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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 -719 3.2.9 → 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: 3.2.9
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',
@@ -356,12 +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-mxchat-cache-purge.php',
363 - 'includes/class-rest-api.php',
364 54 'admin/class-ajax-handler.php',
365 55 'admin/class-pinecone-manager.php',
366 56 'admin/class-knowledge-manager.php'
367 57 );
@@ -373,45 +63,11 @@
373 63 } else {
374 64 //error_log('MxChat: Missing class file - ' . $file);
375 65 }
376 66 }
377 -
378 - // Admin pages that aren't classes (procedural include).
379 - if (is_admin()) {
380 - $admin_api_page = plugin_dir_path(__FILE__) . 'includes/admin-api-page.php';
381 - if (file_exists($admin_api_page)) {
382 - require_once $admin_api_page;
383 - }
384 - // f7c7d4 renamed this file admin-dashboard-page.php → admin-onboarding-page.php.
385 - // The require MUST live here (admin bootstrap) and not just inside
386 - // mxchat_add_plugin_page() on the admin_menu hook — admin_menu does NOT
387 - // fire on admin-ajax.php requests, so the wizard's AJAX handlers
388 - // (plan-905439: mxchat_onboarding_kb_status / save_step / mark_step /
389 - // auto_graduate + the f7c7d4 dismiss handler) would never register.
390 - $admin_onboarding_page = plugin_dir_path(__FILE__) . 'includes/admin-onboarding-page.php';
391 - if (file_exists($admin_onboarding_page)) {
392 - require_once $admin_onboarding_page;
393 - }
394 - }
395 67 }
396 68
397 69 /**
398 - * Lazy-load the PDF parser library only when needed.
399 - * Avoids loading 44 files on every page request.
400 - */
401 -function mxchat_load_pdf_parser() {
402 - if (class_exists('\Smalot\PdfParser\Parser')) {
403 - return true;
404 - }
405 - $autoload_path = plugin_dir_path(__FILE__) . 'includes/pdf-parser/alt_autoload.php';
406 - if (file_exists($autoload_path)) {
407 - require_once $autoload_path;
408 - return true;
409 - }
410 - return false;
411 -}
412 -
413 -/**
414 70 * Create URL click tracking table
415 71 */
416 72 function mxchat_create_url_clicks_table() {
417 73 global $wpdb;
@@ -679,9 +335,9 @@
679 335
680 336 // Add index for bot_id
681 337 $wpdb->query("ALTER TABLE {$table_name} ADD KEY bot_id (bot_id)");
682 338
683 - //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');
684 340 }
685 341
686 342 // Mark migration as complete
687 343 update_option('mxchat_pinecone_roles_migration_version', '2.5.2');
@@ -716,9 +372,9 @@
716 372
717 373 // Add index for better query performance
718 374 $wpdb->query("ALTER TABLE {$table_name} ADD KEY content_type (content_type)");
719 375
720 - //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');
721 377 }
722 378
723 379 // Mark migration as complete
724 380 update_option('mxchat_content_type_migration_version', '2.5.6');
@@ -724,33 +380,8 @@
724 380 update_option('mxchat_content_type_migration_version', '2.5.6');
725 381 }
726 382
727 383 /**
728 - * 3.2.4: Backfill the active embedding model option for installs that already
729 - * have KB content but no stamped model. The mismatch warning compares this
730 - * against the user's currently selected model — no per-row column needed.
