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MxChat – AI Chatbot & Content Generation for WordPress / 2.6.3
MxChat – AI Chatbot & Content Generation for WordPress v2.6.3
3.2.21 3.2.20 3.2.19 3.2.18 3.2.17 3.2.16 3.2.15 3.2.14 3.2.12 3.2.13 3.2.11 3.2.10 3.2.9 3.2.8 3.2.7 3.2.6 3.2.5 3.2.4 3.2.3 3.2.2 3.2.1 2.0.3 2.0.4 2.0.5 2.0.6 All 152 releases
← All changes | mxchat-basic.php +28 -711 3.2.7 → 2.6.3 View file →
@@ -2,9 +2,9 @@
2 2 /**
3 3 * Plugin Name: MxChat
4 4 * Plugin URI: https://mxchat.ai/
5 5 * Description: AI chatbot for WordPress with OpenAI, Claude, xAI, DeepSeek, live agent, PDF uploads, WooCommerce, and training on website data.
6 - * Version: 3.2.7
6 + * Version: 2.6.3
7 7 * Author: MxChat
8 8 * Author URI: https://mxchat.ai
9 9 * License: GPLv2 or later
10 10 * License URI: https://www.gnu.org/licenses/gpl-2.0.html
@@ -15,20 +15,13 @@
15 15 if (!defined('ABSPATH')) {
16 16 exit; // Exit if accessed directly.
17 17 }
18 18
19 -
20 -if (!defined('MXCHAT_DEV_MODE')) {
21 - define('MXCHAT_DEV_MODE', false);
22 -}
23 -
19 +// Define plugin version constant for asset versioning
20 +// Reads version from plugin header automatically
24 21 if (!defined('MXCHAT_VERSION')) {
25 22 $plugin_data = get_file_data(__FILE__, array('Version' => 'Version'), 'plugin');
26 - $version = $plugin_data['Version'];
27 - if (MXCHAT_DEV_MODE) {
28 - $version .= '.' . time();
29 - }
30 - define('MXCHAT_VERSION', $version);
23 + define('MXCHAT_VERSION', $plugin_data['Version']);
31 24 }
32 25
33 26 function mxchat_load_textdomain() {
34 27 $domain = 'mxchat';
@@ -45,309 +38,8 @@
45 38 load_plugin_textdomain($domain, false, dirname(plugin_basename(__FILE__)) . '/languages');
46 39 }
47 40 add_action('init', 'mxchat_load_textdomain');
48 41
49 -/**
50 - * One-time migration: gemini-3-pro-preview was shut down by Google on March 9, 2026.
51 - * Existing installs with the dead ID get auto-remapped to gemini-3.1-pro-preview
52 - * (Google's official migration target) the first time admin_init fires after update.
53 - */
54 -add_action('admin_init', function () {
55 - if (get_option('mxchat_gemini_3_remap_done')) {
56 - return;
57 - }
58 - $opts = get_option('mxchat_options');
59 - if (is_array($opts) && isset($opts['model']) && $opts['model'] === 'gemini-3-pro-preview') {
60 - $opts['model'] = 'gemini-3.1-pro-preview';
61 - update_option('mxchat_options', $opts);
62 - }
63 - if (is_array($opts) && isset($opts['content_model']) && $opts['content_model'] === 'gemini-3-pro-preview') {
64 - $opts['content_model'] = 'gemini-3.1-pro-preview';
65 - update_option('mxchat_options', $opts);
66 - }
67 - update_option('mxchat_gemini_3_remap_done', 1);
68 -});
69 -
70 -/**
71 - * One-time migration: the Grok 2 family was retired by xAI (grok-2, grok-2-1212,
72 - * grok-2-latest, grok-2-vision-1212 all return 400 "Model not found"). Existing
73 - * installs with the dead ID get auto-remapped to grok-4-1-fast-non-reasoning
74 - * (modern, fast, broadly available) the first time admin_init fires after update.
75 - */
76 -add_action('admin_init', function () {
77 - if (get_option('mxchat_grok_2_remap_done')) {
78 - return;
79 - }
80 - $opts = get_option('mxchat_options');
81 - if (is_array($opts) && isset($opts['model']) && $opts['model'] === 'grok-2') {
82 - $opts['model'] = 'grok-4-1-fast-non-reasoning';
83 - update_option('mxchat_options', $opts);
84 - }
85 - if (is_array($opts) && isset($opts['content_model']) && $opts['content_model'] === 'grok-2') {
86 - $opts['content_model'] = 'grok-4-1-fast-non-reasoning';
87 - update_option('mxchat_options', $opts);
88 - }
89 - update_option('mxchat_grok_2_remap_done', 1);
90 -});
91 -
92 -/**
93 - * Exclude MxChat assets from caching plugin optimizations
94 - *
95 - * This prevents issues with WP Rocket, LiteSpeed Cache, Autoptimize, WP Super Cache,
96 - * W3 Total Cache, SG Optimizer, and similar plugins that may break the chatbot by
97 - * removing "unused" CSS, minifying/combining JS, or deferring/delaying jQuery.
98 - *
99 - * Both chat-script.js and floating-script.js depend on jQuery, so jQuery must also
100 - * be excluded from any optimization that changes load order or timing.
