3043		-public function mxchat_handle_pdf_discussion($message, $user_id, $session_id) {
3044		- // Get the maximum number of pages allowed from admin settings
3045		- $max_pages = isset($this->options['pdf_max_pages']) ? intval($this->options['pdf_max_pages']) : 69;
3046		-
3047		- // Retrieve options for dynamic texts
3048		- $trigger_text = $this->options['pdf_intent_trigger_text'] ?? __("Please provide the URL to the PDF you'd like to discuss.", 'mxchat');
3049		- $success_text = $this->options['pdf_intent_success_text'] ?? __("I've processed the PDF. What questions do you have about it?", 'mxchat');
3050		- $error_text = $this->options['pdf_intent_error_text'] ?? __("Sorry, I couldn't process the PDF. Please ensure it's a valid file.", 'mxchat');
3051		-
3052		- // Check for explicit request for new PDF
3053		- $new_pdf_requested = stripos($message, 'new') !== false ||
3054		- stripos($message, 'another') !== false ||
3055		- stripos($message, 'different') !== false;
3056		-
3057		- // If user mentions adding/reading a PDF, set waiting flag
3058		- if (stripos($message, 'pdf') !== false ||
3059		- stripos($message, 'document') !== false ||
3060		- stripos($message, 'read') !== false) {
3061		- set_transient('mxchat_waiting_for_pdf_url_' . $session_id, true, HOUR_IN_SECONDS);
3062		- $this->fallbackResponse['text'] = $trigger_text;
3063		- return;
3064		- }
3065		-
3066		- // If we're waiting for a URL or user requested new PDF
3067		- if ($new_pdf_requested || get_transient('mxchat_waiting_for_pdf_url_' . $session_id)) {
3068		- if (preg_match('/https?:\/\/[^\s"]+/i', $message, $matches)) {
3069		- // Process URL... (rest of your existing URL processing code)
3070		- } else {
3071		- $this->fallbackResponse['text'] = $trigger_text;
3072		- }
3073		- return;
3074		- }
3075		-
3076		- // Default to proceeding with conversation if no specific PDF action is needed
3077		- $this->fallbackResponse['text'] = '';
3078		-}
3079		-
3080		-
3081		-/**
3082		- * Enhanced fetch_and_split_pdf_pages with SSRF protection
3083		- */
3084		-private function fetch_and_split_pdf_pages($pdf_source, $max_pages) {
3085		- // CLEAR DEBUG LOGGING
3086		- //error_log("=== MXCHAT PDF PROCESSING START ===");
3087		- //error_log("PDF Source: " . $pdf_source);
3088		- //error_log("Max Pages: " . $max_pages);
3089		- //error_log("Session ID: " . ($this->session_id ?? 'not set'));
3090		-
3091		- // Check if Advanced Claude Toolbar is available and enabled
3092		- $claude_available = function_exists('mxchatACT_is_advanced_claude_enabled');
3093		- $claude_enabled = $claude_available ? mxchatACT_is_advanced_claude_enabled() : false;
3094		-
3095		- //error_log("Claude Function Available: " . ($claude_available ? 'YES' : 'NO'));
3096		- //error_log("Claude Enabled: " . ($claude_enabled ? 'YES' : 'NO'));
3097		-
3098		- if ($claude_available && $claude_enabled) {
3099		- //error_log("🚀 ATTEMPTING CLAUDE PROCESSING...");
3100		-
3101		- // Attempt Claude processing first
3102		- $claude_result = apply_filters('mxchat_process_pdf_advanced', false, $pdf_source, $max_pages, $this->session_id);
3103		-
3104		- if ($claude_result !== false && is_array($claude_result) && !empty($claude_result)) {
3105		- //error_log("✅ CLAUDE PROCESSING SUCCESSFUL!");
3106		- //error_log("Claude returned " . count($claude_result) . " processed pages");
3107		-
3108		- // Log first page details for verification
3109		- if (isset($claude_result[0])) {
3110		- $first_page = $claude_result[0];
3111		- //error_log("First page enhanced: " . (isset($first_page['enhanced']) && $first_page['enhanced'] ? 'YES' : 'NO'));
3112		- //error_log("Processing method: " . ($first_page['processing_method'] ?? 'not set'));
3113		- //error_log("First page text preview: " . substr($first_page['text'] ?? '', 0, 100) . "...");
3114		- }
3115		-
3116		- //error_log("=== MXCHAT PDF PROCESSING END (CLAUDE) ===");
3117		- return $claude_result;
3118		- } else {
3119		- //error_log("❌ CLAUDE PROCESSING FAILED or returned invalid result");
3120		- //error_log("Claude result type: " . gettype($claude_result));
3121		- if (is_array($claude_result)) {
3122		- //error_log("Claude result count: " . count($claude_result));
3123		- }
3124		- }
3125		- }
3126		-
3127		- // Fallback to basic processing
3128		- //error_log("🔄 FALLING BACK TO BASIC PDF PROCESSING...");
3129		-
3130		- $upload_dir = wp_upload_dir();
3131		- $temp_file = null;
3132		-
3133		- try {
3134		- // Your existing basic processing code here...
3135		- // (I'll include the key parts with debug logging)
3136		-
3137		- if (filter_var($pdf_source, FILTER_VALIDATE_URL)) {
3138		- //error_log("Downloading PDF from URL...");
3139		-
3140		- // SECURITY FIX: Validate URL before processing
3141		- if (!$this->mxchat_is_safe_pdf_url($pdf_source)) {
3142		- //error_log("❌ SECURITY: Blocked unsafe PDF URL");
3143		- return false;
3144		- }
3145		-
3146		- $temp_file = wp_tempnam($pdf_source);
3147		-
3148		- // SECURITY FIX: Changed from wp_remote_get to wp_safe_remote_get
3149		- $response = wp_safe_remote_get($pdf_source, [
3150		- 'timeout' => 60,
3151		- 'headers' => ['User-Agent' => 'MxChat PDF Processor']
3152		- ]);
3153		-
3154		- if (is_wp_error($response) || wp_remote_retrieve_response_code($response) !== 200) {
3155		- $error_message = is_wp_error($response) ? $response->get_error_message() : 'HTTP ' . wp_remote_retrieve_response_code($response);
3156		- //error_log("❌ BASIC PROCESSING: Failed to download PDF: " . $error_message);
3157		- return false;
3158		- }
3159		-
3160		- global $wp_filesystem;
3161		- if (empty($wp_filesystem)) {
3162		- require_once ABSPATH . 'wp-admin/includes/file.php';
3163		- WP_Filesystem();
3164		- }
3165		- $wp_filesystem->put_contents($temp_file, wp_remote_retrieve_body($response), FS_CHMOD_FILE);
3166		- //error_log("✅ PDF downloaded successfully");
3167		- } else {
3168		- $temp_file = $pdf_source;
3169		- //error_log("Using local PDF file: " . $temp_file);
3170		- }
3171		-
3172		- // Parse PDF
3173		- //error_log("Parsing PDF with basic parser...");
3174		- mxchat_load_pdf_parser();
3175		- $parser = new \Smalot\PdfParser\Parser();
3176		- $pdf = $parser->parseFile($temp_file);
3177		- $pages = $pdf->getPages();
3178		-
3179		- //error_log("PDF contains " . count($pages) . " pages");
3180		-
3181		- if (count($pages) > $max_pages) {
3182		- //error_log("❌ BASIC PROCESSING: Too many pages (" . count($pages) . " > " . $max_pages . ")");
3183		- if (filter_var($pdf_source, FILTER_VALIDATE_URL) && $temp_file) {
3184		- unlink($temp_file);
3185		- }
3186		- return 'too_many_pages';
3187		- }
3188		-
3189		- $embeddings = [];
3190		- $processed_pages = 0;
3191		-
3192		- foreach ($pages as $page_number => $page) {
3193		- $text = $page->getText();
3194		-
3195		- if (empty(trim($text))) {
3196		- //error_log("Skipping empty page: " . ($page_number + 1));
3197		- continue;
3198		- }
3199		-
3200		- $text = $this->mxchat_clean_text($text);
3201		-
3202		- $embedding = $this->mxchat_generate_embedding(
3203		- __("Page ", 'mxchat') . ($page_number + 1) . ": " . $text,
3204		- $this->options['api_key']
3205		- );
3206		-
3207		- if ($embedding) {
3208		- $embeddings[] = [
3209		- 'page_number' => $page_number + 1,
3210		- 'embedding' => $embedding,
3211		- 'text' => $text,
3212		- 'enhanced' => false, // CLEARLY MARK AS BASIC
3213		- 'processing_method' => 'basic_pdf_parser'
3214		- ];
3215		- $processed_pages++;
3216		- }
3217		- }
3218		-
3219		- //error_log("✅ BASIC PROCESSING COMPLETE: " . $processed_pages . " pages processed");
3220		-
3221		- // Cleanup
3222		- if (filter_var($pdf_source, FILTER_VALIDATE_URL) && $temp_file && file_exists($temp_file)) {
3223		- unlink($temp_file);
3224		- }
3225		-
3226		- //error_log("=== MXCHAT PDF PROCESSING END (BASIC) ===");
3227		- return $embeddings;
3228		-
3229		- } catch (\Exception $e) {
3230		- //error_log("❌ BASIC PROCESSING ERROR: " . $e->getMessage());
3231		- if (filter_var($pdf_source, FILTER_VALIDATE_URL) && $temp_file && file_exists($temp_file)) {
3232		- unlink($temp_file);
3233		- }
3234		- //error_log("=== MXCHAT PDF PROCESSING END (ERROR) ===");
3235		- return false;
3236		- }
3237		-}
3238		-
3239		-
3240		-/**
3241		- * Validate PDF URL for security
3242		- * Prevents SSRF attacks by blocking dangerous URLs
3243		- */
3244		-
3245		-private function mxchat_is_safe_pdf_url($url) {
3246		- // Use WordPress core function for comprehensive validation
3247		- // This blocks localhost, private IPs, and reserved IP ranges
3248		- $validated_url = wp_http_validate_url($url);
3249		-
3250		- if ($validated_url === false) {
3251		- return false;
3252		- }
3253		-
3254		- // Additional check: only allow HTTP/HTTPS schemes
3255		- $parsed = parse_url($url);
3256		- if (!isset($parsed['scheme']) || !in_array($parsed['scheme'], ['http', 'https'], true)) {
3257		- return false;
3258		- }
3259		-
3260		- return true;
3261		-}
3262		-
3263		-
3264		-private function mxchat_clean_text($text) {
3265		- // Remove excessive whitespace
3266		- $text = preg_replace('/\s+/', ' ', $text);
3267		-
3268		- // Remove control characters except newlines and tabs
3269		- $text = preg_replace('/[\x00-\x08\x0B\x0C\x0E-\x1F\x7F]/', '', $text);
3270		-
3271		- // Normalize line endings
3272		- $text = str_replace(["\r\n", "\r"], "\n", $text);
3273		-
3274		- // Trim whitespace
3275		- $text = trim($text);
3276		-
3277		- return $text;
3278		-}
3279		-
3280		-private function find_relevant_pdf_pages($query_embedding, $embeddings) {
3281		- //error_log(esc_html__("find_relevant_pdf_pages called.", 'mxchat'));
3282		-
3283		- $most_relevant = null;
3284		- $highest_similarity = -INF;
3285		-
3286		- foreach ($embeddings as $page_data) {
3287		- $similarity = $this->mxchat_calculate_cosine_similarity($query_embedding, $page_data['embedding']);
3288		-
3289		- if ($similarity > $highest_similarity) {
3290		- $highest_similarity = $similarity;
3291		- $most_relevant = $page_data['page_number'];
3292		- }
3293		- }
3294		-
3295		- if (!is_null($most_relevant)) {
3296		- $page_numbers = range(max(1, $most_relevant - 1), min(count($embeddings), $most_relevant + 1));
3297		- return array_filter($embeddings, function ($page) use ($page_numbers) {
3298		- return in_array($page['page_number'], $page_numbers);
3299		- });
3300		- }
3301		-
3302		- return [];
3303		-}
3304		-
3305		-
3306		-public function handle_pdf_upload() {
3307		- check_ajax_referer('mxchat_chat_nonce', 'nonce');
3308		-
3309		- if (!isset($_FILES['pdf_file']) || !isset($_POST['session_id'])) {
3310		- wp_send_json_error(esc_html__('Missing required parameters.', 'mxchat'));
3311		- return;
3312		- }
3313		-
3314		- // SECURITY FIX: Check if PDF uploads are enabled in settings
3315		- $options = get_option('mxchat_options', array());
3316		- $show_pdf_button = isset($options['show_pdf_upload_button']) ? $options['show_pdf_upload_button'] : 'on';
3317		-
3318		- if ($show_pdf_button !== 'on') {
3319		- wp_send_json_error(esc_html__('PDF uploads are currently disabled.', 'mxchat'));
3320		- return;
3321		- }
3322		-
3323		- $file = $_FILES['pdf_file'];
3324		- $session_id = sanitize_text_field($_POST['session_id']);
3325		- $original_filename = sanitize_text_field($file['name']);
3326		-
3327		- // Update session owner if it changed (e.g. IP changed due to network switch)
3328		- $current_user_identifier = MxChat_User::mxchat_get_user_identifier();
3329		- $session_owner = get_option("mxchat_session_owner_{$session_id}");
3330		-
3331		- if (!$session_owner || $session_owner !== $current_user_identifier) {
3332		- update_option("mxchat_session_owner_{$session_id}", $current_user_identifier, 'no');
3333		- }
3334		-
3335		- $file_type = wp_check_filetype($file['name'], ['pdf' => 'application/pdf']);
3336		- if ($file_type['type'] !== 'application/pdf') {
3337		- wp_send_json_error(esc_html__('Invalid file type. Only PDF files are allowed.', 'mxchat'));
3338		- return;
3339		- }
3340		-
3341		- $upload_dir = wp_upload_dir();
3342		-
3343		- // SECURITY FIX: Generate random filename without exposing session_id
3344		- $random_string = wp_generate_password(20, false, false); // 20 char alphanumeric string
3345		- $pdf_filename = 'mxchat_' . $random_string . '_' . time() . '.pdf';
3346		- $pdf_path = $upload_dir['path'] . '/' . $pdf_filename;
3347		-
3348		- if (!move_uploaded_file($file['tmp_name'], $pdf_path)) {
3349		- wp_send_json_error(esc_html__('Failed to upload file.', 'mxchat'));
3350		- return;
3351		- }
3352		-
3353		- $this->clear_pdf_transients($session_id);
3354		-
3355		- $max_pages = isset($this->options['pdf_max_pages']) ? intval($this->options['pdf_max_pages']) : 69;
3356		- $embeddings = $this->fetch_and_split_pdf_pages($pdf_path, $max_pages);
3357		-
3358		- if ($embeddings === 'too_many_pages') {
3359		- unlink($pdf_path);
3360		- $error_message = sprintf(
3361		- $this->options['pdf_intent_error_text'] ??
3362		- esc_html__("The provided PDF exceeds the maximum allowed limit of %d pages. Please provide a smaller document.", 'mxchat'),
3363		- $max_pages
3364		- );
3365		- wp_send_json_error($error_message);
3366		- return;
3367		- }
3368		-
3369		- if ($embeddings === false || empty($embeddings)) {
3370		- unlink($pdf_path);
3371		- $error_message = $this->options['pdf_intent_error_text'] ??
3372		- esc_html__('The uploaded PDF appears to be empty or contains unsupported content.', 'mxchat');
3373		- wp_send_json_error($error_message);
3374		- return;
3375		- }
3376		-
3377		- if (!empty($embeddings)) {
3378		- // Store the mapping between session and the random filename
3379		- set_transient('mxchat_pdf_url_' . $session_id, $pdf_path, HOUR_IN_SECONDS);
3380		- set_transient('mxchat_pdf_filename_' . $session_id, $original_filename, HOUR_IN_SECONDS);
3381		- set_transient('mxchat_pdf_embeddings_' . $session_id, $embeddings, HOUR_IN_SECONDS);
3382		- set_transient('mxchat_include_pdf_in_context_' . $session_id, true, HOUR_IN_SECONDS);
3383		-
3384		- $success_message = $this->options['pdf_intent_success_text'] ??
3385		- esc_html__("I've processed the PDF. What questions do you have about it?", 'mxchat');
3386		-
3387		- wp_send_json_success([
3388		- 'message' => $success_message,
3389		- 'filename' => $original_filename
3390		- ]);
3391		- return;
3392		- }
3393		-
3394		- unlink($pdf_path);
3395		- $error_message = $this->options['pdf_intent_error_text'] ??
3396		- esc_html__('Sorry, I couldn\'t process the PDF. Please ensure it\'s a valid file.', 'mxchat');
3397		- wp_send_json_error($error_message);
3398		- return;
3399		-}
3400		-public function handle_pdf_remove() {
3401		- check_ajax_referer('mxchat_chat_nonce', 'nonce');
3402		-
3403		- if (empty($_POST['session_id'])) {
3404		- wp_send_json_error(esc_html__('Session ID missing.', 'mxchat'));
	212	+ // Generate and validate the embedding
	213	+ $user_message_embedding = $this->mxchat_generate_embedding($message_with_order_details, $this->options['api_key']);
	214	+ if (!is_array($user_message_embedding)) {
	215	+ wp_send_json_error('Error processing your message.');
3405	216	wp_die();
3406	217	}
3407	218
3408		- $session_id = sanitize_text_field($_POST['session_id']);
3409		- $pdf_path = get_transient('mxchat_pdf_url_' . $session_id);
	219	+ // Find relevant content based on embedding
	220	+ $relevant_content = $this->mxchat_find_relevant_content($user_message_embedding);
3410	221
3411		- if ($pdf_path && file_exists($pdf_path)) {
3412		- unlink($pdf_path);
3413		- }
	222	+ // Fetch conversation history from the database
	223	+ $conversation_history = $this->mxchat_fetch_conversation_history_for_ajax($session_id);
3414	224
3415		- $this->clear_pdf_transients($session_id);
	225	+ // Increment the chat count
	226	+ $this->mxchat_increment_chat_count();
3416	227
3417		- wp_send_json_success([
3418		- 'message' => esc_html__('PDF removed successfully.', 'mxchat')
3419		- ]);
3420		- wp_die();
3421		-}
	228	+ // Generate a response from the AI model
	229	+ $response = $this->mxchat_generate_response($relevant_content, $this->options['api_key'], $conversation_history);
3422	230
	231	+ // Save the bot response to the database
	232	+ $this->mxchat_save_chat_message($session_id, 'bot', $response);
3423	233
3424		-function mxchat_fetch_new_messages() {
3425		- $session_id = sanitize_text_field($_POST['session_id']);
3426		- $last_seen_id = sanitize_text_field($_POST['last_seen_id']);
3427		- $persistence_enabled = $_POST['persistence_enabled'] === 'true';
3428		- $initial_timestamp = isset($_POST['initial_timestamp']) ? intval($_POST['initial_timestamp']) : 0;
	234	+ // Send the response back to the client
	235	+ wp_send_json(['message' => $response]);
3429	236
3430		- if (empty($session_id)) {
3431		- //error_log(esc_html__('Fetch new messages error: Session ID missing.', 'mxchat'));
3432		- wp_send_json_error(['message' => esc_html__('Session ID missing.', 'mxchat')]);
3433		- wp_die();
3434		- }
3435		-
3436		- $history = get_option("mxchat_history_{$session_id}", []);
3437		-
3438		- //error_log("MxChat WhatsApp DEBUG: Fetch new messages for session {$session_id}");
3439		- //error_log("MxChat WhatsApp DEBUG: last_seen_id = " . var_export($last_seen_id, true));
3440		- //error_log("MxChat WhatsApp DEBUG: History count = " . count($history));
3441		- //error_log("MxChat WhatsApp DEBUG: Full history = " . print_r($history, true));
3442		-
3443		- $new_messages = array_filter($history, function ($message) use ($last_seen_id, $persistence_enabled, $initial_timestamp) {
3444		- //error_log("MxChat WhatsApp DEBUG: Checking message - ID: " . ($message['id'] ?? 'NO_ID') . ", Role: " . ($message['role'] ?? 'NO_ROLE'));
3445		-
3446		- // If persistence is enabled, show all new messages
3447		- if ($persistence_enabled) {
3448		- $has_id = !empty($message['id']);
3449		- $is_agent = $message['role'] === 'agent';
3450		-
3451		- // If last_seen_id is empty, 'NaN', or invalid, show all agent messages
3452		- if (empty($last_seen_id) || $last_seen_id === 'NaN' || $last_seen_id === 'undefined') {
3453		- $is_newer = true;
3454		- } else {
3455		- $is_newer = strcmp($message['id'] ?? '', $last_seen_id) > 0;
3456		- }
3457		-
3458		- //error_log("MxChat WhatsApp DEBUG: has_id={$has_id}, is_newer={$is_newer}, is_agent={$is_agent}");
3459		-
3460		- return $has_id && $is_newer && $is_agent;
3461		- }
3462		-
3463		- // If persistence is disabled, only show messages after initial timestamp
3464		- return !empty($message['id']) &&
3465		- $message['role'] === 'agent' &&
3466		- $message['timestamp'] > $initial_timestamp;
3467		- });
3468		-
3469		- //error_log("MxChat WhatsApp DEBUG: Filtered messages count = " . count($new_messages));
3470		-
3471		- // Include current chat mode so frontend can detect agent→AI transitions
3472		- $chat_mode = get_option("mxchat_mode_{$session_id}", 'ai');
3473		-
3474		- wp_send_json_success([
3475		- 'new_messages' => array_values($new_messages),
3476		- 'chat_mode' => $chat_mode
3477		- ]);
3478	237	wp_die();
3479	238	}
3480		-public function mxchat_live_agent_handover($message, $user_id, $session_id) {
3481		- // First check if live agents are available
3482		- $live_agent_available = $this->options['live_agent_status'] ?? 'off';
3483		- if ($live_agent_available !== 'on') {
3484		- $away_message = $this->options['live_agent_away_message'] ?? 'Sorry, live agents are currently unavailable. I can continue helping you as an AI assistant.';
3485		- $this->fallbackResponse = [
3486		- 'text' => $away_message,
3487		- 'html' => '',
3488		- 'images' => [],
3489		- 'chat_mode' => 'ai'
3490		- ];
3491		- wp_send_json([
3492		- 'text' => $away_message,
3493		- 'html' => '',
3494		- 'chat_mode' => 'ai',
3495		- 'session_id' => $session_id
3496		- ]);
3497		- wp_die();
3498		- }
3499	239
3500		- $slack_bot_token = $this->options['live_agent_bot_token'] ?? '';
3501		-
3502		- if (empty($slack_bot_token)) {
3503		- return false;
3504		- }
3505	240
3506		- // Check if channel already exists for this session
3507		- $channel_id = get_option("mxchat_channel_{$session_id}", '');
3508		-
3509		- if (empty($channel_id)) {
3510		- // Create new channel with session ID as name
3511		- $channel_name = $this->generate_channel_name($session_id);
3512		-
3513		- //error_log("Attempting to create channel: $channel_name");
3514		-
3515		- $response = wp_remote_post('https://slack.com/api/conversations.create', [
3516		- 'headers' => [
3517		- 'Content-Type' => 'application/json',
3518		- 'Authorization' => 'Bearer ' . $slack_bot_token
3519		- ],
3520		- 'body' => json_encode([
3521		- 'name' => $channel_name,
3522		- 'is_private' => false // Public channel - anyone in workspace can join
3523		- ])
3524		- ]);
3525		-
3526		- if (!is_wp_error($response)) {
3527		- $response_body = wp_remote_retrieve_body($response);
3528		- $response_data = json_decode($response_body, true);
3529		-
3530		- //error_log("Channel creation response: " . $response_body);
3531		-
3532		- if (isset($response_data['ok']) && $response_data['ok']) {
3533		- $channel_id = $response_data['channel']['id'];
3534		- $actual_channel_name = $response_data['channel']['name'] ?? 'unknown';
3535		- //error_log("Channel created successfully: ID=$channel_id, Name=$actual_channel_name");
3536		- update_option("mxchat_channel_{$session_id}", $channel_id);
3537		-
3538		- // Auto-invite agents to the channel
3539		- $agent_user_ids = $this->options['live_agent_user_ids'] ?? '';
3540		-
3541		- if (!empty($agent_user_ids)) {
3542		- // Parse user IDs (one per line)
3543		- $user_ids = array_filter(array_map('trim', explode("\n", $agent_user_ids)));
3544		-
3545		- foreach ($user_ids as $user_id_to_invite) {
3546		- //error_log("Inviting user to channel: $user_id_to_invite");
3547		-
3548		- $invite_response = wp_remote_post('https://slack.com/api/conversations.invite', [
3549		- 'headers' => [
3550		- 'Content-Type' => 'application/json',
3551		- 'Authorization' => 'Bearer ' . $slack_bot_token
3552		- ],
3553		- 'body' => json_encode([
3554		- 'channel' => $channel_id,
3555		- 'users' => $user_id_to_invite
3556		- ])
3557		- ]);
3558		-
3559		- if (!is_wp_error($invite_response)) {
3560		- $invite_body = wp_remote_retrieve_body($invite_response);
3561		- $invite_data = json_decode($invite_body, true);
3562		- //error_log("Invite response for $user_id_to_invite: " . $invite_body);
3563		-
3564		- if (isset($invite_data['ok']) && $invite_data['ok']) {
3565		- //error_log("Successfully invited user $user_id_to_invite to channel");
3566		- } else {
3567		- //error_log("Failed to invite user $user_id_to_invite: " . ($invite_data['error'] ?? 'Unknown error'));
3568		- }
3569		- } else {
3570		- //error_log("WP Error inviting user $user_id_to_invite: " . $invite_response->get_error_message());
3571		- }
3572		- }
3573		- } else {
3574		- //error_log("No agent user IDs configured for auto-invite");
3575		- }
3576		- } else {
3577		- //error_log("Channel creation failed: " . ($response_data['error'] ?? 'Unknown error'));
3578		- }
3579		- } else {
3580		- //error_log("WP Error creating channel: " . $response->get_error_message());
3581		- }
3582		-
3583		- if (empty($channel_id)) {
3584		- return false; // Failed to create channel
3585		- }
3586		- }
3587		-
3588		- // Get recent chat history
3589		- $history = get_option("mxchat_history_{$session_id}", []);
3590		- $recent_history = array_slice($history, -5);
3591		-
3592		- // Format conversation context
3593		- $conversation_context = "";
3594		- if (!empty($recent_history)) {
3595		- $conversation_context = "*Recent Conversation:*\n";
3596		- foreach ($recent_history as $hist_message) {
3597		- $role_display = $hist_message['role'] === 'user' ? 'User' : 'AI';
3598		- $conversation_context .= ">{$role_display}: {$hist_message['content']}\n";
3599		- }
3600		- $conversation_context .= "\n";
3601		- }
3602		-
3603		- update_option("mxchat_mode_{$session_id}", 'agent');
3604		-
3605		- // Send message to channel
3606		- $channel_message = "🔔 *New Live Agent Request*\n\n";
3607		- $channel_message .= "*Session ID:* `{$session_id}`\n";
3608		- $channel_message .= "*User ID:* `{$user_id}`\n\n";
3609		-
3610		- if (!empty($conversation_context)) {
3611		- $channel_message .= $conversation_context;
3612		- }
3613		-
3614		- $channel_message .= "*Current Message:*\n{$message}\n\n";
3615		- $channel_message .= "_Reply directly in this channel - all messages will go to the user_";
3616		-
3617		- wp_remote_post('https://slack.com/api/chat.postMessage', [
3618		- 'headers' => [
3619		- 'Content-Type' => 'application/json',
3620		- 'Authorization' => 'Bearer ' . $slack_bot_token
3621		- ],
3622		- 'body' => json_encode([
3623		- 'channel' => $channel_id,
3624		- 'text' => $channel_message,
3625		- 'mrkdwn' => true
3626		- ])
3627		- ]);
3628		-
3629		- $success_message = $this->options['live_agent_notification_message'] ?? 'Live agent has been notified.';
3630		- $this->mxchat_save_chat_message($session_id, 'bot', $success_message);
3631		-
3632		- $this->fallbackResponse = [
3633		- 'text' => $success_message,
3634		- 'html' => '',
3635		- 'images' => [],
3636		- 'chat_mode' => 'agent'
3637		- ];
3638		-
3639		- wp_send_json([
3640		- 'success' => true,
3641		- 'text' => $success_message,
3642		- 'html' => '',
3643		- 'chat_mode' => 'agent',
3644		- 'session_id' => $session_id,
3645		- 'fallbackResponse' => $this->fallbackResponse
3646		- ]);
3647		- wp_die();
	241	+private function mxchat_get_user_identifier() {
	242	+ return MxChat_User::mxchat_get_user_identifier();
3648	243	}
3649	244
3650		-private function generate_channel_name($session_id) {
3651		- $email = null;
3652		- $name = null;
3653		-
3654		- // 1. First priority: Check if user is logged in and get their info
3655		- if (is_user_logged_in()) {
3656		- $current_user = wp_get_current_user();
3657		- if (!empty($current_user->user_email)) {
3658		- $email = $current_user->user_email;
3659		- //error_log("[DEBUG] Using logged-in user email for channel: {$email}");
3660		- }
3661		- if (!empty($current_user->display_name)) {
3662		- $name = $current_user->display_name;
3663		- //error_log("[DEBUG] Using logged-in user name for channel: {$name}");
3664		- }
3665		- }
3666		-
3667		- // 2. Second priority: Check for saved email/name from "require email to chat" option
3668		- if (empty($email)) {
3669		- $email_option_key = "mxchat_email_{$session_id}";
3670		- $saved_email = get_option($email_option_key);
3671		- if (!empty($saved_email)) {
3672		- $email = $saved_email;
3673		- //error_log("[DEBUG] Using saved email from session for channel: {$email}");
3674		- }
3675		- }
3676		-
3677		- if (empty($name)) {
3678		- $name_option_key = "mxchat_name_{$session_id}";
3679		- $saved_name = get_option($name_option_key);
3680		- if (!empty($saved_name)) {
3681		- $name = $saved_name;
3682		- //error_log("[DEBUG] Using saved name from session for channel: {$name}");
3683		- }
3684		- }
3685		-
3686		- // 3. Third priority: Check existing chat transcript for email/name
3687		- if (empty($email) || empty($name)) {
3688		- global $wpdb;
3689		- $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
3690		- $existing_data = $wpdb->get_row($wpdb->prepare(
3691		- "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",
3692		- $session_id
3693		- ));
3694		-
3695		- if ($existing_data) {
3696		- if (empty($email) && !empty($existing_data->user_email)) {
3697		- $email = $existing_data->user_email;
3698		- //error_log("[DEBUG] Using email from chat transcript for channel: {$email}");
3699		- }
3700		- if (empty($name) && !empty($existing_data->user_name)) {
3701		- $name = $existing_data->user_name;
3702		- //error_log("[DEBUG] Using name from chat transcript for channel: {$name}");
3703		- }
3704		- }
3705		- }
3706		-
3707		- // 4. Generate channel name based on priority: Name > Email > Session ID
3708		- $channel_name = '';
3709		-
3710		- if (!empty($name)) {
3711		- // Convert name to valid Slack channel name
3712		- $base_name = strtolower(trim($name));
3713		- // Replace spaces and invalid characters
3714		- $base_name = preg_replace('/[^a-z0-9\s]/', '', $base_name);
3715		- $base_name = preg_replace('/\s+/', '-', $base_name);
3716		- $base_name = trim($base_name, '-');
3717		-
3718		- // Get last 4 characters of session ID for uniqueness
3719		- $session_suffix = substr($session_id, -4);
3720		- $channel_name = 'chat-' . $base_name . '-' . strtolower($session_suffix);
3721		-
3722		- // Slack channel names have a 21 character limit
3723		- if (strlen($channel_name) > 21) {
3724		- // Calculate available space for name (21 - 'chat-' - '-' - session_suffix)
3725		- $available_space = 21 - 5 - 1 - strlen($session_suffix); // 'chat-' = 5, '-' = 1
3726		- $truncated_name = substr($base_name, 0, $available_space);
3727		- $truncated_name = rtrim($truncated_name, '-'); // Remove trailing hyphen
3728		- $channel_name = 'chat-' . $truncated_name . '-' . strtolower($session_suffix);
3729		- }
3730		-
3731		- //error_log("[DEBUG] Using name for channel: {$channel_name} (from name: {$name})");
3732		-
3733		- } elseif (!empty($email)) {
3734		- // Convert email to valid Slack channel name (your existing logic)
3735		- $channel_name = 'chat-' . strtolower(str_replace(['@', '.', '+', '_'], ['-at-', '-', '-plus-', '-'], $email));
3736		- // Remove any remaining invalid characters
3737		- $channel_name = preg_replace('/[^a-z0-9\-]/', '', $channel_name);
3738		- // Ensure it doesn't end with a hyphen
3739		- $channel_name = rtrim($channel_name, '-');
3740		- // Slack channel names have a 21 character limit, so truncate if needed
3741		- if (strlen($channel_name) > 21) {
3742		- $channel_name = substr($channel_name, 0, 21);
3743		- $channel_name = rtrim($channel_name, '-'); // Remove trailing hyphen if truncation created one
3744		- }
3745		-
3746		- //error_log("[DEBUG] Using email for channel: {$channel_name} (from email: {$email})");
3747		-
3748		- } else {
3749		- // Fallback to session ID if no name or email found
3750		- $channel_name = 'chat-' . strtolower(preg_replace('/[^a-zA-Z0-9]/', '', $session_id));
3751		- //error_log("[DEBUG] No name or email found, using session ID for channel: {$channel_name}");
3752		- }
3753		-
3754		- // Final validation - ensure channel name meets Slack requirements
3755		- if (strlen($channel_name) > 21) {
3756		- $channel_name = substr($channel_name, 0, 21);
3757		- $channel_name = rtrim($channel_name, '-');
3758		- }
3759		-
3760		- //error_log("[DEBUG] Generated channel name: {$channel_name}");
3761		- return $channel_name;
3762		-}
3763	245
3764		-/**
3765		- * Telegram Live Agent Handover
3766		- * Creates a forum topic in the Telegram group and notifies agents
3767		- */
3768		-public function mxchat_telegram_live_agent_handover($message, $user_id, $session_id) {
3769		- // Check if Telegram agents are available
3770		- $telegram_available = $this->options['telegram_status'] ?? 'off';
3771		- if ($telegram_available !== 'on') {
3772		- $away_message = $this->options['telegram_away_message'] ?? 'Sorry, live agents are currently unavailable. I can continue helping you as an AI assistant.';
3773		- $this->fallbackResponse = [
3774		- 'text' => $away_message,
3775		- 'html' => '',
3776		- 'images' => [],
3777		- 'chat_mode' => 'ai'
3778		- ];
3779		- wp_send_json([
3780		- 'text' => $away_message,
3781		- 'html' => '',
3782		- 'chat_mode' => 'ai',
3783		- 'session_id' => $session_id
3784		- ]);
3785		- wp_die();
3786		- }
3787	246
3788		- $telegram_bot_token = $this->options['telegram_bot_token'] ?? '';
3789		- $telegram_group_id = $this->options['telegram_group_id'] ?? '';
	247	+ private function mxchat_generate_embedding($text, $api_key) {
	248	+ $endpoint = 'https://api.openai.com/v1/embeddings';
3790	249
3791		- if (empty($telegram_bot_token) || empty($telegram_group_id)) {
3792		- return false;
3793		- }
3794		-
3795		- // Check if topic already exists for this session
3796		- $topic_id = get_option("mxchat_telegram_topic_{$session_id}", '');
3797		-
3798		- if (empty($topic_id)) {
3799		- // Generate topic name
3800		- $topic_name = $this->generate_telegram_topic_name($session_id);
3801		-
3802		- // Random icon color (Telegram forum topic colors)
3803		- $icon_colors = [0x6FB9F0, 0xFFD67E, 0xCB86DB, 0x8EEE98, 0xFF93B2, 0xFB6F5F];
3804		- $icon_color = $icon_colors[array_rand($icon_colors)];
3805		-
3806		- // Create forum topic
3807		- $response = wp_remote_post("https://api.telegram.org/bot{$telegram_bot_token}/createForumTopic", [
3808		- 'headers' => ['Content-Type' => 'application/json'],
3809		- 'body' => json_encode([
3810		- 'chat_id' => $telegram_group_id,
3811		- 'name' => $topic_name,
3812		- 'icon_color' => $icon_color
3813		- ])
	250	+ $body = wp_json_encode([
	251	+ 'input' => $text,
	252	+ 'model' => 'text-embedding-ada-002'
3814	253	]);
3815	254
3816		- if (!is_wp_error($response)) {
3817		- $response_body = wp_remote_retrieve_body($response);
3818		- $response_data = json_decode($response_body, true);
3819		-
3820		- if (isset($response_data['ok']) && $response_data['ok']) {
3821		- $topic_id = $response_data['result']['message_thread_id'];
3822		- update_option("mxchat_telegram_topic_{$session_id}", $topic_id);
3823		- update_option("mxchat_telegram_group_{$session_id}", $telegram_group_id);
3824		- }
3825		- }
3826		-
3827		- if (empty($topic_id)) {
3828		- return false; // Failed to create topic
3829		- }
3830		- }
3831		-
3832		- // Get recent chat history
3833		- $history = get_option("mxchat_history_{$session_id}", []);
3834		- $recent_history = array_slice($history, -5);
3835		-
3836		- // Format conversation context for Telegram (HTML format)
3837		- $conversation_context = "";
3838		- if (!empty($recent_history)) {
3839		- $conversation_context = "<b>Recent Conversation:</b>\n";
3840		- foreach ($recent_history as $hist_message) {
3841		- $role_display = $hist_message['role'] === 'user' ? '👤 User' : '🤖 AI';
3842		- $escaped_content = htmlspecialchars($hist_message['content'], ENT_QUOTES, 'UTF-8');
3843		- $conversation_context .= "{$role_display}: {$escaped_content}\n";
3844		- }
3845		- $conversation_context .= "\n";
3846		- }
3847		-
3848		- // Get user info
3849		- $user_email = get_option("mxchat_email_{$session_id}", 'Not provided');
3850		- $user_name = get_option("mxchat_name_{$session_id}", 'Anonymous');
3851		-
3852		- // Update session mode
3853		- update_option("mxchat_mode_{$session_id}", 'agent');
3854		-
3855		- // Send initial message to topic
3856		- $escaped_message = htmlspecialchars($message, ENT_QUOTES, 'UTF-8');
3857		- $topic_message = "🔔 <b>New Live Agent Request</b>\n\n";
3858		- $topic_message .= "<b>Session ID:</b> <code>{$session_id}</code>\n";
3859		- $topic_message .= "<b>User:</b> {$user_name}\n";
3860		- $topic_message .= "<b>Email:</b> {$user_email}\n\n";
3861		-
3862		- if (!empty($conversation_context)) {
3863		- $topic_message .= $conversation_context;
3864		- }
3865		-
3866		- $topic_message .= "<b>Current Message:</b>\n{$escaped_message}\n\n";
3867		- $topic_message .= "<i>Reply in this topic - messages will be sent to the user</i>\n";
3868		- $topic_message .= "<i>Type #close, #end, #disconnect, or #done to end the session</i>";
3869		-
3870		- wp_remote_post("https://api.telegram.org/bot{$telegram_bot_token}/sendMessage", [
3871		- 'headers' => ['Content-Type' => 'application/json'],
3872		- 'body' => json_encode([
3873		- 'chat_id' => $telegram_group_id,
3874		- 'message_thread_id' => $topic_id,
3875		- 'text' => $topic_message,
3876		- 'parse_mode' => 'HTML'
3877		- ])
3878		- ]);
3879		-
3880		- $success_message = $this->options['telegram_notification_message'] ?? "I've notified a support agent. Please allow a moment for them to respond.";
3881		- $this->mxchat_save_chat_message($session_id, 'bot', $success_message);
3882		-
3883		- $this->fallbackResponse = [
3884		- 'text' => $success_message,
3885		- 'html' => '',
3886		- 'images' => [],
3887		- 'chat_mode' => 'agent'
3888		- ];
3889		-
3890		- wp_send_json([
3891		- 'success' => true,
3892		- 'text' => $success_message,
3893		- 'html' => '',
3894		- 'chat_mode' => 'agent',
3895		- 'session_id' => $session_id,
3896		- 'fallbackResponse' => $this->fallbackResponse
3897		- ]);
3898		- wp_die();
3899		-}
3900		-
3901		-/**
3902		- * Generate topic name for Telegram forum
3903		- */
3904		-private function generate_telegram_topic_name($session_id) {
3905		- $name = null;
3906		- $email = null;
3907		-
3908		- // Check logged in user
3909		- if (is_user_logged_in()) {
3910		- $current_user = wp_get_current_user();
3911		- if (!empty($current_user->display_name)) {
3912		- $name = $current_user->display_name;
3913		- }
3914		- if (!empty($current_user->user_email)) {
3915		- $email = $current_user->user_email;
3916		- }
3917		- }
3918		-
3919		- // Check session data
3920		- if (empty($name)) {
3921		- $name = get_option("mxchat_name_{$session_id}");
3922		- }
3923		- if (empty($email)) {
3924		- $email = get_option("mxchat_email_{$session_id}");
3925		- }
3926		-
3927		- // Generate topic name
3928		- $session_suffix = substr($session_id, -6);
3929		-
3930		- if (!empty($name)) {
3931		- // Clean name for topic (max 128 chars in Telegram)
3932		- $clean_name = preg_replace('/[^\p{L}\p{N}\s\-]/u', '', $name);
3933		- $clean_name = trim($clean_name);
3934		- if (strlen($clean_name) > 50) {
3935		- $clean_name = substr($clean_name, 0, 50);
3936		- }
3937		- return "Chat - {$clean_name} ({$session_suffix})";
3938		- } elseif (!empty($email)) {
3939		- // Use email prefix
3940		- $email_prefix = explode('@', $email)[0];
3941		- if (strlen($email_prefix) > 30) {
3942		- $email_prefix = substr($email_prefix, 0, 30);
3943		- }
3944		- return "Chat - {$email_prefix} ({$session_suffix})";
3945		- }
3946		-
3947		- return "Chat - {$session_suffix}";
3948		-}
3949		-
3950		-/**
3951		- * Send user message to Telegram agent
3952		- */
3953		-public function mxchat_send_user_message_to_telegram_agent($message, $user_id, $session_id) {
3954		- $telegram_bot_token = $this->options['telegram_bot_token'] ?? '';
3955		- $topic_id = get_option("mxchat_telegram_topic_{$session_id}", '');
3956		- $group_id = get_option("mxchat_telegram_group_{$session_id}", '');
3957		-
3958		- if (empty($telegram_bot_token) || empty($topic_id) || empty($group_id)) {
3959		- return false;
3960		- }
3961		-
3962		- $escaped_message = htmlspecialchars($message, ENT_QUOTES, 'UTF-8');