731 - */
732 -function mxchat_backfill_active_embedding_model() {
733 - global $wpdb;
734 -
735 - if (get_option('mxchat_active_embedding_model', '') !== '') {
736 - return;
737 - }
738 -
739 - $kb_table = $wpdb->prefix . 'mxchat_system_prompt_content';
740 - if ($wpdb->get_var("SHOW TABLES LIKE '{$kb_table}'") !== $kb_table) {
741 - return;
742 - }
743 -
744 - $kb_count = (int) $wpdb->get_var("SELECT COUNT(*) FROM {$kb_table}");
745 - if ($kb_count > 0) {
746 - $options = get_option('mxchat_options', array());
747 - $current_model = $options['embedding_model'] ?? 'text-embedding-ada-002';
748 - update_option('mxchat_active_embedding_model', $current_model, false);
749 - }
750 -}
751 -
752 -/**
753 384 * 2.5.2: Create queue processing tables for reliable background processing
754 385 */
755 386 function mxchat_create_queue_tables() {
756 387 global $wpdb;
@@ -798,58 +429,8 @@
798 429 //error_log("MxChat: Queue tables created/updated successfully");
799 430 }
800 431
801 432 /**
802 - * Create transcript translations table for persisting translations
803 - */
804 -function mxchat_create_translations_table() {
805 - global $wpdb;
806 - $charset_collate = $wpdb->get_charset_collate();
807 -
808 - $table_name = $wpdb->prefix . 'mxchat_transcript_translations';
809 - $sql = "CREATE TABLE $table_name (
810 - id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
811 - session_id varchar(255) NOT NULL,
812 - language_code varchar(10) NOT NULL,
813 - translations longtext NOT NULL,
814 - created_at datetime NOT NULL,
815 - updated_at datetime NOT NULL,
816 - PRIMARY KEY (id),
817 - UNIQUE KEY session_lang (session_id, language_code),
818 - KEY session_id (session_id)
819 - ) $charset_collate;";
820 -
821 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
822 - dbDelta($sql);
823 -}
824 -
825 -/**
826 - * Create per-session satisfaction ratings table (v3.2.6)
827 - * Stores one 👍/👎 rating + optional feedback per chat session.
828 - */
829 -function mxchat_create_session_ratings_table() {
830 - global $wpdb;
831 - $charset_collate = $wpdb->get_charset_collate();
832 -
833 - $table_name = $wpdb->prefix . 'mxchat_session_ratings';
834 - $sql = "CREATE TABLE $table_name (
835 - id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
836 - session_id varchar(255) NOT NULL,
837 - bot_id varchar(50) NOT NULL DEFAULT 'default',
838 - rating_value tinyint(1) NOT NULL,
839 - rating_feedback text DEFAULT NULL,
840 - created_at datetime NOT NULL,
841 - PRIMARY KEY (id),
842 - UNIQUE KEY session_id (session_id),
843 - KEY bot_id (bot_id),
844 - KEY created_at (created_at)
845 - ) $charset_collate;";
846 -
847 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
848 - dbDelta($sql);
849 -}
850 -
851 -/**
852 433 * 2.5.2: Fix URL column size to support long URLs (especially with UTF-8 encoding)
853 434 * This fixes "url, source_url. The supplied values may be too long" errors
854 435 */
855 436 function mxchat_fix_url_column_size() {
@@ -872,80 +453,22 @@
872 453
873 454 /**
874 455 * Migrate deprecated AI models to their replacements
875 456 * Version 2.5.1: Migrate Claude 3.5 Sonnet (deprecated) to Claude 3.7 Sonnet
876 - * Version 3.1.2: Convert chat transcripts table to utf8mb4 for emoji support
877 - * Without utf8mb4, any bot response containing emojis silently fails to insert.