101 - */
102 -
103 -// ── WP Rocket ────────────────────────────────────────────────────────────────
104 -
105 -// Exclude from Remove Unused CSS (RUCSS)
106 -add_filter('rocket_rucss_inline_atts_exclusions', function($exclusions) {
107 - if (!is_array($exclusions)) $exclusions = array();
108 - $exclusions[] = 'mxchat';
109 - return $exclusions;
110 -});
111 -
112 -// Exclude CSS from minification/combination
113 -add_filter('rocket_exclude_css', function($excluded) {
114 - if (!is_array($excluded)) $excluded = array();
115 - $excluded[] = '/plugins/mxchat-basic/css/chat-style.css';
116 - return $excluded;
117 -});
118 -
119 -// Exclude JS from minification/combination
120 -add_filter('rocket_exclude_js', function($excluded) {
121 - if (!is_array($excluded)) $excluded = array();
122 - $excluded[] = '/plugins/mxchat-basic/js/chat-script.js';
123 - $excluded[] = '/plugins/mxchat-basic/js/floating-script.js';
124 - $excluded[] = '/jquery-core';
125 - $excluded[] = '/jquery.min.js';
126 - $excluded[] = '/jquery.js';
127 - $excluded[] = '/jquery-migrate';
128 - return $excluded;
129 -});
130 -
131 -// Exclude JS from defer
132 -add_filter('rocket_exclude_defer_js', function($excluded) {
133 - if (!is_array($excluded)) $excluded = array();
134 - $excluded[] = '/plugins/mxchat-basic/js/chat-script.js';
135 - $excluded[] = '/plugins/mxchat-basic/js/floating-script.js';
136 - $excluded[] = '/jquery-core';
137 - $excluded[] = '/jquery.min.js';
138 - $excluded[] = '/jquery.js';
139 - $excluded[] = '/jquery-migrate';
140 - return $excluded;
141 -});
142 -
143 -// Exclude from delay JS execution
144 -add_filter('rocket_delay_js_exclusions', function($excluded) {
145 - if (!is_array($excluded)) $excluded = array();
146 - $excluded[] = 'mxchat';
147 - $excluded[] = 'chat-script';
148 - $excluded[] = 'floating-script';
149 - $excluded[] = '/jquery-core';
150 - $excluded[] = '/jquery.min.js';
151 - $excluded[] = '/jquery.js';
152 - $excluded[] = '/jquery-migrate';
153 - return $excluded;
154 -});
155 -
156 -// ── LiteSpeed Cache ──────────────────────────────────────────────────────────
157 -
158 -// Exclude CSS from optimization
159 -add_filter('litespeed_optimize_css_excludes', function($excluded) {
160 - if (!is_array($excluded)) $excluded = array();
161 - $excluded[] = 'chat-style.css';
162 - $excluded[] = 'mxchat';
163 - return $excluded;
164 -});
165 -
166 -// Exclude from UCSS (Unique CSS) - prevents LiteSpeed from stripping "unused" MxChat CSS
167 -add_filter('litespeed_ucss_whitelist', function($whitelist) {
168 - if (!is_array($whitelist)) $whitelist = array();
169 - $whitelist[] = '.mxchat-chatbot-wrapper';
170 - $whitelist[] = '.floating-chatbot';
171 - $whitelist[] = '.floating-chatbot-button';
172 - $whitelist[] = '.chatbot-top-bar';
173 - $whitelist[] = '.mxchat-chatbot';
174 - $whitelist[] = '.chat-container';
175 - $whitelist[] = '.chat-box';
176 - $whitelist[] = '.bot-message';
177 - $whitelist[] = '.input-container';
178 - $whitelist[] = '.chat-input';
179 - $whitelist[] = '.send-button';
180 - $whitelist[] = '.pre-chat-message';
181 - $whitelist[] = '.mxchat-popular-questions';
182 - $whitelist[] = '.chat-toolbar';
183 - $whitelist[] = '.exit-chat';
184 - $whitelist[] = '.email-blocker';
185 - return $whitelist;
186 -});
187 -
188 -// Exclude CSS from CCSS (Critical CSS) generation
189 -add_filter('litespeed_optm_ccss_exc', function($excluded) {
190 - if (!is_array($excluded)) $excluded = array();
191 - $excluded[] = 'chat-style.css';
192 - $excluded[] = 'mxchat';
193 - return $excluded;
194 -});
195 -
196 -// Exclude JS from defer
197 -add_filter('litespeed_optm_js_defer_exc', function($excluded) {
198 - if (!is_array($excluded)) $excluded = array();
199 - $excluded[] = 'chat-script.js';
200 - $excluded[] = 'floating-script.js';
201 - $excluded[] = 'mxchat';
202 - $excluded[] = 'jquery.min.js';
203 - $excluded[] = 'jquery.js';
204 - return $excluded;
205 -});
206 -
207 -// Exclude JS from combining
208 -add_filter('litespeed_optm_js_exc', function($excluded) {
209 - if (!is_array($excluded)) $excluded = array();
210 - $excluded[] = 'chat-script.js';
211 - $excluded[] = 'floating-script.js';
212 - $excluded[] = 'mxchat';
213 - $excluded[] = 'jquery.min.js';
214 - $excluded[] = 'jquery.js';
215 - return $excluded;
216 -});
217 -
218 -// Exclude JS from delayed execution
219 -add_filter('litespeed_optm_js_delay_exc', function($excluded) {
220 - if (!is_array($excluded)) $excluded = array();
221 - $excluded[] = 'chat-script.js';
222 - $excluded[] = 'floating-script.js';
223 - $excluded[] = 'mxchat';
224 - return $excluded;