3963		- $user_message = "👤 <b>User:</b> {$escaped_message}";
3964		-
3965		- $response = wp_remote_post("https://api.telegram.org/bot{$telegram_bot_token}/sendMessage", [
3966		- 'headers' => ['Content-Type' => 'application/json'],
3967		- 'body' => json_encode([
3968		- 'chat_id' => $group_id,
3969		- 'message_thread_id' => $topic_id,
3970		- 'text' => $user_message,
3971		- 'parse_mode' => 'HTML'
3972		- ])
3973		- ]);
3974		-
3975		- return !is_wp_error($response);
3976		-}
3977		-
3978		-/**
3979		- * Handle incoming Telegram webhook
3980		- */
3981		-public function handle_telegram_webhook(WP_REST_Request $request) {
3982		- $body = $request->get_body();
3983		- $data = json_decode($body, true);
3984		-
3985		- //error_log('[MxChat Telegram DEBUG] Webhook received: ' . $body);
3986		-
3987		- // Handle message events from forum topics
3988		- if (isset($data['message'])) {
3989		- $message_data = $data['message'];
3990		-
3991		- // Skip if not from a forum topic
3992		- if (!isset($message_data['message_thread_id'])) {
3993		- //error_log('[MxChat Telegram DEBUG] Skipped: No message_thread_id (not a forum topic message)');
3994		- return new WP_REST_Response(['ok' => true]);
3995		- }
3996		-
3997		- // Skip bot messages
3998		- if (isset($message_data['from']['is_bot']) && $message_data['from']['is_bot']) {
3999		- //error_log('[MxChat Telegram DEBUG] Skipped: Message from bot');
4000		- return new WP_REST_Response(['ok' => true]);
4001		- }
4002		-
4003		- $chat_id = $message_data['chat']['id'] ?? '';
4004		- $topic_id = $message_data['message_thread_id'];
4005		- $message_text = $message_data['text'] ?? '';
4006		- $message_id = $message_data['message_id'] ?? '';
4007		- $from = $message_data['from'] ?? [];
4008		- $agent_name = trim(($from['first_name'] ?? '') . ' ' . ($from['last_name'] ?? ''));
4009		- if (empty($agent_name)) {
4010		- $agent_name = $from['username'] ?? 'Agent';
4011		- }
4012		-
4013		- //error_log("[MxChat Telegram DEBUG] Parsed: chat_id={$chat_id}, topic_id={$topic_id}, agent={$agent_name}, text={$message_text}");
4014		-
4015		- // Skip empty messages
4016		- if (empty($message_text)) {
4017		- //error_log('[MxChat Telegram DEBUG] Skipped: Empty message text');
4018		- return new WP_REST_Response(['ok' => true]);
4019		- }
4020		-
4021		- // Find session ID by topic ID - cast to string for comparison
4022		- global $wpdb;
4023		- $topic_id_str = strval($topic_id);
4024		- $session_option = $wpdb->get_var(
4025		- $wpdb->prepare(
4026		- "SELECT option_name FROM {$wpdb->options}
4027		- WHERE option_name LIKE %s
4028		- AND option_value = %s",
4029		- 'mxchat_telegram_topic_%',
4030		- $topic_id_str
4031		- )
4032		- );
4033		-
4034		- //error_log("[MxChat Telegram DEBUG] Looking for topic_id={$topic_id_str} in options, found: " . ($session_option ?: 'NULL'));
4035		-
4036		- if ($session_option) {
4037		- $session_id = str_replace('mxchat_telegram_topic_', '', $session_option);
4038		- //error_log("[MxChat Telegram DEBUG] Session ID: {$session_id}");
4039		-
4040		- // Verify the group ID matches
4041		- $stored_group_id = get_option("mxchat_telegram_group_{$session_id}", '');
4042		- //error_log("[MxChat Telegram DEBUG] Stored group_id={$stored_group_id}, received chat_id={$chat_id}");
4043		-
4044		- if (strval($stored_group_id) != strval($chat_id)) {
4045		- //error_log('[MxChat Telegram DEBUG] Skipped: Group ID mismatch');
4046		- return new WP_REST_Response(['ok' => true]);
4047		- }
4048		-
4049		- // Check for closure commands
4050		- $lower_text = strtolower(trim($message_text));
4051		- if (in_array($lower_text, ['#close', '#end', '#disconnect', '#done'])) {
4052		- //error_log("[MxChat Telegram DEBUG] Closure command received: {$lower_text}");
4053		- // End the live agent session
4054		- update_option("mxchat_mode_{$session_id}", 'ai');
4055		-
4056		- // Save disconnect message
4057		- $disconnect_message = "Live agent session ended. You're now chatting with the AI assistant.";
4058		- $this->mxchat_save_chat_message($session_id, 'bot', $disconnect_message);
4059		-
4060		- // Notify in Telegram
4061		- $telegram_bot_token = $this->options['telegram_bot_token'] ?? '';
4062		- if (!empty($telegram_bot_token)) {
4063		- wp_remote_post("https://api.telegram.org/bot{$telegram_bot_token}/sendMessage", [
4064		- 'headers' => ['Content-Type' => 'application/json'],
4065		- 'body' => json_encode([
4066		- 'chat_id' => $chat_id,
4067		- 'message_thread_id' => $topic_id,
4068		- 'text' => "✅ Session closed. User returned to AI chatbot.",
4069		- 'parse_mode' => 'HTML'
4070		- ])
4071		- ]);
4072		-
4073		- // Optionally close the topic
4074		- wp_remote_post("https://api.telegram.org/bot{$telegram_bot_token}/closeForumTopic", [
4075		- 'headers' => ['Content-Type' => 'application/json'],
4076		- 'body' => json_encode([
4077		- 'chat_id' => $chat_id,
4078		- 'message_thread_id' => $topic_id
4079		- ])
4080		- ]);
4081		- }
4082		-
4083		- return new WP_REST_Response(['ok' => true]);
4084		- }
4085		-
4086		- // Deduplicate messages
4087		- $message_key = md5($session_id . $message_id . $message_text);
4088		- $processed_messages = get_transient('mxchat_telegram_messages_' . $session_id) ?: [];
4089		-
4090		- if (in_array($message_key, $processed_messages)) {
4091		- //error_log('[MxChat Telegram DEBUG] Skipped: Duplicate message');
4092		- return new WP_REST_Response(['ok' => true]);
4093		- }
4094		-
4095		- $processed_messages[] = $message_key;
4096		- if (count($processed_messages) > 50) {
4097		- $processed_messages = array_slice($processed_messages, -50);
4098		- }
4099		- set_transient('mxchat_telegram_messages_' . $session_id, $processed_messages, HOUR_IN_SECONDS);
4100		-
4101		- // Save the agent message - format with agent name prefix for proper parsing
4102		- $formatted_message = "Agent: {$agent_name} - {$message_text}";
4103		- //error_log("[MxChat Telegram DEBUG] Saving agent message: {$formatted_message}");
4104		-
4105		- $this->mxchat_save_chat_message($session_id, 'agent', $formatted_message);
4106		-
4107		- // Verify the message was saved to history
4108		- $history = get_option("mxchat_history_{$session_id}", []);
4109		- $last_message = end($history);
4110		- //error_log("[MxChat Telegram DEBUG] History after save - count: " . count($history) . ", last message role: " . ($last_message['role'] ?? 'none'));
4111		-
4112		- // Send confirmation back to Telegram
4113		- $telegram_bot_token = $this->options['telegram_bot_token'] ?? '';
4114		- if (!empty($telegram_bot_token)) {
4115		- $confirm_key = 'mxchat_telegram_confirm_' . $message_key;
4116		- if (!get_transient($confirm_key)) {
4117		- wp_remote_post("https://api.telegram.org/bot{$telegram_bot_token}/sendMessage", [
4118		- 'headers' => ['Content-Type' => 'application/json'],
4119		- 'body' => json_encode([
4120		- 'chat_id' => $chat_id,
4121		- 'message_thread_id' => $topic_id,
4122		- 'text' => "✅ <i>Message sent to user</i>",
4123		- 'parse_mode' => 'HTML',
4124		- 'reply_to_message_id' => $message_id
4125		- ])
4126		- ]);
4127		- set_transient($confirm_key, true, 300);
4128		- }
4129		- }
4130		- } else {
4131		- //error_log("[MxChat Telegram DEBUG] No session found for topic_id={$topic_id}");
4132		- }
4133		- } else {
4134		- //error_log('[MxChat Telegram DEBUG] No message in webhook data');
4135		- }
4136		-
4137		- return new WP_REST_Response(['ok' => true]);
4138		-}
4139		-
4140		-public function mxchat_send_user_message_to_agent($message, $user_id, $session_id) {
4141		- // Check if this is a Telegram agent session
4142		- $telegram_topic_id = get_option("mxchat_telegram_topic_{$session_id}", '');
4143		- if (!empty($telegram_topic_id)) {
4144		- return $this->mxchat_send_user_message_to_telegram_agent($message, $user_id, $session_id);
4145		- }
4146		-
4147		- // Otherwise, try Slack
4148		- $slack_bot_token = $this->options['live_agent_bot_token'] ?? '';
4149		- $channel_id = get_option("mxchat_channel_{$session_id}", '');
4150		-
4151		- if (empty($slack_bot_token) || empty($channel_id)) {
4152		- return false;
4153		- }
4154		-
4155		- $user_message = "💬 *User:* {$message}";
4156		-
4157		- $response = wp_remote_post('https://slack.com/api/chat.postMessage', [
4158		- 'headers' => [
4159		- 'Content-Type' => 'application/json',
4160		- 'Authorization' => 'Bearer ' . $slack_bot_token
4161		- ],
4162		- 'body' => json_encode([
4163		- 'channel' => $channel_id,
4164		- 'text' => $user_message,
4165		- 'mrkdwn' => true
4166		- ])
4167		- ]);
4168		-
4169		- return !is_wp_error($response);
4170		-}
4171		-public function handle_slack_interaction(WP_REST_Request $request) {
4172		- //error_log('Received Slack interaction');
4173		-
4174		- $payload = json_decode($request->get_param('payload'), true);
4175		- //error_log('Payload: ' . print_r($payload, true));
4176		-
4177		- // Handle button click
4178		- if ($payload['type'] === 'block_actions' && $payload['actions'][0]['action_id'] === 'reply_to_user') {
4179		- $session_id = $payload['actions'][0]['value'];
4180		- $trigger_id = $payload['trigger_id'];
4181		-
4182		- // Get Bot Token from settings
4183		- $slack_token = $this->options['live_agent_bot_token'] ?? '';
4184		-
4185		- if (empty($slack_token)) {
4186		- //error_log('Slack Bot Token not configured');
4187		- return new WP_REST_Response(['error' => esc_html__('Bot token not configured', 'mxchat')], 400);
4188		- }
4189		- $response = wp_remote_post('https://slack.com/api/views.open', [
	255	+ $args = [
	256	+ 'body' => $body,
4190	257	'headers' => [
4191	258	'Content-Type' => 'application/json',
4192		- 'Authorization' => 'Bearer ' . $slack_token
	259	+ 'Authorization' => 'Bearer ' . $api_key,
4193	260	],
4194		- 'body' => json_encode([
4195		- 'trigger_id' => $trigger_id,
4196		- 'view' => [
4197		- 'type' => 'modal',
4198		- 'callback_id' => 'reply_modal',
4199		- 'title' => [
4200		- 'type' => 'plain_text',
4201		- 'text' => __('Reply to User', 'mxchat')
4202		- ],
4203		- 'submit' => [
4204		- 'type' => 'plain_text',
4205		- 'text' => __('Send', 'mxchat')
4206		- ],
4207		- 'close' => [
4208		- 'type' => 'plain_text',
4209		- 'text' => __('Cancel', 'mxchat')
4210		- ],
4211		- 'blocks' => [
4212		- [
4213		- 'type' => 'input',
4214		- 'block_id' => 'reply_block',
4215		- 'label' => [
4216		- 'type' => 'plain_text',
4217		- 'text' => sprintf(__('Reply to session: %s', 'mxchat'), $session_id)
4218		- ],
4219		- 'element' => [
4220		- 'type' => 'plain_text_input',
4221		- 'action_id' => 'message',
4222		- 'multiline' => true,
4223		- 'placeholder' => [
4224		- 'type' => 'plain_text',
4225		- 'text' => __('Type your message here...', 'mxchat')
4226		- ]
4227		- ]
4228		- ]
4229		- ],
4230		- 'private_metadata' => $session_id
4231		- ]
4232		- ])
4233		- ]);
4234		-
4235		- //error_log('Views.open response: ' . print_r($response, true));
4236		-
4237		- // Return immediate acknowledgment
4238		- return new WP_REST_Response(['ok' => true]);
4239		- }
4240		-
4241		- // Handle modal submission
4242		-// Handle modal submission
4243		-if ($payload['type'] === 'view_submission') {
4244		- $session_id = $payload['view']['private_metadata'];
4245		- $message = $payload['view']['state']['values']['reply_block']['message']['value'];
4246		-
4247		- // Save the message (keep the message_id but don't include in response)
4248		- $this->mxchat_save_chat_message($session_id, 'agent', $message);
4249		-
4250		- // Keep the original response format for Slack
4251		- return new WP_REST_Response([
4252		- 'response_action' => 'clear'
4253		- ]);
4254		-}
4255		-
4256		- // Default acknowledgment
4257		- return new WP_REST_Response(['ok' => true]);
4258		-}
4259		-public function mxchat_handle_agent_response(WP_REST_Request $request) {
4260		- //error_log('Received agent response request');
4261		- //error_log('Request data: ' . print_r($request->get_params(), true));
4262		- // //error_log('Raw body: ' . file_get_contents('php://input'));
4263		-
4264		- // Get the data from Slack's slash command format
4265		- $command_text = $request->get_param('text');
4266		- // //error_log('Command text: ' . $command_text);
4267		-
4268		- if (empty($command_text)) {
4269		- //error_log(esc_html__('Agent response error: No command text received', 'mxchat'));
4270		- return new WP_REST_Response([
4271		- 'error' => esc_html__('Command text is required. Format: /reply session_id message', 'mxchat')
4272		- ], 400);
4273		- }
4274		-
4275		- // Split the command text into session_id and message
4276		- $parts = explode(' ', $command_text, 2);
4277		- if (count($parts) !== 2) {
4278		- //error_log('Agent response error: Invalid command format');
4279		- return new WP_REST_Response([
4280		- 'error' => esc_html__('Invalid format. Use: /reply session_id message', 'mxchat')
4281		- ], 400);
4282		- }
4283		-
4284		- $session_id = sanitize_text_field($parts[0]);
4285		- $message = sanitize_text_field($parts[1]);
4286		-
4287		- //error_log("Processing agent response - Session ID: $session_id, Message: $message");
4288		-
4289		- // Save the message
4290		- $message_id = $this->mxchat_save_chat_message($session_id, 'agent', $message);
4291		-
4292		- if (!$message_id) {
4293		- // //error_log('Failed to save agent message');
4294		- return new WP_REST_Response([
4295		- 'error' => esc_html__('Failed to save message', 'mxchat')
4296		- ], 500);
4297		- }
4298		-
4299		- // Return success response in Slack's expected format
4300		- return new WP_REST_Response([
4301		- 'response_type' => 'in_channel',
4302		- 'text' => esc_html__("Message sent successfully to session $session_id", 'mxchat')
4303		- ], 200);
4304		-}
4305		-public function mxchat_handle_switch_to_chatbot_intent($message, $user_id, $session_id) {
4306		- // Update mode to AI
4307		- update_option("mxchat_mode_{$session_id}", 'ai');
4308		-
4309		- // Clear any existing PDF context to start fresh
4310		- $this->clear_pdf_transients($session_id);
4311		-
4312		- // Set the response with explicit chat_mode
4313		- $this->fallbackResponse = [
4314		- 'text' => esc_html__('You are now chatting with the AI chatbot.', 'mxchat'),
4315		- 'html' => '',
4316		- 'images' => [],
4317		- 'chat_mode' => 'ai' // Ensure this is set
4318		- ];
4319		-
4320		- // Return the complete response array instead of just true
4321		- return $this->fallbackResponse;
4322		-}
4323		-
4324		-public function handle_slack_messages(WP_REST_Request $request) {
4325		- // Log the incoming request for debugging
4326		- //error_log('Slack events request received: ' . $request->get_body());
4327		-
4328		- $body = $request->get_body();
4329		- $data = json_decode($body, true);
4330		-
4331		- // Handle Slack URL verification
4332		- if (isset($data['type']) && $data['type'] === 'url_verification') {
4333		- //error_log('Slack URL verification challenge: ' . $data['challenge']);
4334		- return new WP_REST_Response($data['challenge'], 200, ['Content-Type' => 'text/plain']);
4335		- }
4336		-
4337		- // IMPORTANT: Handle Slack's event deduplication
4338		- if (isset($data['event_id'])) {
4339		- $event_id = $data['event_id'];
4340		- $processed_events = get_transient('mxchat_slack_events') ?: [];
4341		-
4342		- // Check if we've already processed this event
4343		- if (in_array($event_id, $processed_events)) {
4344		- //error_log("Duplicate event detected: $event_id");
4345		- return new WP_REST_Response(['ok' => true]);
4346		- }
4347		-
4348		- // Add this event to processed list
4349		- $processed_events[] = $event_id;
4350		- // Keep only last 100 events to prevent memory issues
4351		- if (count($processed_events) > 100) {
4352		- $processed_events = array_slice($processed_events, -100);
4353		- }
4354		- // Store for 1 hour
4355		- set_transient('mxchat_slack_events', $processed_events, HOUR_IN_SECONDS);
4356		- }
4357		-
4358		- // Handle message events
4359		- if (isset($data['event']) && $data['event']['type'] === 'message') {
4360		- $event = $data['event'];
4361		-
4362		- // Skip bot messages and messages with subtypes (like bot_message)
4363		- if (isset($event['bot_id']) || isset($event['subtype'])) {
4364		- return new WP_REST_Response(['ok' => true]);
4365		- }
4366		-
4367		- // Additional check: Skip if this is a threaded reply to our confirmation
4368		- if (isset($event['thread_ts']) && $event['thread_ts'] !== $event['ts']) {
4369		- return new WP_REST_Response(['ok' => true]);
4370		- }
4371		-
4372		- $channel_id = $event['channel'];
4373		- $message_text = $event['text'] ?? '';
4374		- $message_ts = $event['ts'] ?? '';
4375		-
4376		- // Find session ID by looking for matching channel
4377		- global $wpdb;
4378		- $session_option = $wpdb->get_var(
4379		- $wpdb->prepare(
4380		- "SELECT option_name FROM {$wpdb->options}
4381		- WHERE option_name LIKE 'mxchat_channel_%'
4382		- AND option_value = %s",
4383		- $channel_id
4384		- )
4385		- );
4386		-
4387		- if ($session_option) {
4388		- $session_id = str_replace('mxchat_channel_', '', $session_option);
4389		-
4390		- // Create a unique key for this specific message
4391		- $message_key = md5($session_id . $message_ts . $message_text);
4392		- $processed_messages = get_transient('mxchat_processed_messages_' . $session_id) ?: [];
4393		-
4394		- // Check if we've already processed this exact message
4395		- if (in_array($message_key, $processed_messages)) {
4396		- //error_log("Duplicate message detected for session $session_id");
4397		- return new WP_REST_Response(['ok' => true]);
4398		- }
4399		-
4400		- // Add to processed messages
4401		- $processed_messages[] = $message_key;
4402		- // Keep only last 50 messages per session
4403		- if (count($processed_messages) > 50) {
4404		- $processed_messages = array_slice($processed_messages, -50);
4405		- }
4406		- set_transient('mxchat_processed_messages_' . $session_id, $processed_messages, HOUR_IN_SECONDS);
4407		-
4408		- $slack_bot_token = $this->options['live_agent_bot_token'] ?? '';
4409		-
4410		- // Handle agent ending the chat — transfer back to AI
4411		- // Format: "!endchat" or "!endchat <custom message to user>"
4412		- if (preg_match('/^!endchat\b/i', trim($message_text))) {
4413		- update_option("mxchat_mode_{$session_id}", 'ai');
4414		-
4415		- // Extract custom message after !endchat, or use empty string
4416		- $custom_message = trim(preg_replace('/^!endchat\s*/i', '', trim($message_text)));
4417		-
4418		- // Send the agent's custom farewell message if provided
4419		- if (!empty($custom_message)) {
4420		- $this->mxchat_save_chat_message($session_id, 'agent', $custom_message);
4421		- }
4422		-
4423		- // Confirm in Slack channel
4424		- if (!empty($slack_bot_token)) {
4425		- wp_remote_post('https://slack.com/api/chat.postMessage', [
4426		- 'headers' => [
4427		- 'Content-Type' => 'application/json',
4428		- 'Authorization' => 'Bearer ' . $slack_bot_token
4429		- ],
4430		- 'body' => json_encode([
4431		- 'channel' => $channel_id,
4432		- 'text' => "✅ *Chat ended.* User has been transferred back to AI mode.",
4433		- 'mrkdwn' => true
4434		- ])
4435		- ]);
4436		- }
4437		-
4438		- return new WP_REST_Response(['ok' => true]);
4439		- }
4440		-
4441		- // Save the agent message
4442		- $this->mxchat_save_chat_message($session_id, 'agent', $message_text);
4443		-
4444		- // Send confirmation back to Slack (only once)
4445		- if (!empty($slack_bot_token)) {
4446		- // Use a transient to prevent duplicate confirmations
4447		- $confirm_key = 'mxchat_confirm_' . $message_key;
4448		- if (!get_transient($confirm_key)) {
4449		- wp_remote_post('https://slack.com/api/chat.postMessage', [
4450		- 'headers' => [
4451		- 'Content-Type' => 'application/json',
4452		- 'Authorization' => 'Bearer ' . $slack_bot_token
4453		- ],
4454		- 'body' => json_encode([
4455		- 'channel' => $channel_id,
4456		- 'text' => "✅ _Message sent to user_",
4457		- 'thread_ts' => $event['ts'] // Reply in thread
4458		- ])
4459		- ]);
4460		- // Set transient to prevent duplicate confirmations
4461		- set_transient($confirm_key, true, 300); // 5 minutes
4462		- }
4463		- }
4464		- }
4465		- }
4466		-
4467		- return new WP_REST_Response(['ok' => true]);
4468		-}
4469		-
4470		-// For the word upload handler
4471		-public function mxchat_handle_word_upload() {
4472		- // Delegate to word handler
4473		- $this->word_handler->mxchat_handle_word_upload();
4474		-}
4475		-
4476		-// For the word removal handler
4477		-public function mxchat_handle_word_remove() {
4478		- // Delegate to word handler
4479		- $this->word_handler->mxchat_handle_word_remove();
4480		-}
4481		-
4482		-// For the word status check
4483		-public function mxchat_check_word_status() {
4484		- // Delegate to word handler
4485		- $this->word_handler->mxchat_check_word_status();
4486		-}
4487		-
4488		-
4489		-private function mxchat_get_user_identifier() {
4490		- return MxChat_User::mxchat_get_user_identifier();
4491		-}
4492		-
4493		-private function mxchat_generate_embedding($text, $api_key) {
4494		- try {
4495		- // Get options and selected model
4496		- $options = get_option('mxchat_options');
4497		- $selected_model = $options['embedding_model'] ?? 'text-embedding-ada-002';
4498		-
4499		- // Determine endpoint and API key based on model
4500		- if (strpos($selected_model, 'voyage') === 0) {
4501		- $endpoint = 'https://api.voyageai.com/v1/embeddings';
4502		- $api_key = $options['voyage_api_key'] ?? '';
4503		-
4504		- // Check if Voyage API key is missing
4505		- if (empty($api_key)) {
4506		- //error_log('Voyage API key is missing');
4507		- return [
4508		- 'error' => esc_html__('Voyage AI API key is not configured', 'mxchat'),
4509		- 'error_code' => 'missing_voyage_api_key'
4510		- ];
4511		- }
4512		- } elseif (strpos($selected_model, 'gemini-embedding') === 0) {
4513		- $endpoint = 'https://generativelanguage.googleapis.com/v1beta/models/' . $selected_model . ':embedContent';
4514		- $api_key = $options['gemini_api_key'] ?? '';
4515		-
4516		- // Check if Gemini API key is missing
4517		- if (empty($api_key)) {
4518		- //error_log('Gemini API key is missing');
4519		- return [
4520		- 'error' => esc_html__('Google Gemini API key is not configured', 'mxchat'),
4521		- 'error_code' => 'missing_gemini_api_key'
4522		- ];
4523		- }
4524		- } else {
4525		- $endpoint = 'https://api.openai.com/v1/embeddings';
4526		- // Use the passed API key for OpenAI
4527		-
4528		- // Check if OpenAI API key is missing
4529		- if (empty($api_key)) {
4530		- //error_log('OpenAI API key is missing');
4531		- return [
4532		- 'error' => esc_html__('OpenAI API key is not configured', 'mxchat'),
4533		- 'error_code' => 'missing_openai_api_key'
4534		- ];
4535		- }
4536		- }
4537		-
4538		- // Check if text is empty
4539		- if (empty($text)) {
4540		- //error_log('Empty text provided for embedding generation');
4541		- return [
4542		- 'error' => esc_html__('No text provided for embedding generation', 'mxchat'),
4543		- 'error_code' => 'empty_embedding_text'
4544		- ];
4545		- }
4546		-
4547		- // Prepare request body based on provider
4548		- if (strpos($selected_model, 'gemini-embedding') === 0) {
4549		- // Gemini API format
4550		- $request_body = [
4551		- 'model' => 'models/' . $selected_model,
4552		- 'content' => [
4553		- 'parts' => [
4554		- ['text' => $text]
4555		- ]
4556		- ],
4557		- 'outputDimensionality' => 1536
4558		- ];
4559		-
4560		- // Prepare headers for Gemini (API key as query parameter)
4561		- $endpoint .= '?key=' . $api_key;
4562		- $headers = [
4563		- 'Content-Type' => 'application/json'
4564		- ];
4565		- } else {
4566		- // OpenAI/Voyage API format
4567		- $request_body = [
4568		- 'input' => $text,
4569		- 'model' => $selected_model
4570		- ];
4571		-
4572		- // Add output_dimension for voyage-3-large
4573		- if ($selected_model === 'voyage-3-large') {
4574		- $request_body['output_dimension'] = 2048;
4575		- }
4576		-
4577		- // Prepare headers for OpenAI/Voyage
4578		- $headers = [
4579		- 'Content-Type' => 'application/json',
4580		- 'Authorization' => 'Bearer ' . $api_key
4581		- ];
4582		- }
4583		-
4584		- // Prepare request arguments
4585		- $args = [
4586		- 'body' => wp_json_encode($request_body),
4587		- 'headers' => $headers,
4588	261	'timeout' => 60,
4589	262	'redirection' => 5,
4590	263	'blocking' => true,
4591	264	'httpversion' => '1.0',
		@@ -4590,1757 +263,85 @@
4590	263	'blocking' => true,
4591	264	'httpversion' => '1.0',
4592	265	'sslverify' => true,
4593	266	];
4594		-
4595		- // Make the request
	267	+
4596	268	$response = wp_remote_post($endpoint, $args);
4597		-
4598		- // Handle WordPress errors
	269	+
4599	270	if (is_wp_error($response)) {
4600		- $error_message = $response->get_error_message();
4601		- //error_log('Embedding Generation Error: ' . $error_message);
4602		- return [
4603		- 'error' => esc_html__('Connection error when generating embeddings: ', 'mxchat') . esc_html($error_message),
4604		- 'error_code' => 'embedding_connection_error'
4605		- ];
	271	+ return null;
4606	272	}
4607		-
4608		- // Check HTTP status code
4609		- $status_code = wp_remote_retrieve_response_code($response);
4610		- if ($status_code !== 200) {
4611		- $response_body = json_decode(wp_remote_retrieve_body($response), true);
4612		-
4613		- $error_message = isset($response_body['error']['message'])
4614		- ? $response_body['error']['message']
4615		- : 'HTTP Error ' . $status_code;
4616		-
4617		- $error_type = isset($response_body['error']['type'])
4618		- ? $response_body['error']['type']
4619		- : 'unknown';
4620		-
4621		- //error_log('Embedding API HTTP Error: ' . $status_code . ' - ' . $error_message);
4622		-
4623		- // Handle specific error types
4624		- switch ($error_type) {
4625		- case 'invalid_request_error':
4626		- if (strpos($error_message, 'API key') !== false) {
4627		- return [
4628		- 'error' => esc_html__('Invalid API key for embedding generation. Please check your API key configuration.', 'mxchat'),
4629		- 'error_code' => 'embedding_invalid_api_key'
4630		- ];
4631		- }
4632		- break;
4633		-
4634		- case 'authentication_error':
4635		- return [
4636		- 'error' => esc_html__('Authentication failed for embedding generation. Please check your API key.', 'mxchat'),
4637		- 'error_code' => 'embedding_auth_error'
4638		- ];
4639		-
4640		- case 'rate_limit_exceeded':
4641		- return [
4642		- 'error' => esc_html__('Rate limit exceeded for embedding generation. Please try again later.', 'mxchat'),
4643		- 'error_code' => 'embedding_rate_limit'
4644		- ];
4645		-
4646		- case 'quota_exceeded':
4647		- return [
4648		- 'error' => esc_html__('API quota exceeded for embedding generation. Please check your billing details.', 'mxchat'),
4649		- 'error_code' => 'embedding_quota_exceeded'
4650		- ];
4651		- }
4652		-
4653		- // Generic error fallback
4654		- return [
4655		- 'error' => esc_html__('Embedding API error - check embedding API key.: ', 'mxchat') . esc_html($error_message),
4656		- 'error_code' => 'embedding_api_error',
4657		- 'status_code' => $status_code
4658		- ];
4659		- }
4660		-
	273	+
4661	274	$response_body = json_decode(wp_remote_retrieve_body($response), true);
4662		-
4663		- // Handle different response formats based on provider
4664		- if (strpos($selected_model, 'gemini-embedding') === 0) {
4665		- // Gemini API response format
4666		- if (isset($response_body['embedding']['values']) && is_array($response_body['embedding']['values'])) {
4667		- return $response_body['embedding']['values'];
4668		- } else {
4669		- //error_log('Invalid Gemini embedding response: ' . wp_json_encode($response_body));
4670		- return [
4671		- 'error' => esc_html__('Received invalid embedding data from the Gemini API.', 'mxchat'),
4672		- 'error_code' => 'invalid_gemini_embedding_response'
4673		- ];
4674		- }
4675		- } else {
4676		- // OpenAI/Voyage API response format
4677		- if (isset($response_body['data'][0]['embedding']) && is_array($response_body['data'][0]['embedding'])) {
4678		- return $response_body['data'][0]['embedding'];
4679		- } else {
4680		- //error_log('Invalid embedding response: ' . wp_json_encode($response_body));
4681		- return [
4682		- 'error' => esc_html__('Received invalid embedding data from the API.', 'mxchat'),
4683		- 'error_code' => 'invalid_embedding_response'
4684		- ];
4685		- }
4686		- }
4687		- } catch (Exception $e) {
4688		- //error_log('Embedding Exception: ' . $e->getMessage());
4689		- return [
4690		- 'error' => esc_html__('System error when generating embeddings: ', 'mxchat') . esc_html($e->getMessage()),
4691		- 'error_code' => 'embedding_exception'
4692		- ];
4693		- }
4694		-}
4695	275
4696		-
4697		-private function mxchat_find_relevant_content($user_embedding, $bot_id = 'default', $user_query = '') {
4698		- //error_log("MXCHAT DEBUG: find_relevant_content called with bot_id: " . $bot_id);
4699		-
4700		- // Check for OpenAI Vector Store first (takes priority when enabled)
4701		- $bot_vectorstore_config = $this->get_bot_vectorstore_config($bot_id);
4702		-
4703		- if ($bot_vectorstore_config['use_vectorstore']) {
4704		- // Get current model to verify it's an OpenAI model
4705		- $bot_options = $this->get_bot_options($bot_id);
4706		- $mxchat_options = get_option('mxchat_options', array());
4707		- $current_options = !empty($bot_options) ? $bot_options : $mxchat_options;
4708		- $selected_model = $current_options['model'] ?? 'gpt-5.1-chat-latest';
4709		-
4710		- if ($this->is_openai_chat_model($selected_model)) {
4711		- //error_log("MXCHAT DEBUG: Using OpenAI Vector Store for knowledge retrieval");
4712		- return $this->find_relevant_content_openai_vectorstore($user_query, $bot_id, $bot_vectorstore_config);
	276	+ if (isset($response_body['data'][0]['embedding']) && is_array($response_body['data'][0]['embedding'])) {
	277	+ return $response_body['data'][0]['embedding'];
4713	278	} else {
4714		- //error_log("MXCHAT DEBUG: Vector Store enabled but model is not OpenAI (" . $selected_model . "), skipping Vector Store");
	279	+ return null;
4715	280	}
4716	281	}
4717	282
4718		- // Get bot-specific Pinecone configuration
4719		- $bot_pinecone_config = $this->get_bot_pinecone_config($bot_id);
4720		-
4721		- // Debug: Log the Pinecone configuration
4722		- //error_log("MXCHAT DEBUG: Pinecone config for bot '$bot_id':");
4723		- //error_log(" - use_pinecone: " . ($bot_pinecone_config['use_pinecone'] ? 'true' : 'false'));
4724		- //error_log(" - api_key: " . (empty($bot_pinecone_config['api_key']) ? 'EMPTY' : 'SET (hidden)'));
4725		- //error_log(" - host: " . ($bot_pinecone_config['host'] ?? 'NOT SET'));
4726		- //error_log(" - namespace: " . ($bot_pinecone_config['namespace'] ?? 'NOT SET'));
4727		-
4728		- // Determine whether to use Pinecone based on bot configuration
4729		- $use_pinecone = isset($bot_pinecone_config['use_pinecone']) ? $bot_pinecone_config['use_pinecone'] : false;
4730		-
4731		- //error_log("MXCHAT DEBUG: Using " . ($use_pinecone ? "Pinecone" : "WordPress Database") . " for knowledge retrieval");
4732		-
4733		- if ($use_pinecone) {
4734		- return $this->find_relevant_content_pinecone($user_embedding, $bot_id, $bot_pinecone_config);
4735		- } else {
4736		- return $this->find_relevant_content_wordpress($user_embedding, $bot_id);
4737		- }
4738		-}
4739		-
4740		-private function find_relevant_content_wordpress($user_embedding, $bot_id = 'default') {
	283	+private function mxchat_find_relevant_content($user_embedding) {
4741	284	global $wpdb;
4742	285	$system_prompt_table = $wpdb->prefix . 'mxchat_system_prompt_content';
4743		- // Initialize similarity analysis storage
4744		- $this->last_similarity_analysis = [
4745		- 'knowledge_base_type' => 'WordPress Database',
4746		- 'bot_id' => $bot_id,
4747		- 'top_matches' => [],
4748		- 'threshold_used' => 0,
4749		- 'total_checked' => 0
4750		- ];
4751	286
4752		- // NEW: Initialize valid URLs array
4753		- $valid_urls = [];
	287	+ // Define a cache key for embeddings
	288	+ $cache_key = 'mxchat_system_prompt_embeddings';
4754	289
4755		- // Get bot-specific options for similarity threshold
4756		- $bot_options = $this->get_bot_options($bot_id);
4757		- $current_options = !empty($bot_options) ? $bot_options : $this->options;
	290	+ // Attempt to get the embeddings from the cache
	291	+ $embeddings = wp_cache_get($cache_key, 'mxchat_system_prompts');
4758	292
4759		- // Get knowledge manager instance for role checking
4760		- $knowledge_manager = MxChat_Knowledge_Manager::get_instance();
	293	+ if ($embeddings === false) {
	294	+ // Cache miss, query the database and cache the results
	295	+ $query = "SELECT id, embedding_vector FROM {$system_prompt_table}";
	296	+ $embeddings = $wpdb->get_results($query);
4761	297
4762		- // Get base similarity threshold from bot options or default options
4763		- $similarity_threshold = isset($current_options['similarity_threshold'])
4764		- ? ((int) $current_options['similarity_threshold']) / 100
4765		- : 0.35;
4766		- $this->last_similarity_analysis['threshold_used'] = $similarity_threshold;
	298	+ if ($embeddings === null || empty($embeddings)) {
	299	+ error_log("No embeddings found in the database.");
	300	+ return null; // Return null to handle no embeddings gracefully
	301	+ }
4767	302
4768		- // Precompute bot_filter once, outside the streaming loop
4769		- $bot_filter = '';
4770		- if ($bot_id !== 'default') {
4771		- $column_exists = $wpdb->get_var("SHOW COLUMNS FROM {$system_prompt_table} LIKE 'bot_metadata'");
4772		- if ($column_exists) {
4773		- $bot_filter = $wpdb->prepare(" AND (bot_metadata = %s OR bot_metadata IS NULL OR bot_metadata = '')", $bot_id);
4774		- }
	303	+ // Cache the results if successful
	304	+ wp_cache_set($cache_key, $embeddings, 'mxchat_system_prompts', 3600); // Cache for 1 hour
4775	305	}
4776	306
4777		- // ===== STREAMING TOP-K PASS =====
4778		- // Stream rows in small batches, compute cosine similarity per row, and keep only:
4779		- // - top 10 by raw similarity (for the testing/debug display panel)
4780		- // - candidates above threshold with access (capped) for context assembly
4781		- // This bounds peak memory regardless of knowledge base size and avoids loading
4782		- // article_content for every row. article_content is fetched in Phase 2 for winners only.
4783		- $batch_size = 250;
4784		- $max_candidates = 200; // safety cap, well above rag_sources_limit * max_chunks_per_source
4785		- $top_display = [];
4786		- $candidates = [];
4787		- $total_checked = 0;
4788		- $offset = 0;
	307	+ $most_relevant_id = null;
	308	+ $highest_similarity = -INF;
4789	309
4790		- do {
4791		- $batch = $wpdb->get_results($wpdb->prepare(
4792		- "SELECT id, embedding_vector, source_url, role_restriction
4793		- FROM {$system_prompt_table}
4794		- WHERE 1=1 {$bot_filter}
4795		- LIMIT %d OFFSET %d",
4796		- $batch_size,
4797		- $offset
4798		- ));
	310	+ foreach ($embeddings as $embedding) {
	311	+ $database_embedding = maybe_unserialize($embedding->embedding_vector);
4799	312
4800		- if (empty($batch)) {
4801		- break;
4802		- }
	313	+ // Debugging: Log the embeddings
	314	+ // if (!is_array($database_embedding)) {
	315	+ // error_log("Invalid database embedding format for ID {$embedding->id}: " . print_r($database_embedding, true));
	316	+ // continue;
	317	+ // }
4803	318
4804		- foreach ($batch as $row) {
4805		- $database_embedding = $row->embedding_vector
4806		- ? unserialize($row->embedding_vector, ['allowed_classes' => false])
4807		- : null;
4808		-
4809		- if (!is_array($database_embedding) || !is_array($user_embedding)) {
4810		- unset($database_embedding);
4811		- continue;
4812		- }
4813		-
	319	+ if (is_array($user_embedding)) {
4814	320	$similarity = $this->mxchat_calculate_cosine_similarity($user_embedding, $database_embedding);
4815		- unset($database_embedding);
4816	321
4817		- $role_restriction = $row->role_restriction ?? 'public';
4818		- $has_access = $knowledge_manager->mxchat_user_has_content_access($role_restriction);
4819		- $source_url = $row->source_url ?? '';
	322	+ // Debugging: Log the similarity score
	323	+ // error_log("Calculated similarity for ID {$embedding->id}: {$similarity}");
4820	324
4821		- // Maintain top 10 display buffer (insert-if-beats-worst)
4822		- if (count($top_display) < 10) {
4823		- $top_display[] = [
4824		- 'id' => $row->id,
4825		- 'similarity' => $similarity,
4826		- 'source_url' => $source_url,
4827		- 'role_restriction' => $role_restriction,
4828		- 'has_access' => $has_access,
4829		- ];
4830		- usort($top_display, function ($a, $b) {
4831		- return $b['similarity'] <=> $a['similarity'];
4832		- });
4833		- } elseif ($similarity > $top_display[9]['similarity']) {
4834		- $top_display[9] = [
4835		- 'id' => $row->id,
4836		- 'similarity' => $similarity,
4837		- 'source_url' => $source_url,
4838		- 'role_restriction' => $role_restriction,
4839		- 'has_access' => $has_access,
4840		- ];
4841		- usort($top_display, function ($a, $b) {
4842		- return $b['similarity'] <=> $a['similarity'];
4843		- });
	325	+ if ($similarity > $highest_similarity) {
	326	+ $highest_similarity = $similarity;
	327	+ $most_relevant_id = $embedding->id;
4844	328	}
4845		-
4846		- // Track candidates for context assembly (above threshold + has access)
4847		- if ($similarity >= $similarity_threshold && $has_access) {
4848		- $candidates[] = [
4849		- 'id' => $row->id,
4850		- 'similarity' => $similarity,
4851		- 'source_url' => $source_url,
4852		- ];
4853		- }
4854		-
4855		- $total_checked++;
4856		- }
4857		-
4858		- unset($batch);
4859		-
4860		- // Trim candidates periodically to cap memory during long scans
4861		- if (count($candidates) > $max_candidates) {
4862		- usort($candidates, function ($a, $b) {
4863		- return $b['similarity'] <=> $a['similarity'];
4864		- });
4865		- $candidates = array_slice($candidates, 0, $max_candidates);
4866		- }
4867		-
4868		- $offset += $batch_size;
4869		- } while (true);
4870		-
4871		- if ($total_checked === 0) {
4872		- $this->current_valid_urls = [];
4873		- return '';
4874		- }
4875		-
4876		- // Final candidates sort (best first)
4877		- if (count($candidates) > 1) {
4878		- usort($candidates, function ($a, $b) {
4879		- return $b['similarity'] <=> $a['similarity'];
4880		- });
4881		- }
4882		-
4883		- // ===== PHASE 2: FETCH ARTICLE CONTENT ONLY FOR WINNERS =====
4884		- // Gather unique IDs we actually need (top_display + candidates) and pull
4885		- // article_content in bounded IN() batches. This avoids loading content for
4886		- // every row during the similarity scan.
