← All changes | includes/class-mxchat-integrator.php +604 -4543 3.2.6 → 2.4.4 View file →

		@@ -10,40 +10,10 @@
10	10	private $fallbackResponse;
11	11	private $productCardHtml;
12	12	private $word_handler;
13	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 $streaming_headers_sent = false; // Track if streaming headers have been sent
18	14
19		-/**
20		- * Setup streaming headers - call this right before actually streaming
21		- * This delays header setup to allow actions/forms to return JSON responses
22		- */
23		-private function setup_streaming_headers() {
24		- if ($this->streaming_headers_sent || headers_sent()) {
25		- return false;
26		- }
27	15
28		- // Disable output buffering
29		- while (ob_get_level()) {
30		- ob_end_flush();
31		- }
32		-
33		- // Set headers for SSE
34		- header('Content-Type: text/event-stream');
35		- header('Cache-Control: no-cache');
36		- header('Connection: keep-alive');
37		- header('X-Accel-Buffering: no');
38		-
39		- ob_implicit_flush(true);
40		- flush();
41		-
42		- $this->streaming_headers_sent = true;
43		- return true;
44		-}
45		-
46	16	/**
47	17	* Class constructor
48	18	*/
49	19	public function __construct() {
		@@ -111,28 +81,13 @@
111	81	// Add chat mode checking actions
112	82	add_action('wp_ajax_mxchat_get_current_chat_mode', array($this, 'mxchat_get_current_chat_mode'));
113	83	add_action('wp_ajax_nopriv_mxchat_get_current_chat_mode', array($this, 'mxchat_get_current_chat_mode'));
114	84
115		- // Nonce refresh for page-cache compatibility (WP Rocket, LiteSpeed, etc.)
116		- add_action('wp_ajax_mxchat_refresh_nonce', array($this, 'mxchat_refresh_nonce'));
117		- add_action('wp_ajax_nopriv_mxchat_refresh_nonce', array($this, 'mxchat_refresh_nonce'));
118		-
119		- // Auto-email transcript action
120		- add_action('mxchat_send_delayed_transcript', array($this, 'mxchat_send_delayed_transcript'), 10, 1);
121		-
122	85	add_filter('mxchat_check_actions_only', array($this, 'check_actions_for_addons'), 10, 4);
123	86
124	87
125	88	}
126	89
127		-/**
128		- * Return a fresh nonce so cached pages can replace the stale one.
129		- */
130		-public function mxchat_refresh_nonce() {
131		- nocache_headers();
132		- wp_send_json_success(array('nonce' => wp_create_nonce('mxchat_chat_nonce')));
133		-}
134		-
135	90	// In your core plugin's check_actions_for_addons method:
136	91	public function check_actions_for_addons($default, $message, $user_id, $session_id) {
137	92	//error_log('MxChat Core: check_actions_for_addons called with message: ' . $message);
138	93
		@@ -155,22 +110,8 @@
155	110	wp_die();
156	111	}
157	112
158	113	$session_id = sanitize_text_field($_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	114	$history = get_option("mxchat_history_{$session_id}", []); // Retrieve stored history
174	115	$chat_mode = get_option("mxchat_mode_{$session_id}", 'ai'); // Get current chat mode
175	116
176	117	if (empty($history)) {
		@@ -187,25 +128,11 @@
187	128	'chat_mode' => $chat_mode
188	129	]);
189	130	wp_die();
190	131	}
191		-private function mxchat_fetch_conversation_history_for_ai($session_id, $session_start_timestamp = 0) {
	132	+
	133	+private function mxchat_fetch_conversation_history_for_ai($session_id) {
192	134	$history = get_option("mxchat_history_{$session_id}", []);
193		-
194		- // Check persistence setting - when OFF, only include messages from current page load
195		- $options = get_option('mxchat_options', []);
196		- $persistence_enabled = isset($options['chat_persistence_toggle']) && $options['chat_persistence_toggle'] === 'on';
197		-
198		- // Filter history when persistence is OFF to match what the user sees
199		- if (!$persistence_enabled && $session_start_timestamp > 0) {
200		- $history = array_filter($history, function($entry) use ($session_start_timestamp) {
201		- // Include messages from this page load onwards
202		- return isset($entry['timestamp']) && $entry['timestamp'] >= $session_start_timestamp;
203		- });
204		- // Re-index array after filtering
205		- $history = array_values($history);
206		- }
207		-
208	135	$formatted_history = [];
209	136
210	137	// Adjusted for code-heavy conversations
211	138	$max_tokens = 120000; // Context window size
		@@ -303,15 +230,8 @@
303	230	'callback' => [$this, 'handle_slack_messages'],
304	231	'permission_callback' => [$this, 'verify_slack_request'],
305	232	]);
306	233
307		- // Telegram webhook endpoint
308		- register_rest_route('mxchat/v1', '/telegram-webhook', [
309		- 'methods' => 'POST',
310		- 'callback' => [$this, 'handle_telegram_webhook'],
311		- 'permission_callback' => [$this, 'verify_telegram_request'],
312		- ]);
313		-
314	234	//error_log(esc_html__('MxChat REST routes registered', 'mxchat'));
315	235	}
316	236
317	237	/**
		@@ -351,11 +271,10 @@
351	271	//error_log(esc_html__('Slack request timestamp too old', 'mxchat'));
352	272	return false;
353	273	}
354	274
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();
	275	+ // Get raw request body
	276	+ $request_body = file_get_contents('php://input');
358	277
359	278	// Create the signature base string
360	279	$sig_basestring = "v0:{$timestamp}:{$request_body}";
361	280
		@@ -364,43 +283,8 @@
364	283
365	284	// Compare signatures
366	285	return hash_equals($my_signature, $slack_signature);
367	286	}
368		-
369		-/**
370		- * Verify request is coming from Telegram.
371		- *
372		- * @param WP_REST_Request $request
373		- * @return bool True if valid, false otherwise.
374		- */
375		-public function verify_telegram_request($request) {
376		- $secret_token = $this->options['telegram_webhook_secret'] ?? '';
377		-
378		- //error_log('[MxChat Telegram DEBUG] verify_telegram_request called');
379		- //error_log('[MxChat Telegram DEBUG] Stored secret: ' . (empty($secret_token) ? 'EMPTY' : substr($secret_token, 0, 10) . '...'));
380		-
381		- if (empty($secret_token)) {
382		- // If no secret is configured, allow the request (for initial setup)
383		- //error_log('[MxChat Telegram DEBUG] No secret configured, allowing request');
384		- return true;
385		- }
386		-
387		- // Telegram sends the secret token in the X-Telegram-Bot-Api-Secret-Token header
388		- $request_token = $request->get_header('X-Telegram-Bot-Api-Secret-Token');
389		-
390		- //error_log('[MxChat Telegram DEBUG] Request token: ' . (empty($request_token) ? 'EMPTY' : substr($request_token, 0, 10) . '...'));
391		-
392		- if (empty($request_token)) {
393		- //error_log('[MxChat Telegram DEBUG] Request rejected: No token in header');
394		- return false;
395		- }
396		-
397		- // Timing-safe comparison
398		- $result = hash_equals($secret_token, $request_token);
399		- //error_log('[MxChat Telegram DEBUG] Token comparison result: ' . ($result ? 'MATCH' : 'MISMATCH'));
400		- return $result;
401		-}
402		-
403	287	public function mxchat_stream_events(WP_REST_Request $request) {
404	288	header('Content-Type: text/event-stream');
405	289	header('Cache-Control: no-cache');
406	290	header('Connection: keep-alive');
		@@ -434,9 +318,9 @@
434	318
435	319
436	320
437	321
438		-private function mxchat_save_chat_message($session_id, $role, $message, $originating_page = null, $rag_context = null) {
	322	+private function mxchat_save_chat_message($session_id, $role, $message, $originating_page = null) {
439	323	global $wpdb;
440	324	$table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
441	325	//error_log("[DEBUG] mxchat_save_chat_message -> START for session_id: {$session_id}, role: {$role}");
442	326
		@@ -454,20 +338,8 @@
454	338	//error_log("[DEBUG] This is a NEW session - first message");
455	339	}
456	340	}
457	341
458		- // SECURITY FIX: Set session ownership for new sessions
459		- if ($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	342	// 1) Extract agent name if present
471	343	$agent_name = '';
472	344	if (preg_match('/^Agent: (.*?) - /', $message, $matches)) {
473	345	$agent_name = $matches[1];
		@@ -610,17 +482,9 @@
610	482	$insert_data['originating_page_title'] = $stored_originating['title'] ?? '';
611	483	}
612	484	}
613	485	}
614		-
615		- // Add RAG context if provided (for bot messages)
616		- if ($rag_context !== null && $role === 'bot') {
617		- $rag_context_column_exists = $wpdb->get_var("SHOW COLUMNS FROM $table_name LIKE 'rag_context'");
618		- if ($rag_context_column_exists) {
619		- $insert_data['rag_context'] = is_array($rag_context) ? wp_json_encode($rag_context) : $rag_context;
620		- }
621		- }
622		-
	486	+
623	487	$wpdb->insert($table_name, $insert_data);
624	488	//error_log("[DEBUG] mxchat_save_chat_message -> Inserted message into DB. row_id: {$wpdb->insert_id}, data: " . print_r($insert_data, true));
625	489
626	490	// 9) Send notification email if this is the first user message in a new session
		@@ -631,17 +495,11 @@
631	495	'ip' => $_SERVER['REMOTE_ADDR']
632	496	));
633	497	}
634	498
635		- // 10) Schedule delayed transcript email if enabled and message is from user
636		- if ($wpdb->insert_id && $role === 'user') {
637		- $this->schedule_delayed_transcript_email($session_id);
638		- }
639		-
640	499	//error_log("[DEBUG] mxchat_save_chat_message -> END for session_id: {$session_id}");
641	500	return $message_id;
642	501	}
643		-
644	502	private function send_new_chat_notification($session_id, $user_info = array()) {
645	503	$options = get_option('mxchat_transcripts_options');
646	504
647	505	// Check if notifications are enabled
		@@ -684,200 +542,12 @@
684	542	// Send email
685	543	return wp_mail($to, $subject, $message);
686	544	}
687	545
688		-/**
689		- * Schedule delayed transcript email for a session
690		- * Reschedules if a new user message is received
691		- */
692		-private function schedule_delayed_transcript_email($session_id) {
693		- $options = get_option('mxchat_transcripts_options');
694		-
695		- // Check if auto-email is enabled
696		- if (empty($options['mxchat_auto_email_transcript_enabled'])) {
697		- return;
698		- }
699		-
700		- // Get notification email
701		- $email = !empty($options['mxchat_notification_email']) ?
702		- $options['mxchat_notification_email'] :
703		- get_option('admin_email');
704		-
705		- if (!is_email($email)) {
706		- return;
707		- }
708		-
709		- // Get delay in minutes (default 30)
710		- $delay_minutes = isset($options['mxchat_auto_email_transcript_delay']) ?
711		- intval($options['mxchat_auto_email_transcript_delay']) : 30;
712		-
713		- // Clear any existing scheduled event for this session
714		- $hook = 'mxchat_send_delayed_transcript';
715		- $args = array($session_id);
716		- $timestamp = wp_next_scheduled($hook, $args);
717		-
718		- if ($timestamp) {
719		- wp_unschedule_event($timestamp, $hook, $args);
720		- }
721		-
722		- // Schedule new event
723		- $schedule_time = time() + ($delay_minutes * 60);
724		- wp_schedule_single_event($schedule_time, $hook, $args);
725		-}
726		-
727		-/**
728		- * Check if chat messages contain contact information (email or phone number)
729		- *
730		- * @param array $messages Array of message objects with 'message' property
731		- * @param object|null $session_data Session data object with user_email property
732		- * @return bool True if contact info found, false otherwise
733		- */
734		-private function chat_contains_contact_info($messages, $session_data = null) {
735		- // Check if session already has a stored email
736		- if ($session_data && !empty($session_data->user_email)) {
737		- return true;
738		- }
739		-
740		- // Email regex pattern
741		- $email_pattern = '/\b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Z|a-z]{2,}\b/';
742		-
743		- // Phone number patterns (covers various formats including international, WhatsApp style)
744		- // Matches: +1234567890, (123) 456-7890, 123-456-7890, 123.456.7890, 1234567890, +1 234 567 8900, etc.
745		- $phone_pattern = '/(?:\+?\d{1,3}[-.\s]?)?\(?\d{2,4}\)?[-.\s]?\d{2,4}[-.\s]?\d{2,4}(?:[-.\s]?\d{1,4})?/';
746		-
747		- // Only check user messages (not assistant responses)
748		- foreach ($messages as $msg) {
749		- if ($msg->role !== 'user') {
750		- continue;
751		- }
752		-
753		- $message_text = $msg->message;
754		-
755		- // Check for email
756		- if (preg_match($email_pattern, $message_text)) {
757		- return true;
758		- }
759		-
760		- // Check for phone number (must be at least 7 digits total to avoid false positives)
761		- if (preg_match($phone_pattern, $message_text, $matches)) {
762		- // Count actual digits to avoid matching short numbers
763		- $digits_only = preg_replace('/\D/', '', $matches[0]);
764		- if (strlen($digits_only) >= 7) {
765		- return true;
766		- }
767		- }
768		- }
769		-
770		- return false;
771		-}
772		-
773		-/**
774		- * Send the delayed transcript email with .txt attachment
775		- */
776		-public function mxchat_send_delayed_transcript($session_id) {
777		- global $wpdb;
778		-
779		- $options = get_option('mxchat_transcripts_options');
780		-
781		- // Get notification email
782		- $to = !empty($options['mxchat_notification_email']) ?
783		- $options['mxchat_notification_email'] :
784		- get_option('admin_email');
785		-
786		- if (!is_email($to)) {
787		- return false;
788		- }
789		-
790		- // Get all messages for this session
791		- $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
792		- $messages = $wpdb->get_results($wpdb->prepare(
793		- "SELECT role, message, timestamp FROM {$table_name}
794		- WHERE session_id = %s
795		- ORDER BY timestamp ASC",
796		- $session_id
797		- ));
798		-
799		- if (empty($messages)) {
800		- return false;
801		- }
802		-
803		- // Get session metadata
804		- $sessions_table = $wpdb->prefix . 'mxchat_sessions';
805		- $session_data = $wpdb->get_row($wpdb->prepare(
806		- "SELECT * FROM {$sessions_table} WHERE session_id = %s",
807		- $session_id
808		- ));
809		-
810		- // Check if contact info is required and if it's present
811		- $require_contact = !empty($options['mxchat_auto_email_transcript_require_contact']);
812		- if ($require_contact && !$this->chat_contains_contact_info($messages, $session_data)) {
813		- // Contact info required but not found - skip sending
814		- return false;
815		- }
816		-
817		- // Build transcript content
818		- $transcript_content = "Chat Transcript\n";
819		- $transcript_content .= "================\n\n";
820		- $transcript_content .= "Session ID: " . $session_id . "\n";
821		-
822		- if ($session_data) {
823		- $transcript_content .= "User: " . ($session_data->user_identifier ?: 'Guest') . "\n";
824		- $transcript_content .= "Email: " . ($session_data->user_email ?: 'Not provided') . "\n";
825		- $transcript_content .= "Started: " . $session_data->created_at . "\n";
826		- }
827		-
828		- $transcript_content .= "\n" . str_repeat("=", 50) . "\n\n";
829		-
830		- // Add messages
831		- foreach ($messages as $msg) {
832		- $role_label = ($msg->role === 'user') ? 'User' : 'Assistant';
833		- $transcript_content .= "[{$msg->timestamp}] {$role_label}:\n";
834		- $transcript_content .= $msg->message . "\n\n";
835		- }
836		-
837		- // Create temporary file for attachment using WP_Filesystem
838		- $upload_dir = wp_upload_dir();
839		- $temp_file = $upload_dir['basedir'] . '/mxchat-transcript-' . $session_id . '.txt';
840		- global $wp_filesystem;
841		- if (empty($wp_filesystem)) {
842		- require_once ABSPATH . 'wp-admin/includes/file.php';
843		- WP_Filesystem();
844		- }
845		- $wp_filesystem->put_contents($temp_file, $transcript_content, FS_CHMOD_FILE);
846		-
847		- // Prepare email
848		- $subject = sprintf('[%s] Chat Transcript - Session %s', get_bloginfo('name'), substr($session_id, 0, 8));
849		-
850		- $message = "Please find attached the full chat transcript.\n\n";
851		- $message .= "Session ID: {$session_id}\n";
852		-
853		- if ($session_data) {
854		- $message .= "User: " . ($session_data->user_identifier ?: 'Guest') . "\n";
855		- $message .= "Email: " . ($session_data->user_email ?: 'Not provided') . "\n";
856		- }
857		-
858		- $message .= "\nView online: " . admin_url('admin.php?page=mxchat-transcripts');
859		-
860		- // Send email with attachment
861		- $attachments = array($temp_file);
862		- $result = wp_mail($to, $subject, $message, '', $attachments);
863		-
864		- // Clean up temporary file
865		- if (file_exists($temp_file)) {
866		- unlink($temp_file);
867		- }
868		-
869		- return $result;
870		-}
871		-
872		-
873		-
874	546	public function mxchat_handle_save_email_and_response() {
875	547	//error_log('[DEBUG] ---------- mxchat_handle_save_email_and_response START ----------');
876	548	//error_log('DEBUG: POST data: ' . print_r($_POST, true));
877	549
878		- nocache_headers();
879		-
880	550	// Validate nonce
881	551	if (!isset($_POST['nonce']) || !wp_verify_nonce($_POST['nonce'], 'mxchat_chat_nonce')) {
882	552	//error_log(esc_html__('[ERROR] Invalid nonce in mxchat_handle_save_email_and_response', 'mxchat'));
883	553	wp_send_json_error(['message' => esc_html__('Invalid nonce.', 'mxchat')]);
		@@ -889,9 +559,9 @@
889	559	$name = isset($_POST['name']) ? sanitize_text_field($_POST['name']) : '';
890	560
891	561	//error_log("[DEBUG] handle_save_email_and_response -> session_id: {$session_id}, email: {$email}, name: {$name}");
892	562
893		- if (empty($session_id) || $session_id === 'null' || empty($email)) {
	563	+ if (empty($session_id) || empty($email)) {
894	564	//error_log("[ERROR] Missing session_id or email: session_id={$session_id}, email={$email}");
895	565	wp_send_json_error(['message' => esc_html__('Session ID or email is missing.', 'mxchat')]);
896	566	wp_die();
897	567	}
		@@ -908,15 +578,15 @@
908	578	}
909	579
910	580	// 1) Always store email in wp_options
911	581	$email_option_key = "mxchat_email_{$session_id}";
912		- update_option($email_option_key, $email, 'no');
	582	+ update_option($email_option_key, $email);
913	583	//error_log("[DEBUG] handle_save_email_and_response -> updated option: {$email_option_key} => {$email}");
914	584
915	585	// Store name in wp_options if provided
916	586	if (!empty($name)) {
917	587	$name_option_key = "mxchat_name_{$session_id}";
918		- update_option($name_option_key, $name, 'no');
	588	+ update_option($name_option_key, $name);
919	589	//error_log("[DEBUG] handle_save_email_and_response -> updated option: {$name_option_key} => {$name}");
920	590	}
921	591
922	592	// 2) (Optional) Also store in DB if a row already exists
		@@ -960,10 +630,8 @@
960	630
961	631	public function mxchat_check_email_provided() {
962	632	//error_log('[DEBUG] ---------- mxchat_check_email_provided START ----------');
963	633
964		- nocache_headers();
965		-
966	634	if (!isset($_POST['nonce']) || !wp_verify_nonce($_POST['nonce'], 'mxchat_chat_nonce')) {
967	635	//error_log('[ERROR] Invalid nonce in mxchat_check_email_provided');
968	636	wp_send_json_error(['message' => esc_html__('Invalid nonce', 'mxchat')]);
969	637	}
		@@ -968,9 +636,9 @@
968	636	wp_send_json_error(['message' => esc_html__('Invalid nonce', 'mxchat')]);
969	637	}
970	638
971	639	$session_id = isset($_POST['session_id']) ? sanitize_text_field($_POST['session_id']) : '';
972		- if (empty($session_id) || $session_id === 'null') {
	640	+ if (empty($session_id)) {
973	641	//error_log('[ERROR] No session ID provided in mxchat_check_email_provided');
974	642	wp_send_json_error(['message' => esc_html__('No session ID provided', 'mxchat')]);
975	643	}
976	644
		@@ -1027,42 +695,15 @@
1027	695	wp_send_json_error(['message' => esc_html__('No email found', 'mxchat')]);
1028	696	}
1029	697	}
1030	698
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	699	public function mxchat_handle_chat_request() {
1059	700	global $wpdb;
1060	701
1061	702	// Debug: Log incoming bot_id
1062	703	$bot_id = isset($_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);
	704	+ error_log("=== MXCHAT DEBUG: Starting chat request ===");
	705	+ error_log("MXCHAT DEBUG: Bot ID received: " . $bot_id);
1065	706
1066	707	// Get bot-specific options
1067	708	$bot_options = $this->get_bot_options($bot_id);
1068	709	$current_options = !empty($bot_options) ? $bot_options : $this->options;
		@@ -1067,19 +708,29 @@
1067	708	$bot_options = $this->get_bot_options($bot_id);
1068	709	$current_options = !empty($bot_options) ? $bot_options : $this->options;
1069	710
1070	711	// 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'));
	712	+ $is_streaming = isset($_POST['action']) && $_POST['action'] === 'mxchat_stream_chat' &&
	713	+ isset($current_options['enable_streaming_toggle']) && $current_options['enable_streaming_toggle'] === 'on';
	714	+
	715	+ // Set streaming headers if needed
	716	+ if ($is_streaming) {
	717	+ // Disable output buffering
	718	+ while (ob_get_level()) {
	719	+ ob_end_flush(); // Changed from ob_end_clean()
	720	+ }
	721	+
	722	+ // Set headers for SSE
	723	+ header('Content-Type: text/event-stream');
	724	+ header('Cache-Control: no-cache');
	725	+ header('Connection: keep-alive');
	726	+ header('X-Accel-Buffering: no');
	727	+
	728	+ // Add these new lines:
	729	+ ob_implicit_flush(true);
	730	+ flush();
	731	+ }
1075	732
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	733	// Check if MX Chat Moderation is active
1083	734	if (class_exists('MX_Chat_Moderation')) {
1084	735	// Get user email and IP
1085	736	$user_email = '';
		@@ -1144,31 +795,13 @@
1144	795
1145	796	// Rest of your existing code...
1146	797	$session_id = isset($_POST['session_id']) ? sanitize_text_field($_POST['session_id']) : '';
1147	798
1148		- // Treat the literal strings 'null' / 'undefined' as missing too. Browser edge cases
1149		- // (Safari ITP, private mode, cross-origin iframes with partitioned storage) can cause
1150		- // the frontend FormData.append() to stringify a null session_id into the literal
1151		- // "null", which would otherwise pass empty() and pollute the transcripts table with
1152		- // ghost sessions that group every visitor's first message under one row.
1153		- if ($session_id === 'null' || $session_id === 'undefined') {
1154		- $session_id = '';
1155		- }
1156		-
1157	799	if (empty($session_id)) {
1158	800	wp_send_json_error(esc_html__('Session ID is missing.', 'mxchat'));
1159	801	wp_die();
1160	802	}
1161	803
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}");
1166		-
1167		- if (!$session_owner || $session_owner !== $current_user_identifier) {
1168		- update_option("mxchat_session_owner_{$session_id}", $current_user_identifier, 'no');
1169		- }
1170		-
1171	804	// Validate and sanitize the incoming message
1172	805	if (empty($_POST['message'])) {
1173	806	wp_send_json_error(esc_html__('No message received.', 'mxchat'));
1174	807	wp_die();
		@@ -1544,8 +1177,38 @@
1544	1177	}
1545	1178	}
1546	1179	}
1547	1180
	1181	+ // Check if there's an active recommendation flow session
	1182	+ $flow_state = get_option("mxchat_sr_flow_state_{$session_id}", array());
	1183	+ if (!empty($flow_state) && isset($flow_state['flow_id'])) {
	1184	+ // Create a dummy intent object that matches the original intent
	1185	+ $dummy_intent = new stdClass();
	1186	+ $dummy_intent->intent_label = 'Recommendation Flow ' . $flow_state['flow_id'];
	1187	+ $dummy_intent->phrases = ''; // Empty phrases to avoid matching the original trigger
	1188	+
	1189	+ // Call the recommendation flow handler directly
	1190	+ $response_data = apply_filters('mxchat_sr_recommendation_flow', false, $message, $user_id, $session_id, $dummy_intent);
	1191	+
	1192	+ // If the handler returned a response, send it
	1193	+ if (is_array($response_data) && (isset($response_data['text']) || isset($response_data['html']))) {
	1194	+ // Save the bot's response to the chat history
	1195	+ if (!empty($response_data['text'])) {
	1196	+ $this->mxchat_save_chat_message($session_id, 'bot', $response_data['text']);
	1197	+ }
	1198	+ if (!empty($response_data['html'])) {
	1199	+ $this->mxchat_save_chat_message($session_id, 'bot', $response_data['html']);
	1200	+ }
	1201	+
	1202	+ if ($testing_data !== null) {
	1203	+ $response_data['testing_data'] = $testing_data;
	1204	+ }
	1205	+
	1206	+ // Send the response
	1207	+ wp_send_json($response_data);
	1208	+ wp_die();
	1209	+ }
	1210	+ }
1548	1211
1549	1212	// Step 2: Detect intent and handle intent-based responses
1550	1213	$intent_result = $this->mxchat_check_intent_and_invoke_callback($message, $user_id, $session_id);
1551	1214
		@@ -1564,46 +1227,58 @@
1564	1227	'text' => $intent_result['text'] ?? '',
1565	1228	'html' => $intent_result['html'] ?? '',
1566	1229	'session_id' => $session_id
1567	1230	];
1568		-
1569		- // IMPORTANT: Include chat_mode if present (for WhatsApp, Slack, etc.)
1570		- if (isset($intent_result['chat_mode'])) {
1571		- $response_data['chat_mode'] = $intent_result['chat_mode'];
1572		- }
1573		-
	1231	+
1574	1232	if ($testing_data !== null) {
1575	1233	$response_data['testing_data'] = $testing_data;
1576	1234	}
1577		-
	1235	+
	1236	+ // Clear streaming headers if they were set
	1237	+ if ($is_streaming) {
	1238	+ header_remove('Content-Type');
	1239	+ header_remove('Cache-Control');
	1240	+ header_remove('Connection');
	1241	+ header_remove('X-Accel-Buffering');
	1242	+ header('Content-Type: application/json');
	1243	+ }
	1244	+
1578	1245	wp_send_json($response_data);
1579	1246	wp_die();
1580	1247	} else if ($intent_result === true && (!empty($this->fallbackResponse['text']) || !empty($this->fallbackResponse['html']))) {
1581	1248	// Intent returned true and set fallbackResponse
1582		-
1583		- // SAVE TO TRANSCRIPT
	1249	+
	1250	+ // SAVE TO TRANSCRIPT FIRST
1584	1251	if (!empty($this->fallbackResponse['text'])) {
1585	1252	$this->mxchat_save_chat_message($session_id, 'bot', $this->fallbackResponse['text']);
1586	1253	}
1587		- // Save action HTML (product cards, featured products, etc.) so it renders in transcripts
1588	1254	if (!empty($this->fallbackResponse['html'])) {
1589	1255	$this->mxchat_save_chat_message($session_id, 'bot', $this->fallbackResponse['html']);
1590	1256	}
1591		-
	1257	+
1592	1258	$response_data = [
1593	1259	'text' => $this->fallbackResponse['text'] ?? '',
1594	1260	'html' => $this->fallbackResponse['html'] ?? '',
1595	1261	'session_id' => $session_id
1596	1262	];
1597		-
	1263	+
1598	1264	if (isset($this->fallbackResponse['chat_mode'])) {
1599	1265	$response_data['chat_mode'] = $this->fallbackResponse['chat_mode'];
1600	1266	}
1601		-
	1267	+
1602	1268	if ($testing_data !== null) {
1603	1269	$response_data['testing_data'] = $testing_data;
1604	1270	}
1605		-
	1271	+
	1272	+ // Clear streaming headers if they were set
	1273	+ if ($is_streaming) {
	1274	+ header_remove('Content-Type');
	1275	+ header_remove('Cache-Control');
	1276	+ header_remove('Connection');
	1277	+ header_remove('X-Accel-Buffering');
	1278	+ header('Content-Type: application/json');
	1279	+ }
	1280	+
1606	1281	wp_send_json($response_data);
1607	1282	wp_die();
1608	1283	}
1609	1284	}
		@@ -1608,13 +1283,11 @@
1608	1283	}
1609	1284	}
1610	1285
1611	1286	// If we get here, no intent matched OR the intent didn't provide a usable response
1612		-
	1287	+
1613	1288	// 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);
	1289	+ $conversation_history = $this->mxchat_fetch_conversation_history_for_ai($session_id);
1617	1290	$this->mxchat_increment_chat_count();
1618	1291
1619	1292	// Generate embedding for the user's query - USE BOT-SPECIFIC API KEY
1620	1293	$api_key = $current_options['api_key'] ?? $this->options['api_key'];
		@@ -1623,50 +1296,22 @@
1623	1296	// Check if the embedding generation returned an error
1624	1297	if (is_array($user_message_embedding) && isset($user_message_embedding['error'])) {
1625	1298	$error_message = $user_message_embedding['error'];
1626	1299	$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		- }
	1300	+
	1301	+ wp_send_json_error([
	1302	+ 'error_message' => $error_message,
	1303	+ 'error_code' => $error_code
	1304	+ ]);
1645	1305	wp_die();
1646	1306	}
1647		-
	1307	+
1648	1308	// Check if the embedding is valid
1649	1309	if (!is_array($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		- }
	1310	+ wp_send_json_error([
	1311	+ 'error_message' => esc_html__('Unable to process your message. The embedding service is not responding correctly.', 'mxchat'),
	1312	+ 'error_code' => 'invalid_embedding'
	1313	+ ]);
1669	1314	wp_die();
1670	1315	}
1671	1316
1672	1317	// Build context with both knowledge base and PDF content if available
		@@ -1692,71 +1337,26 @@
1692	1337	$context_content .= "Page Content: " . $page_context['content'] . "\n";
1693	1338	$context_content .= "===== END CURRENT PAGE CONTEXT =====\n\n";
1694	1339	}
1695	1340
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;
	1341	+ // Get relevant content from knowledge base - PASS BOT_ID
	1342	+ $relevant_content = $this->mxchat_find_relevant_content($user_message_embedding, $bot_id);
1703	1343
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($system_instruction_urls[0]) . " URLs from system instructions");
1722		- }
	1344	+ // ===== CAPTURE REAL SIMILARITY DATA FOR ADMINS =====
	1345	+ if ($testing_data !== null && $this->last_similarity_analysis !== null) {
	1346	+ // Update testing data with the REAL similarity analysis
	1347	+ $testing_data['top_matches'] = $this->last_similarity_analysis['top_matches'];
	1348	+ $testing_data['total_documents_checked'] = $this->last_similarity_analysis['total_checked'] ?? 0;
	1349	+ $testing_data['knowledge_base_type'] = $this->last_similarity_analysis['knowledge_base_type'];
1723	1350	}
	1351	+ // ===== END SIMILARITY DATA CAPTURE =====
1724	1352
1725		-// ===== CAPTURE REAL SIMILARITY DATA FOR ADMINS =====
1726		-if ($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($this->current_valid_urls) . " approved URLs to testing data");
1740		-}
1741		-
1742	1353	if (!empty($relevant_content)) {
1743	1354	$context_content .= "===== OFFICIAL KNOWLEDGE DATABASE CONTENT =====\n" . $relevant_content . "\n===== END OF OFFICIAL KNOWLEDGE DATABASE CONTENT =====\n\n";
1744	1355	} else {
1745	1356	$context_content .= "===== NO RELEVANT CONTENT FOUND IN KNOWLEDGE DATABASE =====\n";
1746	1357	}
1747		-
1748		- // NEW: Add approved URLs list to context for AI (only if citation links enabled)
1749		- if ($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		-
	1358	+
1759	1359	// Check for and include PDF content
1760	1360	$pdf_url = get_transient('mxchat_pdf_url_' . $session_id);
1761	1361	$pdf_embeddings = get_transient('mxchat_pdf_embeddings_' . $session_id);
1762	1362	$pdf_filename = get_transient('mxchat_pdf_filename_' . $session_id);
		@@ -1788,9 +1388,9 @@
1788	1388
1789	1389	$context_content = apply_filters('mxchat_prepare_context', $context_content, $session_id);
1790	1390
1791	1391	// 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';
	1392	+ $selected_model = isset($current_options['model']) ? $current_options['model'] : 'gpt-4o';
1793	1393
1794	1394	$response = $this->mxchat_generate_response(
1795	1395	$context_content,
1796	1396	$current_options['api_key'] ?? $this->options['api_key'],
		@@ -1797,14 +1397,13 @@
1797	1397	$current_options['xai_api_key'] ?? $this->options['xai_api_key'],
1798	1398	$current_options['claude_api_key'] ?? $this->options['claude_api_key'],
1799	1399	$current_options['deepseek_api_key'] ?? $this->options['deepseek_api_key'],
1800	1400	$current_options['gemini_api_key'] ?? $this->options['gemini_api_key'],
1801		- $current_options['openrouter_api_key'] ?? $this->options['openrouter_api_key'],
1802	1401	$conversation_history,
1803	1402	$is_streaming,
1804	1403	$session_id,
1805	1404	$testing_data,
1806		- $selected_model
	1405	+ $selected_model // ADD THIS LINE
1807	1406	);
1808	1407
1809	1408	// Handle streaming vs non-streaming responses
1810	1409	if ($is_streaming) {
		@@ -1812,27 +1411,11 @@
1812	1411	if ($response === true) {
1813	1412	wp_die();
1814	1413	}
1815	1414	// If we get here, streaming fell back to regular response, continue
1816		- // But if there's an error, we need to send it as SSE format since headers are already set
1817		- if (is_array($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' => $error_message
1827		- ]) . "\n\n";
1828		- echo "data: [DONE]\n\n";
1829		- flush();
1830		- wp_die();
1831		- }
1832	1415	}
1833		-
1834		- // Check if the response is an error array (non-streaming mode)
	1416	+
	1417	+ // Check if the response is an error array
1835	1418	if (is_array($response) && isset($response['error'])) {
1836	1419	wp_send_json_error([
1837	1420	'error_message' => $response['error'],
1838	1421	'error_code' => $response['error_code'] ?? 'api_error'
		@@ -1839,51 +1422,11 @@
1839	1422	]);
1840	1423	wp_die();
1841	1424	}
1842	1425
1843		- // DEBUG: Check what we have
1844		- //error_log("=== BEFORE URL VALIDATION ===");
1845		- //error_log("current_valid_urls is empty? " . (empty($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 =====
	1426	+ // If we get here, the response is valid text
	1427	+ $this->mxchat_save_chat_message($session_id, 'bot', $response);
1857	1428
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, $rag_context_for_storage);
1885		-
1886	1429	// Step 5: Save additional content if available
1887	1430	if (!empty($this->productCardHtml)) {
1888	1431	$this->mxchat_save_chat_message($session_id, 'bot', $this->productCardHtml);
1889	1432	}
		@@ -1892,13 +1435,8 @@
1892	1435	$this->mxchat_save_chat_message($session_id, 'bot', $this->fallbackResponse['html']);
1893	1436	}
1894	1437
1895	1438	// Step 6: Return the response
1896		- // DEBUG: Check if newlines exist in the response
1897		- //error_log("=== MXCHAT NON-STREAMING RESPONSE DEBUG ===");
1898		- //error_log("Response has newlines: " . (strpos($response, "\n") !== false ? 'YES' : 'NO'));
1899		- //error_log("Response first 500 chars: " . substr($response, 0, 500));
1900		-
1901	1439	$response_data = [
1902	1440	'text' => $response,
1903	1441	'html' => !empty($this->productCardHtml) ? $this->productCardHtml : ($this->fallbackResponse['html'] ?? ''),
1904	1442	'session_id' => $session_id
		@@ -1903,18 +1441,8 @@
1903	1441	'html' => !empty($this->productCardHtml) ? $this->productCardHtml : ($this->fallbackResponse['html'] ?? ''),
1904	1442	'session_id' => $session_id
1905	1443	];
1906	1444
1907		- // Include vectorstore error info for admin debugging (only visible to admins via testing_data)
1908		- if (!empty($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'] = $this->last_vectorstore_error;
1915		- }
1916		-
1917	1445	// Always add testing data for admins (no toggle needed)
1918	1446	if ($testing_data !== null) {
1919	1447	$response_data['testing_data'] = $testing_data;
1920	1448	}
		@@ -1922,8 +1450,9 @@
1922	1450	wp_send_json($response_data);
1923	1451	wp_die();
1924	1452	}
1925	1453
	1454	+
1926	1455	/**
1927	1456	* Get bot-specific options for multi-bot functionality
1928	1457	* Falls back to default options if bot_id is 'default' or multi-bot add-on is not active
1929	1458	*/
		@@ -1928,12 +1457,12 @@
1928	1457	* Falls back to default options if bot_id is 'default' or multi-bot add-on is not active
1929	1458	*/
1930	1459	// Also debug the bot options retrieval
1931	1460	private function get_bot_options($bot_id = 'default') {
1932		- //error_log("MXCHAT DEBUG: get_bot_options called for bot: " . $bot_id);
	1461	+ error_log("MXCHAT DEBUG: get_bot_options called for bot: " . $bot_id);
1933	1462
1934	1463	if ($bot_id === 'default' || !class_exists('MxChat_Multi_Bot_Manager')) {
1935		- //error_log("MXCHAT DEBUG: Using default options (no multi-bot or bot is 'default')");
	1464	+ error_log("MXCHAT DEBUG: Using default options (no multi-bot or bot is 'default')");
1936	1465	return array();
1937	1466	}
1938	1467
1939	1468	$bot_options = apply_filters('mxchat_get_bot_options', array(), $bot_id);
		@@ -1938,11 +1467,11 @@
1938	1467
1939	1468	$bot_options = apply_filters('mxchat_get_bot_options', array(), $bot_id);
1940	1469
1941	1470	if (!empty($bot_options)) {
1942		- //error_log("MXCHAT DEBUG: Got bot-specific options from filter");
	1471	+ error_log("MXCHAT DEBUG: Got bot-specific options from filter");
1943	1472	if (isset($bot_options['similarity_threshold'])) {
1944		- //error_log(" - similarity_threshold: " . $bot_options['similarity_threshold']);
	1473	+ error_log(" - similarity_threshold: " . $bot_options['similarity_threshold']);
1945	1474	}
1946	1475	}
1947	1476
1948	1477	return is_array($bot_options) ? $bot_options : array();
		@@ -1953,13 +1482,13 @@
1953	1482	* Used in the knowledge retrieval functions
1954	1483	*/
1955	1484	// Also add debugging to your get_bot_pinecone_config function
1956	1485	private function get_bot_pinecone_config($bot_id = 'default') {
1957		- //error_log("MXCHAT DEBUG: get_bot_pinecone_config called for bot: " . $bot_id);
	1486	+ error_log("MXCHAT DEBUG: get_bot_pinecone_config called for bot: " . $bot_id);
1958	1487
1959	1488	// If default bot or multi-bot add-on not active, use default Pinecone config
1960	1489	if ($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')");
	1490	+ error_log("MXCHAT DEBUG: Using default Pinecone config (no multi-bot or bot is 'default')");
1962	1491	$addon_options = get_option('mxchat_pinecone_addon_options', array());
1963	1492	$config = array(
1964	1493	'use_pinecone' => (isset($addon_options['mxchat_use_pinecone']) && $addon_options['mxchat_use_pinecone'] === '1'),
1965	1494	'api_key' => $addon_options['mxchat_pinecone_api_key'] ?? '',
		@@ -1965,24 +1494,24 @@
1965	1494	'api_key' => $addon_options['mxchat_pinecone_api_key'] ?? '',
1966	1495	'host' => $addon_options['mxchat_pinecone_host'] ?? '',
1967	1496	'namespace' => $addon_options['mxchat_pinecone_namespace'] ?? ''
1968	1497	);
1969		- //error_log("MXCHAT DEBUG: Default config - use_pinecone: " . ($config['use_pinecone'] ? 'true' : 'false'));
	1498	+ error_log("MXCHAT DEBUG: Default config - use_pinecone: " . ($config['use_pinecone'] ? 'true' : 'false'));
1970	1499	return $config;
1971	1500	}
1972	1501
1973		- //error_log("MXCHAT DEBUG: Calling filter 'mxchat_get_bot_pinecone_config' for bot: " . $bot_id);
	1502	+ error_log("MXCHAT DEBUG: Calling filter 'mxchat_get_bot_pinecone_config' for bot: " . $bot_id);
1974	1503
1975	1504	// Hook for multi-bot add-on to provide bot-specific Pinecone config
1976	1505	$bot_pinecone_config = apply_filters('mxchat_get_bot_pinecone_config', array(), $bot_id);
1977	1506
1978	1507	if (!empty($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'));
	1508	+ error_log("MXCHAT DEBUG: Got bot-specific config from filter");
	1509	+ error_log(" - use_pinecone: " . (isset($bot_pinecone_config['use_pinecone']) ? ($bot_pinecone_config['use_pinecone'] ? 'true' : 'false') : 'not set'));
	1510	+ error_log(" - host: " . ($bot_pinecone_config['host'] ?? 'not set'));
	1511	+ error_log(" - namespace: " . ($bot_pinecone_config['namespace'] ?? 'not set'));
1983	1512	} else {
1984		- //error_log("MXCHAT DEBUG: Filter returned empty config!");
	1513	+ error_log("MXCHAT DEBUG: Filter returned empty config!");
1985	1514	}
1986	1515
1987	1516	return is_array($bot_pinecone_config) ? $bot_pinecone_config : array();
1988	1517	}
		@@ -1992,63 +1521,35 @@
1992	1521	private function mxchat_check_intent_and_invoke_callback($message, $user_id, $session_id) {
1993	1522	global $wpdb;
1994	1523	$chat_mode = get_option("mxchat_mode_{$session_id}", 'ai');
1995	1524
1996		- // Get the current bot_id
	1525	+ // NEW: Get the current bot_id
1997	1526	$current_bot_id = $this->get_current_bot_id($session_id);
1998	1527
1999	1528	// Generate the user embedding
2000	1529	$user_embedding = $this->mxchat_generate_embedding($message, $this->options['api_key']);
2001		-
	1530	+
2002	1531	// Check if embedding generation returned an error
2003	1532	if (is_array($user_embedding) && isset($user_embedding['error'])) {
2004	1533	$error_message = $user_embedding['error'];
2005	1534	$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		- }
	1535	+
	1536	+ wp_send_json_error([
	1537	+ 'error_message' => $error_message,
	1538	+ 'error_code' => $error_code
	1539	+ ]);
2024	1540	wp_die();
2025	1541	}
2026		-
	1542	+
2027	1543	// Check if embedding is valid
2028	1544	if (!is_array($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		- }
	1545	+ wp_send_json_error([
	1546	+ 'error_message' => esc_html__('Unable to process your message. The embedding service is not responding correctly.', 'mxchat'),
	1547	+ 'error_code' => 'invalid_embedding'
	1548	+ ]);
2048	1549	wp_die();
2049	1550	}
2050		-
	1551	+
2051	1552	// Fetch intents from the database
2052	1553	$table_name = $wpdb->prefix . 'mxchat_intents';
2053	1554	if ($chat_mode === 'agent') {
2054	1555	$query = $wpdb->prepare(
		@@ -2058,29 +1559,19 @@
2058	1559	$intents = $wpdb->get_results($query);
2059	1560	} else {
2060	1561	$intents = $wpdb->get_results("SELECT * FROM $table_name WHERE enabled = 1 OR enabled IS NULL");
2061	1562	}
2062		-
	1563	+
2063	1564	if (empty($intents)) {
2064	1565	return false;
2065	1566	}
2066		-
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		-
	1567	+
2077	1568	$highest_similarity = -INF;
2078	1569	$matched_intent = null;
2079		-
	1570	+
2080	1571	// Array to store action analysis for testing panel
2081	1572	$action_analysis = [];
2082		-
	1573	+
2083	1574	foreach ($intents as $intent) {
2084	1575	// Additional check for enabled state
2085	1576	$is_enabled = isset($intent->enabled) ? (bool)$intent->enabled : true;
2086	1577	if (!$is_enabled) {
		@@ -2085,56 +1576,26 @@
2085	1576	$is_enabled = isset($intent->enabled) ? (bool)$intent->enabled : true;
2086	1577	if (!$is_enabled) {
2087	1578	continue;
2088	1579	}
2089		-
2090		- // Check if this action is enabled for the current bot
	1580	+
	1581	+ // NEW: Check if this action is enabled for the current bot
2091	1582	if (!$this->is_action_enabled_for_bot($intent, $current_bot_id)) {
2092	1583	continue;
2093	1584	}
2094		-
2095		- $best_similarity = -INF;
2096		- $matched_phrase_text = '';
2097		-
2098		- // Check legacy embedding vector (existing behavior)
	1585	+
2099	1586	$intent_embedding_serialized = $intent->embedding_vector;
2100	1587	$intent_embedding = $intent_embedding_serialized
2101	1588	? unserialize($intent_embedding_serialized, ['allowed_classes' => false])
2102	1589	: 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		- $matched_phrase_text = 'legacy';
2109		- }
2110		- }
2111		-
2112		- // Check individual phrase vectors
2113		- if (isset($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 = $phrase_row->phrase;
2125		- }
2126		- }
2127		- }
2128		-
2129		- // Skip if no valid embedding was found at all
2130		- if ($best_similarity === -INF) {
	1590	+
	1591	+ if (!is_array($intent_embedding)) {
2131	1592	continue;
2132	1593	}
2133		-
2134		- $similarity = $best_similarity;
	1594	+
	1595	+ $similarity = $this->mxchat_calculate_cosine_similarity($user_embedding, $intent_embedding);
2135	1596	$intent_threshold = isset($intent->similarity_threshold) ? $intent->similarity_threshold : 0.85;
2136		-
	1597	+
2137	1598	// Store action analysis data for testing panel
2138	1599	$action_analysis[] = [
2139	1600	'intent_label' => $intent->intent_label,
2140	1601	'callback_function' => $intent->callback_function,
		@@ -2142,12 +1603,11 @@
2142	1603	'similarity_percentage' => round($similarity * 100, 2),
2143	1604	'threshold' => $intent_threshold,
2144	1605	'threshold_percentage' => round($intent_threshold * 100, 2),
2145	1606	'above_threshold' => $similarity >= $intent_threshold,
2146		- 'matched_phrase' => $matched_phrase_text,
2147	1607	'triggered' => false // Will be updated below if this intent is triggered
2148	1608	];
2149		-
	1609	+
2150	1610	if ($similarity >= $intent_threshold && $similarity > $highest_similarity) {
2151	1611	$highest_similarity = $similarity;
2152	1612	$matched_intent = $intent;
2153	1613	}
		@@ -2218,22 +1678,16 @@
2218	1678	// If enabled_bots column doesn't exist or is null, assume it's enabled for all bots (backward compatibility)
2219	1679	if (!isset($intent->enabled_bots) || empty($intent->enabled_bots)) {
2220	1680	return true;
2221	1681	}
2222		-
	1682	+
2223	1683	$enabled_bots = json_decode($intent->enabled_bots, true);
2224		-
	1684	+
2225	1685	// If JSON decode fails or returns empty array, assume enabled for all (backward compatibility)
2226	1686	if (!is_array($enabled_bots) || empty($enabled_bots)) {
2227	1687	return true;
2228	1688	}
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		- $bot_id = 'default';
2234		- }
2235		-
	1689	+
2236	1690	// Check if the current bot is in the enabled bots list
2237	1691	return in_array($bot_id, $enabled_bots);
2238	1692	}
2239	1693
		@@ -2271,23 +1725,18 @@
2271	1725	}
2272	1726
2273	1727	public function mxchat_generate_image($message, $user_id, $session_id) {
2274	1728	//error_log("Starting image generation for message: " . $message);
2275		-
2276		- // Prepare a prompt for OpenAI image generation
	1729	+
	1730	+ // Prepare a prompt for DALL-E
2277	1731	$prompt = esc_html__('Create an image of ', 'mxchat') . sanitize_text_field($message);
2278		-
2279		- // Opt-in routing: when 'custom_provider_for_images' is on, route image gen
2280		- // through the configured Custom (OpenAI-compatible) /images/generations route.