225 -});
226 -
227 -// Exclude from Guest Mode optimization
228 -add_filter('litespeed_guest_optm_exc', function($excluded) {
229 - if (!is_array($excluded)) $excluded = array();
230 - $excluded[] = 'mxchat';
231 - $excluded[] = 'chat-style';
232 - $excluded[] = 'chat-script';
233 - $excluded[] = 'floating-script';
234 - return $excluded;
235 -});
236 -
237 -// ── Autoptimize ──────────────────────────────────────────────────────────────
238 -
239 -// Exclude CSS from optimization (comma-separated strings)
240 -add_filter('autoptimize_filter_css_exclude', function($excluded) {
241 - if (!is_string($excluded)) $excluded = '';
242 - return $excluded . ', mxchat, chat-style.css';
243 -});
244 -
245 -// Exclude JS from optimization (comma-separated strings)
246 -add_filter('autoptimize_filter_js_exclude', function($excluded) {
247 - if (!is_string($excluded)) $excluded = '';
248 - return $excluded . ', mxchat, chat-script.js, floating-script.js, jquery.min.js, jquery.js';
249 -});
250 -
251 -// ── SG Optimizer (SiteGround) ────────────────────────────────────────────────
252 -
253 -add_filter('sgo_js_minify_exclude', function($excluded) {
254 - if (!is_array($excluded)) $excluded = array();
255 - $excluded[] = 'chat-script.js';
256 - $excluded[] = 'floating-script.js';
257 - $excluded[] = 'jquery.min.js';
258 - return $excluded;
259 -});
260 -
261 -add_filter('sgo_javascript_combine_exclude', function($excluded) {
262 - if (!is_array($excluded)) $excluded = array();
263 - $excluded[] = 'chat-script.js';
264 - $excluded[] = 'floating-script.js';
265 - $excluded[] = 'jquery.min.js';
266 - return $excluded;
267 -});
268 -
269 -add_filter('sgo_js_async_exclude', function($excluded) {
270 - if (!is_array($excluded)) $excluded = array();
271 - $excluded[] = 'chat-script.js';
272 - $excluded[] = 'floating-script.js';
273 - $excluded[] = 'jquery.min.js';
274 - return $excluded;
275 -});
276 -
277 -// ── W3 Total Cache ───────────────────────────────────────────────────────────
278 -
279 -add_filter('w3tc_minify_js_do_tag_minification', function($do_minify, $script_tag, $file) {
280 - if (strpos($file, 'chat-script.js') !== false ||
281 - strpos($file, 'floating-script.js') !== false ||
282 - strpos($file, 'jquery.min.js') !== false ||
283 - strpos($file, 'jquery.js') !== false) {
284 - return false;
285 - }
286 - return $do_minify;
287 -}, 10, 3);
288 -
289 -// ── WP Super Cache ──────────────────────────────────────────────────────────
290 -
291 -add_filter('wpsc_rejected_uri', function($rejected) {
292 - if (!is_array($rejected)) $rejected = array();
293 - $rejected[] = 'wp-admin/admin-ajax.php';
294 - return $rejected;
295 -});
296 -
297 -// ── Page-cache bypass for chat AJAX (companion to the 3.2.6 nonce-race hotfix)
298 -// Each cache plugin gets its own filter export so that visitors hitting an
299 -// edge-cached page never receive cached chat-AJAX responses. The chat send /
300 -// stream send / file upload all POST to /wp-admin/admin-ajax.php with
301 -// `action=mxchat_*`. Without these exports, a cache plugin can stale a response
302 -// and break the per-session nonce flow on the first message.
303 -
304 -// WP Rocket — `rocket_cache_reject_uri` takes a flat array of regex strings.
305 -add_filter('rocket_cache_reject_uri', function($uris) {
306 - if (!is_array($uris)) $uris = array();
307 - $uris[] = '/wp-admin/admin-ajax\.php\?action=mxchat_.*';
308 - return $uris;
309 -});
310 -
311 -// LiteSpeed Cache — `litespeed_cache_no_cache_for_request` short-circuits
312 -// caching when the request matches our chat-AJAX pattern.
313 -add_filter('litespeed_cache_no_cache_for_request', function($no_cache) {
314 - if ($no_cache) return $no_cache;
315 - if (!empty($_SERVER['REQUEST_URI']) &&
316 - strpos($_SERVER['REQUEST_URI'], '/wp-admin/admin-ajax.php') !== false &&
317 - !empty($_REQUEST['action']) &&
318 - strpos((string) $_REQUEST['action'], 'mxchat_') === 0) {
319 - return true;
320 - }
321 - return $no_cache;
322 -});
323 -
324 -// W3 Total Cache — `w3tc_pgcache_request_skip_uri` flips page-cache off when
325 -// the URI matches.
326 -add_filter('w3tc_pgcache_request_skip_uri', function($skip) {
327 - if ($skip) return $skip;
328 - if (!empty($_SERVER['REQUEST_URI']) &&
329 - strpos($_SERVER['REQUEST_URI'], '/wp-admin/admin-ajax.php') !== false &&
330 - !empty($_REQUEST['action']) &&
331 - strpos((string) $_REQUEST['action'], 'mxchat_') === 0) {
332 - return true;
333 - }
334 - return $skip;
335 -});
336 -
337 -// FlyingPress — `flying_press_cacheable` takes a boolean and is run per
338 -// request. Same pattern as LiteSpeed / W3TC.