4887		- $needed_ids = [];
4888		- foreach ($top_display as $item) {
4889		- $needed_ids[$item['id']] = true;
4890		- }
4891		- foreach ($candidates as $item) {
4892		- $needed_ids[$item['id']] = true;
4893		- }
4894		- $needed_ids = array_keys($needed_ids);
4895		-
4896		- $content_map = [];
4897		- if (!empty($needed_ids)) {
4898		- foreach (array_chunk($needed_ids, 250) as $chunk_ids) {
4899		- $placeholders = implode(',', array_fill(0, count($chunk_ids), '%d'));
4900		- $rows = $wpdb->get_results($wpdb->prepare(
4901		- "SELECT id, article_content FROM {$system_prompt_table} WHERE id IN ($placeholders)",
4902		- ...$chunk_ids
4903		- ));
4904		- foreach ($rows as $r) {
4905		- $content_map[$r->id] = $r->article_content;
4906		- }
4907		- unset($rows);
4908		- }
4909		- }
4910		-
4911		- // Build the all_similarities display array from the top 10
4912		- $all_similarities = [];
4913		- foreach ($top_display as $item) {
4914		- $article_content_for_parse = $content_map[$item['id']] ?? '';
4915		- $parsed_for_display = MxChat_Chunker::parse_stored_chunk($article_content_for_parse);
4916		- $is_chunk = $parsed_for_display['is_chunked'];
4917		- $chunk_meta = $parsed_for_display['metadata'];
4918		-
4919		- if (!empty($item['source_url']) && $item['source_url'] !== '#') {
4920		- $source_display = $item['source_url'];
4921	329	} else {
4922		- $content_preview = strip_tags($article_content_for_parse);
4923		- $content_preview = preg_replace('/\s+/', ' ', $content_preview);
4924		- $source_display = substr(trim($content_preview), 0, 50) . '...';
	330	+ // error_log("User embedding is not an array. Embedding data: " . print_r($user_embedding, true));
4925	331	}
4926		-
4927		- $all_similarities[] = [
4928		- 'document_id' => $item['id'],
4929		- 'similarity' => $item['similarity'],
4930		- 'similarity_percentage' => round($item['similarity'] * 100, 2),
4931		- 'above_threshold' => $item['similarity'] >= $similarity_threshold,
4932		- 'source_display' => $source_display,
4933		- 'content_preview' => substr(strip_tags($parsed_for_display['text'] ?? ''), 0, 100) . '...',
4934		- 'used_for_context' => false,
4935		- 'role_restriction' => $item['role_restriction'],
4936		- 'has_access' => $item['has_access'],
4937		- 'filtered_out' => !$item['has_access'],
4938		- 'is_chunk' => $is_chunk,
4939		- 'chunk_index' => $is_chunk ? ($chunk_meta['chunk_index'] ?? 0) : null,
4940		- 'total_chunks' => $is_chunk ? ($chunk_meta['total_chunks'] ?? 1) : null
4941		- ];
4942	332	}
4943	333
4944		- // Build url_groups from candidates for chunk reassembly
4945		- $url_groups = array();
4946		- foreach ($candidates as $cand) {
4947		- $article_content = $content_map[$cand['id']] ?? '';
4948		- $parsed = MxChat_Chunker::parse_stored_chunk($article_content);
4949		- $is_chunked = $parsed['is_chunked'];
4950		- $chunk_index = $parsed['metadata']['chunk_index'] ?? 0;
4951		- $text_content = $parsed['text'];
4952		-
4953		- $source_url = $cand['source_url'];
4954		- $group_key = !empty($source_url) ? $source_url : '_manual_' . $cand['id'];
4955		-
4956		- if (!isset($url_groups[$group_key])) {
4957		- $url_groups[$group_key] = array(
4958		- 'source_url' => $source_url,
4959		- 'best_score' => 0,
4960		- 'is_chunked' => $is_chunked,
4961		- 'chunks' => array(),
4962		- 'single_text' => '',
4963		- 'single_id' => null
4964		- );
4965		- }
4966		-
4967		- if ($cand['similarity'] > $url_groups[$group_key]['best_score']) {
4968		- $url_groups[$group_key]['best_score'] = $cand['similarity'];
4969		- }
4970		-
4971		- if ($is_chunked) {
4972		- $url_groups[$group_key]['is_chunked'] = true;
4973		- $url_groups[$group_key]['chunks'][] = array(
4974		- 'id' => $cand['id'],
4975		- 'score' => $cand['similarity'],
4976		- 'chunk_index' => $chunk_index,
4977		- 'text' => $text_content
4978		- );
4979		- } else {
4980		- $url_groups[$group_key]['single_text'] = $text_content;
4981		- $url_groups[$group_key]['single_id'] = $cand['id'];
4982		- }
	334	+ if ($most_relevant_id !== null) {
	335	+ // Fetch content with product links
	336	+ return $this->fetch_content_with_product_links($most_relevant_id);
4983	337	}
4984	338
4985		- // Sort ALL similarities for testing display (highest first)
4986		- usort($all_similarities, function ($a, $b) {
4987		- return $b['similarity'] <=> $a['similarity'];
4988		- });
4989		-
4990		- // Sort URL groups by best score (highest first)
4991		- uasort($url_groups, function($a, $b) {
4992		- return $b['best_score'] <=> $a['best_score'];
4993		- });
4994		-
4995		- // Get RAG sources limit from options (default 6, min 3, max 10)
4996		- $rag_sources_limit = isset($current_options['rag_sources_limit']) ? intval($current_options['rag_sources_limit']) : 3;
4997		- if ($rag_sources_limit < 3) $rag_sources_limit = 3;
4998		- if ($rag_sources_limit > 10) $rag_sources_limit = 10;
4999		-
5000		- // Take top N unique URLs based on user setting
5001		- $top_urls = array_slice($url_groups, 0, $rag_sources_limit, true);
5002		-
5003		- // Track which document IDs are used for context
5004		- $used_document_ids = [];
5005		- foreach ($top_urls as $group) {
5006		- if ($group['is_chunked']) {
5007		- foreach ($group['chunks'] as $chunk) {
5008		- $used_document_ids[] = $chunk['id'];
5009		- }
5010		- } elseif ($group['single_id']) {
5011		- $used_document_ids[] = $group['single_id'];
5012		- }
5013		- }
5014		-
5015		- // Update the all_similarities array to mark which were actually used
5016		- foreach ($all_similarities as &$similarity_item) {
5017		- $similarity_item['used_for_context'] = in_array($similarity_item['document_id'], $used_document_ids);
5018		- }
5019		-
5020		- // Store top 10 for testing panel
5021		- $this->last_similarity_analysis['top_matches'] = array_slice($all_similarities, 0, 10);
5022		- $this->last_similarity_analysis['total_checked'] = $total_checked;
5023		-
5024		- // Initialize final content
5025		- $content = '';
5026		- $matches_used = 0;
5027		- $total_chunks_used = 0;
5028		- $max_total_chunks = isset($current_options['rag_chunks_limit']) ? intval($current_options['rag_chunks_limit']) : 15;
5029		- if ($max_total_chunks < 8) $max_total_chunks = 8;
5030		- if ($max_total_chunks > 20) $max_total_chunks = 20;
5031		- $max_chunks_per_source = 5; // Cap per individual source to limit token usage
5032		-
5033		- // Check if citation links are enabled (default to 'on' for backwards compatibility)
5034		- // Use fresh options to ensure we get the latest setting value
5035		- $fresh_options = get_option('mxchat_options', []);
5036		- $citation_links_enabled = isset($fresh_options['citation_links_toggle']) ? ($fresh_options['citation_links_toggle'] === 'on') : true;
5037		-
5038		- // Build content from top sources
5039		- foreach ($top_urls as $group_key => $group) {
5040		- $source_url = $group['source_url']; // Use actual source_url, not the group key
5041		-
5042		- // Stop if we've hit the total chunk limit
5043		- if ($total_chunks_used >= $max_total_chunks) {
5044		- break;
5045		- }
5046		-
5047		- $full_text = '';
5048		- $chunks_in_this_source = 1; // Default for non-chunked content
5049		-
5050		- if ($group['is_chunked']) {
5051		- // Calculate how many chunks we can still use (respect both total and per-source caps)
5052		- $chunks_remaining = min($max_chunks_per_source, $max_total_chunks - $total_chunks_used);
5053		-
5054		- // Fetch chunks for this URL with limit
5055		- $full_text = $this->reassemble_chunks_from_wordpress($source_url, $chunks_remaining, $chunks_in_this_source);
5056		-
5057		- // If fetching all chunks fails, fall back to matched chunks
5058		- if (empty($full_text)) {
5059		- // Sort matched chunks by index and concatenate
5060		- usort($group['chunks'], function($a, $b) {
5061		- return $a['chunk_index'] <=> $b['chunk_index'];
5062		- });
5063		-
5064		- $chunk_texts = array();
5065		- $chunks_in_this_source = 0;
5066		- foreach ($group['chunks'] as $chunk) {
5067		- if ($total_chunks_used + $chunks_in_this_source >= $max_total_chunks) {
5068		- break;
5069		- }
5070		- $chunk_texts[] = $chunk['text'];
5071		- $chunks_in_this_source++;
5072		- }
5073		- $full_text = implode("\n\n", $chunk_texts);
5074		- }
5075		- } else {
5076		- $full_text = $group['single_text'];
5077		- $chunks_in_this_source = 1;
5078		- }
5079		-
5080		- if (!empty($full_text)) {
5081		- // Strip URLs from content if citation links are disabled
5082		- if (!$citation_links_enabled) {
5083		- $full_text = preg_replace('#\bhttps?://[^\s<>"\']+#i', '', $full_text);
5084		- $full_text = preg_replace('/\s+/', ' ', trim($full_text)); // Clean up extra spaces
5085		- }
5086		-
5087		- // Use numbered reference for URL-based entries, plain info label for manual entries
5088		- // Manual entries are stored with an internal mxchat:// placeholder URL — never expose them as citations
5089		- if (!empty($source_url) && $source_url !== '#' && strpos($source_url, 'mxchat://') !== 0) {
5090		- $matches_used++;
5091		- $content .= "## Reference " . $matches_used . " ##\n";
5092		- $content .= $full_text . "\n\n";
5093		-
5094		- // Only include citation URLs if citation links are enabled
5095		- if ($citation_links_enabled) {
5096		- $valid_urls[] = $source_url;
5097		- $content .= "URL: " . $source_url . "\n\n";
5098		- }
5099		- } else {
5100		- // Manual entry — no reference number, no citation
5101		- $content .= "## Information ##\n";
5102		- $content .= $full_text . "\n\n";
5103		- }
5104		-
5105		- // Extract any URLs from the text content itself (only if citation links enabled)
5106		- if ($citation_links_enabled) {
5107		- preg_match_all(
5108		- '#\bhttps?://[^\s<>"\']+#i',
5109		- $full_text,
5110		- $content_urls
5111		- );
5112		- if (!empty($content_urls[0])) {
5113		- $valid_urls = array_merge($valid_urls, $content_urls[0]);
5114		- }
5115		- }
5116		-
5117		- $total_chunks_used += $chunks_in_this_source;
5118		- }
5119		- }
5120		-
5121		- // NEW: Store unique valid URLs for validation
5122		- $this->current_valid_urls = array_unique($valid_urls);
5123		-
5124		- // Store sources and chunks counts for testing/transcript display
5125		- $this->last_similarity_analysis['sources_used'] = $matches_used;
5126		- $this->last_similarity_analysis['total_chunks_used'] = $total_chunks_used;
5127		-
5128		- // Allow add-ons to act on similarity results (e.g. WooCommerce product card display)
5129		- do_action('mxchat_similarity_results', $this->last_similarity_analysis['top_matches'], $bot_id);
5130		-
5131		- // Add response guidelines
5132		- if (empty($top_urls)) {
5133		- $content = "No reference information was found for this query.\n\n";
5134		- } else {
5135		- // Build response guidelines based on citation links setting
5136		- $content .= "\n## Response Guidelines ##\n" .
5137		- "You are an AI Chatbot. Answer naturally and helpfully using only the information from the references above. " .
5138		- "Be conversational and friendly, but never mention your knowledge base or training data. " .
5139		- "If you don't have specific information or are uncertain about any details, it's always " .
5140		- "better to honestly say you don't know rather than making up or guessing at answers. " .
5141		- "When information is incomplete, let them know you are unsure.\n\n";
5142		-
5143		- // Only add hyperlink instructions if citation links are enabled
5144		- if ($citation_links_enabled) {
5145		- $content .= "CRITICAL: When creating hyperlinks, always use proper markdown format with descriptive text: " .
5146		- "[descriptive text](url). NEVER use empty brackets like [](url). The text in brackets must describe what the link is about. " .
5147		- "Only cite references that have a URL. Do not cite or add source labels to Information sections that have no URL.";
5148		- } else {
5149		- $content .= "IMPORTANT: Do not include any citation links, source URLs, or hyperlinks in your responses. " .
5150		- "Simply provide helpful answers based on the reference information without citing sources.";
5151		- }
5152		- }
5153		-
5154		- return trim($content);
	339	+ error_log("No relevant content found. Most relevant ID was null.");
	340	+ return null; // Return null if no relevant content is found
5155	341	}
5156	342
5157		-/**
5158		- * Fetch and reassemble chunks for a URL from WordPress database
5159		- *
5160		- * @param string $source_url The source URL to fetch chunks for
5161		- * @param int $max_chunks Maximum number of chunks to return (0 = unlimited)
5162		- * @param int &$chunk_count Reference to store the actual number of chunks returned
5163		- * @return string Reassembled content from chunks
5164		- */
5165		-private function reassemble_chunks_from_wordpress($source_url, $max_chunks = 0, &$chunk_count = 0) {
5166		- global $wpdb;
5167		- $table = $wpdb->prefix . 'mxchat_system_prompt_content';
5168	343
5169		- // Fetch all rows with this source_url
5170		- $rows = $wpdb->get_results($wpdb->prepare(
5171		- "SELECT article_content FROM {$table}
5172		- WHERE source_url = %s
5173		- ORDER BY id ASC",
5174		- $source_url
5175		- ));
5176		-
5177		- if (empty($rows)) {
5178		- $chunk_count = 0;
5179		- return '';
5180		- }
5181		-
5182		- // Parse and sort chunks by index
5183		- $chunks = array();
5184		- foreach ($rows as $row) {
5185		- $parsed = MxChat_Chunker::parse_stored_chunk($row->article_content);
5186		-
5187		- if ($parsed['is_chunked']) {
5188		- $chunk_index = $parsed['metadata']['chunk_index'] ?? 0;
5189		- $chunks[$chunk_index] = $parsed['text'];
5190		- } else {
5191		- // Non-chunked content - just return it
5192		- $chunks[] = $parsed['text'];
5193		- }
5194		- }
5195		-
5196		- // Sort by chunk index
5197		- ksort($chunks);
5198		-
5199		- // Apply chunk limit if specified
5200		- if ($max_chunks > 0 && count($chunks) > $max_chunks) {
5201		- $chunks = array_slice($chunks, 0, $max_chunks, true);
5202		- }
5203		-
5204		- // Store actual chunk count
5205		- $chunk_count = count($chunks);
5206		-
5207		- // Reassemble content
5208		- return implode("\n\n", $chunks);
5209		-}
5210		-
5211		-private function find_relevant_content_pinecone($user_embedding, $bot_id = 'default', $bot_config = null) {
5212		- global $wpdb;
5213		-
5214		- //error_log("MXCHAT DEBUG: find_relevant_content_pinecone called");
5215		- //error_log(" - bot_id: " . $bot_id);
5216		- //error_log(" - user_embedding is array: " . (is_array($user_embedding) ? 'yes' : 'no'));
5217		- //error_log(" - user_embedding count: " . (is_array($user_embedding) ? count($user_embedding) : 'N/A'));
5218		-
5219		- // Use bot-specific config or fall back to default
5220		- if ($bot_config === null) {
5221		- $bot_config = $this->get_bot_pinecone_config($bot_id);
5222		- }
5223		-
5224		- $api_key = $bot_config['api_key'] ?? '';
5225		- $host = $bot_config['host'] ?? '';
5226		- $namespace = $bot_config['namespace'] ?? '';
5227		-
5228		- //error_log("MXCHAT DEBUG: Pinecone query parameters:");
5229		- //error_log(" - API Key: " . (empty($api_key) ? 'EMPTY - ERROR!' : 'Present (length: ' . strlen($api_key) . ')'));
5230		- //error_log(" - Host: " . (empty($host) ? 'EMPTY - ERROR!' : $host));
5231		- //error_log(" - Namespace: " . (empty($namespace) ? 'EMPTY (will use default)' : $namespace));
5232		-
5233		- // Initialize similarity analysis storage
5234		- $this->last_similarity_analysis = [
5235		- 'knowledge_base_type' => 'Pinecone',
5236		- 'bot_id' => $bot_id,
5237		- 'namespace' => $namespace,
5238		- 'top_matches' => [],
5239		- 'threshold_used' => 0,
5240		- 'total_checked' => 0
5241		- ];
5242		-
5243		- // NEW: Initialize valid URLs array
5244		- $valid_urls = [];
5245		-
5246		- if (empty($host) || empty($api_key)) {
5247		- //error_log("MXCHAT DEBUG ERROR: Missing Pinecone host or API key!");
5248		- //error_log(" - Host empty: " . (empty($host) ? 'YES' : 'NO'));
5249		- //error_log(" - API key empty: " . (empty($api_key) ? 'YES' : 'NO'));
5250		- // Store empty array for valid URLs since we can't proceed
5251		- $this->current_valid_urls = [];
5252		- return '';
5253		- }
5254		-
5255		- // Get knowledge manager instance for role checking
5256		- $knowledge_manager = MxChat_Knowledge_Manager::get_instance();
5257		-
5258		- // Get the similarity threshold from the bot options or main options
5259		- $bot_options = $this->get_bot_options($bot_id);
5260		- $current_options = !empty($bot_options) ? $bot_options : get_option('mxchat_options', []);
5261		-
5262		- $similarity_threshold = isset($current_options['similarity_threshold'])
5263		- ? ((int) $current_options['similarity_threshold']) / 100
5264		- : 0.35;
5265		-
5266		- $this->last_similarity_analysis['threshold_used'] = $similarity_threshold;
5267		-
5268		- // Prepare the query request for Pinecone
5269		- $api_endpoint = "https://{$host}/query";
5270		-
5271		- $request_body = array(
5272		- 'vector' => $user_embedding,
5273		- 'topK' => 50, // Increased for chunked content grouping - need more candidates to find top N unique URLs
5274		- 'includeMetadata' => true,
5275		- 'includeValues' => true
5276		- );
5277		-
5278		- // Add namespace if specified for this bot
5279		- if (!empty($namespace)) {
5280		- $request_body['namespace'] = $namespace;
5281		- }
5282		-
5283		- //error_log("MXCHAT DEBUG: About to call Pinecone API");
5284		- //error_log(" - Endpoint: " . $api_endpoint);
5285		- //error_log(" - Namespace in request: " . (!empty($namespace) ? $namespace : 'NOT SET'));
5286		-
5287		- $response = wp_remote_post($api_endpoint, array(
5288		- 'headers' => array(
5289		- 'Api-Key' => $api_key,
5290		- 'accept' => 'application/json',
5291		- 'content-type' => 'application/json'
5292		- ),
5293		- 'body' => wp_json_encode($request_body),
5294		- 'timeout' => 30
5295		- ));
5296		-
5297		- if (is_wp_error($response)) {
5298		- //error_log("MXCHAT DEBUG ERROR: WP Error in Pinecone request: " . $response->get_error_message());
5299		- // Store empty array for valid URLs
5300		- $this->current_valid_urls = [];
5301		- return '';
5302		- }
5303		-
5304		- $response_code = wp_remote_retrieve_response_code($response);
5305		- //error_log("MXCHAT DEBUG: Pinecone response code: " . $response_code);
5306		-
5307		- if ($response_code !== 200) {
5308		- $response_body = wp_remote_retrieve_body($response);
5309		- //error_log("MXCHAT DEBUG ERROR: Pinecone API error response: " . substr($response_body, 0, 500));
5310		- // Store empty array for valid URLs
5311		- $this->current_valid_urls = [];
5312		- return '';
5313		- }
5314		-
5315		- // ADD DETAILED DEBUG SECTION HERE
5316		- $response_body = wp_remote_retrieve_body($response);
5317		- //error_log("MXCHAT DEBUG: Raw Pinecone response length: " . strlen($response_body));
5318		-
5319		- $results = json_decode($response_body, true);
5320		-
5321		- if (json_last_error() !== JSON_ERROR_NONE) {
5322		- //error_log("MXCHAT DEBUG ERROR: JSON decode error: " . json_last_error_msg());
5323		- //error_log("MXCHAT DEBUG: First 500 chars of response: " . substr($response_body, 0, 500));
5324		- // Store empty array for valid URLs
5325		- $this->current_valid_urls = [];
5326		- return '';
5327		- }
5328		-
5329		- //error_log("MXCHAT DEBUG: Pinecone response structure:");
5330		- //error_log(" - Has 'matches' key: " . (isset($results['matches']) ? 'yes' : 'no'));
5331		- //error_log(" - Has 'namespace' key: " . (isset($results['namespace']) ? 'yes (' . $results['namespace'] . ')' : 'no'));
5332		-
5333		- if (empty($results['matches'])) {
5334		- //error_log("MXCHAT DEBUG: No matches found in Pinecone response");
5335		- //error_log("MXCHAT DEBUG: Response keys: " . implode(', ', array_keys($results)));
5336		- // Store empty array for valid URLs
5337		- $this->current_valid_urls = [];
5338		- return '';
5339		- }
5340		-
5341		- //error_log("MXCHAT DEBUG: Found " . count($results['matches']) . " matches in Pinecone");
5342		-
5343		- // Log first match details for debugging
5344		- if (!empty($results['matches'][0])) {
5345		- $first_match = $results['matches'][0];
5346		- //error_log("MXCHAT DEBUG: First match details:");
5347		- //error_log(" - Score: " . ($first_match['score'] ?? 'no score'));
5348		- //error_log(" - Has metadata: " . (isset($first_match['metadata']) ? 'yes' : 'no'));
5349		- if (isset($first_match['metadata'])) {
5350		- //error_log(" - Metadata keys: " . implode(', ', array_keys($first_match['metadata'])));
5351		- }
5352		- }
5353		-
5354		- // Initialize the final content
5355		- $content = '';
5356		- $matches_used = 0;
5357		- $matches_used_for_context = [];
5358		- $total_chunks_used = 0;
5359		- $max_total_chunks = isset($current_options['rag_chunks_limit']) ? intval($current_options['rag_chunks_limit']) : 15;
5360		- if ($max_total_chunks < 8) $max_total_chunks = 8;
5361		- if ($max_total_chunks > 20) $max_total_chunks = 20;
5362		- $max_chunks_per_source = 5; // Cap per individual source to limit token usage
5363		-
5364		- // Check if citation links are enabled (default to 'on' for backwards compatibility)
5365		- // Use fresh options to ensure we get the latest setting value
5366		- $fresh_options = get_option('mxchat_options', []);
5367		- $citation_links_enabled = isset($fresh_options['citation_links_toggle']) ? ($fresh_options['citation_links_toggle'] === 'on') : true;
5368		-
5369		- // NEW CHUNKING LOGIC: Group results by source_url for chunk reassembly
5370		- $url_groups = array();
5371		-
5372		- foreach ($results['matches'] as $index => $match) {
5373		- // Skip if similarity is below threshold
5374		- if ($match['score'] < $similarity_threshold) {
5375		- continue;
5376		- }
5377		-
5378		- $metadata = $match['metadata'] ?? array();
5379		- $source_url = $metadata['source_url'] ?? '';
5380		- $match_id = $match['id'] ?? '';
5381		-
5382		- // LAZY ROLE CHECK: Only check role for content we're actually considering
5383		- $role_restriction = $this->get_single_vector_role($match_id, $metadata);
5384		- $has_access = $knowledge_manager->mxchat_user_has_content_access($role_restriction);
5385		-
5386		- // Skip if user doesn't have access
5387		- if (!$has_access) {
5388		- continue;
5389		- }
5390		-
5391		- // Use a unique key for manual entries without a source URL
5392		- $group_key = !empty($source_url) ? $source_url : '_manual_' . $match_id;
5393		-
5394		- // Group by source URL (or unique key for manual entries)
5395		- if (!isset($url_groups[$group_key])) {
5396		- $url_groups[$group_key] = array(
5397		- 'source_url' => $source_url,
5398		- 'best_score' => 0,
5399		- 'is_chunked' => isset($metadata['is_chunked']) && $metadata['is_chunked'],
5400		- 'chunks' => array(),
5401		- 'single_text' => ''
5402		- );
5403		- }
5404		-
5405		- // Track best score for this group
5406		- if ($match['score'] > $url_groups[$group_key]['best_score']) {
5407		- $url_groups[$group_key]['best_score'] = $match['score'];
5408		- }
5409		-
5410		- // Store chunk info or single text
5411		- if ($url_groups[$group_key]['is_chunked']) {
5412		- $url_groups[$group_key]['chunks'][] = array(
5413		- 'id' => $match_id,
5414		- 'score' => $match['score'],
5415		- 'chunk_index' => $metadata['chunk_index'] ?? 0,
5416		- 'text' => $metadata['text'] ?? ''
5417		- );
5418		- } else {
5419		- // Non-chunked content - just store the text
5420		- $url_groups[$group_key]['single_text'] = $metadata['text'] ?? '';
5421		- $url_groups[$group_key]['single_id'] = $match_id;
5422		- }
5423		- }
5424		-
5425		- // Sort URL groups by best score (highest first)
5426		- uasort($url_groups, function($a, $b) {
5427		- return $b['best_score'] <=> $a['best_score'];
5428		- });
5429		-
5430		- // Get RAG sources limit from options (default 6, min 3, max 10)
5431		- $rag_sources_limit = isset($current_options['rag_sources_limit']) ? intval($current_options['rag_sources_limit']) : 3;
5432		- if ($rag_sources_limit < 3) $rag_sources_limit = 3;
5433		- if ($rag_sources_limit > 10) $rag_sources_limit = 10;
5434		-
5435		- // Take top N unique URLs based on user setting
5436		- $top_urls = array_slice($url_groups, 0, $rag_sources_limit, true);
5437		-
5438		- // Track which match IDs are actually used for context
5439		- foreach ($top_urls as $group) {
5440		- if ($group['is_chunked']) {
5441		- foreach ($group['chunks'] as $chunk) {
5442		- $matches_used_for_context[] = $chunk['id'];
5443		- }
5444		- } elseif (!empty($group['single_id'])) {
5445		- $matches_used_for_context[] = $group['single_id'];
5446		- }
5447		- }
5448		-
5449		- // Build content from top sources
5450		- foreach ($top_urls as $group_key => $group) {
5451		- $source_url = $group['source_url']; // Use actual source_url, not the group key
5452		-
5453		- // Stop if we've hit the total chunk limit
5454		- if ($total_chunks_used >= $max_total_chunks) {
5455		- break;
5456		- }
5457		-
5458		- $full_text = '';
5459		- $chunks_in_this_source = 1; // Default for non-chunked content
5460		-
5461		- if ($group['is_chunked']) {
5462		- // Calculate how many chunks we can still use (respect both total and per-source caps)
5463		- $chunks_remaining = min($max_chunks_per_source, $max_total_chunks - $total_chunks_used);
5464		-
5465		- // Fetch chunks for this URL with limit
5466		- $full_text = $this->reassemble_chunks_from_pinecone($source_url, $bot_config, $chunks_remaining, $chunks_in_this_source);
5467		-
5468		- // If fetching all chunks fails, fall back to matched chunks
5469		- if (empty($full_text)) {
5470		- // Sort matched chunks by index and concatenate
5471		- usort($group['chunks'], function($a, $b) {
5472		- return $a['chunk_index'] <=> $b['chunk_index'];
5473		- });
5474		-
5475		- $chunk_texts = array();
5476		- $chunks_in_this_source = 0;
5477		- foreach ($group['chunks'] as $chunk) {
5478		- if ($total_chunks_used + $chunks_in_this_source >= $max_total_chunks) {
5479		- break;
5480		- }
5481		- $chunk_texts[] = $chunk['text'];
5482		- $chunks_in_this_source++;
5483		- }
5484		- $full_text = implode("\n\n", $chunk_texts);
5485		- }
5486		- } else {
5487		- $full_text = $group['single_text'];
5488		- $chunks_in_this_source = 1;
5489		- }
5490		-
5491		- if (!empty($full_text)) {
5492		- // Strip URLs from content if citation links are disabled
5493		- if (!$citation_links_enabled) {
5494		- $full_text = preg_replace('#\bhttps?://[^\s<>"\']+#i', '', $full_text);
5495		- $full_text = preg_replace('/\s+/', ' ', trim($full_text)); // Clean up extra spaces
5496		- }
5497		-
5498		- // Use numbered reference for URL-based entries, plain info label for manual entries
5499		- // Manual entries are stored with an internal mxchat:// placeholder URL — never expose them as citations
5500		- if (!empty($source_url) && $source_url !== '#' && strpos($source_url, 'mxchat://') !== 0) {
5501		- $matches_used++;
5502		- $content .= "## Reference " . $matches_used . " ##\n";
5503		- $content .= $full_text . "\n\n";
5504		-
5505		- // Only include citation URLs if citation links are enabled
5506		- if ($citation_links_enabled) {
5507		- $valid_urls[] = $source_url;
5508		- $content .= "URL: " . $source_url . "\n\n";
5509		- }
5510		- } else {
5511		- // Manual entry — no reference number, no citation
5512		- $content .= "## Information ##\n";
5513		- $content .= $full_text . "\n\n";
5514		- }
5515		-
5516		- // Extract any URLs from the text content itself (only if citation links enabled)
5517		- if ($citation_links_enabled) {
5518		- preg_match_all(
5519		- '#\bhttps?://[^\s<>"\']+#i',
5520		- $full_text,
5521		- $content_urls
5522		- );
5523		- if (!empty($content_urls[0])) {
5524		- $valid_urls = array_merge($valid_urls, $content_urls[0]);
5525		- }
5526		- }
5527		-
5528		- $total_chunks_used += $chunks_in_this_source;
5529		- }
5530		- }
5531		-
5532		- // Process ALL matches for testing data (top 10) - with role checking for testing display
5533		- $all_matches = [];
5534		- foreach ($results['matches'] as $index => $match) {
5535		- if ($index >= 10) break; // Limit to top 10 for testing
5536		-
5537		- $match_id = $match['id'] ?? '';
5538		-
5539		- // Check role access for testing display (use cache if available)
5540		- $role_restriction = $this->get_single_vector_role($match_id, $match['metadata']);
5541		- $has_access = $knowledge_manager->mxchat_user_has_content_access($role_restriction);
5542		-
5543		- $source_display = '';
5544		- if (!empty($match['metadata']['source_url'])) {
5545		- $source_display = $match['metadata']['source_url'];
5546		- } else {
5547		- $content_preview = strip_tags($match['metadata']['text'] ?? '');
5548		- $content_preview = preg_replace('/\s+/', ' ', $content_preview);
5549		- $source_display = substr(trim($content_preview), 0, 50) . '...';
5550		- }
5551		-
5552		- $match_id_for_display = $match['id'] ?? $index;
5553		-
5554		- // Check for chunk metadata in Pinecone
5555		- $is_chunk = isset($match['metadata']['is_chunked']) && $match['metadata']['is_chunked'];
5556		- $chunk_index = isset($match['metadata']['chunk_index']) ? intval($match['metadata']['chunk_index']) : null;
5557		- $total_chunks = isset($match['metadata']['total_chunks']) ? intval($match['metadata']['total_chunks']) : null;
5558		-
5559		- // Also detect chunk from vector ID pattern: {hash}_chunk_{index}
5560		- if (!$is_chunk && MxChat_Chunker::is_chunk_vector_id($match_id_for_display)) {
5561		- $is_chunk = true;
5562		- }
5563		-
5564		- $all_matches[] = [
5565		- 'document_id' => $match_id_for_display,
5566		- 'similarity' => $match['score'],
5567		- 'similarity_percentage' => round($match['score'] * 100, 2),
5568		- 'above_threshold' => $match['score'] >= $similarity_threshold,
5569		- 'source_display' => $source_display,
5570		- 'content_preview' => substr(strip_tags($match['metadata']['text'] ?? ''), 0, 100) . '...',
5571		- 'used_for_context' => in_array($match_id_for_display, $matches_used_for_context),
5572		- 'role_restriction' => $role_restriction,
5573		- 'has_access' => $has_access,
5574		- 'filtered_out' => !$has_access,
5575		- 'is_chunk' => $is_chunk,
5576		- 'chunk_index' => $chunk_index,
5577		- 'total_chunks' => $total_chunks
5578		- ];
5579		- }
5580		-
5581		- // Store for testing panel
5582		- $this->last_similarity_analysis['top_matches'] = $all_matches;
5583		- $this->last_similarity_analysis['total_checked'] = count($results['matches']);
5584		- $this->last_similarity_analysis['sources_used'] = $matches_used;
5585		- $this->last_similarity_analysis['total_chunks_used'] = $total_chunks_used;
5586		-
5587		- // NEW: Store unique valid URLs for validation
5588		- $this->current_valid_urls = array_unique($valid_urls);
5589		-
5590		- // Allow add-ons to act on similarity results (e.g. WooCommerce product card display)
5591		- do_action('mxchat_similarity_results', $this->last_similarity_analysis['top_matches'], $bot_id);
5592		-
5593		- // Add response guidelines
5594		- if ($matches_used === 0) {
5595		- $content = "No reference information was found for this query.\n\n";
5596		- } else {
5597		- // Build response guidelines based on citation links setting
5598		- $content .= "\n## Response Guidelines ##\n" .
5599		- "You are an AI Chatbot. Answer naturally and helpfully using only the information from the references above. " .
5600		- "Be conversational and friendly, but never mention your knowledge base or training data. " .
5601		- "If you don't have specific information or are uncertain about any details, it's always " .
5602		- "better to honestly say you don't know rather than making up or guessing at answers. " .
5603		- "When information is incomplete, let them know you are unsure.\n\n";
5604		-
5605		- // Only add hyperlink instructions if citation links are enabled
5606		- if ($citation_links_enabled) {
5607		- $content .= "CRITICAL: When creating hyperlinks, always use proper markdown format with descriptive text: " .
5608		- "[descriptive text](url). NEVER use empty brackets like [](url). The text in brackets must describe what the link is about. " .
5609		- "Only cite references that have a URL. Do not cite or add source labels to Information sections that have no URL.";
5610		- } else {
5611		- $content .= "IMPORTANT: Do not include any citation links, source URLs, or hyperlinks in your responses. " .