2281		- if (!empty($this->options['custom_provider_for_images']) && $this->options['custom_provider_for_images'] === 'on') {
2282		- $image_response = $this->mxchat_generate_custom_image($prompt);
2283		- } else {
2284		- // Use the existing OpenAI API key
2285		- $openai_api_key = sanitize_text_field($this->options['api_key']);
2286		- // Call OpenAI GPT Image to generate an image
2287		- $image_response = $this->mxchat_generate_openai_image($prompt, $openai_api_key);
2288		- }
2289	1732
	1733	+ // Use the existing OpenAI API key
	1734	+ $openai_api_key = sanitize_text_field($this->options['api_key']);
	1735	+
	1736	+ // Call DALL-E to generate an image
	1737	+ $image_response = $this->mxchat_generate_dalle_image($prompt, $openai_api_key);
	1738	+
2290	1739	// Check if the response contains an image URL
2291	1740	if (isset($image_response['imageUrl'])) {
2292	1741	$image_url = esc_url_raw($image_response['imageUrl']);
2293	1742
		@@ -2330,103 +1779,24 @@
2330	1779	// Return the response directly instead of relying on the property
2331	1780	return $this->fallbackResponse;
2332	1781	}
2333	1782	}
2334		-
2335		-public function mxchat_generate_gemini_image($message, $user_id, $session_id) {
2336		- $prompt = esc_html__('Create an image of ', 'mxchat') . sanitize_text_field($message);
2337		-
2338		- $gemini_api_key = sanitize_text_field($this->options['gemini_api_key'] ?? '');
2339		- if (empty($gemini_api_key)) {
2340		- $response_text = esc_html__("Gemini API key is not configured.", 'mxchat');
2341		- $this->mxchat_save_chat_message($session_id, 'bot', $response_text);
2342		- return ['text' => $response_text, 'html' => '', 'images' => []];
2343		- }
2344		-
2345		- $image_response = $this->mxchat_generate_imagen_image($prompt, $gemini_api_key);
2346		-
2347		- if (isset($image_response['imageUrl'])) {
2348		- $image_url = esc_url_raw($image_response['imageUrl']);
2349		-
2350		- $response_html = '<img src="' . esc_url($image_url) . '" alt="' . esc_attr__('Generated Image', 'mxchat') . '" class="mxchat-generated-image" />';
2351		- $response_text = esc_html__('Here is the image I generated:', 'mxchat');
2352		-
2353		- $this->mxchat_save_chat_message($session_id, 'bot', $response_text);
2354		- $this->mxchat_save_chat_message($session_id, 'bot', $response_html);
2355		-
2356		- $this->fallbackResponse = [
2357		- 'text' => $response_text,
2358		- 'html' => $response_html,
2359		- 'images' => [$image_url]
2360		- ];
2361		-
2362		- return $this->fallbackResponse;
2363		- } else {
2364		- $response_text = esc_html__("I'm sorry, but I couldn't generate an image based on your request.", 'mxchat');
2365		-
2366		- $this->mxchat_save_chat_message($session_id, 'bot', $response_text);
2367		-
2368		- $this->fallbackResponse = [
2369		- 'text' => $response_text,
2370		- 'html' => '',
2371		- 'images' => []
2372		- ];
2373		-
2374		- return $this->fallbackResponse;
2375		- }
2376		-}
2377		-
2378		-private function mxchat_save_generated_image($base64_data, $mime_type = 'image/png', $prefix = 'mxchat-generated') {
2379		- $extension = ($mime_type === 'image/jpeg') ? 'jpg' : 'png';
2380		- $filename = sanitize_file_name($prefix . '-' . wp_generate_uuid4() . '.' . $extension);
2381		- $decoded = base64_decode($base64_data);
2382		-
2383		- if ($decoded === false) {
2384		- return new \WP_Error('decode_failed', esc_html__('Failed to decode image data.', 'mxchat'));
2385		- }
2386		-
2387		- $upload = wp_upload_bits($filename, null, $decoded);
2388		-
2389		- if (!empty($upload['error'])) {
2390		- return new \WP_Error('upload_failed', $upload['error']);
2391		- }
2392		-
2393		- $attach_id = wp_insert_attachment([
2394		- 'post_mime_type' => $mime_type,
2395		- 'post_title' => $prefix,
2396		- 'post_content' => '',
2397		- 'post_status' => 'inherit',
2398		- ], $upload['file']);
2399		-
2400		- if (is_wp_error($attach_id)) {
2401		- return $attach_id;
2402		- }
2403		-
2404		- require_once ABSPATH . 'wp-admin/includes/image.php';
2405		- $metadata = wp_generate_attachment_metadata($attach_id, $upload['file']);
2406		- wp_update_attachment_metadata($attach_id, $metadata);
2407		-
2408		- return esc_url_raw(wp_get_attachment_url($attach_id));
2409		-}
2410		-
2411		-private function mxchat_generate_openai_image($prompt, $api_key, $model = 'gpt-image-1', $timeout = 60) {
	1783	+private function mxchat_generate_dalle_image($prompt, $api_key, $model = 'dall-e-3', $timeout = 60) {
2412	1784	$api_url = 'https://api.openai.com/v1/images/generations';
2413	1785	$body = json_encode([
2414		- 'prompt' => sanitize_text_field($prompt),
2415		- 'n' => 1,
2416		- 'size' => '1024x1024',
2417		- 'quality' => 'medium',
2418		- 'output_format' => 'png',
2419		- 'model' => sanitize_text_field($model),
	1786	+ 'prompt' => sanitize_text_field($prompt),
	1787	+ 'n' => 1,
	1788	+ 'size' => '1024x1024',
	1789	+ 'model' => sanitize_text_field($model),
2420	1790	]);
2421	1791
2422	1792	$args = [
2423		- 'body' => $body,
	1793	+ 'body' => $body,
2424	1794	'headers' => [
2425		- 'Content-Type' => 'application/json',
	1795	+ 'Content-Type' => 'application/json',
2426	1796	'Authorization' => 'Bearer ' . sanitize_text_field($api_key),
2427	1797	],
2428		- 'method' => 'POST',
	1798	+ 'method' => 'POST',
2429	1799	'timeout' => absint($timeout),
2430	1800	];
2431	1801
2432	1802	$response = wp_remote_post($api_url, $args);
		@@ -2431,114 +1801,23 @@
2431	1801
2432	1802	$response = wp_remote_post($api_url, $args);
2433	1803
2434	1804	if (is_wp_error($response)) {
	1805	+ //error_log("DALL-E request failed: " . $response->get_error_message());
2435	1806	return ['error' => esc_html__('Error generating image: ', 'mxchat') . $response->get_error_message()];
2436	1807	}
2437	1808
2438	1809	$response_body = json_decode(wp_remote_retrieve_body($response), true);
2439	1810
2440		- $b64 = $response_body['data'][0]['b64_json'] ?? $response_body['data'][0]['b64'] ?? null;
2441		- if ($b64) {
2442		- $saved_url = $this->mxchat_save_generated_image($b64, 'image/png', 'mxchat-openai');
2443		- if (is_wp_error($saved_url)) {
2444		- return ['error' => $saved_url->get_error_message()];
2445		- }
2446		- return ['imageUrl' => $saved_url];
	1811	+ if (isset($response_body['data'][0]['url'])) {
	1812	+ return ['imageUrl' => esc_url_raw($response_body['data'][0]['url'])];
2447	1813	} else {
	1814	+ //error_log("DALL-E response error: " . wp_remote_retrieve_body($response));
2448	1815	return ['error' => esc_html__('Failed to generate image.', 'mxchat')];
2449	1816	}
2450	1817	}
2451	1818
2452	1819	/**
2453		- * Generate an image via a Custom (OpenAI-compatible) provider's /images/generations route.
2454		- * Only called when the opt-in 'custom_provider_for_images' setting is on.
2455		- */
2456		-private function mxchat_generate_custom_image($prompt, $timeout = 90) {
2457		- $cfg = $this->mxchat_resolve_custom_provider();
2458		- if (empty($cfg['base_url'])) {
2459		- return ['error' => esc_html__('Custom provider Base URL is not configured.', 'mxchat')];
2460		- }
2461		- $url = $cfg['base_url'] . '/images/generations';
2462		- if (!empty($cfg['api_version'])) {
2463		- $url .= (strpos($url, '?') === false ? '?' : '&') . 'api-version=' . rawurlencode($cfg['api_version']);
2464		- }
2465		- $body = wp_json_encode([
2466		- 'prompt' => sanitize_text_field($prompt),
2467		- 'n' => 1,
2468		- 'size' => '1024x1024',
2469		- 'model' => $cfg['model'],
2470		- ]);
2471		- $response = wp_remote_post($url, [
2472		- 'headers' => $this->mxchat_custom_provider_assoc_headers($cfg),
2473		- 'body' => $body,
2474		- 'method' => 'POST',
2475		- 'timeout' => absint($timeout),
2476		- ]);
2477		- if (is_wp_error($response)) {
2478		- return ['error' => esc_html__('Error generating image (custom provider): ', 'mxchat') . $response->get_error_message()];
2479		- }
2480		- $resp = json_decode(wp_remote_retrieve_body($response), true);
2481		- // Try b64 first (matches OpenAI shape), then url-based fallback.
2482		- $b64 = $resp['data'][0]['b64_json'] ?? $resp['data'][0]['b64'] ?? null;
2483		- if ($b64) {
2484		- $saved = $this->mxchat_save_generated_image($b64, 'image/png', 'mxchat-custom');
2485		- if (is_wp_error($saved)) {
2486		- return ['error' => $saved->get_error_message()];
2487		- }
2488		- return ['imageUrl' => $saved];
2489		- }
2490		- $remote_url = $resp['data'][0]['url'] ?? null;
2491		- if ($remote_url) {
2492		- return ['imageUrl' => esc_url_raw($remote_url)];
2493		- }
2494		- $err_msg = $resp['error']['message'] ?? esc_html__('Custom provider did not return an image.', 'mxchat');
2495		- return ['error' => esc_html($err_msg)];
2496		-}
2497		-
2498		-private function mxchat_generate_imagen_image($prompt, $api_key, $timeout = 60) {
2499		- $api_url = 'https://generativelanguage.googleapis.com/v1beta/models/imagen-4.0-generate-001:predict';
2500		-
2501		- $body = json_encode([
2502		- 'instances' => [['prompt' => sanitize_text_field($prompt)]],
2503		- 'parameters' => [
2504		- 'sampleCount' => 1,
2505		- 'aspectRatio' => '1:1',
2506		- ],
2507		- ]);
2508		-
2509		- $args = [
2510		- 'body' => $body,
2511		- 'headers' => [
2512		- 'Content-Type' => 'application/json',
2513		- 'x-goog-api-key' => sanitize_text_field($api_key),
2514		- ],
2515		- 'method' => 'POST',
2516		- 'timeout' => absint($timeout),
2517		- ];
2518		-
2519		- $response = wp_remote_post($api_url, $args);
2520		-
2521		- if (is_wp_error($response)) {
2522		- return ['error' => esc_html__('Error generating image: ', 'mxchat') . $response->get_error_message()];
2523		- }
2524		-
2525		- $response_body = json_decode(wp_remote_retrieve_body($response), true);
2526		-
2527		- $b64 = $response_body['predictions'][0]['bytesBase64Encoded'] ?? $response_body['predictions'][0]['imageBytes'] ?? null;
2528		- if ($b64) {
2529		- $mime = $response_body['predictions'][0]['mimeType'] ?? 'image/png';
2530		- $saved_url = $this->mxchat_save_generated_image($b64, $mime, 'mxchat-gemini');
2531		- if (is_wp_error($saved_url)) {
2532		- return ['error' => $saved_url->get_error_message()];
2533		- }
2534		- return ['imageUrl' => $saved_url];
2535		- } else {
2536		- return ['error' => esc_html__('Failed to generate image.', 'mxchat')];
2537		- }
2538		-}
2539		-
2540		-/**
2541	1820	* Handle web search requests.
2542	1821	*
2543	1822	* Sends the refined search query to the Brave Search API and uses the
2544	1823	* results to generate a conversational response with the AI model.
		@@ -2586,10 +1865,10 @@
2586	1865	$transient_key = 'mxchat_search_' . md5($refined_search_query);
2587	1866	$results = get_transient($transient_key);
2588	1867
2589	1868	if (false === $results) {
2590		- // SECURITY FIX: Changed to wp_safe_remote_get
2591		- $response = wp_safe_remote_get(
	1869	+ // Fetch new results from the Brave Search API
	1870	+ $response = wp_remote_get(
2592	1871	$api_url,
2593	1872	array(
2594	1873	'headers' => array(
2595	1874	'Accept' => 'application/json',
		@@ -2728,10 +2007,9 @@
2728	2007	],
2729	2008	'timeout' => 10,
2730	2009	];
2731	2010
2732		- // SECURITY FIX: Changed to wp_safe_remote_get
2733		- $response = wp_safe_remote_get($api_url, $args);
	2011	+ $response = wp_remote_get($api_url, $args);
2734	2012
2735	2013	if (is_wp_error($response)) {
2736	2014	return array(
2737	2015	'text' => __("I'm sorry, I couldn't retrieve any images based on your request.", 'mxchat'),
		@@ -2801,22 +2079,17 @@
2801	2079	* @return string The refined search query
2802	2080	*/
2803	2081	public function mxchat_interpret_search_query($user_query) {
2804	2082	$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');
2805		-
	2083	+
2806	2084	// Get options and determine the selected model
2807	2085	$options = $this->options ?? get_option('mxchat_options');
2808		- $selected_model = isset($options['model']) ? $options['model'] : 'gpt-5.1-chat-latest';
2809		-
2810		- // Custom (OpenAI-compatible) provider routes by model id, not prefix.
2811		- if ($selected_model === 'custom-provider') {
2812		- return $this->interpret_query_with_custom($user_query, $system_prompt);
2813		- }
2814		-
	2086	+ $selected_model = isset($options['model']) ? $options['model'] : 'gpt-4o';
	2087	+
2815	2088	// Extract model prefix to determine the provider
2816	2089	$model_parts = explode('-', $selected_model);
2817	2090	$provider = strtolower($model_parts[0]);
2818		-
	2091	+
2819	2092	// Determine which API key to use based on the provider
2820	2093	switch ($provider) {
2821	2094	case 'gemini':
2822	2095	$api_key = isset($options['gemini_api_key']) ? sanitize_text_field($options['gemini_api_key']) : '';
		@@ -2857,60 +2130,11 @@
2857	2130	}
2858	2131	}
2859	2132
2860	2133	/**
2861		- * Interpret query against the configured Custom (OpenAI-compatible) provider.
2862		- * Uses the same base URL + auth scheme as the chat dispatcher.
2863		- */
2864		-private function interpret_query_with_custom($user_query, $system_prompt) {
2865		- $cfg = $this->mxchat_resolve_custom_provider();
2866		- if (empty($cfg['base_url'])) {
2867		- return sanitize_text_field($user_query);
2868		- }
2869		- $args = [
2870		- 'headers' => $this->mxchat_custom_provider_assoc_headers($cfg),
2871		- 'body' => wp_json_encode([
2872		- 'model' => $cfg['model'],
2873		- 'messages' => [
2874		- ['role' => 'system', 'content' => $system_prompt],
2875		- ['role' => 'user', 'content' => sanitize_text_field($user_query)],
2876		- ],
2877		- 'temperature' => 0.2,
2878		- 'max_tokens' => 20,
2879		- ]),
2880		- 'method' => 'POST',
2881		- 'timeout' => 15,
2882		- ];
2883		- $response = wp_remote_post($cfg['chat_url'], $args);
2884		- if (is_wp_error($response)) {
2885		- return sanitize_text_field($user_query);
2886		- }
2887		- $body = json_decode(wp_remote_retrieve_body($response), true);
2888		- return isset($body['choices'][0]['message']['content'])
2889		- ? sanitize_text_field(trim($body['choices'][0]['message']['content']))
2890		- : sanitize_text_field($user_query);
2891		-}
2892		-
2893		-/**
2894		- * Convert the colon-style header list returned by mxchat_resolve_custom_provider
2895		- * into the assoc-array form wp_remote_post expects.