339 -add_filter('flying_press_cacheable', function($cacheable) {
340 - if (!$cacheable) return $cacheable;
341 - if (!empty($_SERVER['REQUEST_URI']) &&
342 - strpos($_SERVER['REQUEST_URI'], '/wp-admin/admin-ajax.php') !== false &&
343 - !empty($_REQUEST['action']) &&
344 - strpos((string) $_REQUEST['action'], 'mxchat_') === 0) {
345 - return false;
346 - }
347 - return $cacheable;
348 -});
349 -
350 42 // Include classes with error handling
351 43 function mxchat_include_classes() {
352 44 $class_files = array(
353 45 'includes/class-mxchat-integrator.php',
@@ -356,11 +48,10 @@
356 48 'includes/class-mxchat-utils.php',
357 49 'includes/class-mxchat-user.php',
358 50 'includes/class-mxchat-meta-box.php',
359 51 'includes/class-mxchat-chunker.php',
52 + 'includes/pdf-parser/alt_autoload.php',
360 53 'includes/class-mxchat-word-handler.php',
361 - 'includes/class-mxchat-content-generator.php',
362 - 'includes/class-rest-api.php',
363 54 'admin/class-ajax-handler.php',
364 55 'admin/class-pinecone-manager.php',
365 56 'admin/class-knowledge-manager.php'
366 57 );
@@ -372,45 +63,11 @@
372 63 } else {
373 64 //error_log('MxChat: Missing class file - ' . $file);
374 65 }
375 66 }
376 -
377 - // Admin pages that aren't classes (procedural include).
378 - if (is_admin()) {
379 - $admin_api_page = plugin_dir_path(__FILE__) . 'includes/admin-api-page.php';
380 - if (file_exists($admin_api_page)) {
381 - require_once $admin_api_page;
382 - }
383 - // f7c7d4 renamed this file admin-dashboard-page.php → admin-onboarding-page.php.
384 - // The require MUST live here (admin bootstrap) and not just inside
385 - // mxchat_add_plugin_page() on the admin_menu hook — admin_menu does NOT
386 - // fire on admin-ajax.php requests, so the wizard's AJAX handlers
387 - // (plan-905439: mxchat_onboarding_kb_status / save_step / mark_step /
388 - // auto_graduate + the f7c7d4 dismiss handler) would never register.
389 - $admin_onboarding_page = plugin_dir_path(__FILE__) . 'includes/admin-onboarding-page.php';
390 - if (file_exists($admin_onboarding_page)) {
391 - require_once $admin_onboarding_page;
392 - }
393 - }
394 67 }
395 68
396 69 /**
397 - * Lazy-load the PDF parser library only when needed.
398 - * Avoids loading 44 files on every page request.
399 - */
400 -function mxchat_load_pdf_parser() {
401 - if (class_exists('\Smalot\PdfParser\Parser')) {
402 - return true;
403 - }
404 - $autoload_path = plugin_dir_path(__FILE__) . 'includes/pdf-parser/alt_autoload.php';
405 - if (file_exists($autoload_path)) {
406 - require_once $autoload_path;
407 - return true;
408 - }
409 - return false;
410 -}
411 -
412 -/**
413 70 * Create URL click tracking table
414 71 */
415 72 function mxchat_create_url_clicks_table() {
416 73 global $wpdb;
@@ -678,9 +335,9 @@
678 335
679 336 // Add index for bot_id
680 337 $wpdb->query("ALTER TABLE {$table_name} ADD KEY bot_id (bot_id)");
681 338
682 - //error_log('MxChat: Successfully added bot_id column to mxchat_pinecone_roles table');
339 + error_log('MxChat: Successfully added bot_id column to mxchat_pinecone_roles table');
683 340 }
684 341
685 342 // Mark migration as complete
686 343 update_option('mxchat_pinecone_roles_migration_version', '2.5.2');
@@ -715,9 +372,9 @@
715 372
716 373 // Add index for better query performance
717 374 $wpdb->query("ALTER TABLE {$table_name} ADD KEY content_type (content_type)");
718 375
719 - //error_log('MxChat: Successfully added content_type column to mxchat_system_prompt_content table');
376 + error_log('MxChat: Successfully added content_type column to mxchat_system_prompt_content table');
720 377 }
721 378
722 379 // Mark migration as complete
723 380 update_option('mxchat_content_type_migration_version', '2.5.6');
@@ -723,33 +380,8 @@
723 380 update_option('mxchat_content_type_migration_version', '2.5.6');
724 381 }
725 382
726 383 /**
727 - * 3.2.4: Backfill the active embedding model option for installs that already
728 - * have KB content but no stamped model. The mismatch warning compares this
729 - * against the user's currently selected model — no per-row column needed.
730 - */
731 -function mxchat_backfill_active_embedding_model() {
732 - global $wpdb;
733 -
734 - if (get_option('mxchat_active_embedding_model', '') !== '') {
735 - return;
736 - }
737 -
738 - $kb_table = $wpdb->prefix . 'mxchat_system_prompt_content';
739 - if ($wpdb->get_var("SHOW TABLES LIKE '{$kb_table}'") !== $kb_table) {
740 - return;
741 - }
742 -
743 - $kb_count = (int) $wpdb->get_var("SELECT COUNT(*) FROM {$kb_table}");
744 - if ($kb_count > 0) {
745 - $options = get_option('mxchat_options', array());
746 - $current_model = $options['embedding_model'] ?? 'text-embedding-ada-002';
747 - update_option('mxchat_active_embedding_model', $current_model, false);
748 - }
749 -}
750 -
751 -/**
752 384 * 2.5.2: Create queue processing tables for reliable background processing
753 385 */
754 386 function mxchat_create_queue_tables() {
755 387 global $wpdb;
@@ -797,58 +429,8 @@
797 429 //error_log("MxChat: Queue tables created/updated successfully");
798 430 }
799 431
800 432 /**
801 - * Create transcript translations table for persisting translations
802 - */
803 -function mxchat_create_translations_table() {
804 - global $wpdb;
805 - $charset_collate = $wpdb->get_charset_collate();
806 -
807 - $table_name = $wpdb->prefix . 'mxchat_transcript_translations';
808 - $sql = "CREATE TABLE $table_name (
809 - id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
810 - session_id varchar(255) NOT NULL,
811 - language_code varchar(10) NOT NULL,
812 - translations longtext NOT NULL,
813 - created_at datetime NOT NULL,
814 - updated_at datetime NOT NULL,
815 - PRIMARY KEY (id),
816 - UNIQUE KEY session_lang (session_id, language_code),
817 - KEY session_id (session_id)
818 - ) $charset_collate;";
819 -
820 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
821 - dbDelta($sql);
822 -}
823 -
824 -/**
825 - * Create per-session satisfaction ratings table (v3.2.6)
826 - * Stores one 👍/👎 rating + optional feedback per chat session.
