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MxChat – AI Chatbot & Content Generation for WordPress / 2.6.2
MxChat – AI Chatbot & Content Generation for WordPress v2.6.2
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 -720 3.2.9 → 2.6.2 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: 2.6.2
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',
@@ -355,13 +47,10 @@
355 47 'includes/class-mxchat-public.php',
356 48 'includes/class-mxchat-utils.php',
357 49 'includes/class-mxchat-user.php',
358 50 'includes/class-mxchat-meta-box.php',
359 - 'includes/class-mxchat-chunker.php',
51 + 'includes/pdf-parser/alt_autoload.php',
360 52 '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 53 'admin/class-ajax-handler.php',
365 54 'admin/class-pinecone-manager.php',
366 55 'admin/class-knowledge-manager.php'
367 56 );
@@ -373,45 +62,11 @@
373 62 } else {
374 63 //error_log('MxChat: Missing class file - ' . $file);
375 64 }
376 65 }
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 66 }
396 67
397 68 /**
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 69 * Create URL click tracking table
415 70 */
416 71 function mxchat_create_url_clicks_table() {
417 72 global $wpdb;
@@ -679,9 +334,9 @@
679 334
680 335 // Add index for bot_id
681 336 $wpdb->query("ALTER TABLE {$table_name} ADD KEY bot_id (bot_id)");
682 337
683 - //error_log('MxChat: Successfully added bot_id column to mxchat_pinecone_roles table');
338 + error_log('MxChat: Successfully added bot_id column to mxchat_pinecone_roles table');
684 339 }
685 340
686 341 // Mark migration as complete
687 342 update_option('mxchat_pinecone_roles_migration_version', '2.5.2');
@@ -716,9 +371,9 @@
716 371
717 372 // Add index for better query performance
718 373 $wpdb->query("ALTER TABLE {$table_name} ADD KEY content_type (content_type)");
719 374
720 - //error_log('MxChat: Successfully added content_type column to mxchat_system_prompt_content table');
375 + error_log('MxChat: Successfully added content_type column to mxchat_system_prompt_content table');
721 376 }
722 377
723 378 // Mark migration as complete
724 379 update_option('mxchat_content_type_migration_version', '2.5.6');
@@ -724,33 +379,8 @@
724 379 update_option('mxchat_content_type_migration_version', '2.5.6');
725 380 }
726 381
727 382 /**
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 -/**
753 383 * 2.5.2: Create queue processing tables for reliable background processing
754 384 */
755 385 function mxchat_create_queue_tables() {
756 386 global $wpdb;
@@ -798,58 +428,8 @@
798 428 //error_log("MxChat: Queue tables created/updated successfully");
799 429 }
800 430
801 431 /**
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 -/**
852 432 * 2.5.2: Fix URL column size to support long URLs (especially with UTF-8 encoding)
853 433 * This fixes "url, source_url. The supplied values may be too long" errors
854 434 */
855 435 function mxchat_fix_url_column_size() {
@@ -872,80 +452,22 @@
872 452
873 453 /**
874 454 * Migrate deprecated AI models to their replacements
875 455 * 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.
878 456 */
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 - */
888 457 function mxchat_migrate_deprecated_models() {
889 458 $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) {
459 +
460 + // Check if model is set and is the deprecated Claude 3.5 Sonnet
461 + if (isset($options['model']) && $options['model'] === 'claude-3-5-sonnet-20241022') {
462 + // Update to Claude 3.7 Sonnet (the replacement model)
463 + $options['model'] = 'claude-3-7-sonnet-20250219';
945 464 update_option('mxchat_options', $options);
465 +
466 + // Set a flag to show admin notice
946 467 update_option('mxchat_model_migrated_notice', true);
947 - update_option('mxchat_model_migration_message', $migration_message);
468 +
469 + //error_log('MxChat: Migrated deprecated Claude 3.5 Sonnet to Claude 3.7 Sonnet');
948 470 }
949 471 }
950 472
951 473 /**
@@ -952,19 +474,17 @@
952 474 * Show admin notice after model migration
953 475 */
954 476 function mxchat_show_migration_notice() {
955 477 if (get_option('mxchat_model_migrated_notice')) {
956 - $migration_message = get_option('mxchat_model_migration_message', __('Your chatbot model has been automatically updated due to a model deprecation.', 'mxchat'));
957 478 ?>
958 479 <div class="notice notice-info is-dismissible">
959 480 <p>
960 481 <strong><?php esc_html_e('MxChat Model Updated', 'mxchat'); ?></strong><br>
961 - <?php echo esc_html($migration_message); ?>
482 + <?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'); ?>
962 483 </p>
963 484 </div>
964 485 <?php
965 486 delete_option('mxchat_model_migrated_notice');
966 - delete_option('mxchat_model_migration_message');
967 487 }
968 488 }
969 489
970 490 function mxchat_activate() {
@@ -1004,26 +524,13 @@
1004 524 enabled_bots LONGTEXT DEFAULT NULL,
1005 525 PRIMARY KEY (id)
1006 526 ) $charset_collate;";
1007 527
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 - ) $charset_collate;";
1019 -
1020 528 require_once ABSPATH . 'wp-admin/includes/upgrade.php';
1021 529
1022 530 // Create other tables
1023 531 dbDelta($sql_system_prompt);
1024 532 dbDelta($sql_intents_table);
1025 - dbDelta($sql_intent_phrases_table);
1026 533
1027 534 // Create URL click tracking table