5612		- "Simply provide helpful answers based on the reference information without citing sources.";
5613		- }
5614		- }
5615		-
5616		- return trim($content);
5617		-}
5618		-
5619		-/**
5620		- * Get role restriction for a single vector (with caching)
5621		- */
5622		-private function get_single_vector_role($vector_id, $metadata = array()) {
5623		- global $wpdb;
5624		-
5625		- if (empty($vector_id)) {
5626		- return 'public';
5627		- }
5628		-
5629		- // Check cache first
5630		- $cache_key = 'mxchat_vector_role_' . $vector_id;
5631		- $cached_role = wp_cache_get($cache_key, 'mxchat_vector_roles');
5632		-
5633		- if ($cached_role !== false) {
5634		- return $cached_role;
5635		- }
5636		-
5637		- $role_restriction = 'public';
5638		-
5639		- // First try Pinecone metadata
5640		- if (!empty($metadata['role_restriction'])) {
5641		- $role_restriction = $metadata['role_restriction'];
5642		- } else {
5643		- // Check WordPress table for user-modified roles
5644		- $roles_table = $wpdb->prefix . 'mxchat_pinecone_roles';
5645		- $stored_role = $wpdb->get_var($wpdb->prepare(
5646		- "SELECT role_restriction FROM {$roles_table} WHERE vector_id = %s",
5647		- $vector_id
5648		- ));
5649		-
5650		- if ($stored_role) {
5651		- $role_restriction = $stored_role;
5652		- }
5653		- }
5654		-
5655		- // Cache individual role for 1 hour
5656		- wp_cache_set($cache_key, $role_restriction, 'mxchat_vector_roles', 3600);
5657		-
5658		- return $role_restriction;
5659		-}
5660		-
5661		-/**
5662		- * Fetch and reassemble all chunks for a URL from Pinecone
5663		- *
5664		- * @param string $source_url The source URL to fetch chunks for
5665		- * @param array $bot_config Bot-specific Pinecone configuration
5666		- * @return string Reassembled content from all chunks
5667		- */
5668		-private function reassemble_chunks_from_pinecone($source_url, $bot_config, $max_chunks = 0, &$chunk_count = 0) {
5669		- $api_key = $bot_config['api_key'] ?? '';
5670		- $host = $bot_config['host'] ?? '';
5671		- $namespace = $bot_config['namespace'] ?? '';
5672		-
5673		- if (empty($host) || empty($api_key)) {
5674		- $chunk_count = 0;
5675		- return '';
5676		- }
5677		-
5678		- $base_hash = md5($source_url);
5679		-
5680		- // Use Pinecone list API to find all chunk vectors with this prefix
5681		- $list_url = "https://{$host}/vectors/list";
5682		-
5683		- // Limit to max_chunks if specified, otherwise fetch up to 100
5684		- $fetch_limit = ($max_chunks > 0 && $max_chunks < 100) ? $max_chunks : 100;
5685		-
5686		- $list_body = array(
5687		- 'prefix' => $base_hash . '_chunk_',
5688		- 'limit' => $fetch_limit
5689		- );
5690		-
5691		- if (!empty($namespace)) {
5692		- $list_body['namespace'] = $namespace;
5693		- }
5694		-
5695		- $list_response = wp_remote_post($list_url, array(
5696		- 'headers' => array(
5697		- 'Api-Key' => $api_key,
5698		- 'accept' => 'application/json',
5699		- 'content-type' => 'application/json'
5700		- ),
5701		- 'body' => wp_json_encode($list_body),
5702		- 'timeout' => 30
5703		- ));
5704		-
5705		- if (is_wp_error($list_response)) {
5706		- //error_log('[MXCHAT-CHUNK] List API error: ' . $list_response->get_error_message());
5707		- return '';
5708		- }
5709		-
5710		- $list_data = json_decode(wp_remote_retrieve_body($list_response), true);
5711		-
5712		- if (empty($list_data['vectors'])) {
5713		- //error_log('[MXCHAT-CHUNK] No chunk vectors found for URL: ' . $source_url);
5714		- return '';
5715		- }
5716		-
5717		- // Extract vector IDs
5718		- $vector_ids = array();
5719		- foreach ($list_data['vectors'] as $vector) {
5720		- if (isset($vector['id'])) {
5721		- $vector_ids[] = $vector['id'];
5722		- }
5723		- }
5724		-
5725		- if (empty($vector_ids)) {
5726		- return '';
5727		- }
5728		-
5729		- // Fetch all chunk content
5730		- $fetch_url = "https://{$host}/vectors/fetch";
5731		-
5732		- $fetch_body = array(
5733		- 'ids' => $vector_ids
5734		- );
5735		-
5736		- if (!empty($namespace)) {
5737		- $fetch_body['namespace'] = $namespace;
5738		- }
5739		-
5740		- $fetch_response = wp_remote_post($fetch_url, array(
5741		- 'headers' => array(
5742		- 'Api-Key' => $api_key,
5743		- 'accept' => 'application/json',
5744		- 'content-type' => 'application/json'
5745		- ),
5746		- 'body' => wp_json_encode($fetch_body),
5747		- 'timeout' => 30
5748		- ));
5749		-
5750		- if (is_wp_error($fetch_response)) {
5751		- //error_log('[MXCHAT-CHUNK] Fetch API error: ' . $fetch_response->get_error_message());
5752		- return '';
5753		- }
5754		-
5755		- $fetch_data = json_decode(wp_remote_retrieve_body($fetch_response), true);
5756		-
5757		- if (empty($fetch_data['vectors'])) {
5758		- return '';
5759		- }
5760		-
5761		- // Sort chunks by index and reassemble
5762		- $chunks = array();
5763		- foreach ($fetch_data['vectors'] as $id => $vector) {
5764		- $metadata = $vector['metadata'] ?? array();
5765		- $chunk_index = $metadata['chunk_index'] ?? 0;
5766		- $text = $metadata['text'] ?? '';
5767		-
5768		- // Store chunk with its index
5769		- $chunks[$chunk_index] = $text;
5770		- }
5771		-
5772		- // Sort by chunk index
5773		- ksort($chunks);
5774		-
5775		- // Apply chunk limit if specified
5776		- if ($max_chunks > 0 && count($chunks) > $max_chunks) {
5777		- $chunks = array_slice($chunks, 0, $max_chunks, true);
5778		- }
5779		-
5780		- // Store actual chunk count
5781		- $chunk_count = count($chunks);
5782		-
5783		- // Reassemble content
5784		- return implode("\n\n", $chunks);
5785		-}
5786		-
5787		-/**
5788		- * Search for relevant content using OpenAI Vector Store (File Search)
5789		- *
5790		- * @param string $user_query The user's query text
5791		- * @param string $bot_id The bot ID
5792		- * @param array $vectorstore_config Vector Store configuration
5793		- * @return string Formatted context string with references
5794		- */
5795		-private function find_relevant_content_openai_vectorstore($user_query, $bot_id = 'default', $vectorstore_config = array()) {
5796		- //error_log("MXCHAT DEBUG: find_relevant_content_openai_vectorstore called");
5797		- //error_log(" - bot_id: " . $bot_id);
5798		- //error_log(" - user_query length: " . strlen($user_query));
5799		-
5800		- // Get OpenAI API key
5801		- $mxchat_options = get_option('mxchat_options', array());
5802		- $api_key = $mxchat_options['api_key'] ?? '';
5803		-
5804		- // Reset vectorstore error tracking
5805		- $this->last_vectorstore_error = null;
5806		-
5807		- if (empty($api_key)) {
5808		- //error_log("MXCHAT DEBUG ERROR: OpenAI API key not configured");
5809		- $this->last_vectorstore_error = 'Vector Store search failed: OpenAI API key is not configured.';
5810		- $this->current_valid_urls = [];
5811		- return '';
5812		- }
5813		-
5814		- // Get Vector Store configuration
5815		- if (empty($vectorstore_config)) {
5816		- $vectorstore_config = $this->get_bot_vectorstore_config($bot_id);
5817		- }
5818		-
5819		- $vectorstore_ids_string = $vectorstore_config['vectorstore_ids'] ?? '';
5820		- $max_results = $vectorstore_config['max_results'] ?? 5;
5821		-
5822		- if (empty($vectorstore_ids_string)) {
5823		- //error_log("MXCHAT DEBUG ERROR: No Vector Store IDs configured");
5824		- $this->last_vectorstore_error = 'Vector Store search failed: No Vector Store IDs are configured for this bot.';
5825		- $this->current_valid_urls = [];
5826		- return '';
5827		- }
5828		-
5829		- // Parse Vector Store IDs
5830		- $vectorstore_ids = array_map('trim', explode(',', $vectorstore_ids_string));
5831		- $vectorstore_ids = array_filter($vectorstore_ids); // Remove empty values
5832		-
5833		- //error_log("MXCHAT DEBUG: Vector Store IDs: " . implode(', ', $vectorstore_ids));
5834		- //error_log("MXCHAT DEBUG: Max results: " . $max_results);
5835		-
5836		- // Initialize similarity analysis storage
5837		- $this->last_similarity_analysis = [
5838		- 'knowledge_base_type' => 'OpenAI Vector Store',
5839		- 'bot_id' => $bot_id,
5840		- 'vectorstore_ids' => $vectorstore_ids,
5841		- 'top_matches' => [],
5842		- 'threshold_used' => 0,
5843		- 'total_checked' => 0
5844		- ];
5845		-
5846		- $valid_urls = [];
5847		-
5848		- // Get the selected model
5849		- $bot_options = $this->get_bot_options($bot_id);
5850		- $current_options = !empty($bot_options) ? $bot_options : $mxchat_options;
5851		- $selected_model = $current_options['model'] ?? 'gpt-5.1-chat-latest';
5852		-
5853		- // Verify it's an OpenAI model
5854		- if (!$this->is_openai_chat_model($selected_model)) {
5855		- //error_log("MXCHAT DEBUG ERROR: Vector Store search requires OpenAI model. Current: " . $selected_model);
5856		- $this->last_vectorstore_error = 'Vector Store search requires an OpenAI model. Current model: ' . $selected_model;
5857		- $this->current_valid_urls = [];
5858		- return '';
5859		- }
5860		-
5861		- // Use OpenAI Responses API with file_search tool
5862		- $request_body = array(
5863		- 'model' => $selected_model,
5864		- 'input' => $user_query,
5865		- 'tools' => array(
5866		- array(
5867		- 'type' => 'file_search',
5868		- 'vector_store_ids' => $vectorstore_ids,
5869		- 'max_num_results' => intval($max_results)
5870		- )
5871		- ),
5872		- 'include' => array('output[*].file_search_call.search_results')
5873		- );
5874		-
5875		- //error_log("MXCHAT VECTORSTORE: ========== REQUEST START ==========");
5876		- //error_log("MXCHAT VECTORSTORE: Model: " . $selected_model);
5877		- //error_log("MXCHAT VECTORSTORE: Query: " . substr($user_query, 0, 200));
5878		- //error_log("MXCHAT VECTORSTORE: Vector Store IDs: " . implode(', ', $vectorstore_ids));
5879		- //error_log("MXCHAT VECTORSTORE: Max Results: " . $max_results);
5880		- //error_log("MXCHAT VECTORSTORE: Request body: " . wp_json_encode($request_body));
5881		-
5882		- $response = wp_remote_post('https://api.openai.com/v1/responses', array(
5883		- 'headers' => array(
5884		- 'Authorization' => 'Bearer ' . $api_key,
5885		- 'Content-Type' => 'application/json'
5886		- ),
5887		- 'body' => wp_json_encode($request_body),
5888		- 'timeout' => 60
5889		- ));
5890		-
5891		- if (is_wp_error($response)) {
5892		- //error_log("MXCHAT VECTORSTORE ERROR: WP Error: " . $response->get_error_message());
5893		- $this->last_vectorstore_error = 'Vector Store API request failed: ' . $response->get_error_message();
5894		- $this->current_valid_urls = [];
5895		- return '';
5896		- }
5897		-
5898		- $response_code = wp_remote_retrieve_response_code($response);
5899		- //error_log("MXCHAT VECTORSTORE: Response code: " . $response_code);
5900		-
5901		- $response_body = wp_remote_retrieve_body($response);
5902		- //error_log("MXCHAT VECTORSTORE: Raw response (first 2000 chars): " . substr($response_body, 0, 2000));
5903		-
5904		- if ($response_code !== 200) {
5905		- //error_log("MXCHAT VECTORSTORE ERROR: API error response: " . $response_body);
5906		- $api_error_detail = '';
5907		- $decoded_error = json_decode($response_body, true);
5908		- if (isset($decoded_error['error']['message'])) {
5909		- $api_error_detail = $decoded_error['error']['message'];
5910		- }
5911		- $this->last_vectorstore_error = 'Vector Store API returned HTTP ' . $response_code . ($api_error_detail ? ': ' . $api_error_detail : '');
5912		- $this->current_valid_urls = [];
5913		- return '';
5914		- }
5915		- $result = json_decode($response_body, true);
5916		-
5917		- if (json_last_error() !== JSON_ERROR_NONE) {
5918		- //error_log("MXCHAT VECTORSTORE ERROR: JSON decode error: " . json_last_error_msg());
5919		- $this->last_vectorstore_error = 'Vector Store response could not be parsed: ' . json_last_error_msg();
5920		- $this->current_valid_urls = [];
5921		- return '';
5922		- }
5923		-
5924		- // Debug: Log the structure of the result
5925		- //error_log("MXCHAT VECTORSTORE: Result keys: " . implode(', ', array_keys($result)));
5926		- if (isset($result['output'])) {
5927		- //error_log("MXCHAT VECTORSTORE: Output count: " . count($result['output']));
5928		- foreach ($result['output'] as $idx => $out) {
5929		- //error_log("MXCHAT VECTORSTORE: Output[$idx] type: " . ($out['type'] ?? 'unknown'));
5930		- //error_log("MXCHAT VECTORSTORE: Output[$idx] keys: " . implode(', ', array_keys($out)));
5931		- }
5932		- } else {
5933		- //error_log("MXCHAT VECTORSTORE: No 'output' key in result!");
5934		- }
5935		-
5936		- // Extract file search results from the response
5937		- $content = '';
5938		- $matches_used = 0;
5939		- $all_matches = [];
5940		-
5941		- // The Responses API returns output array with tool results
5942		- if (isset($result['output']) && is_array($result['output'])) {
5943		- foreach ($result['output'] as $output_item) {
5944		- // Look for file_search_call results
5945		- if (isset($output_item['type']) && $output_item['type'] === 'file_search_call') {
5946		- //error_log("MXCHAT VECTORSTORE: Found file_search_call output item");
5947		- //error_log("MXCHAT VECTORSTORE: file_search_call keys: " . implode(', ', array_keys($output_item)));
5948		-
5949		- // Check for search_results in the output item directly
5950		- $search_results = $output_item['search_results'] ?? $output_item['results'] ?? [];
5951		- //error_log("MXCHAT VECTORSTORE: Search results count: " . count($search_results));
5952		-
5953		- if (empty($search_results)) {
5954		- //error_log("MXCHAT VECTORSTORE: No search results found in file_search_call");
5955		- //error_log("MXCHAT VECTORSTORE: file_search_call content: " . wp_json_encode($output_item));
5956		- }
5957		-
5958		- foreach ($search_results as $index => $search_result) {
5959		- $filename = $search_result['filename'] ?? '';
5960		- $score = $search_result['score'] ?? 0;
5961		- $text_content = '';
5962		-
5963		- // Extract text content from the result
5964		- // The text can be directly on the result OR nested under content array
5965		- if (isset($search_result['text']) && !empty($search_result['text'])) {
5966		- // Direct text field (OpenAI's actual format)
5967		- $text_content = $search_result['text'];
5968		- //error_log("MXCHAT VECTORSTORE: Found text directly on result[$index], length: " . strlen($text_content));
5969		- } elseif (isset($search_result['content']) && is_array($search_result['content'])) {
5970		- // Nested content array format
5971		- foreach ($search_result['content'] as $content_item) {
5972		- if (isset($content_item['text'])) {
5973		- $text_content .= $content_item['text'] . "\n";
5974		- }
5975		- }
5976		- //error_log("MXCHAT VECTORSTORE: Found text in content array for result[$index], length: " . strlen($text_content));
5977		- } else {
5978		- //error_log("MXCHAT VECTORSTORE: No text found for result[$index]. Keys: " . implode(', ', array_keys($search_result)));
5979		- }
5980		-
5981		- if (!empty($text_content)) {
5982		- $content .= "## Reference " . ($matches_used + 1) . " ##\n";
5983		- $content .= trim($text_content) . "\n\n";
5984		-
5985		- if (!empty($filename)) {
5986		- $content .= "Source: " . $filename . "\n\n";
5987		- }
5988		-
5989		- // Extract URLs from content
5990		- preg_match_all(
5991		- '#\bhttps?://[^\s<>"\']+#i',
5992		- $text_content,
5993		- $content_urls
5994		- );
5995		- if (!empty($content_urls[0])) {
5996		- $valid_urls = array_merge($valid_urls, $content_urls[0]);
5997		- }
5998		-
5999		- $matches_used++;
6000		- }
6001		-
6002		- // Store for similarity analysis
6003		- $all_matches[] = [
6004		- 'document_id' => $filename ?: ('result_' . $index),
6005		- 'similarity' => $score,
6006		- 'similarity_percentage' => round($score * 100, 2),
6007		- 'above_threshold' => true,
6008		- 'source_display' => $filename,
6009		- 'content_preview' => substr(strip_tags($text_content), 0, 100) . '...',
6010		- 'used_for_context' => true,
6011		- 'role_restriction' => 'public',
6012		- 'has_access' => true,
6013		- 'filtered_out' => false
6014		- ];
6015		- }
6016		- }
6017		-
6018		- // Also check for message content with annotations (citations)
6019		- if (isset($output_item['type']) && $output_item['type'] === 'message') {
6020		- if (isset($output_item['content']) && is_array($output_item['content'])) {
6021		- foreach ($output_item['content'] as $content_block) {
6022		- if (isset($content_block['annotations']) && is_array($content_block['annotations'])) {
6023		- foreach ($content_block['annotations'] as $annotation) {
6024		- if (isset($annotation['filename'])) {
6025		- $filename = $annotation['filename'];
6026		- $score = $annotation['score'] ?? 0;
6027		- $text_content = '';
6028		-
6029		- if (isset($annotation['content']) && is_array($annotation['content'])) {
6030		- foreach ($annotation['content'] as $ann_content) {
6031		- if (isset($ann_content['text'])) {
6032		- $text_content .= $ann_content['text'] . "\n";
6033		- }
6034		- }
6035		- }
6036		-
6037		- if (!empty($text_content) && $matches_used < $max_results) {
6038		- $content .= "## Reference " . ($matches_used + 1) . " ##\n";
6039		- $content .= trim($text_content) . "\n\n";
6040		- $content .= "Source: " . $filename . "\n\n";
6041		-
6042		- preg_match_all(
6043		- '#\bhttps?://[^\s<>"\']+#i',
6044		- $text_content,
6045		- $content_urls
6046		- );
6047		- if (!empty($content_urls[0])) {
6048		- $valid_urls = array_merge($valid_urls, $content_urls[0]);
6049		- }
6050		-
6051		- $matches_used++;
6052		-
6053		- $all_matches[] = [
6054		- 'document_id' => $filename,
6055		- 'similarity' => $score,
6056		- 'similarity_percentage' => round($score * 100, 2),
6057		- 'above_threshold' => true,
6058		- 'source_display' => $filename,
6059		- 'content_preview' => substr(strip_tags($text_content), 0, 100) . '...',
6060		- 'used_for_context' => true,
6061		- 'role_restriction' => 'public',
6062		- 'has_access' => true,
6063		- 'filtered_out' => false
6064		- ];
6065		- }
6066		- }
6067		- }
6068		- }
6069		- }
6070		- }
6071		- }
6072		- }
6073		- }
6074		-
6075		- // Store for testing panel
6076		- $this->last_similarity_analysis['top_matches'] = $all_matches;
6077		- $this->last_similarity_analysis['total_checked'] = count($all_matches);
6078		-
6079		- // Store unique valid URLs for validation
6080		- $this->current_valid_urls = array_unique($valid_urls);
6081		-
6082		- // Allow add-ons to act on similarity results (e.g. WooCommerce product card display)
6083		- do_action('mxchat_similarity_results', $this->last_similarity_analysis['top_matches'], $bot_id);
6084		-
6085		- //error_log("MXCHAT VECTORSTORE: ========== SEARCH COMPLETE ==========");
6086		- //error_log("MXCHAT VECTORSTORE: Matches used: " . $matches_used);
6087		- //error_log("MXCHAT VECTORSTORE: All matches count: " . count($all_matches));
6088		- //error_log("MXCHAT VECTORSTORE: Content length: " . strlen($content));
6089		- if ($matches_used > 0) {
6090		- //error_log("MXCHAT VECTORSTORE: Content preview: " . substr($content, 0, 500));
6091		- }
6092		-
6093		- // Check if citation links are enabled
6094		- $citation_links_enabled = ($mxchat_options['citation_links_toggle'] ?? 'on') === 'on';
6095		-
6096		- // Add response guidelines
6097		- if ($matches_used === 0) {
6098		- //error_log("MXCHAT VECTORSTORE: No matches found - returning empty reference message");
6099		- $content = "No reference information was found for this query.\n\n";
6100		- } else {
6101		- // Build response guidelines based on citation links setting
6102		- $content .= "\n## Response Guidelines ##\n" .
6103		- "You are an AI Chatbot. Answer naturally and helpfully using only the information from the references above. " .
6104		- "Be conversational and friendly, but never mention your knowledge base or training data. " .
6105		- "If you don't have specific information or are uncertain about any details, it's always " .
6106		- "better to honestly say you don't know rather than making up or guessing at answers. " .
6107		- "When information is incomplete, let them know you are unsure.\n\n";
6108		-
6109		- // Only add hyperlink instructions if citation links are enabled
6110		- if ($citation_links_enabled) {
6111		- $content .= "CRITICAL: When creating hyperlinks, always use proper markdown format with descriptive text: " .
6112		- "[descriptive text](url). NEVER use empty brackets like [](url). The text in brackets must describe what the link is about.";
6113		- } else {
6114		- $content .= "IMPORTANT: Do not include any citation links, source URLs, or hyperlinks in your responses. " .
6115		- "Simply provide helpful answers based on the reference information without citing sources.";
6116		- }
6117		- }
6118		-
6119		- //error_log("MXCHAT DEBUG: Vector Store search complete. Matches used: " . $matches_used);
6120		-
6121		- return trim($content);
6122		-}
6123		-
6124		-/**
6125		- * Check if the given model is an OpenAI chat model
6126		- *
6127		- * @param string $model The model ID
6128		- * @return bool True if it's an OpenAI model
6129		- */
6130		-private function is_openai_chat_model($model) {
6131		- $openai_prefixes = array('gpt-', 'o1-', 'o3-');
6132		- foreach ($openai_prefixes as $prefix) {
6133		- if (strpos($model, $prefix) === 0) {
6134		- return true;
6135		- }
6136		- }
6137		- return false;
6138		-}
6139		-
6140		-/**
6141		- * Get bot-specific Vector Store configuration
6142		- *
6143		- * @param string $bot_id The bot ID
6144		- * @return array Configuration array
6145		- */
6146		-private function get_bot_vectorstore_config($bot_id = 'default') {
6147		- $vectorstore_options = get_option('mxchat_openai_vectorstore_options', array());
6148		-
6149		- // Default global settings
6150		- $default_config = array(
6151		- 'use_vectorstore' => ($vectorstore_options['mxchat_use_openai_vectorstore'] ?? '0') === '1',
6152		- 'vectorstore_ids' => $vectorstore_options['mxchat_vectorstore_ids'] ?? '',
6153		- 'max_results' => $vectorstore_options['mxchat_vectorstore_max_results'] ?? 5
6154		- );
6155		-
6156		- // Allow multi-bot plugin to override with bot-specific settings
6157		- $bot_config = apply_filters('mxchat_get_bot_vectorstore_config', $default_config, $bot_id);
6158		-
6159		- // Preserve max_results from global settings if not set in bot config
6160		- if (!isset($bot_config['max_results'])) {
6161		- $bot_config['max_results'] = $default_config['max_results'];
6162		- }
6163		-
6164		- return $bot_config;
6165		-}
6166		-
6167		-private function mxchat_find_relevant_products($user_embedding) {
6168		- //error_log('MXChat Vector Search: Starting product search...');
6169		-
6170		- // Retrieve the add-on settings from the database
6171		- $addon_options = get_option('mxchat_pinecone_addon_options', array());
6172		-
6173		- // Determine whether Pinecone is enabled
6174		- $use_pinecone = (isset($addon_options['mxchat_use_pinecone']) && $addon_options['mxchat_use_pinecone'] === '1') ? 1 : 0;
6175		-
6176		- //error_log('Pinecone enabled flag: ' . $use_pinecone);
6177		-
6178		- if ($use_pinecone === 1) {
6179		- //error_log('MXChat Vector Search: Using Pinecone database for products');
6180		- return $this->find_relevant_products_pinecone($user_embedding);
6181		- } else {
6182		- //error_log('MXChat Vector Search: Using WordPress database for products');
6183		- return $this->find_relevant_products_wordpress($user_embedding);
6184		- }
6185		-}
6186		-private function find_relevant_products_wordpress($user_embedding) {
6187		- global $wpdb;
6188		- $system_prompt_table = $wpdb->prefix . 'mxchat_system_prompt_content';
6189		-
6190		- if (!is_array($user_embedding)) {
6191		- return '';
6192		- }
6193		-
6194		- // Streaming top-K pass: scan rows in small batches, keep only the top 3
6195		- // results above the similarity threshold. Peak memory is bounded by
6196		- // $batch_size embedding rows plus a 3-element top list.
6197		- $batch_size = 250;
6198		- $similarity_threshold = 0.85;
6199		- $top_k = 3;
6200		- $top_results = [];
6201		- $offset = 0;
6202		-
6203		- do {
6204		- $batch = $wpdb->get_results($wpdb->prepare(
6205		- "SELECT id, embedding_vector
6206		- FROM {$system_prompt_table}
6207		- LIMIT %d OFFSET %d",
6208		- $batch_size,
6209		- $offset
6210		- ));
6211		-
6212		- if (empty($batch)) {
6213		- break;
6214		- }
6215		-
6216		- foreach ($batch as $row) {
6217		- $database_embedding = $row->embedding_vector
6218		- ? unserialize($row->embedding_vector, ['allowed_classes' => false])
6219		- : null;
6220		-
6221		- if (!is_array($database_embedding)) {
6222		- unset($database_embedding);
6223		- continue;
6224		- }
6225		-
6226		- $similarity = $this->mxchat_calculate_cosine_similarity($user_embedding, $database_embedding);
6227		- unset($database_embedding);
6228		-
6229		- if ($similarity < $similarity_threshold) {
6230		- continue;
6231		- }
6232		-
6233		- // Insert into bounded top-K (kept sorted descending)
6234		- if (count($top_results) < $top_k) {
6235		- $top_results[] = ['id' => $row->id, 'similarity' => $similarity];
6236		- usort($top_results, function ($a, $b) {
6237		- return $b['similarity'] <=> $a['similarity'];
6238		- });
6239		- } elseif ($similarity > $top_results[$top_k - 1]['similarity']) {
6240		- $top_results[$top_k - 1] = ['id' => $row->id, 'similarity' => $similarity];
6241		- usort($top_results, function ($a, $b) {
6242		- return $b['similarity'] <=> $a['similarity'];
6243		- });
6244		- }
6245		- }
6246		-
6247		- unset($batch);
6248		- $offset += $batch_size;
6249		- } while (true);
6250		-
6251		- if (empty($top_results)) {
6252		- return '';
6253		- }
6254		-
6255		- $content = '';
6256		- foreach ($top_results as $result) {
6257		- $chunk_content = $this->fetch_content_with_product_links($result['id']);
6258		- $content .= $chunk_content . "\n\n";
6259		- }
6260		-
6261		- return trim($content);
6262		-}
6263		-
6264		-
6265		-private function find_relevant_products_pinecone($user_embedding) {
6266		- //error_log('Starting Pinecone product search...');
6267		-
6268		- $options = get_option('mxchat_pinecone_addon_options', array());
6269		- $api_key = $options['mxchat_pinecone_api_key'] ?? '';
6270		- $host = $options['mxchat_pinecone_host'] ?? '';
6271		-
6272		- if (empty($host) || empty($api_key)) {
6273		- //error_log('Pinecone credentials not properly configured for product search');
6274		- return '';
6275		- }
6276		-
6277		- $similarity_threshold = 0.85;
6278		- $api_endpoint = "https://{$host}/query";
6279		-
6280		- $request_body = array(
6281		- 'vector' => $user_embedding,
6282		- 'topK' => 5,
6283		- 'includeMetadata' => true,
6284		- 'includeValues' => true,
6285		- 'filter' => array(
6286		- 'type' => 'product'
6287		- )
6288		- );
6289		-
6290		- //error_log('Sending request to Pinecone with body: ' . wp_json_encode($request_body));
6291		-
6292		- $response = wp_remote_post($api_endpoint, array(
6293		- 'headers' => array(
6294		- 'Api-Key' => $api_key,
6295		- 'accept' => 'application/json',
6296		- 'content-type' => 'application/json'
6297		- ),
6298		- 'body' => wp_json_encode($request_body),
6299		- 'timeout' => 30
6300		- ));
6301		-
6302		- if (is_wp_error($response)) {
6303		- //error_log('Pinecone product query error: ' . $response->get_error_message());
6304		- return '';
6305		- }
6306		-
6307		- $response_code = wp_remote_retrieve_response_code($response);
6308		- //error_log('Pinecone response code: ' . $response_code);
6309		-
6310		- if ($response_code !== 200) {
6311		- //error_log('Pinecone API error during product search: ' . wp_remote_retrieve_body($response));
6312		- return '';
6313		- }
6314		-
6315		- $results = json_decode(wp_remote_retrieve_body($response), true);
6316		- //error_log('Pinecone raw response: ' . wp_remote_retrieve_body($response));
6317		-
6318		- if (empty($results['matches'])) {
6319		- //error_log('No matches found in Pinecone response');
6320		- return '';
6321		- }
6322		-
6323		- $content = '';
6324		- foreach ($results['matches'] as $match) {
6325		- if ($match['score'] < $similarity_threshold) {
6326		- //error_log("Match below threshold: " . $match['score']);
6327		- continue;
6328		- }
6329		-
6330		- if (!empty($match['metadata']['text'])) {
6331		- $content .= $match['metadata']['text'];
6332		- if (!empty($match['metadata']['source_url'])) {
6333		- $content .= "\n\nFor more details, check out this product: " . esc_url($match['metadata']['source_url']);
6334		- }
6335		- $content .= "\n\n";
6336		- }
6337		- }
6338		-
6339		- return trim($content);
6340		-}
6341		-
6342		-
6343	344	private function fetch_content_with_product_links($most_relevant_id) {
6344	345	global $wpdb;
6345	346	$system_prompt_table = $wpdb->prefix . 'mxchat_system_prompt_content';
6346	347
		@@ -6359,2470 +360,41 @@
6359	360
6360	361	return null;
6361	362	}
6362	363
6363		-/**
6364		- * Get system instructions for a specific bot or default
6365		- * Checks for multi-bot add-on and uses bot-specific instructions if available
6366		- * Automatically strips URLs if citation links are disabled
6367		- * Replaces {visitor_name} placeholder with actual visitor name if available
6368		- *
6369		- * @param string $bot_id The bot ID to get instructions for
6370		- * @param string $session_id Optional session ID to lookup visitor name
6371		- */
6372		-private function get_system_instructions($bot_id = 'default', $session_id = '') {
6373		- $instructions = '';
6374	364
6375		- // Check if multi-bot add-on is active
6376		- if (class_exists('MxChat_Multi_Bot_Core_Manager') && $bot_id !== 'default') {
6377		- // Get bot-specific options from multi-bot add-on
6378		- $bot_options = apply_filters('mxchat_get_bot_options', array(), $bot_id);
6379		-
6380		- // If bot has custom system instructions, use those
6381		- if (!empty($bot_options['system_prompt_instructions'])) {
6382		- $instructions = $bot_options['system_prompt_instructions'];
6383		- }
	365	+ private function mxchat_generate_response($relevant_content, $api_key, $conversation_history) {
	366	+ if (!$relevant_content) {
	367	+ return "I'm sorry, I couldn't find relevant information on that topic.";
6384	368	}
6385	369
6386		- // Fall back to default system instructions
6387		- if (empty($instructions)) {
6388		- $instructions = isset($this->options['system_prompt_instructions']) ? $this->options['system_prompt_instructions'] : '';
6389		- }
	370	+ $system_prompt_instructions = isset($this->options['system_prompt_instructions']) ? $this->options['system_prompt_instructions'] : '';
6390	371
6391		- // Check if citation links are disabled - if so, strip URLs from instructions
6392		- $fresh_options = get_option('mxchat_options', []);
6393		- $citation_links_enabled = isset($fresh_options['citation_links_toggle']) ? ($fresh_options['citation_links_toggle'] === 'on') : true;
6394		-
6395		- if (!$citation_links_enabled && !empty($instructions)) {
6396		- $instructions = preg_replace('#\bhttps?://[^\s<>"\']+#i', '', $instructions);
6397		- $instructions = preg_replace('/\s+/', ' ', trim($instructions)); // Clean up extra spaces
6398		- }
6399		-
6400		- // Replace {visitor_name} placeholder with actual visitor name if available
6401		- if (!empty($instructions) && !empty($session_id) && stripos($instructions, '{visitor_name}') !== false) {
6402		- $name_option_key = "mxchat_name_{$session_id}";
6403		- $visitor_name = get_option($name_option_key, '');
6404		-
6405		- if (!empty($visitor_name)) {
6406		- $instructions = str_ireplace('{visitor_name}', sanitize_text_field($visitor_name), $instructions);
6407		- } else {
6408		- // Remove placeholder if no name is available
6409		- $instructions = str_ireplace('{visitor_name}', '', $instructions);
6410		- $instructions = preg_replace('/\s{2,}/', ' ', trim($instructions)); // Clean up extra spaces
6411		- }
6412		- }
6413		-
6414		- // Allow developers to filter system instructions and process shortcodes
6415		- $instructions = apply_filters('mxchat_system_instructions', $instructions, $bot_id, $session_id);
6416		- $instructions = do_shortcode($instructions);
6417		-
6418		- return $instructions;
6419		-}
6420		-/**
6421		- * Get the current bot ID from session or request context
6422		- */
6423		-private function get_current_bot_id($session_id = '') {
6424		- // First, check if bot_id is passed in the current request
6425		- if (isset($_POST['bot_id']) && !empty($_POST['bot_id'])) {
6426		- return sanitize_key($_POST['bot_id']);
6427		- }
6428		-
6429		- // If not in POST, try to get it from session data
6430		- if (!empty($session_id)) {
6431		- $bot_id = get_option("mxchat_session_bot_{$session_id}", '');
6432		- if (!empty($bot_id)) {
6433		- return $bot_id;
6434		- }
6435		- }
6436		-
6437		- // Fall back to default
6438		- return 'default';
6439		-}
6440		-private function mxchat_generate_response($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, $selected_model = 'gpt-5.1-chat-latest') {
6441		- try {
6442		- if (!$relevant_content) {
6443		- $error_response = [
6444		- 'error' => esc_html__("I couldn't find relevant information on that topic.", 'mxchat'),
6445		- 'error_code' => 'no_relevant_content'
6446		- ];
6447		-
6448		- if ($testing_data !== null) {
6449		- $error_response['testing_data'] = $testing_data;
6450		- }
6451		-
6452		- return $error_response;
6453		- }
6454		-
6455		- if (!is_array($conversation_history)) {
6456		- $conversation_history = array();
6457		- }
6458		-
6459		- // Check if this is an OpenRouter model
6460		- if ($selected_model === 'openrouter') {
6461		- // Get the actual OpenRouter model from options
6462		- $openrouter_selected_model = $this->options['openrouter_selected_model'] ?? '';
6463		-
6464		- if (empty($openrouter_selected_model)) {
6465		- $error_response = [
6466		- 'error' => esc_html__('No OpenRouter model selected. Please select a model in settings.', 'mxchat'),
6467		- 'error_code' => 'no_openrouter_model_selected'
6468		- ];
6469		- if ($testing_data !== null) {
6470		- $error_response['testing_data'] = $testing_data;
6471		- }
6472		- return $error_response;
6473		- }
6474		-
6475		- if (empty($openrouter_api_key)) {
6476		- $error_response = [
6477		- 'error' => esc_html__('OpenRouter API key is not configured', 'mxchat'),
6478		- 'error_code' => 'missing_openrouter_api_key'
6479		- ];
6480		- if ($testing_data !== null) {
6481		- $error_response['testing_data'] = $testing_data;
6482		- }
6483		- return $error_response;
6484		- }
6485		-
6486		- if ($streaming) {
6487		- return $this->mxchat_generate_response_openrouter_stream(
6488		- $openrouter_selected_model,
6489		- $openrouter_api_key,
6490		- $conversation_history,
6491		- $relevant_content,
6492		- $session_id,
6493		- $testing_data
6494		- );
6495		- } else {
6496		- $response = $this->mxchat_generate_response_openrouter(
6497		- $openrouter_selected_model,
6498		- $openrouter_api_key,
6499		- $conversation_history,
6500		- $relevant_content
6501		- );
6502		- }
6503		-
6504		- if (is_array($response) && isset($response['error'])) {
6505		- if ($testing_data !== null) {
6506		- $response['testing_data'] = $testing_data;
6507		- }
6508		- return $response;
6509		- }
6510		-
6511		- return $response;
6512		- }
6513		-
6514		- // Extract model prefix to determine the provider
6515		- $model_parts = explode('-', $selected_model);
6516		- $provider = strtolower($model_parts[0]);
6517		-
6518		- // Handle model selection based on provider prefix
6519		- switch ($provider) {
6520		- case 'gemini':
6521		- if (empty($gemini_api_key)) {
6522		- $error_response = [
6523		- 'error' => esc_html__('Google Gemini API key is not configured', 'mxchat'),
6524		- 'error_code' => 'missing_gemini_api_key'
6525		- ];
6526		- if ($testing_data !== null) {
6527		- $error_response['testing_data'] = $testing_data;
6528		- }
6529		- return $error_response;
6530		- }
6531		- $response = $this->mxchat_generate_response_gemini(
6532		- $selected_model,
6533		- $gemini_api_key,
6534		- $conversation_history,
6535		- $relevant_content
6536		- );
6537		- break;
6538		-
6539		- case 'claude':
6540		- if (empty($claude_api_key)) {
6541		- $error_response = [
6542		- 'error' => esc_html__('Claude API key is not configured', 'mxchat'),
6543		- 'error_code' => 'missing_claude_api_key'
6544		- ];
6545		- if ($testing_data !== null) {
6546		- $error_response['testing_data'] = $testing_data;
6547		- }
6548		- return $error_response;
6549		- }
6550		- if ($streaming) {
6551		- return $this->mxchat_generate_response_claude_stream(
6552		- $selected_model,
6553		- $claude_api_key,
6554		- $conversation_history,
6555		- $relevant_content,
6556		- $session_id,
6557		- $testing_data
6558		- );
6559		- } else {
6560		- $response = $this->mxchat_generate_response_claude(
6561		- $selected_model,
6562		- $claude_api_key,
6563		- $conversation_history,
6564		- $relevant_content
6565		- );
6566		- }
6567		- break;
6568		-
6569		- case 'grok':
6570		- if (empty($xai_api_key)) {
6571		- $error_response = [
6572		- 'error' => esc_html__('X.AI API key is not configured', 'mxchat'),
6573		- 'error_code' => 'missing_xai_api_key'
6574		- ];
6575		- if ($testing_data !== null) {
6576		- $error_response['testing_data'] = $testing_data;
6577		- }
6578		- return $error_response;
6579		- }
6580		- if ($streaming) {
6581		- return $this->mxchat_generate_response_xai_stream(
6582		- $selected_model,
6583		- $xai_api_key,
6584		- $conversation_history,
6585		- $relevant_content,
6586		- $session_id,
6587		- $testing_data
6588		- );
6589		- } else {
6590		- $response = $this->mxchat_generate_response_xai(
6591		- $selected_model,
6592		- $xai_api_key,
6593		- $conversation_history,
6594		- $relevant_content
6595		- );
6596		- }
6597		- break;
6598		-
6599		- case 'deepseek':
6600		- if (empty($deepseek_api_key)) {
6601		- $error_response = [
6602		- 'error' => esc_html__('DeepSeek API key is not configured', 'mxchat'),
6603		- 'error_code' => 'missing_deepseek_api_key'