827 - */
828 -function mxchat_create_session_ratings_table() {
829 - global $wpdb;
830 - $charset_collate = $wpdb->get_charset_collate();
831 -
832 - $table_name = $wpdb->prefix . 'mxchat_session_ratings';
833 - $sql = "CREATE TABLE $table_name (
834 - id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
835 - session_id varchar(255) NOT NULL,
836 - bot_id varchar(50) NOT NULL DEFAULT 'default',
837 - rating_value tinyint(1) NOT NULL,
838 - rating_feedback text DEFAULT NULL,
839 - created_at datetime NOT NULL,
840 - PRIMARY KEY (id),
841 - UNIQUE KEY session_id (session_id),
842 - KEY bot_id (bot_id),
843 - KEY created_at (created_at)
844 - ) $charset_collate;";
845 -
846 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
847 - dbDelta($sql);
848 -}
849 -
850 -/**
851 433 * 2.5.2: Fix URL column size to support long URLs (especially with UTF-8 encoding)
852 434 * This fixes "url, source_url. The supplied values may be too long" errors
853 435 */
854 436 function mxchat_fix_url_column_size() {
@@ -871,80 +453,22 @@
871 453
872 454 /**
873 455 * Migrate deprecated AI models to their replacements
874 456 * Version 2.5.1: Migrate Claude 3.5 Sonnet (deprecated) to Claude 3.7 Sonnet
875 - * Version 3.1.2: Convert chat transcripts table to utf8mb4 for emoji support
876 - * Without utf8mb4, any bot response containing emojis silently fails to insert.
877 457 */
878 -function mxchat_migrate_transcripts_charset() {
879 - global $wpdb;
880 - $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
881 - $wpdb->query("ALTER TABLE $table_name CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci");
882 -}
883 -
884 -/**
885 - * Version 3.0.55: Migrate GPT-4 series models (deprecated 2026-02-17) to GPT-5 series
886 - */
887 458 function mxchat_migrate_deprecated_models() {
888 459 $options = get_option('mxchat_options', array());
889 - $migrated = false;
890 - $migration_message = '';
891 -
892 - if (!isset($options['model'])) {
893 - return;
894 - }
895 -
896 - $current_model = $options['model'];
897 -
898 - // Migrate deprecated Claude models to Claude Opus 4.6 (recommended replacement per Anthropic)
899 - $deprecated_claude_models = array(
900 - 'claude-3-5-sonnet-20240620', // Retired Oct 28, 2025
901 - 'claude-3-5-sonnet-20241022', // Retired Oct 28, 2025
902 - 'claude-3-7-sonnet-20250219', // Retiring Feb 19, 2026
903 - 'claude-3-opus-20240229', // Retired Jan 5, 2026
904 - 'claude-3-sonnet-20240229', // Legacy
905 - 'claude-3-haiku-20240307', // Legacy
906 - );
907 - if (in_array($current_model, $deprecated_claude_models, true)) {
908 - $options['model'] = 'claude-opus-4-6';
909 - $migrated = true;
910 - $migration_message = sprintf(
911 - 'Your chatbot model has been automatically updated from %s to Claude Opus 4.6 due to Anthropic deprecating older Claude models.',
912 - $current_model
913 - );
914 - }
915 -
916 - // Migrate deprecated Claude Haiku 3.5 to Claude Haiku 4.5
917 - if ($current_model === 'claude-3-5-haiku-20241022') {
918 - $options['model'] = 'claude-haiku-4-5-20251001';
919 - $migrated = true;
920 - $migration_message = 'Your chatbot model has been automatically updated from Claude Haiku 3.5 to Claude Haiku 4.5 due to Anthropic deprecating the older model.';
921 - }
922 -
923 - // Migrate deprecated GPT-4 series and GPT-3.5 Turbo to GPT-5.1 Chat Latest
924 - if (in_array($current_model, array('gpt-4o', 'gpt-4.1-2025-04-14', 'gpt-4-turbo', 'gpt-4', 'gpt-3.5-turbo'), true)) {
925 - $options['model'] = 'gpt-5.1-chat-latest';
926 - $migrated = true;
927 - $migration_message = sprintf(
928 - 'Your chatbot model has been automatically updated from %s to GPT-5.1 Chat Latest due to OpenAI deprecating older models.',
929 - $current_model
930 - );
931 - }
932 -
933 - // Migrate deprecated GPT-4o Mini and GPT-4.1 Mini to GPT-5 Mini
934 - if (in_array($current_model, array('gpt-4o-mini', 'gpt-4.1-mini'), true)) {
935 - $options['model'] = 'gpt-5-mini';
936 - $migrated = true;
937 - $migration_message = sprintf(
938 - 'Your chatbot model has been automatically updated from %s to GPT-5 Mini due to OpenAI deprecating GPT-4 series models.',
939 - $current_model
940 - );
941 - }
942 -
943 - if ($migrated) {
460 +
461 + // Check if model is set and is the deprecated Claude 3.5 Sonnet
462 + if (isset($options['model']) && $options['model'] === 'claude-3-5-sonnet-20241022') {
463 + // Update to Claude 3.7 Sonnet (the replacement model)
464 + $options['model'] = 'claude-3-7-sonnet-20250219';
944 465 update_option('mxchat_options', $options);
466 +
467 + // Set a flag to show admin notice
945 468 update_option('mxchat_model_migrated_notice', true);
946 - update_option('mxchat_model_migration_message', $migration_message);
469 +
470 + //error_log('MxChat: Migrated deprecated Claude 3.5 Sonnet to Claude 3.7 Sonnet');