2896		- */
2897		-private function mxchat_custom_provider_assoc_headers($cfg) {
2898		- $headers = ['Content-Type' => 'application/json'];
2899		- if (!empty($cfg['api_key'])) {
2900		- if (($cfg['auth_scheme'] ?? 'bearer') === 'api-key') {
2901		- $headers['api-key'] = $cfg['api_key'];
2902		- } else {
2903		- $headers['Authorization'] = 'Bearer ' . $cfg['api_key'];
2904		- }
2905		- }
2906		- return $headers;
2907		-}
2908		-
2909		-/**
2910	2134	* Interpret query using OpenAI models
2911	2135	*/
2912		-private function interpret_query_with_openai($user_query, $system_prompt, $api_key, $model = 'gpt-5.1-chat-latest') {
	2136	+private function interpret_query_with_openai($user_query, $system_prompt, $api_key, $model = 'gpt-4o') {
2913	2137	$url = 'https://api.openai.com/v1/chat/completions';
2914	2138	$args = [
2915	2139	'headers' => [
2916	2140	'Authorization' => 'Bearer ' . $api_key,
		@@ -2981,13 +2205,13 @@
2981	2205	/**
2982	2206	* Interpret query using Gemini models
2983	2207	*/
2984	2208	private function interpret_query_with_gemini($user_query, $system_prompt, $api_key, $model) {
2985		- // Use v1beta for preview models, v1 for stable models
2986		- $api_version = (strpos($model, 'preview') !== false || strpos($model, 'exp') !== false) ? 'v1beta' : 'v1';
2987		-
2988		- $url = "https://generativelanguage.googleapis.com/{$api_version}/models/{$model}:generateContent?key=" . urlencode($api_key);
	2209	+ // Strip "gemini-" prefix for the API
	2210	+ $model_version = str_replace('gemini-', '', $model);
2989	2211
	2212	+ $url = "https://generativelanguage.googleapis.com/v1/models/$model_version:generateContent?key=" . urlencode($api_key);
	2213	+
2990	2214	$args = [
2991	2215	'headers' => [
2992	2216	'Content-Type' => 'application/json',
2993	2217	],
		@@ -3183,9 +2407,9 @@
3183	2407	}
3184	2408
3185	2409
3186	2410	/**
3187		- * Enhanced fetch_and_split_pdf_pages with SSRF protection
	2411	+ * Enhanced fetch_and_split_pdf_pages with detailed debugging
3188	2412	*/
3189	2413	private function fetch_and_split_pdf_pages($pdf_source, $max_pages) {
3190	2414	// CLEAR DEBUG LOGGING
3191	2415	//error_log("=== MXCHAT PDF PROCESSING START ===");
		@@ -3240,19 +2464,10 @@
3240	2464	// (I'll include the key parts with debug logging)
3241	2465
3242	2466	if (filter_var($pdf_source, FILTER_VALIDATE_URL)) {
3243	2467	//error_log("Downloading PDF from URL...");
3244		-
3245		- // SECURITY FIX: Validate URL before processing
3246		- if (!$this->mxchat_is_safe_pdf_url($pdf_source)) {
3247		- //error_log("❌ SECURITY: Blocked unsafe PDF URL");
3248		- return false;
3249		- }
3250		-
3251	2468	$temp_file = wp_tempnam($pdf_source);
3252		-
3253		- // SECURITY FIX: Changed from wp_remote_get to wp_safe_remote_get
3254		- $response = wp_safe_remote_get($pdf_source, [
	2469	+ $response = wp_remote_get($pdf_source, [
3255	2470	'timeout' => 60,
3256	2471	'headers' => ['User-Agent' => 'MxChat PDF Processor']
3257	2472	]);
3258	2473
		@@ -3261,14 +2476,9 @@
3261	2476	//error_log("❌ BASIC PROCESSING: Failed to download PDF: " . $error_message);
3262	2477	return false;
3263	2478	}
3264	2479
3265		- global $wp_filesystem;
3266		- if (empty($wp_filesystem)) {
3267		- require_once ABSPATH . 'wp-admin/includes/file.php';
3268		- WP_Filesystem();
3269		- }
3270		- $wp_filesystem->put_contents($temp_file, wp_remote_retrieve_body($response), FS_CHMOD_FILE);
	2480	+ file_put_contents($temp_file, wp_remote_retrieve_body($response));
3271	2481	//error_log("✅ PDF downloaded successfully");
3272	2482	} else {
3273	2483	$temp_file = $pdf_source;
3274	2484	//error_log("Using local PDF file: " . $temp_file);
		@@ -3275,9 +2485,8 @@
3275	2485	}
3276	2486
3277	2487	// Parse PDF
3278	2488	//error_log("Parsing PDF with basic parser...");
3279		- mxchat_load_pdf_parser();
3280	2489	$parser = new \Smalot\PdfParser\Parser();
3281	2490	$pdf = $parser->parseFile($temp_file);
3282	2491	$pages = $pdf->getPages();
3283	2492
		@@ -3340,33 +2549,8 @@
3340	2549	return false;
3341	2550	}
3342	2551	}
3343	2552
3344		-
3345		-/**
3346		- * Validate PDF URL for security
3347		- * Prevents SSRF attacks by blocking dangerous URLs
3348		- */
3349		-
3350		-private function mxchat_is_safe_pdf_url($url) {
3351		- // Use WordPress core function for comprehensive validation
3352		- // This blocks localhost, private IPs, and reserved IP ranges
3353		- $validated_url = wp_http_validate_url($url);
3354		-
3355		- if ($validated_url === false) {
3356		- return false;
3357		- }
3358		-
3359		- // Additional check: only allow HTTP/HTTPS schemes
3360		- $parsed = parse_url($url);
3361		- if (!isset($parsed['scheme']) || !in_array($parsed['scheme'], ['http', 'https'], true)) {
3362		- return false;
3363		- }
3364		-
3365		- return true;
3366		-}
3367		-
3368		-
3369	2553	private function mxchat_clean_text($text) {
3370	2554	// Remove excessive whitespace
3371	2555	$text = preg_replace('/\s+/', ' ', $text);
3372	2556
		@@ -3405,10 +2589,9 @@
3405	2589	}
3406	2590
3407	2591	return [];
3408	2592	}
3409		-
3410		-
	2593	+// Add this to your class
3411	2594	public function handle_pdf_upload() {
3412	2595	check_ajax_referer('mxchat_chat_nonce', 'nonce');
3413	2596
3414	2597	if (!isset($_FILES['pdf_file']) || !isset($_POST['session_id'])) {
		@@ -3415,29 +2598,12 @@
3415	2598	wp_send_json_error(esc_html__('Missing required parameters.', 'mxchat'));
3416	2599	return;
3417	2600	}
3418	2601
3419		- // SECURITY FIX: Check if PDF uploads are enabled in settings
3420		- $options = get_option('mxchat_options', array());
3421		- $show_pdf_button = isset($options['show_pdf_upload_button']) ? $options['show_pdf_upload_button'] : 'on';
3422		-
3423		- if ($show_pdf_button !== 'on') {
3424		- wp_send_json_error(esc_html__('PDF uploads are currently disabled.', 'mxchat'));
3425		- return;
3426		- }
3427		-
3428	2602	$file = $_FILES['pdf_file'];
3429	2603	$session_id = sanitize_text_field($_POST['session_id']);
3430	2604	$original_filename = sanitize_text_field($file['name']);
3431	2605
3432		- // Update session owner if it changed (e.g. IP changed due to network switch)
3433		- $current_user_identifier = MxChat_User::mxchat_get_user_identifier();
3434		- $session_owner = get_option("mxchat_session_owner_{$session_id}");
3435		-
3436		- if (!$session_owner || $session_owner !== $current_user_identifier) {
3437		- update_option("mxchat_session_owner_{$session_id}", $current_user_identifier, 'no');
3438		- }
3439		-
3440	2606	$file_type = wp_check_filetype($file['name'], ['pdf' => 'application/pdf']);
3441	2607	if ($file_type['type'] !== 'application/pdf') {
3442	2608	wp_send_json_error(esc_html__('Invalid file type. Only PDF files are allowed.', 'mxchat'));
3443	2609	return;
		@@ -3443,12 +2609,9 @@
3443	2609	return;
3444	2610	}
3445	2611
3446	2612	$upload_dir = wp_upload_dir();
3447		-
3448		- // SECURITY FIX: Generate random filename without exposing session_id
3449		- $random_string = wp_generate_password(20, false, false); // 20 char alphanumeric string
3450		- $pdf_filename = 'mxchat_' . $random_string . '_' . time() . '.pdf';
	2613	+ $pdf_filename = 'mxchat_' . $session_id . '_' . time() . '.pdf';
3451	2614	$pdf_path = $upload_dir['path'] . '/' . $pdf_filename;
3452	2615
3453	2616	if (!move_uploaded_file($file['tmp_name'], $pdf_path)) {
3454	2617	wp_send_json_error(esc_html__('Failed to upload file.', 'mxchat'));
		@@ -3479,9 +2642,8 @@
3479	2642	return;
3480	2643	}
3481	2644
3482	2645	if (!empty($embeddings)) {
3483		- // Store the mapping between session and the random filename
3484	2646	set_transient('mxchat_pdf_url_' . $session_id, $pdf_path, HOUR_IN_SECONDS);
3485	2647	set_transient('mxchat_pdf_filename_' . $session_id, $original_filename, HOUR_IN_SECONDS);
3486	2648	set_transient('mxchat_pdf_embeddings_' . $session_id, $embeddings, HOUR_IN_SECONDS);
3487	2649	set_transient('mxchat_include_pdf_in_context_' . $session_id, true, HOUR_IN_SECONDS);
		@@ -3525,8 +2687,10 @@
3525	2687	wp_die();
3526	2688	}
3527	2689
3528	2690
	2691	+
	2692	+
3529	2693	function mxchat_fetch_new_messages() {
3530	2694	$session_id = sanitize_text_field($_POST['session_id']);
3531	2695	$last_seen_id = sanitize_text_field($_POST['last_seen_id']);
3532	2696	$persistence_enabled = $_POST['persistence_enabled'] === 'true';
		@@ -3539,31 +2703,14 @@
3539	2703	}
3540	2704
3541	2705	$history = get_option("mxchat_history_{$session_id}", []);
3542	2706
3543		- //error_log("MxChat WhatsApp DEBUG: Fetch new messages for session {$session_id}");
3544		- //error_log("MxChat WhatsApp DEBUG: last_seen_id = " . var_export($last_seen_id, true));
3545		- //error_log("MxChat WhatsApp DEBUG: History count = " . count($history));
3546		- //error_log("MxChat WhatsApp DEBUG: Full history = " . print_r($history, true));
3547		-
3548	2707	$new_messages = array_filter($history, function ($message) use ($last_seen_id, $persistence_enabled, $initial_timestamp) {
3549		- //error_log("MxChat WhatsApp DEBUG: Checking message - ID: " . ($message['id'] ?? 'NO_ID') . ", Role: " . ($message['role'] ?? 'NO_ROLE'));
3550		-
3551	2708	// If persistence is enabled, show all new messages
3552	2709	if ($persistence_enabled) {
3553		- $has_id = !empty($message['id']);
3554		- $is_agent = $message['role'] === 'agent';
3555		-
3556		- // If last_seen_id is empty, 'NaN', or invalid, show all agent messages
3557		- if (empty($last_seen_id) || $last_seen_id === 'NaN' || $last_seen_id === 'undefined') {
3558		- $is_newer = true;
3559		- } else {
3560		- $is_newer = strcmp($message['id'] ?? '', $last_seen_id) > 0;
3561		- }
3562		-
3563		- //error_log("MxChat WhatsApp DEBUG: has_id={$has_id}, is_newer={$is_newer}, is_agent={$is_agent}");
3564		-
3565		- return $has_id && $is_newer && $is_agent;
	2710	+ return !empty($message['id']) &&
	2711	+ strcmp($message['id'], $last_seen_id) > 0 &&
	2712	+ $message['role'] === 'agent';
3566	2713	}
3567	2714
3568	2715	// If persistence is disabled, only show messages after initial timestamp
3569	2716	return !empty($message['id']) &&
		@@ -3570,16 +2717,12 @@
3570	2717	$message['role'] === 'agent' &&
3571	2718	$message['timestamp'] > $initial_timestamp;
3572	2719	});
3573	2720
3574		- //error_log("MxChat WhatsApp DEBUG: Filtered messages count = " . count($new_messages));
	2721	+ //error_log(esc_html__("New agent messages fetched for session $session_id. Last seen ID: $last_seen_id", 'mxchat'));
3575	2722
3576		- // Include current chat mode so frontend can detect agent→AI transitions
3577		- $chat_mode = get_option("mxchat_mode_{$session_id}", 'ai');
3578		-
3579	2723	wp_send_json_success([
3580		- 'new_messages' => array_values($new_messages),
3581		- 'chat_mode' => $chat_mode
	2724	+ 'new_messages' => array_values($new_messages)
3582	2725	]);
3583	2726	wp_die();
3584	2727	}
3585	2728	public function mxchat_live_agent_handover($message, $user_id, $session_id) {
		@@ -3864,393 +3007,9 @@
3864	3007
3865	3008	//error_log("[DEBUG] Generated channel name: {$channel_name}");
3866	3009	return $channel_name;
3867	3010	}
3868		-
3869		-/**
3870		- * Telegram Live Agent Handover
3871		- * Creates a forum topic in the Telegram group and notifies agents
3872		- */
3873		-public function mxchat_telegram_live_agent_handover($message, $user_id, $session_id) {
3874		- // Check if Telegram agents are available
3875		- $telegram_available = $this->options['telegram_status'] ?? 'off';
3876		- if ($telegram_available !== 'on') {
3877		- $away_message = $this->options['telegram_away_message'] ?? 'Sorry, live agents are currently unavailable. I can continue helping you as an AI assistant.';
3878		- $this->fallbackResponse = [
3879		- 'text' => $away_message,
3880		- 'html' => '',
3881		- 'images' => [],
3882		- 'chat_mode' => 'ai'
3883		- ];
3884		- wp_send_json([
3885		- 'text' => $away_message,
3886		- 'html' => '',
3887		- 'chat_mode' => 'ai',
3888		- 'session_id' => $session_id
3889		- ]);
3890		- wp_die();
3891		- }
3892		-
3893		- $telegram_bot_token = $this->options['telegram_bot_token'] ?? '';
3894		- $telegram_group_id = $this->options['telegram_group_id'] ?? '';
3895		-
3896		- if (empty($telegram_bot_token) || empty($telegram_group_id)) {
3897		- return false;
3898		- }
3899		-
3900		- // Check if topic already exists for this session
3901		- $topic_id = get_option("mxchat_telegram_topic_{$session_id}", '');
3902		-
3903		- if (empty($topic_id)) {
3904		- // Generate topic name
3905		- $topic_name = $this->generate_telegram_topic_name($session_id);
3906		-
3907		- // Random icon color (Telegram forum topic colors)
3908		- $icon_colors = [0x6FB9F0, 0xFFD67E, 0xCB86DB, 0x8EEE98, 0xFF93B2, 0xFB6F5F];
3909		- $icon_color = $icon_colors[array_rand($icon_colors)];
3910		-
3911		- // Create forum topic
3912		- $response = wp_remote_post("https://api.telegram.org/bot{$telegram_bot_token}/createForumTopic", [
3913		- 'headers' => ['Content-Type' => 'application/json'],
3914		- 'body' => json_encode([
3915		- 'chat_id' => $telegram_group_id,
3916		- 'name' => $topic_name,
3917		- 'icon_color' => $icon_color
3918		- ])
3919		- ]);
3920		-
3921		- if (!is_wp_error($response)) {
3922		- $response_body = wp_remote_retrieve_body($response);
3923		- $response_data = json_decode($response_body, true);
3924		-
3925		- if (isset($response_data['ok']) && $response_data['ok']) {
3926		- $topic_id = $response_data['result']['message_thread_id'];
3927		- update_option("mxchat_telegram_topic_{$session_id}", $topic_id);
3928		- update_option("mxchat_telegram_group_{$session_id}", $telegram_group_id);
3929		- }
3930		- }
3931		-
3932		- if (empty($topic_id)) {
3933		- return false; // Failed to create topic
3934		- }
3935		- }
3936		-
3937		- // Get recent chat history
3938		- $history = get_option("mxchat_history_{$session_id}", []);
3939		- $recent_history = array_slice($history, -5);
3940		-
3941		- // Format conversation context for Telegram (HTML format)
3942		- $conversation_context = "";
3943		- if (!empty($recent_history)) {
3944		- $conversation_context = "<b>Recent Conversation:</b>\n";
3945		- foreach ($recent_history as $hist_message) {
3946		- $role_display = $hist_message['role'] === 'user' ? '👤 User' : '🤖 AI';
3947		- $escaped_content = htmlspecialchars($hist_message['content'], ENT_QUOTES, 'UTF-8');
3948		- $conversation_context .= "{$role_display}: {$escaped_content}\n";
3949		- }
3950		- $conversation_context .= "\n";
3951		- }
3952		-
3953		- // Get user info
3954		- $user_email = get_option("mxchat_email_{$session_id}", 'Not provided');
3955		- $user_name = get_option("mxchat_name_{$session_id}", 'Anonymous');
3956		-
3957		- // Update session mode
3958		- update_option("mxchat_mode_{$session_id}", 'agent');
3959		-
3960		- // Send initial message to topic
3961		- $escaped_message = htmlspecialchars($message, ENT_QUOTES, 'UTF-8');
3962		- $topic_message = "🔔 <b>New Live Agent Request</b>\n\n";
3963		- $topic_message .= "<b>Session ID:</b> <code>{$session_id}</code>\n";
3964		- $topic_message .= "<b>User:</b> {$user_name}\n";
3965		- $topic_message .= "<b>Email:</b> {$user_email}\n\n";
3966		-
3967		- if (!empty($conversation_context)) {
3968		- $topic_message .= $conversation_context;
3969		- }
3970		-
3971		- $topic_message .= "<b>Current Message:</b>\n{$escaped_message}\n\n";
3972		- $topic_message .= "<i>Reply in this topic - messages will be sent to the user</i>\n";
3973		- $topic_message .= "<i>Type #close, #end, #disconnect, or #done to end the session</i>";
3974		-
3975		- wp_remote_post("https://api.telegram.org/bot{$telegram_bot_token}/sendMessage", [
3976		- 'headers' => ['Content-Type' => 'application/json'],
3977		- 'body' => json_encode([
3978		- 'chat_id' => $telegram_group_id,
3979		- 'message_thread_id' => $topic_id,
3980		- 'text' => $topic_message,
3981		- 'parse_mode' => 'HTML'
3982		- ])
3983		- ]);
3984		-
3985		- $success_message = $this->options['telegram_notification_message'] ?? "I've notified a support agent. Please allow a moment for them to respond.";
3986		- $this->mxchat_save_chat_message($session_id, 'bot', $success_message);
3987		-
3988		- $this->fallbackResponse = [
3989		- 'text' => $success_message,
3990		- 'html' => '',
3991		- 'images' => [],
3992		- 'chat_mode' => 'agent'
3993		- ];
3994		-
3995		- wp_send_json([
3996		- 'success' => true,
3997		- 'text' => $success_message,
3998		- 'html' => '',
3999		- 'chat_mode' => 'agent',
4000		- 'session_id' => $session_id,
4001		- 'fallbackResponse' => $this->fallbackResponse
4002		- ]);
4003		- wp_die();
4004		-}
4005		-
4006		-/**
4007		- * Generate topic name for Telegram forum
4008		- */
4009		-private function generate_telegram_topic_name($session_id) {
4010		- $name = null;
4011		- $email = null;
4012		-
4013		- // Check logged in user
4014		- if (is_user_logged_in()) {
4015		- $current_user = wp_get_current_user();
4016		- if (!empty($current_user->display_name)) {
4017		- $name = $current_user->display_name;
4018		- }
4019		- if (!empty($current_user->user_email)) {
4020		- $email = $current_user->user_email;
4021		- }
4022		- }
4023		-
4024		- // Check session data
4025		- if (empty($name)) {
4026		- $name = get_option("mxchat_name_{$session_id}");
4027		- }
4028		- if (empty($email)) {
4029		- $email = get_option("mxchat_email_{$session_id}");
4030		- }
4031		-
4032		- // Generate topic name
4033		- $session_suffix = substr($session_id, -6);
4034		-
4035		- if (!empty($name)) {
4036		- // Clean name for topic (max 128 chars in Telegram)
4037		- $clean_name = preg_replace('/[^\p{L}\p{N}\s\-]/u', '', $name);
4038		- $clean_name = trim($clean_name);
4039		- if (strlen($clean_name) > 50) {
4040		- $clean_name = substr($clean_name, 0, 50);
4041		- }
4042		- return "Chat - {$clean_name} ({$session_suffix})";
4043		- } elseif (!empty($email)) {
4044		- // Use email prefix
4045		- $email_prefix = explode('@', $email)[0];
4046		- if (strlen($email_prefix) > 30) {
4047		- $email_prefix = substr($email_prefix, 0, 30);
4048		- }
4049		- return "Chat - {$email_prefix} ({$session_suffix})";
4050		- }
4051		-
4052		- return "Chat - {$session_suffix}";
4053		-}
4054		-
4055		-/**
4056		- * Send user message to Telegram agent
4057		- */
4058		-public function mxchat_send_user_message_to_telegram_agent($message, $user_id, $session_id) {
4059		- $telegram_bot_token = $this->options['telegram_bot_token'] ?? '';
4060		- $topic_id = get_option("mxchat_telegram_topic_{$session_id}", '');
4061		- $group_id = get_option("mxchat_telegram_group_{$session_id}", '');
4062		-
4063		- if (empty($telegram_bot_token) || empty($topic_id) || empty($group_id)) {
4064		- return false;
4065		- }
4066		-
4067		- $escaped_message = htmlspecialchars($message, ENT_QUOTES, 'UTF-8');
4068		- $user_message = "👤 <b>User:</b> {$escaped_message}";
4069		-
4070		- $response = wp_remote_post("https://api.telegram.org/bot{$telegram_bot_token}/sendMessage", [
4071		- 'headers' => ['Content-Type' => 'application/json'],
4072		- 'body' => json_encode([
4073		- 'chat_id' => $group_id,
4074		- 'message_thread_id' => $topic_id,
4075		- 'text' => $user_message,
4076		- 'parse_mode' => 'HTML'
4077		- ])
4078		- ]);
4079		-
4080		- return !is_wp_error($response);
4081		-}
4082		-
4083		-/**
4084		- * Handle incoming Telegram webhook
4085		- */
4086		-public function handle_telegram_webhook(WP_REST_Request $request) {
4087		- $body = $request->get_body();
4088		- $data = json_decode($body, true);
4089		-
4090		- //error_log('[MxChat Telegram DEBUG] Webhook received: ' . $body);
4091		-
4092		- // Handle message events from forum topics
4093		- if (isset($data['message'])) {
4094		- $message_data = $data['message'];
4095		-
4096		- // Skip if not from a forum topic
4097		- if (!isset($message_data['message_thread_id'])) {
4098		- //error_log('[MxChat Telegram DEBUG] Skipped: No message_thread_id (not a forum topic message)');
4099		- return new WP_REST_Response(['ok' => true]);
4100		- }
4101		-
4102		- // Skip bot messages
4103		- if (isset($message_data['from']['is_bot']) && $message_data['from']['is_bot']) {
4104		- //error_log('[MxChat Telegram DEBUG] Skipped: Message from bot');
4105		- return new WP_REST_Response(['ok' => true]);
4106		- }
4107		-
4108		- $chat_id = $message_data['chat']['id'] ?? '';
4109		- $topic_id = $message_data['message_thread_id'];
4110		- $message_text = $message_data['text'] ?? '';
4111		- $message_id = $message_data['message_id'] ?? '';
4112		- $from = $message_data['from'] ?? [];
4113		- $agent_name = trim(($from['first_name'] ?? '') . ' ' . ($from['last_name'] ?? ''));
4114		- if (empty($agent_name)) {
4115		- $agent_name = $from['username'] ?? 'Agent';
4116		- }
4117		-
4118		- //error_log("[MxChat Telegram DEBUG] Parsed: chat_id={$chat_id}, topic_id={$topic_id}, agent={$agent_name}, text={$message_text}");
4119		-
4120		- // Skip empty messages
4121		- if (empty($message_text)) {
4122		- //error_log('[MxChat Telegram DEBUG] Skipped: Empty message text');
4123		- return new WP_REST_Response(['ok' => true]);
4124		- }
4125		-
4126		- // Find session ID by topic ID - cast to string for comparison
4127		- global $wpdb;
4128		- $topic_id_str = strval($topic_id);
4129		- $session_option = $wpdb->get_var(
4130		- $wpdb->prepare(
4131		- "SELECT option_name FROM {$wpdb->options}
4132		- WHERE option_name LIKE %s
4133		- AND option_value = %s",
4134		- 'mxchat_telegram_topic_%',
4135		- $topic_id_str
4136		- )
4137		- );
4138		-
4139		- //error_log("[MxChat Telegram DEBUG] Looking for topic_id={$topic_id_str} in options, found: " . ($session_option ?: 'NULL'));
4140		-
4141		- if ($session_option) {
4142		- $session_id = str_replace('mxchat_telegram_topic_', '', $session_option);
4143		- //error_log("[MxChat Telegram DEBUG] Session ID: {$session_id}");
4144		-
4145		- // Verify the group ID matches
4146		- $stored_group_id = get_option("mxchat_telegram_group_{$session_id}", '');
4147		- //error_log("[MxChat Telegram DEBUG] Stored group_id={$stored_group_id}, received chat_id={$chat_id}");
4148		-
4149		- if (strval($stored_group_id) != strval($chat_id)) {
4150		- //error_log('[MxChat Telegram DEBUG] Skipped: Group ID mismatch');
4151		- return new WP_REST_Response(['ok' => true]);
4152		- }
4153		-
4154		- // Check for closure commands
4155		- $lower_text = strtolower(trim($message_text));
4156		- if (in_array($lower_text, ['#close', '#end', '#disconnect', '#done'])) {
4157		- //error_log("[MxChat Telegram DEBUG] Closure command received: {$lower_text}");
4158		- // End the live agent session
4159		- update_option("mxchat_mode_{$session_id}", 'ai');
4160		-
4161		- // Save disconnect message
4162		- $disconnect_message = "Live agent session ended. You're now chatting with the AI assistant.";
4163		- $this->mxchat_save_chat_message($session_id, 'bot', $disconnect_message);
4164		-
4165		- // Notify in Telegram
4166		- $telegram_bot_token = $this->options['telegram_bot_token'] ?? '';
4167		- if (!empty($telegram_bot_token)) {
4168		- wp_remote_post("https://api.telegram.org/bot{$telegram_bot_token}/sendMessage", [
4169		- 'headers' => ['Content-Type' => 'application/json'],
4170		- 'body' => json_encode([
4171		- 'chat_id' => $chat_id,
4172		- 'message_thread_id' => $topic_id,
4173		- 'text' => "✅ Session closed. User returned to AI chatbot.",
4174		- 'parse_mode' => 'HTML'
4175		- ])
4176		- ]);
4177		-
4178		- // Optionally close the topic
4179		- wp_remote_post("https://api.telegram.org/bot{$telegram_bot_token}/closeForumTopic", [
4180		- 'headers' => ['Content-Type' => 'application/json'],
4181		- 'body' => json_encode([
4182		- 'chat_id' => $chat_id,
4183		- 'message_thread_id' => $topic_id
4184		- ])
4185		- ]);
4186		- }
4187		-
4188		- return new WP_REST_Response(['ok' => true]);
4189		- }
4190		-
4191		- // Deduplicate messages
4192		- $message_key = md5($session_id . $message_id . $message_text);
4193		- $processed_messages = get_transient('mxchat_telegram_messages_' . $session_id) ?: [];
4194		-
4195		- if (in_array($message_key, $processed_messages)) {
4196		- //error_log('[MxChat Telegram DEBUG] Skipped: Duplicate message');
4197		- return new WP_REST_Response(['ok' => true]);
4198		- }
4199		-
4200		- $processed_messages[] = $message_key;
4201		- if (count($processed_messages) > 50) {
4202		- $processed_messages = array_slice($processed_messages, -50);
4203		- }
4204		- set_transient('mxchat_telegram_messages_' . $session_id, $processed_messages, HOUR_IN_SECONDS);
4205		-
4206		- // Save the agent message - format with agent name prefix for proper parsing
4207		- $formatted_message = "Agent: {$agent_name} - {$message_text}";
4208		- //error_log("[MxChat Telegram DEBUG] Saving agent message: {$formatted_message}");
4209		-
4210		- $this->mxchat_save_chat_message($session_id, 'agent', $formatted_message);
4211		-
4212		- // Verify the message was saved to history
4213		- $history = get_option("mxchat_history_{$session_id}", []);
4214		- $last_message = end($history);
4215		- //error_log("[MxChat Telegram DEBUG] History after save - count: " . count($history) . ", last message role: " . ($last_message['role'] ?? 'none'));
4216		-
4217		- // Send confirmation back to Telegram
4218		- $telegram_bot_token = $this->options['telegram_bot_token'] ?? '';
4219		- if (!empty($telegram_bot_token)) {
4220		- $confirm_key = 'mxchat_telegram_confirm_' . $message_key;
4221		- if (!get_transient($confirm_key)) {
4222		- wp_remote_post("https://api.telegram.org/bot{$telegram_bot_token}/sendMessage", [
4223		- 'headers' => ['Content-Type' => 'application/json'],
4224		- 'body' => json_encode([
4225		- 'chat_id' => $chat_id,
4226		- 'message_thread_id' => $topic_id,
4227		- 'text' => "✅ <i>Message sent to user</i>",
4228		- 'parse_mode' => 'HTML',
4229		- 'reply_to_message_id' => $message_id
4230		- ])
4231		- ]);
4232		- set_transient($confirm_key, true, 300);
4233		- }
4234		- }
4235		- } else {
4236		- //error_log("[MxChat Telegram DEBUG] No session found for topic_id={$topic_id}");
4237		- }
4238		- } else {
4239		- //error_log('[MxChat Telegram DEBUG] No message in webhook data');
4240		- }
4241		-
4242		- return new WP_REST_Response(['ok' => true]);
4243		-}
4244		-
4245	3011	public function mxchat_send_user_message_to_agent($message, $user_id, $session_id) {
4246		- // Check if this is a Telegram agent session
4247		- $telegram_topic_id = get_option("mxchat_telegram_topic_{$session_id}", '');
4248		- if (!empty($telegram_topic_id)) {
4249		- return $this->mxchat_send_user_message_to_telegram_agent($message, $user_id, $session_id);
4250		- }
4251		-
4252		- // Otherwise, try Slack
4253	3012	$slack_bot_token = $this->options['live_agent_bot_token'] ?? '';
4254	3013	$channel_id = get_option("mxchat_channel_{$session_id}", '');
4255	3014
4256	3015	if (empty($slack_bot_token) || empty($channel_id)) {
		@@ -4476,33 +3235,33 @@
4476	3235
4477	3236	$channel_id = $event['channel'];
4478	3237	$message_text = $event['text'] ?? '';
4479	3238	$message_ts = $event['ts'] ?? '';
4480		-
	3239	+
4481	3240	// Find session ID by looking for matching channel
4482	3241	global $wpdb;
4483	3242	$session_option = $wpdb->get_var(
4484	3243	$wpdb->prepare(
4485		- "SELECT option_name FROM {$wpdb->options}
4486		- WHERE option_name LIKE 'mxchat_channel_%'
	3244	+ "SELECT option_name FROM {$wpdb->options}
	3245	+ WHERE option_name LIKE 'mxchat_channel_%'
4487	3246	AND option_value = %s",
4488	3247	$channel_id
4489	3248	)
4490	3249	);
4491		-
	3250	+
4492	3251	if ($session_option) {
4493	3252	$session_id = str_replace('mxchat_channel_', '', $session_option);
4494		-
	3253	+
4495	3254	// Create a unique key for this specific message
4496	3255	$message_key = md5($session_id . $message_ts . $message_text);
4497	3256	$processed_messages = get_transient('mxchat_processed_messages_' . $session_id) ?: [];
4498		-
	3257	+
4499	3258	// Check if we've already processed this exact message
4500	3259	if (in_array($message_key, $processed_messages)) {
4501	3260	//error_log("Duplicate message detected for session $session_id");
4502	3261	return new WP_REST_Response(['ok' => true]);
4503	3262	}
4504		-
	3263	+
4505	3264	// Add to processed messages
4506	3265	$processed_messages[] = $message_key;
4507	3266	// Keep only last 50 messages per session
4508	3267	if (count($processed_messages) > 50) {
		@@ -4508,46 +3267,14 @@
4508	3267	if (count($processed_messages) > 50) {
4509	3268	$processed_messages = array_slice($processed_messages, -50);
4510	3269	}
4511	3270	set_transient('mxchat_processed_messages_' . $session_id, $processed_messages, HOUR_IN_SECONDS);
4512		-
4513		- $slack_bot_token = $this->options['live_agent_bot_token'] ?? '';
4514		-
4515		- // Handle agent ending the chat — transfer back to AI
4516		- // Format: "!endchat" or "!endchat <custom message to user>"
4517		- if (preg_match('/^!endchat\b/i', trim($message_text))) {
4518		- update_option("mxchat_mode_{$session_id}", 'ai');
4519		-
4520		- // Extract custom message after !endchat, or use empty string
4521		- $custom_message = trim(preg_replace('/^!endchat\s*/i', '', trim($message_text)));
4522		-
4523		- // Send the agent's custom farewell message if provided
4524		- if (!empty($custom_message)) {
4525		- $this->mxchat_save_chat_message($session_id, 'agent', $custom_message);
4526		- }
4527		-
4528		- // Confirm in Slack channel
4529		- if (!empty($slack_bot_token)) {
4530		- wp_remote_post('https://slack.com/api/chat.postMessage', [
4531		- 'headers' => [
4532		- 'Content-Type' => 'application/json',
4533		- 'Authorization' => 'Bearer ' . $slack_bot_token
4534		- ],
4535		- 'body' => json_encode([
4536		- 'channel' => $channel_id,
4537		- 'text' => "✅ *Chat ended.* User has been transferred back to AI mode.",
4538		- 'mrkdwn' => true
4539		- ])
4540		- ]);
4541		- }
4542		-
4543		- return new WP_REST_Response(['ok' => true]);
4544		- }
4545		-
	3271	+
4546	3272	// Save the agent message
4547	3273	$this->mxchat_save_chat_message($session_id, 'agent', $message_text);
4548		-
	3274	+
4549	3275	// Send confirmation back to Slack (only once)
	3276	+ $slack_bot_token = $this->options['live_agent_bot_token'] ?? '';
4550	3277	if (!empty($slack_bot_token)) {
4551	3278	// Use a transient to prevent duplicate confirmations
4552	3279	$confirm_key = 'mxchat_confirm_' . $message_key;
4553	3280	if (!get_transient($confirm_key)) {
		@@ -4557,9 +3284,9 @@
4557	3284	'Authorization' => 'Bearer ' . $slack_bot_token
4558	3285	],
4559	3286	'body' => json_encode([
4560	3287	'channel' => $channel_id,
4561		- 'text' => "✅ _Message sent to user_",
	3288	+ 'text' => "✅ _Message sent to user_",
4562	3289	'thread_ts' => $event['ts'] // Reply in thread
4563	3290	])
4564	3291	]);
4565	3292	// Set transient to prevent duplicate confirmations
		@@ -4599,15 +3326,9 @@
4599	3326	try {
4600	3327	// Get options and selected model
4601	3328	$options = get_option('mxchat_options');
4602	3329	$selected_model = $options['embedding_model'] ?? 'text-embedding-ada-002';
4603		-
4604		- // Opt-in: route embeddings through the Custom (OpenAI-compatible) provider.
4605		- // Off by default so existing sites see byte-identical behavior.
4606		- if (!empty($options['custom_provider_for_embeddings']) && $options['custom_provider_for_embeddings'] === 'on') {
4607		- return $this->mxchat_generate_embedding_custom($text);
4608		- }
4609		-
	3330	+
4610	3331	// Determine endpoint and API key based on model
4611	3332	if (strpos($selected_model, 'voyage') === 0) {
4612	3333	$endpoint = 'https://api.voyageai.com/v1/embeddings';
4613	3334	$api_key = $options['voyage_api_key'] ?? '';
		@@ -4804,97 +3525,26 @@
4804	3525	}
4805	3526	}
4806	3527
4807	3528
4808		-/**
4809		- * Generate embedding via a Custom (OpenAI-compatible) provider's /embeddings route.
4810		- * Only called when the opt-in 'custom_provider_for_embeddings' setting is on.
4811		- * Returns a numeric array (the embedding vector) on success, or ['error','error_code'] on failure.
4812		- */
4813		-private function mxchat_generate_embedding_custom($text) {
4814		- if (empty($text)) {
4815		- return ['error' => esc_html__('No text provided for embedding generation', 'mxchat'), 'error_code' => 'empty_embedding_text'];
4816		- }
4817		- $cfg = $this->mxchat_resolve_custom_provider();
4818		- if (empty($cfg['base_url'])) {
4819		- return ['error' => esc_html__('Custom provider Base URL is not configured.', 'mxchat'), 'error_code' => 'missing_custom_provider_base_url'];
4820		- }
4821		-
4822		- $options = get_option('mxchat_options');
4823		- $embed_url = $cfg['base_url'] . '/embeddings';
4824		- if (!empty($cfg['api_version'])) {
4825		- $embed_url .= (strpos($embed_url, '?') === false ? '?' : '&') . 'api-version=' . rawurlencode($cfg['api_version']);
4826		- }
4827		- $model = isset($options['custom_provider_embedding_model']) && trim((string) $options['custom_provider_embedding_model']) !== ''
4828		- ? trim((string) $options['custom_provider_embedding_model'])
4829		- : $cfg['model'];
4830		-
4831		- $response = wp_remote_post($embed_url, [
4832		- 'headers' => $this->mxchat_custom_provider_assoc_headers($cfg),
4833		- 'body' => wp_json_encode(['input' => $text, 'model' => $model]),
4834		- 'timeout' => 60,
4835		- ]);
4836		- if (is_wp_error($response)) {
4837		- return [
4838		- 'error' => esc_html__('Connection error when generating embeddings (custom provider): ', 'mxchat') . esc_html($response->get_error_message()),
4839		- 'error_code' => 'embedding_custom_connection_error',
4840		- ];
4841		- }
4842		- $status = wp_remote_retrieve_response_code($response);
4843		- $body = json_decode(wp_remote_retrieve_body($response), true);
4844		- if ($status !== 200) {
4845		- $msg = isset($body['error']['message']) ? $body['error']['message'] : 'HTTP ' . $status;
4846		- return [
4847		- 'error' => esc_html__('Custom embedding endpoint error: ', 'mxchat') . esc_html($msg),
4848		- 'error_code' => 'embedding_custom_api_error',
4849		- 'status_code' => $status,
4850		- ];
4851		- }
4852		- if (isset($body['data'][0]['embedding']) && is_array($body['data'][0]['embedding'])) {
4853		- return $body['data'][0]['embedding'];
4854		- }
4855		- return [
4856		- 'error' => esc_html__('Invalid embedding response from custom provider.', 'mxchat'),
4857		- 'error_code' => 'embedding_custom_invalid_response',
4858		- ];
4859		-}
4860		-
4861		-private function mxchat_find_relevant_content($user_embedding, $bot_id = 'default', $user_query = '') {
4862		- //error_log("MXCHAT DEBUG: find_relevant_content called with bot_id: " . $bot_id);
4863		-
4864		- // Check for OpenAI Vector Store first (takes priority when enabled)
4865		- $bot_vectorstore_config = $this->get_bot_vectorstore_config($bot_id);
4866		-
4867		- if ($bot_vectorstore_config['use_vectorstore']) {
4868		- // Get current model to verify it's an OpenAI model
4869		- $bot_options = $this->get_bot_options($bot_id);
4870		- $mxchat_options = get_option('mxchat_options', array());
4871		- $current_options = !empty($bot_options) ? $bot_options : $mxchat_options;
4872		- $selected_model = $current_options['model'] ?? 'gpt-5.1-chat-latest';
4873		-
4874		- if ($this->is_openai_chat_model($selected_model)) {
4875		- //error_log("MXCHAT DEBUG: Using OpenAI Vector Store for knowledge retrieval");
4876		- return $this->find_relevant_content_openai_vectorstore($user_query, $bot_id, $bot_vectorstore_config);
4877		- } else {
4878		- //error_log("MXCHAT DEBUG: Vector Store enabled but model is not OpenAI (" . $selected_model . "), skipping Vector Store");
4879		- }
4880		- }
4881		-
	3529	+private function mxchat_find_relevant_content($user_embedding, $bot_id = 'default') {
	3530	+ error_log("MXCHAT DEBUG: find_relevant_content called with bot_id: " . $bot_id);
	3531	+
4882	3532	// Get bot-specific Pinecone configuration
4883	3533	$bot_pinecone_config = $this->get_bot_pinecone_config($bot_id);
4884		-
	3534	+
4885	3535	// Debug: Log the Pinecone configuration
4886		- //error_log("MXCHAT DEBUG: Pinecone config for bot '$bot_id':");
4887		- //error_log(" - use_pinecone: " . ($bot_pinecone_config['use_pinecone'] ? 'true' : 'false'));
4888		- //error_log(" - api_key: " . (empty($bot_pinecone_config['api_key']) ? 'EMPTY' : 'SET (hidden)'));
4889		- //error_log(" - host: " . ($bot_pinecone_config['host'] ?? 'NOT SET'));
4890		- //error_log(" - namespace: " . ($bot_pinecone_config['namespace'] ?? 'NOT SET'));
4891		-
	3536	+ error_log("MXCHAT DEBUG: Pinecone config for bot '$bot_id':");
	3537	+ error_log(" - use_pinecone: " . ($bot_pinecone_config['use_pinecone'] ? 'true' : 'false'));
	3538	+ error_log(" - api_key: " . (empty($bot_pinecone_config['api_key']) ? 'EMPTY' : 'SET (hidden)'));
	3539	+ error_log(" - host: " . ($bot_pinecone_config['host'] ?? 'NOT SET'));
	3540	+ error_log(" - namespace: " . ($bot_pinecone_config['namespace'] ?? 'NOT SET'));
	3541	+
4892	3542	// Determine whether to use Pinecone based on bot configuration
4893	3543	$use_pinecone = isset($bot_pinecone_config['use_pinecone']) ? $bot_pinecone_config['use_pinecone'] : false;
	3544	+
	3545	+ error_log("MXCHAT DEBUG: Using " . ($use_pinecone ? "Pinecone" : "WordPress Database") . " for knowledge retrieval");
4894	3546
4895		- //error_log("MXCHAT DEBUG: Using " . ($use_pinecone ? "Pinecone" : "WordPress Database") . " for knowledge retrieval");
4896		-
4897	3547	if ($use_pinecone) {
4898	3548	return $this->find_relevant_content_pinecone($user_embedding, $bot_id, $bot_pinecone_config);
4899	3549	} else {
4900	3550	return $this->find_relevant_content_wordpress($user_embedding, $bot_id);
		@@ -4903,483 +3553,233 @@
4903	3553
4904	3554	private function find_relevant_content_wordpress($user_embedding, $bot_id = 'default') {
4905	3555	global $wpdb;
4906	3556	$system_prompt_table = $wpdb->prefix . 'mxchat_system_prompt_content';
	3557	+ $cache_key = 'mxchat_system_prompt_embeddings_' . $bot_id; // Bot-specific cache key
	3558	+ $batch_size = 500;
	3559	+
4907	3560	// Initialize similarity analysis storage
4908	3561	$this->last_similarity_analysis = [
4909	3562	'knowledge_base_type' => 'WordPress Database',
4910		- 'bot_id' => $bot_id,
	3563	+ 'bot_id' => $bot_id, // Track which bot is being used
4911	3564	'top_matches' => [],
4912	3565	'threshold_used' => 0,
4913	3566	'total_checked' => 0
4914	3567	];
4915	3568
4916		- // NEW: Initialize valid URLs array
4917		- $valid_urls = [];
4918		-
4919		- // Get bot-specific options for similarity threshold
	3569	+ // Get bot-specific options for similarity threshold
4920	3570	$bot_options = $this->get_bot_options($bot_id);
4921	3571	$current_options = !empty($bot_options) ? $bot_options : $this->options;
4922	3572
4923		- // Get knowledge manager instance for role checking
4924		- $knowledge_manager = MxChat_Knowledge_Manager::get_instance();
	3573	+ // Retrieve embeddings from cache or database
	3574	+ $embeddings = wp_cache_get($cache_key, 'mxchat_system_prompts');
	3575	+ if ($embeddings === false) {
	3576	+ // Cache miss - load embeddings from database WITH CONTENT and ROLE RESTRICTION for testing
	3577	+ $embeddings = [];
	3578	+ $offset = 0;
4925	3579
4926		- // Get base similarity threshold from bot options or default options
4927		- $similarity_threshold = isset($current_options['similarity_threshold'])
4928		- ? ((int) $current_options['similarity_threshold']) / 100
4929		- : 0.35;
4930		- $this->last_similarity_analysis['threshold_used'] = $similarity_threshold;
	3580	+ do {
	3581	+ // Add bot_id filter if not default and if bot_metadata column exists
	3582	+ $bot_filter = '';
	3583	+ if ($bot_id !== 'default') {
	3584	+ // Check if bot_metadata column exists
	3585	+ $column_exists = $wpdb->get_var("SHOW COLUMNS FROM {$system_prompt_table} LIKE 'bot_metadata'");
	3586	+ if ($column_exists) {
	3587	+ $bot_filter = $wpdb->prepare(" AND (bot_metadata = %s OR bot_metadata IS NULL OR bot_metadata = '')", $bot_id);
	3588	+ }
	3589	+ }
4931	3590
4932		- // Precompute bot_filter once, outside the streaming loop
4933		- $bot_filter = '';
4934		- if ($bot_id !== 'default') {
4935		- $column_exists = $wpdb->get_var("SHOW COLUMNS FROM {$system_prompt_table} LIKE 'bot_metadata'");
4936		- if ($column_exists) {
4937		- $bot_filter = $wpdb->prepare(" AND (bot_metadata = %s OR bot_metadata IS NULL OR bot_metadata = '')", $bot_id);
4938		- }
4939		- }
	3591	+ $query = $wpdb->prepare(
	3592	+ "SELECT id, embedding_vector, article_content, source_url, role_restriction
	3593	+ FROM {$system_prompt_table}
	3594	+ WHERE 1=1 {$bot_filter}
	3595	+ LIMIT %d OFFSET %d",
	3596	+ $batch_size,
	3597	+ $offset
	3598	+ );
4940	3599
4941		- // ===== STREAMING TOP-K PASS =====
4942		- // Stream rows in small batches, compute cosine similarity per row, and keep only:
4943		- // - top 10 by raw similarity (for the testing/debug display panel)
4944		- // - candidates above threshold with access (capped) for context assembly
4945		- // This bounds peak memory regardless of knowledge base size and avoids loading
4946		- // article_content for every row. article_content is fetched in Phase 2 for winners only.