6604		- ];
6605		- if ($testing_data !== null) {
6606		- $error_response['testing_data'] = $testing_data;
6607		- }
6608		- return $error_response;
6609		- }
6610		- if ($streaming) {
6611		- return $this->mxchat_generate_response_deepseek_stream(
6612		- $selected_model,
6613		- $deepseek_api_key,
6614		- $conversation_history,
6615		- $relevant_content,
6616		- $session_id,
6617		- $testing_data
6618		- );
6619		- } else {
6620		- $response = $this->mxchat_generate_response_deepseek(
6621		- $selected_model,
6622		- $deepseek_api_key,
6623		- $conversation_history,
6624		- $relevant_content
6625		- );
6626		- }
6627		- break;
6628		-
6629		- case 'gpt':
6630		- case 'o1':
6631		- if (empty($api_key)) {
6632		- $error_response = [
6633		- 'error' => esc_html__('OpenAI API key is not configured', 'mxchat'),
6634		- 'error_code' => 'missing_openai_api_key'
6635		- ];
6636		- if ($testing_data !== null) {
6637		- $error_response['testing_data'] = $testing_data;
6638		- }
6639		- return $error_response;
6640		- }
6641		-
6642		- // Check if web search is enabled for this OpenAI model
6643		- $web_search_enabled = isset($this->options['enable_web_search']) && $this->options['enable_web_search'] === 'on';
6644		- // Models that don't support web search
6645		- $unsupported_web_search_models = array('gpt-4.1-nano');
6646		- $model_supports_web_search = !in_array($selected_model, $unsupported_web_search_models);
6647		-
6648		- if ($web_search_enabled && $model_supports_web_search) {
6649		- // Use Responses API (required for some models, or when web search is enabled)
6650		- return $this->mxchat_generate_response_openai_web_search(
6651		- $selected_model,
6652		- $api_key,
6653		- $conversation_history,
6654		- $relevant_content,
6655		- $session_id,
6656		- $testing_data,
6657		- $streaming
6658		- );
6659		- } elseif ($streaming) {
6660		- return $this->mxchat_generate_response_openai_stream(
6661		- $selected_model,
6662		- $api_key,
6663		- $conversation_history,
6664		- $relevant_content,
6665		- $session_id,
6666		- $testing_data
6667		- );
6668		- } else {
6669		- $response = $this->mxchat_generate_response_openai(
6670		- $selected_model,
6671		- $api_key,
6672		- $conversation_history,
6673		- $relevant_content
6674		- );
6675		- }
6676		- break;
6677		-
6678		- default:
6679		- if (empty($api_key)) {
6680		- $error_response = [
6681		- 'error' => esc_html__('OpenAI API key is not configured', 'mxchat'),
6682		- 'error_code' => 'missing_openai_api_key'
6683		- ];
6684		- if ($testing_data !== null) {
6685		- $error_response['testing_data'] = $testing_data;
6686		- }
6687		- return $error_response;
6688		- }
6689		-
6690		- // Check if web search is enabled (default case also handles OpenAI models)
6691		- $web_search_enabled = isset($this->options['enable_web_search']) && $this->options['enable_web_search'] === 'on';
6692		- $unsupported_web_search_models = array('gpt-4.1-nano');
6693		- $model_supports_web_search = !in_array($selected_model, $unsupported_web_search_models);
6694		-
6695		- if ($web_search_enabled && $model_supports_web_search) {
6696		- return $this->mxchat_generate_response_openai_web_search(
6697		- $selected_model,
6698		- $api_key,
6699		- $conversation_history,
6700		- $relevant_content,
6701		- $session_id,
6702		- $testing_data,
6703		- $streaming
6704		- );
6705		- } elseif ($streaming) {
6706		- return $this->mxchat_generate_response_openai_stream(
6707		- $selected_model,
6708		- $api_key,
6709		- $conversation_history,
6710		- $relevant_content,
6711		- $session_id,
6712		- $testing_data
6713		- );
6714		- } else {
6715		- $response = $this->mxchat_generate_response_openai(
6716		- $selected_model,
6717		- $api_key,
6718		- $conversation_history,
6719		- $relevant_content
6720		- );
6721		- }
6722		- break;
6723		- }
6724		-
6725		- if (is_array($response) && isset($response['error'])) {
6726		- if ($testing_data !== null) {
6727		- $response['testing_data'] = $testing_data;
6728		- }
6729		- return $response;
6730		- }
6731		-
6732		- return $response;
6733		-
6734		- } catch (Exception $e) {
6735		- $error_response = [
6736		- 'error' => sprintf(esc_html__('An error occurred: %s', 'mxchat'), esc_html($e->getMessage())),
6737		- 'error_code' => 'system_exception',
6738		- 'exception_details' => $e->getMessage()
6739		- ];
6740		-
6741		- if ($testing_data !== null) {
6742		- $error_response['testing_data'] = $testing_data;
6743		- }
6744		-
6745		- return $error_response;
6746		- }
6747		-}
6748		-private function mxchat_generate_response_openrouter_stream($selected_model, $openrouter_api_key, $conversation_history, $relevant_content, $session_id, $testing_data = null) {
6749		- try {
6750		- $bot_id = $this->get_current_bot_id($session_id);
6751		- $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
6752		-
6753		- if (!is_array($conversation_history)) {
6754		- $conversation_history = array();
6755		- }
6756		-
6757		- $formatted_conversation = array();
6758		-
6759		- $formatted_conversation[] = array(
6760		- 'role' => 'system',
6761		- 'content' => $system_prompt_instructions . " " . $relevant_content
6762		- );
6763		-
6764		- foreach ($conversation_history as $message) {
6765		- if (is_array($message) && isset($message['role']) && isset($message['content'])) {
6766		- $role = $message['role'];
6767		- if ($role === 'bot' || $role === 'agent') {
6768		- $role = 'assistant';
6769		- }
6770		- if (!in_array($role, ['system', 'assistant', 'user'])) {
6771		- $role = 'user';
6772		- }
6773		- $formatted_conversation[] = array(
6774		- 'role' => $role,
6775		- 'content' => $message['content']
6776		- );
6777		- }
6778		- }
6779		-
6780		- if (headers_sent() || !function_exists('curl_init')) {
6781		- $regular_response = $this->mxchat_generate_response_openrouter(
6782		- $selected_model,
6783		- $openrouter_api_key,
6784		- $conversation_history,
6785		- $relevant_content
6786		- );
6787		-
6788		- // Save bot response to transcript
6789		- if (!empty($regular_response) && !empty($session_id)) {
6790		- $this->mxchat_save_chat_message($session_id, 'bot', $regular_response);
6791		- }
6792		-
6793		- $response_data = [
6794		- 'text' => $regular_response,
6795		- 'html' => '',
6796		- 'session_id' => $session_id
6797		- ];
6798		-
6799		- if ($testing_data !== null) {
6800		- $response_data['testing_data'] = $testing_data;
6801		- }
6802		-
6803		- header('Content-Type: application/json');
6804		- echo json_encode($response_data);
6805		- return true;
6806		- }
6807		-
6808		- $body = json_encode([
6809		- 'model' => $selected_model,
6810		- 'messages' => $formatted_conversation,
6811		- 'temperature' => 1,
6812		- 'stream' => true
6813		- ]);
6814		-
6815		- // Setup streaming headers now that we know we're actually streaming
6816		- $this->setup_streaming_headers();
6817		-
6818		- $ch = curl_init();
6819		- curl_setopt($ch, CURLOPT_URL, 'https://openrouter.ai/api/v1/chat/completions');
6820		- curl_setopt($ch, CURLOPT_RETURNTRANSFER, false);
6821		- curl_setopt($ch, CURLOPT_POST, true);
6822		- curl_setopt($ch, CURLOPT_POSTFIELDS, $body);
6823		- curl_setopt($ch, CURLOPT_HTTPHEADER, array(
6824		- 'Content-Type: application/json',
6825		- 'Authorization: Bearer ' . $openrouter_api_key,
6826		- 'HTTP-Referer: ' . home_url(),
6827		- 'X-Title: ' . get_bloginfo('name')
6828		- ));
6829		- curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
6830		- curl_setopt($ch, CURLOPT_TIMEOUT, 60);
6831		-
6832		- $full_response = '';
6833		- $stream_started = false;
6834		- $buffer = '';
6835		-
6836		- curl_setopt($ch, CURLOPT_WRITEFUNCTION, function($ch, $data) use (&$full_response, &$stream_started, &$buffer, $testing_data) {
6837		- if (!$stream_started && $testing_data !== null) {
6838		- echo "data: " . json_encode(['testing_data' => $testing_data]) . "\n\n";
6839		- flush();
6840		- $stream_started = true;
6841		- }
6842		-
6843		- $buffer .= $data;
6844		- $lines = explode("\n", $buffer);
6845		- $buffer = array_pop($lines);
6846		-
6847		- foreach ($lines as $line) {
6848		- if (trim($line) === '') {
6849		- continue;
6850		- }
6851		-
6852		- if (strpos($line, 'data: ') !== 0) {
6853		- continue;
6854		- }
6855		-
6856		- $json_str = substr($line, 6);
6857		-
6858		- if (trim($json_str) === '[DONE]') {
6859		- echo "data: [DONE]\n\n";
6860		- flush();
6861		- continue;
6862		- }
6863		-
6864		- $json = json_decode(trim($json_str), true);
6865		- if ($json && isset($json['choices'][0]['delta']['content'])) {
6866		- $content = $json['choices'][0]['delta']['content'];
6867		- $full_response .= $content;
6868		-
6869		- echo "data: " . json_encode(['content' => $content]) . "\n\n";
6870		- flush();
6871		- }
6872		- }
6873		-
6874		- return strlen($data);
6875		- });
6876		-
6877		- $response = curl_exec($ch);
6878		- $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
6879		-
6880		- if (curl_errno($ch) || $http_code !== 200) {
6881		- curl_close($ch);
6882		-
6883		- $regular_response = $this->mxchat_generate_response_openrouter(
6884		- $selected_model,
6885		- $openrouter_api_key,
6886		- $conversation_history,
6887		- $relevant_content
6888		- );
6889		-
6890		- $response_data = [
6891		- 'text' => $regular_response,
6892		- 'html' => '',
6893		- 'session_id' => $session_id
6894		- ];
6895		-
6896		- if ($testing_data !== null) {
6897		- $response_data['testing_data'] = $testing_data;
6898		- }
6899		-
6900		- header('Content-Type: application/json');
6901		- echo json_encode($response_data);
6902		- return true;
6903		- }
6904		-
6905		- curl_close($ch);
6906		-
6907		- if (!empty($full_response) && !empty($session_id)) {
6908		- // Prepare RAG context for streaming response
6909		- $rag_context_for_storage = null;
6910		- $has_rag_data = $this->last_similarity_analysis !== null && !empty($this->last_similarity_analysis['top_matches']);
6911		- $has_action_data = isset($this->last_action_analysis) && !empty($this->last_action_analysis);
6912		-
6913		- if ($has_rag_data || $has_action_data) {
6914		- $rag_context_for_storage = [];
6915		-
6916		- if ($has_rag_data) {
6917		- $rag_context_for_storage['top_matches'] = $this->last_similarity_analysis['top_matches'];
6918		- $rag_context_for_storage['approved_urls'] = $this->current_valid_urls ?? [];
6919		- $rag_context_for_storage['similarity_threshold'] = $this->last_similarity_analysis['threshold_used'] ?? 0.35;
6920		- $rag_context_for_storage['knowledge_base_type'] = $this->last_similarity_analysis['knowledge_base_type'] ?? 'WordPress Database';
6921		- $rag_context_for_storage['total_documents_checked'] = $this->last_similarity_analysis['total_checked'] ?? 0;
6922		- }
6923		-
6924		- if ($has_action_data) {
6925		- $rag_context_for_storage['action_analysis'] = $this->last_action_analysis;
6926		- }
6927		- }
6928		- $this->mxchat_save_chat_message($session_id, 'bot', $full_response, null, $rag_context_for_storage);
6929		- }
6930		-
6931		- return true;
6932		-
6933		- } catch (Exception $e) {
6934		- $regular_response = $this->mxchat_generate_response_openrouter(
6935		- $selected_model,
6936		- $openrouter_api_key,
6937		- $conversation_history,
6938		- $relevant_content
6939		- );
6940		-
6941		- $response_data = [
6942		- 'text' => $regular_response,
6943		- 'html' => '',
6944		- 'session_id' => $session_id
6945		- ];
6946		-
6947		- if ($testing_data !== null) {
6948		- $response_data['testing_data'] = $testing_data;
6949		- }
6950		-
6951		- header('Content-Type: application/json');
6952		- echo json_encode($response_data);
6953		- return true;
6954		- }
6955		-}
6956		-private function mxchat_generate_response_openai_stream($selected_model, $api_key, $conversation_history, $relevant_content, $session_id, $testing_data = null) {
6957		- try {
6958		- $bot_id = $this->get_current_bot_id($session_id);
6959		-
6960		- // Get system prompt instructions using centralized function
6961		- $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
6962		-
6963		- // Ensure conversation_history is an array
6964		- if (!is_array($conversation_history)) {
6965		- $conversation_history = array();
6966		- }
6967		-
6968		- // Format conversation history for OpenAI
6969		- $formatted_conversation = array();
6970		-
6971		- $formatted_conversation[] = array(
6972		- 'role' => 'system',
6973		- 'content' => $system_prompt_instructions . " " . $relevant_content
6974		- );
6975		-
6976		- foreach ($conversation_history as $message) {
6977		- if (is_array($message) && isset($message['role']) && isset($message['content'])) {
6978		- $role = $message['role'];
6979		- if ($role === 'bot' || $role === 'agent') {
6980		- $role = 'assistant';
6981		- }
6982		- if (!in_array($role, ['system', 'assistant', 'user', 'function', 'tool'])) {
6983		- $role = 'user';
6984		- }
6985		- $formatted_conversation[] = array(
6986		- 'role' => $role,
6987		- 'content' => $message['content']
6988		- );
6989		- }
6990		- }
6991		-
6992		- // Check if we can actually stream
6993		- if (headers_sent() || !function_exists('curl_init')) {
6994		- // Fallback to regular response with testing data
6995		- $regular_response = $this->mxchat_generate_response_openai(
6996		- $selected_model,
6997		- $api_key,
6998		- $conversation_history,
6999		- $relevant_content
7000		- );
7001		-
7002		- // Save bot response to transcript
7003		- if (!empty($regular_response) && !empty($session_id)) {
7004		- $this->mxchat_save_chat_message($session_id, 'bot', $regular_response);
7005		- }
7006		-
7007		- $response_data = [
7008		- 'text' => $regular_response,
7009		- 'html' => '',
7010		- 'session_id' => $session_id
7011		- ];
7012		-
7013		- if ($testing_data !== null) {
7014		- $response_data['testing_data'] = $testing_data;
7015		- }
7016		-
7017		- header('Content-Type: application/json');
7018		- echo json_encode($response_data);
7019		- return true;
7020		- }
7021		-
7022		- // Check if this is a GPT-5 model (supports reasoning_effort parameter)
7023		- $is_gpt5_model = (
7024		- strpos($selected_model, 'gpt-5') === 0 ||
7025		- $selected_model === 'gpt-5.2' ||
7026		- $selected_model === 'gpt-5.1-2025-11-13' ||
7027		- $selected_model === 'gpt-5' ||
7028		- $selected_model === 'gpt-5-mini' ||
7029		- $selected_model === 'gpt-5-nano'
7030		- );
7031		-
7032		- // Build request body with optimal settings for fast streaming
7033		- $request_body = [
7034		- 'model' => $selected_model,
7035		- 'messages' => $formatted_conversation,
7036		- 'temperature' => 1,
7037		- 'stream' => true
7038		- ];
7039		-
7040		- // Add reasoning_effort only for GPT-5 models that support it
7041		- // These chat models don't support reasoning_effort parameter
7042		- $no_reasoning_models = array('gpt-5.2', 'gpt-5.1-chat-latest', 'gpt-5.3-chat-latest', 'gpt-5.4-mini', 'gpt-5.4-nano');
7043		- if ($is_gpt5_model && !in_array($selected_model, $no_reasoning_models, true)) {
7044		- // GPT-5.1 uses 'low' instead of 'minimal'
7045		- if ($selected_model === 'gpt-5.1-2025-11-13') {
7046		- $request_body['reasoning_effort'] = 'low';
7047		- } elseif ($selected_model === 'gpt-5.4') {
7048		- $request_body['reasoning_effort'] = 'none';
7049		- } else {
7050		- $request_body['reasoning_effort'] = 'minimal';
7051		- }
7052		- }
7053		-
7054		- $body = json_encode($request_body);
7055		-
7056		- // Setup streaming headers now that we know we're actually streaming
7057		- $this->setup_streaming_headers();
7058		-
7059		- // Use cURL for streaming support
7060		- $ch = curl_init();
7061		- curl_setopt($ch, CURLOPT_URL, 'https://api.openai.com/v1/chat/completions');
7062		- curl_setopt($ch, CURLOPT_RETURNTRANSFER, false);
7063		- curl_setopt($ch, CURLOPT_POST, true);
7064		- curl_setopt($ch, CURLOPT_POSTFIELDS, $body);
7065		- curl_setopt($ch, CURLOPT_HTTPHEADER, array(
7066		- 'Content-Type: application/json',
7067		- 'Authorization: Bearer ' . $api_key
7068		- ));
7069		- curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
7070		- curl_setopt($ch, CURLOPT_TIMEOUT, 60);
7071		-
7072		- $full_response = ''; // Accumulate full response for saving
7073		- $stream_started = false;
7074		- $buffer = ''; // CRITICAL: Add persistent buffer for incomplete chunks
7075		-
7076		- // Buffer control for real-time streaming
7077		- curl_setopt($ch, CURLOPT_WRITEFUNCTION, function($ch, $data) use (&$full_response, &$stream_started, &$buffer, $testing_data) {
7078		- // Send testing data as the first event if available
7079		- if (!$stream_started && $testing_data !== null) {
7080		- echo "data: " . json_encode(['testing_data' => $testing_data]) . "\n\n";
7081		- flush();
7082		- $stream_started = true;
7083		- }
7084		-
7085		- // CRITICAL FIX: Append new data to buffer
7086		- $buffer .= $data;
7087		-
7088		- // Process complete lines only
7089		- $lines = explode("\n", $buffer);
7090		-
7091		- // CRITICAL FIX: Keep the last incomplete line in the buffer
7092		- // The last element might be incomplete, so keep it in buffer
7093		- $buffer = array_pop($lines);
7094		-
7095		- foreach ($lines as $line) {
7096		- // Skip empty lines
7097		- if (trim($line) === '') {
7098		- continue;
7099		- }
7100		-
7101		- // Only process lines that start with "data: "
7102		- if (strpos($line, 'data: ') !== 0) {
7103		- continue;
7104		- }
7105		-
7106		- $json_str = substr($line, 6); // Remove 'data: ' prefix
7107		-
7108		- if (trim($json_str) === '[DONE]') {
7109		- echo "data: [DONE]\n\n";
7110		- flush();
7111		- continue;
7112		- }
7113		-
7114		- // Try to decode JSON
7115		- $json = json_decode(trim($json_str), true);
7116		- if ($json && isset($json['choices'][0]['delta']['content'])) {
7117		- $content = $json['choices'][0]['delta']['content'];
7118		- $full_response .= $content; // Accumulate the full response
7119		-
7120		- // Send as SSE format
7121		- echo "data: " . json_encode(['content' => $content]) . "\n\n";
7122		- flush();
7123		- }
7124		- }
7125		-
7126		- return strlen($data);
7127		- });
7128		-
7129		- $response = curl_exec($ch);
7130		- $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
7131		-
7132		- if (curl_errno($ch) || $http_code !== 200) {
7133		- $curl_error = curl_error($ch);
7134		- curl_close($ch);
7135		-
7136		- // Fallback to regular response
7137		- $regular_response = $this->mxchat_generate_response_openai(
7138		- $selected_model,
7139		- $api_key,
7140		- $conversation_history,
7141		- $relevant_content
7142		- );
7143		-
7144		- // FIXED: Check if regular response returned an error
7145		- if (is_array($regular_response) && isset($regular_response['error'])) {
7146		- // Send error in SSE format since we're in streaming mode
7147		- echo "data: " . json_encode([
7148		- 'error' => true,
7149		- 'error_message' => $regular_response['error'],
7150		- 'error_code' => $regular_response['error_code'] ?? 'api_error',
7151		- 'text' => $regular_response['error'],
7152		- 'message' => $regular_response['error']
7153		- ]) . "\n\n";
7154		- echo "data: [DONE]\n\n";
7155		- flush();
7156		- return true;
7157		- }
7158		-
7159		- $response_data = [
7160		- 'text' => $regular_response,
7161		- 'html' => '',
7162		- 'session_id' => $session_id
7163		- ];
7164		-
7165		- if ($testing_data !== null) {
7166		- $response_data['testing_data'] = $testing_data;
7167		- }
7168		-
7169		- header('Content-Type: application/json');
7170		- echo json_encode($response_data);
7171		- return true;
7172		- }
7173		-
7174		- curl_close($ch);
7175		-
7176		- // Save the complete response to maintain chat persistence
7177		- if (!empty($full_response) && !empty($session_id)) {
7178		- // Prepare RAG context for streaming response
7179		- $rag_context_for_storage = null;
7180		- $has_rag_data = $this->last_similarity_analysis !== null && !empty($this->last_similarity_analysis['top_matches']);
7181		- $has_action_data = isset($this->last_action_analysis) && !empty($this->last_action_analysis);
7182		-
7183		- if ($has_rag_data || $has_action_data) {
7184		- $rag_context_for_storage = [];
7185		-
7186		- if ($has_rag_data) {
7187		- $rag_context_for_storage['top_matches'] = $this->last_similarity_analysis['top_matches'];
7188		- $rag_context_for_storage['approved_urls'] = $this->current_valid_urls ?? [];
7189		- $rag_context_for_storage['similarity_threshold'] = $this->last_similarity_analysis['threshold_used'] ?? 0.35;
7190		- $rag_context_for_storage['knowledge_base_type'] = $this->last_similarity_analysis['knowledge_base_type'] ?? 'WordPress Database';
7191		- $rag_context_for_storage['total_documents_checked'] = $this->last_similarity_analysis['total_checked'] ?? 0;
7192		- }
7193		-
7194		- if ($has_action_data) {
7195		- $rag_context_for_storage['action_analysis'] = $this->last_action_analysis;
7196		- }
7197		- }
7198		- $this->mxchat_save_chat_message($session_id, 'bot', $full_response, null, $rag_context_for_storage);
7199		- }
7200		-
7201		- return true; // Indicate streaming completed successfully
7202		-
7203		- } catch (Exception $e) {
7204		- // Fallback to regular response
7205		- $regular_response = $this->mxchat_generate_response_openai(
7206		- $selected_model,
7207		- $api_key,
7208		- $conversation_history,
7209		- $relevant_content
7210		- );
7211		-
7212		- // FIXED: Check if regular response returned an error
7213		- if (is_array($regular_response) && isset($regular_response['error'])) {
7214		- // Send error in SSE format since we're in streaming mode
7215		- echo "data: " . json_encode([
7216		- 'error' => true,
7217		- 'error_message' => $regular_response['error'],
7218		- 'error_code' => $regular_response['error_code'] ?? 'api_error',
7219		- 'text' => $regular_response['error'],
7220		- 'message' => $regular_response['error']
7221		- ]) . "\n\n";
7222		- echo "data: [DONE]\n\n";
7223		- flush();
7224		- return true;
7225		- }
7226		-
7227		- $response_data = [
7228		- 'text' => $regular_response,
7229		- 'html' => '',
7230		- 'session_id' => $session_id
7231		- ];
7232		-
7233		- if ($testing_data !== null) {
7234		- $response_data['testing_data'] = $testing_data;
7235		- }
7236		-
7237		- header('Content-Type: application/json');
7238		- echo json_encode($response_data);
7239		- return true;
7240		- }
7241		-}
7242		-
7243		-/**
7244		- * Generate response using OpenAI Responses API with web search tool
7245		- * This uses the newer Responses API which supports web search functionality
7246		- */
7247		-private function mxchat_generate_response_openai_web_search($selected_model, $api_key, $conversation_history, $relevant_content, $session_id, $testing_data = null, $streaming = false) {
7248		- try {
7249		- $bot_id = $this->get_current_bot_id($session_id);
7250		- $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
7251		-
7252		- if (!is_array($conversation_history)) {
7253		- $conversation_history = array();
7254		- }
7255		-
7256		- // Build the input for Responses API
7257		- // The Responses API uses a different format - we need to construct the input properly
7258		- $input_parts = [];
7259		-
7260		- // Add system instructions as context
7261		- $system_context = $system_prompt_instructions . "\n\n" . $relevant_content;
7262		-
7263		- // Build conversation as input items for Responses API
7264		- foreach ($conversation_history as $message) {
7265		- if (is_array($message) && isset($message['role']) && isset($message['content'])) {
7266		- $role = $message['role'];
7267		- if ($role === 'bot' || $role === 'agent') {
7268		- $role = 'assistant';
7269		- }
7270		- if (!in_array($role, ['assistant', 'user'])) {
7271		- $role = 'user';
7272		- }
7273		- $input_parts[] = [
7274		- 'type' => 'message',
7275		- 'role' => $role,
7276		- 'content' => $message['content']
7277		- ];
7278		- }
7279		- }
7280		-
7281		- // Build request body for Responses API
7282		- $request_body = [
7283		- 'model' => $selected_model,
7284		- 'input' => $input_parts,
7285		- 'instructions' => $system_context,
7286		- 'stream' => $streaming
7287		- ];
7288		-
7289		- // Only add web search tool if web search is enabled in settings
7290		- $web_search_enabled = isset($this->options['enable_web_search']) && $this->options['enable_web_search'] === 'on';
7291		- if ($web_search_enabled) {
7292		- $request_body['tools'] = [
7293		- ['type' => 'web_search']
7294		- ];
7295		- }
7296		-
7297		- // Add reasoning effort for supported models
7298		- $is_gpt5_model = strpos($selected_model, 'gpt-5') === 0;
7299		- $no_reasoning_web = array('gpt-5.2', 'gpt-5.3-chat-latest', 'gpt-5.4-mini', 'gpt-5.4-nano');
7300		- if ($is_gpt5_model && !in_array($selected_model, $no_reasoning_web, true)) {
7301		- if ($selected_model === 'gpt-5.1-2025-11-13') {
7302		- $request_body['reasoning'] = ['effort' => 'low'];
7303		- } elseif ($selected_model === 'gpt-5.4') {
7304		- $request_body['reasoning'] = ['effort' => 'low'];
7305		- }
7306		- }
7307		-
7308		- //error_log("MXCHAT WEB SEARCH: Request body: " . json_encode($request_body));
7309		-
7310		- if ($streaming) {
7311		- return $this->mxchat_web_search_streaming_response($request_body, $api_key, $session_id, $testing_data);
7312		- } else {
7313		- return $this->mxchat_web_search_non_streaming_response($request_body, $api_key, $session_id, $testing_data);
7314		- }
7315		-
7316		- } catch (Exception $e) {
7317		- //error_log("MXCHAT WEB SEARCH ERROR: " . $e->getMessage());
7318		- return [
7319		- 'error' => sprintf(esc_html__('Web search error: %s', 'mxchat'), esc_html($e->getMessage())),
7320		- 'error_code' => 'web_search_exception'
7321		- ];
7322		- }
7323		-}
7324		-
7325		-/**
7326		- * Handle non-streaming web search response
7327		- */
7328		-private function mxchat_web_search_non_streaming_response($request_body, $api_key, $session_id, $testing_data) {
7329		- $request_body['stream'] = false;
7330		-
7331		- $response = wp_remote_post('https://api.openai.com/v1/responses', array(
7332		- 'headers' => array(
7333		- 'Authorization' => 'Bearer ' . $api_key,
7334		- 'Content-Type' => 'application/json'
7335		- ),
7336		- 'body' => json_encode($request_body),
7337		- 'timeout' => 90
7338		- ));
7339		-
7340		- if (is_wp_error($response)) {
7341		- //error_log("MXCHAT WEB SEARCH ERROR: WP Error: " . $response->get_error_message());
7342		- return [
7343		- 'error' => esc_html__('Failed to connect to OpenAI web search API', 'mxchat'),
7344		- 'error_code' => 'web_search_connection_error'
7345		- ];
7346		- }
7347		-
7348		- $response_code = wp_remote_retrieve_response_code($response);
7349		- $response_body = wp_remote_retrieve_body($response);
7350		-
7351		- //error_log("MXCHAT WEB SEARCH: Response code: " . $response_code);
7352		- //error_log("MXCHAT WEB SEARCH: Response body (first 2000): " . substr($response_body, 0, 2000));
7353		-
7354		- if ($response_code !== 200) {
7355		- $error_data = json_decode($response_body, true);
7356		- $error_message = $error_data['error']['message'] ?? 'Unknown API error';
7357		- return [
7358		- 'error' => sprintf(esc_html__('OpenAI API error: %s', 'mxchat'), esc_html($error_message)),
7359		- 'error_code' => 'web_search_api_error'
7360		- ];
7361		- }
7362		-
7363		- $result = json_decode($response_body, true);
7364		-
7365		- if (json_last_error() !== JSON_ERROR_NONE) {
7366		- return [
7367		- 'error' => esc_html__('Invalid response from OpenAI', 'mxchat'),
7368		- 'error_code' => 'web_search_json_error'
7369		- ];
7370		- }
7371		-
7372		- // Extract the response text and citations from Responses API format
7373		- $output_text = '';
7374		- $citations = [];
7375		-
7376		- if (isset($result['output'])) {
7377		- foreach ($result['output'] as $output_item) {
7378		- if ($output_item['type'] === 'message' && isset($output_item['content'])) {
7379		- foreach ($output_item['content'] as $content_item) {
7380		- if ($content_item['type'] === 'output_text') {
7381		- $output_text .= $content_item['text'];
7382		-
7383		- // Extract citations/annotations
7384		- if (isset($content_item['annotations'])) {
7385		- foreach ($content_item['annotations'] as $annotation) {
7386		- if ($annotation['type'] === 'url_citation') {
7387		- $citations[] = [
7388		- 'url' => $annotation['url'],
7389		- 'title' => $annotation['title'] ?? ''
7390		- ];
7391		- }
7392		- }
7393		- }
7394		- }
7395		- }
7396		- }
7397		- }
7398		- }
7399		-
7400		- // If we have citations, append them to the response
7401		- if (!empty($citations)) {
7402		- $output_text .= "\n\n**Sources:**\n";
7403		- $seen_urls = [];
7404		- foreach ($citations as $citation) {
7405		- if (!in_array($citation['url'], $seen_urls)) {
7406		- $seen_urls[] = $citation['url'];
7407		- $title = !empty($citation['title']) ? $citation['title'] : $citation['url'];
7408		- $output_text .= "- [" . $title . "](" . $citation['url'] . ")\n";
7409		- }
7410		- }
7411		- }
7412		-
7413		- // Transcript save is handled by the main handler (mxchat_handle_chat_request)
7414		- // which includes rag_context for the "sources" link in transcripts.
7415		-
7416		- return $output_text;
7417		-}
7418		-
7419		-/**
7420		- * Handle streaming web search response using Responses API
7421		- */
7422		-private function mxchat_web_search_streaming_response($request_body, $api_key, $session_id, $testing_data) {
7423		- $request_body['stream'] = true;
7424		-
7425		- // Check if we can stream
7426		- if (headers_sent() || !function_exists('curl_init')) {
7427		- // Fallback to non-streaming
7428		- return $this->mxchat_web_search_non_streaming_response($request_body, $api_key, $session_id, $testing_data);
7429		- }
7430		-
7431		- // Setup streaming headers
7432		- $this->setup_streaming_headers();
7433		-
7434		- $ch = curl_init();
7435		- curl_setopt($ch, CURLOPT_URL, 'https://api.openai.com/v1/responses');
7436		- curl_setopt($ch, CURLOPT_RETURNTRANSFER, false);
7437		- curl_setopt($ch, CURLOPT_POST, true);
7438		- curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($request_body));
7439		- curl_setopt($ch, CURLOPT_HTTPHEADER, array(
7440		- 'Content-Type: application/json',
7441		- 'Authorization: Bearer ' . $api_key
7442		- ));
7443		- curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
7444		- curl_setopt($ch, CURLOPT_TIMEOUT, 120);
7445		-
7446		- $full_response = '';
7447		- $stream_started = false;
7448		- $buffer = '';
7449		- $citations = [];
7450		-
7451		- curl_setopt($ch, CURLOPT_WRITEFUNCTION, function($ch, $data) use (&$full_response, &$stream_started, &$buffer, &$citations, $testing_data) {
7452		- // Send testing data as first event if available
7453		- if (!$stream_started && $testing_data !== null) {
7454		- echo "data: " . json_encode(['testing_data' => $testing_data]) . "\n\n";
7455		- flush();
7456		- $stream_started = true;
7457		- }
7458		-
7459		- $buffer .= $data;
7460		- $lines = explode("\n", $buffer);
7461		- $buffer = array_pop($lines);
7462		-
7463		- foreach ($lines as $line) {
7464		- if (trim($line) === '') continue;
7465		- if (strpos($line, 'data: ') !== 0) continue;
7466		-
7467		- $json_str = substr($line, 6);
7468		-
7469		- if (trim($json_str) === '[DONE]') {
7470		- // Append citations if we have any
7471		- if (!empty($citations)) {
7472		- $citation_text = "\n\n**Sources:**\n";
7473		- $seen_urls = [];
7474		- foreach ($citations as $citation) {
7475		- if (!in_array($citation['url'], $seen_urls)) {
7476		- $seen_urls[] = $citation['url'];
7477		- $title = !empty($citation['title']) ? $citation['title'] : $citation['url'];
7478		- $citation_text .= "- [" . $title . "](" . $citation['url'] . ")\n";
7479		- }
7480		- }
7481		- echo "data: " . json_encode(['content' => $citation_text]) . "\n\n";
7482		- $full_response .= $citation_text;
7483		- flush();
7484		- }
7485		- echo "data: [DONE]\n\n";
7486		- flush();
7487		- continue;
7488		- }
7489		-
7490		- $json = json_decode(trim($json_str), true);
7491		- if (!$json) continue;
7492		-
7493		- // Handle Responses API streaming events
7494		- // The format is different from Chat Completions
7495		- if (isset($json['type'])) {
7496		- switch ($json['type']) {
7497		- case 'response.output_text.delta':
7498		- // Text content delta
7499		- if (isset($json['delta'])) {
7500		- $content = $json['delta'];
7501		- $full_response .= $content;
7502		- echo "data: " . json_encode(['content' => $content]) . "\n\n";
7503		- flush();
7504		- }
7505		- break;
7506		-
7507		- case 'response.output_item.done':
7508		- // Check for citations in completed items
7509		- if (isset($json['item']['content'])) {
7510		- foreach ($json['item']['content'] as $content_item) {
7511		- if (isset($content_item['annotations'])) {
7512		- foreach ($content_item['annotations'] as $annotation) {
7513		- if ($annotation['type'] === 'url_citation') {
7514		- $citations[] = [
7515		- 'url' => $annotation['url'],
7516		- 'title' => $annotation['title'] ?? ''
7517		- ];
7518		- }
7519		- }
7520		- }
7521		- }
7522		- }
7523		- break;
7524		- }
7525		- }
7526		- }
7527		-
7528		- return strlen($data);
7529		- });
7530		-
7531		- $response = curl_exec($ch);
7532		- $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
7533		-
7534		- if (curl_errno($ch) || $http_code !== 200) {
7535		- $curl_error = curl_error($ch);
7536		- curl_close($ch);
7537		-
7538		- //error_log("MXCHAT WEB SEARCH STREAM ERROR: HTTP $http_code, cURL error: $curl_error");
7539		-
7540		- // Fallback to non-streaming
7541		- $fallback_response = $this->mxchat_web_search_non_streaming_response($request_body, $api_key, $session_id, $testing_data);
7542		-
7543		- if (is_array($fallback_response) && isset($fallback_response['error'])) {
7544		- echo "data: " . json_encode([
7545		- 'error' => true,
7546		- 'error_message' => $fallback_response['error'],
7547		- 'error_code' => $fallback_response['error_code'] ?? 'web_search_error'
7548		- ]) . "\n\n";
7549		- echo "data: [DONE]\n\n";
7550		- flush();
7551		- return true;
7552		- }
7553		-
7554		- $response_data = [
7555		- 'text' => $fallback_response,
7556		- 'html' => '',
7557		- 'session_id' => $session_id
7558		- ];
7559		- if ($testing_data !== null) {
7560		- $response_data['testing_data'] = $testing_data;
7561		- }
7562		- header('Content-Type: application/json');
7563		- echo json_encode($response_data);
7564		- return true;
7565		- }
7566		-
7567		- curl_close($ch);
7568		-
7569		- // Save the complete response with RAG context so the "sources" link
7570		- // appears in transcripts — mirrors the pattern used by Claude/OpenAI streaming.
7571		- if (!empty($full_response) && !empty($session_id)) {
7572		- $rag_context_for_storage = null;
7573		- $has_rag_data = $this->last_similarity_analysis !== null && !empty($this->last_similarity_analysis['top_matches']);
7574		- $has_action_data = isset($this->last_action_analysis) && !empty($this->last_action_analysis);
7575		-
7576		- if ($has_rag_data || $has_action_data) {
7577		- $rag_context_for_storage = [];
7578		-
7579		- if ($has_rag_data) {
7580		- $rag_context_for_storage['top_matches'] = $this->last_similarity_analysis['top_matches'];
7581		- $rag_context_for_storage['approved_urls'] = $this->current_valid_urls ?? [];
7582		- $rag_context_for_storage['similarity_threshold'] = $this->last_similarity_analysis['threshold_used'] ?? 0.35;
7583		- $rag_context_for_storage['knowledge_base_type'] = $this->last_similarity_analysis['knowledge_base_type'] ?? 'WordPress Database';
7584		- $rag_context_for_storage['total_documents_checked'] = $this->last_similarity_analysis['total_checked'] ?? 0;
7585		- }
7586		-
7587		- if ($has_action_data) {
7588		- $rag_context_for_storage['action_analysis'] = $this->last_action_analysis;
7589		- }
7590		- }
7591		- $this->mxchat_save_chat_message($session_id, 'bot', $full_response, null, $rag_context_for_storage);
7592		- }
7593		-
7594		- return true;
7595		-}
7596		-
7597		-private function mxchat_generate_response_claude_stream($selected_model, $claude_api_key, $conversation_history, $relevant_content, $session_id, $testing_data = null) {
7598		- try {
7599		- // Get bot ID from session or request
7600		- $bot_id = $this->get_current_bot_id($session_id);
7601		-
7602		- // Get system prompt instructions using centralized function
7603		- $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
7604		- // Ensure conversation_history is an array
7605		- if (!is_array($conversation_history)) {
7606		- $conversation_history = array();
7607		- }
7608		-
7609		- // Clean and validate conversation history
7610		- foreach ($conversation_history as &$message) {
7611		- // Convert bot and agent roles to assistant
7612		- if ($message['role'] === 'bot' || $message['role'] === 'agent') {
7613		- $message['role'] = 'assistant';
7614		- }
7615		-
7616		- // Remove unsupported roles - Claude only supports 'assistant' and 'user'
7617		- if (!in_array($message['role'], ['assistant', 'user'])) {
7618		- $message['role'] = 'user';
7619		- }
7620		-
7621		- // Ensure content field exists
7622		- if (!isset($message['content']) || empty($message['content'])) {
7623		- $message['content'] = '';
7624		- }
7625		-
7626		- // Remove any unsupported fields
7627		- $message = array_intersect_key($message, array_flip(['role', 'content']));
7628		- }
7629		-
7630		- // Add relevant content as the latest user message
7631		- $conversation_history[] = [
7632		- 'role' => 'user',
7633		- 'content' => $relevant_content
7634		- ];
7635		-
7636		- // Prepare the request body with stream: true
7637		- $body = json_encode([
7638		- 'model' => $selected_model,
7639		- 'messages' => $conversation_history,
7640		- 'max_tokens' => 1000,
7641		- 'temperature' => 0.8,
7642		- 'system' => $system_prompt_instructions,
7643		- 'stream' => true
7644		- ]);
7645		-
7646		- // Check if we can actually stream (headers not sent, etc.)