878 457 */
879 -function mxchat_migrate_transcripts_charset() {
880 - global $wpdb;
881 - $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
882 - $wpdb->query("ALTER TABLE $table_name CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci");
883 -}
884 -
885 -/**
886 - * Version 3.0.55: Migrate GPT-4 series models (deprecated 2026-02-17) to GPT-5 series
887 - */
888 458 function mxchat_migrate_deprecated_models() {
889 459 $options = get_option('mxchat_options', array());
890 - $migrated = false;
891 - $migration_message = '';
892 -
893 - if (!isset($options['model'])) {
894 - return;
895 - }
896 -
897 - $current_model = $options['model'];
898 -
899 - // Migrate deprecated Claude models to Claude Opus 4.6 (recommended replacement per Anthropic)
900 - $deprecated_claude_models = array(
901 - 'claude-3-5-sonnet-20240620', // Retired Oct 28, 2025
902 - 'claude-3-5-sonnet-20241022', // Retired Oct 28, 2025
903 - 'claude-3-7-sonnet-20250219', // Retiring Feb 19, 2026
904 - 'claude-3-opus-20240229', // Retired Jan 5, 2026
905 - 'claude-3-sonnet-20240229', // Legacy
906 - 'claude-3-haiku-20240307', // Legacy
907 - );
908 - if (in_array($current_model, $deprecated_claude_models, true)) {
909 - $options['model'] = 'claude-opus-4-6';
910 - $migrated = true;
911 - $migration_message = sprintf(
912 - 'Your chatbot model has been automatically updated from %s to Claude Opus 4.6 due to Anthropic deprecating older Claude models.',
913 - $current_model
914 - );
915 - }
916 -
917 - // Migrate deprecated Claude Haiku 3.5 to Claude Haiku 4.5
918 - if ($current_model === 'claude-3-5-haiku-20241022') {
919 - $options['model'] = 'claude-haiku-4-5-20251001';
920 - $migrated = true;
921 - $migration_message = 'Your chatbot model has been automatically updated from Claude Haiku 3.5 to Claude Haiku 4.5 due to Anthropic deprecating the older model.';
922 - }
923 -
924 - // Migrate deprecated GPT-4 series and GPT-3.5 Turbo to GPT-5.1 Chat Latest
925 - if (in_array($current_model, array('gpt-4o', 'gpt-4.1-2025-04-14', 'gpt-4-turbo', 'gpt-4', 'gpt-3.5-turbo'), true)) {
926 - $options['model'] = 'gpt-5.1-chat-latest';
927 - $migrated = true;
928 - $migration_message = sprintf(
929 - 'Your chatbot model has been automatically updated from %s to GPT-5.1 Chat Latest due to OpenAI deprecating older models.',
930 - $current_model
931 - );
932 - }
933 -
934 - // Migrate deprecated GPT-4o Mini and GPT-4.1 Mini to GPT-5 Mini
935 - if (in_array($current_model, array('gpt-4o-mini', 'gpt-4.1-mini'), true)) {
936 - $options['model'] = 'gpt-5-mini';
937 - $migrated = true;
938 - $migration_message = sprintf(
939 - 'Your chatbot model has been automatically updated from %s to GPT-5 Mini due to OpenAI deprecating GPT-4 series models.',
940 - $current_model
941 - );
942 - }
943 -
944 - if ($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';
945 465 update_option('mxchat_options', $options);
466 +
467 + // Set a flag to show admin notice
946 468 update_option('mxchat_model_migrated_notice', true);
947 - update_option('mxchat_model_migration_message', $migration_message);
469 +
470 + //error_log('MxChat: Migrated deprecated Claude 3.5 Sonnet to Claude 3.7 Sonnet');
948 471 }
949 472 }
950 473
951 474 /**
@@ -952,19 +475,17 @@
952 475 * Show admin notice after model migration
953 476 */
954 477 function mxchat_show_migration_notice() {
955 478 if (get_option('mxchat_model_migrated_notice')) {
956 - $migration_message = get_option('mxchat_model_migration_message', __('Your chatbot model has been automatically updated due to a model deprecation.', 'mxchat'));
957 479 ?>
958 480 <div class="notice notice-info is-dismissible">
959 481 <p>
960 482 <strong><?php esc_html_e('MxChat Model Updated', 'mxchat'); ?></strong><br>
961 - <?php echo esc_html($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'); ?>