947 471 }
948 472 }
949 473
950 474 /**
@@ -951,19 +475,17 @@
951 475 * Show admin notice after model migration
952 476 */
953 477 function mxchat_show_migration_notice() {
954 478 if (get_option('mxchat_model_migrated_notice')) {
955 - $migration_message = get_option('mxchat_model_migration_message', __('Your chatbot model has been automatically updated due to a model deprecation.', 'mxchat'));
956 479 ?>
957 480 <div class="notice notice-info is-dismissible">
958 481 <p>
959 482 <strong><?php esc_html_e('MxChat Model Updated', 'mxchat'); ?></strong><br>
960 - <?php echo esc_html($migration_message); ?>
483 + <?php esc_html_e('Your chatbot model has been automatically updated from Claude 3.5 Sonnet to Claude 3.7 Sonnet due to the deprecation of the previous model by Anthropic. Claude 3.7 Sonnet offers improved performance and capabilities.', 'mxchat'); ?>
961 484 </p>
962 485 </div>
963 486 <?php
964 487 delete_option('mxchat_model_migrated_notice');
965 - delete_option('mxchat_model_migration_message');
966 488 }
967 489 }
968 490
969 491 function mxchat_activate() {
@@ -1003,26 +525,13 @@
1003 525 enabled_bots LONGTEXT DEFAULT NULL,
1004 526 PRIMARY KEY (id)
1005 527 ) $charset_collate;";
1006 528
1007 - // Individual Intent Phrases Table - each phrase gets its own embedding vector
1008 - $intent_phrases_table = $wpdb->prefix . 'mxchat_intent_phrases';
1009 - $sql_intent_phrases_table = "CREATE TABLE $intent_phrases_table (
1010 - id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
1011 - intent_id BIGINT(20) UNSIGNED NOT NULL,
1012 - phrase TEXT NOT NULL,
1013 - embedding_vector LONGTEXT NOT NULL,
1014 - created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
1015 - PRIMARY KEY (id),
1016 - KEY intent_id (intent_id)
1017 - ) $charset_collate;";
1018 -
1019 529 require_once ABSPATH . 'wp-admin/includes/upgrade.php';
1020 530
1021 531 // Create other tables
1022 532 dbDelta($sql_system_prompt);
1023 533 dbDelta($sql_intents_table);
1024 - dbDelta($sql_intent_phrases_table);
1025 534
1026 535 // Create URL click tracking table
1027 536 mxchat_create_url_clicks_table();
1028 537
@@ -1031,14 +540,8 @@
1031 540
1032 541 // NEW 2.5.2: Create queue processing tables
1033 542 mxchat_create_queue_tables();
1034 543
1035 - // Create transcript translations table
1036 - mxchat_create_translations_table();
1037 -
1038 - // Create per-session satisfaction ratings table (v3.2.6)
1039 - mxchat_create_session_ratings_table();
1040 -
1041 544 // Ensure additional columns in system prompt table
1042 545 $existing_system_columns = $wpdb->get_results("SHOW COLUMNS FROM $system_prompt_table");
1043 546 if (!empty($existing_system_columns)) {
1044 547 $existing_system_column_names = array_column($existing_system_columns, 'Field');
@@ -1081,11 +584,8 @@
1081 584
1082 585 // Run migration for existing installations
1083 586 mxchat_migrate_pinecone_roles_add_bot_id();
1084 587
1085 - // 3.2.4: Backfill active embedding model option (replaces 3.2.3 column-based tracking)
1086 - mxchat_backfill_active_embedding_model();
1087 -
1088 588 // Setup cron jobs
1089 589 mxchat_setup_cron_jobs();
1090 590
1091 591 // Update version
@@ -1120,14 +620,13 @@
1120 620 // Clear fallback flags if cron scheduling succeeded
1121 621 delete_option('mxchat_use_fallback_rate_limits');
1122 622 }
1123 623
1124 - // Schedule transcript cleanup if configured (bucket dropdown OR custom retention-days > 0)
624 + // Schedule transcript cleanup if configured
1125 625 $transcript_options = get_option('mxchat_transcripts_options', array());
1126 626 $cleanup_interval = isset($transcript_options['mxchat_auto_delete_transcripts']) ? $transcript_options['mxchat_auto_delete_transcripts'] : 'never';
1127 - $custom_retention = isset($transcript_options['mxchat_retention_days']) ? (int) $transcript_options['mxchat_retention_days'] : 0;
1128 -
1129 - if ($cleanup_interval !== 'never' || $custom_retention > 0) {
627 +
628 + if ($cleanup_interval !== 'never') {
1130 629 // Check if not already scheduled
1131 630 if (!wp_next_scheduled('mxchat_cleanup_old_transcripts')) {
1132 631 // Schedule to run daily at 3 AM
1133 632 $next_run = strtotime('tomorrow 3:00 AM');
@@ -1204,14 +703,11 @@
1204 703
1205 704 // Version-specific migrations
1206 705 if ($current_version !== $plugin_version) {
1207 706 //error_log("MxChat: Version change detected: $current_version -> $plugin_version");
1208 -
707 +
1209 708 // Run live agent update BEFORE updating the stored version
1210 709 mxchat_handle_live_agent_update();
1211 -
1212 - // Run theme migration notice for 3.0.1 (AI theme CSS structure changes)
1213 - mxchat_handle_theme_migration_notice();
1214 710
1215 711 // Run role restriction migration for 2.4.1
1216 712 if (version_compare($current_version, '2.4.1', '<')) {