7647		- if (headers_sent() || !function_exists('curl_init')) {
7648		- // Fallback to regular response with testing data
7649		- //error_log("MxChat: Streaming not possible, falling back to regular response");
7650		- $regular_response = $this->mxchat_generate_response_claude(
7651		- $selected_model,
7652		- $claude_api_key,
7653		- array_slice($conversation_history, 0, -1), // Remove the added content
7654		- $relevant_content
7655		- );
7656		-
7657		- // Save bot response to transcript
7658		- if (!empty($regular_response) && !empty($session_id)) {
7659		- $this->mxchat_save_chat_message($session_id, 'bot', $regular_response);
7660		- }
7661		-
7662		- // Return as JSON with testing data
7663		- $response_data = [
7664		- 'text' => $regular_response,
7665		- 'html' => '',
7666		- 'session_id' => $session_id
7667		- ];
7668		-
7669		- if ($testing_data !== null) {
7670		- $response_data['testing_data'] = $testing_data;
7671		- //error_log("MxChat Testing: Added testing data to Claude fallback response");
7672		- }
7673		-
7674		- // Clear any streaming headers and send JSON
7675		- if (headers_sent() === false) {
7676		- header('Content-Type: application/json');
7677		- }
7678		- echo json_encode($response_data);
7679		- return true; // Indicate we handled the response
7680		- }
7681		-
7682		- // Setup streaming headers now that we know we're actually streaming
7683		- $this->setup_streaming_headers();
7684		-
7685		- // Use cURL for streaming support
7686		- $ch = curl_init();
7687		- curl_setopt($ch, CURLOPT_URL, 'https://api.anthropic.com/v1/messages');
7688		- curl_setopt($ch, CURLOPT_RETURNTRANSFER, false);
7689		- curl_setopt($ch, CURLOPT_POST, true);
7690		- curl_setopt($ch, CURLOPT_POSTFIELDS, $body);
7691		- curl_setopt($ch, CURLOPT_HTTPHEADER, array(
7692		- 'Content-Type: application/json',
7693		- 'x-api-key: ' . $claude_api_key,
7694		- 'anthropic-version: 2023-06-01'
7695		- ));
7696		- curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
7697		- curl_setopt($ch, CURLOPT_TIMEOUT, 60);
7698		-
7699		- $full_response = ''; // Accumulate full response for saving
7700		- $stream_started = false;
7701		- $buffer = ''; // CRITICAL: Add persistent buffer for incomplete chunks
7702		-
7703		- // Buffer control for real-time streaming
7704		- curl_setopt($ch, CURLOPT_WRITEFUNCTION, function($ch, $data) use (&$full_response, &$stream_started, &$buffer, $testing_data) {
7705		- // Send testing data as the first event if available
7706		- if (!$stream_started && $testing_data !== null) {
7707		- echo "data: " . json_encode(['testing_data' => $testing_data]) . "\n\n";
7708		- flush();
7709		- $stream_started = true;
7710		- //error_log("MxChat Testing: Sent testing data in Claude stream");
7711		- }
7712		-
7713		- // CRITICAL FIX: Append new data to buffer
7714		- $buffer .= $data;
7715		-
7716		- // Process complete lines only
7717		- $lines = explode("\n", $buffer);
7718		-
7719		- // CRITICAL FIX: Keep the last incomplete line in the buffer
7720		- // The last element might be incomplete, so keep it in buffer
7721		- $buffer = array_pop($lines);
7722		-
7723		- foreach ($lines as $line) {
7724		- if (trim($line) === '') {
7725		- continue;
7726		- }
7727		-
7728		- // Claude uses event: and data: format
7729		- if (strpos($line, 'event: ') === 0) {
7730		- // Store the event type for the next data line
7731		- continue;
7732		- }
7733		-
7734		- if (strpos($line, 'data: ') === 0) {
7735		- $json_str = substr($line, 6); // Remove 'data: ' prefix
7736		-
7737		- $json = json_decode(trim($json_str), true);
7738		- if (json_last_error() !== JSON_ERROR_NONE) {
7739		- continue;
7740		- }
7741		-
7742		- // Handle different event types
7743		- if (isset($json['type'])) {
7744		- switch ($json['type']) {
7745		- case 'content_block_delta':
7746		- if (isset($json['delta']['text'])) {
7747		- $content = $json['delta']['text'];
7748		- $full_response .= $content; // Accumulate
7749		- // Send as SSE format compatible with your frontend
7750		- echo "data: " . json_encode(['content' => $content]) . "\n\n";
7751		- flush();
7752		- }
7753		- break;
7754		-
7755		- case 'message_stop':
7756		- echo "data: [DONE]\n\n";
7757		- flush();
7758		- break;
7759		-
7760		- case 'error':
7761		- echo "data: " . json_encode(['error' => $json['error']['message'] ?? 'Unknown error']) . "\n\n";
7762		- flush();
7763		- break;
7764		- }
7765		- }
7766		- }
7767		- }
7768		-
7769		- return strlen($data);
7770		- });
7771		-
7772		- $response = curl_exec($ch);
7773		- $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
7774		-
7775		- if (curl_errno($ch)) {
7776		- curl_close($ch);
7777		- throw new Exception('cURL Error: ' . curl_error($ch));
7778		- }
7779		-
7780		- curl_close($ch);
7781		-
7782		- if ($http_code !== 200) {
7783		- // Fallback to regular response
7784		- //error_log("MxChat: Claude streaming failed with HTTP $http_code, falling back");
7785		- $regular_response = $this->mxchat_generate_response_claude(
7786		- $selected_model,
7787		- $claude_api_key,
7788		- array_slice($conversation_history, 0, -1), // Remove the added content
7789		- $relevant_content
7790		- );
7791		-
7792		- // FIXED: Check if regular response returned an error
7793		- if (is_array($regular_response) && isset($regular_response['error'])) {
7794		- // Send error in SSE format since we're in streaming mode
7795		- echo "data: " . json_encode([
7796		- 'error' => true,
7797		- 'error_message' => $regular_response['error'],
7798		- 'error_code' => $regular_response['error_code'] ?? 'api_error',
7799		- 'text' => $regular_response['error'],
7800		- 'message' => $regular_response['error']
7801		- ]) . "\n\n";
7802		- echo "data: [DONE]\n\n";
7803		- flush();
7804		- return true;
7805		- }
7806		-
7807		- $response_data = [
7808		- 'text' => $regular_response,
7809		- 'html' => '',
7810		- 'session_id' => $session_id
7811		- ];
7812		-
7813		- if ($testing_data !== null) {
7814		- $response_data['testing_data'] = $testing_data;
7815		- //error_log("MxChat Testing: Added testing data to Claude error fallback");
7816		- }
7817		-
7818		- header('Content-Type: application/json');
7819		- echo json_encode($response_data);
7820		- return true;
7821		- }
7822		-
7823		- // Save the complete response to maintain chat persistence
7824		- if (!empty($full_response) && !empty($session_id)) {
7825		- // Prepare RAG context for streaming response
7826		- $rag_context_for_storage = null;
7827		- $has_rag_data = $this->last_similarity_analysis !== null && !empty($this->last_similarity_analysis['top_matches']);
7828		- $has_action_data = isset($this->last_action_analysis) && !empty($this->last_action_analysis);
7829		-
7830		- if ($has_rag_data || $has_action_data) {
7831		- $rag_context_for_storage = [];
7832		-
7833		- if ($has_rag_data) {
7834		- $rag_context_for_storage['top_matches'] = $this->last_similarity_analysis['top_matches'];
7835		- $rag_context_for_storage['approved_urls'] = $this->current_valid_urls ?? [];
7836		- $rag_context_for_storage['similarity_threshold'] = $this->last_similarity_analysis['threshold_used'] ?? 0.35;
7837		- $rag_context_for_storage['knowledge_base_type'] = $this->last_similarity_analysis['knowledge_base_type'] ?? 'WordPress Database';
7838		- $rag_context_for_storage['total_documents_checked'] = $this->last_similarity_analysis['total_checked'] ?? 0;
7839		- }
7840		-
7841		- if ($has_action_data) {
7842		- $rag_context_for_storage['action_analysis'] = $this->last_action_analysis;
7843		- }
7844		- }
7845		- $this->mxchat_save_chat_message($session_id, 'bot', $full_response, null, $rag_context_for_storage);
7846		- }
7847		-
7848		- return true; // Indicate streaming completed successfully
7849		-
7850		- } catch (Exception $e) {
7851		- //error_log("MxChat Claude streaming exception: " . $e->getMessage());
7852		-
7853		- // Fallback to regular response on exception
7854		- $regular_response = $this->mxchat_generate_response_claude(
7855		- $selected_model,
7856		- $claude_api_key,
7857		- $conversation_history,
7858		- $relevant_content
7859		- );
7860		-
7861		- // FIXED: Check if regular response returned an error
7862		- if (is_array($regular_response) && isset($regular_response['error'])) {
7863		- // Send error in SSE format since we're in streaming mode
7864		- echo "data: " . json_encode([
7865		- 'error' => true,
7866		- 'error_message' => $regular_response['error'],
7867		- 'error_code' => $regular_response['error_code'] ?? 'api_error',
7868		- 'text' => $regular_response['error'],
7869		- 'message' => $regular_response['error']
7870		- ]) . "\n\n";
7871		- echo "data: [DONE]\n\n";
7872		- flush();
7873		- return true;
7874		- }
7875		-
7876		- $response_data = [
7877		- 'text' => $regular_response,
7878		- 'html' => '',
7879		- 'session_id' => $session_id
7880		- ];
7881		-
7882		- if ($testing_data !== null) {
7883		- $response_data['testing_data'] = $testing_data;
7884		- //error_log("MxChat Testing: Added testing data to Claude exception fallback");
7885		- }
7886		-
7887		- header('Content-Type: application/json');
7888		- echo json_encode($response_data);
7889		- return true;
7890		- }
7891		-}
7892		-private function mxchat_generate_response_xai_stream($selected_model, $xai_api_key, $conversation_history, $relevant_content, $session_id, $testing_data = null) {
7893		- try {
7894		- // Get bot ID from session or request
7895		- $bot_id = $this->get_current_bot_id($session_id);
7896		-
7897		- // Get system prompt instructions using centralized function
7898		- $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
7899		-
7900		- // Ensure conversation_history is an array
7901		- if (!is_array($conversation_history)) {
7902		- $conversation_history = array();
7903		- }
7904		-
7905		- // Format conversation history for X.AI (same as OpenAI format)
7906		- $formatted_conversation = array();
7907		-
7908		- $formatted_conversation[] = array(
7909		- 'role' => 'system',
7910		- 'content' => $system_prompt_instructions . " " . $relevant_content
7911		- );
7912		-
7913		- foreach ($conversation_history as $message) {
7914		- if (is_array($message) && isset($message['role']) && isset($message['content'])) {
7915		- $role = $message['role'];
7916		- if ($role === 'bot' || $role === 'agent') {
7917		- $role = 'assistant';
7918		- }
7919		- if (!in_array($role, ['system', 'assistant', 'user', 'function', 'tool'])) {
7920		- $role = 'user';
7921		- }
7922		- $formatted_conversation[] = array(
7923		- 'role' => $role,
7924		- 'content' => $message['content']
7925		- );
7926		- }
7927		- }
7928		-
7929		- // Check if we can actually stream
7930		- if (headers_sent() || !function_exists('curl_init')) {
7931		- // Fallback to regular response with testing data
7932		- //error_log("MxChat: X.AI streaming not possible, falling back to regular response");
7933		- $regular_response = $this->mxchat_generate_response_xai(
7934		- $selected_model,
7935		- $xai_api_key,
7936		- $conversation_history,
7937		- $relevant_content
7938		- );
7939		-
7940		- // Save bot response to transcript
7941		- if (!empty($regular_response) && !empty($session_id)) {
7942		- $this->mxchat_save_chat_message($session_id, 'bot', $regular_response);
7943		- }
7944		-
7945		- $response_data = [
7946		- 'text' => $regular_response,
7947		- 'html' => '',
7948		- 'session_id' => $session_id
7949		- ];
7950		-
7951		- if ($testing_data !== null) {
7952		- $response_data['testing_data'] = $testing_data;
7953		- //error_log("MxChat Testing: Added testing data to X.AI fallback response");
7954		- }
7955		-
7956		- header('Content-Type: application/json');
7957		- echo json_encode($response_data);
7958		- return true;
7959		- }
7960		-
7961		- // Prepare the request body with stream: true
7962		- $body = json_encode([
7963		- 'model' => $selected_model,
7964		- 'messages' => $formatted_conversation,
7965		- 'temperature' => 0.8,
7966		- 'stream' => true
7967		- ]);
7968		-
7969		- // Setup streaming headers now that we know we're actually streaming
7970		- $this->setup_streaming_headers();
7971		-
7972		- // Use cURL for streaming support
7973		- $ch = curl_init();
7974		- curl_setopt($ch, CURLOPT_URL, 'https://api.x.ai/v1/chat/completions');
7975		- curl_setopt($ch, CURLOPT_RETURNTRANSFER, false);
7976		- curl_setopt($ch, CURLOPT_POST, true);
7977		- curl_setopt($ch, CURLOPT_POSTFIELDS, $body);
7978		- curl_setopt($ch, CURLOPT_HTTPHEADER, array(
7979		- 'Content-Type: application/json',
7980		- 'Authorization: Bearer ' . $xai_api_key
7981		- ));
7982		- curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
7983		- curl_setopt($ch, CURLOPT_TIMEOUT, 60);
7984		-
7985		- $full_response = ''; // Accumulate full response for saving
7986		- $stream_started = false;
7987		- $buffer = ''; // CRITICAL: Add persistent buffer for incomplete chunks
7988		-
7989		- // Buffer control for real-time streaming
7990		- curl_setopt($ch, CURLOPT_WRITEFUNCTION, function($ch, $data) use (&$full_response, &$stream_started, &$buffer, $testing_data) {
7991		- // Send testing data as the first event if available
7992		- if (!$stream_started && $testing_data !== null) {
7993		- echo "data: " . json_encode(['testing_data' => $testing_data]) . "\n\n";
7994		- flush();
7995		- $stream_started = true;
7996		- //error_log("MxChat Testing: Sent testing data in X.AI stream");
7997		- }
7998		-
7999		- // CRITICAL FIX: Append new data to buffer
8000		- $buffer .= $data;
8001		-
8002		- // Process complete lines only
8003		- $lines = explode("\n", $buffer);
8004		-
8005		- // CRITICAL FIX: Keep the last incomplete line in the buffer
8006		- // The last element might be incomplete, so keep it in buffer
8007		- $buffer = array_pop($lines);
8008		-
8009		- foreach ($lines as $line) {
8010		- // Skip empty lines
8011		- if (trim($line) === '') {
8012		- continue;
8013		- }
8014		-
8015		- // Only process lines that start with "data: "
8016		- if (strpos($line, 'data: ') !== 0) {
8017		- continue;
8018		- }
8019		-
8020		- $json_str = substr($line, 6); // Remove 'data: ' prefix
8021		-
8022		- if (trim($json_str) === '[DONE]') {
8023		- echo "data: [DONE]\n\n";
8024		- flush();
8025		- continue;
8026		- }
8027		-
8028		- // Try to decode JSON
8029		- $json = json_decode(trim($json_str), true);
8030		- if ($json && isset($json['choices'][0]['delta']['content'])) {
8031		- $content = $json['choices'][0]['delta']['content'];
8032		- $full_response .= $content; // Accumulate
8033		- // Send as SSE format
8034		- echo "data: " . json_encode(['content' => $content]) . "\n\n";
8035		- flush();
8036		- }
8037		- }
8038		-
8039		- return strlen($data);
8040		- });
8041		-
8042		- $response = curl_exec($ch);
8043		- $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
8044		-
8045		- if (curl_errno($ch) || $http_code !== 200) {
8046		- curl_close($ch);
8047		-
8048		- // Fallback to regular response
8049		- //error_log("MxChat: X.AI streaming failed, falling back");
8050		- $regular_response = $this->mxchat_generate_response_xai(
8051		- $selected_model,
8052		- $xai_api_key,
8053		- $conversation_history,
8054		- $relevant_content
8055		- );
8056		-
8057		- $response_data = [
8058		- 'text' => $regular_response,
8059		- 'html' => '',
8060		- 'session_id' => $session_id
8061		- ];
8062		-
8063		- if ($testing_data !== null) {
8064		- $response_data['testing_data'] = $testing_data;
8065		- //error_log("MxChat Testing: Added testing data to X.AI error fallback");
8066		- }
8067		-
8068		- header('Content-Type: application/json');
8069		- echo json_encode($response_data);
8070		- return true;
8071		- }
8072		-
8073		- curl_close($ch);
8074		-
8075		- // Save the complete response to maintain chat persistence
8076		- if (!empty($full_response) && !empty($session_id)) {
8077		- // Prepare RAG context for streaming response
8078		- $rag_context_for_storage = null;
8079		- $has_rag_data = $this->last_similarity_analysis !== null && !empty($this->last_similarity_analysis['top_matches']);
8080		- $has_action_data = isset($this->last_action_analysis) && !empty($this->last_action_analysis);
8081		-
8082		- if ($has_rag_data || $has_action_data) {
8083		- $rag_context_for_storage = [];
8084		-
8085		- if ($has_rag_data) {
8086		- $rag_context_for_storage['top_matches'] = $this->last_similarity_analysis['top_matches'];
8087		- $rag_context_for_storage['approved_urls'] = $this->current_valid_urls ?? [];
8088		- $rag_context_for_storage['similarity_threshold'] = $this->last_similarity_analysis['threshold_used'] ?? 0.35;
8089		- $rag_context_for_storage['knowledge_base_type'] = $this->last_similarity_analysis['knowledge_base_type'] ?? 'WordPress Database';
8090		- $rag_context_for_storage['total_documents_checked'] = $this->last_similarity_analysis['total_checked'] ?? 0;
8091		- }
8092		-
8093		- if ($has_action_data) {
8094		- $rag_context_for_storage['action_analysis'] = $this->last_action_analysis;
8095		- }
8096		- }
8097		- $this->mxchat_save_chat_message($session_id, 'bot', $full_response, null, $rag_context_for_storage);
8098		- }
8099		-
8100		- return true; // Indicate streaming completed successfully
8101		-
8102		- } catch (Exception $e) {
8103		- //error_log("MxChat X.AI streaming exception: " . $e->getMessage());
8104		-
8105		- // Fallback to regular response
8106		- $regular_response = $this->mxchat_generate_response_xai(
8107		- $selected_model,
8108		- $xai_api_key,
8109		- $conversation_history,
8110		- $relevant_content
8111		- );
8112		-
8113		- $response_data = [
8114		- 'text' => $regular_response,
8115		- 'html' => '',
8116		- 'session_id' => $session_id
8117		- ];
8118		-
8119		- if ($testing_data !== null) {
8120		- $response_data['testing_data'] = $testing_data;
8121		- //error_log("MxChat Testing: Added testing data to X.AI exception fallback");
8122		- }
8123		-
8124		- header('Content-Type: application/json');
8125		- echo json_encode($response_data);
8126		- return true;
8127		- }
8128		-}
8129		-private function mxchat_generate_response_deepseek_stream($selected_model, $deepseek_api_key, $conversation_history, $relevant_content, $session_id, $testing_data = null) {
8130		- try {
8131		- // Get bot ID from session or request
8132		- $bot_id = $this->get_current_bot_id($session_id);
8133		-
8134		- // Get system prompt instructions using centralized function
8135		- $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
8136		-
8137		- // Ensure conversation_history is an array
8138		- if (!is_array($conversation_history)) {
8139		- $conversation_history = array();
8140		- }
8141		-
8142		- // Format conversation history for DeepSeek
8143		- $formatted_conversation = array();
8144		-
8145		- $formatted_conversation[] = array(
8146		- 'role' => 'system',
8147		- 'content' => $system_prompt_instructions . " " . $relevant_content
8148		- );
8149		-
8150		- foreach ($conversation_history as $message) {
8151		- if (is_array($message) && isset($message['role']) && isset($message['content'])) {
8152		- $role = $message['role'];
8153		- if ($role === 'bot' || $role === 'agent') {
8154		- $role = 'assistant';
8155		- }
8156		- if (!in_array($role, ['system', 'assistant', 'user', 'function', 'tool'])) {
8157		- $role = 'user';
8158		- }
8159		- $formatted_conversation[] = array(
8160		- 'role' => $role,
8161		- 'content' => $message['content']
8162		- );
8163		- }
8164		- }
8165		-
8166		- // Check if we can actually stream
8167		- if (headers_sent() || !function_exists('curl_init')) {
8168		- // Fallback to regular response with testing data
8169		- //error_log("MxChat: DeepSeek streaming not possible, falling back to regular response");
8170		- $regular_response = $this->mxchat_generate_response_deepseek(
8171		- $selected_model,
8172		- $deepseek_api_key,
8173		- $conversation_history,
8174		- $relevant_content
8175		- );
8176		-
8177		- // Save bot response to transcript
8178		- if (!empty($regular_response) && !empty($session_id)) {
8179		- $this->mxchat_save_chat_message($session_id, 'bot', $regular_response);
8180		- }
8181		-
8182		- $response_data = [
8183		- 'text' => $regular_response,
8184		- 'html' => '',
8185		- 'session_id' => $session_id
8186		- ];
8187		-
8188		- if ($testing_data !== null) {
8189		- $response_data['testing_data'] = $testing_data;
8190		- //error_log("MxChat Testing: Added testing data to DeepSeek fallback response");
8191		- }
8192		-
8193		- header('Content-Type: application/json');
8194		- echo json_encode($response_data);
8195		- return true;
8196		- }
8197		-
8198		- // Prepare the request body with stream: true
8199		- $body = json_encode([
8200		- 'model' => $selected_model,
8201		- 'messages' => $formatted_conversation,
8202		- 'temperature' => 0.8,
8203		- 'stream' => true
8204		- ]);
8205		-
8206		- // Setup streaming headers now that we know we're actually streaming
8207		- $this->setup_streaming_headers();
8208		-
8209		- // Use cURL for streaming support
8210		- $ch = curl_init();
8211		- curl_setopt($ch, CURLOPT_URL, 'https://api.deepseek.com/v1/chat/completions');
8212		- curl_setopt($ch, CURLOPT_RETURNTRANSFER, false);
8213		- curl_setopt($ch, CURLOPT_POST, true);
8214		- curl_setopt($ch, CURLOPT_POSTFIELDS, $body);
8215		- curl_setopt($ch, CURLOPT_HTTPHEADER, array(
8216		- 'Content-Type: application/json',
8217		- 'Authorization: Bearer ' . $deepseek_api_key
8218		- ));
8219		- curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
8220		- curl_setopt($ch, CURLOPT_TIMEOUT, 60);
8221		-
8222		- $full_response = ''; // Accumulate full response for saving
8223		- $stream_started = false;
8224		- $buffer = ''; // CRITICAL: Add persistent buffer for incomplete chunks
8225		-
8226		- // Buffer control for real-time streaming
8227		- curl_setopt($ch, CURLOPT_WRITEFUNCTION, function($ch, $data) use (&$full_response, &$stream_started, &$buffer, $testing_data) {
8228		- // Send testing data as the first event if available
8229		- if (!$stream_started && $testing_data !== null) {
8230		- echo "data: " . json_encode(['testing_data' => $testing_data]) . "\n\n";
8231		- flush();
8232		- $stream_started = true;
8233		- //error_log("MxChat Testing: Sent testing data in DeepSeek stream");
8234		- }
8235		-
8236		- // CRITICAL FIX: Append new data to buffer
8237		- $buffer .= $data;
8238		-
8239		- // Process complete lines only
8240		- $lines = explode("\n", $buffer);
8241		-
8242		- // CRITICAL FIX: Keep the last incomplete line in the buffer
8243		- // The last element might be incomplete, so keep it in buffer
8244		- $buffer = array_pop($lines);
8245		-
8246		- foreach ($lines as $line) {
8247		- // Skip empty lines
8248		- if (trim($line) === '') {
8249		- continue;
8250		- }
8251		-
8252		- // Only process lines that start with "data: "
8253		- if (strpos($line, 'data: ') !== 0) {
8254		- continue;
8255		- }
8256		-
8257		- $json_str = substr($line, 6); // Remove 'data: ' prefix
8258		-
8259		- if (trim($json_str) === '[DONE]') {
8260		- echo "data: [DONE]\n\n";
8261		- flush();
8262		- continue;
8263		- }
8264		-
8265		- // Try to decode JSON
8266		- $json = json_decode(trim($json_str), true);
8267		- if ($json && isset($json['choices'][0]['delta']['content'])) {
8268		- $content = $json['choices'][0]['delta']['content'];
8269		- $full_response .= $content; // Accumulate the full response
8270		-
8271		- // Send as SSE format
8272		- echo "data: " . json_encode(['content' => $content]) . "\n\n";
8273		- flush();
8274		- }
8275		- }
8276		-
8277		- return strlen($data);
8278		- });
8279		-
8280		- $response = curl_exec($ch);
8281		- $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
8282		-
8283		- if (curl_errno($ch) || $http_code !== 200) {
8284		- $curl_error = curl_error($ch);
8285		- curl_close($ch);
8286		-
8287		- // Log the specific error for debugging
8288		- //error_log("MxChat: DeepSeek streaming failed - HTTP: $http_code, cURL: $curl_error");
8289		-
8290		- // Fallback to regular response
8291		- $regular_response = $this->mxchat_generate_response_deepseek(
8292		- $selected_model,
8293		- $deepseek_api_key,
8294		- $conversation_history,
8295		- $relevant_content
8296		- );
8297		-
8298		- // Handle error response from regular function
8299		- if (is_array($regular_response) && isset($regular_response['error'])) {
8300		- if ($testing_data !== null) {
8301		- $regular_response['testing_data'] = $testing_data;
8302		- }
8303		- header('Content-Type: application/json');
8304		- echo json_encode($regular_response);
8305		- return true;
8306		- }
8307		-
8308		- $response_data = [
8309		- 'text' => $regular_response,
8310		- 'html' => '',
8311		- 'session_id' => $session_id
8312		- ];
8313		-
8314		- if ($testing_data !== null) {
8315		- $response_data['testing_data'] = $testing_data;
8316		- //error_log("MxChat Testing: Added testing data to DeepSeek error fallback");
8317		- }
8318		-
8319		- header('Content-Type: application/json');
8320		- echo json_encode($response_data);
8321		- return true;
8322		- }
8323		-
8324		- curl_close($ch);
8325		-
8326		- // Save the complete response to maintain chat persistence
8327		- if (!empty($full_response) && !empty($session_id)) {
8328		- // Prepare RAG context for streaming response
8329		- $rag_context_for_storage = null;
8330		- $has_rag_data = $this->last_similarity_analysis !== null && !empty($this->last_similarity_analysis['top_matches']);
8331		- $has_action_data = isset($this->last_action_analysis) && !empty($this->last_action_analysis);
8332		-
8333		- if ($has_rag_data || $has_action_data) {
8334		- $rag_context_for_storage = [];
8335		-
8336		- if ($has_rag_data) {
8337		- $rag_context_for_storage['top_matches'] = $this->last_similarity_analysis['top_matches'];
8338		- $rag_context_for_storage['approved_urls'] = $this->current_valid_urls ?? [];
8339		- $rag_context_for_storage['similarity_threshold'] = $this->last_similarity_analysis['threshold_used'] ?? 0.35;
8340		- $rag_context_for_storage['knowledge_base_type'] = $this->last_similarity_analysis['knowledge_base_type'] ?? 'WordPress Database';
8341		- $rag_context_for_storage['total_documents_checked'] = $this->last_similarity_analysis['total_checked'] ?? 0;
8342		- }
8343		-
8344		- if ($has_action_data) {
8345		- $rag_context_for_storage['action_analysis'] = $this->last_action_analysis;
8346		- }
8347		- }
8348		- $this->mxchat_save_chat_message($session_id, 'bot', $full_response, null, $rag_context_for_storage);
8349		- }
8350		-
8351		- return true; // Indicate streaming completed successfully
8352		-
8353		- } catch (Exception $e) {
8354		- //error_log("MxChat DeepSeek streaming exception: " . $e->getMessage());
8355		-
8356		- // Fallback to regular response
8357		- $regular_response = $this->mxchat_generate_response_deepseek(
8358		- $selected_model,
8359		- $deepseek_api_key,
8360		- $conversation_history,
8361		- $relevant_content
8362		- );
8363		-
8364		- // Handle error response from regular function
8365		- if (is_array($regular_response) && isset($regular_response['error'])) {
8366		- if ($testing_data !== null) {
8367		- $regular_response['testing_data'] = $testing_data;
8368		- }
8369		- header('Content-Type: application/json');
8370		- echo json_encode($regular_response);
8371		- return true;
8372		- }
8373		-
8374		- $response_data = [
8375		- 'text' => $regular_response,
8376		- 'html' => '',
8377		- 'session_id' => $session_id
8378		- ];
8379		-
8380		- if ($testing_data !== null) {
8381		- $response_data['testing_data'] = $testing_data;
8382		- //error_log("MxChat Testing: Added testing data to DeepSeek exception fallback");
8383		- }
8384		-
8385		- header('Content-Type: application/json');
8386		- echo json_encode($response_data);
8387		- return true;
8388		- }
8389		-}
8390		-
8391		-
8392		-private function mxchat_generate_response_openrouter($selected_model, $openrouter_api_key, $conversation_history, $relevant_content) {
8393		- try {
8394		- if (!is_array($conversation_history)) {
8395		- $conversation_history = array();
8396		- }
8397		-
8398		- $bot_id = $this->get_current_bot_id('');
8399		- $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
8400		-
8401		- $formatted_conversation = array();
8402		-
8403		- $formatted_conversation[] = array(
8404		- 'role' => 'system',
8405		- 'content' => $system_prompt_instructions . " " . $relevant_content
8406		- );
8407		-
8408		- foreach ($conversation_history as $message) {
8409		- if (is_array($message) && isset($message['role']) && isset($message['content'])) {
8410		- $role = $message['role'];
8411		-
8412		- if ($role === 'bot' || $role === 'agent') {
8413		- $role = 'assistant';
8414		- }
8415		- if (!in_array($role, ['system', 'assistant', 'user'])) {
8416		- $role = 'user';
8417		- }
8418		-
8419		- $formatted_conversation[] = array(
8420		- 'role' => $role,
8421		- 'content' => $message['content']
8422		- );
8423		- }
8424		- }
8425		-
8426		- $body = json_encode([
8427		- 'model' => $selected_model,
8428		- 'messages' => $formatted_conversation,
8429		- 'temperature' => 1,
8430		- ]);
8431		-
8432		- $args = [
8433		- 'body' => $body,
8434		- 'headers' => [
8435		- 'Content-Type' => 'application/json',
8436		- 'Authorization' => 'Bearer ' . $openrouter_api_key,
8437		- 'HTTP-Referer' => home_url(),
8438		- 'X-Title' => get_bloginfo('name'),
8439		- ],
8440		- 'timeout' => 60,
8441		- 'redirection' => 5,
8442		- 'blocking' => true,
8443		- 'httpversion' => '1.0',
8444		- 'sslverify' => true,
8445		- ];
8446		-
8447		- $response = wp_remote_post('https://openrouter.ai/api/v1/chat/completions', $args);
8448		-
8449		- if (is_wp_error($response)) {
8450		- $error_message = $response->get_error_message();
8451		- return [
8452		- 'error' => esc_html__('Connection error when contacting OpenRouter: ', 'mxchat') . esc_html($error_message),
8453		- 'error_code' => 'openrouter_connection_error',
8454		- 'provider' => 'openrouter'
8455		- ];
8456		- }
8457		-
8458		- $status_code = wp_remote_retrieve_response_code($response);
8459		- if ($status_code !== 200) {
8460		- $response_body = wp_remote_retrieve_body($response);
8461		- $decoded_response = json_decode($response_body, true);
8462		-
8463		- $error_message = isset($decoded_response['error']['message'])
8464		- ? $decoded_response['error']['message']
8465		- : 'HTTP Error ' . $status_code;
8466		-
8467		- return [
8468		- 'error' => esc_html__('OpenRouter API error: ', 'mxchat') . esc_html($error_message),
8469		- 'error_code' => 'openrouter_api_error',
8470		- 'provider' => 'openrouter',
8471		- 'status_code' => $status_code
8472		- ];
8473		- }
8474		-
8475		- $response_body = wp_remote_retrieve_body($response);
8476		- $decoded_response = json_decode($response_body, true);
8477		-
8478		- if (isset($decoded_response['choices'][0]['message']['content'])) {
8479		- return trim($decoded_response['choices'][0]['message']['content']);
8480		- } else {
8481		- return [
8482		- 'error' => esc_html__('Unexpected response format from OpenRouter.', 'mxchat'),
8483		- 'error_code' => 'openrouter_response_format_error',
8484		- 'provider' => 'openrouter'
8485		- ];
8486		- }
8487		- } catch (Exception $e) {
8488		- return [
8489		- 'error' => esc_html__('System error when processing OpenRouter request: ', 'mxchat') . esc_html($e->getMessage()),
8490		- 'error_code' => 'openrouter_exception',
8491		- 'provider' => 'openrouter'
8492		- ];
8493		- }
8494		-}
8495		-private function mxchat_generate_response_claude($selected_model, $claude_api_key, $conversation_history, $relevant_content) {
8496		-
8497		- // Get bot ID from session or request
8498		- $bot_id = $this->get_current_bot_id($session_id);
8499		-
8500		- // Get system prompt instructions using centralized function
8501		- $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
8502		-
8503		- // Clean and validate conversation history
8504		- foreach ($conversation_history as &$message) {
8505		- // Convert bot and agent roles to assistant
8506		- if ($message['role'] === 'bot' || $message['role'] === 'agent') {
8507		- $message['role'] = 'assistant';
8508		- }
8509		-
8510		- // Remove unsupported roles - Claude only supports 'assistant' and 'user'
8511		- if (!in_array($message['role'], ['assistant', 'user'])) {
8512		- $message['role'] = 'user';
8513		- }
8514		-
8515		- // Ensure content field exists
8516		- if (!isset($message['content']) || empty($message['content'])) {
8517		- $message['content'] = '';
8518		- }
8519		-
8520		- // Remove any unsupported fields
8521		- $message = array_intersect_key($message, array_flip(['role', 'content']));
8522		- }
8523		-
8524		- // Add relevant content as the latest user message
8525		- $conversation_history[] = [
8526		- 'role' => 'user',
8527		- 'content' => $relevant_content
8528		- ];
8529		-
8530		- // Build request body
8531		- $body = json_encode([
8532		- 'model' => $selected_model,
8533		- 'max_tokens' => 1000,
8534		- 'temperature' => 0.8,
8535		- 'messages' => $conversation_history,
8536		- 'system' => $system_prompt_instructions
8537		- ]);
8538		-
8539		- // Set up API request
8540		- $args = [
8541		- 'body' => $body,
8542		- 'headers' => [
8543		- 'Content-Type' => 'application/json',
8544		- 'x-api-key' => $claude_api_key,
8545		- 'anthropic-version' => '2023-06-01'
8546		- ],
8547		- 'timeout' => 60,
8548		- 'redirection' => 5,
8549		- 'blocking' => true,
8550		- 'httpversion' => '1.0',
8551		- 'sslverify' => true,
8552		- ];
8553		-
8554		- // Make API request
8555		- $response = wp_remote_post('https://api.anthropic.com/v1/messages', $args);
8556		-
8557		- // Check for WordPress errors
8558		- if (is_wp_error($response)) {
8559		- //error_log("Claude API request error: " . $response->get_error_message());
8560		- return "Sorry, there was an error connecting to the API.";
8561		- }
8562		-
8563		- // Check HTTP response code
8564		- $http_code = wp_remote_retrieve_response_code($response);
8565		- if ($http_code !== 200) {
8566		- $error_body = wp_remote_retrieve_body($response);
8567		- //error_log("Claude API HTTP error: " . $http_code . " - " . $error_body);
8568		-
8569		- // Try to extract error message from response
8570		- $error_data = json_decode($error_body, true);
8571		- $error_message = isset($error_data['error']['message']) ?
8572		- $error_data['error']['message'] :
8573		- "HTTP error " . $http_code;
8574		-
8575		- return "Sorry, the API returned an error: " . $error_message;
8576		- }
8577		-
8578		- // Parse response
8579		- $response_body = json_decode(wp_remote_retrieve_body($response), true);
8580		-
8581		- // Check for JSON decode errors
8582		- if (json_last_error() !== JSON_ERROR_NONE) {
8583		- //error_log("Claude API JSON decode error: " . json_last_error_msg());
8584		- return "Sorry, there was an error processing the API response.";
8585		- }
8586		-
8587		- // Extract and validate response content
8588		- if (isset($response_body['content']) &&
8589		- is_array($response_body['content']) &&
8590		- !empty($response_body['content']) &&
8591		- isset($response_body['content'][0]['text'])) {
8592		- return trim($response_body['content'][0]['text']);
8593		- }
8594		-
8595		- // Log unexpected response format
8596		- //error_log("Claude API unexpected response format: " . print_r($response_body, true));
8597		- return "Sorry, I received an unexpected response format from the API.";
8598		-}
8599		-private function mxchat_generate_response_openai($selected_model, $api_key, $conversation_history, $relevant_content) {
8600		- try {
8601		- // Ensure conversation_history is an array
8602		- if (!is_array($conversation_history)) {
8603		- $conversation_history = array();
8604		- }
8605		-
8606		- // Get bot ID from session or request
8607		- $bot_id = $this->get_current_bot_id('');
8608		-
8609		- // Get system prompt instructions using centralized function
8610		- $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
8611		-
8612		- // Create a new array for the formatted conversation
8613		- $formatted_conversation = array();
8614		-
8615		- // Add system message first
8616		- $formatted_conversation[] = array(
8617		- 'role' => 'system',
8618		- 'content' => $system_prompt_instructions . " " . $relevant_content
8619		- );
8620		-
8621		- // Add the rest of the conversation history
8622		- foreach ($conversation_history as $message) {
8623		- if (is_array($message) && isset($message['role']) && isset($message['content'])) {
8624		- $role = $message['role'];
8625		-
8626		- // Convert roles to supported format
8627		- if ($role === 'bot' || $role === 'agent') {
8628		- $role = 'assistant';
8629		- }
8630		- if (!in_array($role, ['system', 'assistant', 'user', 'function', 'tool'])) {
8631		- $role = 'user';
8632		- }
8633		-
8634		- $formatted_conversation[] = array(
8635		- 'role' => $role,
8636		- 'content' => $message['content']
8637		- );
8638		- }
8639		- }
8640		-
8641		- // Check if this is a GPT-5 model (supports reasoning_effort parameter)
8642		- $is_gpt5_model = (
8643		- strpos($selected_model, 'gpt-5') === 0 ||
8644		- $selected_model === 'gpt-5.2' ||
8645		- $selected_model === 'gpt-5.1-2025-11-13' ||
8646		- $selected_model === 'gpt-5' ||
8647		- $selected_model === 'gpt-5-mini' ||
8648		- $selected_model === 'gpt-5-nano'
8649		- );
8650		-
8651		- // Build request body with optimal settings for fast responses
8652		- $request_body = [
8653		- 'model' => $selected_model,
8654		- 'messages' => $formatted_conversation,
8655		- 'temperature' => 1,
8656		- 'stream' => false
8657		- ];
8658		-
8659		- // Add reasoning_effort only for GPT-5 models that support it
8660		- // These chat models don't support reasoning_effort parameter
8661		- $no_reasoning_models = array('gpt-5.2', 'gpt-5.1-chat-latest', 'gpt-5.3-chat-latest', 'gpt-5.4-mini', 'gpt-5.4-nano');
8662		- if ($is_gpt5_model && !in_array($selected_model, $no_reasoning_models, true)) {
8663		- // GPT-5.1 uses 'low' instead of 'minimal'
8664		- if ($selected_model === 'gpt-5.1-2025-11-13') {
8665		- $request_body['reasoning_effort'] = 'low';
8666		- } elseif ($selected_model === 'gpt-5.4') {
8667		- $request_body['reasoning_effort'] = 'none';
8668		- } else {
8669		- $request_body['reasoning_effort'] = 'minimal';
8670		- }
8671		- }
8672		-
8673		- $body = json_encode($request_body);
8674		-
8675		- $args = [
8676		- 'body' => $body,
8677		- 'headers' => [
8678		- 'Content-Type' => 'application/json',
8679		- 'Authorization' => 'Bearer ' . $api_key,
8680		- ],
8681		- 'timeout' => 60,
8682		- 'redirection' => 5,
8683		- 'blocking' => true,
8684		- 'httpversion' => '1.0',
8685		- 'sslverify' => true,
8686		- ];
8687		-
8688		- $response = wp_remote_post('https://api.openai.com/v1/chat/completions', $args);
8689		-
8690		- if (is_wp_error($response)) {
8691		- $error_message = $response->get_error_message();
8692		- return [
8693		- 'error' => esc_html__('Connection error when contacting OpenAI: ', 'mxchat') . esc_html($error_message),
8694		- 'error_code' => 'openai_connection_error',
8695		- 'provider' => 'openai'
8696		- ];
8697		- }
8698		-
8699		- $status_code = wp_remote_retrieve_response_code($response);
8700		- if ($status_code !== 200) {
8701		- $response_body = wp_remote_retrieve_body($response);
8702		- $decoded_response = json_decode($response_body, true);
8703		-
8704		- $error_message = isset($decoded_response['error']['message'])
8705		- ? $decoded_response['error']['message']
8706		- : 'HTTP Error ' . $status_code;
8707		-
8708		- $error_type = isset($decoded_response['error']['type'])
8709		- ? $decoded_response['error']['type']
8710		- : 'unknown';
8711		-
8712		- // Handle specific error types
8713		- switch ($error_type) {
8714		- case 'invalid_request_error':
8715		- if (strpos($error_message, 'API key') !== false) {
8716		- return [
8717		- 'error' => esc_html__('Invalid OpenAI API key. Please check your API key configuration.', 'mxchat'),
8718		- 'error_code' => 'openai_invalid_api_key',
8719		- 'provider' => 'openai'
8720		- ];
8721		- }
8722		- break;
8723		-
8724		- case 'authentication_error':
8725		- return [
8726		- 'error' => esc_html__('Authentication failed with OpenAI. Please check your API key.', 'mxchat'),
8727		- 'error_code' => 'openai_auth_error',
8728		- 'provider' => 'openai'
8729		- ];
8730		-
8731		- case 'rate_limit_exceeded':
8732		- return [
8733		- 'error' => esc_html__('OpenAI rate limit exceeded. Please try again later.', 'mxchat'),
8734		- 'error_code' => 'openai_rate_limit',
8735		- 'provider' => 'openai'
8736		- ];
8737		-
8738		- case 'quota_exceeded':
8739		- return [
8740		- 'error' => esc_html__('OpenAI API quota exceeded. Please check your billing details.', 'mxchat'),
8741		- 'error_code' => 'openai_quota_exceeded',
8742		- 'provider' => 'openai'
8743		- ];
8744		- }
8745		-
8746		- // Generic error fallback
8747		- return [
8748		- 'error' => esc_html__('OpenAI API error: ', 'mxchat') . esc_html($error_message),
8749		- 'error_code' => 'openai_api_error',
8750		- 'provider' => 'openai',
8751		- 'status_code' => $status_code
8752		- ];
8753		- }
8754		-
8755		- $response_body = wp_remote_retrieve_body($response);
8756		- $decoded_response = json_decode($response_body, true);
8757		-
8758		- if (isset($decoded_response['choices'][0]['message']['content'])) {
8759		- return trim($decoded_response['choices'][0]['message']['content']);
8760		- } else {
8761		- return [
8762		- 'error' => esc_html__('Unexpected response format from OpenAI.', 'mxchat'),
8763		- 'error_code' => 'openai_response_format_error',
8764		- 'provider' => 'openai'
8765		- ];
8766		- }
8767		- } catch (Exception $e) {
8768		- return [
8769		- 'error' => esc_html__('System error when processing OpenAI request: ', 'mxchat') . esc_html($e->getMessage()),
8770		- 'error_code' => 'openai_exception',
8771		- 'provider' => 'openai'
8772		- ];
8773		- }
8774		-}
8775		-
8776		-private function mxchat_generate_response_xai($selected_model, $xai_api_key, $conversation_history, $relevant_content) {
8777		- try {
8778		- // Get bot ID from session or request
8779		- $bot_id = $this->get_current_bot_id($session_id);
8780		-
8781		- // Get system prompt instructions using centralized function
8782		- $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
8783		-
8784		- // Add system prompt to relevant content
8785	372	$content_with_instructions = $system_prompt_instructions . " " . $relevant_content;
8786	373
8787		- // Prepend system instructions to the conversation history
8788	374	array_unshift($conversation_history, [
8789	375	'role' => 'system',
8790	376	'content' => "Here are your instructions: " . $content_with_instructions
8791	377	]);
8792	378
8793		- // Ensure consistency: Replace 'bot' and 'agent' roles with supported values
8794	379	foreach ($conversation_history as &$message) {
8795	380	if ($message['role'] === 'bot') {
8796	381	$message['role'] = 'assistant';
8797		- } elseif ($message['role'] === 'agent') {
8798		- // Tag the message as coming from a live agent
8799		- $message['role'] = 'assistant';
8800		- if (!isset($message['metadata'])) {
8801		- $message['metadata'] = ['source' => 'live_agent'];
8802		- }
8803	382	}
	383	+ }
8804	384
8805		- // Ensure all roles are valid
8806		- if (!in_array($message['role'], ['system', 'assistant', 'user', 'function', 'tool'])) {
8807		- $message['role'] = 'user'; // Default to 'user'
8808		- }
8809		- }
	385	+ $api_url = 'https://api.openai.com/v1/chat/completions';
8810	386
8811		- // Build the request body
8812	387	$body = json_encode([
8813		- 'model' => $selected_model,
	388	+ 'model' => isset($this->options['model']) ? $this->options['model'] : 'gpt-3.5',
8814	389	'messages' => $conversation_history,
8815		- 'temperature' => 0.8,
8816		- 'stream' => false
8817	390	]);
8818	391
8819		- // Set up the API request
8820	392	$args = [
8821	393	'body' => $body,
8822	394	'headers' => [
8823	395	'Content-Type' => 'application/json',
8824		- 'Authorization' => 'Bearer ' . $xai_api_key,
	396	+ 'Authorization' => 'Bearer ' . $api_key,
8825	397	],
8826	398	'timeout' => 60,
8827	399	'redirection' => 5,
8828	400	'blocking' => true,
		@@ -8829,587 +401,28 @@
8829	401	'httpversion' => '1.0',
8830	402	'sslverify' => true,
8831	403	];
8832	404
8833		- // Make the API request
8834		- $response = wp_remote_post('https://api.x.ai/v1/chat/completions', $args);
	405	+ $response = wp_remote_post($api_url, $args);
8835	406
8836		- // Process the response
8837	407	if (is_wp_error($response)) {
8838		- $error_message = $response->get_error_message();
8839		- //error_log('X.AI API Error: ' . $error_message);
8840		- return [
8841		- 'error' => esc_html__('Connection error when contacting X.AI: ', 'mxchat') . esc_html($error_message),
8842		- 'error_code' => 'xai_connection_error',
8843		- 'provider' => 'xai'
8844		- ];
	408	+ return "Sorry, there was an error processing your request.";
8845	409	}
8846	410
8847		- $status_code = wp_remote_retrieve_response_code($response);
8848		- if ($status_code !== 200) {
8849		- $response_body = wp_remote_retrieve_body($response);
8850		- $decoded_response = json_decode($response_body, true);
	411	+ $response_body = json_decode(wp_remote_retrieve_body($response), true);
8851	412
8852		- // Log the full response for debugging
8853		- //error_log('X.AI Error Response: ' . print_r($decoded_response, true));
8854		-
8855		- // Extract error message from X.AI's specific format
8856		- $error_message = '';
8857		-
8858		- // Check for direct error string (as seen in your logs)
8859		- if (isset($decoded_response['error']) && is_string($decoded_response['error'])) {
8860		- $error_message = $decoded_response['error'];
	413	+ if (isset($response_body['choices'][0]['message']['content'])) {
	414	+ if (isset($response_body['usage'])) {
	415	+ $prompt_tokens = $response_body['usage']['prompt_tokens'];
	416	+ $total_tokens = $response_body['usage']['total_tokens'];
8861	417	}
8862		- // Check for nested error object (OpenAI style)
8863		- elseif (isset($decoded_response['error']['message'])) {
8864		- $error_message = $decoded_response['error']['message'];
8865		- }
8866		- // Check for top-level message
8867		- elseif (isset($decoded_response['message'])) {
8868		- $error_message = $decoded_response['message'];
8869		- }
8870		- // Fallback
8871		- else {
8872		- $error_message = 'HTTP Error ' . $status_code;
8873		- }
8874		-
8875		- //error_log('X.AI API HTTP Error: ' . $status_code . ' - ' . $error_message);
8876		-
8877		- // Check for API key errors using string matching
8878		- if (stripos($error_message, 'api key') !== false ||
8879		- stripos($error_message, 'incorrect api key') !== false ||
8880		- stripos($error_message, 'invalid api key') !== false) {
8881		- return [
8882		- 'error' => esc_html__('Invalid X.AI API key. Please check your API key configuration.', 'mxchat'),
8883		- 'error_code' => 'xai_invalid_api_key',
8884		- 'provider' => 'xai'
8885		- ];
8886		- }
8887		-
8888		- // Authentication errors
8889		- if ($status_code === 401 || $status_code === 403 ||
8890		- stripos($error_message, 'auth') !== false) {
8891		- return [
8892		- 'error' => esc_html__('Authentication failed with X.AI. Please check your API key.', 'mxchat'),
8893		- 'error_code' => 'xai_auth_error',
8894		- 'provider' => 'xai'
8895		- ];
8896		- }
8897		-
8898		- // Model errors
8899		- if (stripos($error_message, 'model') !== false) {
8900		- return [
8901		- 'error' => esc_html__('Invalid model specified for X.AI. Please check your model configuration.', 'mxchat'),
8902		- 'error_code' => 'xai_invalid_model',
8903		- 'provider' => 'xai'
8904		- ];
8905		- }
8906		-
8907		- // Rate limit errors
8908		- if ($status_code === 429 ||
8909		- stripos($error_message, 'rate') !== false ||
8910		- stripos($error_message, 'limit') !== false) {
8911		- return [
8912		- 'error' => esc_html__('X.AI rate limit exceeded. Please try again later.', 'mxchat'),
8913		- 'error_code' => 'xai_rate_limit',
8914		- 'provider' => 'xai'
8915		- ];
8916		- }
8917		-
8918		- // Quota errors
8919		- if (stripos($error_message, 'quota') !== false ||
8920		- stripos($error_message, 'billing') !== false) {
8921		- return [
8922		- 'error' => esc_html__('X.AI API quota exceeded. Please check your billing details.', 'mxchat'),
8923		- 'error_code' => 'xai_quota_exceeded',
8924		- 'provider' => 'xai'
8925		- ];
8926		- }
8927		-
8928		- // Server errors
8929		- if ($status_code >= 500) {
8930		- return [
8931		- 'error' => esc_html__('X.AI service is currently unavailable. Please try again later.', 'mxchat'),
8932		- 'error_code' => 'xai_service_unavailable',
8933		- 'provider' => 'xai'
8934		- ];
8935		- }
8936		-
8937		- // Generic error fallback with the actual error message
8938		- return [
8939		- 'error' => esc_html__('X.AI API error: ', 'mxchat') . esc_html($error_message),
8940		- 'error_code' => 'xai_api_error',
8941		- 'provider' => 'xai',
8942		- 'status_code' => $status_code
8943		- ];
8944		- }
8945		-
8946		- $response_body = wp_remote_retrieve_body($response);
8947		- $decoded_response = json_decode($response_body, true);
8948		-
8949		- if (isset($decoded_response['choices'][0]['message']['content'])) {
8950		- return trim($decoded_response['choices'][0]['message']['content']);
	418	+ return trim($response_body['choices'][0]['message']['content']);
8951	419	} else {
8952		- //error_log('X.AI API Response Format Error: ' . print_r($decoded_response, true));
8953		- return [
8954		- 'error' => esc_html__('Unexpected response format from X.AI.', 'mxchat'),
8955		- 'error_code' => 'xai_response_format_error',
8956		- 'provider' => 'xai'
8957		- ];
	420	+ return "Sorry, I couldn't process that request.";
8958	421	}
8959		-} catch (Exception $e) {
8960		- //error_log('X.AI Exception: ' . $e->getMessage());
8961		- return [
8962		- 'error' => esc_html__('System error when processing X.AI request: ', 'mxchat') . esc_html($e->getMessage()),
8963		- 'error_code' => 'xai_exception',
8964		- 'provider' => 'xai'
8965		- ];
8966	422	}
8967	423
8968	424
8969		-}
8970		-private function mxchat_generate_response_deepseek($selected_model, $deepseek_api_key, $conversation_history, $relevant_content) {
8971		- try {
8972		- // Ensure conversation_history is an array
8973		- if (!is_array($conversation_history)) {
8974		- $conversation_history = array();
8975		- }
8976		-
8977		- // Get bot ID from session or request
8978		- $bot_id = $this->get_current_bot_id($session_id);
8979		-
8980		- // Get system prompt instructions using centralized function
8981		- $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
8982		-
8983		- // Create a new array for the formatted conversation
8984		- $formatted_conversation = array();
8985		-
8986		- // Add system message first
8987		- $formatted_conversation[] = array(
8988		- 'role' => 'system',
8989		- 'content' => $system_prompt_instructions . " " . $relevant_content
8990		- );
8991		-
8992		- // Add the rest of the conversation history
8993		- foreach ($conversation_history as $message) {
8994		- if (is_array($message) && isset($message['role']) && isset($message['content'])) {
8995		- $role = $message['role'];
8996		-
8997		- // Convert roles to supported format
8998		- if ($role === 'bot' || $role === 'agent') {
8999		- $role = 'assistant';
9000		- }
9001		- if (!in_array($role, ['system', 'assistant', 'user', 'function', 'tool'])) {
9002		- $role = 'user';
9003		- }
9004		-
9005		- $formatted_conversation[] = array(
9006		- 'role' => $role,
9007		- 'content' => $message['content']
9008		- );
9009		- }
9010		- }
9011		-
9012		- $body = json_encode([
9013		- 'model' => $selected_model,
9014		- 'messages' => $formatted_conversation,
9015		- 'temperature' => 0.8,
9016		- 'stream' => false
9017		- ]);
9018		-
9019		- $args = [
9020		- 'body' => $body,
9021		- 'headers' => [
9022		- 'Content-Type' => 'application/json',
9023		- 'Authorization' => 'Bearer ' . $deepseek_api_key,
9024		- ],
9025		- 'timeout' => 60,
9026		- 'redirection' => 5,
9027		- 'blocking' => true,
9028		- 'httpversion' => '1.0',
9029		- 'sslverify' => true,
9030		- ];
9031		-
9032		- $response = wp_remote_post('https://api.deepseek.com/v1/chat/completions', $args);
9033		-
9034		- if (is_wp_error($response)) {
9035		- $error_message = $response->get_error_message();
9036		- //error_log('DeepSeek API Error: ' . $error_message);
9037		- return [
9038		- 'error' => esc_html__('Connection error when contacting DeepSeek: ', 'mxchat') . esc_html($error_message),
9039		- 'error_code' => 'deepseek_connection_error',
9040		- 'provider' => 'deepseek'
9041		- ];
9042		- }
9043		-
9044		- $status_code = wp_remote_retrieve_response_code($response);
9045		- if ($status_code !== 200) {
9046		- $response_body = wp_remote_retrieve_body($response);
9047		- $decoded_response = json_decode($response_body, true);
9048		-
9049		- $error_message = isset($decoded_response['error']['message'])
9050		- ? $decoded_response['error']['message']
9051		- : 'HTTP Error ' . $status_code;
9052		-
9053		- $error_type = isset($decoded_response['error']['type'])
9054		- ? $decoded_response['error']['type']
9055		- : 'unknown';
9056		-
9057		- //error_log('DeepSeek API HTTP Error: ' . $status_code . ' - ' . $error_message);
9058		-
9059		- // Handle specific error types
9060		- switch ($status_code) {
9061		- case 401:
9062		- return [
9063		- 'error' => esc_html__('Authentication failed with DeepSeek. Please check your API key.', 'mxchat'),
9064		- 'error_code' => 'deepseek_auth_error',
9065		- 'provider' => 'deepseek'
9066		- ];
9067		-
9068		- case 400:
9069		- if (strpos($error_message, 'API key') !== false) {
9070		- return [
9071		- 'error' => esc_html__('Invalid DeepSeek API key. Please check your API key configuration.', 'mxchat'),
9072		- 'error_code' => 'deepseek_invalid_api_key',
9073		- 'provider' => 'deepseek'
9074		- ];
9075		- }
9076		- break;
9077		-
9078		- case 429:
9079		- if (strpos($error_message, 'quota') !== false) {
9080		- return [
9081		- 'error' => esc_html__('DeepSeek API quota exceeded. Please check your billing details.', 'mxchat'),
9082		- 'error_code' => 'deepseek_quota_exceeded',
9083		- 'provider' => 'deepseek'
9084		- ];
9085		- } else {
9086		- return [
9087		- 'error' => esc_html__('DeepSeek rate limit exceeded. Please try again later.', 'mxchat'),
9088		- 'error_code' => 'deepseek_rate_limit',
9089		- 'provider' => 'deepseek'
9090		- ];
9091		- }
9092		-
9093		- case 500:
9094		- case 502:
9095		- case 503:
9096		- case 504:
9097		- return [
9098		- 'error' => esc_html__('DeepSeek service is currently unavailable. Please try again later.', 'mxchat'),
9099		- 'error_code' => 'deepseek_service_unavailable',
9100		- 'provider' => 'deepseek'
9101		- ];
9102		- }
9103		-
9104		- // Generic error fallback
9105		- return [
9106		- 'error' => esc_html__('DeepSeek API error: ', 'mxchat') . esc_html($error_message),
9107		- 'error_code' => 'deepseek_api_error',
9108		- 'provider' => 'deepseek',
9109		- 'status_code' => $status_code
9110		- ];
9111		- }
9112		-
9113		- $response_body = wp_remote_retrieve_body($response);
9114		- $decoded_response = json_decode($response_body, true);
9115		-
9116		- if (isset($decoded_response['choices'][0]['message']['content'])) {
9117		- return trim($decoded_response['choices'][0]['message']['content']);
9118		- } else {
9119		- //error_log('DeepSeek API Response Format Error: ' . print_r($decoded_response, true));
9120		- return [
9121		- 'error' => esc_html__('Unexpected response format from DeepSeek.', 'mxchat'),
9122		- 'error_code' => 'deepseek_response_format_error',
9123		- 'provider' => 'deepseek'
9124		- ];
9125		- }
9126		- } catch (Exception $e) {
9127		- //error_log('DeepSeek Exception: ' . $e->getMessage());
9128		- return [
9129		- 'error' => esc_html__('System error when processing DeepSeek request: ', 'mxchat') . esc_html($e->getMessage()),
9130		- 'error_code' => 'deepseek_exception',
9131		- 'provider' => 'deepseek'
9132		- ];
9133		- }
9134		-}
9135		-private function mxchat_generate_response_gemini($selected_model, $gemini_api_key, $conversation_history, $relevant_content) {
9136		- // Get bot ID from session or request
9137		- $bot_id = $this->get_current_bot_id($session_id);
9138		-
9139		- // Get system prompt instructions using centralized function
9140		- $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
9141		-
9142		- // Add system prompt to relevant content
9143		- $content_with_instructions = $system_prompt_instructions . " " . $relevant_content;
9144		-
9145		- // Format messages for Gemini API
9146		- $formatted_messages = [];
9147		-
9148		- // Add system message as the first user message with role prefix
9149		- // Note: Gemini doesn't have a dedicated system role, so we use a prefixed user message
9150		- $formatted_messages[] = [
9151		- 'role' => 'user',
9152		- 'parts' => [
9153		- ['text' => "[System Instructions] " . $content_with_instructions]
9154		- ]
9155		- ];
9156		-
9157		- // Add model response to acknowledge system instructions
9158		- $formatted_messages[] = [
9159		- 'role' => 'model',
9160		- 'parts' => [
9161		- ['text' => "I understand and will follow these instructions."]