962 484 </p>
963 485 </div>
964 486 <?php
965 487 delete_option('mxchat_model_migrated_notice');
966 - delete_option('mxchat_model_migration_message');
967 488 }
968 489 }
969 490
970 491 function mxchat_activate() {
@@ -1004,26 +525,13 @@
1004 525 enabled_bots LONGTEXT DEFAULT NULL,
1005 526 PRIMARY KEY (id)
1006 527 ) $charset_collate;";
1007 528
1008 - // Individual Intent Phrases Table - each phrase gets its own embedding vector
1009 - $intent_phrases_table = $wpdb->prefix . 'mxchat_intent_phrases';
1010 - $sql_intent_phrases_table = "CREATE TABLE $intent_phrases_table (
1011 - id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
1012 - intent_id BIGINT(20) UNSIGNED NOT NULL,
1013 - phrase TEXT NOT NULL,
1014 - embedding_vector LONGTEXT NOT NULL,
1015 - created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
1016 - PRIMARY KEY (id),
1017 - KEY intent_id (intent_id)
1018 - ) $charset_collate;";
1019 -
1020 529 require_once ABSPATH . 'wp-admin/includes/upgrade.php';
1021 530
1022 531 // Create other tables
1023 532 dbDelta($sql_system_prompt);
1024 533 dbDelta($sql_intents_table);
1025 - dbDelta($sql_intent_phrases_table);
1026 534
1027 535 // Create URL click tracking table
1028 536 mxchat_create_url_clicks_table();
1029 537
@@ -1032,14 +540,8 @@
1032 540
1033 541 // NEW 2.5.2: Create queue processing tables
1034 542 mxchat_create_queue_tables();
1035 543
1036 - // Create transcript translations table
1037 - mxchat_create_translations_table();
1038 -
1039 - // Create per-session satisfaction ratings table (v3.2.6)
1040 - mxchat_create_session_ratings_table();
1041 -
1042 544 // Ensure additional columns in system prompt table
1043 545 $existing_system_columns = $wpdb->get_results("SHOW COLUMNS FROM $system_prompt_table");
1044 546 if (!empty($existing_system_columns)) {
1045 547 $existing_system_column_names = array_column($existing_system_columns, 'Field');
@@ -1082,11 +584,8 @@
1082 584
1083 585 // Run migration for existing installations
1084 586 mxchat_migrate_pinecone_roles_add_bot_id();
1085 587
1086 - // 3.2.4: Backfill active embedding model option (replaces 3.2.3 column-based tracking)
1087 - mxchat_backfill_active_embedding_model();
1088 -
1089 588 // Setup cron jobs
1090 589 mxchat_setup_cron_jobs();
1091 590
1092 591 // Update version
@@ -1121,14 +620,13 @@
1121 620 // Clear fallback flags if cron scheduling succeeded
1122 621 delete_option('mxchat_use_fallback_rate_limits');
1123 622 }
1124 623
1125 - // Schedule transcript cleanup if configured (bucket dropdown OR custom retention-days > 0)
624 + // Schedule transcript cleanup if configured
1126 625 $transcript_options = get_option('mxchat_transcripts_options', array());
1127 626 $cleanup_interval = isset($transcript_options['mxchat_auto_delete_transcripts']) ? $transcript_options['mxchat_auto_delete_transcripts'] : 'never';
1128 - $custom_retention = isset($transcript_options['mxchat_retention_days']) ? (int) $transcript_options['mxchat_retention_days'] : 0;
1129 -
1130 - if ($cleanup_interval !== 'never' || $custom_retention > 0) {
627 +
628 + if ($cleanup_interval !== 'never') {
1131 629 // Check if not already scheduled
1132 630 if (!wp_next_scheduled('mxchat_cleanup_old_transcripts')) {
1133 631 // Schedule to run daily at 3 AM
1134 632 $next_run = strtotime('tomorrow 3:00 AM');
@@ -1205,14 +703,11 @@
1205 703
1206 704 // Version-specific migrations
1207 705 if ($current_version !== $plugin_version) {
1208 706 //error_log("MxChat: Version change detected: $current_version -> $plugin_version");
1209 -
707 +
1210 708 // Run live agent update BEFORE updating the stored version
1211 709 mxchat_handle_live_agent_update();
1212 -
1213 - // Run theme migration notice for 3.0.1 (AI theme CSS structure changes)
1214 - mxchat_handle_theme_migration_notice();
1215 710