1217 713 mxchat_add_role_restriction_column();
@@ -1240,35 +736,8 @@
1240 736 mxchat_ensure_all_columns($chat_table);
1241 737 //error_log("MxChat: rag_context column migration for 2.6.0");
1242 738 }
1243 739
1244 - // 3.0.5: Migrate deprecated Gemini embedding model
1245 - if (version_compare($current_version, '3.0.5', '<')) {
1246 - mxchat_migrate_gemini_embedding_model();
1247 - }
1248 -
1249 - // 3.0.6: Migrate deprecated OpenAI and Claude models
1250 - if (version_compare($current_version, '3.0.6', '<')) {
1251 - mxchat_migrate_deprecated_models();
1252 - }
1253 -
1254 - // 3.1.2: Convert chat transcripts table to utf8mb4 for emoji support
1255 - if (version_compare($current_version, '3.1.2', '<')) {
1256 - mxchat_migrate_transcripts_charset();
1257 - }
1258 -
1259 - // 3.1.7: Clean up stale shared session email/name entries
1260 - if (version_compare($current_version, '3.1.7', '<')) {
1261 - delete_option('mxchat_email_null');
1262 - delete_option('mxchat_name_null');
1263 - }
1264 -
1265 - // 3.2.4: Backfill active embedding model option for the warning UI
1266 - // (replaces the per-row column tracking from 3.2.3, which was reverted)
1267 - if (version_compare($current_version, '3.2.4', '<')) {
1268 - mxchat_backfill_active_embedding_model();
1269 - }
1270 -
1271 740 // Run full activation to ensure everything is up to date
1272 741 mxchat_activate();
1273 742
1274 743 // Run migration functions
@@ -1400,59 +869,31 @@
1400 869 function mxchat_handle_live_agent_update() {
1401 870 // Get the CURRENT stored version (before it gets updated)
1402 871 $current_version = get_option('mxchat_plugin_version', '0.0.0');
1403 872 $new_version = '2.2.2';
1404 -
873 +
1405 874 // Only run this once for the update to 2.2.2
1406 875 $update_handled = get_option('mxchat_live_agent_update_2_2_2_handled', false);
1407 -
876 +
1408 877 // Check if we're upgrading TO 2.2.2 and haven't handled this yet
1409 878 if (version_compare($current_version, $new_version, '<') && !$update_handled) {
1410 879 $options = get_option('mxchat_options', array());
1411 -
880 +
1412 881 // Check if live agent was previously enabled
1413 882 if (isset($options['live_agent_status']) && $options['live_agent_status'] === 'on') {
1414 883 // Disable live agent
1415 884 $options['live_agent_status'] = 'off';
1416 885 update_option('mxchat_options', $options);
1417 -
886 +
1418 887 // Set flag to show the notification banner
1419 888 update_option('mxchat_show_live_agent_disabled_notice', true);
1420 889 }
1421 -
890 +
1422 891 // Mark this update as handled
1423 892 update_option('mxchat_live_agent_update_2_2_2_handled', true);
1424 893 }
1425 894 }
1426 895
1427 -/**
1428 - * Handle theme migration notice for version 3.0.1
1429 - * Shows a dismissible notice to Pro users about migrating AI-generated themes
1430 - */
1431 -function mxchat_handle_theme_migration_notice() {
1432 - // Get the CURRENT stored version (before it gets updated)
1433 - $current_version = get_option('mxchat_plugin_version', '0.0.0');
1434 - $target_version = '3.0.1';
1435 -
1436 - // Only run this once for the update to 3.0.1
1437 - $update_handled = get_option('mxchat_theme_migration_update_3_0_1_handled', false);
1438 -
1439 - // Check if we're upgrading TO 3.0.1 and haven't handled this yet
1440 - if (version_compare($current_version, $target_version, '<') && !$update_handled) {
1441 - // Check if Pro is activated - only show to Pro users
1442 - $license_status = get_option('mxchat_license_status', 'inactive');
1443 - $is_pro = ($license_status === 'active');
1444 -
1445 - if ($is_pro) {
1446 - // Set flag to show the theme migration notification banner
1447 - update_option('mxchat_show_theme_migration_notice', true);
1448 - }
1449 -
1450 - // Mark this update as handled (whether Pro or not)
1451 - update_option('mxchat_theme_migration_update_3_0_1_handled', true);
1452 - }
1453 -}
1454 -
1455 896 // Initialize plugin safely
1456 897 function mxchat_init() {
1457 898 // Include all class files first
1458 899 mxchat_include_classes();
@@ -1484,25 +925,10 @@
1484 925 // Initialize meta box class
1485 926 if (class_exists('MxChat_Meta_Box')) {
1486 927 new MxChat_Meta_Box();
1487 928 }
1488 -
1489 929 }
1490 -
1491 - // Initialize content generator globally — it registers wp_head hook
1492 - // for frontend CSS injection, plus wp_ajax_ hooks for admin.
1493 - if (class_exists('MxChat_Content_Generator')) {
1494 - new MxChat_Content_Generator();
1495 - }
1496 -
1497 - // Initialize REST API globally — endpoints must be registered on
1498 - // every request (admin and frontend) so they're reachable via /wp-json/.
1499 - // Endpoints are auth-gated and locked until the site owner generates
1500 - // a token in MxChat → API Access.