9162		- ]
9163		- ];
9164		-
9165		- // Process the rest of the conversation history
9166		- $current_role = null;
9167		- $current_parts = [];
9168		-
9169		- foreach ($conversation_history as $message) {
9170		- // Skip the first system message as we already handled it
9171		- if ($message['role'] === 'system') {
9172		- continue;
9173		- }
9174		-
9175		- // Map roles to Gemini format
9176		- $gemini_role = '';
9177		- if ($message['role'] === 'user') {
9178		- $gemini_role = 'user';
9179		- } else if (in_array($message['role'], ['assistant', 'bot', 'agent'])) {
9180		- $gemini_role = 'model';
9181		- } else {
9182		- // Skip unsupported roles
9183		- continue;
9184		- }
9185		-
9186		- // If we have a new role, add the previous message
9187		- if ($current_role !== null && $current_role !== $gemini_role && !empty($current_parts)) {
9188		- $formatted_messages[] = [
9189		- 'role' => $current_role,
9190		- 'parts' => $current_parts
9191		- ];
9192		- $current_parts = [];
9193		- }
9194		-
9195		- // Set current role and add text to parts
9196		- $current_role = $gemini_role;
9197		- $current_parts[] = ['text' => $message['content']];
9198		- }
9199		-
9200		- // Add the last message if there's content
9201		- if ($current_role !== null && !empty($current_parts)) {
9202		- $formatted_messages[] = [
9203		- 'role' => $current_role,
9204		- 'parts' => $current_parts
9205		- ];
9206		- }
9207		-
9208		- // Build the request body
9209		- $body = json_encode([
9210		- 'contents' => $formatted_messages,
9211		- 'generationConfig' => [
9212		- 'temperature' => 0.7,
9213		- 'topP' => 0.95,
9214		- 'topK' => 40,
9215		- 'maxOutputTokens' => 8192,
9216		- ],
9217		- 'safetySettings' => [
9218		- [
9219		- 'category' => 'HARM_CATEGORY_HARASSMENT',
9220		- 'threshold' => 'BLOCK_MEDIUM_AND_ABOVE'
9221		- ],
9222		- [
9223		- 'category' => 'HARM_CATEGORY_HATE_SPEECH',
9224		- 'threshold' => 'BLOCK_MEDIUM_AND_ABOVE'
9225		- ],
9226		- [
9227		- 'category' => 'HARM_CATEGORY_SEXUALLY_EXPLICIT',
9228		- 'threshold' => 'BLOCK_MEDIUM_AND_ABOVE'
9229		- ],
9230		- [
9231		- 'category' => 'HARM_CATEGORY_DANGEROUS_CONTENT',
9232		- 'threshold' => 'BLOCK_MEDIUM_AND_ABOVE'
9233		- ]
9234		- ]
9235		- ]);
9236		-
9237		- // Prepare the API endpoint
9238		- // Use v1beta for preview models (Gemini 3, experimental), v1 for stable models
9239		- $api_version = (strpos($selected_model, 'preview') !== false || strpos($selected_model, 'exp') !== false) ? 'v1beta' : 'v1';
9240		- $api_endpoint = 'https://generativelanguage.googleapis.com/' . $api_version . '/models/' . $selected_model . ':generateContent?key=' . $gemini_api_key;
9241		-
9242		- // Set up the API request
9243		- $args = [
9244		- 'body' => $body,
9245		- 'headers' => [
9246		- 'Content-Type' => 'application/json',
9247		- ],
9248		- 'timeout' => 60,
9249		- 'redirection' => 5,
9250		- 'blocking' => true,
9251		- 'httpversion' => '1.0',
9252		- 'sslverify' => true,
9253		- ];
9254		-
9255		- // Make the API request
9256		- $response = wp_remote_post($api_endpoint, $args);
9257		-
9258		- // Process the response
9259		- if (is_wp_error($response)) {
9260		- return "Sorry, there was an error processing your request: " . $response->get_error_message();
9261		- }
9262		-
9263		- $response_body = json_decode(wp_remote_retrieve_body($response), true);
9264		-
9265		- // Handle potential errors in the response
9266		- if (isset($response_body['error'])) {
9267		- //error_log('Gemini API Error: ' . json_encode($response_body['error']));
9268		- return "Sorry, there was an error with the Gemini API: " .
9269		- (isset($response_body['error']['message']) ? $response_body['error']['message'] : 'Unknown error');
9270		- }
9271		-
9272		- // Extract the response text
9273		- if (isset($response_body['candidates'][0]['content']['parts'][0]['text'])) {
9274		- return trim($response_body['candidates'][0]['content']['parts'][0]['text']);
9275		- } else {
9276		- //error_log('Unexpected Gemini API response format: ' . json_encode($response_body));
9277		- return "Sorry, I couldn't process that request. The response format was unexpected.";
9278		- }
9279		-}
9280		-
9281		-
9282		-public function test_streaming_request() {
9283		- $options = get_option('mxchat_options', []);
9284		- $model = $options['model'] ?? 'gpt-5.1-chat-latest';
9285		-
9286		- // Detect provider from model prefix
9287		- $provider = strtolower(explode('-', $model)[0]);
9288		-
9289		- $sample_prompt = 'Hello! Can you stream this response back to me?';
9290		- $messages = [['role' => 'user', 'content' => $sample_prompt]];
9291		- $headers = [];
9292		- $body = [];
9293		- $url = '';
9294		- $api_key = '';
9295		-
9296		- switch ($provider) {
9297		- case 'gpt':
9298		- case 'o1':
9299		- $api_key = $options['api_key'] ?? '';
9300		- if (empty($api_key)) return '❌ Missing API key for OpenAI';
9301		- $url = 'https://api.openai.com/v1/chat/completions';
9302		- $headers = [
9303		- 'Content-Type: application/json',
9304		- 'Authorization: Bearer ' . $api_key
9305		- ];
9306		- $body = [
9307		- 'model' => $model,
9308		- 'messages' => $messages,
9309		- 'stream' => true
9310		- ];
9311		- break;
9312		-
9313		- case 'claude':
9314		- $api_key = $options['claude_api_key'] ?? '';
9315		- if (empty($api_key)) return '❌ Missing API key for Claude';
9316		- $url = 'https://api.anthropic.com/v1/messages';
9317		- $headers = [
9318		- 'Content-Type: application/json',
9319		- 'x-api-key: ' . $api_key,
9320		- 'anthropic-version: 2023-06-01'
9321		- ];
9322		- $body = [
9323		- 'model' => $model,
9324		- 'messages' => $messages,
9325		- 'max_tokens' => 100,
9326		- 'stream' => true
9327		- ];
9328		- break;
9329		-
9330		- case 'grok':
9331		- $api_key = $options['xai_api_key'] ?? '';
9332		- if (empty($api_key)) return '❌ Missing API key for X.AI';
9333		- $url = 'https://api.x.ai/v1/chat/completions';
9334		- $headers = [
9335		- 'Content-Type: application/json',
9336		- 'Authorization: Bearer ' . $api_key
9337		- ];
9338		- $body = [
9339		- 'model' => $model,
9340		- 'messages' => $messages,
9341		- 'stream' => true
9342		- ];
9343		- break;
9344		-
9345		- case 'deepseek':
9346		- if (empty($deepseek_api_key)) {
9347		- $error_response = [
9348		- 'error' => esc_html__('DeepSeek API key is not configured', 'mxchat'),
9349		- 'error_code' => 'missing_deepseek_api_key'
9350		- ];
9351		- if ($testing_data !== null) {
9352		- $error_response['testing_data'] = $testing_data;
9353		- }
9354		- return $error_response;
9355		- }
9356		- if ($streaming) {
9357		- return $this->mxchat_generate_response_deepseek_stream(
9358		- $selected_model,
9359		- $deepseek_api_key,
9360		- $conversation_history,
9361		- $relevant_content,
9362		- $session_id,
9363		- $testing_data // Pass testing data
9364		- );
9365		- } else {
9366		- $response = $this->mxchat_generate_response_deepseek(
9367		- $selected_model,
9368		- $deepseek_api_key,
9369		- $conversation_history,
9370		- $relevant_content
9371		- );
9372		- }
9373		- break;
9374		-
9375		- case 'gemini':
9376		- $api_key = $options['gemini_api_key'] ?? '';
9377		- if (empty($api_key)) return '❌ Missing API key for Gemini';
9378		- $url = 'https://generativelanguage.googleapis.com/v1beta/models/' . $model . ':streamGenerateContent?key=' . $api_key;
9379		- $headers = ['Content-Type: application/json'];
9380		- $body = [
9381		- 'contents' => [['role' => 'user', 'parts' => [['text' => $sample_prompt]]]],
9382		- 'generationConfig' => ['temperature' => 0.7]
9383		- ];
9384		- break;
9385		-
9386		- default:
9387		- return '❌ Unsupported provider: ' . $provider;
9388		- }
9389		-
9390		- // Do the actual streaming test
9391		- $ch = curl_init($url);
9392		- curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($body));
9393		- curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
9394		- curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
9395		- curl_setopt($ch, CURLOPT_TIMEOUT, 15);
9396		- curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
9397		-
9398		- $response = curl_exec($ch);
9399		- $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
9400		- $error = curl_error($ch);
9401		- curl_close($ch);
9402		-
9403		- if ($error) return "❌ cURL error: $error";
9404		- if ($http_code !== 200) {
9405		- $error_message = json_decode($response, true)['error']['message'] ?? 'Unknown';
9406		- return "❌ HTTP $http_code: $error_message";
9407		- }
9408		-
9409		- return true;
9410		-}
9411		-
9412	425	public function mxchat_dismiss_pre_chat_message() {
9413	426	// Get and sanitize the user identifier
9414	427	$user_id = $this->mxchat_get_user_identifier();
9415	428	$user_id = sanitize_key($user_id);
		@@ -9420,30 +433,11 @@
9420	433
9421	434	wp_send_json_success();
9422	435	}
9423	436
9424		-public function mxchat_check_pre_chat_message_status() {
9425		- // Get and sanitize the user identifier
9426		- $user_id = $this->mxchat_get_user_identifier();
9427		- $user_id = sanitize_key($user_id);
9428	437
9429		- // Check if the transient exists (i.e., if the message was dismissed)
9430		- $transient_key = 'mxchat_pre_chat_message_dismissed_' . $user_id;
9431		- $dismissed = get_transient($transient_key);
9432	438
9433		- // Log the result to see if it's being set correctly
9434		- //error_log("Check pre-chat message dismissed for $user_id: " . ($dismissed ? 'Yes' : 'No'));
9435		-
9436		- if ($dismissed) {
9437		- wp_send_json_success(['dismissed' => true]);
9438		- } else {
9439		- wp_send_json_success(['dismissed' => false]);
9440		- }
9441		-
9442		- wp_die();
9443		-}
9444		-
9445		-private function mxchat_calculate_cosine_similarity($vectorA, $vectorB) {
	439	+ private function mxchat_calculate_cosine_similarity($vectorA, $vectorB) {
9446	440	if (!is_array($vectorA) || !is_array($vectorB) || empty($vectorA) || empty($vectorB)) {
9447	441	return 0;
9448	442	}
9449	443
		@@ -9463,1341 +457,111 @@
9463	457
9464	458	return $dotProduct / ($normA * $normB);
9465	459	}
9466	460
	461	+ public function mxchat_enqueue_scripts_styles() {
	462	+ // Define version numbers for the styles and scripts
	463	+ $chat_style_version = '1.0.8'; // Replace with your actual version
	464	+ $chat_script_version = '1.0.8'; // Replace with your actual version
9467	465
9468		-public function mxchat_enqueue_scripts_styles() {
9469		- // Fetch options from the database first to check loading strategy
9470		- $this->options = get_option('mxchat_options');
9471		- $loading_strategy = isset($this->options['script_loading_strategy']) ? $this->options['script_loading_strategy'] : 'default';
9472		-
9473		- // Always enqueue CSS immediately
9474		- wp_enqueue_style(
9475		- 'mxchat-chat-css',
9476		- plugin_dir_url(__FILE__) . '../css/chat-style.css',
9477		- array(),
9478		- MXCHAT_VERSION
9479		- );
9480		-
9481		- // Handle script loading based on strategy
9482		- if ($loading_strategy === 'default' || $loading_strategy === 'defer') {
9483		- // Enqueue the script normally
	466	+ // Correct path to the script file
9484	467	wp_enqueue_script(
9485		- 'mxchat-chat-js',
9486		- plugin_dir_url(__FILE__) . '../js/chat-script.js',
9487		- array('jquery'),
9488		- MXCHAT_VERSION,
9489		- true
	468	+ 'mxchat-chat-js', // Handle for the script
	469	+ plugin_dir_url(__FILE__) . '../js/chat-script.js', // Correct path using __FILE__
	470	+ array('jquery'), // Dependencies
	471	+ $chat_script_version, // Version for cache busting
	472	+ true // Load script in footer
9490	473	);
9491	474
9492		- // Add defer attribute if strategy is 'defer'
9493		- if ($loading_strategy === 'defer') {
9494		- wp_script_add_data('mxchat-chat-js', 'strategy', 'defer');
9495		- }
9496		- } else {
9497		- // For delay or interaction-based loading, we'll use a custom loader
9498		- // Don't enqueue the main script - we'll load it dynamically
9499		- add_action('wp_footer', array($this, 'mxchat_output_delayed_script_loader'), 99);
9500		- }
	475	+ // Enqueue the CSS file similarly
	476	+ wp_enqueue_style(
	477	+ 'mxchat-chat-css', // Handle for the style
	478	+ plugin_dir_url(__FILE__) . '../css/chat-style.css', // Correct path using __FILE__
	479	+ array(), // No dependencies
	480	+ $chat_style_version // Version for cache busting
	481	+ );
9501	482
9502		- $prompts_options = get_option('mxchat_prompts_options', array());
	483	+ // Fetch options from the database
	484	+ $this->options = get_option('mxchat_options');
9503	485
9504		- // Check if AI theme is active - if so, skip inline colors in JavaScript
9505		- $theme_options = get_option('mxchat_theme_options', array());
9506		- $ai_theme_active = !empty($theme_options['active_ai_theme_css']);
9507		- $has_bot_theme_assignments = !empty($theme_options['bot_theme_assignments']);
9508		- $skip_inline_colors = $ai_theme_active || $has_bot_theme_assignments;
	486	+ // Prepare settings to pass to JavaScript
	487	+ $style_settings = array(
	488	+ 'ajax_url' => admin_url('admin-ajax.php'),
	489	+ 'nonce' => wp_create_nonce('mxchat_chat_nonce'), // Nonce for security
	490	+ 'rate_limit_message' => 'Rate limit exceeded. Please try again later.',
	491	+ 'appendWidgetToBody' => $this->options['append_to_body'] ?? 'off'
	492	+ );
9509	493
9510		- // Prepare settings for JavaScript
9511		- $style_settings = array(
9512		- 'ajax_url' => admin_url('admin-ajax.php'),
9513		- 'nonce' => wp_create_nonce('mxchat_chat_nonce'),
9514		- 'model' => isset($this->options['model']) ? $this->options['model'] : 'gpt-5.1-chat-latest',
9515		- 'enable_streaming_toggle' => isset($this->options['enable_streaming_toggle']) ? $this->options['enable_streaming_toggle'] : 'on',
9516		- 'contextual_awareness_toggle' => isset($this->options['contextual_awareness_toggle']) ? $this->options['contextual_awareness_toggle'] : 'off',
9517		- 'link_target_toggle' => $this->options['link_target_toggle'] ?? 'off',
9518		- 'rate_limit_message' => $this->options['rate_limit_message'] ?? 'Rate limit exceeded. Please try again later.',
9519		- 'complianz_toggle' => isset($this->options['complianz_toggle']) && $this->options['complianz_toggle'] === 'on',
9520		- 'user_message_bg_color' => $this->options['user_message_bg_color'] ?? '#fff',
9521		- 'user_message_font_color' => $this->options['user_message_font_color'] ?? '#212121',
9522		- 'bot_message_bg_color' => $this->options['bot_message_bg_color'] ?? '#212121',
9523		- 'bot_message_font_color' => $this->options['bot_message_font_color'] ?? '#fff',
9524		- 'top_bar_bg_color' => $this->options['top_bar_bg_color'] ?? '#212121',
9525		- 'send_button_font_color' => $this->options['send_button_font_color'] ?? '#212121',
9526		- 'close_button_color' => $this->options['close_button_color'] ?? '#fff',
9527		- 'chatbot_background_color' => $this->options['chatbot_background_color'] ?? '#212121',
9528		- 'chatbot_bg_color' => $this->options['chatbot_bg_color'] ?? '#fff',
9529		- 'icon_color' => $this->options['icon_color'] ?? '#fff',
9530		- 'chat_input_font_color' => $this->options['chat_input_font_color'] ?? '#212121',
9531		- 'chat_persistence_toggle' => $this->options['chat_persistence_toggle'] ?? 'off',
9532		- 'appendWidgetToBody' => $this->options['append_to_body'] ?? 'off',
9533		- 'live_agent_message_bg_color' => $this->options['live_agent_message_bg_color'] ?? '#ffffff',
9534		- 'live_agent_message_font_color' => $this->options['live_agent_message_font_color'] ?? '#333333',
9535		- 'chat_toolbar_toggle' => $this->options['chat_toolbar_toggle'] ?? 'off',
9536		- 'mode_indicator_bg_color' => $this->options['mode_indicator_bg_color'] ?? '#767676',
9537		- 'mode_indicator_font_color' => $this->options['mode_indicator_font_color'] ?? '#ffffff',
9538		- 'toolbar_icon_color' => $this->options['toolbar_icon_color'] ?? '#212121',
9539		- 'use_pinecone' => $prompts_options['mxchat_use_pinecone'] ?? '0',
9540		- 'email_collection_enabled' => $this->options['enable_email_block'] ?? 'off', // FIXED
9541		- 'initial_email_state' => null, // Also fixed this undefined variable
9542		- 'skip_email_check' => true,
9543		- 'pinecone_enabled' => isset($prompts_options['mxchat_use_pinecone']) && $prompts_options['mxchat_use_pinecone'] === '1',
9544		- 'skip_inline_colors' => $skip_inline_colors,
9545		- 'bot_theme_assignments' => $theme_options['bot_theme_assignments'] ?? array(),
9546		- 'print_button_enabled' => $this->options['print_button_enabled'] ?? 'on',
9547		- 'print_button_label' => esc_html__('Download Transcript', 'mxchat'),
9548		- 'print_header_title' => esc_html(get_bloginfo('name')) . ' — ' . esc_html__('Chat transcript', 'mxchat'),
9549		- );
9550		-
9551		- // For normal/defer loading, use wp_localize_script
9552		- // For delayed loading, we store settings in a transient to be output inline
9553		- if ($loading_strategy === 'default' || $loading_strategy === 'defer') {
	494	+ // Localize the script with necessary data
9554	495	wp_localize_script('mxchat-chat-js', 'mxchatChat', $style_settings);
9555		- } else {
9556		- // Store settings for the delayed loader to use
9557		- set_transient('mxchat_delayed_settings_' . get_current_user_id(), $style_settings, 60);
9558	496	}
9559		-}
9560	497
9561		-/**
9562		- * Output the delayed script loader for performance optimization
9563		- */
9564		-public function mxchat_output_delayed_script_loader() {
9565		- $this->options = get_option('mxchat_options');
9566		- $loading_strategy = isset($this->options['script_loading_strategy']) ? $this->options['script_loading_strategy'] : 'default';
9567		- $script_url = plugin_dir_url(__FILE__) . '../js/chat-script.js?ver=' . MXCHAT_VERSION;
9568	498
9569		- // Get the stored settings
9570		- $prompts_options = get_option('mxchat_prompts_options', array());
9571		- $theme_options = get_option('mxchat_theme_options', array());
9572		- $ai_theme_active = !empty($theme_options['active_ai_theme_css']);
9573		- $has_bot_theme_assignments = !empty($theme_options['bot_theme_assignments']);
9574		- $skip_inline_colors = $ai_theme_active || $has_bot_theme_assignments;
9575	499
9576		- $style_settings = array(
9577		- 'ajax_url' => admin_url('admin-ajax.php'),
9578		- 'nonce' => wp_create_nonce('mxchat_chat_nonce'),
9579		- 'model' => isset($this->options['model']) ? $this->options['model'] : 'gpt-5.1-chat-latest',
9580		- 'enable_streaming_toggle' => isset($this->options['enable_streaming_toggle']) ? $this->options['enable_streaming_toggle'] : 'on',
9581		- 'contextual_awareness_toggle' => isset($this->options['contextual_awareness_toggle']) ? $this->options['contextual_awareness_toggle'] : 'off',
9582		- 'link_target_toggle' => $this->options['link_target_toggle'] ?? 'off',
9583		- 'rate_limit_message' => $this->options['rate_limit_message'] ?? 'Rate limit exceeded. Please try again later.',
9584		- 'complianz_toggle' => isset($this->options['complianz_toggle']) && $this->options['complianz_toggle'] === 'on',
9585		- 'user_message_bg_color' => $this->options['user_message_bg_color'] ?? '#fff',
9586		- 'user_message_font_color' => $this->options['user_message_font_color'] ?? '#212121',
9587		- 'bot_message_bg_color' => $this->options['bot_message_bg_color'] ?? '#212121',
9588		- 'bot_message_font_color' => $this->options['bot_message_font_color'] ?? '#fff',
9589		- 'top_bar_bg_color' => $this->options['top_bar_bg_color'] ?? '#212121',
9590		- 'send_button_font_color' => $this->options['send_button_font_color'] ?? '#212121',
9591		- 'close_button_color' => $this->options['close_button_color'] ?? '#fff',
9592		- 'chatbot_background_color' => $this->options['chatbot_background_color'] ?? '#212121',
9593		- 'chatbot_bg_color' => $this->options['chatbot_bg_color'] ?? '#fff',
9594		- 'icon_color' => $this->options['icon_color'] ?? '#fff',
9595		- 'chat_input_font_color' => $this->options['chat_input_font_color'] ?? '#212121',
9596		- 'chat_persistence_toggle' => $this->options['chat_persistence_toggle'] ?? 'off',
9597		- 'appendWidgetToBody' => $this->options['append_to_body'] ?? 'off',
9598		- 'live_agent_message_bg_color' => $this->options['live_agent_message_bg_color'] ?? '#ffffff',
9599		- 'live_agent_message_font_color' => $this->options['live_agent_message_font_color'] ?? '#333333',
9600		- 'chat_toolbar_toggle' => $this->options['chat_toolbar_toggle'] ?? 'off',
9601		- 'mode_indicator_bg_color' => $this->options['mode_indicator_bg_color'] ?? '#767676',
9602		- 'mode_indicator_font_color' => $this->options['mode_indicator_font_color'] ?? '#ffffff',
9603		- 'toolbar_icon_color' => $this->options['toolbar_icon_color'] ?? '#212121',
9604		- 'use_pinecone' => $prompts_options['mxchat_use_pinecone'] ?? '0',
9605		- 'email_collection_enabled' => $this->options['enable_email_block'] ?? 'off',
9606		- 'initial_email_state' => null,
9607		- 'skip_email_check' => true,
9608		- 'pinecone_enabled' => isset($prompts_options['mxchat_use_pinecone']) && $prompts_options['mxchat_use_pinecone'] === '1',
9609		- 'skip_inline_colors' => $skip_inline_colors,
9610		- 'bot_theme_assignments' => $theme_options['bot_theme_assignments'] ?? array(),
9611		- 'print_button_enabled' => $this->options['print_button_enabled'] ?? 'on',
9612		- 'print_button_label' => esc_html__('Download Transcript', 'mxchat'),
9613		- 'print_header_title' => esc_html(get_bloginfo('name')) . ' — ' . esc_html__('Chat transcript', 'mxchat'),
9614		- );
	500	+ public function mxchat_reset_rate_limits() {
	501	+ global $wpdb;
9615	502
9616		- // Determine delay time based on strategy
9617		- $delay_ms = 0;
9618		- switch ($loading_strategy) {
9619		- case 'delay_1s':
9620		- $delay_ms = 1000;
9621		- break;
9622		- case 'delay_3s':
9623		- $delay_ms = 3000;
9624		- break;
9625		- case 'delay_5s':
9626		- $delay_ms = 5000;
9627		- break;
9628		- }
	503	+ // Define a cache key pattern for rate limits
	504	+ $cache_key_pattern = 'mxchat_chat_limit_%';
9629	505
9630		- ?>
9631		- <script type="text/javascript">
9632		- (function() {
9633		- var mxchatLoaded = false;
9634		- var mxchatChat = <?php echo wp_json_encode($style_settings); ?>;
9635		- window.mxchatChat = mxchatChat;
	506	+ // Retrieve all option names matching the pattern
	507	+ // phpcs:ignore WordPress.DB.DirectDatabaseQuery.NoCaching, WordPress.DB.DirectDatabaseQuery.DirectQuery
	508	+ $option_names = $wpdb->get_col("SELECT option_name FROM {$wpdb->options} WHERE option_name LIKE 'mxchat_chat_limit_%'");
9636	509
9637		- function loadMxChatScript() {
9638		- if (mxchatLoaded) return;
9639		- mxchatLoaded = true;
	510	+ // db call ok; no-cache ok
	511	+ // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery -- db call ok
	512	+ $wpdb->query("DELETE FROM {$wpdb->options} WHERE option_name LIKE 'mxchat_chat_limit_%'");
9640	513
9641		- function appendChatScript() {
9642		- var script = document.createElement('script');
9643		- script.src = <?php echo wp_json_encode($script_url); ?>;
9644		- script.type = 'text/javascript';
9645		- document.body.appendChild(script);
9646		- }
9647		-
9648		- if (typeof jQuery !== 'undefined') {
9649		- appendChatScript();
9650		- } else {
9651		- var jq = document.createElement('script');
9652		- jq.src = <?php echo wp_json_encode(includes_url('js/jquery/jquery.min.js')); ?>;
9653		- jq.onload = appendChatScript;
9654		- document.body.appendChild(jq);
9655		- }
	514	+ // Clear the relevant cache entries
	515	+ foreach ($option_names as $option_name) {
	516	+ wp_cache_delete($option_name, 'options');
9656	517	}
9657	518
9658		- <?php if ($loading_strategy === 'on_interaction'): ?>
9659		- // Load on user interaction
9660		- var events = ['scroll', 'mousemove', 'touchstart', 'keydown', 'click'];
9661		- events.forEach(function(evt) {
9662		- window.addEventListener(evt, loadMxChatScript, {once: true, passive: true});
9663		- });
9664		- // Fallback: load after 8 seconds if no interaction
9665		- setTimeout(loadMxChatScript, 8000);
9666		- <?php else: ?>
9667		- // Load after specified delay
9668		- setTimeout(loadMxChatScript, <?php echo intval($delay_ms); ?>);
9669		- <?php endif; ?>
9670		- })();
9671		- </script>
9672		- <?php
9673		-}
9674		-
9675		-/**
9676		- * Setup the cron jobs for rate limits with guard against multiple calls
9677		- */
9678		-public function setup_rate_limit_cron_jobs() {
9679		- // Add a guard to prevent multiple rapid calls
9680		- $last_setup = get_transient('mxchat_cron_setup_guard');
9681		- if ($last_setup && (time() - $last_setup) < 60) {
9682		- // Don't run again if we ran less than 60 seconds ago
9683		- return;
9684		- }
9685		-
9686		- // Set the guard
9687		- set_transient('mxchat_cron_setup_guard', time(), 300); // 5 minutes
9688		-
9689		- try {
9690		- // First, check if WordPress cron is disabled
9691		- if (defined('DISABLE_WP_CRON') && DISABLE_WP_CRON) {
9692		- //error_log('MxChat: WordPress cron is disabled (DISABLE_WP_CRON = true), using fallback system');
9693		- $this->setup_fallback_rate_limit_system();
9694		- return;
9695		- }
9696		-
9697		- // Check if cron is already scheduled - if so, don't mess with it
9698		- if (wp_next_scheduled('mxchat_reset_rate_limits')) {
9699		- //error_log('MxChat: Rate limit cron already scheduled, skipping setup');
9700		- return;
9701		- }
9702		-
9703		- // Clear any orphaned hooks (but don't loop indefinitely)
9704		- $hooks_to_clear = [
9705		- 'mxchat_reset_rate_limits',
9706		- 'mxchat_reset_hourly_rate_limits',
9707		- 'mxchat_reset_daily_rate_limits',
9708		- 'mxchat_reset_weekly_rate_limits',
9709		- 'mxchat_reset_monthly_rate_limits'
9710		- ];
9711		-
9712		- foreach ($hooks_to_clear as $hook) {
9713		- // Only clear a maximum of 3 instances to prevent infinite loops
9714		- $cleared = 0;
9715		- while (wp_next_scheduled($hook) && $cleared < 3) {
9716		- wp_clear_scheduled_hook($hook);
9717		- $cleared++;
9718		- }
9719		- }
9720		-
9721		- // Small delay after clearing
9722		- usleep(100000); // 0.1 seconds
9723		-
9724		- // Try to schedule the event
9725		- $initial_time = time() + 300; // Start in 5 minutes
9726		- $result = wp_schedule_event($initial_time, 'hourly', 'mxchat_reset_rate_limits');
9727		-
9728		- if ($result === false) {
9729		- //error_log('MxChat: Failed to schedule cron, using fallback system');
9730		- $this->setup_fallback_rate_limit_system();
9731		- } else {
9732		- //error_log('MxChat: Successfully scheduled rate limit reset cron');
9733		- }
9734		-
9735		- } catch (Exception $e) {
9736		- //error_log('MxChat: Cron setup exception: ' . $e->getMessage());
9737		- $this->setup_fallback_rate_limit_system();
9738		- }
9739		-}
9740		-
9741		-/**
9742		- * Try alternative cron scheduling methods
9743		- */
9744		-private function try_alternative_cron_scheduling($initial_time) {
9745		- try {
9746		- // Method 1: Try with current time instead of future time
9747		- $result1 = wp_schedule_event(time(), 'hourly', 'mxchat_reset_rate_limits');
9748		- if ($result1 !== false) {
9749		- //error_log('MxChat: Alternative method 1 (current time) succeeded');
9750		- return true;
9751		- }
9752		-
9753		- // Method 2: Try with a different interval
9754		- $result2 = wp_schedule_event($initial_time, 'daily', 'mxchat_reset_rate_limits');
9755		- if ($result2 !== false) {
9756		- //error_log('MxChat: Alternative method 2 (daily interval) succeeded');
9757		- return true;
9758		- }
9759		-
9760		- // Method 3: Try wp_schedule_single_event first, then recurring
9761		- $result3 = wp_schedule_single_event($initial_time, 'mxchat_reset_rate_limits');
9762		- if ($result3 !== false) {
9763		- //error_log('MxChat: Alternative method 3 (single event) succeeded');
9764		- // Schedule the next one manually in the handler
9765		- return true;
9766		- }
9767		-
9768		- return false;
9769		-
9770		- } catch (Exception $e) {
9771		- //error_log('MxChat: Alternative cron scheduling exception: ' . $e->getMessage());
9772		- return false;
9773		- }
9774		-}
9775		-
9776		-/**
9777		- * Enhanced fallback rate limit system
9778		- */
9779		-private function setup_fallback_rate_limit_system() {
9780		- // Set a flag to use database-based rate limit cleanup
9781		- update_option('mxchat_use_fallback_rate_limits', true);
9782		-
9783		- // Schedule a one-time check to happen on the next plugin load
9784		- update_option('mxchat_next_rate_limit_check', time() + 3600);
9785		-
9786		- // Also set up a more frequent fallback check (every 4 hours)
9787		- update_option('mxchat_fallback_check_interval', 4 * 3600);
9788		-
9789		- //error_log('MxChat: Fallback rate limit system activated');
9790		-}
9791		-
9792		-/**
9793		- * Enhanced fallback check method
9794		- */
9795		-public function check_fallback_rate_limits() {
9796		- $use_fallback = get_option('mxchat_use_fallback_rate_limits', false);
9797		-
9798		- if (!$use_fallback) {
9799		- return; // Regular cron is working
9800		- }
9801		-
9802		- $next_check = get_option('mxchat_next_rate_limit_check', 0);
9803		- $check_interval = get_option('mxchat_fallback_check_interval', 3600);
9804		-
9805		- if (time() >= $next_check) {
9806		- //error_log('MxChat: Running fallback rate limit cleanup');
9807		- $this->mxchat_reset_rate_limits();
9808		-
9809		- // Schedule next check
9810		- update_option('mxchat_next_rate_limit_check', time() + $check_interval);
9811		- }
9812		-}
9813		-/**
9814		- * Enhanced rate limit check that includes fallback cleanup and bot-specific rate limits
9815		- */
9816		-public function check_rate_limit() {
9817		- // Check if we need to run fallback cleanup
9818		- $use_fallback = get_option('mxchat_use_fallback_rate_limits', false);
9819		- $next_check = get_option('mxchat_next_rate_limit_check', 0);
9820		-
9821		- if ($use_fallback && time() >= $next_check) {
9822		- $this->mxchat_reset_rate_limits();
9823		- update_option('mxchat_next_rate_limit_check', time() + 3600); // Next hour
9824		- }
9825		-
9826		- // Get bot ID from current request context
9827		- $bot_id = isset($_POST['bot_id']) ? sanitize_key($_POST['bot_id']) : 'default';
9828		-
9829		- // Get bot-specific options (includes rate limits if overridden)
9830		- $bot_options = $this->get_bot_options($bot_id);
9831		- $current_options = !empty($bot_options) ? $bot_options : $this->options;
9832		-
9833		- // Use bot-specific rate limits if available, otherwise fall back to default
9834		- $rate_limits_source = isset($current_options['rate_limits']) ? $current_options['rate_limits'] : get_option('mxchat_options', [])['rate_limits'] ?? [];
9835		-
9836		- // Determine user role or if logged out
9837		- if (is_user_logged_in()) {
9838		- $user = wp_get_current_user();
9839		- $user_id = $user->ID;
9840		-
9841		- // Get the user's primary role using reset() to safely get the first element
9842		- $user_roles = $user->roles;
9843		-
9844		- // Safely get the first role regardless of array key structure
9845		- if (!empty($user_roles) && is_array($user_roles)) {
9846		- $role = reset($user_roles); // This safely gets the first element regardless of key
9847		- } else {
9848		- $role = 'subscriber'; // Default to subscriber if no role found
9849		- }
9850		- } else {
9851		- $role = 'logged_out';
9852		- // Use IP address for non-logged-in users
9853		- $user_id = $this->get_client_ip();
9854		- }
9855		-
9856		- // Check if rate limits are configured for this role
9857		- if (!isset($rate_limits_source[$role])) {
9858		- return true; // No limit set for this role
9859		- }
9860		-
9861		- $limit = $rate_limits_source[$role]['limit'];
9862		-
9863		- // If unlimited, return true immediately
9864		- if ($limit === 'unlimited') {
9865		- return true;
9866		- }
9867		-
9868		- // Get the option name for this user/role with safer naming (include bot_id for bot-specific limits)
9869		- $safe_role = preg_replace('/[^a-zA-Z0-9_]/', '_', $role);
9870		- $safe_user_id = preg_replace('/[^a-zA-Z0-9_]/', '_', $user_id);
9871		- $safe_bot_id = preg_replace('/[^a-zA-Z0-9_]/', '_', $bot_id);
9872		-
9873		- // Include bot_id in option name so each bot has separate rate limits
9874		- $option_name = 'mxchat_chat_limit_' . $safe_bot_id . '_' . $safe_role . '_' . $safe_user_id;
9875		-
9876		- // Get the counter data
9877		- $limit_data = get_option($option_name, ['count' => 0, 'timestamp' => time()]);
9878		-
9879		- // If first request or counter reset needed, set the initial timestamp
9880		- if ($limit_data['count'] === 0) {
9881		- $limit_data['timestamp'] = time();
9882		- update_option($option_name, $limit_data);
9883		- }
9884		-
9885		- // Get the timeframe
9886		- $timeframe = isset($rate_limits_source[$role]['timeframe']) ?