4947		- $batch_size = 250;
4948		- $max_candidates = 200; // safety cap, well above rag_sources_limit * max_chunks_per_source
4949		- $top_display = [];
4950		- $candidates = [];
4951		- $total_checked = 0;
4952		- $offset = 0;
	3600	+ $batch = $wpdb->get_results($query);
	3601	+ if (empty($batch)) {
	3602	+ break;
	3603	+ }
4953	3604
4954		- do {
4955		- $batch = $wpdb->get_results($wpdb->prepare(
4956		- "SELECT id, embedding_vector, source_url, role_restriction
4957		- FROM {$system_prompt_table}
4958		- WHERE 1=1 {$bot_filter}
4959		- LIMIT %d OFFSET %d",
4960		- $batch_size,
4961		- $offset
4962		- ));
	3605	+ $embeddings = array_merge($embeddings, $batch);
	3606	+ $offset += $batch_size;
	3607	+ unset($batch);
	3608	+ } while (true);
4963	3609
4964		- if (empty($batch)) {
4965		- break;
	3610	+ if (empty($embeddings)) {
	3611	+ return '';
4966	3612	}
	3613	+
	3614	+ // Cache embeddings for future use (but note: this now includes content and role restrictions)
	3615	+ wp_cache_set($cache_key, $embeddings, 'mxchat_system_prompts', 3600);
	3616	+ }
4967	3617
4968		- foreach ($batch as $row) {
4969		- $database_embedding = $row->embedding_vector
4970		- ? unserialize($row->embedding_vector, ['allowed_classes' => false])
4971		- : null;
	3618	+ // Get knowledge manager instance for role checking
	3619	+ $knowledge_manager = MxChat_Knowledge_Manager::get_instance();
4972	3620
4973		- if (!is_array($database_embedding) || !is_array($user_embedding)) {
4974		- unset($database_embedding);
4975		- continue;
4976		- }
4977		-
	3621	+ // Get base similarity threshold from bot options or default options
	3622	+ $similarity_threshold = isset($current_options['similarity_threshold'])
	3623	+ ? ((int) $current_options['similarity_threshold']) / 100
	3624	+ : 0.35;
	3625	+
	3626	+ $this->last_similarity_analysis['threshold_used'] = $similarity_threshold;
	3627	+
	3628	+ // Calculate similarities and build results array
	3629	+ $all_similarities = [];
	3630	+ $relevant_results = [];
	3631	+
	3632	+ foreach ($embeddings as $embedding) {
	3633	+ $database_embedding = $embedding->embedding_vector
	3634	+ ? unserialize($embedding->embedding_vector, ['allowed_classes' => false])
	3635	+ : null;
	3636	+
	3637	+ if (is_array($database_embedding) && is_array($user_embedding)) {
4978	3638	$similarity = $this->mxchat_calculate_cosine_similarity($user_embedding, $database_embedding);
4979		- unset($database_embedding);
4980		-
4981		- $role_restriction = $row->role_restriction ?? 'public';
	3639	+
	3640	+ // Check role access
	3641	+ $role_restriction = $embedding->role_restriction ?? 'public';
4982	3642	$has_access = $knowledge_manager->mxchat_user_has_content_access($role_restriction);
4983		- $source_url = $row->source_url ?? '';
4984		-
4985		- // Maintain top 10 display buffer (insert-if-beats-worst)
4986		- if (count($top_display) < 10) {
4987		- $top_display[] = [
4988		- 'id' => $row->id,
4989		- 'similarity' => $similarity,
4990		- 'source_url' => $source_url,
4991		- 'role_restriction' => $role_restriction,
4992		- 'has_access' => $has_access,
4993		- ];
4994		- usort($top_display, function ($a, $b) {
4995		- return $b['similarity'] <=> $a['similarity'];
4996		- });
4997		- } elseif ($similarity > $top_display[9]['similarity']) {
4998		- $top_display[9] = [
4999		- 'id' => $row->id,
5000		- 'similarity' => $similarity,
5001		- 'source_url' => $source_url,
5002		- 'role_restriction' => $role_restriction,
5003		- 'has_access' => $has_access,
5004		- ];
5005		- usort($top_display, function ($a, $b) {
5006		- return $b['similarity'] <=> $a['similarity'];
5007		- });
	3643	+
	3644	+ // Store ALL similarities for testing (top 10)
	3645	+ $source_display = '';
	3646	+ if (!empty($embedding->source_url) && $embedding->source_url !== '#') {
	3647	+ $source_display = $embedding->source_url;
	3648	+ } else {
	3649	+ $content_preview = strip_tags($embedding->article_content ?? '');
	3650	+ $content_preview = preg_replace('/\s+/', ' ', $content_preview);
	3651	+ $source_display = substr(trim($content_preview), 0, 50) . '...';
5008	3652	}
5009		-
5010		- // Track candidates for context assembly (above threshold + has access)
	3653	+
	3654	+ $all_similarities[] = [
	3655	+ 'document_id' => $embedding->id,
	3656	+ 'similarity' => $similarity,
	3657	+ 'similarity_percentage' => round($similarity * 100, 2),
	3658	+ 'above_threshold' => $similarity >= $similarity_threshold,
	3659	+ 'source_display' => $source_display,
	3660	+ 'content_preview' => substr(strip_tags($embedding->article_content ?? ''), 0, 100) . '...',
	3661	+ 'used_for_context' => false, // Initialize as false, we'll update this later
	3662	+ 'role_restriction' => $role_restriction, // Include role info for testing
	3663	+ 'has_access' => $has_access, // Include access info for testing
	3664	+ 'filtered_out' => !$has_access // Mark if filtered out by role
	3665	+ ];
	3666	+
	3667	+ // Only consider results above threshold AND with access for actual content retrieval
5011	3668	if ($similarity >= $similarity_threshold && $has_access) {
5012		- $candidates[] = [
5013		- 'id' => $row->id,
5014		- 'similarity' => $similarity,
5015		- 'source_url' => $source_url,
	3669	+ $relevant_results[] = [
	3670	+ 'id' => $embedding->id,
	3671	+ 'similarity' => $similarity
5016	3672	];
5017	3673	}
5018		-
5019		- $total_checked++;
5020	3674	}
5021		-
5022		- unset($batch);
5023		-
5024		- // Trim candidates periodically to cap memory during long scans
5025		- if (count($candidates) > $max_candidates) {
5026		- usort($candidates, function ($a, $b) {
5027		- return $b['similarity'] <=> $a['similarity'];
5028		- });
5029		- $candidates = array_slice($candidates, 0, $max_candidates);
5030		- }
5031		-
5032		- $offset += $batch_size;
5033		- } while (true);
5034		-
5035		- if ($total_checked === 0) {
5036		- $this->current_valid_urls = [];
5037		- return '';
	3675	+
	3676	+ unset($database_embedding);
5038	3677	}
5039	3678
5040		- // Final candidates sort (best first)
5041		- if (count($candidates) > 1) {
5042		- usort($candidates, function ($a, $b) {
5043		- return $b['similarity'] <=> $a['similarity'];
5044		- });
5045		- }
5046		-
5047		- // ===== PHASE 2: FETCH ARTICLE CONTENT ONLY FOR WINNERS =====
5048		- // Gather unique IDs we actually need (top_display + candidates) and pull
5049		- // article_content in bounded IN() batches. This avoids loading content for
5050		- // every row during the similarity scan.
5051		- $needed_ids = [];
5052		- foreach ($top_display as $item) {
5053		- $needed_ids[$item['id']] = true;
5054		- }
5055		- foreach ($candidates as $item) {
5056		- $needed_ids[$item['id']] = true;
5057		- }
5058		- $needed_ids = array_keys($needed_ids);
5059		-
5060		- $content_map = [];
5061		- if (!empty($needed_ids)) {
5062		- foreach (array_chunk($needed_ids, 250) as $chunk_ids) {
5063		- $placeholders = implode(',', array_fill(0, count($chunk_ids), '%d'));
5064		- $rows = $wpdb->get_results($wpdb->prepare(
5065		- "SELECT id, article_content FROM {$system_prompt_table} WHERE id IN ($placeholders)",
5066		- ...$chunk_ids
5067		- ));
5068		- foreach ($rows as $r) {
5069		- $content_map[$r->id] = $r->article_content;
5070		- }
5071		- unset($rows);
5072		- }
5073		- }
5074		-
5075		- // Build the all_similarities display array from the top 10
5076		- $all_similarities = [];
5077		- foreach ($top_display as $item) {
5078		- $article_content_for_parse = $content_map[$item['id']] ?? '';
5079		- $parsed_for_display = MxChat_Chunker::parse_stored_chunk($article_content_for_parse);
5080		- $is_chunk = $parsed_for_display['is_chunked'];
5081		- $chunk_meta = $parsed_for_display['metadata'];
5082		-
5083		- if (!empty($item['source_url']) && $item['source_url'] !== '#') {
5084		- $source_display = $item['source_url'];
5085		- } else {
5086		- $content_preview = strip_tags($article_content_for_parse);
5087		- $content_preview = preg_replace('/\s+/', ' ', $content_preview);
5088		- $source_display = substr(trim($content_preview), 0, 50) . '...';
5089		- }
5090		-
5091		- $all_similarities[] = [
5092		- 'document_id' => $item['id'],
5093		- 'similarity' => $item['similarity'],
5094		- 'similarity_percentage' => round($item['similarity'] * 100, 2),
5095		- 'above_threshold' => $item['similarity'] >= $similarity_threshold,
5096		- 'source_display' => $source_display,
5097		- 'content_preview' => substr(strip_tags($parsed_for_display['text'] ?? ''), 0, 100) . '...',
5098		- 'used_for_context' => false,
5099		- 'role_restriction' => $item['role_restriction'],
5100		- 'has_access' => $item['has_access'],
5101		- 'filtered_out' => !$item['has_access'],
5102		- 'is_chunk' => $is_chunk,
5103		- 'chunk_index' => $is_chunk ? ($chunk_meta['chunk_index'] ?? 0) : null,
5104		- 'total_chunks' => $is_chunk ? ($chunk_meta['total_chunks'] ?? 1) : null
5105		- ];
5106		- }
5107		-
5108		- // Build url_groups from candidates for chunk reassembly
5109		- $url_groups = array();
5110		- foreach ($candidates as $cand) {
5111		- $article_content = $content_map[$cand['id']] ?? '';
5112		- $parsed = MxChat_Chunker::parse_stored_chunk($article_content);
5113		- $is_chunked = $parsed['is_chunked'];
5114		- $chunk_index = $parsed['metadata']['chunk_index'] ?? 0;
5115		- $text_content = $parsed['text'];
5116		-
5117		- $source_url = $cand['source_url'];
5118		- $group_key = !empty($source_url) ? $source_url : '_manual_' . $cand['id'];
5119		-
5120		- if (!isset($url_groups[$group_key])) {
5121		- $url_groups[$group_key] = array(
5122		- 'source_url' => $source_url,
5123		- 'best_score' => 0,
5124		- 'is_chunked' => $is_chunked,
5125		- 'chunks' => array(),
5126		- 'single_text' => '',
5127		- 'single_id' => null
5128		- );
5129		- }
5130		-
5131		- if ($cand['similarity'] > $url_groups[$group_key]['best_score']) {
5132		- $url_groups[$group_key]['best_score'] = $cand['similarity'];
5133		- }
5134		-
5135		- if ($is_chunked) {
5136		- $url_groups[$group_key]['is_chunked'] = true;
5137		- $url_groups[$group_key]['chunks'][] = array(
5138		- 'id' => $cand['id'],
5139		- 'score' => $cand['similarity'],
5140		- 'chunk_index' => $chunk_index,
5141		- 'text' => $text_content
5142		- );
5143		- } else {
5144		- $url_groups[$group_key]['single_text'] = $text_content;
5145		- $url_groups[$group_key]['single_id'] = $cand['id'];
5146		- }
5147		- }
5148		-
5149	3679	// Sort ALL similarities for testing display (highest first)
5150	3680	usort($all_similarities, function ($a, $b) {
5151	3681	return $b['similarity'] <=> $a['similarity'];
5152	3682	});
5153		-
5154		- // Sort URL groups by best score (highest first)
5155		- uasort($url_groups, function($a, $b) {
5156		- return $b['best_score'] <=> $a['best_score'];
	3683	+
	3684	+ // Sort relevant results by similarity (highest first)
	3685	+ usort($relevant_results, function ($a, $b) {
	3686	+ return $b['similarity'] <=> $a['similarity'];
5157	3687	});
5158		-
5159		- // Get RAG sources limit from options (default 6, min 3, max 10)
5160		- $rag_sources_limit = isset($current_options['rag_sources_limit']) ? intval($current_options['rag_sources_limit']) : 3;
5161		- if ($rag_sources_limit < 3) $rag_sources_limit = 3;
5162		- if ($rag_sources_limit > 10) $rag_sources_limit = 10;
5163		-
5164		- // Take top N unique URLs based on user setting
5165		- $top_urls = array_slice($url_groups, 0, $rag_sources_limit, true);
5166		-
5167		- // Track which document IDs are used for context
	3688	+
	3689	+ // Get top 5 results for actual content (standard approach)
	3690	+ $top_results = array_slice($relevant_results, 0, 5);
	3691	+
	3692	+ // NOW mark which documents are actually used for context
5168	3693	$used_document_ids = [];
5169		- foreach ($top_urls as $group) {
5170		- if ($group['is_chunked']) {
5171		- foreach ($group['chunks'] as $chunk) {
5172		- $used_document_ids[] = $chunk['id'];
5173		- }
5174		- } elseif ($group['single_id']) {
5175		- $used_document_ids[] = $group['single_id'];
5176		- }
	3694	+ foreach ($top_results as $result) {
	3695	+ $used_document_ids[] = $result['id'];
5177	3696	}
5178		-
	3697	+
5179	3698	// Update the all_similarities array to mark which were actually used
5180	3699	foreach ($all_similarities as &$similarity_item) {
5181	3700	$similarity_item['used_for_context'] = in_array($similarity_item['document_id'], $used_document_ids);
5182	3701	}
5183		-
5184		- // Store top 10 for testing panel
	3702	+
	3703	+ // Store top 10 for testing panel (now with correct used_for_context flags and role info)
5185	3704	$this->last_similarity_analysis['top_matches'] = array_slice($all_similarities, 0, 10);
5186		- $this->last_similarity_analysis['total_checked'] = $total_checked;
5187		-
	3705	+ $this->last_similarity_analysis['total_checked'] = count($embeddings);
	3706	+
	3707	+ //error_log("MxChat Testing: Stored " . count($this->last_similarity_analysis['top_matches']) . " top matches for testing");
	3708	+
5188	3709	// Initialize final content
5189	3710	$content = '';
5190		- $matches_used = 0;
5191		- $total_chunks_used = 0;
5192		- $max_total_chunks = isset($current_options['rag_chunks_limit']) ? intval($current_options['rag_chunks_limit']) : 15;
5193		- if ($max_total_chunks < 8) $max_total_chunks = 8;
5194		- if ($max_total_chunks > 20) $max_total_chunks = 20;
5195		- $max_chunks_per_source = 5; // Cap per individual source to limit token usage
5196		-
5197		- // Check if citation links are enabled (default to 'on' for backwards compatibility)
5198		- // Use fresh options to ensure we get the latest setting value
5199		- $fresh_options = get_option('mxchat_options', []);
5200		- $citation_links_enabled = isset($fresh_options['citation_links_toggle']) ? ($fresh_options['citation_links_toggle'] === 'on') : true;
5201		-
5202		- // Build content from top sources
5203		- foreach ($top_urls as $group_key => $group) {
5204		- $source_url = $group['source_url']; // Use actual source_url, not the group key
5205		-
5206		- // Stop if we've hit the total chunk limit
5207		- if ($total_chunks_used >= $max_total_chunks) {
5208		- break;
	3711	+
	3712	+ // Track document IDs to avoid duplicates
	3713	+ $added_document_ids = [];
	3714	+
	3715	+ // Fetch and format content for each selected result
	3716	+ foreach ($top_results as $index => $result) {
	3717	+ if (in_array($result['id'], $added_document_ids)) {
	3718	+ continue;
5209	3719	}
5210		-
5211		- $full_text = '';
5212		- $chunks_in_this_source = 1; // Default for non-chunked content
5213		-
5214		- if ($group['is_chunked']) {
5215		- // Calculate how many chunks we can still use (respect both total and per-source caps)
5216		- $chunks_remaining = min($max_chunks_per_source, $max_total_chunks - $total_chunks_used);
5217		-
5218		- // Fetch chunks for this URL with limit
5219		- $full_text = $this->reassemble_chunks_from_wordpress($source_url, $chunks_remaining, $chunks_in_this_source);
5220		-
5221		- // If fetching all chunks fails, fall back to matched chunks
5222		- if (empty($full_text)) {
5223		- // Sort matched chunks by index and concatenate
5224		- usort($group['chunks'], function($a, $b) {
5225		- return $a['chunk_index'] <=> $b['chunk_index'];
5226		- });
5227		-
5228		- $chunk_texts = array();
5229		- $chunks_in_this_source = 0;
5230		- foreach ($group['chunks'] as $chunk) {
5231		- if ($total_chunks_used + $chunks_in_this_source >= $max_total_chunks) {
5232		- break;
5233		- }
5234		- $chunk_texts[] = $chunk['text'];
5235		- $chunks_in_this_source++;
	3720	+
	3721	+ $chunk_content = $this->fetch_content_with_product_links($result['id']);
	3722	+ $added_document_ids[] = $result['id'];
	3723	+
	3724	+ $content .= "## Reference " . ($index + 1) . " ##\n";
	3725	+ $content .= $chunk_content . "\n\n";
	3726	+
	3727	+ // PDF surrounding pages logic (unchanged)
	3728	+ if (strpos($chunk_content, '{"document_type":"pdf"') !== false) {
	3729	+ $surrounding_content = $wpdb->get_results($wpdb->prepare(
	3730	+ "SELECT id, article_content, role_restriction FROM {$system_prompt_table}
	3731	+ WHERE id IN (
	3732	+ (SELECT id FROM {$system_prompt_table} WHERE id < %d ORDER BY id DESC LIMIT 1),
	3733	+ (SELECT id FROM {$system_prompt_table} WHERE id > %d ORDER BY id ASC LIMIT 1)
	3734	+ )",
	3735	+ $result['id'],
	3736	+ $result['id']
	3737	+ ));
	3738	+
	3739	+ // Check role access for surrounding content too
	3740	+ if (!empty($surrounding_content[0])) {
	3741	+ $surrounding_role = $surrounding_content[0]->role_restriction ?? 'public';
	3742	+ if ($knowledge_manager->mxchat_user_has_content_access($surrounding_role)) {
	3743	+ $content .= "## Related Content ##\n";
	3744	+ $content .= $surrounding_content[0]->article_content . "\n\n";
	3745	+ $added_document_ids[] = $surrounding_content[0]->id;
5236	3746	}
5237		- $full_text = implode("\n\n", $chunk_texts);
5238	3747	}
5239		- } else {
5240		- $full_text = $group['single_text'];
5241		- $chunks_in_this_source = 1;
5242		- }
5243		-
5244		- if (!empty($full_text)) {
5245		- // Strip URLs from content if citation links are disabled
5246		- if (!$citation_links_enabled) {
5247		- $full_text = preg_replace('#\bhttps?://[^\s<>"\']+#i', '', $full_text);
5248		- $full_text = preg_replace('/\s+/', ' ', trim($full_text)); // Clean up extra spaces
5249		- }
5250		-
5251		- // Use numbered reference for URL-based entries, plain info label for manual entries
5252		- // Manual entries are stored with an internal mxchat:// placeholder URL — never expose them as citations
5253		- if (!empty($source_url) && $source_url !== '#' && strpos($source_url, 'mxchat://') !== 0) {
5254		- $matches_used++;
5255		- $content .= "## Reference " . $matches_used . " ##\n";
5256		- $content .= $full_text . "\n\n";
5257		-
5258		- // Only include citation URLs if citation links are enabled
5259		- if ($citation_links_enabled) {
5260		- $valid_urls[] = $source_url;
5261		- $content .= "URL: " . $source_url . "\n\n";
	3748	+
	3749	+ if (!empty($surrounding_content[1])) {
	3750	+ $surrounding_role = $surrounding_content[1]->role_restriction ?? 'public';
	3751	+ if ($knowledge_manager->mxchat_user_has_content_access($surrounding_role)) {
	3752	+ $content .= "## Related Content ##\n";
	3753	+ $content .= $surrounding_content[1]->article_content . "\n\n";
	3754	+ $added_document_ids[] = $surrounding_content[1]->id;
5262	3755	}
5263		- } else {
5264		- // Manual entry — no reference number, no citation
5265		- $content .= "## Information ##\n";
5266		- $content .= $full_text . "\n\n";
5267	3756	}
5268		-
5269		- // Extract any URLs from the text content itself (only if citation links enabled)
5270		- if ($citation_links_enabled) {
5271		- preg_match_all(
5272		- '#\bhttps?://[^\s<>"\']+#i',
5273		- $full_text,
5274		- $content_urls
5275		- );
5276		- if (!empty($content_urls[0])) {
5277		- $valid_urls = array_merge($valid_urls, $content_urls[0]);
5278		- }
5279		- }
5280		-
5281		- $total_chunks_used += $chunks_in_this_source;
5282	3757	}
5283	3758	}
5284		-
5285		- // NEW: Store unique valid URLs for validation
5286		- $this->current_valid_urls = array_unique($valid_urls);
5287		-
5288		- // Store sources and chunks counts for testing/transcript display
5289		- $this->last_similarity_analysis['sources_used'] = $matches_used;
5290		- $this->last_similarity_analysis['total_chunks_used'] = $total_chunks_used;
5291		-
5292		- // Allow add-ons to act on similarity results (e.g. WooCommerce product card display)
5293		- do_action('mxchat_similarity_results', $this->last_similarity_analysis['top_matches'], $bot_id);
5294		-
	3759	+
5295	3760	// Add response guidelines
5296		- if (empty($top_urls)) {
	3761	+ if (empty($top_results)) {
5297	3762	$content = "No reference information was found for this query.\n\n";
5298	3763	} else {
5299		- // Build response guidelines based on citation links setting
5300	3764	$content .= "\n## Response Guidelines ##\n" .
5301	3765	"You are an AI Chatbot. Answer naturally and helpfully using only the information from the references above. " .
5302	3766	"Be conversational and friendly, but never mention your knowledge base or training data. " .
5303	3767	"If you don't have specific information or are uncertain about any details, it's always " .
5304	3768	"better to honestly say you don't know rather than making up or guessing at answers. " .
5305		- "When information is incomplete, let them know you are unsure.\n\n";
5306		-
5307		- // Only add hyperlink instructions if citation links are enabled
5308		- if ($citation_links_enabled) {
5309		- $content .= "CRITICAL: When creating hyperlinks, always use proper markdown format with descriptive text: " .
5310		- "[descriptive text](url). NEVER use empty brackets like [](url). The text in brackets must describe what the link is about. " .
5311		- "Only cite references that have a URL. Do not cite or add source labels to Information sections that have no URL.";
5312		- } else {
5313		- $content .= "IMPORTANT: Do not include any citation links, source URLs, or hyperlinks in your responses. " .
5314		- "Simply provide helpful answers based on the reference information without citing sources.";
5315		- }
	3769	+ "When information is incomplete, let them know you are unsure.";
5316	3770	}
5317	3771
5318	3772	return trim($content);
5319	3773	}
5320	3774
5321		-/**
5322		- * Fetch and reassemble chunks for a URL from WordPress database
5323		- *
5324		- * @param string $source_url The source URL to fetch chunks for
5325		- * @param int $max_chunks Maximum number of chunks to return (0 = unlimited)
5326		- * @param int &$chunk_count Reference to store the actual number of chunks returned
5327		- * @return string Reassembled content from chunks
5328		- */
5329		-private function reassemble_chunks_from_wordpress($source_url, $max_chunks = 0, &$chunk_count = 0) {
5330		- global $wpdb;
5331		- $table = $wpdb->prefix . 'mxchat_system_prompt_content';
5332		-
5333		- // Fetch all rows with this source_url
5334		- $rows = $wpdb->get_results($wpdb->prepare(
5335		- "SELECT article_content FROM {$table}
5336		- WHERE source_url = %s
5337		- ORDER BY id ASC",
5338		- $source_url
5339		- ));
5340		-
5341		- if (empty($rows)) {
5342		- $chunk_count = 0;
5343		- return '';
5344		- }
5345		-
5346		- // Parse and sort chunks by index
5347		- $chunks = array();
5348		- foreach ($rows as $row) {
5349		- $parsed = MxChat_Chunker::parse_stored_chunk($row->article_content);
5350		-
5351		- if ($parsed['is_chunked']) {
5352		- $chunk_index = $parsed['metadata']['chunk_index'] ?? 0;
5353		- $chunks[$chunk_index] = $parsed['text'];
5354		- } else {
5355		- // Non-chunked content - just return it
5356		- $chunks[] = $parsed['text'];
5357		- }
5358		- }
5359		-
5360		- // Sort by chunk index
5361		- ksort($chunks);
5362		-
5363		- // Apply chunk limit if specified
5364		- if ($max_chunks > 0 && count($chunks) > $max_chunks) {
5365		- $chunks = array_slice($chunks, 0, $max_chunks, true);
5366		- }
5367		-
5368		- // Store actual chunk count
5369		- $chunk_count = count($chunks);
5370		-
5371		- // Reassemble content
5372		- return implode("\n\n", $chunks);
5373		-}
5374		-
5375	3775	private function find_relevant_content_pinecone($user_embedding, $bot_id = 'default', $bot_config = null) {
5376	3776	global $wpdb;
5377	3777
5378		- //error_log("MXCHAT DEBUG: find_relevant_content_pinecone called");
5379		- //error_log(" - bot_id: " . $bot_id);
5380		- //error_log(" - user_embedding is array: " . (is_array($user_embedding) ? 'yes' : 'no'));
5381		- //error_log(" - user_embedding count: " . (is_array($user_embedding) ? count($user_embedding) : 'N/A'));
	3778	+ error_log("MXCHAT DEBUG: find_relevant_content_pinecone called");
	3779	+ error_log(" - bot_id: " . $bot_id);
	3780	+ error_log(" - user_embedding is array: " . (is_array($user_embedding) ? 'yes' : 'no'));
	3781	+ error_log(" - user_embedding count: " . (is_array($user_embedding) ? count($user_embedding) : 'N/A'));
5382	3782
5383	3783	// Use bot-specific config or fall back to default
5384	3784	if ($bot_config === null) {
5385	3785	$bot_config = $this->get_bot_pinecone_config($bot_id);
		@@ -5388,12 +3788,12 @@
5388	3788	$api_key = $bot_config['api_key'] ?? '';
5389	3789	$host = $bot_config['host'] ?? '';
5390	3790	$namespace = $bot_config['namespace'] ?? '';
5391	3791
5392		- //error_log("MXCHAT DEBUG: Pinecone query parameters:");
5393		- //error_log(" - API Key: " . (empty($api_key) ? 'EMPTY - ERROR!' : 'Present (length: ' . strlen($api_key) . ')'));
5394		- //error_log(" - Host: " . (empty($host) ? 'EMPTY - ERROR!' : $host));
5395		- //error_log(" - Namespace: " . (empty($namespace) ? 'EMPTY (will use default)' : $namespace));
	3792	+ error_log("MXCHAT DEBUG: Pinecone query parameters:");
	3793	+ error_log(" - API Key: " . (empty($api_key) ? 'EMPTY - ERROR!' : 'Present (length: ' . strlen($api_key) . ')'));
	3794	+ error_log(" - Host: " . (empty($host) ? 'EMPTY - ERROR!' : $host));
	3795	+ error_log(" - Namespace: " . (empty($namespace) ? 'EMPTY (will use default)' : $namespace));
5396	3796
5397	3797	// Initialize similarity analysis storage
5398	3798	$this->last_similarity_analysis = [
5399	3799	'knowledge_base_type' => 'Pinecone',
		@@ -5403,17 +3803,12 @@
5403	3803	'threshold_used' => 0,
5404	3804	'total_checked' => 0
5405	3805	];
5406	3806
5407		- // NEW: Initialize valid URLs array
5408		- $valid_urls = [];
5409		-
5410	3807	if (empty($host) || empty($api_key)) {
5411		- //error_log("MXCHAT DEBUG ERROR: Missing Pinecone host or API key!");
5412		- //error_log(" - Host empty: " . (empty($host) ? 'YES' : 'NO'));
5413		- //error_log(" - API key empty: " . (empty($api_key) ? 'YES' : 'NO'));
5414		- // Store empty array for valid URLs since we can't proceed
5415		- $this->current_valid_urls = [];
	3808	+ error_log("MXCHAT DEBUG ERROR: Missing Pinecone host or API key!");
	3809	+ error_log(" - Host empty: " . (empty($host) ? 'YES' : 'NO'));
	3810	+ error_log(" - API key empty: " . (empty($api_key) ? 'YES' : 'NO'));
5416	3811	return '';
5417	3812	}
5418	3813
5419	3814	// Get knowledge manager instance for role checking
		@@ -5433,9 +3828,9 @@
5433	3828	$api_endpoint = "https://{$host}/query";
5434	3829
5435	3830	$request_body = array(
5436	3831	'vector' => $user_embedding,
5437		- 'topK' => 50, // Increased for chunked content grouping - need more candidates to find top N unique URLs
	3832	+ 'topK' => 20, // Request more to get good testing data
5438	3833	'includeMetadata' => true,
5439	3834	'includeValues' => true
5440	3835	);
5441	3836
		@@ -5443,11 +3838,11 @@
5443	3838	if (!empty($namespace)) {
5444	3839	$request_body['namespace'] = $namespace;
5445	3840	}
5446	3841
5447		- //error_log("MXCHAT DEBUG: About to call Pinecone API");
5448		- //error_log(" - Endpoint: " . $api_endpoint);
5449		- //error_log(" - Namespace in request: " . (!empty($namespace) ? $namespace : 'NOT SET'));
	3842	+ error_log("MXCHAT DEBUG: About to call Pinecone API");
	3843	+ error_log(" - Endpoint: " . $api_endpoint);
	3844	+ error_log(" - Namespace in request: " . (!empty($namespace) ? $namespace : 'NOT SET'));
5450	3845
5451	3846	$response = wp_remote_post($api_endpoint, array(
5452	3847	'headers' => array(
5453	3848	'Api-Key' => $api_key,
		@@ -5458,61 +3853,53 @@
5458	3853	'timeout' => 30
5459	3854	));
5460	3855
5461	3856	if (is_wp_error($response)) {
5462		- //error_log("MXCHAT DEBUG ERROR: WP Error in Pinecone request: " . $response->get_error_message());
5463		- // Store empty array for valid URLs
5464		- $this->current_valid_urls = [];
	3857	+ error_log("MXCHAT DEBUG ERROR: WP Error in Pinecone request: " . $response->get_error_message());
5465	3858	return '';
5466	3859	}
5467	3860
5468	3861	$response_code = wp_remote_retrieve_response_code($response);
5469		- //error_log("MXCHAT DEBUG: Pinecone response code: " . $response_code);
	3862	+ error_log("MXCHAT DEBUG: Pinecone response code: " . $response_code);
5470	3863
5471	3864	if ($response_code !== 200) {
5472	3865	$response_body = wp_remote_retrieve_body($response);
5473		- //error_log("MXCHAT DEBUG ERROR: Pinecone API error response: " . substr($response_body, 0, 500));
5474		- // Store empty array for valid URLs
5475		- $this->current_valid_urls = [];
	3866	+ error_log("MXCHAT DEBUG ERROR: Pinecone API error response: " . substr($response_body, 0, 500));
5476	3867	return '';
5477	3868	}
5478	3869
5479	3870	// ADD DETAILED DEBUG SECTION HERE
5480	3871	$response_body = wp_remote_retrieve_body($response);
5481		- //error_log("MXCHAT DEBUG: Raw Pinecone response length: " . strlen($response_body));
	3872	+ error_log("MXCHAT DEBUG: Raw Pinecone response length: " . strlen($response_body));
5482	3873
5483	3874	$results = json_decode($response_body, true);
5484	3875
5485	3876	if (json_last_error() !== JSON_ERROR_NONE) {
5486		- //error_log("MXCHAT DEBUG ERROR: JSON decode error: " . json_last_error_msg());
5487		- //error_log("MXCHAT DEBUG: First 500 chars of response: " . substr($response_body, 0, 500));
5488		- // Store empty array for valid URLs
5489		- $this->current_valid_urls = [];
	3877	+ error_log("MXCHAT DEBUG ERROR: JSON decode error: " . json_last_error_msg());
	3878	+ error_log("MXCHAT DEBUG: First 500 chars of response: " . substr($response_body, 0, 500));
5490	3879	return '';
5491	3880	}
5492	3881
5493		- //error_log("MXCHAT DEBUG: Pinecone response structure:");
5494		- //error_log(" - Has 'matches' key: " . (isset($results['matches']) ? 'yes' : 'no'));
5495		- //error_log(" - Has 'namespace' key: " . (isset($results['namespace']) ? 'yes (' . $results['namespace'] . ')' : 'no'));
	3882	+ error_log("MXCHAT DEBUG: Pinecone response structure:");
	3883	+ error_log(" - Has 'matches' key: " . (isset($results['matches']) ? 'yes' : 'no'));
	3884	+ error_log(" - Has 'namespace' key: " . (isset($results['namespace']) ? 'yes (' . $results['namespace'] . ')' : 'no'));
5496	3885
5497	3886	if (empty($results['matches'])) {
5498		- //error_log("MXCHAT DEBUG: No matches found in Pinecone response");
5499		- //error_log("MXCHAT DEBUG: Response keys: " . implode(', ', array_keys($results)));
5500		- // Store empty array for valid URLs
5501		- $this->current_valid_urls = [];
	3887	+ error_log("MXCHAT DEBUG: No matches found in Pinecone response");
	3888	+ error_log("MXCHAT DEBUG: Response keys: " . implode(', ', array_keys($results)));
5502	3889	return '';
5503	3890	}
5504	3891
5505		- //error_log("MXCHAT DEBUG: Found " . count($results['matches']) . " matches in Pinecone");
	3892	+ error_log("MXCHAT DEBUG: Found " . count($results['matches']) . " matches in Pinecone");
5506	3893
5507	3894	// Log first match details for debugging
5508	3895	if (!empty($results['matches'][0])) {
5509	3896	$first_match = $results['matches'][0];
5510		- //error_log("MXCHAT DEBUG: First match details:");
5511		- //error_log(" - Score: " . ($first_match['score'] ?? 'no score'));
5512		- //error_log(" - Has metadata: " . (isset($first_match['metadata']) ? 'yes' : 'no'));
	3897	+ error_log("MXCHAT DEBUG: First match details:");
	3898	+ error_log(" - Score: " . ($first_match['score'] ?? 'no score'));
	3899	+ error_log(" - Has metadata: " . (isset($first_match['metadata']) ? 'yes' : 'no'));
5513	3900	if (isset($first_match['metadata'])) {
5514		- //error_log(" - Metadata keys: " . implode(', ', array_keys($first_match['metadata'])));
	3901	+ error_log(" - Metadata keys: " . implode(', ', array_keys($first_match['metadata'])));
5515	3902	}
5516	3903	}
5517	3904
5518	3905	// Initialize the final content
		@@ -5518,182 +3905,45 @@
5518	3905	// Initialize the final content
5519	3906	$content = '';
5520	3907	$matches_used = 0;
5521	3908	$matches_used_for_context = [];
5522		- $total_chunks_used = 0;
5523		- $max_total_chunks = isset($current_options['rag_chunks_limit']) ? intval($current_options['rag_chunks_limit']) : 15;
5524		- if ($max_total_chunks < 8) $max_total_chunks = 8;
5525		- if ($max_total_chunks > 20) $max_total_chunks = 20;
5526		- $max_chunks_per_source = 5; // Cap per individual source to limit token usage
5527		-
5528		- // Check if citation links are enabled (default to 'on' for backwards compatibility)
5529		- // Use fresh options to ensure we get the latest setting value
5530		- $fresh_options = get_option('mxchat_options', []);
5531		- $citation_links_enabled = isset($fresh_options['citation_links_toggle']) ? ($fresh_options['citation_links_toggle'] === 'on') : true;
5532		-
5533		- // NEW CHUNKING LOGIC: Group results by source_url for chunk reassembly
5534		- $url_groups = array();
5535		-
	3909	+
	3910	+ // Process each match for actual content generation (lazy role checking)
5536	3911	foreach ($results['matches'] as $index => $match) {
5537	3912	// Skip if similarity is below threshold
5538	3913	if ($match['score'] < $similarity_threshold) {
5539	3914	continue;
5540	3915	}
5541		-
5542		- $metadata = $match['metadata'] ?? array();
5543		- $source_url = $metadata['source_url'] ?? '';
5544		- $match_id = $match['id'] ?? '';
5545		-
5546		- // LAZY ROLE CHECK: Only check role for content we're actually considering
5547		- $role_restriction = $this->get_single_vector_role($match_id, $metadata);
5548		- $has_access = $knowledge_manager->mxchat_user_has_content_access($role_restriction);
5549		-
5550		- // Skip if user doesn't have access
5551		- if (!$has_access) {
5552		- continue;
5553		- }
5554		-
5555		- // Use a unique key for manual entries without a source URL
5556		- $group_key = !empty($source_url) ? $source_url : '_manual_' . $match_id;
5557		-
5558		- // Group by source URL (or unique key for manual entries)
5559		- if (!isset($url_groups[$group_key])) {
5560		- $url_groups[$group_key] = array(
5561		- 'source_url' => $source_url,
5562		- 'best_score' => 0,
5563		- 'is_chunked' => isset($metadata['is_chunked']) && $metadata['is_chunked'],
5564		- 'chunks' => array(),
5565		- 'single_text' => ''
5566		- );
5567		- }
5568		-
5569		- // Track best score for this group
5570		- if ($match['score'] > $url_groups[$group_key]['best_score']) {
5571		- $url_groups[$group_key]['best_score'] = $match['score'];
5572		- }
5573		-
5574		- // Store chunk info or single text
5575		- if ($url_groups[$group_key]['is_chunked']) {
5576		- $url_groups[$group_key]['chunks'][] = array(
5577		- 'id' => $match_id,
5578		- 'score' => $match['score'],
5579		- 'chunk_index' => $metadata['chunk_index'] ?? 0,
5580		- 'text' => $metadata['text'] ?? ''
5581		- );
5582		- } else {
5583		- // Non-chunked content - just store the text
5584		- $url_groups[$group_key]['single_text'] = $metadata['text'] ?? '';
5585		- $url_groups[$group_key]['single_id'] = $match_id;
5586		- }
5587		- }
5588		-
5589		- // Sort URL groups by best score (highest first)
5590		- uasort($url_groups, function($a, $b) {
5591		- return $b['best_score'] <=> $a['best_score'];
5592		- });
5593		-
5594		- // Get RAG sources limit from options (default 6, min 3, max 10)
5595		- $rag_sources_limit = isset($current_options['rag_sources_limit']) ? intval($current_options['rag_sources_limit']) : 3;
5596		- if ($rag_sources_limit < 3) $rag_sources_limit = 3;
5597		- if ($rag_sources_limit > 10) $rag_sources_limit = 10;
5598		-
5599		- // Take top N unique URLs based on user setting
5600		- $top_urls = array_slice($url_groups, 0, $rag_sources_limit, true);
5601		-
5602		- // Track which match IDs are actually used for context
5603		- foreach ($top_urls as $group) {
5604		- if ($group['is_chunked']) {
5605		- foreach ($group['chunks'] as $chunk) {
5606		- $matches_used_for_context[] = $chunk['id'];
5607		- }
5608		- } elseif (!empty($group['single_id'])) {
5609		- $matches_used_for_context[] = $group['single_id'];
5610		- }
5611		- }
5612		-
5613		- // Build content from top sources
5614		- foreach ($top_urls as $group_key => $group) {
5615		- $source_url = $group['source_url']; // Use actual source_url, not the group key
5616		-
5617		- // Stop if we've hit the total chunk limit
5618		- if ($total_chunks_used >= $max_total_chunks) {
	3916	+
	3917	+ // Limit to top 5 matches above threshold
	3918	+ if ($matches_used >= 5) {
5619	3919	break;
5620	3920	}
5621		-
5622		- $full_text = '';
5623		- $chunks_in_this_source = 1; // Default for non-chunked content
5624		-
5625		- if ($group['is_chunked']) {
5626		- // Calculate how many chunks we can still use (respect both total and per-source caps)
5627		- $chunks_remaining = min($max_chunks_per_source, $max_total_chunks - $total_chunks_used);
5628		-
5629		- // Fetch chunks for this URL with limit
5630		- $full_text = $this->reassemble_chunks_from_pinecone($source_url, $bot_config, $chunks_remaining, $chunks_in_this_source);
5631		-
5632		- // If fetching all chunks fails, fall back to matched chunks
5633		- if (empty($full_text)) {
5634		- // Sort matched chunks by index and concatenate
5635		- usort($group['chunks'], function($a, $b) {
5636		- return $a['chunk_index'] <=> $b['chunk_index'];
5637		- });
5638		-
5639		- $chunk_texts = array();
5640		- $chunks_in_this_source = 0;
5641		- foreach ($group['chunks'] as $chunk) {
5642		- if ($total_chunks_used + $chunks_in_this_source >= $max_total_chunks) {
5643		- break;
5644		- }
5645		- $chunk_texts[] = $chunk['text'];
5646		- $chunks_in_this_source++;
5647		- }
5648		- $full_text = implode("\n\n", $chunk_texts);
	3921	+
	3922	+ if (!empty($match['metadata']['text'])) {
	3923	+ // LAZY ROLE CHECK: Only check role for content we're actually considering
	3924	+ $match_id = $match['id'] ?? '';
	3925	+ $role_restriction = $this->get_single_vector_role($match_id, $match['metadata']);
	3926	+ $has_access = $knowledge_manager->mxchat_user_has_content_access($role_restriction);
	3927	+
	3928	+ // Skip if user doesn't have access
	3929	+ if (!$has_access) {
	3930	+ continue;
5649	3931	}
5650		- } else {
5651		- $full_text = $group['single_text'];
5652		- $chunks_in_this_source = 1;
5653		- }
5654		-
5655		- if (!empty($full_text)) {
5656		- // Strip URLs from content if citation links are disabled
5657		- if (!$citation_links_enabled) {
5658		- $full_text = preg_replace('#\bhttps?://[^\s<>"\']+#i', '', $full_text);
5659		- $full_text = preg_replace('/\s+/', ' ', trim($full_text)); // Clean up extra spaces
	3932	+
	3933	+ // User has access - add to content
	3934	+ $content .= "## Reference " . ($matches_used + 1) . " ##\n";
	3935	+ $content .= $match['metadata']['text'] . "\n\n";
	3936	+
	3937	+ if (!empty($match['metadata']['source_url'])) {
	3938	+ $content .= "URL: " . $match['metadata']['source_url'] . "\n\n";
5660	3939	}
5661		-
5662		- // Use numbered reference for URL-based entries, plain info label for manual entries
5663		- // Manual entries are stored with an internal mxchat:// placeholder URL — never expose them as citations
5664		- if (!empty($source_url) && $source_url !== '#' && strpos($source_url, 'mxchat://') !== 0) {
5665		- $matches_used++;
5666		- $content .= "## Reference " . $matches_used . " ##\n";
5667		- $content .= $full_text . "\n\n";
5668		-
5669		- // Only include citation URLs if citation links are enabled
5670		- if ($citation_links_enabled) {
5671		- $valid_urls[] = $source_url;
5672		- $content .= "URL: " . $source_url . "\n\n";
5673		- }
5674		- } else {
5675		- // Manual entry — no reference number, no citation
5676		- $content .= "## Information ##\n";
5677		- $content .= $full_text . "\n\n";
5678		- }
5679		-
5680		- // Extract any URLs from the text content itself (only if citation links enabled)
5681		- if ($citation_links_enabled) {
5682		- preg_match_all(
5683		- '#\bhttps?://[^\s<>"\']+#i',
5684		- $full_text,
5685		- $content_urls
5686		- );
5687		- if (!empty($content_urls[0])) {
5688		- $valid_urls = array_merge($valid_urls, $content_urls[0]);
5689		- }
5690		- }
5691		-
5692		- $total_chunks_used += $chunks_in_this_source;
	3940	+
	3941	+ $matches_used_for_context[] = $match['id'] ?? $index;
	3942	+ $matches_used++;
5693	3943	}
5694	3944	}
5695		-
	3945	+
5696	3946	// Process ALL matches for testing data (top 10) - with role checking for testing display
5697	3947	$all_matches = [];
5698	3948	foreach ($results['matches'] as $index => $match) {
5699	3949	if ($index >= 10) break; // Limit to top 10 for testing
		@@ -5713,19 +3963,9 @@
5713	3963	$source_display = substr(trim($content_preview), 0, 50) . '...';
5714	3964	}
5715	3965
5716	3966	$match_id_for_display = $match['id'] ?? $index;
5717		-
5718		- // Check for chunk metadata in Pinecone
5719		- $is_chunk = isset($match['metadata']['is_chunked']) && $match['metadata']['is_chunked'];
5720		- $chunk_index = isset($match['metadata']['chunk_index']) ? intval($match['metadata']['chunk_index']) : null;
5721		- $total_chunks = isset($match['metadata']['total_chunks']) ? intval($match['metadata']['total_chunks']) : null;
5722		-
5723		- // Also detect chunk from vector ID pattern: {hash}_chunk_{index}
5724		- if (!$is_chunk && MxChat_Chunker::is_chunk_vector_id($match_id_for_display)) {
5725		- $is_chunk = true;
5726		- }
5727		-
	3967	+
5728	3968	$all_matches[] = [
5729	3969	'document_id' => $match_id_for_display,
5730	3970	'similarity' => $match['score'],
5731	3971	'similarity_percentage' => round($match['score'] * 100, 2),
		@@ -5734,12 +3974,9 @@
5734	3974	'content_preview' => substr(strip_tags($match['metadata']['text'] ?? ''), 0, 100) . '...',
5735	3975	'used_for_context' => in_array($match_id_for_display, $matches_used_for_context),
5736	3976	'role_restriction' => $role_restriction,
5737	3977	'has_access' => $has_access,
5738		- 'filtered_out' => !$has_access,
5739		- 'is_chunk' => $is_chunk,
5740		- 'chunk_index' => $chunk_index,
5741		- 'total_chunks' => $total_chunks
	3978	+ 'filtered_out' => !$has_access
5742	3979	];
5743	3980	}
5744	3981
5745	3982	// Store for testing panel
		@@ -5744,43 +3981,25 @@
5744	3981
5745	3982	// Store for testing panel
5746	3983	$this->last_similarity_analysis['top_matches'] = $all_matches;
5747	3984	$this->last_similarity_analysis['total_checked'] = count($results['matches']);
5748		- $this->last_similarity_analysis['sources_used'] = $matches_used;
5749		- $this->last_similarity_analysis['total_chunks_used'] = $total_chunks_used;
5750		-
5751		- // NEW: Store unique valid URLs for validation
5752		- $this->current_valid_urls = array_unique($valid_urls);
5753		-
5754		- // Allow add-ons to act on similarity results (e.g. WooCommerce product card display)
5755		- do_action('mxchat_similarity_results', $this->last_similarity_analysis['top_matches'], $bot_id);
5756		-
	3985	+
5757	3986	// Add response guidelines
5758	3987	if ($matches_used === 0) {
5759	3988	$content = "No reference information was found for this query.\n\n";
5760	3989	} else {
5761		- // Build response guidelines based on citation links setting
5762	3990	$content .= "\n## Response Guidelines ##\n" .