1216 711 // Run role restriction migration for 2.4.1
1217 712 if (version_compare($current_version, '2.4.1', '<')) {
1218 713 mxchat_add_role_restriction_column();
@@ -1241,35 +736,8 @@
1241 736 mxchat_ensure_all_columns($chat_table);
1242 737 //error_log("MxChat: rag_context column migration for 2.6.0");
1243 738 }
1244 739
1245 - // 3.0.5: Migrate deprecated Gemini embedding model
1246 - if (version_compare($current_version, '3.0.5', '<')) {
1247 - mxchat_migrate_gemini_embedding_model();
1248 - }
1249 -
1250 - // 3.0.6: Migrate deprecated OpenAI and Claude models
1251 - if (version_compare($current_version, '3.0.6', '<')) {
1252 - mxchat_migrate_deprecated_models();
1253 - }
1254 -
1255 - // 3.1.2: Convert chat transcripts table to utf8mb4 for emoji support
1256 - if (version_compare($current_version, '3.1.2', '<')) {
1257 - mxchat_migrate_transcripts_charset();
1258 - }
1259 -
1260 - // 3.1.7: Clean up stale shared session email/name entries
1261 - if (version_compare($current_version, '3.1.7', '<')) {
1262 - delete_option('mxchat_email_null');
1263 - delete_option('mxchat_name_null');
1264 - }
1265 -
1266 - // 3.2.4: Backfill active embedding model option for the warning UI
1267 - // (replaces the per-row column tracking from 3.2.3, which was reverted)
1268 - if (version_compare($current_version, '3.2.4', '<')) {
1269 - mxchat_backfill_active_embedding_model();
1270 - }
1271 -
1272 740 // Run full activation to ensure everything is up to date
1273 741 mxchat_activate();
1274 742
1275 743 // Run migration functions
@@ -1401,59 +869,31 @@
1401 869 function mxchat_handle_live_agent_update() {
1402 870 // Get the CURRENT stored version (before it gets updated)
1403 871 $current_version = get_option('mxchat_plugin_version', '0.0.0');
1404 872 $new_version = '2.2.2';
1405 -
873 +
1406 874 // Only run this once for the update to 2.2.2
1407 875 $update_handled = get_option('mxchat_live_agent_update_2_2_2_handled', false);
1408 -
876 +
1409 877 // Check if we're upgrading TO 2.2.2 and haven't handled this yet
1410 878 if (version_compare($current_version, $new_version, '<') && !$update_handled) {
1411 879 $options = get_option('mxchat_options', array());
1412 -
880 +
1413 881 // Check if live agent was previously enabled
1414 882 if (isset($options['live_agent_status']) && $options['live_agent_status'] === 'on') {
1415 883 // Disable live agent
1416 884 $options['live_agent_status'] = 'off';
1417 885 update_option('mxchat_options', $options);
1418 -
886 +
1419 887 // Set flag to show the notification banner
1420 888 update_option('mxchat_show_live_agent_disabled_notice', true);
1421 889 }
1422 -
890 +
1423 891 // Mark this update as handled
1424 892 update_option('mxchat_live_agent_update_2_2_2_handled', true);
1425 893 }
1426 894 }
1427 895
1428 -/**
1429 - * Handle theme migration notice for version 3.0.1
1430 - * Shows a dismissible notice to Pro users about migrating AI-generated themes
1431 - */
1432 -function mxchat_handle_theme_migration_notice() {
1433 - // Get the CURRENT stored version (before it gets updated)
1434 - $current_version = get_option('mxchat_plugin_version', '0.0.0');
1435 - $target_version = '3.0.1';
1436 -
1437 - // Only run this once for the update to 3.0.1
1438 - $update_handled = get_option('mxchat_theme_migration_update_3_0_1_handled', false);
1439 -
1440 - // Check if we're upgrading TO 3.0.1 and haven't handled this yet
1441 - if (version_compare($current_version, $target_version, '<') && !$update_handled) {
1442 - // Check if Pro is activated - only show to Pro users
1443 - $license_status = get_option('mxchat_license_status', 'inactive');
1444 - $is_pro = ($license_status === 'active');
1445 -
1446 - if ($is_pro) {
1447 - // Set flag to show the theme migration notification banner
1448 - update_option('mxchat_show_theme_migration_notice', true);
1449 - }