9887		- $rate_limits_source[$role]['timeframe'] : 'daily';
9888		-
9889		- // Check if the counter needs to be reset based on timeframe
9890		- $current_time = time();
9891		- $timestamp = $limit_data['timestamp'];
9892		- $should_reset = false;
9893		-
9894		- switch ($timeframe) {
9895		- case 'hourly':
9896		- $should_reset = ($current_time - $timestamp) >= 3600; // 1 hour
9897		- break;
9898		- case 'daily':
9899		- $should_reset = ($current_time - $timestamp) >= 86400; // 24 hours
9900		- break;
9901		- case 'weekly':
9902		- $should_reset = ($current_time - $timestamp) >= 604800; // 7 days
9903		- break;
9904		- case 'monthly':
9905		- $should_reset = ($current_time - $timestamp) >= 2592000; // 30 days
9906		- break;
9907		- }
9908		-
9909		- // Reset the counter if the timeframe has passed
9910		- if ($should_reset) {
9911		- $limit_data = ['count' => 0, 'timestamp' => $current_time];
9912		- update_option($option_name, $limit_data);
9913		- }
9914		-
9915		- // Check if user has exceeded their limit
9916		- if ($limit_data['count'] >= intval($limit)) {
9917		- // Get the custom message for this role
9918		- $message = !empty($rate_limits_source[$role]['message'])
9919		- ? $rate_limits_source[$role]['message']
9920		- : __('Rate limit exceeded. Please try again later.', 'mxchat');
9921		-
9922		- // Add timeframe information to the message if placeholders exist
9923		- $timeframe_label = '';
9924		- switch ($timeframe) {
9925		- case 'hourly':
9926		- $timeframe_label = __('hour', 'mxchat');
9927		- break;
9928		- case 'daily':
9929		- $timeframe_label = __('day', 'mxchat');
9930		- break;
9931		- case 'weekly':
9932		- $timeframe_label = __('week', 'mxchat');
9933		- break;
9934		- case 'monthly':
9935		- $timeframe_label = __('month', 'mxchat');
9936		- break;
9937		- }
9938		-
9939		- // Replace placeholders in the message
9940		- $message = str_replace(
9941		- ['{limit}', '{count}', '{remaining}', '{timeframe}'],
9942		- [intval($limit), $limit_data['count'], max(0, intval($limit) - $limit_data['count']), $timeframe_label],
9943		- $message
9944		- );
9945		-
9946		- // Process HTML links in the message
9947		- $message = $this->process_rate_limit_message_html($message);
9948		-
9949		- // Return error with the processed message
9950		- return [
9951		- 'error' => true,
9952		- 'message' => $message
9953		- ];
9954		- }
9955		-
9956		- // Increment the counter
9957		- $limit_data['count']++;
9958		- update_option($option_name, $limit_data);
9959		-
9960		- return true;
9961		-}
9962		-
9963		-/**
9964		- * Enhanced rate limit reset with better error handling
9965		- */
9966		-public function mxchat_reset_rate_limits() {
9967		- try {
9968		- global $wpdb;
9969		- $all_options = get_option('mxchat_options', []);
9970		- $current_time = time();
9971		-
9972		- // Get rate limit options with a safer query and limit
9973		- $option_names = $wpdb->get_col(
9974		- $wpdb->prepare(
9975		- "SELECT option_name FROM {$wpdb->options}
9976		- WHERE option_name LIKE %s
9977		- LIMIT 1000",
9978		- 'mxchat_chat_limit_%'
9979		- )
9980		- );
9981		-
9982		- if (empty($option_names)) {
9983		- return;
9984		- }
9985		-
9986		- $processed_count = 0;
9987		- $max_processing_time = 30; // Maximum 30 seconds
9988		- $start_time = time();
9989		-
9990		- foreach ($option_names as $option_name) {
9991		- // Check processing time limit
9992		- if ((time() - $start_time) > $max_processing_time) {
9993		- //error_log('MxChat: Rate limit reset timeout after processing ' . $processed_count . ' entries');
9994		- break;
9995		- }
9996		-
9997		- // Parse the option name more safely
9998		- if (!preg_match('/^mxchat_chat_limit_(.+)_(.+)$/', $option_name, $matches)) {
9999		- continue;
10000		- }
10001		-
10002		- $role_and_user = $matches[1] . '_' . $matches[2];
10003		- $parts = explode('_', $role_and_user);
10004		-
10005		- if (count($parts) < 2) {
10006		- continue;
10007		- }
10008		-
10009		- // Extract role (everything except the last part which is user ID)
10010		- $user_id_part = array_pop($parts);
10011		- $role = implode('_', $parts);
10012		-
10013		- // Skip if role doesn't exist in our settings
10014		- if (!isset($all_options['rate_limits'][$role])) {
10015		- // Clean up orphaned entries
10016		- delete_option($option_name);
10017		- continue;
10018		- }
10019		-
10020		- $timeframe = $all_options['rate_limits'][$role]['timeframe'] ?? 'daily';
10021		- $limit_data = get_option($option_name);
10022		-
10023		- if (!$limit_data || !is_array($limit_data) || !isset($limit_data['timestamp'])) {
10024		- // Clean up invalid entries
10025		- delete_option($option_name);
10026		- continue;
10027		- }
10028		-
10029		- $timestamp = $limit_data['timestamp'];
10030		- $should_reset = false;
10031		-
10032		- // Determine if we should reset based on the timeframe
10033		- switch ($timeframe) {
10034		- case 'hourly':
10035		- $should_reset = ($current_time - $timestamp) >= 3600;
10036		- break;
10037		- case 'daily':
10038		- $should_reset = ($current_time - $timestamp) >= 86400;
10039		- break;
10040		- case 'weekly':
10041		- $should_reset = ($current_time - $timestamp) >= 604800;
10042		- break;
10043		- case 'monthly':
10044		- $should_reset = ($current_time - $timestamp) >= 2592000;
10045		- break;
10046		- }
10047		-
10048		- // Reset the counter if the timeframe has passed
10049		- if ($should_reset) {
10050		- delete_option($option_name);
10051		- wp_cache_delete($option_name, 'options');
10052		- $processed_count++;
10053		- }
10054		- }
10055		-
10056		- // Clean up any orphaned cache entries
	519	+ // Optionally, clear a general cache if you have one
10057	520	wp_cache_delete('mxchat_all_chat_limits', 'options');
10058		-
10059		- //error_log("MxChat: Rate limit reset completed. Processed {$processed_count} entries.");
10060		-
10061		- } catch (Exception $e) {
10062		- //error_log('MxChat: Rate limit reset error: ' . $e->getMessage());
10063	521	}
10064		-}
10065	522
10066	523
10067		-/**
10068		- * Process HTML links in rate limit messages
10069		- *
10070		- * @param string $message The rate limit message
10071		- * @return string The processed message with safe HTML links
10072		- */
10073		-private function process_rate_limit_message_html($message) {
10074		- // Return original message if empty
10075		- if (empty($message)) {
10076		- return $message;
	524	+private function mxchat_fetch_woocommerce_products() {
	525	+ // Ensure WooCommerce is active
	526	+ if (!class_exists('WooCommerce')) {
	527	+ return [];
10077	528	}
10078		-
10079		- // First, convert markdown links to HTML
10080		- $message = $this->convert_markdown_links($message);
10081		-
10082		- // Then, auto-convert any remaining plain URLs to links
10083		- $message = $this->auto_link_urls($message);
10084		-
10085		- // Allow basic HTML tags for links and formatting
10086		- $allowed_tags = [
10087		- 'a' => [
10088		- 'href' => true,
10089		- 'target' => true,
10090		- 'rel' => true,
10091		- 'title' => true,
10092		- 'class' => true
10093		- ],
10094		- 'strong' => [],
10095		- 'em' => [],
10096		- 'br' => [],
10097		- 'b' => [],
10098		- 'i' => [],
10099		- 'span' => ['class' => true]
10100		- ];
10101		-
10102		- // Sanitize but allow the specified HTML tags
10103		- $processed_message = wp_kses($message, $allowed_tags);
10104		-
10105		- // If wp_kses stripped everything, return the original message as plain text
10106		- if (empty($processed_message) && !empty($message)) {
10107		- // Strip all HTML and return plain text as fallback
10108		- return wp_strip_all_tags($message);
10109		- }
10110		-
10111		- return $processed_message;
10112		-}
10113	529
10114		-/**
10115		- * Convert markdown links to HTML
10116		- *
10117		- * @param string $text The text to process
10118		- * @return string The text with markdown links converted to HTML
10119		- */
10120		-private function convert_markdown_links($text) {
10121		- // Return original text if empty
10122		- if (empty($text)) {
10123		- return $text;
10124		- }
10125		-
10126		- // Pattern to match markdown links: [text](url)
10127		- $pattern = '/\[([^\]]+)\]\(([^)]+)\)/';
10128		-
10129		- $processed_text = preg_replace_callback($pattern, function($matches) {
10130		- $link_text = $matches[1];
10131		- $url = $matches[2];
10132		-
10133		- // Clean up any trailing punctuation from the URL
10134		- $url = rtrim($url, '.,;:!?');
10135		-
10136		- // Sanitize the link text and URL
10137		- $safe_text = esc_html($link_text);
10138		- $safe_url = esc_url($url);
10139		-
10140		- // Create the HTML link
10141		- return '<a href="' . $safe_url . '" target="_blank" rel="noopener noreferrer">' . $safe_text . '</a>';
10142		- }, $text);
10143		-
10144		- // If preg_replace_callback failed, return original text
10145		- if ($processed_text === null) {
10146		- return $text;
10147		- }
10148		-
10149		- return $processed_text;
10150		-}
	530	+ $args = array(
	531	+ 'post_type' => 'product',
	532	+ 'post_status' => 'publish',
	533	+ 'posts_per_page' => -1,
	534	+ );
10151	535
10152		-/**
10153		- * Auto-convert plain URLs to clickable links
10154		- *
10155		- * @param string $text The text to process
10156		- * @return string The text with URLs converted to links
10157		- */
10158		-private function auto_link_urls($text) {
10159		- // Return original text if empty
10160		- if (empty($text)) {
10161		- return $text;
10162		- }
10163		-
10164		- // Simple pattern that avoids complex lookbehinds
10165		- // This will match URLs that are not already inside href attributes or markdown links
10166		- $pattern = '/(?<!href=["\'])(?<!\]\()https?:\/\/[^\s<>"\')\]]+/i';
10167		-
10168		- $processed_text = preg_replace_callback($pattern, function($matches) {
10169		- $url = $matches[0];
10170		- // Clean up any trailing punctuation that might have been captured
10171		- $url = rtrim($url, '.,;:!?');
10172		-
10173		- // Add target="_blank" and rel="noopener noreferrer" for security
10174		- return '<a href="' . esc_url($url) . '" target="_blank" rel="noopener noreferrer">' . esc_html($url) . '</a>';
10175		- }, $text);
10176		-
10177		- // If preg_replace_callback failed, return original text
10178		- if ($processed_text === null) {
10179		- return $text;
10180		- }
10181		-
10182		- return $processed_text;
10183		-}
	536	+ $products = get_posts($args);
	537	+ $product_data = [];
10184	538
	539	+ foreach ($products as $product) {
	540	+ $product_id = $product->ID;
	541	+ $product_obj = wc_get_product($product_id);
10185	542
10186		-// Helper function to get client IP address
10187		-private function get_client_ip() {
10188		- // Check for shared internet/ISP IP
10189		- if (!empty($_SERVER['HTTP_CLIENT_IP'])) {
10190		- return sanitize_text_field($_SERVER['HTTP_CLIENT_IP']);
	543	+ $product_data[] = array(
	544	+ 'id' => $product_id,
	545	+ 'name' => $product_obj->get_name(),
	546	+ 'description' => $product_obj->get_description(),
	547	+ 'short_description' => $product_obj->get_short_description(),
	548	+ 'url' => get_permalink($product_id),
	549	+ 'price' => $product_obj->get_regular_price(),
	550	+ 'sale_price' => $product_obj->get_sale_price(),
	551	+ 'stock_status' => $product_obj->get_stock_status(),
	552	+ 'sku' => $product_obj->get_sku(),
	553	+ 'in_stock' => $product_obj->is_in_stock(),
	554	+ 'total_sales' => $product_obj->get_total_sales(),
	555	+ );
10191	556	}
10192		-
10193		- // Check for IPs passing through proxies
10194		- if (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
10195		- // Use the first value in the comma-separated list
10196		- $forwarded_for = explode(',', sanitize_text_field($_SERVER['HTTP_X_FORWARDED_FOR']));
10197		- return trim($forwarded_for[0]);
10198		- }
10199		-
10200		- if (!empty($_SERVER['REMOTE_ADDR'])) {
10201		- return sanitize_text_field($_SERVER['REMOTE_ADDR']);
10202		- }
10203		-
10204		- // Fallback
10205		- return 'unknown';
10206		-}
10207	557
10208		-/**
10209		- * AJAX handler to get system information for testing panel
10210		- */
10211		-/**
10212		- * AJAX handler to get system information for testing panel
10213		- */
10214		-public function mxchat_get_system_info() {
10215		- // Verify nonce for security
10216		- if (!wp_verify_nonce($_POST['nonce'], 'mxchat_test_nonce')) {
10217		- wp_send_json_error(['message' => 'Invalid nonce']);
10218		- return;
10219		- }
10220		-
10221		- // Only allow admin users
10222		- if (!current_user_can('administrator')) {
10223		- wp_send_json_error(['message' => 'Unauthorized']);
10224		- return;
10225		- }
10226		-
10227		- // Get system prompt from options
10228		- $system_prompt = isset($this->options['system_prompt_instructions'])
10229		- ? $this->options['system_prompt_instructions']
10230		- : 'No system prompt configured';
10231		-
10232		- // Get selected model
10233		- $selected_model = isset($this->options['model']) ? $this->options['model'] : 'gpt-5.1-chat-latest';
10234		-
10235		- // Check if OpenRouter is being used
10236		- $is_openrouter = ($selected_model === 'openrouter');
10237		- $openrouter_model = '';
10238		-
10239		- if ($is_openrouter) {
10240		- // Get the actual OpenRouter model that's selected
10241		- $openrouter_model = isset($this->options['openrouter_selected_model'])
10242		- ? $this->options['openrouter_selected_model']
10243		- : 'No OpenRouter model selected';
10244		-
10245		- // Update selected_model display to show both
10246		- $selected_model = 'OpenRouter: ' . $openrouter_model;
10247		- }
10248		-
10249		- // Get API key status (just check if they exist, don't expose the keys)
10250		- $api_status = [];
10251		- $api_status['openai'] = !empty($this->options['api_key']);
10252		- $api_status['claude'] = !empty($this->options['claude_api_key']);
10253		- $api_status['gemini'] = !empty($this->options['gemini_api_key']);
10254		- $api_status['xai'] = !empty($this->options['xai_api_key']);
10255		- $api_status['deepseek'] = !empty($this->options['deepseek_api_key']);
10256		- $api_status['openrouter'] = !empty($this->options['openrouter_api_key']);
10257		-
10258		- wp_send_json_success([
10259		- 'system_prompt' => $system_prompt,
10260		- 'selected_model' => $selected_model,
10261		- 'is_openrouter' => $is_openrouter,
10262		- 'openrouter_model' => $openrouter_model,
10263		- 'api_status' => $api_status
10264		- ]);
	558	+ return $product_data;
10265	559	}
10266	560
10267		-/**
10268		- * AJAX handler to get similarity threshold
10269		- */
10270		-public function mxchat_get_similarity_threshold() {
10271		- // Verify nonce for security
10272		- if (!wp_verify_nonce($_POST['nonce'], 'mxchat_test_nonce')) {
10273		- wp_send_json_error(['message' => 'Invalid nonce']);
10274		- return;
10275		- }
10276		-
10277		- // Only allow admin users
10278		- if (!current_user_can('administrator')) {
10279		- wp_send_json_error(['message' => 'Unauthorized']);
10280		- return;
10281		- }
10282		-
10283		- // Get similarity threshold from main options (default 35%)
10284		- $similarity_threshold = isset($this->options['similarity_threshold'])
10285		- ? ((int) $this->options['similarity_threshold']) / 100
10286		- : 0.35;
10287		-
10288		- wp_send_json_success([
10289		- 'threshold' => $similarity_threshold,
10290		- 'threshold_percentage' => ($similarity_threshold * 100) . '%'
10291		- ]);
10292		-}
10293	561
10294		-/**
10295		- * AJAX handler to get knowledge base status
10296		- */
10297		-public function mxchat_get_kb_status() {
10298		- // Verify nonce for security
10299		- if (!wp_verify_nonce($_POST['nonce'], 'mxchat_test_nonce')) {
10300		- wp_send_json_error(['message' => 'Invalid nonce']);
10301		- return;
10302		- }
10303	562
10304		- // Only allow admin users
10305		- if (!current_user_can('administrator')) {
10306		- wp_send_json_error(['message' => 'Unauthorized']);
10307		- return;
10308		- }
10309	563
10310		- // Check OpenAI Vector Store first (takes priority)
10311		- $vectorstore_options = get_option('mxchat_openai_vectorstore_options', array());
10312		- $use_vectorstore = (isset($vectorstore_options['mxchat_use_openai_vectorstore']) && $vectorstore_options['mxchat_use_openai_vectorstore'] === '1');
10313		-
10314		- if ($use_vectorstore) {
10315		- $vectorstore_ids = $vectorstore_options['mxchat_openai_vectorstore_ids'] ?? '';
10316		- $id_count = !empty($vectorstore_ids) ? count(array_filter(array_map('trim', explode(',', $vectorstore_ids)))) : 0;
10317		-
10318		- $kb_info = [
10319		- 'type' => 'OpenAI Vector Store',
10320		- 'status' => 'Active',
10321		- 'documents' => $id_count > 0 ? $id_count . ' vector store' . ($id_count > 1 ? 's' : '') . ' configured' : 'No vector stores configured'
10322		- ];
10323		-
10324		- wp_send_json_success($kb_info);
10325		- return;
10326		- }
10327		-
10328		- // Check Pinecone vs WordPress
10329		- $addon_options = get_option('mxchat_pinecone_addon_options', array());
10330		- $use_pinecone = (isset($addon_options['mxchat_use_pinecone']) && $addon_options['mxchat_use_pinecone'] === '1');
10331		-
10332		- $kb_info = [
10333		- 'type' => $use_pinecone ? 'Pinecone' : 'WordPress Database',
10334		- 'status' => 'Active'
10335		- ];
10336		-
10337		- // Get document count
10338		- if ($use_pinecone) {
10339		- $kb_info['documents'] = 'Connected to Pinecone';
10340		- $kb_info['api_configured'] = !empty($addon_options['mxchat_pinecone_api_key']);
10341		- } else {
10342		- // Count documents in WordPress database
10343		- global $wpdb;
10344		- $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
10345		- $count = $wpdb->get_var("SELECT COUNT(*) FROM {$table_name}");
10346		- $kb_info['documents'] = $count ? $count . ' documents' : 'No documents';
10347		- }
10348		-
10349		- wp_send_json_success($kb_info);
10350		-}
10351		-
10352		-/**
10353		- * AJAX handler to start a completely fresh session (NEW - replaces old clear session)
10354		- */
10355		-public function mxchat_start_fresh_session() {
10356		- // Verify nonce for security
10357		- if (!wp_verify_nonce($_POST['nonce'], 'mxchat_test_nonce')) {
10358		- wp_send_json_error(['message' => 'Invalid nonce']);
10359		- return;
10360		- }
10361		-
10362		- // Only allow admin users
10363		- if (!current_user_can('administrator')) {
10364		- wp_send_json_error(['message' => 'Unauthorized']);
10365		- return;
10366		- }
10367		-
10368		- $old_session_id = isset($_POST['old_session_id']) ? sanitize_text_field($_POST['old_session_id']) : '';
10369		- $new_session_id = isset($_POST['new_session_id']) ? sanitize_text_field($_POST['new_session_id']) : '';
10370		-
10371		- if (empty($old_session_id)) {
10372		- wp_send_json_error(['message' => 'Old session ID required']);
10373		- return;
10374		- }
10375		-
10376		- // If no new session ID provided, generate one
10377		- if (empty($new_session_id)) {
10378		- $new_session_id = 'mxchat_chat_' . substr(md5(uniqid()), 0, 9);
10379		- }
10380		-
10381		- // Clear ALL data associated with the old session
10382		- $this->clear_complete_session_data($old_session_id);
10383		-
10384		- // Initialize the new session
10385		- $this->initialize_fresh_session($new_session_id);
10386		-
10387		- wp_send_json_success([
10388		- 'message' => 'Fresh session started successfully',
10389		- 'new_session_id' => $new_session_id,
10390		- 'old_session_id' => $old_session_id
10391		- ]);
10392		-}
10393		-
10394		-/**
10395		- * Clear ALL data associated with a session (ENHANCED)
10396		- */
10397		-private function clear_complete_session_data($session_id) {
10398		- // Clear chat history
10399		- delete_option("mxchat_history_{$session_id}");
10400		-
10401		- // Clear chat mode
10402		- delete_option("mxchat_mode_{$session_id}");
10403		-
10404		- // Clear any PDF/Word transients
10405		- $this->clear_pdf_transients($session_id);
10406		- if (method_exists($this, 'clear_word_transients')) {
10407		- $this->clear_word_transients($session_id);
10408		- }
10409		-
10410		- // Clear agent-related data
10411		- delete_option("mxchat_channel_{$session_id}");
10412		- delete_option("mxchat_agent_name_{$session_id}");
10413		- delete_option("mxchat_email_{$session_id}");
10414		-
10415		- // Clear any recommendation flow state
10416		- delete_option("mxchat_sr_flow_state_{$session_id}");
10417		-
10418		- // Clear any cached embeddings or context
10419		- delete_transient("mxchat_context_{$session_id}");
10420		- delete_transient("mxchat_last_query_{$session_id}");
10421		-
10422		- // Clear any testing data
10423		- delete_transient("mxchat_testing_data_{$session_id}");
10424		-
10425		- // Clear any rate limiting data for this session
10426		- delete_transient("mxchat_rate_limit_{$session_id}");
10427		-
10428		- // Clear any other session-specific transients
10429		- delete_transient("mxchat_waiting_for_pdf_url_{$session_id}");
10430		- delete_transient("mxchat_include_pdf_in_context_{$session_id}");
10431		- delete_transient("mxchat_include_word_in_context_{$session_id}");
10432		-
10433		- // Clear form addon state (pending forms and submitted forms)
10434		- delete_option("mxchat_pending_form_{$session_id}");
10435		- delete_option("mxchat_submitted_forms_{$session_id}");
10436		-
10437		- //error_log("MxChat: Cleared all data for session: {$session_id}");
10438		-}
10439		-
10440		-/**
10441		- * Initialize a fresh session with default data
10442		- */
10443		-private function initialize_fresh_session($session_id) {
10444		- // Set default chat mode
10445		- update_option("mxchat_mode_{$session_id}", 'ai');
10446		-
10447		- //error_log("MxChat: Initialized fresh session: {$session_id}");
10448		-}
10449		-
10450		-/**
10451		- * Helper method to clear Word document transients (if you have Word support)
10452		- */
10453		-private function clear_word_transients($session_id) {
10454		- delete_transient('mxchat_word_url_' . $session_id);
10455		- delete_transient('mxchat_word_filename_' . $session_id);
10456		- delete_transient('mxchat_word_embeddings_' . $session_id);
10457		- delete_transient('mxchat_include_word_in_context_' . $session_id);
10458		-}
10459		-
10460		-/**
10461		- * Simplified testing data capture method (CLEANED UP)
10462		- */
10463		-private function capture_testing_data($user_embedding, $message, $session_id) {
10464		- // Only capture for admin users
10465		- if (!current_user_can('administrator')) {
10466		- return null;
10467		- }
10468		-
10469		- $testing_data = [
10470		- 'query' => $message,
10471		- 'timestamp' => time(),
10472		- 'top_matches' => [],
10473		- 'action_matches' => [] // Add action matches
10474		- ];
10475		-
10476		- // Get similarity threshold
10477		- $similarity_threshold = isset($this->options['similarity_threshold'])
10478		- ? ((int) $this->options['similarity_threshold']) / 100
10479		- : 0.35;
10480		-
10481		- $testing_data['similarity_threshold'] = $similarity_threshold;
10482		-
10483		- // Use the real similarity analysis if available
10484		- if ($this->last_similarity_analysis !== null) {
10485		- $testing_data['knowledge_base_type'] = $this->last_similarity_analysis['knowledge_base_type'];
10486		- $testing_data['top_matches'] = $this->last_similarity_analysis['top_matches'];
10487		- $testing_data['total_documents_checked'] = $this->last_similarity_analysis['total_checked'] ?? 0;
10488		- } else {
10489		- // Fallback: determine knowledge base type
10490		- $addon_options = get_option('mxchat_pinecone_addon_options', array());
10491		- $use_pinecone = (isset($addon_options['mxchat_use_pinecone']) && $addon_options['mxchat_use_pinecone'] === '1');
10492		-
10493		- $testing_data['knowledge_base_type'] = $use_pinecone ? 'Pinecone' : 'WordPress Database';
10494		- }
10495		-
10496		- // Include action analysis if available
10497		- if (isset($this->last_action_analysis) && !empty($this->last_action_analysis)) {
10498		- $testing_data['action_matches'] = $this->last_action_analysis;
10499		-
10500		- // Clear it after capturing to avoid stale data
10501		- $this->last_action_analysis = null;
10502		- }
10503		-
10504		- return $testing_data;
10505		-}
10506		-
10507		-
10508		-/**
10509		- * Track URL clicks from chatbot responses
10510		- */
10511		-public function mxchat_track_url_click() {
10512		- // Verify nonce for security
10513		- if (!isset($_POST['nonce']) || !wp_verify_nonce($_POST['nonce'], 'mxchat_chat_nonce')) {
10514		- wp_send_json_error(['message' => 'Invalid nonce']);
10515		- wp_die();
10516		- }
10517		-
10518		- $session_id = isset($_POST['session_id']) ? sanitize_text_field($_POST['session_id']) : '';
10519		- $clicked_url = isset($_POST['url']) ? esc_url_raw($_POST['url']) : '';
10520		- $message_context = isset($_POST['message_context']) ? sanitize_textarea_field($_POST['message_context']) : '';
10521		-
10522		- if (empty($session_id) || empty($clicked_url)) {
10523		- wp_send_json_error(['message' => 'Missing required data']);
10524		- wp_die();
10525		- }
10526		-
10527		- global $wpdb;
10528		- $table_name = $wpdb->prefix . 'mxchat_url_clicks';
10529		-
10530		- // Insert click tracking record
10531		- $wpdb->insert(
10532		- $table_name,
10533		- [
10534		- 'session_id' => $session_id,
10535		- 'clicked_url' => $clicked_url,
10536		- 'message_context' => $message_context,
10537		- 'click_timestamp' => current_time('mysql', 1),
10538		- 'user_ip' => $_SERVER['REMOTE_ADDR'],
10539		- 'user_agent' => $_SERVER['HTTP_USER_AGENT']
10540		- ]
10541		- );
10542		-
10543		- wp_send_json_success(['message' => 'Click tracked']);
10544		- wp_die();
10545		-}
10546		-
10547		-/**
10548		- * Get URL click analytics for a session
10549		- */
10550		-public function mxchat_get_url_clicks($session_id) {
10551		- global $wpdb;
10552		- $table_name = $wpdb->prefix . 'mxchat_url_clicks';
10553		-
10554		- $clicks = $wpdb->get_results($wpdb->prepare(
10555		- "SELECT * FROM $table_name WHERE session_id = %s ORDER BY click_timestamp ASC",
10556		- $session_id
10557		- ));
10558		-
10559		- return $clicks;
10560		-}
10561		-/**
10562		- * Track the originating page where chat was started
10563		- */
10564		-public function mxchat_track_originating_page() {
10565		- // Verify nonce
10566		- if (!isset($_POST['nonce']) || !wp_verify_nonce($_POST['nonce'], 'mxchat_chat_nonce')) {
10567		- wp_send_json_error(['message' => 'Invalid nonce']);
10568		- wp_die();
10569		- }
10570		-
10571		- $session_id = isset($_POST['session_id']) ? sanitize_text_field($_POST['session_id']) : '';
10572		- $page_url = isset($_POST['page_url']) ? esc_url_raw($_POST['page_url']) : '';
10573		- $page_title = isset($_POST['page_title']) ? sanitize_text_field($_POST['page_title']) : '';
10574		-
10575		- if (empty($session_id)) {
10576		- wp_send_json_error(['message' => 'Missing session ID']);
10577		- wp_die();
10578		- }
10579		-
10580		- global $wpdb;
10581		- $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
10582		-
10583		- // Check if we've already tracked for this session
10584		- $existing = $wpdb->get_var($wpdb->prepare(
10585		- "SELECT COUNT(*) FROM $table_name
10586		- WHERE session_id = %s
10587		- AND originating_page_url IS NOT NULL",
10588		- $session_id
10589		- ));
10590		-
10591		- if ($existing > 0) {
10592		- wp_send_json_success(['message' => 'Already tracked']);
10593		- wp_die();
10594		- }
10595		-
10596		- // Update the first message in this session with originating page info
10597		- $wpdb->query($wpdb->prepare(
10598		- "UPDATE $table_name
10599		- SET originating_page_url = %s,
10600		- originating_page_title = %s
10601		- WHERE session_id = %s
10602		- ORDER BY timestamp ASC
10603		- LIMIT 1",
10604		- $page_url,
10605		- $page_title,
10606		- $session_id
10607		- ));
10608		-
10609		- wp_send_json_success(['message' => 'Originating page tracked']);
10610		- wp_die();
10611		-}
10612		-
10613		-/**
10614		- * Validate and clean URLs from AI response
10615		- * Removes any URLs that aren't in the knowledge base
10616		- *
10617		- * @param string $response_text The AI-generated response
10618		- * @param array $valid_urls Array of URLs from the knowledge base
10619		- * @return string Cleaned response with invalid URLs removed/flagged
10620		- */
10621		-private function validate_and_clean_urls($response_text, $valid_urls) {
10622		- // DEBUG: Log what we're working with
10623		- //error_log("=== MxChat URL Validation Debug ===");
10624		- //error_log("Valid URLs count: " . count($valid_urls));
10625		- //error_log("Valid URLs: " . print_r($valid_urls, true));
10626		- //error_log("Response text length: " . strlen($response_text));
10627		- //error_log("Response text preview: " . substr($response_text, 0, 500));
10628		-
10629		- // If no valid URLs provided or empty response, return as-is
10630		- if (empty($valid_urls) || empty($response_text)) {
10631		- //error_log("Validation skipped - empty valid_urls or response");
10632		- return $response_text;
10633		- }
10634		-
10635		- // Extract all URLs from the AI response
10636		- // This regex matches http:// and https:// URLs
10637		- preg_match_all(
10638		- '#\bhttps?://[^\s<>"\')\]]+#i',
10639		- $response_text,
10640		- $matches
10641		- );
10642		-
10643		- // If no URLs found in response, return as-is
10644		- if (empty($matches[0])) {
10645		- //error_log("No URLs found in response");
10646		- return $response_text;
10647		- }
10648		-
10649		- $found_urls = $matches[0];
10650		- $cleaned_response = $response_text;
10651		- $removed_count = 0;
10652		-
10653		- // Normalize valid URLs for comparison (remove trailing slashes, fragments, etc.)
10654		- $normalized_valid_urls = array_map(function($url) {
10655		- // Remove trailing slash
10656		- $url = rtrim($url, '/');
10657		- // Remove URL fragments (#section)
10658		- $url = preg_replace('/#.*$/', '', $url);
10659		- // Remove trailing punctuation that might have been captured
10660		- $url = rtrim($url, '.,;:!?');
10661		- return $url;
10662		- }, $valid_urls);
10663		-
10664		- //error_log("Normalized valid URLs: " . print_r($normalized_valid_urls, true));
10665		-
10666		- foreach ($found_urls as $found_url) {
10667		- // Clean up the found URL (remove trailing punctuation that might have been captured)
10668		- $clean_found_url = rtrim($found_url, '.,;:!?)');
10669		-
10670		- // DEBUG: Log each URL being checked
10671		- //error_log("Checking found URL: " . $found_url);
10672		-
10673		- // Normalize for comparison
10674		- $normalized_found = rtrim($clean_found_url, '/');
10675		- $normalized_found = preg_replace('/#.*$/', '', $normalized_found);
10676		-
10677		- //error_log("Normalized found URL: " . $normalized_found);
10678		-
10679		- // Check if this URL exists in our valid URLs list
10680		- $is_valid = false;
10681		-
10682		- //error_log("Starting validation checks for: " . $normalized_found);
10683		-
10684		- // First, try exact match
10685		- if (in_array($normalized_found, $normalized_valid_urls)) {
10686		- $is_valid = true;
10687		- //error_log("EXACT MATCH FOUND");
10688		- } else {
10689		- //error_log("No exact match, checking variations...");
10690		- // If no exact match, check if it's a variation (with query params, etc.)
10691		- foreach ($normalized_valid_urls as $valid_url) {
10692		- //error_log(" Comparing against valid URL: " . $valid_url);
10693		-
10694		- // Check if the found URL starts with a valid URL (handles query params)
10695		- if (strpos($normalized_found, $valid_url) === 0) {
10696		- // Check what comes after the valid URL
10697		- $remainder = substr($normalized_found, strlen($valid_url));
10698		-
10699		- // Only valid if:
10700		- // 1. Exact match (remainder is empty)
10701		- // 2. Query params (starts with ?)
10702		- // 3. Fragment (starts with #)
10703		- if (empty($remainder) || $remainder[0] === '?' || $remainder[0] === '#') {
10704		- $is_valid = true;
10705		- //error_log(" MATCH: Found URL is valid variation of base URL");
10706		- break;
10707		- } else {
10708		- //error_log(" NOT A MATCH: Found URL extends path beyond valid URL (remainder: " . $remainder . ")");
10709		- }
10710		- }
10711		- // Also check the reverse (in case valid URL has query params)
10712		- if (strpos($valid_url, $normalized_found) === 0) {
10713		- $is_valid = true;
10714		- //error_log(" MATCH: Valid URL starts with found URL");
10715		- break;
10716		- }
10717		- }
10718		-
10719		- if (!$is_valid) {
10720		- //error_log("NO MATCH FOUND - URL should be removed");
10721		- }
10722		- }
10723		-
10724		- // If URL is not valid, remove it from the response
10725		- if (!$is_valid) {
10726		- // Log the removal for debugging
10727		- //error_log("MxChat: Removed hallucinated URL: " . $found_url);
10728		- //error_log("MxChat: Valid URLs were: " . implode(', ', array_slice($normalized_valid_urls, 0, 5)));
10729		-
10730		- $removed_count++;
10731		-
10732		- // Check if URL is part of a markdown link: [text](url)
10733		- $markdown_pattern = '/\[([^\]]+)\]\(' . preg_quote($found_url, '/') . '\)/';
10734		- if (preg_match($markdown_pattern, $cleaned_response)) {
10735		- //error_log("Found markdown link, removing but keeping text");
10736		- // Remove the markdown link but keep the text
10737		- $cleaned_response = preg_replace($markdown_pattern, '$1', $cleaned_response);
10738		- }
10739		- // Check if URL is part of an HTML link: <a href="url">text</a>
10740		- else if (preg_match('/<a[^>]*href=["\']' . preg_quote($found_url, '/') . '["\'][^>]*>(.*?)<\/a>/i', $cleaned_response, $link_match)) {
10741		- //error_log("Found HTML link, removing but keeping text");
10742		- // Remove the HTML link but keep the text
10743		- $link_text = $link_match[1];
10744		- $cleaned_response = preg_replace(
10745		- '/<a[^>]*href=["\']' . preg_quote($found_url, '/') . '["\'][^>]*>.*?<\/a>/i',
10746		- $link_text,
10747		- $cleaned_response
10748		- );
10749		- }
10750		- // Otherwise just remove the bare URL
10751		- else {
10752		- //error_log("Removing bare URL");
10753		- $cleaned_response = str_replace($found_url, '', $cleaned_response);
10754		- }
10755		- }
10756		- }
10757		-
10758		- // Log summary if any URLs were removed
10759		- if ($removed_count > 0) {
10760		- //error_log("MxChat: URL Validation Summary - Removed {$removed_count} hallucinated URL(s)");
10761		- } else {
10762		- //error_log("MxChat: URL Validation Summary - No URLs removed, all were valid");
10763		- }
10764		-
10765		- // Clean up any double spaces or awkward punctuation left behind
10766		- // IMPORTANT: Only collapse horizontal whitespace (spaces/tabs), preserve newlines for markdown formatting
10767		- $cleaned_response = preg_replace('/[^\S\n]+/', ' ', $cleaned_response); // Collapse spaces/tabs but NOT newlines
10768		- $cleaned_response = preg_replace('/[^\S\n]+([.,;:!?])/', '$1', $cleaned_response); // Same for punctuation cleanup
10769		-
10770		- //error_log("Final cleaned response: " . $cleaned_response);
10771		-
10772		- return trim($cleaned_response);
10773		-}
10774		-
10775		-/**
10776		- * AJAX handler to get current chat mode for a session
10777		- */
10778		-public function mxchat_get_current_chat_mode() {
10779		- // Verify nonce for security
10780		- if (!isset($_POST['nonce']) || !wp_verify_nonce($_POST['nonce'], 'mxchat_chat_nonce')) {
10781		- wp_send_json_error(['message' => 'Invalid nonce']);
10782		- wp_die();
10783		- }
10784		-
10785		- $session_id = isset($_POST['session_id']) ? sanitize_text_field($_POST['session_id']) : '';
10786		-
10787		- if (empty($session_id)) {
10788		- wp_send_json_error(['message' => 'Session ID missing']);
10789		- wp_die();
10790		- }
10791		-
10792		- // Get the current chat mode for this session
10793		- $chat_mode = get_option("mxchat_mode_{$session_id}", 'ai');
10794		-
10795		- wp_send_json_success([
10796		- 'chat_mode' => $chat_mode
10797		- ]);
10798		- wp_die();
10799		-}
10800	564
10801	565
10802	566
10803	567	}