5763	3991	"You are an AI Chatbot. Answer naturally and helpfully using only the information from the references above. " .
5764	3992	"Be conversational and friendly, but never mention your knowledge base or training data. " .
5765	3993	"If you don't have specific information or are uncertain about any details, it's always " .
5766	3994	"better to honestly say you don't know rather than making up or guessing at answers. " .
5767		- "When information is incomplete, let them know you are unsure.\n\n";
5768		-
5769		- // Only add hyperlink instructions if citation links are enabled
5770		- if ($citation_links_enabled) {
5771		- $content .= "CRITICAL: When creating hyperlinks, always use proper markdown format with descriptive text: " .
5772		- "[descriptive text](url). NEVER use empty brackets like [](url). The text in brackets must describe what the link is about. " .
5773		- "Only cite references that have a URL. Do not cite or add source labels to Information sections that have no URL.";
5774		- } else {
5775		- $content .= "IMPORTANT: Do not include any citation links, source URLs, or hyperlinks in your responses. " .
5776		- "Simply provide helpful answers based on the reference information without citing sources.";
5777		- }
	3995	+ "When information is incomplete, let them know you are unsure.";
5778	3996	}
5779		-
	3997	+
5780	3998	return trim($content);
5781	3999	}
5782	4000
	4001	+
5783	4002	/**
5784	4003	* Get role restriction for a single vector (with caching)
5785	4004	*/
5786	4005	private function get_single_vector_role($vector_id, $metadata = array()) {
		@@ -5817,518 +4036,12 @@
5817	4036	}
5818	4037
5819	4038	// Cache individual role for 1 hour
5820	4039	wp_cache_set($cache_key, $role_restriction, 'mxchat_vector_roles', 3600);
5821		-
	4040	+
5822	4041	return $role_restriction;
5823	4042	}
5824	4043
5825		-/**
5826		- * Fetch and reassemble all chunks for a URL from Pinecone
5827		- *
5828		- * @param string $source_url The source URL to fetch chunks for
5829		- * @param array $bot_config Bot-specific Pinecone configuration
5830		- * @return string Reassembled content from all chunks
5831		- */
5832		-private function reassemble_chunks_from_pinecone($source_url, $bot_config, $max_chunks = 0, &$chunk_count = 0) {
5833		- $api_key = $bot_config['api_key'] ?? '';
5834		- $host = $bot_config['host'] ?? '';
5835		- $namespace = $bot_config['namespace'] ?? '';
5836		-
5837		- if (empty($host) || empty($api_key)) {
5838		- $chunk_count = 0;
5839		- return '';
5840		- }
5841		-
5842		- $base_hash = md5($source_url);
5843		-
5844		- // Use Pinecone list API to find all chunk vectors with this prefix
5845		- $list_url = "https://{$host}/vectors/list";
5846		-
5847		- // Limit to max_chunks if specified, otherwise fetch up to 100
5848		- $fetch_limit = ($max_chunks > 0 && $max_chunks < 100) ? $max_chunks : 100;
5849		-
5850		- $list_body = array(
5851		- 'prefix' => $base_hash . '_chunk_',
5852		- 'limit' => $fetch_limit
5853		- );
5854		-
5855		- if (!empty($namespace)) {
5856		- $list_body['namespace'] = $namespace;
5857		- }
5858		-
5859		- $list_response = wp_remote_post($list_url, array(
5860		- 'headers' => array(
5861		- 'Api-Key' => $api_key,
5862		- 'accept' => 'application/json',
5863		- 'content-type' => 'application/json'
5864		- ),
5865		- 'body' => wp_json_encode($list_body),
5866		- 'timeout' => 30
5867		- ));
5868		-
5869		- if (is_wp_error($list_response)) {
5870		- //error_log('[MXCHAT-CHUNK] List API error: ' . $list_response->get_error_message());
5871		- return '';
5872		- }
5873		-
5874		- $list_data = json_decode(wp_remote_retrieve_body($list_response), true);
5875		-
5876		- if (empty($list_data['vectors'])) {
5877		- //error_log('[MXCHAT-CHUNK] No chunk vectors found for URL: ' . $source_url);
5878		- return '';
5879		- }
5880		-
5881		- // Extract vector IDs
5882		- $vector_ids = array();
5883		- foreach ($list_data['vectors'] as $vector) {
5884		- if (isset($vector['id'])) {
5885		- $vector_ids[] = $vector['id'];
5886		- }
5887		- }
5888		-
5889		- if (empty($vector_ids)) {
5890		- return '';
5891		- }
5892		-
5893		- // Fetch all chunk content
5894		- $fetch_url = "https://{$host}/vectors/fetch";
5895		-
5896		- $fetch_body = array(
5897		- 'ids' => $vector_ids
5898		- );
5899		-
5900		- if (!empty($namespace)) {
5901		- $fetch_body['namespace'] = $namespace;
5902		- }
5903		-
5904		- $fetch_response = wp_remote_post($fetch_url, array(
5905		- 'headers' => array(
5906		- 'Api-Key' => $api_key,
5907		- 'accept' => 'application/json',
5908		- 'content-type' => 'application/json'
5909		- ),
5910		- 'body' => wp_json_encode($fetch_body),
5911		- 'timeout' => 30
5912		- ));
5913		-
5914		- if (is_wp_error($fetch_response)) {
5915		- //error_log('[MXCHAT-CHUNK] Fetch API error: ' . $fetch_response->get_error_message());
5916		- return '';
5917		- }
5918		-
5919		- $fetch_data = json_decode(wp_remote_retrieve_body($fetch_response), true);
5920		-
5921		- if (empty($fetch_data['vectors'])) {
5922		- return '';
5923		- }
5924		-
5925		- // Sort chunks by index and reassemble
5926		- $chunks = array();
5927		- foreach ($fetch_data['vectors'] as $id => $vector) {
5928		- $metadata = $vector['metadata'] ?? array();
5929		- $chunk_index = $metadata['chunk_index'] ?? 0;
5930		- $text = $metadata['text'] ?? '';
5931		-
5932		- // Store chunk with its index
5933		- $chunks[$chunk_index] = $text;
5934		- }
5935		-
5936		- // Sort by chunk index
5937		- ksort($chunks);
5938		-
5939		- // Apply chunk limit if specified
5940		- if ($max_chunks > 0 && count($chunks) > $max_chunks) {
5941		- $chunks = array_slice($chunks, 0, $max_chunks, true);
5942		- }
5943		-
5944		- // Store actual chunk count
5945		- $chunk_count = count($chunks);
5946		-
5947		- // Reassemble content
5948		- return implode("\n\n", $chunks);
5949		-}
5950		-
5951		-/**
5952		- * Search for relevant content using OpenAI Vector Store (File Search)
5953		- *
5954		- * @param string $user_query The user's query text
5955		- * @param string $bot_id The bot ID
5956		- * @param array $vectorstore_config Vector Store configuration
5957		- * @return string Formatted context string with references
5958		- */
5959		-private function find_relevant_content_openai_vectorstore($user_query, $bot_id = 'default', $vectorstore_config = array()) {
5960		- //error_log("MXCHAT DEBUG: find_relevant_content_openai_vectorstore called");
5961		- //error_log(" - bot_id: " . $bot_id);
5962		- //error_log(" - user_query length: " . strlen($user_query));
5963		-
5964		- // Get OpenAI API key
5965		- $mxchat_options = get_option('mxchat_options', array());
5966		- $api_key = $mxchat_options['api_key'] ?? '';
5967		-
5968		- // Reset vectorstore error tracking
5969		- $this->last_vectorstore_error = null;
5970		-
5971		- if (empty($api_key)) {
5972		- //error_log("MXCHAT DEBUG ERROR: OpenAI API key not configured");
5973		- $this->last_vectorstore_error = 'Vector Store search failed: OpenAI API key is not configured.';
5974		- $this->current_valid_urls = [];
5975		- return '';
5976		- }
5977		-
5978		- // Get Vector Store configuration
5979		- if (empty($vectorstore_config)) {
5980		- $vectorstore_config = $this->get_bot_vectorstore_config($bot_id);
5981		- }
5982		-
5983		- $vectorstore_ids_string = $vectorstore_config['vectorstore_ids'] ?? '';
5984		- $max_results = $vectorstore_config['max_results'] ?? 5;
5985		-
5986		- if (empty($vectorstore_ids_string)) {
5987		- //error_log("MXCHAT DEBUG ERROR: No Vector Store IDs configured");
5988		- $this->last_vectorstore_error = 'Vector Store search failed: No Vector Store IDs are configured for this bot.';
5989		- $this->current_valid_urls = [];
5990		- return '';
5991		- }
5992		-
5993		- // Parse Vector Store IDs
5994		- $vectorstore_ids = array_map('trim', explode(',', $vectorstore_ids_string));
5995		- $vectorstore_ids = array_filter($vectorstore_ids); // Remove empty values
5996		-
5997		- //error_log("MXCHAT DEBUG: Vector Store IDs: " . implode(', ', $vectorstore_ids));
5998		- //error_log("MXCHAT DEBUG: Max results: " . $max_results);
5999		-
6000		- // Initialize similarity analysis storage
6001		- $this->last_similarity_analysis = [
6002		- 'knowledge_base_type' => 'OpenAI Vector Store',
6003		- 'bot_id' => $bot_id,
6004		- 'vectorstore_ids' => $vectorstore_ids,
6005		- 'top_matches' => [],
6006		- 'threshold_used' => 0,
6007		- 'total_checked' => 0
6008		- ];
6009		-
6010		- $valid_urls = [];
6011		-
6012		- // Get the selected model
6013		- $bot_options = $this->get_bot_options($bot_id);
6014		- $current_options = !empty($bot_options) ? $bot_options : $mxchat_options;
6015		- $selected_model = $current_options['model'] ?? 'gpt-5.1-chat-latest';
6016		-
6017		- // Verify it's an OpenAI model
6018		- if (!$this->is_openai_chat_model($selected_model)) {
6019		- //error_log("MXCHAT DEBUG ERROR: Vector Store search requires OpenAI model. Current: " . $selected_model);
6020		- $this->last_vectorstore_error = 'Vector Store search requires an OpenAI model. Current model: ' . $selected_model;
6021		- $this->current_valid_urls = [];
6022		- return '';
6023		- }
6024		-
6025		- // Use OpenAI Responses API with file_search tool
6026		- $request_body = array(
6027		- 'model' => $selected_model,
6028		- 'input' => $user_query,
6029		- 'tools' => array(
6030		- array(
6031		- 'type' => 'file_search',
6032		- 'vector_store_ids' => $vectorstore_ids,
6033		- 'max_num_results' => intval($max_results)
6034		- )
6035		- ),
6036		- 'include' => array('output[*].file_search_call.search_results')
6037		- );
6038		-
6039		- //error_log("MXCHAT VECTORSTORE: ========== REQUEST START ==========");
6040		- //error_log("MXCHAT VECTORSTORE: Model: " . $selected_model);
6041		- //error_log("MXCHAT VECTORSTORE: Query: " . substr($user_query, 0, 200));
6042		- //error_log("MXCHAT VECTORSTORE: Vector Store IDs: " . implode(', ', $vectorstore_ids));
6043		- //error_log("MXCHAT VECTORSTORE: Max Results: " . $max_results);
6044		- //error_log("MXCHAT VECTORSTORE: Request body: " . wp_json_encode($request_body));
6045		-
6046		- $response = wp_remote_post('https://api.openai.com/v1/responses', array(
6047		- 'headers' => array(
6048		- 'Authorization' => 'Bearer ' . $api_key,
6049		- 'Content-Type' => 'application/json'
6050		- ),
6051		- 'body' => wp_json_encode($request_body),
6052		- 'timeout' => 60
6053		- ));
6054		-
6055		- if (is_wp_error($response)) {
6056		- //error_log("MXCHAT VECTORSTORE ERROR: WP Error: " . $response->get_error_message());
6057		- $this->last_vectorstore_error = 'Vector Store API request failed: ' . $response->get_error_message();
6058		- $this->current_valid_urls = [];
6059		- return '';
6060		- }
6061		-
6062		- $response_code = wp_remote_retrieve_response_code($response);
6063		- //error_log("MXCHAT VECTORSTORE: Response code: " . $response_code);
6064		-
6065		- $response_body = wp_remote_retrieve_body($response);
6066		- //error_log("MXCHAT VECTORSTORE: Raw response (first 2000 chars): " . substr($response_body, 0, 2000));
6067		-
6068		- if ($response_code !== 200) {
6069		- //error_log("MXCHAT VECTORSTORE ERROR: API error response: " . $response_body);
6070		- $api_error_detail = '';
6071		- $decoded_error = json_decode($response_body, true);
6072		- if (isset($decoded_error['error']['message'])) {
6073		- $api_error_detail = $decoded_error['error']['message'];
6074		- }
6075		- $this->last_vectorstore_error = 'Vector Store API returned HTTP ' . $response_code . ($api_error_detail ? ': ' . $api_error_detail : '');
6076		- $this->current_valid_urls = [];
6077		- return '';
6078		- }
6079		- $result = json_decode($response_body, true);
6080		-
6081		- if (json_last_error() !== JSON_ERROR_NONE) {
6082		- //error_log("MXCHAT VECTORSTORE ERROR: JSON decode error: " . json_last_error_msg());
6083		- $this->last_vectorstore_error = 'Vector Store response could not be parsed: ' . json_last_error_msg();
6084		- $this->current_valid_urls = [];
6085		- return '';
6086		- }
6087		-
6088		- // Debug: Log the structure of the result
6089		- //error_log("MXCHAT VECTORSTORE: Result keys: " . implode(', ', array_keys($result)));
6090		- if (isset($result['output'])) {
6091		- //error_log("MXCHAT VECTORSTORE: Output count: " . count($result['output']));
6092		- foreach ($result['output'] as $idx => $out) {
6093		- //error_log("MXCHAT VECTORSTORE: Output[$idx] type: " . ($out['type'] ?? 'unknown'));
6094		- //error_log("MXCHAT VECTORSTORE: Output[$idx] keys: " . implode(', ', array_keys($out)));
6095		- }
6096		- } else {
6097		- //error_log("MXCHAT VECTORSTORE: No 'output' key in result!");
6098		- }
6099		-
6100		- // Extract file search results from the response
6101		- $content = '';
6102		- $matches_used = 0;
6103		- $all_matches = [];
6104		-
6105		- // The Responses API returns output array with tool results
6106		- if (isset($result['output']) && is_array($result['output'])) {
6107		- foreach ($result['output'] as $output_item) {
6108		- // Look for file_search_call results
6109		- if (isset($output_item['type']) && $output_item['type'] === 'file_search_call') {
6110		- //error_log("MXCHAT VECTORSTORE: Found file_search_call output item");
6111		- //error_log("MXCHAT VECTORSTORE: file_search_call keys: " . implode(', ', array_keys($output_item)));
6112		-
6113		- // Check for search_results in the output item directly
6114		- $search_results = $output_item['search_results'] ?? $output_item['results'] ?? [];
6115		- //error_log("MXCHAT VECTORSTORE: Search results count: " . count($search_results));
6116		-
6117		- if (empty($search_results)) {
6118		- //error_log("MXCHAT VECTORSTORE: No search results found in file_search_call");
6119		- //error_log("MXCHAT VECTORSTORE: file_search_call content: " . wp_json_encode($output_item));
6120		- }
6121		-
6122		- foreach ($search_results as $index => $search_result) {
6123		- $filename = $search_result['filename'] ?? '';
6124		- $score = $search_result['score'] ?? 0;
6125		- $text_content = '';
6126		-
6127		- // Extract text content from the result
6128		- // The text can be directly on the result OR nested under content array
6129		- if (isset($search_result['text']) && !empty($search_result['text'])) {
6130		- // Direct text field (OpenAI's actual format)
6131		- $text_content = $search_result['text'];
6132		- //error_log("MXCHAT VECTORSTORE: Found text directly on result[$index], length: " . strlen($text_content));
6133		- } elseif (isset($search_result['content']) && is_array($search_result['content'])) {
6134		- // Nested content array format
6135		- foreach ($search_result['content'] as $content_item) {
6136		- if (isset($content_item['text'])) {
6137		- $text_content .= $content_item['text'] . "\n";
6138		- }
6139		- }
6140		- //error_log("MXCHAT VECTORSTORE: Found text in content array for result[$index], length: " . strlen($text_content));
6141		- } else {
6142		- //error_log("MXCHAT VECTORSTORE: No text found for result[$index]. Keys: " . implode(', ', array_keys($search_result)));
6143		- }
6144		-
6145		- if (!empty($text_content)) {
6146		- $content .= "## Reference " . ($matches_used + 1) . " ##\n";
6147		- $content .= trim($text_content) . "\n\n";
6148		-
6149		- if (!empty($filename)) {
6150		- $content .= "Source: " . $filename . "\n\n";
6151		- }
6152		-
6153		- // Extract URLs from content
6154		- preg_match_all(
6155		- '#\bhttps?://[^\s<>"\']+#i',
6156		- $text_content,
6157		- $content_urls
6158		- );
6159		- if (!empty($content_urls[0])) {
6160		- $valid_urls = array_merge($valid_urls, $content_urls[0]);
6161		- }
6162		-
6163		- $matches_used++;
6164		- }
6165		-
6166		- // Store for similarity analysis
6167		- $all_matches[] = [
6168		- 'document_id' => $filename ?: ('result_' . $index),
6169		- 'similarity' => $score,
6170		- 'similarity_percentage' => round($score * 100, 2),
6171		- 'above_threshold' => true,
6172		- 'source_display' => $filename,
6173		- 'content_preview' => substr(strip_tags($text_content), 0, 100) . '...',
6174		- 'used_for_context' => true,
6175		- 'role_restriction' => 'public',
6176		- 'has_access' => true,
6177		- 'filtered_out' => false
6178		- ];
6179		- }
6180		- }
6181		-
6182		- // Also check for message content with annotations (citations)
6183		- if (isset($output_item['type']) && $output_item['type'] === 'message') {
6184		- if (isset($output_item['content']) && is_array($output_item['content'])) {
6185		- foreach ($output_item['content'] as $content_block) {
6186		- if (isset($content_block['annotations']) && is_array($content_block['annotations'])) {
6187		- foreach ($content_block['annotations'] as $annotation) {
6188		- if (isset($annotation['filename'])) {
6189		- $filename = $annotation['filename'];
6190		- $score = $annotation['score'] ?? 0;
6191		- $text_content = '';
6192		-
6193		- if (isset($annotation['content']) && is_array($annotation['content'])) {
6194		- foreach ($annotation['content'] as $ann_content) {
6195		- if (isset($ann_content['text'])) {
6196		- $text_content .= $ann_content['text'] . "\n";
6197		- }
6198		- }
6199		- }
6200		-
6201		- if (!empty($text_content) && $matches_used < $max_results) {
6202		- $content .= "## Reference " . ($matches_used + 1) . " ##\n";
6203		- $content .= trim($text_content) . "\n\n";
6204		- $content .= "Source: " . $filename . "\n\n";
6205		-
6206		- preg_match_all(
6207		- '#\bhttps?://[^\s<>"\']+#i',
6208		- $text_content,
6209		- $content_urls
6210		- );
6211		- if (!empty($content_urls[0])) {
6212		- $valid_urls = array_merge($valid_urls, $content_urls[0]);
6213		- }
6214		-
6215		- $matches_used++;
6216		-
6217		- $all_matches[] = [
6218		- 'document_id' => $filename,
6219		- 'similarity' => $score,
6220		- 'similarity_percentage' => round($score * 100, 2),
6221		- 'above_threshold' => true,
6222		- 'source_display' => $filename,
6223		- 'content_preview' => substr(strip_tags($text_content), 0, 100) . '...',
6224		- 'used_for_context' => true,
6225		- 'role_restriction' => 'public',
6226		- 'has_access' => true,
6227		- 'filtered_out' => false
6228		- ];
6229		- }
6230		- }
6231		- }
6232		- }
6233		- }
6234		- }
6235		- }
6236		- }
6237		- }
6238		-
6239		- // Store for testing panel
6240		- $this->last_similarity_analysis['top_matches'] = $all_matches;
6241		- $this->last_similarity_analysis['total_checked'] = count($all_matches);
6242		-
6243		- // Store unique valid URLs for validation
6244		- $this->current_valid_urls = array_unique($valid_urls);
6245		-
6246		- // Allow add-ons to act on similarity results (e.g. WooCommerce product card display)
6247		- do_action('mxchat_similarity_results', $this->last_similarity_analysis['top_matches'], $bot_id);
6248		-
6249		- //error_log("MXCHAT VECTORSTORE: ========== SEARCH COMPLETE ==========");
6250		- //error_log("MXCHAT VECTORSTORE: Matches used: " . $matches_used);
6251		- //error_log("MXCHAT VECTORSTORE: All matches count: " . count($all_matches));
6252		- //error_log("MXCHAT VECTORSTORE: Content length: " . strlen($content));
6253		- if ($matches_used > 0) {
6254		- //error_log("MXCHAT VECTORSTORE: Content preview: " . substr($content, 0, 500));
6255		- }
6256		-
6257		- // Check if citation links are enabled
6258		- $citation_links_enabled = ($mxchat_options['citation_links_toggle'] ?? 'on') === 'on';
6259		-
6260		- // Add response guidelines
6261		- if ($matches_used === 0) {
6262		- //error_log("MXCHAT VECTORSTORE: No matches found - returning empty reference message");
6263		- $content = "No reference information was found for this query.\n\n";
6264		- } else {
6265		- // Build response guidelines based on citation links setting
6266		- $content .= "\n## Response Guidelines ##\n" .
6267		- "You are an AI Chatbot. Answer naturally and helpfully using only the information from the references above. " .
6268		- "Be conversational and friendly, but never mention your knowledge base or training data. " .
6269		- "If you don't have specific information or are uncertain about any details, it's always " .
6270		- "better to honestly say you don't know rather than making up or guessing at answers. " .
6271		- "When information is incomplete, let them know you are unsure.\n\n";
6272		-
6273		- // Only add hyperlink instructions if citation links are enabled
6274		- if ($citation_links_enabled) {
6275		- $content .= "CRITICAL: When creating hyperlinks, always use proper markdown format with descriptive text: " .
6276		- "[descriptive text](url). NEVER use empty brackets like [](url). The text in brackets must describe what the link is about.";
6277		- } else {
6278		- $content .= "IMPORTANT: Do not include any citation links, source URLs, or hyperlinks in your responses. " .
6279		- "Simply provide helpful answers based on the reference information without citing sources.";
6280		- }
6281		- }
6282		-
6283		- //error_log("MXCHAT DEBUG: Vector Store search complete. Matches used: " . $matches_used);
6284		-
6285		- return trim($content);
6286		-}
6287		-
6288		-/**
6289		- * Check if the given model is an OpenAI chat model
6290		- *
6291		- * @param string $model The model ID
6292		- * @return bool True if it's an OpenAI model
6293		- */
6294		-private function is_openai_chat_model($model) {
6295		- $openai_prefixes = array('gpt-', 'o1-', 'o3-');
6296		- foreach ($openai_prefixes as $prefix) {
6297		- if (strpos($model, $prefix) === 0) {
6298		- return true;
6299		- }
6300		- }
6301		- return false;
6302		-}
6303		-
6304		-/**
6305		- * Get bot-specific Vector Store configuration
6306		- *
6307		- * @param string $bot_id The bot ID
6308		- * @return array Configuration array
6309		- */
6310		-private function get_bot_vectorstore_config($bot_id = 'default') {
6311		- $vectorstore_options = get_option('mxchat_openai_vectorstore_options', array());
6312		-
6313		- // Default global settings
6314		- $default_config = array(
6315		- 'use_vectorstore' => ($vectorstore_options['mxchat_use_openai_vectorstore'] ?? '0') === '1',
6316		- 'vectorstore_ids' => $vectorstore_options['mxchat_vectorstore_ids'] ?? '',
6317		- 'max_results' => $vectorstore_options['mxchat_vectorstore_max_results'] ?? 5
6318		- );
6319		-
6320		- // Allow multi-bot plugin to override with bot-specific settings
6321		- $bot_config = apply_filters('mxchat_get_bot_vectorstore_config', $default_config, $bot_id);
6322		-
6323		- // Preserve max_results from global settings if not set in bot config
6324		- if (!isset($bot_config['max_results'])) {
6325		- $bot_config['max_results'] = $default_config['max_results'];
6326		- }
6327		-
6328		- return $bot_config;
6329		-}
6330		-
6331	4044	private function mxchat_find_relevant_products($user_embedding) {
6332	4045	//error_log('MXChat Vector Search: Starting product search...');
6333	4046
6334	4047	// Retrieve the add-on settings from the database
		@@ -6349,75 +4062,73 @@
6349	4062	}
6350	4063	private function find_relevant_products_wordpress($user_embedding) {
6351	4064	global $wpdb;
6352	4065	$system_prompt_table = $wpdb->prefix . 'mxchat_system_prompt_content';
	4066	+ $cache_key = 'mxchat_system_prompt_embeddings';
	4067	+ $batch_size = 500;
6353	4068
6354		- if (!is_array($user_embedding)) {
6355		- return '';
6356		- }
	4069	+ // Original WordPress database search logic
	4070	+ // [Previous implementation remains the same]
	4071	+ $embeddings = wp_cache_get($cache_key, 'mxchat_system_prompts');
	4072	+ if ($embeddings === false) {
	4073	+ $embeddings = [];
	4074	+ $offset = 0;
6357	4075
6358		- // Streaming top-K pass: scan rows in small batches, keep only the top 3
6359		- // results above the similarity threshold. Peak memory is bounded by
6360		- // $batch_size embedding rows plus a 3-element top list.