1028 535 mxchat_create_url_clicks_table();
1029 536
@@ -1032,14 +539,8 @@
1032 539
1033 540 // NEW 2.5.2: Create queue processing tables
1034 541 mxchat_create_queue_tables();
1035 542
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 543 // Ensure additional columns in system prompt table
1043 544 $existing_system_columns = $wpdb->get_results("SHOW COLUMNS FROM $system_prompt_table");
1044 545 if (!empty($existing_system_columns)) {
1045 546 $existing_system_column_names = array_column($existing_system_columns, 'Field');
@@ -1082,11 +583,8 @@
1082 583
1083 584 // Run migration for existing installations
1084 585 mxchat_migrate_pinecone_roles_add_bot_id();
1085 586
1086 - // 3.2.4: Backfill active embedding model option (replaces 3.2.3 column-based tracking)
1087 - mxchat_backfill_active_embedding_model();
1088 -
1089 587 // Setup cron jobs
1090 588 mxchat_setup_cron_jobs();
1091 589
1092 590 // Update version
@@ -1121,14 +619,13 @@
1121 619 // Clear fallback flags if cron scheduling succeeded
1122 620 delete_option('mxchat_use_fallback_rate_limits');
1123 621 }
1124 622
1125 - // Schedule transcript cleanup if configured (bucket dropdown OR custom retention-days > 0)
623 + // Schedule transcript cleanup if configured
1126 624 $transcript_options = get_option('mxchat_transcripts_options', array());
1127 625 $cleanup_interval = isset($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' || $custom_retention > 0) {
626 +
627 + if ($cleanup_interval !== 'never') {
1131 628 // Check if not already scheduled
1132 629 if (!wp_next_scheduled('mxchat_cleanup_old_transcripts')) {
1133 630 // Schedule to run daily at 3 AM
1134 631 $next_run = strtotime('tomorrow 3:00 AM');
@@ -1205,14 +702,11 @@
1205 702
1206 703 // Version-specific migrations
1207 704 if ($current_version !== $plugin_version) {
1208 705 //error_log("MxChat: Version change detected: $current_version -> $plugin_version");
1209 -
706 +
1210 707 // Run live agent update BEFORE updating the stored version
1211 708 mxchat_handle_live_agent_update();
1212 -
1213 - // Run theme migration notice for 3.0.1 (AI theme CSS structure changes)
1214 - mxchat_handle_theme_migration_notice();
1215 709
1216 710 // Run role restriction migration for 2.4.1
1217 711 if (version_compare($current_version, '2.4.1', '<')) {
1218 712 mxchat_add_role_restriction_column();
@@ -1241,35 +735,8 @@
1241 735 mxchat_ensure_all_columns($chat_table);
1242 736 //error_log("MxChat: rag_context column migration for 2.6.0");
1243 737 }
1244 738
1245 - // 3.0.5: Migrate deprecated Gemini embedding model
1246 - if (version_compare($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 739 // Run full activation to ensure everything is up to date
1273 740 mxchat_activate();
1274 741
1275 742 // Run migration functions
@@ -1401,59 +868,31 @@
1401 868 function mxchat_handle_live_agent_update() {
1402 869 // Get the CURRENT stored version (before it gets updated)
1403 870 $current_version = get_option('mxchat_plugin_version', '0.0.0');
1404 871 $new_version = '2.2.2';
1405 -
872 +
1406 873 // Only run this once for the update to 2.2.2
1407 874 $update_handled = get_option('mxchat_live_agent_update_2_2_2_handled', false);
1408 -
875 +
1409 876 // Check if we're upgrading TO 2.2.2 and haven't handled this yet
1410 877 if (version_compare($current_version, $new_version, '<') && !$update_handled) {
1411 878 $options = get_option('mxchat_options', array());
1412 -
879 +
1413 880 // Check if live agent was previously enabled
1414 881 if (isset($options['live_agent_status']) && $options['live_agent_status'] === 'on') {
1415 882 // Disable live agent
1416 883 $options['live_agent_status'] = 'off';
1417 884 update_option('mxchat_options', $options);
1418 -
885 +
1419 886 // Set flag to show the notification banner
1420 887 update_option('mxchat_show_live_agent_disabled_notice', true);
1421 888 }
1422 -
889 +
1423 890 // Mark this update as handled
1424 891 update_option('mxchat_live_agent_update_2_2_2_handled', true);
1425 892 }
1426 893 }
1427 894
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 895 // Initialize plugin safely
1457 896 function mxchat_init() {
1458 897 // Include all class files first
1459 898 mxchat_include_classes();
@@ -1485,32 +924,10 @@
1485 924 // Initialize meta box class
1486 925 if (class_exists('MxChat_Meta_Box')) {
1487 926 new MxChat_Meta_Box();
1488 927 }
1489 -
1490 928 }
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 -
929 +
1513 930 // Initialize public classes
1514 931 if (class_exists('MxChat_Public')) {
1515 932 $mxchat_public = new MxChat_Public();
1516 933 }
@@ -1554,57 +971,10 @@
1554 971 $checked = true;
1555 972
1556 973 mxchat_migrate_pinecone_roles_add_bot_id();
1557 974 mxchat_migrate_add_content_type_column();
1558 - mxchat_migrate_add_translations_table();
1559 - mxchat_migrate_add_session_ratings_table();
1560 975 }
1561 976
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 977 // Register activation hook
1608 978 register_activation_hook(__FILE__, 'mxchat_activate');
1609 979
1610 980 // Add cron schedule
@@ -1616,67 +986,5 @@
1616 986 return $schedules;
1617 987 });
1618 988
1619 989 // 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');
990 +register_deactivation_hook(__FILE__, 'mxchat_deactivate');