1450 -
1451 - // Mark this update as handled (whether Pro or not)
1452 - update_option('mxchat_theme_migration_update_3_0_1_handled', true);
1453 - }
1454 -}
1455 -
1456 896 // Initialize plugin safely
1457 897 function mxchat_init() {
1458 898 // Include all class files first
1459 899 mxchat_include_classes();
@@ -1485,32 +925,10 @@
1485 925 // Initialize meta box class
1486 926 if (class_exists('MxChat_Meta_Box')) {
1487 927 new MxChat_Meta_Box();
1488 928 }
1489 -
1490 929 }
1491 -
1492 - // Initialize content generator globally — it registers wp_head hook
1493 - // for frontend CSS injection, plus wp_ajax_ hooks for admin.
1494 - if (class_exists('MxChat_Content_Generator')) {
1495 - new MxChat_Content_Generator();
1496 - }
1497 -
1498 - // Initialize cache purge globally — settings writes can happen on any
1499 - // request type (admin screens, admin-ajax autosave, wp-cli), and the
1500 - // deferred-purge cron event fires on front-end requests.
1501 - if (class_exists('MxChat_Cache_Purge')) {
1502 - MxChat_Cache_Purge::init();
1503 - }
1504 -
1505 - // Initialize REST API globally — endpoints must be registered on
1506 - // every request (admin and frontend) so they're reachable via /wp-json/.
1507 - // Endpoints are auth-gated and locked until the site owner generates
1508 - // a token in MxChat → API Access.
1509 - if (class_exists('MxChat_Rest_Api')) {
1510 - new MxChat_Rest_Api();
1511 - }
1512 -
930 +
1513 931 // Initialize public classes
1514 932 if (class_exists('MxChat_Public')) {
1515 933 $mxchat_public = new MxChat_Public();
1516 934 }
@@ -1554,57 +972,10 @@
1554 972 $checked = true;
1555 973
1556 974 mxchat_migrate_pinecone_roles_add_bot_id();
1557 975 mxchat_migrate_add_content_type_column();
1558 - mxchat_migrate_add_translations_table();
1559 - mxchat_migrate_add_session_ratings_table();
1560 976 }
1561 977
1562 -/**
1563 - * Migration: Create per-session satisfaction ratings table (v3.2.6)
1564 - * For users upgrading from versions before 3.2.6
1565 - */
1566 -function mxchat_migrate_add_session_ratings_table() {
1567 - $migration_key = 'mxchat_session_ratings_table_created';
1568 - if (get_option($migration_key)) {
1569 - return;
1570 - }
1571 - mxchat_create_session_ratings_table();
1572 - update_option($migration_key, '3.2.6');
1573 -}
1574 -
1575 -/**
1576 - * Migration: Create transcript translations table (v3.0.4)
1577 - * For users upgrading from versions before 3.0.4
1578 - */
1579 -function mxchat_migrate_add_translations_table() {
1580 - $migration_key = 'mxchat_translations_table_created';
1581 -
1582 - // Check if migration already ran
1583 - if (get_option($migration_key)) {
1584 - return;
1585 - }
1586 -
1587 - // Create the translations table
1588 - mxchat_create_translations_table();
1589 -
1590 - // Mark migration as complete
1591 - update_option($migration_key, '3.0.4');
1592 -}
1593 -
1594 -/**
1595 - * Migration: Update deprecated Gemini embedding model (v3.0.5)
1596 - * Updates gemini-embedding-exp-03-07 to gemini-embedding-001 for users who had it selected
1597 - */
1598 -function mxchat_migrate_gemini_embedding_model() {
1599 - $options = get_option('mxchat_options', array());
1600 -
1601 - if (isset($options['embedding_model']) && $options['embedding_model'] === 'gemini-embedding-exp-03-07') {
1602 - $options['embedding_model'] = 'gemini-embedding-001';
1603 - update_option('mxchat_options', $options);
1604 - }
1605 -}
1606 -
1607 978 // Register activation hook
1608 979 register_activation_hook(__FILE__, 'mxchat_activate');
1609 980
1610 981 // Add cron schedule
@@ -1616,67 +987,5 @@
1616 987 return $schedules;
1617 988 });
1618 989
1619 990 // Register deactivation hook
1620 -register_deactivation_hook(__FILE__, 'mxchat_deactivate');
1621 -
1622 -/**
1623 - * Per-session satisfaction rating: AJAX save handler (v3.2.6).