6361		- $batch_size = 250;
6362		- $similarity_threshold = 0.85;
6363		- $top_k = 3;
6364		- $top_results = [];
6365		- $offset = 0;
	4076	+ do {
	4077	+ $query = $wpdb->prepare(
	4078	+ "SELECT id, embedding_vector
	4079	+ FROM {$system_prompt_table}
	4080	+ LIMIT %d OFFSET %d",
	4081	+ $batch_size,
	4082	+ $offset
	4083	+ );
6366	4084
6367		- do {
6368		- $batch = $wpdb->get_results($wpdb->prepare(
6369		- "SELECT id, embedding_vector
6370		- FROM {$system_prompt_table}
6371		- LIMIT %d OFFSET %d",
6372		- $batch_size,
6373		- $offset
6374		- ));
	4085	+ $batch = $wpdb->get_results($query);
	4086	+ if (empty($batch)) {
	4087	+ break;
	4088	+ }
6375	4089
6376		- if (empty($batch)) {
6377		- break;
6378		- }
	4090	+ $embeddings = array_merge($embeddings, $batch);
	4091	+ $offset += $batch_size;
6379	4092
6380		- foreach ($batch as $row) {
6381		- $database_embedding = $row->embedding_vector
6382		- ? unserialize($row->embedding_vector, ['allowed_classes' => false])
6383		- : null;
	4093	+ unset($batch);
6384	4094
6385		- if (!is_array($database_embedding)) {
6386		- unset($database_embedding);
6387		- continue;
6388		- }
	4095	+ } while (true);
6389	4096
	4097	+ if (empty($embeddings)) {
	4098	+ return '';
	4099	+ }
	4100	+ wp_cache_set($cache_key, $embeddings, 'mxchat_system_prompts', 3600);
	4101	+ }
	4102	+
	4103	+ $relevant_results = [];
	4104	+ foreach ($embeddings as $embedding) {
	4105	+ $database_embedding = $embedding->embedding_vector
	4106	+ ? unserialize($embedding->embedding_vector, ['allowed_classes' => false])
	4107	+ : null;
	4108	+ if (is_array($database_embedding) && is_array($user_embedding)) {
6390	4109	$similarity = $this->mxchat_calculate_cosine_similarity($user_embedding, $database_embedding);
6391		- unset($database_embedding);
6392		-
6393		- if ($similarity < $similarity_threshold) {
6394		- continue;
6395		- }
6396		-
6397		- // Insert into bounded top-K (kept sorted descending)
6398		- if (count($top_results) < $top_k) {
6399		- $top_results[] = ['id' => $row->id, 'similarity' => $similarity];
6400		- usort($top_results, function ($a, $b) {
6401		- return $b['similarity'] <=> $a['similarity'];
6402		- });
6403		- } elseif ($similarity > $top_results[$top_k - 1]['similarity']) {
6404		- $top_results[$top_k - 1] = ['id' => $row->id, 'similarity' => $similarity];
6405		- usort($top_results, function ($a, $b) {
6406		- return $b['similarity'] <=> $a['similarity'];
6407		- });
6408		- }
	4110	+ $relevant_results[] = [
	4111	+ 'id' => $embedding->id,
	4112	+ 'similarity' => $similarity
	4113	+ ];
6409	4114	}
	4115	+ unset($database_embedding);
	4116	+ }
6410	4117
6411		- unset($batch);
6412		- $offset += $batch_size;
6413		- } while (true);
	4118	+ // Use fixed threshold for products
	4119	+ $similarity_threshold = 0.85;
6414	4120
6415		- if (empty($top_results)) {
6416		- return '';
6417		- }
	4121	+ $relevant_results = array_filter($relevant_results, function ($result) use ($similarity_threshold) {
	4122	+ return $result['similarity'] >= $similarity_threshold;
	4123	+ });
	4124	+ usort($relevant_results, function ($a, $b) {
	4125	+ return $b['similarity'] <=> $a['similarity'];
	4126	+ });
6418	4127
	4128	+ $top_results = array_slice($relevant_results, 0, 5);
6419	4129	$content = '';
	4130	+
6420	4131	foreach ($top_results as $result) {
6421	4132	$chunk_content = $this->fetch_content_with_product_links($result['id']);
6422	4133	$content .= $chunk_content . "\n\n";
6423	4134	}
		@@ -6526,61 +4237,23 @@
6526	4237
6527	4238	/**
6528	4239	* Get system instructions for a specific bot or default
6529	4240	* Checks for multi-bot add-on and uses bot-specific instructions if available
6530		- * Automatically strips URLs if citation links are disabled
6531		- * Replaces {visitor_name} placeholder with actual visitor name if available
6532		- *
6533		- * @param string $bot_id The bot ID to get instructions for
6534		- * @param string $session_id Optional session ID to lookup visitor name
6535	4241	*/
6536		-private function get_system_instructions($bot_id = 'default', $session_id = '') {
6537		- $instructions = '';
6538		-
	4242	+private function get_system_instructions($bot_id = 'default') {
6539	4243	// Check if multi-bot add-on is active
6540	4244	if (class_exists('MxChat_Multi_Bot_Core_Manager') && $bot_id !== 'default') {
6541	4245	// Get bot-specific options from multi-bot add-on
6542	4246	$bot_options = apply_filters('mxchat_get_bot_options', array(), $bot_id);
6543		-
	4247	+
6544	4248	// If bot has custom system instructions, use those
6545	4249	if (!empty($bot_options['system_prompt_instructions'])) {
6546		- $instructions = $bot_options['system_prompt_instructions'];
	4250	+ return $bot_options['system_prompt_instructions'];
6547	4251	}
6548	4252	}
6549		-
	4253	+
6550	4254	// Fall back to default system instructions
6551		- if (empty($instructions)) {
6552		- $instructions = isset($this->options['system_prompt_instructions']) ? $this->options['system_prompt_instructions'] : '';
6553		- }
6554		-
6555		- // Check if citation links are disabled - if so, strip URLs from instructions
6556		- $fresh_options = get_option('mxchat_options', []);
6557		- $citation_links_enabled = isset($fresh_options['citation_links_toggle']) ? ($fresh_options['citation_links_toggle'] === 'on') : true;
6558		-
6559		- if (!$citation_links_enabled && !empty($instructions)) {
6560		- $instructions = preg_replace('#\bhttps?://[^\s<>"\']+#i', '', $instructions);
6561		- $instructions = preg_replace('/\s+/', ' ', trim($instructions)); // Clean up extra spaces
6562		- }
6563		-
6564		- // Replace {visitor_name} placeholder with actual visitor name if available
6565		- if (!empty($instructions) && !empty($session_id) && stripos($instructions, '{visitor_name}') !== false) {
6566		- $name_option_key = "mxchat_name_{$session_id}";
6567		- $visitor_name = get_option($name_option_key, '');
6568		-
6569		- if (!empty($visitor_name)) {
6570		- $instructions = str_ireplace('{visitor_name}', sanitize_text_field($visitor_name), $instructions);
6571		- } else {
6572		- // Remove placeholder if no name is available
6573		- $instructions = str_ireplace('{visitor_name}', '', $instructions);
6574		- $instructions = preg_replace('/\s{2,}/', ' ', trim($instructions)); // Clean up extra spaces
6575		- }
6576		- }
6577		-
6578		- // Allow developers to filter system instructions and process shortcodes
6579		- $instructions = apply_filters('mxchat_system_instructions', $instructions, $bot_id, $session_id);
6580		- $instructions = do_shortcode($instructions);
6581		-
6582		- return $instructions;
	4255	+ return isset($this->options['system_prompt_instructions']) ? $this->options['system_prompt_instructions'] : '';
6583	4256	}
6584	4257	/**
6585	4258	* Get the current bot ID from session or request context
6586	4259	*/
		@@ -6600,9 +4273,9 @@
6600	4273
6601	4274	// Fall back to default
6602	4275	return 'default';
6603	4276	}
6604		-private function mxchat_generate_response($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, $selected_model = 'gpt-5.1-chat-latest') {
	4277	+private function mxchat_generate_response($relevant_content, $api_key, $xai_api_key, $claude_api_key, $deepseek_api_key, $gemini_api_key, $conversation_history, $streaming = false, $session_id = '', $testing_data = null, $selected_model = 'gpt-4o') {
6605	4278	try {
6606	4279	if (!$relevant_content) {
6607	4280	$error_response = [
6608	4281	'error' => esc_html__("I couldn't find relevant information on that topic.", 'mxchat'),
		@@ -6608,73 +4281,22 @@
6608	4281	'error' => esc_html__("I couldn't find relevant information on that topic.", 'mxchat'),
6609	4282	'error_code' => 'no_relevant_content'
6610	4283	];
6611	4284
	4285	+ // Add testing data to error response if available
6612	4286	if ($testing_data !== null) {
6613	4287	$error_response['testing_data'] = $testing_data;
	4288	+ //error_log("MxChat Testing: Added testing data to no_relevant_content error");
6614	4289	}
6615	4290
6616	4291	return $error_response;
6617	4292	}
6618	4293
	4294	+ // Ensure conversation_history is an array
6619	4295	if (!is_array($conversation_history)) {
6620	4296	$conversation_history = array();
6621	4297	}
6622	4298
6623		- // Check if this is an OpenRouter model
6624		- if ($selected_model === 'openrouter') {
6625		- // Get the actual OpenRouter model from options
6626		- $openrouter_selected_model = $this->options['openrouter_selected_model'] ?? '';
6627		-
6628		- if (empty($openrouter_selected_model)) {
6629		- $error_response = [
6630		- 'error' => esc_html__('No OpenRouter model selected. Please select a model in settings.', 'mxchat'),
6631		- 'error_code' => 'no_openrouter_model_selected'
6632		- ];
6633		- if ($testing_data !== null) {
6634		- $error_response['testing_data'] = $testing_data;
6635		- }
6636		- return $error_response;
6637		- }
6638		-
6639		- if (empty($openrouter_api_key)) {
6640		- $error_response = [
6641		- 'error' => esc_html__('OpenRouter API key is not configured', 'mxchat'),
6642		- 'error_code' => 'missing_openrouter_api_key'
6643		- ];
6644		- if ($testing_data !== null) {
6645		- $error_response['testing_data'] = $testing_data;
6646		- }
6647		- return $error_response;
6648		- }
6649		-
6650		- if ($streaming) {
6651		- return $this->mxchat_generate_response_openrouter_stream(
6652		- $openrouter_selected_model,
6653		- $openrouter_api_key,
6654		- $conversation_history,
6655		- $relevant_content,
6656		- $session_id,
6657		- $testing_data
6658		- );
6659		- } else {
6660		- $response = $this->mxchat_generate_response_openrouter(
6661		- $openrouter_selected_model,
6662		- $openrouter_api_key,
6663		- $conversation_history,
6664		- $relevant_content
6665		- );
6666		- }
6667		-
6668		- if (is_array($response) && isset($response['error'])) {
6669		- if ($testing_data !== null) {
6670		- $response['testing_data'] = $testing_data;
6671		- }
6672		- return $response;
6673		- }
6674		-
6675		- return $response;
6676		- }
6677	4299
6678	4300	// Extract model prefix to determine the provider
6679	4301	$model_parts = explode('-', $selected_model);
6680	4302	$provider = strtolower($model_parts[0]);
		@@ -6717,9 +4339,9 @@
6717	4339	$claude_api_key,
6718	4340	$conversation_history,
6719	4341	$relevant_content,
6720	4342	$session_id,
6721		- $testing_data
	4343	+ $testing_data // Pass testing data
6722	4344	);
6723	4345	} else {
6724	4346	$response = $this->mxchat_generate_response_claude(
6725	4347	$selected_model,
		@@ -6747,9 +4369,9 @@
6747	4369	$xai_api_key,
6748	4370	$conversation_history,
6749	4371	$relevant_content,
6750	4372	$session_id,
6751		- $testing_data
	4373	+ $testing_data // Pass testing data
6752	4374	);
6753	4375	} else {
6754	4376	$response = $this->mxchat_generate_response_xai(
6755	4377	$selected_model,
		@@ -6777,9 +4399,9 @@
6777	4399	$deepseek_api_key,
6778	4400	$conversation_history,
6779	4401	$relevant_content,
6780	4402	$session_id,
6781		- $testing_data
	4403	+ $testing_data // Pass testing data
6782	4404	);
6783	4405	} else {
6784	4406	$response = $this->mxchat_generate_response_deepseek(
6785	4407	$selected_model,
		@@ -6789,38 +4411,8 @@
6789	4411	);
6790	4412	}
6791	4413	break;
6792	4414
6793		- case 'custom':
6794		- // Custom (OpenAI-compatible) provider — Ollama, LM Studio, vLLM, llama.cpp, Azure OpenAI
6795		- $cp_base_url = isset($this->options['custom_provider_base_url']) ? trim((string) $this->options['custom_provider_base_url']) : '';
6796		- if (empty($cp_base_url)) {
6797		- $error_response = [
6798		- 'error' => esc_html__('Custom provider is not configured. Set Base URL in MxChat → API Keys → Custom Provider.', 'mxchat'),
6799		- 'error_code' => 'missing_custom_provider_base_url'
6800		- ];
6801		- if ($testing_data !== null) {
6802		- $error_response['testing_data'] = $testing_data;
6803		- }
6804		- return $error_response;
6805		- }
6806		- if ($streaming) {
6807		- return $this->mxchat_generate_response_custom_stream(
6808		- $selected_model,
6809		- $conversation_history,
6810		- $relevant_content,
6811		- $session_id,
6812		- $testing_data
6813		- );
6814		- } else {
6815		- $response = $this->mxchat_generate_response_custom(
6816		- $selected_model,
6817		- $conversation_history,
6818		- $relevant_content
6819		- );
6820		- }
6821		- break;
6822		-
6823	4415	case 'gpt':
6824	4416	case 'o1':
6825	4417	if (empty($api_key)) {
6826	4418	$error_response = [
		@@ -6831,27 +4423,9 @@
6831	4423	$error_response['testing_data'] = $testing_data;
6832	4424	}
6833	4425	return $error_response;
6834	4426	}
6835		-
6836		- // Check if web search is enabled for this OpenAI model
6837		- $web_search_enabled = isset($this->options['enable_web_search']) && $this->options['enable_web_search'] === 'on';
6838		- // Models that don't support web search
6839		- $unsupported_web_search_models = array('gpt-4.1-nano');
6840		- $model_supports_web_search = !in_array($selected_model, $unsupported_web_search_models);
6841		-
6842		- if ($web_search_enabled && $model_supports_web_search) {
6843		- // Use Responses API (required for some models, or when web search is enabled)
6844		- return $this->mxchat_generate_response_openai_web_search(
6845		- $selected_model,
6846		- $api_key,
6847		- $conversation_history,
6848		- $relevant_content,
6849		- $session_id,
6850		- $testing_data,
6851		- $streaming
6852		- );
6853		- } elseif ($streaming) {
	4427	+ if ($streaming) {
6854	4428	return $this->mxchat_generate_response_openai_stream(
6855	4429	$selected_model,
6856	4430	$api_key,
6857	4431	$conversation_history,
		@@ -6856,9 +4430,9 @@
6856	4430	$api_key,
6857	4431	$conversation_history,
6858	4432	$relevant_content,
6859	4433	$session_id,
6860		- $testing_data
	4434	+ $testing_data // Pass testing data
6861	4435	);
6862	4436	} else {
6863	4437	$response = $this->mxchat_generate_response_openai(
6864	4438	$selected_model,
		@@ -6869,8 +4443,9 @@
6869	4443	}
6870	4444	break;
6871	4445
6872	4446	default:
	4447	+ // Default to OpenAI for custom models or unrecognized prefixes
6873	4448	if (empty($api_key)) {
6874	4449	$error_response = [
6875	4450	'error' => esc_html__('OpenAI API key is not configured', 'mxchat'),
6876	4451	'error_code' => 'missing_openai_api_key'
		@@ -6879,25 +4454,9 @@
6879	4454	$error_response['testing_data'] = $testing_data;
6880	4455	}
6881	4456	return $error_response;
6882	4457	}
6883		-
6884		- // Check if web search is enabled (default case also handles OpenAI models)
6885		- $web_search_enabled = isset($this->options['enable_web_search']) && $this->options['enable_web_search'] === 'on';
6886		- $unsupported_web_search_models = array('gpt-4.1-nano');
6887		- $model_supports_web_search = !in_array($selected_model, $unsupported_web_search_models);
6888		-
6889		- if ($web_search_enabled && $model_supports_web_search) {
6890		- return $this->mxchat_generate_response_openai_web_search(
6891		- $selected_model,
6892		- $api_key,
6893		- $conversation_history,
6894		- $relevant_content,
6895		- $session_id,
6896		- $testing_data,
6897		- $streaming
6898		- );
6899		- } elseif ($streaming) {
	4458	+ if ($streaming) {
6900	4459	return $this->mxchat_generate_response_openai_stream(
6901	4460	$selected_model,
6902	4461	$api_key,
6903	4462	$conversation_history,
		@@ -6902,9 +4461,9 @@
6902	4461	$api_key,
6903	4462	$conversation_history,
6904	4463	$relevant_content,
6905	4464	$session_id,
6906		- $testing_data
	4465	+ $testing_data // Pass testing data
6907	4466	);
6908	4467	} else {
6909	4468	$response = $this->mxchat_generate_response_openai(
6910	4469	$selected_model,
		@@ -6915,18 +4474,24 @@
6915	4474	}
6916	4475	break;
6917	4476	}
6918	4477
	4478	+ // Check if the response is an error array from the provider-specific function
6919	4479	if (is_array($response) && isset($response['error'])) {
	4480	+ // Add testing data to error response if available
6920	4481	if ($testing_data !== null) {
6921	4482	$response['testing_data'] = $testing_data;
	4483	+ //error_log("MxChat Testing: Added testing data to provider error response");
6922	4484	}
6923		- return $response;
	4485	+ return $response; // Pass through the error with testing data
6924	4486	}
6925	4487
	4488	+ // For successful non-streaming responses, we don't add testing data here
	4489	+ // because it will be added in the main handler
6926	4490	return $response;
6927	4491
6928	4492	} catch (Exception $e) {
	4493	+ //error_log('MXChat Error: ' . $e->getMessage());
6929	4494	$error_response = [
6930	4495	'error' => sprintf(esc_html__('An error occurred: %s', 'mxchat'), esc_html($e->getMessage())),
6931	4496	'error_code' => 'system_exception',
6932	4497	'exception_details' => $e->getMessage()
		@@ -6931,229 +4496,24 @@
6931	4496	'error_code' => 'system_exception',
6932	4497	'exception_details' => $e->getMessage()
6933	4498	];
6934	4499
	4500	+ // Add testing data to exception response if available
6935	4501	if ($testing_data !== null) {
6936	4502	$error_response['testing_data'] = $testing_data;
	4503	+ //error_log("MxChat Testing: Added testing data to exception response");
6937	4504	}
6938	4505
6939	4506	return $error_response;
6940	4507	}
6941	4508	}
6942		-private function mxchat_generate_response_openrouter_stream($selected_model, $openrouter_api_key, $conversation_history, $relevant_content, $session_id, $testing_data = null) {
6943		- try {
6944		- $bot_id = $this->get_current_bot_id($session_id);
6945		- $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
6946		-
6947		- if (!is_array($conversation_history)) {
6948		- $conversation_history = array();
6949		- }
6950	4509
6951		- $formatted_conversation = array();
6952		-
6953		- $formatted_conversation[] = array(
6954		- 'role' => 'system',
6955		- 'content' => $system_prompt_instructions . " " . $relevant_content
6956		- );
6957		-
6958		- foreach ($conversation_history as $message) {
6959		- if (is_array($message) && isset($message['role']) && isset($message['content'])) {
6960		- $role = $message['role'];
6961		- if ($role === 'bot' || $role === 'agent') {
6962		- $role = 'assistant';
6963		- }
6964		- if (!in_array($role, ['system', 'assistant', 'user'])) {
6965		- $role = 'user';
6966		- }
6967		- $formatted_conversation[] = array(
6968		- 'role' => $role,
6969		- 'content' => $message['content']
6970		- );
6971		- }
6972		- }
6973		-
6974		- if (headers_sent() || !function_exists('curl_init')) {
6975		- $regular_response = $this->mxchat_generate_response_openrouter(
6976		- $selected_model,
6977		- $openrouter_api_key,
6978		- $conversation_history,
6979		- $relevant_content
6980		- );
6981		-
6982		- // Save bot response to transcript
6983		- if (!empty($regular_response) && !empty($session_id)) {
6984		- $this->mxchat_save_chat_message($session_id, 'bot', $regular_response);
6985		- }
6986		-
6987		- $response_data = [
6988		- 'text' => $regular_response,
6989		- 'html' => '',
6990		- 'session_id' => $session_id
6991		- ];
6992		-
6993		- if ($testing_data !== null) {
6994		- $response_data['testing_data'] = $testing_data;
6995		- }
6996		-
6997		- header('Content-Type: application/json');
6998		- echo json_encode($response_data);
6999		- return true;
7000		- }
7001		-
7002		- $body = json_encode([
7003		- 'model' => $selected_model,
7004		- 'messages' => $formatted_conversation,
7005		- 'temperature' => 1,
7006		- 'stream' => true
7007		- ]);
7008		-
7009		- // Setup streaming headers now that we know we're actually streaming
7010		- $this->setup_streaming_headers();
7011		-
7012		- $ch = curl_init();
7013		- curl_setopt($ch, CURLOPT_URL, 'https://openrouter.ai/api/v1/chat/completions');
7014		- curl_setopt($ch, CURLOPT_RETURNTRANSFER, false);
7015		- curl_setopt($ch, CURLOPT_POST, true);
7016		- curl_setopt($ch, CURLOPT_POSTFIELDS, $body);
7017		- curl_setopt($ch, CURLOPT_HTTPHEADER, array(
7018		- 'Content-Type: application/json',
7019		- 'Authorization: Bearer ' . $openrouter_api_key,
7020		- 'HTTP-Referer: ' . home_url(),
7021		- 'X-Title: ' . get_bloginfo('name')
7022		- ));
7023		- curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
7024		- curl_setopt($ch, CURLOPT_TIMEOUT, 60);
7025		-
7026		- $full_response = '';
7027		- $stream_started = false;
7028		- $buffer = '';
7029		-
7030		- curl_setopt($ch, CURLOPT_WRITEFUNCTION, function($ch, $data) use (&$full_response, &$stream_started, &$buffer, $testing_data) {
7031		- if (!$stream_started && $testing_data !== null) {
7032		- echo "data: " . json_encode(['testing_data' => $testing_data]) . "\n\n";
7033		- flush();
7034		- $stream_started = true;
7035		- }
7036		-
7037		- $buffer .= $data;
7038		- $lines = explode("\n", $buffer);
7039		- $buffer = array_pop($lines);
7040		-
7041		- foreach ($lines as $line) {
7042		- if (trim($line) === '') {
7043		- continue;
7044		- }
7045		-
7046		- if (strpos($line, 'data: ') !== 0) {
7047		- continue;
7048		- }
7049		-
7050		- $json_str = substr($line, 6);
7051		-
7052		- if (trim($json_str) === '[DONE]') {
7053		- echo "data: [DONE]\n\n";
7054		- flush();
7055		- continue;
7056		- }
7057		-
7058		- $json = json_decode(trim($json_str), true);
7059		- if ($json && isset($json['choices'][0]['delta']['content'])) {
7060		- $content = $json['choices'][0]['delta']['content'];
7061		- $full_response .= $content;
7062		-
7063		- echo "data: " . json_encode(['content' => $content]) . "\n\n";
7064		- flush();
7065		- }
7066		- }
7067		-
7068		- return strlen($data);
7069		- });
7070		-
7071		- $response = curl_exec($ch);
7072		- $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
7073		-
7074		- if (curl_errno($ch) || $http_code !== 200) {
7075		- curl_close($ch);
7076		-
7077		- $regular_response = $this->mxchat_generate_response_openrouter(
7078		- $selected_model,
7079		- $openrouter_api_key,
7080		- $conversation_history,
7081		- $relevant_content
7082		- );
7083		-
7084		- $response_data = [
7085		- 'text' => $regular_response,
7086		- 'html' => '',
7087		- 'session_id' => $session_id
7088		- ];
7089		-
7090		- if ($testing_data !== null) {
7091		- $response_data['testing_data'] = $testing_data;
7092		- }
7093		-
7094		- header('Content-Type: application/json');
7095		- echo json_encode($response_data);
7096		- return true;
7097		- }
7098		-
7099		- curl_close($ch);
7100		-
7101		- if (!empty($full_response) && !empty($session_id)) {
7102		- // Prepare RAG context for streaming response
7103		- $rag_context_for_storage = null;
7104		- $has_rag_data = $this->last_similarity_analysis !== null && !empty($this->last_similarity_analysis['top_matches']);
7105		- $has_action_data = isset($this->last_action_analysis) && !empty($this->last_action_analysis);
7106		-
7107		- if ($has_rag_data || $has_action_data) {
7108		- $rag_context_for_storage = [];
7109		-
7110		- if ($has_rag_data) {
7111		- $rag_context_for_storage['top_matches'] = $this->last_similarity_analysis['top_matches'];
7112		- $rag_context_for_storage['approved_urls'] = $this->current_valid_urls ?? [];
7113		- $rag_context_for_storage['similarity_threshold'] = $this->last_similarity_analysis['threshold_used'] ?? 0.35;
7114		- $rag_context_for_storage['knowledge_base_type'] = $this->last_similarity_analysis['knowledge_base_type'] ?? 'WordPress Database';
7115		- $rag_context_for_storage['total_documents_checked'] = $this->last_similarity_analysis['total_checked'] ?? 0;
7116		- }
7117		-
7118		- if ($has_action_data) {
7119		- $rag_context_for_storage['action_analysis'] = $this->last_action_analysis;
7120		- }
7121		- }
7122		- $this->mxchat_save_chat_message($session_id, 'bot', $full_response, null, $rag_context_for_storage);
7123		- }
7124		-
7125		- return true;
7126		-
7127		- } catch (Exception $e) {
7128		- $regular_response = $this->mxchat_generate_response_openrouter(
7129		- $selected_model,
7130		- $openrouter_api_key,
7131		- $conversation_history,
7132		- $relevant_content
7133		- );
7134		-
7135		- $response_data = [
7136		- 'text' => $regular_response,
7137		- 'html' => '',
7138		- 'session_id' => $session_id
7139		- ];
7140		-
7141		- if ($testing_data !== null) {
7142		- $response_data['testing_data'] = $testing_data;
7143		- }
7144		-
7145		- header('Content-Type: application/json');
7146		- echo json_encode($response_data);
7147		- return true;
7148		- }
7149		-}
7150	4510	private function mxchat_generate_response_openai_stream($selected_model, $api_key, $conversation_history, $relevant_content, $session_id, $testing_data = null) {
7151	4511	try {
7152	4512	$bot_id = $this->get_current_bot_id($session_id);
7153	4513
7154	4514	// Get system prompt instructions using centralized function
7155		- $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
	4515	+ $system_prompt_instructions = $this->get_system_instructions($bot_id);
7156	4516
7157	4517	// Ensure conversation_history is an array
7158	4518	if (!is_array($conversation_history)) {
7159	4519	$conversation_history = array();
		@@ -7192,13 +4552,8 @@
7192	4552	$conversation_history,
7193	4553	$relevant_content
7194	4554	);
7195	4555
7196		- // Save bot response to transcript
7197		- if (!empty($regular_response) && !empty($session_id)) {
7198		- $this->mxchat_save_chat_message($session_id, 'bot', $regular_response);
7199		- }
7200		-
7201	4556	$response_data = [
7202	4557	'text' => $regular_response,
7203	4558	'html' => '',
7204	4559	'session_id' => $session_id
		@@ -7212,47 +4567,16 @@
7212	4567	echo json_encode($response_data);
7213	4568	return true;
7214	4569	}
7215	4570
7216		- // Check if this is a GPT-5 model (supports reasoning_effort parameter)
7217		- $is_gpt5_model = (
7218		- strpos($selected_model, 'gpt-5') === 0 ||
7219		- $selected_model === 'gpt-5.2' ||
7220		- $selected_model === 'gpt-5.1-2025-11-13' ||
7221		- $selected_model === 'gpt-5' ||
7222		- $selected_model === 'gpt-5-mini' ||
7223		- $selected_model === 'gpt-5-nano'
7224		- );
7225		-
7226		- // Build request body with optimal settings for fast streaming
7227		- $request_body = [
	4571	+ // Prepare the request body with stream: true
	4572	+ $body = json_encode([
7228	4573	'model' => $selected_model,
7229	4574	'messages' => $formatted_conversation,
7230	4575	'temperature' => 1,
7231	4576	'stream' => true
7232		- ];
	4577	+ ]);
7233	4578
7234		- // Add reasoning_effort only for GPT-5 models that support it
7235		- // These chat models don't support reasoning_effort parameter
7236		- $no_reasoning_models = array('gpt-5.2', 'gpt-5.1-chat-latest', 'gpt-5.3-chat-latest', 'gpt-5.4-mini', 'gpt-5.4-nano');
7237		- if ($is_gpt5_model && !in_array($selected_model, $no_reasoning_models, true)) {
7238		- // GPT-5.1 uses 'low' instead of 'minimal'
7239		- if ($selected_model === 'gpt-5.1-2025-11-13') {
7240		- $request_body['reasoning_effort'] = 'low';
7241		- } elseif ($selected_model === 'gpt-5.5') {
7242		- $request_body['reasoning_effort'] = 'none';
7243		- } elseif ($selected_model === 'gpt-5.4') {
7244		- $request_body['reasoning_effort'] = 'none';
7245		- } else {
7246		- $request_body['reasoning_effort'] = 'minimal';
7247		- }
7248		- }
7249		-
7250		- $body = json_encode($request_body);
7251		-
7252		- // Setup streaming headers now that we know we're actually streaming
7253		- $this->setup_streaming_headers();
7254		-
7255	4579	// Use cURL for streaming support
7256	4580	$ch = curl_init();
7257	4581	curl_setopt($ch, CURLOPT_URL, 'https://api.openai.com/v1/chat/completions');
7258	4582	curl_setopt($ch, CURLOPT_RETURNTRANSFER, false);
		@@ -7325,11 +4649,10 @@
7325	4649	$response = curl_exec($ch);
7326	4650	$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
7327	4651
7328	4652	if (curl_errno($ch) || $http_code !== 200) {
7329		- $curl_error = curl_error($ch);
7330	4653	curl_close($ch);
7331		-
	4654	+
7332	4655	// Fallback to regular response
7333	4656	$regular_response = $this->mxchat_generate_response_openai(
7334	4657	$selected_model,
7335	4658	$api_key,
		@@ -7335,34 +4658,19 @@
7335	4658	$api_key,
7336	4659	$conversation_history,
7337	4660	$relevant_content
7338	4661	);
7339		-
7340		- // FIXED: Check if regular response returned an error
7341		- if (is_array($regular_response) && isset($regular_response['error'])) {
7342		- // Send error in SSE format since we're in streaming mode
7343		- echo "data: " . json_encode([
7344		- 'error' => true,
7345		- 'error_message' => $regular_response['error'],
7346		- 'error_code' => $regular_response['error_code'] ?? 'api_error',
7347		- 'text' => $regular_response['error'],
7348		- 'message' => $regular_response['error']
7349		- ]) . "\n\n";
7350		- echo "data: [DONE]\n\n";
7351		- flush();
7352		- return true;
7353		- }
7354		-
	4662	+
7355	4663	$response_data = [
7356	4664	'text' => $regular_response,
7357	4665	'html' => '',
7358	4666	'session_id' => $session_id
7359	4667	];
7360		-
	4668	+
7361	4669	if ($testing_data !== null) {
7362	4670	$response_data['testing_data'] = $testing_data;
7363	4671	}
7364		-
	4672	+
7365	4673	header('Content-Type: application/json');
7366	4674	echo json_encode($response_data);
7367	4675	return true;
7368	4676	}
		@@ -7367,36 +4675,16 @@
7367	4675	return true;
7368	4676	}
7369	4677
7370	4678	curl_close($ch);
7371		-
	4679	+
7372	4680	// Save the complete response to maintain chat persistence
7373	4681	if (!empty($full_response) && !empty($session_id)) {
7374		- // Prepare RAG context for streaming response
7375		- $rag_context_for_storage = null;
7376		- $has_rag_data = $this->last_similarity_analysis !== null && !empty($this->last_similarity_analysis['top_matches']);
7377		- $has_action_data = isset($this->last_action_analysis) && !empty($this->last_action_analysis);
7378		-
7379		- if ($has_rag_data || $has_action_data) {
7380		- $rag_context_for_storage = [];
7381		-
7382		- if ($has_rag_data) {
7383		- $rag_context_for_storage['top_matches'] = $this->last_similarity_analysis['top_matches'];
7384		- $rag_context_for_storage['approved_urls'] = $this->current_valid_urls ?? [];
7385		- $rag_context_for_storage['similarity_threshold'] = $this->last_similarity_analysis['threshold_used'] ?? 0.35;
7386		- $rag_context_for_storage['knowledge_base_type'] = $this->last_similarity_analysis['knowledge_base_type'] ?? 'WordPress Database';
7387		- $rag_context_for_storage['total_documents_checked'] = $this->last_similarity_analysis['total_checked'] ?? 0;
7388		- }
7389		-
7390		- if ($has_action_data) {
7391		- $rag_context_for_storage['action_analysis'] = $this->last_action_analysis;
7392		- }
7393		- }
7394		- $this->mxchat_save_chat_message($session_id, 'bot', $full_response, null, $rag_context_for_storage);
	4682	+ $this->mxchat_save_chat_message($session_id, 'bot', $full_response);
7395	4683	}
7396		-
	4684	+
7397	4685	return true; // Indicate streaming completed successfully
7398		-
	4686	+
7399	4687	} catch (Exception $e) {
7400	4688	// Fallback to regular response
7401	4689	$regular_response = $this->mxchat_generate_response_openai(
7402	4690	$selected_model,
		@@ -7403,627 +4691,24 @@
7403	4691	$api_key,
7404	4692	$conversation_history,
7405	4693	$relevant_content
7406	4694	);
7407		-
7408		- // FIXED: Check if regular response returned an error
7409		- if (is_array($regular_response) && isset($regular_response['error'])) {
7410		- // Send error in SSE format since we're in streaming mode
7411		- echo "data: " . json_encode([
7412		- 'error' => true,
7413		- 'error_message' => $regular_response['error'],
7414		- 'error_code' => $regular_response['error_code'] ?? 'api_error',
7415		- 'text' => $regular_response['error'],
7416		- 'message' => $regular_response['error']
7417		- ]) . "\n\n";
7418		- echo "data: [DONE]\n\n";
7419		- flush();
7420		- return true;
7421		- }
7422		-
	4695	+
7423	4696	$response_data = [
7424	4697	'text' => $regular_response,
7425	4698	'html' => '',
7426	4699	'session_id' => $session_id
7427	4700	];
7428		-
	4701	+
7429	4702	if ($testing_data !== null) {
7430	4703	$response_data['testing_data'] = $testing_data;
7431	4704	}
7432		-
	4705	+
7433	4706	header('Content-Type: application/json');
7434	4707	echo json_encode($response_data);
7435	4708	return true;
7436	4709	}
7437	4710	}
7438		-
7439		-/**
7440		- * Resolve custom (OpenAI-compatible) provider config from settings.
7441		- * Returns ['base_url','api_key','model','auth_scheme','api_version','chat_url','headers'].
7442		- */
7443		-private function mxchat_resolve_custom_provider() {
7444		- $base_url = isset($this->options['custom_provider_base_url']) ? rtrim(trim((string) $this->options['custom_provider_base_url']), '/') : '';
7445		- $api_key = isset($this->options['custom_provider_api_key']) ? trim((string) $this->options['custom_provider_api_key']) : '';
7446		- $model = isset($this->options['custom_provider_model']) ? trim((string) $this->options['custom_provider_model']) : '';
7447		- $auth_scheme = isset($this->options['custom_provider_auth_scheme']) ? $this->options['custom_provider_auth_scheme'] : 'bearer';
7448		- $api_version = isset($this->options['custom_provider_api_version']) ? trim((string) $this->options['custom_provider_api_version']) : '';
7449		-
7450		- $chat_url = $base_url . '/chat/completions';
7451		- if (!empty($api_version)) {
7452		- $chat_url .= (strpos($chat_url, '?') === false ? '?' : '&') . 'api-version=' . rawurlencode($api_version);
7453		- }
7454		-
7455		- $headers = array('Content-Type: application/json');
7456		- if (!empty($api_key)) {
7457		- if ($auth_scheme === 'api-key') {
7458		- $headers[] = 'api-key: ' . $api_key;
7459		- } else {
7460		- $headers[] = 'Authorization: Bearer ' . $api_key;
7461		- }
7462		- }
7463		-
7464		- return array(
7465		- 'base_url' => $base_url,
7466		- 'api_key' => $api_key,
7467		- 'model' => $model !== '' ? $model : 'default',
7468		- 'auth_scheme' => $auth_scheme,
7469		- 'api_version' => $api_version,
7470		- 'chat_url' => $chat_url,
7471		- 'headers' => $headers,
7472		- );
7473		-}
7474		-
7475		-/**
7476		- * Streaming chat completion against an OpenAI-compatible custom provider
7477		- * (Ollama, LM Studio, vLLM, llama.cpp, Azure OpenAI, etc.).
7478		- * Mirrors mxchat_generate_response_openai_stream but with parameterized URL/auth/model.
7479		- */
7480		-private function mxchat_generate_response_custom_stream($selected_model, $conversation_history, $relevant_content, $session_id, $testing_data = null) {
7481		- try {
7482		- $cfg = $this->mxchat_resolve_custom_provider();
7483		- if (empty($cfg['base_url'])) {
7484		- return array('error' => esc_html__('Custom provider Base URL is not configured.', 'mxchat'), 'error_code' => 'missing_custom_provider_base_url');
7485		- }
7486		-
7487		- $bot_id = $this->get_current_bot_id($session_id);
7488		- $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
7489		- if (!is_array($conversation_history)) {
7490		- $conversation_history = array();
7491		- }
7492		-
7493		- $formatted_conversation = array();
7494		- $formatted_conversation[] = array(
7495		- 'role' => 'system',
7496		- 'content' => $system_prompt_instructions . ' ' . $relevant_content,
7497		- );
7498		- foreach ($conversation_history as $message) {
7499		- if (is_array($message) && isset($message['role']) && isset($message['content'])) {
7500		- $role = $message['role'];
7501		- if ($role === 'bot' || $role === 'agent') { $role = 'assistant'; }
7502		- if (!in_array($role, array('system', 'assistant', 'user', 'function', 'tool'))) { $role = 'user'; }
7503		- $formatted_conversation[] = array('role' => $role, 'content' => $message['content']);
7504		- }
7505		- }
7506		-
7507		- if (headers_sent() || !function_exists('curl_init')) {
7508		- // No streaming capability — fall through to non-stream wrapper
7509		- $regular = $this->mxchat_generate_response_custom($selected_model, $conversation_history, $relevant_content);
7510		- if (!empty($regular) && !empty($session_id) && is_string($regular)) {
7511		- $this->mxchat_save_chat_message($session_id, 'bot', $regular);
7512		- }
7513		- $response_data = array('text' => is_string($regular) ? $regular : '', 'html' => '', 'session_id' => $session_id);
7514		- if ($testing_data !== null) { $response_data['testing_data'] = $testing_data; }
7515		- header('Content-Type: application/json');
7516		- echo json_encode($response_data);
7517		- return true;
7518		- }
7519		-
7520		- $request_body = array(
7521		- 'model' => $cfg['model'],
7522		- 'messages' => $formatted_conversation,
7523		- 'stream' => true,
7524		- );
7525		- $body = json_encode($request_body);
7526		-
7527		- $this->setup_streaming_headers();
7528		-
7529		- $ch = curl_init();
7530		- curl_setopt($ch, CURLOPT_URL, $cfg['chat_url']);
7531		- curl_setopt($ch, CURLOPT_RETURNTRANSFER, false);
7532		- curl_setopt($ch, CURLOPT_POST, true);
7533		- curl_setopt($ch, CURLOPT_POSTFIELDS, $body);
7534		- curl_setopt($ch, CURLOPT_HTTPHEADER, $cfg['headers']);
7535		- curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
7536		- curl_setopt($ch, CURLOPT_TIMEOUT, 120);
7537		-
7538		- $full_response = '';
7539		- $stream_started = false;
7540		- $buffer = '';
7541		-
7542		- curl_setopt($ch, CURLOPT_WRITEFUNCTION, function($ch, $data) use (&$full_response, &$stream_started, &$buffer, $testing_data) {
7543		- if (!$stream_started && $testing_data !== null) {
7544		- echo "data: " . json_encode(array('testing_data' => $testing_data)) . "\n\n";
7545		- flush();
7546		- $stream_started = true;
7547		- }
7548		- $buffer .= $data;
7549		- $lines = explode("\n", $buffer);
7550		- $buffer = array_pop($lines);
7551		- foreach ($lines as $line) {
7552		- if (trim($line) === '') { continue; }
7553		- if (strpos($line, 'data: ') !== 0) { continue; }
7554		- $json_str = substr($line, 6);
7555		- if (trim($json_str) === '[DONE]') {
7556		- echo "data: [DONE]\n\n";
7557		- flush();
7558		- continue;
7559		- }
7560		- $json = json_decode(trim($json_str), true);
7561		- if ($json && isset($json['choices'][0]['delta']['content'])) {
7562		- $content = $json['choices'][0]['delta']['content'];
7563		- $full_response .= $content;
7564		- echo "data: " . json_encode(array('content' => $content)) . "\n\n";
7565		- flush();
7566		- }
7567		- }
7568		- return strlen($data);
7569		- });
7570		-
7571		- $response = curl_exec($ch);
7572		- $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
7573		-
7574		- if (curl_errno($ch) || $http_code !== 200) {
7575		- $curl_error = curl_error($ch);
7576		- curl_close($ch);
7577		- $regular = $this->mxchat_generate_response_custom($selected_model, $conversation_history, $relevant_content);
7578		- if (is_array($regular) && isset($regular['error'])) {
7579		- echo "data: " . json_encode(array(
7580		- 'error' => true,
7581		- 'error_message' => $regular['error'],
7582		- 'error_code' => $regular['error_code'] ?? 'custom_provider_error',
7583		- 'text' => $regular['error'],
7584		- 'message' => $regular['error'],
7585		- )) . "\n\n";
7586		- echo "data: [DONE]\n\n";
7587		- flush();
7588		- return true;
7589		- }
7590		- $response_data = array('text' => is_string($regular) ? $regular : '', 'html' => '', 'session_id' => $session_id);
7591		- if ($testing_data !== null) { $response_data['testing_data'] = $testing_data; }
7592		- header('Content-Type: application/json');
7593		- echo json_encode($response_data);
7594		- return true;
7595		- }
7596		-
7597		- curl_close($ch);
7598		-
7599		- if (!empty($full_response) && !empty($session_id)) {
7600		- $this->mxchat_save_chat_message($session_id, 'bot', $full_response);
7601		- }
7602		- return true;
7603		-
7604		- } catch (Exception $e) {
7605		- return array('error' => sprintf(esc_html__('Custom provider error: %s', 'mxchat'), $e->getMessage()), 'error_code' => 'custom_provider_exception');
7606		- }
7607		-}
7608		-
7609		-/**
7610		- * Non-streaming chat completion against a custom OpenAI-compatible provider.