1501 - if (class_exists('MxChat_Rest_Api')) {
1502 - new MxChat_Rest_Api();
1503 - }
1504 -
930 +
1505 931 // Initialize public classes
1506 932 if (class_exists('MxChat_Public')) {
1507 933 $mxchat_public = new MxChat_Public();
1508 934 }
@@ -1546,57 +972,10 @@
1546 972 $checked = true;
1547 973
1548 974 mxchat_migrate_pinecone_roles_add_bot_id();
1549 975 mxchat_migrate_add_content_type_column();
1550 - mxchat_migrate_add_translations_table();
1551 - mxchat_migrate_add_session_ratings_table();
1552 976 }
1553 977
1554 -/**
1555 - * Migration: Create per-session satisfaction ratings table (v3.2.6)
1556 - * For users upgrading from versions before 3.2.6
1557 - */
1558 -function mxchat_migrate_add_session_ratings_table() {
1559 - $migration_key = 'mxchat_session_ratings_table_created';
1560 - if (get_option($migration_key)) {
1561 - return;
1562 - }
1563 - mxchat_create_session_ratings_table();
1564 - update_option($migration_key, '3.2.6');
1565 -}
1566 -
1567 -/**
1568 - * Migration: Create transcript translations table (v3.0.4)
1569 - * For users upgrading from versions before 3.0.4
1570 - */
1571 -function mxchat_migrate_add_translations_table() {
1572 - $migration_key = 'mxchat_translations_table_created';
1573 -
1574 - // Check if migration already ran
1575 - if (get_option($migration_key)) {
1576 - return;
1577 - }
1578 -
1579 - // Create the translations table
1580 - mxchat_create_translations_table();
1581 -
1582 - // Mark migration as complete
1583 - update_option($migration_key, '3.0.4');
1584 -}
1585 -
1586 -/**
1587 - * Migration: Update deprecated Gemini embedding model (v3.0.5)
1588 - * Updates gemini-embedding-exp-03-07 to gemini-embedding-001 for users who had it selected
1589 - */
1590 -function mxchat_migrate_gemini_embedding_model() {
1591 - $options = get_option('mxchat_options', array());
1592 -
1593 - if (isset($options['embedding_model']) && $options['embedding_model'] === 'gemini-embedding-exp-03-07') {
1594 - $options['embedding_model'] = 'gemini-embedding-001';
1595 - update_option('mxchat_options', $options);
1596 - }
1597 -}
1598 -
1599 978 // Register activation hook
1600 979 register_activation_hook(__FILE__, 'mxchat_activate');
1601 980
1602 981 // Add cron schedule
@@ -1608,67 +987,5 @@
1608 987 return $schedules;
1609 988 });
1610 989
1611 990 // Register deactivation hook
1612 -register_deactivation_hook(__FILE__, 'mxchat_deactivate');
1613 -
1614 -/**
1615 - * Per-session satisfaction rating: AJAX save handler (v3.2.6).
1616 - * Records one 👍/👎 + optional feedback per chat session. The UNIQUE KEY on
1617 - * session_id makes this naturally idempotent — only the first rating per
1618 - * session is stored; duplicate POSTs are silent no-ops.
1619 - */
1620 -function mxchat_save_session_rating() {
1621 - global $wpdb;
1622 -
1623 - $session_id = isset($_POST['session_id']) ? sanitize_text_field(wp_unslash($_POST['session_id'])) : '';
1624 - $bot_id = isset($_POST['bot_id']) ? sanitize_text_field(wp_unslash($_POST['bot_id'])) : 'default';
1625 - $rating_raw = isset($_POST['rating']) ? (int) $_POST['rating'] : 0;
1626 - $feedback = isset($_POST['feedback']) ? sanitize_textarea_field(wp_unslash($_POST['feedback'])) : '';
1627 -
1628 - if ($session_id === '' || ($rating_raw !== 1 && $rating_raw !== -1)) {
1629 - wp_send_json_error(array('message' => 'invalid_input'), 400);
1630 - }
1631 -
1632 - if (strlen($feedback) > 1000) {
1633 - $feedback = substr($feedback, 0, 1000);
1634 - }
1635 -
1636 - $table_name = $wpdb->prefix . 'mxchat_session_ratings';
1637 - $existing = $wpdb->get_var($wpdb->prepare(
1638 - "SELECT id FROM $table_name WHERE session_id = %s LIMIT 1",
1639 - $session_id
1640 - ));
1641 -
1642 - if ($existing) {
1643 - if ($feedback !== '') {
1644 - $wpdb->update(
1645 - $table_name,
1646 - array('rating_feedback' => $feedback),
1647 - array('id' => (int) $existing),
1648 - array('%s'),
1649 - array('%d')
1650 - );
1651 - }
1652 - wp_send_json_success(array('updated' => true));
1653 - }
1654 -
1655 - $inserted = $wpdb->insert(
1656 - $table_name,
1657 - array(
1658 - 'session_id' => $session_id,
1659 - 'bot_id' => $bot_id !== '' ? $bot_id : 'default',
1660 - 'rating_value' => $rating_raw,
1661 - 'rating_feedback' => $feedback !== '' ? $feedback : null,
1662 - 'created_at' => current_time('mysql'),
1663 - ),
1664 - array('%s', '%s', '%d', '%s', '%s')
1665 - );
1666 -
1667 - if ($inserted === false) {
1668 - wp_send_json_error(array('message' => 'db_insert_failed'), 500);
1669 - }
1670 -
1671 - wp_send_json_success(array('saved' => true));
1672 -}
1673 -add_action('wp_ajax_mxchat_save_rating', 'mxchat_save_session_rating');
1674 -add_action('wp_ajax_nopriv_mxchat_save_rating', 'mxchat_save_session_rating');
991 +register_deactivation_hook(__FILE__, 'mxchat_deactivate');