1624 - * Records one 👍/👎 + optional feedback per chat session. The UNIQUE KEY on
1625 - * session_id makes this naturally idempotent — only the first rating per
1626 - * session is stored; duplicate POSTs are silent no-ops.
1627 - */
1628 -function mxchat_save_session_rating() {
1629 - global $wpdb;
1630 -
1631 - $session_id = isset($_POST['session_id']) ? sanitize_text_field(wp_unslash($_POST['session_id'])) : '';
1632 - $bot_id = isset($_POST['bot_id']) ? sanitize_text_field(wp_unslash($_POST['bot_id'])) : 'default';
1633 - $rating_raw = isset($_POST['rating']) ? (int) $_POST['rating'] : 0;
1634 - $feedback = isset($_POST['feedback']) ? sanitize_textarea_field(wp_unslash($_POST['feedback'])) : '';
1635 -
1636 - if ($session_id === '' || ($rating_raw !== 1 && $rating_raw !== -1)) {
1637 - wp_send_json_error(array('message' => 'invalid_input'), 400);
1638 - }
1639 -
1640 - if (strlen($feedback) > 1000) {
1641 - $feedback = substr($feedback, 0, 1000);
1642 - }
1643 -
1644 - $table_name = $wpdb->prefix . 'mxchat_session_ratings';
1645 - $existing = $wpdb->get_var($wpdb->prepare(
1646 - "SELECT id FROM $table_name WHERE session_id = %s LIMIT 1",
1647 - $session_id
1648 - ));
1649 -
1650 - if ($existing) {
1651 - if ($feedback !== '') {
1652 - $wpdb->update(
1653 - $table_name,
1654 - array('rating_feedback' => $feedback),
1655 - array('id' => (int) $existing),
1656 - array('%s'),
1657 - array('%d')
1658 - );
1659 - }
1660 - wp_send_json_success(array('updated' => true));
1661 - }
1662 -
1663 - $inserted = $wpdb->insert(
1664 - $table_name,
1665 - array(
1666 - 'session_id' => $session_id,
1667 - 'bot_id' => $bot_id !== '' ? $bot_id : 'default',
1668 - 'rating_value' => $rating_raw,
1669 - 'rating_feedback' => $feedback !== '' ? $feedback : null,
1670 - 'created_at' => current_time('mysql'),
1671 - ),
1672 - array('%s', '%s', '%d', '%s', '%s')
1673 - );
1674 -
1675 - if ($inserted === false) {
1676 - wp_send_json_error(array('message' => 'db_insert_failed'), 500);
1677 - }
1678 -
1679 - wp_send_json_success(array('saved' => true));
1680 -}
1681 -add_action('wp_ajax_mxchat_save_rating', 'mxchat_save_session_rating');
1682 -add_action('wp_ajax_nopriv_mxchat_save_rating', 'mxchat_save_session_rating');
991 +register_deactivation_hook(__FILE__, 'mxchat_deactivate');