7611		- * Returns string content on success, array['error'=>...] on failure.
7612		- */
7613		-private function mxchat_generate_response_custom($selected_model, $conversation_history, $relevant_content) {
7614		- $cfg = $this->mxchat_resolve_custom_provider();
7615		- if (empty($cfg['base_url'])) {
7616		- return array('error' => esc_html__('Custom provider Base URL is not configured.', 'mxchat'), 'error_code' => 'missing_custom_provider_base_url');
7617		- }
7618		-
7619		- $bot_id = $this->get_current_bot_id(null);
7620		- $system_prompt_instructions = $this->get_system_instructions($bot_id, null);
7621		- if (!is_array($conversation_history)) {
7622		- $conversation_history = array();
7623		- }
7624		-
7625		- $messages = array(array(
7626		- 'role' => 'system',
7627		- 'content' => $system_prompt_instructions . ' ' . $relevant_content,
7628		- ));
7629		- foreach ($conversation_history as $message) {
7630		- if (is_array($message) && isset($message['role']) && isset($message['content'])) {
7631		- $role = $message['role'];
7632		- if ($role === 'bot' || $role === 'agent') { $role = 'assistant'; }
7633		- if (!in_array($role, array('system', 'assistant', 'user', 'function', 'tool'))) { $role = 'user'; }
7634		- $messages[] = array('role' => $role, 'content' => $message['content']);
7635		- }
7636		- }
7637		-
7638		- $headers_assoc = array('Content-Type' => 'application/json');
7639		- if (!empty($cfg['api_key'])) {
7640		- if ($cfg['auth_scheme'] === 'api-key') {
7641		- $headers_assoc['api-key'] = $cfg['api_key'];
7642		- } else {
7643		- $headers_assoc['Authorization'] = 'Bearer ' . $cfg['api_key'];
7644		- }
7645		- }
7646		-
7647		- $response = wp_remote_post($cfg['chat_url'], array(
7648		- 'headers' => $headers_assoc,
7649		- 'body' => wp_json_encode(array(
7650		- 'model' => $cfg['model'],
7651		- 'messages' => $messages,
7652		- )),
7653		- 'timeout' => 120,
7654		- ));
7655		-
7656		- if (is_wp_error($response)) {
7657		- return array('error' => sprintf(esc_html__('Custom provider request failed: %s', 'mxchat'), $response->get_error_message()), 'error_code' => 'custom_provider_network_error');
7658		- }
7659		- $code = (int) wp_remote_retrieve_response_code($response);
7660		- if ($code < 200 || $code >= 300) {
7661		- return array('error' => sprintf(esc_html__('Custom provider returned HTTP %d.', 'mxchat'), $code), 'error_code' => 'custom_provider_http_error');
7662		- }
7663		- $body = json_decode(wp_remote_retrieve_body($response), true);
7664		- if (isset($body['choices'][0]['message']['content'])) {
7665		- return (string) $body['choices'][0]['message']['content'];
7666		- }
7667		- return array('error' => esc_html__('Custom provider returned an unexpected response shape.', 'mxchat'), 'error_code' => 'custom_provider_response_shape');
7668		-}
7669		-
7670		-/**
7671		- * Generate response using OpenAI Responses API with web search tool
7672		- * This uses the newer Responses API which supports web search functionality
7673		- */
7674		-private function mxchat_generate_response_openai_web_search($selected_model, $api_key, $conversation_history, $relevant_content, $session_id, $testing_data = null, $streaming = false) {
7675		- try {
7676		- $bot_id = $this->get_current_bot_id($session_id);
7677		- $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
7678		-
7679		- if (!is_array($conversation_history)) {
7680		- $conversation_history = array();
7681		- }
7682		-
7683		- // Build the input for Responses API
7684		- // The Responses API uses a different format - we need to construct the input properly
7685		- $input_parts = [];
7686		-
7687		- // Add system instructions as context
7688		- $system_context = $system_prompt_instructions . "\n\n" . $relevant_content;
7689		-
7690		- // Build conversation as input items for Responses API
7691		- foreach ($conversation_history as $message) {
7692		- if (is_array($message) && isset($message['role']) && isset($message['content'])) {
7693		- $role = $message['role'];
7694		- if ($role === 'bot' || $role === 'agent') {
7695		- $role = 'assistant';
7696		- }
7697		- if (!in_array($role, ['assistant', 'user'])) {
7698		- $role = 'user';
7699		- }
7700		- $input_parts[] = [
7701		- 'type' => 'message',
7702		- 'role' => $role,
7703		- 'content' => $message['content']
7704		- ];
7705		- }
7706		- }
7707		-
7708		- // Build request body for Responses API
7709		- $request_body = [
7710		- 'model' => $selected_model,
7711		- 'input' => $input_parts,
7712		- 'instructions' => $system_context,
7713		- 'stream' => $streaming
7714		- ];
7715		-
7716		- // Only add web search tool if web search is enabled in settings
7717		- $web_search_enabled = isset($this->options['enable_web_search']) && $this->options['enable_web_search'] === 'on';
7718		- if ($web_search_enabled) {
7719		- $request_body['tools'] = [
7720		- ['type' => 'web_search']
7721		- ];
7722		- }
7723		-
7724		- // Add reasoning effort for supported models
7725		- $is_gpt5_model = strpos($selected_model, 'gpt-5') === 0;
7726		- $no_reasoning_web = array('gpt-5.2', 'gpt-5.3-chat-latest', 'gpt-5.4-mini', 'gpt-5.4-nano');
7727		- if ($is_gpt5_model && !in_array($selected_model, $no_reasoning_web, true)) {
7728		- if ($selected_model === 'gpt-5.1-2025-11-13') {
7729		- $request_body['reasoning'] = ['effort' => 'low'];
7730		- } elseif ($selected_model === 'gpt-5.5') {
7731		- $request_body['reasoning'] = ['effort' => 'low'];
7732		- } elseif ($selected_model === 'gpt-5.4') {
7733		- $request_body['reasoning'] = ['effort' => 'low'];
7734		- }
7735		- }
7736		-
7737		- //error_log("MXCHAT WEB SEARCH: Request body: " . json_encode($request_body));
7738		-
7739		- if ($streaming) {
7740		- return $this->mxchat_web_search_streaming_response($request_body, $api_key, $session_id, $testing_data);
7741		- } else {
7742		- return $this->mxchat_web_search_non_streaming_response($request_body, $api_key, $session_id, $testing_data);
7743		- }
7744		-
7745		- } catch (Exception $e) {
7746		- //error_log("MXCHAT WEB SEARCH ERROR: " . $e->getMessage());
7747		- return [
7748		- 'error' => sprintf(esc_html__('Web search error: %s', 'mxchat'), esc_html($e->getMessage())),
7749		- 'error_code' => 'web_search_exception'
7750		- ];
7751		- }
7752		-}
7753		-
7754		-/**
7755		- * Handle non-streaming web search response
7756		- */
7757		-private function mxchat_web_search_non_streaming_response($request_body, $api_key, $session_id, $testing_data) {
7758		- $request_body['stream'] = false;
7759		-
7760		- $response = wp_remote_post('https://api.openai.com/v1/responses', array(
7761		- 'headers' => array(
7762		- 'Authorization' => 'Bearer ' . $api_key,
7763		- 'Content-Type' => 'application/json'
7764		- ),
7765		- 'body' => json_encode($request_body),
7766		- 'timeout' => 90
7767		- ));
7768		-
7769		- if (is_wp_error($response)) {
7770		- //error_log("MXCHAT WEB SEARCH ERROR: WP Error: " . $response->get_error_message());
7771		- return [
7772		- 'error' => esc_html__('Failed to connect to OpenAI web search API', 'mxchat'),
7773		- 'error_code' => 'web_search_connection_error'
7774		- ];
7775		- }
7776		-
7777		- $response_code = wp_remote_retrieve_response_code($response);
7778		- $response_body = wp_remote_retrieve_body($response);
7779		-
7780		- //error_log("MXCHAT WEB SEARCH: Response code: " . $response_code);
7781		- //error_log("MXCHAT WEB SEARCH: Response body (first 2000): " . substr($response_body, 0, 2000));
7782		-
7783		- if ($response_code !== 200) {
7784		- $error_data = json_decode($response_body, true);
7785		- $error_message = $error_data['error']['message'] ?? 'Unknown API error';
7786		- return [
7787		- 'error' => sprintf(esc_html__('OpenAI API error: %s', 'mxchat'), esc_html($error_message)),
7788		- 'error_code' => 'web_search_api_error'
7789		- ];
7790		- }
7791		-
7792		- $result = json_decode($response_body, true);
7793		-
7794		- if (json_last_error() !== JSON_ERROR_NONE) {
7795		- return [
7796		- 'error' => esc_html__('Invalid response from OpenAI', 'mxchat'),
7797		- 'error_code' => 'web_search_json_error'
7798		- ];
7799		- }
7800		-
7801		- // Extract the response text and citations from Responses API format
7802		- $output_text = '';
7803		- $citations = [];
7804		-
7805		- if (isset($result['output'])) {
7806		- foreach ($result['output'] as $output_item) {
7807		- if ($output_item['type'] === 'message' && isset($output_item['content'])) {
7808		- foreach ($output_item['content'] as $content_item) {
7809		- if ($content_item['type'] === 'output_text') {
7810		- $output_text .= $content_item['text'];
7811		-
7812		- // Extract citations/annotations
7813		- if (isset($content_item['annotations'])) {
7814		- foreach ($content_item['annotations'] as $annotation) {
7815		- if ($annotation['type'] === 'url_citation') {
7816		- $citations[] = [
7817		- 'url' => $annotation['url'],
7818		- 'title' => $annotation['title'] ?? ''
7819		- ];
7820		- }
7821		- }
7822		- }
7823		- }
7824		- }
7825		- }
7826		- }
7827		- }
7828		-
7829		- // If we have citations, append them to the response
7830		- if (!empty($citations)) {
7831		- $output_text .= "\n\n**Sources:**\n";
7832		- $seen_urls = [];
7833		- foreach ($citations as $citation) {
7834		- if (!in_array($citation['url'], $seen_urls)) {
7835		- $seen_urls[] = $citation['url'];
7836		- $title = !empty($citation['title']) ? $citation['title'] : $citation['url'];
7837		- $output_text .= "- [" . $title . "](" . $citation['url'] . ")\n";
7838		- }
7839		- }
7840		- }
7841		-
7842		- // Transcript save is handled by the main handler (mxchat_handle_chat_request)
7843		- // which includes rag_context for the "sources" link in transcripts.
7844		-
7845		- return $output_text;
7846		-}
7847		-
7848		-/**
7849		- * Handle streaming web search response using Responses API
7850		- */
7851		-private function mxchat_web_search_streaming_response($request_body, $api_key, $session_id, $testing_data) {
7852		- $request_body['stream'] = true;
7853		-
7854		- // Check if we can stream
7855		- if (headers_sent() || !function_exists('curl_init')) {
7856		- // Fallback to non-streaming
7857		- return $this->mxchat_web_search_non_streaming_response($request_body, $api_key, $session_id, $testing_data);
7858		- }
7859		-
7860		- // Setup streaming headers
7861		- $this->setup_streaming_headers();
7862		-
7863		- $ch = curl_init();
7864		- curl_setopt($ch, CURLOPT_URL, 'https://api.openai.com/v1/responses');
7865		- curl_setopt($ch, CURLOPT_RETURNTRANSFER, false);
7866		- curl_setopt($ch, CURLOPT_POST, true);
7867		- curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($request_body));
7868		- curl_setopt($ch, CURLOPT_HTTPHEADER, array(
7869		- 'Content-Type: application/json',
7870		- 'Authorization: Bearer ' . $api_key
7871		- ));
7872		- curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
7873		- curl_setopt($ch, CURLOPT_TIMEOUT, 120);
7874		-
7875		- $full_response = '';
7876		- $stream_started = false;
7877		- $buffer = '';
7878		- $citations = [];
7879		-
7880		- curl_setopt($ch, CURLOPT_WRITEFUNCTION, function($ch, $data) use (&$full_response, &$stream_started, &$buffer, &$citations, $testing_data) {
7881		- // Send testing data as first event if available
7882		- if (!$stream_started && $testing_data !== null) {
7883		- echo "data: " . json_encode(['testing_data' => $testing_data]) . "\n\n";
7884		- flush();
7885		- $stream_started = true;
7886		- }
7887		-
7888		- $buffer .= $data;
7889		- $lines = explode("\n", $buffer);
7890		- $buffer = array_pop($lines);
7891		-
7892		- foreach ($lines as $line) {
7893		- if (trim($line) === '') continue;
7894		- if (strpos($line, 'data: ') !== 0) continue;
7895		-
7896		- $json_str = substr($line, 6);
7897		-
7898		- if (trim($json_str) === '[DONE]') {
7899		- // Append citations if we have any
7900		- if (!empty($citations)) {
7901		- $citation_text = "\n\n**Sources:**\n";
7902		- $seen_urls = [];
7903		- foreach ($citations as $citation) {
7904		- if (!in_array($citation['url'], $seen_urls)) {
7905		- $seen_urls[] = $citation['url'];
7906		- $title = !empty($citation['title']) ? $citation['title'] : $citation['url'];
7907		- $citation_text .= "- [" . $title . "](" . $citation['url'] . ")\n";
7908		- }
7909		- }
7910		- echo "data: " . json_encode(['content' => $citation_text]) . "\n\n";
7911		- $full_response .= $citation_text;
7912		- flush();
7913		- }
7914		- echo "data: [DONE]\n\n";
7915		- flush();
7916		- continue;
7917		- }
7918		-
7919		- $json = json_decode(trim($json_str), true);
7920		- if (!$json) continue;
7921		-
7922		- // Handle Responses API streaming events
7923		- // The format is different from Chat Completions
7924		- if (isset($json['type'])) {
7925		- switch ($json['type']) {
7926		- case 'response.output_text.delta':
7927		- // Text content delta
7928		- if (isset($json['delta'])) {
7929		- $content = $json['delta'];
7930		- $full_response .= $content;
7931		- echo "data: " . json_encode(['content' => $content]) . "\n\n";
7932		- flush();
7933		- }
7934		- break;
7935		-
7936		- case 'response.output_item.done':
7937		- // Check for citations in completed items
7938		- if (isset($json['item']['content'])) {
7939		- foreach ($json['item']['content'] as $content_item) {
7940		- if (isset($content_item['annotations'])) {
7941		- foreach ($content_item['annotations'] as $annotation) {
7942		- if ($annotation['type'] === 'url_citation') {
7943		- $citations[] = [
7944		- 'url' => $annotation['url'],
7945		- 'title' => $annotation['title'] ?? ''
7946		- ];
7947		- }
7948		- }
7949		- }
7950		- }
7951		- }
7952		- break;
7953		- }
7954		- }
7955		- }
7956		-
7957		- return strlen($data);
7958		- });
7959		-
7960		- $response = curl_exec($ch);
7961		- $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
7962		-
7963		- if (curl_errno($ch) || $http_code !== 200) {
7964		- $curl_error = curl_error($ch);
7965		- curl_close($ch);
7966		-
7967		- //error_log("MXCHAT WEB SEARCH STREAM ERROR: HTTP $http_code, cURL error: $curl_error");
7968		-
7969		- // Fallback to non-streaming
7970		- $fallback_response = $this->mxchat_web_search_non_streaming_response($request_body, $api_key, $session_id, $testing_data);
7971		-
7972		- if (is_array($fallback_response) && isset($fallback_response['error'])) {
7973		- echo "data: " . json_encode([
7974		- 'error' => true,
7975		- 'error_message' => $fallback_response['error'],
7976		- 'error_code' => $fallback_response['error_code'] ?? 'web_search_error'
7977		- ]) . "\n\n";
7978		- echo "data: [DONE]\n\n";
7979		- flush();
7980		- return true;
7981		- }
7982		-
7983		- $response_data = [
7984		- 'text' => $fallback_response,
7985		- 'html' => '',
7986		- 'session_id' => $session_id
7987		- ];
7988		- if ($testing_data !== null) {
7989		- $response_data['testing_data'] = $testing_data;
7990		- }
7991		- header('Content-Type: application/json');
7992		- echo json_encode($response_data);
7993		- return true;
7994		- }
7995		-
7996		- curl_close($ch);
7997		-
7998		- // Save the complete response with RAG context so the "sources" link
7999		- // appears in transcripts — mirrors the pattern used by Claude/OpenAI streaming.
8000		- if (!empty($full_response) && !empty($session_id)) {
8001		- $rag_context_for_storage = null;
8002		- $has_rag_data = $this->last_similarity_analysis !== null && !empty($this->last_similarity_analysis['top_matches']);
8003		- $has_action_data = isset($this->last_action_analysis) && !empty($this->last_action_analysis);
8004		-
8005		- if ($has_rag_data || $has_action_data) {
8006		- $rag_context_for_storage = [];
8007		-
8008		- if ($has_rag_data) {
8009		- $rag_context_for_storage['top_matches'] = $this->last_similarity_analysis['top_matches'];
8010		- $rag_context_for_storage['approved_urls'] = $this->current_valid_urls ?? [];
8011		- $rag_context_for_storage['similarity_threshold'] = $this->last_similarity_analysis['threshold_used'] ?? 0.35;
8012		- $rag_context_for_storage['knowledge_base_type'] = $this->last_similarity_analysis['knowledge_base_type'] ?? 'WordPress Database';
8013		- $rag_context_for_storage['total_documents_checked'] = $this->last_similarity_analysis['total_checked'] ?? 0;
8014		- }
8015		-
8016		- if ($has_action_data) {
8017		- $rag_context_for_storage['action_analysis'] = $this->last_action_analysis;
8018		- }
8019		- }
8020		- $this->mxchat_save_chat_message($session_id, 'bot', $full_response, null, $rag_context_for_storage);
8021		- }
8022		-
8023		- return true;
8024		-}
8025		-
8026	4711	private function mxchat_generate_response_claude_stream($selected_model, $claude_api_key, $conversation_history, $relevant_content, $session_id, $testing_data = null) {
8027	4712	try {
8028	4713	// Get bot ID from session or request
8029	4714	$bot_id = $this->get_current_bot_id($session_id);
		@@ -8028,9 +4713,9 @@
8028	4713	// Get bot ID from session or request
8029	4714	$bot_id = $this->get_current_bot_id($session_id);
8030	4715
8031	4716	// Get system prompt instructions using centralized function
8032		- $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
	4717	+ $system_prompt_instructions = $this->get_system_instructions($bot_id);
8033	4718	// Ensure conversation_history is an array
8034	4719	if (!is_array($conversation_history)) {
8035	4720	$conversation_history = array();
8036	4721	}
		@@ -8082,13 +4767,8 @@
8082	4767	array_slice($conversation_history, 0, -1), // Remove the added content
8083	4768	$relevant_content
8084	4769	);
8085	4770
8086		- // Save bot response to transcript
8087		- if (!empty($regular_response) && !empty($session_id)) {
8088		- $this->mxchat_save_chat_message($session_id, 'bot', $regular_response);
8089		- }
8090		-
8091	4771	// Return as JSON with testing data
8092	4772	$response_data = [
8093	4773	'text' => $regular_response,
8094	4774	'html' => '',
		@@ -8107,11 +4787,8 @@
8107	4787	echo json_encode($response_data);
8108	4788	return true; // Indicate we handled the response
8109	4789	}
8110	4790
8111		- // Setup streaming headers now that we know we're actually streaming
8112		- $this->setup_streaming_headers();
8113		-
8114	4791	// Use cURL for streaming support
8115	4792	$ch = curl_init();
8116	4793	curl_setopt($ch, CURLOPT_URL, 'https://api.anthropic.com/v1/messages');
8117	4794	curl_setopt($ch, CURLOPT_RETURNTRANSFER, false);
		@@ -8216,35 +4893,20 @@
8216	4893	$claude_api_key,
8217	4894	array_slice($conversation_history, 0, -1), // Remove the added content
8218	4895	$relevant_content
8219	4896	);
8220		-
8221		- // FIXED: Check if regular response returned an error
8222		- if (is_array($regular_response) && isset($regular_response['error'])) {
8223		- // Send error in SSE format since we're in streaming mode
8224		- echo "data: " . json_encode([
8225		- 'error' => true,
8226		- 'error_message' => $regular_response['error'],
8227		- 'error_code' => $regular_response['error_code'] ?? 'api_error',
8228		- 'text' => $regular_response['error'],
8229		- 'message' => $regular_response['error']
8230		- ]) . "\n\n";
8231		- echo "data: [DONE]\n\n";
8232		- flush();
8233		- return true;
8234		- }
8235		-
	4897	+
8236	4898	$response_data = [
8237	4899	'text' => $regular_response,
8238	4900	'html' => '',
8239	4901	'session_id' => $session_id
8240	4902	];
8241		-
	4903	+
8242	4904	if ($testing_data !== null) {
8243	4905	$response_data['testing_data'] = $testing_data;
8244	4906	//error_log("MxChat Testing: Added testing data to Claude error fallback");
8245	4907	}
8246		-
	4908	+
8247	4909	header('Content-Type: application/json');
8248	4910	echo json_encode($response_data);
8249	4911	return true;
8250	4912	}
		@@ -8250,29 +4912,9 @@
8250	4912	}
8251	4913
8252	4914	// Save the complete response to maintain chat persistence
8253	4915	if (!empty($full_response) && !empty($session_id)) {
8254		- // Prepare RAG context for streaming response
8255		- $rag_context_for_storage = null;
8256		- $has_rag_data = $this->last_similarity_analysis !== null && !empty($this->last_similarity_analysis['top_matches']);
8257		- $has_action_data = isset($this->last_action_analysis) && !empty($this->last_action_analysis);
8258		-
8259		- if ($has_rag_data || $has_action_data) {
8260		- $rag_context_for_storage = [];
8261		-
8262		- if ($has_rag_data) {
8263		- $rag_context_for_storage['top_matches'] = $this->last_similarity_analysis['top_matches'];
8264		- $rag_context_for_storage['approved_urls'] = $this->current_valid_urls ?? [];
8265		- $rag_context_for_storage['similarity_threshold'] = $this->last_similarity_analysis['threshold_used'] ?? 0.35;
8266		- $rag_context_for_storage['knowledge_base_type'] = $this->last_similarity_analysis['knowledge_base_type'] ?? 'WordPress Database';
8267		- $rag_context_for_storage['total_documents_checked'] = $this->last_similarity_analysis['total_checked'] ?? 0;
8268		- }
8269		-
8270		- if ($has_action_data) {
8271		- $rag_context_for_storage['action_analysis'] = $this->last_action_analysis;
8272		- }
8273		- }
8274		- $this->mxchat_save_chat_message($session_id, 'bot', $full_response, null, $rag_context_for_storage);
	4916	+ $this->mxchat_save_chat_message($session_id, 'bot', $full_response);
8275	4917	}
8276	4918
8277	4919	return true; // Indicate streaming completed successfully
8278	4920
		@@ -8277,9 +4919,9 @@
8277	4919	return true; // Indicate streaming completed successfully
8278	4920
8279	4921	} catch (Exception $e) {
8280	4922	//error_log("MxChat Claude streaming exception: " . $e->getMessage());
8281		-
	4923	+
8282	4924	// Fallback to regular response on exception
8283	4925	$regular_response = $this->mxchat_generate_response_claude(
8284	4926	$selected_model,
8285	4927	$claude_api_key,
		@@ -8285,35 +4927,20 @@
8285	4927	$claude_api_key,
8286	4928	$conversation_history,
8287	4929	$relevant_content
8288	4930	);
8289		-
8290		- // FIXED: Check if regular response returned an error
8291		- if (is_array($regular_response) && isset($regular_response['error'])) {
8292		- // Send error in SSE format since we're in streaming mode
8293		- echo "data: " . json_encode([
8294		- 'error' => true,
8295		- 'error_message' => $regular_response['error'],
8296		- 'error_code' => $regular_response['error_code'] ?? 'api_error',
8297		- 'text' => $regular_response['error'],
8298		- 'message' => $regular_response['error']
8299		- ]) . "\n\n";
8300		- echo "data: [DONE]\n\n";
8301		- flush();
8302		- return true;
8303		- }
8304		-
	4931	+
8305	4932	$response_data = [
8306	4933	'text' => $regular_response,
8307	4934	'html' => '',
8308	4935	'session_id' => $session_id
8309	4936	];
8310		-
	4937	+
8311	4938	if ($testing_data !== null) {
8312	4939	$response_data['testing_data'] = $testing_data;
8313	4940	//error_log("MxChat Testing: Added testing data to Claude exception fallback");
8314	4941	}
8315		-
	4942	+
8316	4943	header('Content-Type: application/json');
8317	4944	echo json_encode($response_data);
8318	4945	return true;
8319	4946	}
		@@ -8323,9 +4950,9 @@
8323	4950	// Get bot ID from session or request
8324	4951	$bot_id = $this->get_current_bot_id($session_id);
8325	4952
8326	4953	// Get system prompt instructions using centralized function
8327		- $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
	4954	+ $system_prompt_instructions = $this->get_system_instructions($bot_id);
8328	4955
8329	4956	// Ensure conversation_history is an array
8330	4957	if (!is_array($conversation_history)) {
8331	4958	$conversation_history = array();
		@@ -8365,13 +4992,8 @@
8365	4992	$conversation_history,
8366	4993	$relevant_content
8367	4994	);
8368	4995
8369		- // Save bot response to transcript
8370		- if (!empty($regular_response) && !empty($session_id)) {
8371		- $this->mxchat_save_chat_message($session_id, 'bot', $regular_response);
8372		- }
8373		-
8374	4996	$response_data = [
8375	4997	'text' => $regular_response,
8376	4998	'html' => '',
8377	4999	'session_id' => $session_id
		@@ -8394,11 +5016,8 @@
8394	5016	'temperature' => 0.8,
8395	5017	'stream' => true
8396	5018	]);
8397	5019
8398		- // Setup streaming headers now that we know we're actually streaming
8399		- $this->setup_streaming_headers();
8400		-
8401	5020	// Use cURL for streaming support
8402	5021	$ch = curl_init();
8403	5022	curl_setopt($ch, CURLOPT_URL, 'https://api.x.ai/v1/chat/completions');
8404	5023	curl_setopt($ch, CURLOPT_RETURNTRANSFER, false);
		@@ -8499,39 +5118,19 @@
8499	5118	return true;
8500	5119	}
8501	5120
8502	5121	curl_close($ch);
8503		-
	5122	+
8504	5123	// Save the complete response to maintain chat persistence
8505	5124	if (!empty($full_response) && !empty($session_id)) {
8506		- // Prepare RAG context for streaming response
8507		- $rag_context_for_storage = null;
8508		- $has_rag_data = $this->last_similarity_analysis !== null && !empty($this->last_similarity_analysis['top_matches']);
8509		- $has_action_data = isset($this->last_action_analysis) && !empty($this->last_action_analysis);
8510		-
8511		- if ($has_rag_data || $has_action_data) {
8512		- $rag_context_for_storage = [];
8513		-
8514		- if ($has_rag_data) {
8515		- $rag_context_for_storage['top_matches'] = $this->last_similarity_analysis['top_matches'];
8516		- $rag_context_for_storage['approved_urls'] = $this->current_valid_urls ?? [];
8517		- $rag_context_for_storage['similarity_threshold'] = $this->last_similarity_analysis['threshold_used'] ?? 0.35;
8518		- $rag_context_for_storage['knowledge_base_type'] = $this->last_similarity_analysis['knowledge_base_type'] ?? 'WordPress Database';
8519		- $rag_context_for_storage['total_documents_checked'] = $this->last_similarity_analysis['total_checked'] ?? 0;
8520		- }
8521		-
8522		- if ($has_action_data) {
8523		- $rag_context_for_storage['action_analysis'] = $this->last_action_analysis;
8524		- }
8525		- }
8526		- $this->mxchat_save_chat_message($session_id, 'bot', $full_response, null, $rag_context_for_storage);
	5125	+ $this->mxchat_save_chat_message($session_id, 'bot', $full_response);
8527	5126	}
8528		-
	5127	+
8529	5128	return true; // Indicate streaming completed successfully
8530		-
	5129	+
8531	5130	} catch (Exception $e) {
8532	5131	//error_log("MxChat X.AI streaming exception: " . $e->getMessage());
8533		-
	5132	+
8534	5133	// Fallback to regular response
8535	5134	$regular_response = $this->mxchat_generate_response_xai(
8536	5135	$selected_model,
8537	5136	$xai_api_key,
		@@ -8560,9 +5159,9 @@
8560	5159	// Get bot ID from session or request
8561	5160	$bot_id = $this->get_current_bot_id($session_id);
8562	5161
8563	5162	// Get system prompt instructions using centralized function
8564		- $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
	5163	+ $system_prompt_instructions = $this->get_system_instructions($bot_id);
8565	5164
8566	5165	// Ensure conversation_history is an array
8567	5166	if (!is_array($conversation_history)) {
8568	5167	$conversation_history = array();
		@@ -8602,13 +5201,8 @@
8602	5201	$conversation_history,
8603	5202	$relevant_content
8604	5203	);
8605	5204
8606		- // Save bot response to transcript
8607		- if (!empty($regular_response) && !empty($session_id)) {
8608		- $this->mxchat_save_chat_message($session_id, 'bot', $regular_response);
8609		- }
8610		-
8611	5205	$response_data = [
8612	5206	'text' => $regular_response,
8613	5207	'html' => '',
8614	5208	'session_id' => $session_id
		@@ -8631,11 +5225,8 @@
8631	5225	'temperature' => 0.8,
8632	5226	'stream' => true
8633	5227	]);
8634	5228
8635		- // Setup streaming headers now that we know we're actually streaming
8636		- $this->setup_streaming_headers();
8637		-
8638	5229	// Use cURL for streaming support
8639	5230	$ch = curl_init();
8640	5231	curl_setopt($ch, CURLOPT_URL, 'https://api.deepseek.com/v1/chat/completions');
8641	5232	curl_setopt($ch, CURLOPT_RETURNTRANSFER, false);
		@@ -8750,39 +5341,19 @@
8750	5341	return true;
8751	5342	}
8752	5343
8753	5344	curl_close($ch);
8754		-
	5345	+
8755	5346	// Save the complete response to maintain chat persistence
8756	5347	if (!empty($full_response) && !empty($session_id)) {
8757		- // Prepare RAG context for streaming response
8758		- $rag_context_for_storage = null;
8759		- $has_rag_data = $this->last_similarity_analysis !== null && !empty($this->last_similarity_analysis['top_matches']);
8760		- $has_action_data = isset($this->last_action_analysis) && !empty($this->last_action_analysis);
8761		-
8762		- if ($has_rag_data || $has_action_data) {
8763		- $rag_context_for_storage = [];
8764		-
8765		- if ($has_rag_data) {
8766		- $rag_context_for_storage['top_matches'] = $this->last_similarity_analysis['top_matches'];
8767		- $rag_context_for_storage['approved_urls'] = $this->current_valid_urls ?? [];
8768		- $rag_context_for_storage['similarity_threshold'] = $this->last_similarity_analysis['threshold_used'] ?? 0.35;
8769		- $rag_context_for_storage['knowledge_base_type'] = $this->last_similarity_analysis['knowledge_base_type'] ?? 'WordPress Database';
8770		- $rag_context_for_storage['total_documents_checked'] = $this->last_similarity_analysis['total_checked'] ?? 0;
8771		- }
8772		-
8773		- if ($has_action_data) {
8774		- $rag_context_for_storage['action_analysis'] = $this->last_action_analysis;
8775		- }
8776		- }
8777		- $this->mxchat_save_chat_message($session_id, 'bot', $full_response, null, $rag_context_for_storage);
	5348	+ $this->mxchat_save_chat_message($session_id, 'bot', $full_response);
8778	5349	}
8779		-
	5350	+
8780	5351	return true; // Indicate streaming completed successfully
8781		-
	5352	+
8782	5353	} catch (Exception $e) {
8783	5354	//error_log("MxChat DeepSeek streaming exception: " . $e->getMessage());
8784		-
	5355	+
8785	5356	// Fallback to regular response
8786	5357	$regular_response = $this->mxchat_generate_response_deepseek(
8787	5358	$selected_model,
8788	5359	$deepseek_api_key,
		@@ -8816,112 +5387,8 @@
8816	5387	return true;
8817	5388	}
8818	5389	}
8819	5390
8820		-
8821		-private function mxchat_generate_response_openrouter($selected_model, $openrouter_api_key, $conversation_history, $relevant_content) {
8822		- try {
8823		- if (!is_array($conversation_history)) {
8824		- $conversation_history = array();
8825		- }
8826		-
8827		- $bot_id = $this->get_current_bot_id('');
8828		- $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
8829		-
8830		- $formatted_conversation = array();
8831		-
8832		- $formatted_conversation[] = array(
8833		- 'role' => 'system',
8834		- 'content' => $system_prompt_instructions . " " . $relevant_content
8835		- );
8836		-
8837		- foreach ($conversation_history as $message) {
8838		- if (is_array($message) && isset($message['role']) && isset($message['content'])) {
8839		- $role = $message['role'];
8840		-
8841		- if ($role === 'bot' || $role === 'agent') {
8842		- $role = 'assistant';
8843		- }
8844		- if (!in_array($role, ['system', 'assistant', 'user'])) {
8845		- $role = 'user';
8846		- }
8847		-
8848		- $formatted_conversation[] = array(
8849		- 'role' => $role,
8850		- 'content' => $message['content']
8851		- );
8852		- }
8853		- }
8854		-
8855		- $body = json_encode([
8856		- 'model' => $selected_model,
8857		- 'messages' => $formatted_conversation,
8858		- 'temperature' => 1,
8859		- ]);
8860		-
8861		- $args = [
8862		- 'body' => $body,
8863		- 'headers' => [
8864		- 'Content-Type' => 'application/json',
8865		- 'Authorization' => 'Bearer ' . $openrouter_api_key,
8866		- 'HTTP-Referer' => home_url(),
8867		- 'X-Title' => get_bloginfo('name'),
8868		- ],
8869		- 'timeout' => 60,
8870		- 'redirection' => 5,
8871		- 'blocking' => true,
8872		- 'httpversion' => '1.0',
8873		- 'sslverify' => true,
8874		- ];
8875		-
8876		- $response = wp_remote_post('https://openrouter.ai/api/v1/chat/completions', $args);
8877		-
8878		- if (is_wp_error($response)) {
8879		- $error_message = $response->get_error_message();
8880		- return [
8881		- 'error' => esc_html__('Connection error when contacting OpenRouter: ', 'mxchat') . esc_html($error_message),
8882		- 'error_code' => 'openrouter_connection_error',
8883		- 'provider' => 'openrouter'
8884		- ];
8885		- }
8886		-
8887		- $status_code = wp_remote_retrieve_response_code($response);
8888		- if ($status_code !== 200) {
8889		- $response_body = wp_remote_retrieve_body($response);
8890		- $decoded_response = json_decode($response_body, true);
8891		-
8892		- $error_message = isset($decoded_response['error']['message'])
8893		- ? $decoded_response['error']['message']
8894		- : 'HTTP Error ' . $status_code;
8895		-
8896		- return [
8897		- 'error' => esc_html__('OpenRouter API error: ', 'mxchat') . esc_html($error_message),
8898		- 'error_code' => 'openrouter_api_error',
8899		- 'provider' => 'openrouter',
8900		- 'status_code' => $status_code
8901		- ];
8902		- }
8903		-
8904		- $response_body = wp_remote_retrieve_body($response);
8905		- $decoded_response = json_decode($response_body, true);
8906		-
8907		- if (isset($decoded_response['choices'][0]['message']['content'])) {
8908		- return trim($decoded_response['choices'][0]['message']['content']);
8909		- } else {
8910		- return [
8911		- 'error' => esc_html__('Unexpected response format from OpenRouter.', 'mxchat'),
8912		- 'error_code' => 'openrouter_response_format_error',
8913		- 'provider' => 'openrouter'
8914		- ];
8915		- }
8916		- } catch (Exception $e) {
8917		- return [
8918		- 'error' => esc_html__('System error when processing OpenRouter request: ', 'mxchat') . esc_html($e->getMessage()),
8919		- 'error_code' => 'openrouter_exception',
8920		- 'provider' => 'openrouter'
8921		- ];
8922		- }
8923		-}
8924	5391	private function mxchat_generate_response_claude($selected_model, $claude_api_key, $conversation_history, $relevant_content) {
8925	5392
8926	5393	// Get bot ID from session or request
8927	5394	$bot_id = $this->get_current_bot_id($session_id);
		@@ -8926,9 +5393,9 @@
8926	5393	// Get bot ID from session or request
8927	5394	$bot_id = $this->get_current_bot_id($session_id);
8928	5395
8929	5396	// Get system prompt instructions using centralized function
8930		- $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
	5397	+ $system_prompt_instructions = $this->get_system_instructions($bot_id);
8931	5398
8932	5399	// Clean and validate conversation history
8933	5400	foreach ($conversation_history as &$message) {
8934	5401	// Convert bot and agent roles to assistant
		@@ -9032,12 +5499,12 @@
9032	5499	$conversation_history = array();
9033	5500	}
9034	5501
9035	5502	// Get bot ID from session or request
9036		- $bot_id = $this->get_current_bot_id('');
	5503	+ $bot_id = $this->get_current_bot_id($session_id);
9037	5504
9038	5505	// Get system prompt instructions using centralized function
9039		- $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
	5506	+ $system_prompt_instructions = $this->get_system_instructions($bot_id);
9040	5507
9041	5508	// Create a new array for the formatted conversation
9042	5509	$formatted_conversation = array();
9043	5510
		@@ -9066,44 +5533,15 @@
9066	5533	);
9067	5534	}
9068	5535	}
9069	5536
9070		- // Check if this is a GPT-5 model (supports reasoning_effort parameter)
9071		- $is_gpt5_model = (
9072		- strpos($selected_model, 'gpt-5') === 0 ||
9073		- $selected_model === 'gpt-5.2' ||
9074		- $selected_model === 'gpt-5.1-2025-11-13' ||
9075		- $selected_model === 'gpt-5' ||
9076		- $selected_model === 'gpt-5-mini' ||
9077		- $selected_model === 'gpt-5-nano'
9078		- );
9079		-
9080		- // Build request body with optimal settings for fast responses
9081		- $request_body = [
	5537	+ $body = json_encode([
9082	5538	'model' => $selected_model,
9083	5539	'messages' => $formatted_conversation,
9084	5540	'temperature' => 1,
9085	5541	'stream' => false
9086		- ];
	5542	+ ]);
9087	5543
9088		- // Add reasoning_effort only for GPT-5 models that support it
9089		- // These chat models don't support reasoning_effort parameter
9090		- $no_reasoning_models = array('gpt-5.2', 'gpt-5.1-chat-latest', 'gpt-5.3-chat-latest', 'gpt-5.4-mini', 'gpt-5.4-nano');
9091		- if ($is_gpt5_model && !in_array($selected_model, $no_reasoning_models, true)) {
9092		- // GPT-5.1 uses 'low' instead of 'minimal'
9093		- if ($selected_model === 'gpt-5.1-2025-11-13') {
9094		- $request_body['reasoning_effort'] = 'low';
9095		- } elseif ($selected_model === 'gpt-5.5') {
9096		- $request_body['reasoning_effort'] = 'none';
9097		- } elseif ($selected_model === 'gpt-5.4') {
9098		- $request_body['reasoning_effort'] = 'none';
9099		- } else {
9100		- $request_body['reasoning_effort'] = 'minimal';
9101		- }
9102		- }
9103		-
9104		- $body = json_encode($request_body);
9105		-
9106	5544	$args = [
9107	5545	'body' => $body,
9108	5546	'headers' => [
9109	5547	'Content-Type' => 'application/json',
		@@ -9119,8 +5557,9 @@
9119	5557	$response = wp_remote_post('https://api.openai.com/v1/chat/completions', $args);
9120	5558
9121	5559	if (is_wp_error($response)) {
9122	5560	$error_message = $response->get_error_message();
	5561	+ //error_log('OpenAI API Error: ' . $error_message);
9123	5562	return [
9124	5563	'error' => esc_html__('Connection error when contacting OpenAI: ', 'mxchat') . esc_html($error_message),
9125	5564	'error_code' => 'openai_connection_error',
9126	5565	'provider' => 'openai'
		@@ -9139,8 +5578,10 @@
9139	5578	$error_type = isset($decoded_response['error']['type'])
9140	5579	? $decoded_response['error']['type']
9141	5580	: 'unknown';
9142	5581
	5582	+ //error_log('OpenAI API HTTP Error: ' . $status_code . ' - ' . $error_message);
	5583	+
9143	5584	// Handle specific error types
9144	5585	switch ($error_type) {
9145	5586	case 'invalid_request_error':
9146	5587	if (strpos($error_message, 'API key') !== false) {
		@@ -9188,8 +5629,9 @@
9188	5629
9189	5630	if (isset($decoded_response['choices'][0]['message']['content'])) {
9190	5631	return trim($decoded_response['choices'][0]['message']['content']);
9191	5632	} else {
	5633	+ //error_log('OpenAI API Response Format Error: ' . print_r($decoded_response, true));
9192	5634	return [
9193	5635	'error' => esc_html__('Unexpected response format from OpenAI.', 'mxchat'),
9194	5636	'error_code' => 'openai_response_format_error',
9195	5637	'provider' => 'openai'
		@@ -9195,8 +5637,9 @@
9195	5637	'provider' => 'openai'
9196	5638	];
9197	5639	}
9198	5640	} catch (Exception $e) {
	5641	+ //error_log('OpenAI Exception: ' . $e->getMessage());
9199	5642	return [
9200	5643	'error' => esc_html__('System error when processing OpenAI request: ', 'mxchat') . esc_html($e->getMessage()),
9201	5644	'error_code' => 'openai_exception',
9202	5645	'provider' => 'openai'
		@@ -9202,9 +5645,8 @@
9202	5645	'provider' => 'openai'
9203	5646	];
9204	5647	}
9205	5648	}
9206		-
9207	5649	private function mxchat_generate_response_xai($selected_model, $xai_api_key, $conversation_history, $relevant_content) {
9208	5650	try {
9209	5651	// Get bot ID from session or request
9210	5652	$bot_id = $this->get_current_bot_id($session_id);
		@@ -9209,9 +5651,9 @@
9209	5651	// Get bot ID from session or request
9210	5652	$bot_id = $this->get_current_bot_id($session_id);
9211	5653
9212	5654	// Get system prompt instructions using centralized function
9213		- $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
	5655	+ $system_prompt_instructions = $this->get_system_instructions($bot_id);
9214	5656
9215	5657	// Add system prompt to relevant content
9216	5658	$content_with_instructions = $system_prompt_instructions . " " . $relevant_content;
9217	5659
		@@ -9408,9 +5850,9 @@
9408	5850	// Get bot ID from session or request
9409	5851	$bot_id = $this->get_current_bot_id($session_id);
9410	5852
9411	5853	// Get system prompt instructions using centralized function
9412		- $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
	5854	+ $system_prompt_instructions = $this->get_system_instructions($bot_id);
9413	5855
9414	5856	// Create a new array for the formatted conversation
9415	5857	$formatted_conversation = array();
9416	5858
		@@ -9567,9 +6009,9 @@
9567	6009	// Get bot ID from session or request
9568	6010	$bot_id = $this->get_current_bot_id($session_id);
9569	6011
9570	6012	// Get system prompt instructions using centralized function
9571		- $system_prompt_instructions = $this->get_system_instructions($bot_id, $session_id);
	6013	+ $system_prompt_instructions = $this->get_system_instructions($bot_id);
9572	6014
9573	6015	// Add system prompt to relevant content
9574	6016	$content_with_instructions = $system_prompt_instructions . " " . $relevant_content;
9575	6017
		@@ -9665,11 +6107,9 @@
9665	6107	]
9666	6108	]);
9667	6109
9668	6110	// Prepare the API endpoint
9669		- // Use v1beta for preview models (Gemini 3, experimental), v1 for stable models
9670		- $api_version = (strpos($selected_model, 'preview') !== false || strpos($selected_model, 'exp') !== false) ? 'v1beta' : 'v1';
9671		- $api_endpoint = 'https://generativelanguage.googleapis.com/' . $api_version . '/models/' . $selected_model . ':generateContent?key=' . $gemini_api_key;
	6111	+ $api_endpoint = 'https://generativelanguage.googleapis.com/v1/models/' . $selected_model . ':generateContent?key=' . $gemini_api_key;
9672	6112
9673	6113	// Set up the API request
9674	6114	$args = [
9675	6115	'body' => $body,
		@@ -9711,9 +6151,9 @@
9711	6151
9712	6152
9713	6153	public function test_streaming_request() {
9714	6154	$options = get_option('mxchat_options', []);
9715		- $model = $options['model'] ?? 'gpt-5.1-chat-latest';
	6155	+ $model = $options['model'] ?? 'gpt-4o';
9716	6156
9717	6157	// Detect provider from model prefix
9718	6158	$provider = strtolower(explode('-', $model)[0]);
9719	6159
		@@ -9896,54 +6336,35 @@
9896	6336	}
9897	6337
9898	6338
9899	6339	public function mxchat_enqueue_scripts_styles() {
9900		- // Fetch options from the database first to check loading strategy
9901		- $this->options = get_option('mxchat_options');
9902		- $loading_strategy = isset($this->options['script_loading_strategy']) ? $this->options['script_loading_strategy'] : 'default';
9903		-
9904		- // Always enqueue CSS immediately
	6340	+ // Define version numbers for the styles and scripts
	6341	+ $chat_style_version = '2.4.4';
	6342	+ $chat_script_version = '2.4.4';
	6343	+ // Enqueue the script
	6344	+ wp_enqueue_script(
	6345	+ 'mxchat-chat-js',
	6346	+ plugin_dir_url(__FILE__) . '../js/chat-script.js',
	6347	+ array('jquery'),
	6348	+ $chat_script_version,
	6349	+ true
	6350	+ );
	6351	+ // Enqueue the CSS
9905	6352	wp_enqueue_style(
9906	6353	'mxchat-chat-css',
9907	6354	plugin_dir_url(__FILE__) . '../css/chat-style.css',
9908	6355	array(),
9909		- MXCHAT_VERSION
	6356	+ $chat_style_version
9910	6357	);
9911		-
9912		- // Handle script loading based on strategy
9913		- if ($loading_strategy === 'default' || $loading_strategy === 'defer') {
9914		- // Enqueue the script normally
9915		- wp_enqueue_script(
9916		- 'mxchat-chat-js',
9917		- plugin_dir_url(__FILE__) . '../js/chat-script.js',
9918		- array('jquery'),
9919		- MXCHAT_VERSION,
9920		- true
9921		- );
9922		-
9923		- // Add defer attribute if strategy is 'defer'
9924		- if ($loading_strategy === 'defer') {
9925		- wp_script_add_data('mxchat-chat-js', 'strategy', 'defer');
9926		- }
9927		- } else {
9928		- // For delay or interaction-based loading, we'll use a custom loader
9929		- // Don't enqueue the main script - we'll load it dynamically
9930		- add_action('wp_footer', array($this, 'mxchat_output_delayed_script_loader'), 99);
9931		- }
9932		-
	6358	+ // Fetch options from the database
	6359	+ $this->options = get_option('mxchat_options');
9933	6360	$prompts_options = get_option('mxchat_prompts_options', array());
9934		-
9935		- // Check if AI theme is active - if so, skip inline colors in JavaScript
9936		- $theme_options = get_option('mxchat_theme_options', array());
9937		- $ai_theme_active = !empty($theme_options['active_ai_theme_css']);
9938		- $has_bot_theme_assignments = !empty($theme_options['bot_theme_assignments']);
9939		- $skip_inline_colors = $ai_theme_active || $has_bot_theme_assignments;
9940		-
	6361	+
9941	6362	// Prepare settings for JavaScript
9942	6363	$style_settings = array(
9943	6364	'ajax_url' => admin_url('admin-ajax.php'),
9944	6365	'nonce' => wp_create_nonce('mxchat_chat_nonce'),
9945		- 'model' => isset($this->options['model']) ? $this->options['model'] : 'gpt-5.1-chat-latest',
	6366	+ 'model' => isset($this->options['model']) ? $this->options['model'] : 'gpt-4o',
9946	6367	'enable_streaming_toggle' => isset($this->options['enable_streaming_toggle']) ? $this->options['enable_streaming_toggle'] : 'on',
9947	6368	'contextual_awareness_toggle' => isset($this->options['contextual_awareness_toggle']) ? $this->options['contextual_awareness_toggle'] : 'off',
9948	6369	'link_target_toggle' => $this->options['link_target_toggle'] ?? 'off',
9949	6370	'rate_limit_message' => $this->options['rate_limit_message'] ?? 'Rate limit exceeded. Please try again later.',
		@@ -9970,172 +6391,15 @@
9970	6391	'use_pinecone' => $prompts_options['mxchat_use_pinecone'] ?? '0',
9971	6392	'email_collection_enabled' => $this->options['enable_email_block'] ?? 'off', // FIXED
9972	6393	'initial_email_state' => null, // Also fixed this undefined variable
9973	6394	'skip_email_check' => true,
9974		- 'pinecone_enabled' => isset($prompts_options['mxchat_use_pinecone']) && $prompts_options['mxchat_use_pinecone'] === '1',
9975		- 'skip_inline_colors' => $skip_inline_colors,
9976		- 'bot_theme_assignments' => $theme_options['bot_theme_assignments'] ?? array(),
9977		- 'print_button_enabled' => $this->options['print_button_enabled'] ?? 'on',
9978		- 'print_button_label' => esc_html__('Download Transcript', 'mxchat'),
9979		- 'print_header_title' => esc_html(get_bloginfo('name')) . ' — ' . esc_html__('Chat transcript', 'mxchat'),
9980		- 'satisfaction_rating_enabled' => apply_filters(
9981		- 'mxchat_satisfaction_rating_enabled',
9982		- ($this->options['satisfaction_rating_enabled'] ?? 'off') === 'on'
9983		- ),
9984		- 'satisfaction_rating_idle_seconds' => max(5, min(600, intval($this->options['satisfaction_rating_idle_seconds'] ?? 60))),
9985		- 'satisfaction_rating_copy' => array(
9986		- 'question' => !empty($this->options['satisfaction_rating_question']) ? esc_html($this->options['satisfaction_rating_question']) : esc_html__('Was this helpful?', 'mxchat'),
9987		- 'helpful' => esc_html__('Helpful', 'mxchat'),
9988		- 'not_helpful' => esc_html__('Not helpful', 'mxchat'),
9989		- 'dismiss' => esc_html__('Dismiss', 'mxchat'),
9990		- 'thanks' => !empty($this->options['satisfaction_rating_thanks']) ? esc_html($this->options['satisfaction_rating_thanks']) : esc_html__('Thanks! Anything we should improve? (optional)', 'mxchat'),
9991		- 'placeholder' => !empty($this->options['satisfaction_rating_placeholder']) ? esc_html($this->options['satisfaction_rating_placeholder']) : esc_html__('Tell us what could be better…', 'mxchat'),
9992		- 'send' => esc_html__('Send', 'mxchat'),
9993		- 'skip' => esc_html__('Skip', 'mxchat'),
9994		- 'saved' => !empty($this->options['satisfaction_rating_saved']) ? esc_html($this->options['satisfaction_rating_saved']) : esc_html__('Thanks for the feedback.', 'mxchat'),
9995		- ),
	6395	+ 'pinecone_enabled' => isset($prompts_options['mxchat_use_pinecone']) && $prompts_options['mxchat_use_pinecone'] === '1'
9996	6396	);
9997		-
9998		- // For normal/defer loading, use wp_localize_script
9999		- // For delayed loading, we store settings in a transient to be output inline
10000		- if ($loading_strategy === 'default' || $loading_strategy === 'defer') {
10001		- wp_localize_script('mxchat-chat-js', 'mxchatChat', $style_settings);
10002		- } else {
10003		- // Store settings for the delayed loader to use
10004		- set_transient('mxchat_delayed_settings_' . get_current_user_id(), $style_settings, 60);
10005		- }
	6397	+ // Pass the settings to the script
	6398	+ wp_localize_script('mxchat-chat-js', 'mxchatChat', $style_settings);
10006	6399	}
10007	6400
10008		-/**
10009		- * Output the delayed script loader for performance optimization
10010		- */
10011		-public function mxchat_output_delayed_script_loader() {
10012		- $this->options = get_option('mxchat_options');
10013		- $loading_strategy = isset($this->options['script_loading_strategy']) ? $this->options['script_loading_strategy'] : 'default';
10014		- $script_url = plugin_dir_url(__FILE__) . '../js/chat-script.js?ver=' . MXCHAT_VERSION;
10015	6401
10016		- // Get the stored settings
10017		- $prompts_options = get_option('mxchat_prompts_options', array());
10018		- $theme_options = get_option('mxchat_theme_options', array());
10019		- $ai_theme_active = !empty($theme_options['active_ai_theme_css']);
10020		- $has_bot_theme_assignments = !empty($theme_options['bot_theme_assignments']);
10021		- $skip_inline_colors = $ai_theme_active || $has_bot_theme_assignments;
10022		-
10023		- $style_settings = array(
10024		- 'ajax_url' => admin_url('admin-ajax.php'),
10025		- 'nonce' => wp_create_nonce('mxchat_chat_nonce'),
10026		- 'model' => isset($this->options['model']) ? $this->options['model'] : 'gpt-5.1-chat-latest',
10027		- 'enable_streaming_toggle' => isset($this->options['enable_streaming_toggle']) ? $this->options['enable_streaming_toggle'] : 'on',
10028		- 'contextual_awareness_toggle' => isset($this->options['contextual_awareness_toggle']) ? $this->options['contextual_awareness_toggle'] : 'off',
10029		- 'link_target_toggle' => $this->options['link_target_toggle'] ?? 'off',
10030		- 'rate_limit_message' => $this->options['rate_limit_message'] ?? 'Rate limit exceeded. Please try again later.',
10031		- 'complianz_toggle' => isset($this->options['complianz_toggle']) && $this->options['complianz_toggle'] === 'on',
10032		- 'user_message_bg_color' => $this->options['user_message_bg_color'] ?? '#fff',
10033		- 'user_message_font_color' => $this->options['user_message_font_color'] ?? '#212121',
10034		- 'bot_message_bg_color' => $this->options['bot_message_bg_color'] ?? '#212121',
10035		- 'bot_message_font_color' => $this->options['bot_message_font_color'] ?? '#fff',
10036		- 'top_bar_bg_color' => $this->options['top_bar_bg_color'] ?? '#212121',
10037		- 'send_button_font_color' => $this->options['send_button_font_color'] ?? '#212121',
10038		- 'close_button_color' => $this->options['close_button_color'] ?? '#fff',
10039		- 'chatbot_background_color' => $this->options['chatbot_background_color'] ?? '#212121',
10040		- 'chatbot_bg_color' => $this->options['chatbot_bg_color'] ?? '#fff',
10041		- 'icon_color' => $this->options['icon_color'] ?? '#fff',
10042		- 'chat_input_font_color' => $this->options['chat_input_font_color'] ?? '#212121',
10043		- 'chat_persistence_toggle' => $this->options['chat_persistence_toggle'] ?? 'off',
10044		- 'appendWidgetToBody' => $this->options['append_to_body'] ?? 'off',
10045		- 'live_agent_message_bg_color' => $this->options['live_agent_message_bg_color'] ?? '#ffffff',
10046		- 'live_agent_message_font_color' => $this->options['live_agent_message_font_color'] ?? '#333333',
10047		- 'chat_toolbar_toggle' => $this->options['chat_toolbar_toggle'] ?? 'off',
10048		- 'mode_indicator_bg_color' => $this->options['mode_indicator_bg_color'] ?? '#767676',
10049		- 'mode_indicator_font_color' => $this->options['mode_indicator_font_color'] ?? '#ffffff',
10050		- 'toolbar_icon_color' => $this->options['toolbar_icon_color'] ?? '#212121',
10051		- 'use_pinecone' => $prompts_options['mxchat_use_pinecone'] ?? '0',
10052		- 'email_collection_enabled' => $this->options['enable_email_block'] ?? 'off',
10053		- 'initial_email_state' => null,
10054		- 'skip_email_check' => true,
10055		- 'pinecone_enabled' => isset($prompts_options['mxchat_use_pinecone']) && $prompts_options['mxchat_use_pinecone'] === '1',
10056		- 'skip_inline_colors' => $skip_inline_colors,
10057		- 'bot_theme_assignments' => $theme_options['bot_theme_assignments'] ?? array(),
10058		- 'print_button_enabled' => $this->options['print_button_enabled'] ?? 'on',
10059		- 'print_button_label' => esc_html__('Download Transcript', 'mxchat'),
10060		- 'print_header_title' => esc_html(get_bloginfo('name')) . ' — ' . esc_html__('Chat transcript', 'mxchat'),
10061		- 'satisfaction_rating_enabled' => apply_filters(
10062		- 'mxchat_satisfaction_rating_enabled',
10063		- ($this->options['satisfaction_rating_enabled'] ?? 'off') === 'on'
10064		- ),
10065		- 'satisfaction_rating_idle_seconds' => max(5, min(600, intval($this->options['satisfaction_rating_idle_seconds'] ?? 60))),
10066		- 'satisfaction_rating_copy' => array(
10067		- 'question' => !empty($this->options['satisfaction_rating_question']) ? esc_html($this->options['satisfaction_rating_question']) : esc_html__('Was this helpful?', 'mxchat'),
10068		- 'helpful' => esc_html__('Helpful', 'mxchat'),
10069		- 'not_helpful' => esc_html__('Not helpful', 'mxchat'),
10070		- 'dismiss' => esc_html__('Dismiss', 'mxchat'),
10071		- 'thanks' => !empty($this->options['satisfaction_rating_thanks']) ? esc_html($this->options['satisfaction_rating_thanks']) : esc_html__('Thanks! Anything we should improve? (optional)', 'mxchat'),
10072		- 'placeholder' => !empty($this->options['satisfaction_rating_placeholder']) ? esc_html($this->options['satisfaction_rating_placeholder']) : esc_html__('Tell us what could be better…', 'mxchat'),
10073		- 'send' => esc_html__('Send', 'mxchat'),
10074		- 'skip' => esc_html__('Skip', 'mxchat'),
10075		- 'saved' => !empty($this->options['satisfaction_rating_saved']) ? esc_html($this->options['satisfaction_rating_saved']) : esc_html__('Thanks for the feedback.', 'mxchat'),
10076		- ),
10077		- );
10078		-
10079		- // Determine delay time based on strategy
10080		- $delay_ms = 0;
10081		- switch ($loading_strategy) {
10082		- case 'delay_1s':
10083		- $delay_ms = 1000;
10084		- break;
10085		- case 'delay_3s':
10086		- $delay_ms = 3000;
10087		- break;
10088		- case 'delay_5s':
10089		- $delay_ms = 5000;
10090		- break;
10091		- }
10092		-
10093		- ?>
10094		- <script type="text/javascript">
10095		- (function() {
10096		- var mxchatLoaded = false;
10097		- var mxchatChat = <?php echo wp_json_encode($style_settings); ?>;
10098		- window.mxchatChat = mxchatChat;
10099		-
10100		- function loadMxChatScript() {
10101		- if (mxchatLoaded) return;
10102		- mxchatLoaded = true;
10103		-
10104		- function appendChatScript() {
10105		- var script = document.createElement('script');
10106		- script.src = <?php echo wp_json_encode($script_url); ?>;
10107		- script.type = 'text/javascript';
10108		- document.body.appendChild(script);
10109		- }
10110		-
10111		- if (typeof jQuery !== 'undefined') {
10112		- appendChatScript();
10113		- } else {
10114		- var jq = document.createElement('script');
10115		- jq.src = <?php echo wp_json_encode(includes_url('js/jquery/jquery.min.js')); ?>;
10116		- jq.onload = appendChatScript;
10117		- document.body.appendChild(jq);
10118		- }
10119		- }
10120		-
10121		- <?php if ($loading_strategy === 'on_interaction'): ?>
10122		- // Load on user interaction
10123		- var events = ['scroll', 'mousemove', 'touchstart', 'keydown', 'click'];
10124		- events.forEach(function(evt) {
10125		- window.addEventListener(evt, loadMxChatScript, {once: true, passive: true});
10126		- });
10127		- // Fallback: load after 8 seconds if no interaction
10128		- setTimeout(loadMxChatScript, 8000);
10129		- <?php else: ?>
10130		- // Load after specified delay
10131		- setTimeout(loadMxChatScript, <?php echo intval($delay_ms); ?>);
10132		- <?php endif; ?>
10133		- })();
10134		- </script>
10135		- <?php
10136		-}
10137		-
10138	6402	/**
10139	6403	* Setup the cron jobs for rate limits with guard against multiple calls
10140	6404	*/
10141	6405	public function setup_rate_limit_cron_jobs() {
		@@ -10670,11 +6934,8 @@
10670	6934
10671	6935	/**
10672	6936	* AJAX handler to get system information for testing panel
10673	6937	*/
10674		-/**
10675		- * AJAX handler to get system information for testing panel
10676		- */
10677	6938	public function mxchat_get_system_info() {
10678	6939	// Verify nonce for security
10679	6940	if (!wp_verify_nonce($_POST['nonce'], 'mxchat_test_nonce')) {
10680	6941	wp_send_json_error(['message' => 'Invalid nonce']);
		@@ -10691,25 +6952,11 @@
10691	6952	$system_prompt = isset($this->options['system_prompt_instructions'])
10692	6953	? $this->options['system_prompt_instructions']
10693	6954	: 'No system prompt configured';
10694	6955
10695		- // Get selected model
10696		- $selected_model = isset($this->options['model']) ? $this->options['model'] : 'gpt-5.1-chat-latest';
	6956	+ // Get selected model - FIXED: Use $this->options instead of $current_options
	6957	+ $selected_model = isset($this->options['model']) ? $this->options['model'] : 'gpt-4o';
10697	6958
10698		- // Check if OpenRouter is being used
10699		- $is_openrouter = ($selected_model === 'openrouter');
10700		- $openrouter_model = '';
10701		-
10702		- if ($is_openrouter) {
10703		- // Get the actual OpenRouter model that's selected
10704		- $openrouter_model = isset($this->options['openrouter_selected_model'])
10705		- ? $this->options['openrouter_selected_model']
10706		- : 'No OpenRouter model selected';
10707		-
10708		- // Update selected_model display to show both
10709		- $selected_model = 'OpenRouter: ' . $openrouter_model;
10710		- }
10711		-
10712	6959	// Get API key status (just check if they exist, don't expose the keys)
10713	6960	$api_status = [];
10714	6961	$api_status['openai'] = !empty($this->options['api_key']);
10715	6962	$api_status['claude'] = !empty($this->options['claude_api_key']);
		@@ -10715,15 +6962,12 @@
10715	6962	$api_status['claude'] = !empty($this->options['claude_api_key']);
10716	6963	$api_status['gemini'] = !empty($this->options['gemini_api_key']);
10717	6964	$api_status['xai'] = !empty($this->options['xai_api_key']);
10718	6965	$api_status['deepseek'] = !empty($this->options['deepseek_api_key']);
10719		- $api_status['openrouter'] = !empty($this->options['openrouter_api_key']);
10720	6966
10721	6967	wp_send_json_success([
10722	6968	'system_prompt' => $system_prompt,
10723	6969	'selected_model' => $selected_model,
10724		- 'is_openrouter' => $is_openrouter,
10725		- 'openrouter_model' => $openrouter_model,
10726	6970	'api_status' => $api_status
10727	6971	]);
10728	6972	}
10729	6973
		@@ -10762,42 +7006,24 @@
10762	7006	if (!wp_verify_nonce($_POST['nonce'], 'mxchat_test_nonce')) {
10763	7007	wp_send_json_error(['message' => 'Invalid nonce']);
10764	7008	return;
10765	7009	}
10766		-
	7010	+
10767	7011	// Only allow admin users
10768	7012	if (!current_user_can('administrator')) {
10769	7013	wp_send_json_error(['message' => 'Unauthorized']);
10770	7014	return;
10771	7015	}
10772		-
10773		- // Check OpenAI Vector Store first (takes priority)
10774		- $vectorstore_options = get_option('mxchat_openai_vectorstore_options', array());
10775		- $use_vectorstore = (isset($vectorstore_options['mxchat_use_openai_vectorstore']) && $vectorstore_options['mxchat_use_openai_vectorstore'] === '1');
10776		-
10777		- if ($use_vectorstore) {
10778		- $vectorstore_ids = $vectorstore_options['mxchat_openai_vectorstore_ids'] ?? '';
10779		- $id_count = !empty($vectorstore_ids) ? count(array_filter(array_map('trim', explode(',', $vectorstore_ids)))) : 0;
10780		-
10781		- $kb_info = [
10782		- 'type' => 'OpenAI Vector Store',
10783		- 'status' => 'Active',
10784		- 'documents' => $id_count > 0 ? $id_count . ' vector store' . ($id_count > 1 ? 's' : '') . ' configured' : 'No vector stores configured'
10785		- ];
10786		-
10787		- wp_send_json_success($kb_info);
10788		- return;
10789		- }
10790		-
	7016	+
10791	7017	// Check Pinecone vs WordPress
10792	7018	$addon_options = get_option('mxchat_pinecone_addon_options', array());
10793	7019	$use_pinecone = (isset($addon_options['mxchat_use_pinecone']) && $addon_options['mxchat_use_pinecone'] === '1');
10794		-
	7020	+
10795	7021	$kb_info = [
10796	7022	'type' => $use_pinecone ? 'Pinecone' : 'WordPress Database',
10797	7023	'status' => 'Active'
10798	7024	];
10799		-
	7025	+
10800	7026	// Get document count
10801	7027	if ($use_pinecone) {
10802	7028	$kb_info['documents'] = 'Connected to Pinecone';
10803	7029	$kb_info['api_configured'] = !empty($addon_options['mxchat_pinecone_api_key']);
		@@ -10807,9 +7033,9 @@
10807	7033	$table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
10808	7034	$count = $wpdb->get_var("SELECT COUNT(*) FROM {$table_name}");
10809	7035	$kb_info['documents'] = $count ? $count . ' documents' : 'No documents';
10810	7036	}
10811		-
	7037	+
10812	7038	wp_send_json_success($kb_info);
10813	7039	}
10814	7040
10815	7041	/**
		@@ -10891,13 +7117,9 @@
10891	7117	// Clear any other session-specific transients
10892	7118	delete_transient("mxchat_waiting_for_pdf_url_{$session_id}");
10893	7119	delete_transient("mxchat_include_pdf_in_context_{$session_id}");
10894	7120	delete_transient("mxchat_include_word_in_context_{$session_id}");
10895		-
10896		- // Clear form addon state (pending forms and submitted forms)
10897		- delete_option("mxchat_pending_form_{$session_id}");
10898		- delete_option("mxchat_submitted_forms_{$session_id}");
10899		-
	7121	+
10900	7122	//error_log("MxChat: Cleared all data for session: {$session_id}");
10901	7123	}
10902	7124
10903	7125	/**
		@@ -11072,169 +7294,8 @@
11072	7294	wp_send_json_success(['message' => 'Originating page tracked']);
11073	7295	wp_die();
11074	7296	}
11075	7297
11076		-/**
11077		- * Validate and clean URLs from AI response
11078		- * Removes any URLs that aren't in the knowledge base
11079		- *
11080		- * @param string $response_text The AI-generated response
11081		- * @param array $valid_urls Array of URLs from the knowledge base
11082		- * @return string Cleaned response with invalid URLs removed/flagged
11083		- */
11084		-private function validate_and_clean_urls($response_text, $valid_urls) {
11085		- // DEBUG: Log what we're working with
11086		- //error_log("=== MxChat URL Validation Debug ===");
11087		- //error_log("Valid URLs count: " . count($valid_urls));
11088		- //error_log("Valid URLs: " . print_r($valid_urls, true));
11089		- //error_log("Response text length: " . strlen($response_text));
11090		- //error_log("Response text preview: " . substr($response_text, 0, 500));
11091		-
11092		- // If no valid URLs provided or empty response, return as-is
11093		- if (empty($valid_urls) || empty($response_text)) {
11094		- //error_log("Validation skipped - empty valid_urls or response");
11095		- return $response_text;
11096		- }
11097		-
11098		- // Extract all URLs from the AI response
11099		- // This regex matches http:// and https:// URLs
11100		- preg_match_all(
11101		- '#\bhttps?://[^\s<>"\')\]]+#i',
11102		- $response_text,
11103		- $matches
11104		- );
11105		-
11106		- // If no URLs found in response, return as-is
11107		- if (empty($matches[0])) {
11108		- //error_log("No URLs found in response");
11109		- return $response_text;
11110		- }
11111		-
11112		- $found_urls = $matches[0];
11113		- $cleaned_response = $response_text;
11114		- $removed_count = 0;
11115		-
11116		- // Normalize valid URLs for comparison (remove trailing slashes, fragments, etc.)
11117		- $normalized_valid_urls = array_map(function($url) {
11118		- // Remove trailing slash
11119		- $url = rtrim($url, '/');
11120		- // Remove URL fragments (#section)
11121		- $url = preg_replace('/#.*$/', '', $url);
11122		- // Remove trailing punctuation that might have been captured
11123		- $url = rtrim($url, '.,;:!?');
11124		- return $url;
11125		- }, $valid_urls);
11126		-
11127		- //error_log("Normalized valid URLs: " . print_r($normalized_valid_urls, true));
11128		-
11129		- foreach ($found_urls as $found_url) {
11130		- // Clean up the found URL (remove trailing punctuation that might have been captured)
11131		- $clean_found_url = rtrim($found_url, '.,;:!?)');
11132		-
11133		- // DEBUG: Log each URL being checked
11134		- //error_log("Checking found URL: " . $found_url);
11135		-
11136		- // Normalize for comparison
11137		- $normalized_found = rtrim($clean_found_url, '/');
11138		- $normalized_found = preg_replace('/#.*$/', '', $normalized_found);
11139		-
11140		- //error_log("Normalized found URL: " . $normalized_found);
11141		-
11142		- // Check if this URL exists in our valid URLs list
11143		- $is_valid = false;
11144		-
11145		- //error_log("Starting validation checks for: " . $normalized_found);
11146		-
11147		- // First, try exact match
11148		- if (in_array($normalized_found, $normalized_valid_urls)) {
11149		- $is_valid = true;
11150		- //error_log("EXACT MATCH FOUND");
11151		- } else {
11152		- //error_log("No exact match, checking variations...");
11153		- // If no exact match, check if it's a variation (with query params, etc.)
11154		- foreach ($normalized_valid_urls as $valid_url) {
11155		- //error_log(" Comparing against valid URL: " . $valid_url);
11156		-
11157		- // Check if the found URL starts with a valid URL (handles query params)
11158		- if (strpos($normalized_found, $valid_url) === 0) {
11159		- // Check what comes after the valid URL
11160		- $remainder = substr($normalized_found, strlen($valid_url));
11161		-
11162		- // Only valid if:
11163		- // 1. Exact match (remainder is empty)
11164		- // 2. Query params (starts with ?)
11165		- // 3. Fragment (starts with #)
11166		- if (empty($remainder) || $remainder[0] === '?' || $remainder[0] === '#') {
11167		- $is_valid = true;
11168		- //error_log(" MATCH: Found URL is valid variation of base URL");
11169		- break;
11170		- } else {
11171		- //error_log(" NOT A MATCH: Found URL extends path beyond valid URL (remainder: " . $remainder . ")");
11172		- }
11173		- }
11174		- // Also check the reverse (in case valid URL has query params)
11175		- if (strpos($valid_url, $normalized_found) === 0) {
11176		- $is_valid = true;
11177		- //error_log(" MATCH: Valid URL starts with found URL");
11178		- break;
11179		- }
11180		- }
11181		-
11182		- if (!$is_valid) {
11183		- //error_log("NO MATCH FOUND - URL should be removed");
11184		- }
11185		- }
11186		-
11187		- // If URL is not valid, remove it from the response
11188		- if (!$is_valid) {
11189		- // Log the removal for debugging
11190		- //error_log("MxChat: Removed hallucinated URL: " . $found_url);
11191		- //error_log("MxChat: Valid URLs were: " . implode(', ', array_slice($normalized_valid_urls, 0, 5)));
11192		-
11193		- $removed_count++;
11194		-
11195		- // Check if URL is part of a markdown link: [text](url)
11196		- $markdown_pattern = '/\[([^\]]+)\]\(' . preg_quote($found_url, '/') . '\)/';
11197		- if (preg_match($markdown_pattern, $cleaned_response)) {
11198		- //error_log("Found markdown link, removing but keeping text");
11199		- // Remove the markdown link but keep the text
11200		- $cleaned_response = preg_replace($markdown_pattern, '$1', $cleaned_response);
11201		- }
11202		- // Check if URL is part of an HTML link: <a href="url">text</a>
11203		- else if (preg_match('/<a[^>]*href=["\']' . preg_quote($found_url, '/') . '["\'][^>]*>(.*?)<\/a>/i', $cleaned_response, $link_match)) {
11204		- //error_log("Found HTML link, removing but keeping text");
11205		- // Remove the HTML link but keep the text
11206		- $link_text = $link_match[1];
11207		- $cleaned_response = preg_replace(
11208		- '/<a[^>]*href=["\']' . preg_quote($found_url, '/') . '["\'][^>]*>.*?<\/a>/i',
11209		- $link_text,
11210		- $cleaned_response
11211		- );
11212		- }
11213		- // Otherwise just remove the bare URL
11214		- else {
11215		- //error_log("Removing bare URL");
11216		- $cleaned_response = str_replace($found_url, '', $cleaned_response);
11217		- }
11218		- }
11219		- }
11220		-
11221		- // Log summary if any URLs were removed
11222		- if ($removed_count > 0) {
11223		- //error_log("MxChat: URL Validation Summary - Removed {$removed_count} hallucinated URL(s)");
11224		- } else {
11225		- //error_log("MxChat: URL Validation Summary - No URLs removed, all were valid");
11226		- }
11227		-
11228		- // Clean up any double spaces or awkward punctuation left behind
11229		- // IMPORTANT: Only collapse horizontal whitespace (spaces/tabs), preserve newlines for markdown formatting
11230		- $cleaned_response = preg_replace('/[^\S\n]+/', ' ', $cleaned_response); // Collapse spaces/tabs but NOT newlines
11231		- $cleaned_response = preg_replace('/[^\S\n]+([.,;:!?])/', '$1', $cleaned_response); // Same for punctuation cleanup
11232		-
11233		- //error_log("Final cleaned response: " . $cleaned_response);
11234		-
11235		- return trim($cleaned_response);
11236		-}
11237	7298
11238	7299	/**
11239	7300	* AJAX handler to get current chat mode for a session
11240	7301	*/