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MxChat – AI Chatbot & Content Generation for WordPress / 3.1.2
MxChat – AI Chatbot & Content Generation for WordPress v3.1.2
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← All changes | mxchat-basic.php +1385 -1621 3.2.6 → 3.1.2 View file →
@@ -1,1621 +1,1385 @@
1 -<?php
2 -/**
3 - * Plugin Name: MxChat
4 - * Plugin URI: https://mxchat.ai/
5 - * Description: AI chatbot for WordPress with OpenAI, Claude, xAI, DeepSeek, live agent, PDF uploads, WooCommerce, and training on website data.
6 - * Version: 3.2.6
7 - * Author: MxChat
8 - * Author URI: https://mxchat.ai
9 - * License: GPLv2 or later
10 - * License URI: https://www.gnu.org/licenses/gpl-2.0.html
11 - * Text Domain: mxchat
12 - * Domain Path: /languages
13 - */
14 -
15 -if (!defined('ABSPATH')) {
16 - exit; // Exit if accessed directly.
17 -}
18 -
19 -
20 -if (!defined('MXCHAT_DEV_MODE')) {
21 - define('MXCHAT_DEV_MODE', false);
22 -}
23 -
24 -if (!defined('MXCHAT_VERSION')) {
25 - $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);
31 -}
32 -
33 -function mxchat_load_textdomain() {
34 - $domain = 'mxchat';
35 - $locale = determine_locale();
36 -
37 - // First, try to load from /wp-content/languages/plugins/ (preserved during updates)
38 - $mo_file = WP_LANG_DIR . '/plugins/' . $domain . '-' . $locale . '.mo';
39 - if (file_exists($mo_file)) {
40 - load_textdomain($domain, $mo_file);
41 - return;
42 - }
43 -
44 - // Fallback to plugin's /languages directory
45 - load_plugin_textdomain($domain, false, dirname(plugin_basename(__FILE__)) . '/languages');
46 -}
47 -add_action('init', 'mxchat_load_textdomain');
48 -
49 -/**
50 - * Exclude MxChat assets from caching plugin optimizations
51 - *
52 - * This prevents issues with WP Rocket, LiteSpeed Cache, Autoptimize, WP Super Cache,
53 - * W3 Total Cache, SG Optimizer, and similar plugins that may break the chatbot by
54 - * removing "unused" CSS, minifying/combining JS, or deferring/delaying jQuery.
55 - *
56 - * Both chat-script.js and floating-script.js depend on jQuery, so jQuery must also
57 - * be excluded from any optimization that changes load order or timing.
58 - */
59 -
60 -// ── WP Rocket ────────────────────────────────────────────────────────────────
61 -
62 -// Exclude from Remove Unused CSS (RUCSS)
63 -add_filter('rocket_rucss_inline_atts_exclusions', function($exclusions) {
64 - if (!is_array($exclusions)) $exclusions = array();
65 - $exclusions[] = 'mxchat';
66 - return $exclusions;
67 -});
68 -
69 -// Exclude CSS from minification/combination
70 -add_filter('rocket_exclude_css', function($excluded) {
71 - if (!is_array($excluded)) $excluded = array();
72 - $excluded[] = '/plugins/mxchat-basic/css/chat-style.css';
73 - return $excluded;
74 -});
75 -
76 -// Exclude JS from minification/combination
77 -add_filter('rocket_exclude_js', function($excluded) {
78 - if (!is_array($excluded)) $excluded = array();
79 - $excluded[] = '/plugins/mxchat-basic/js/chat-script.js';
80 - $excluded[] = '/plugins/mxchat-basic/js/floating-script.js';
81 - $excluded[] = '/jquery-core';
82 - $excluded[] = '/jquery.min.js';
83 - $excluded[] = '/jquery.js';
84 - $excluded[] = '/jquery-migrate';
85 - return $excluded;
86 -});
87 -
88 -// Exclude JS from defer
89 -add_filter('rocket_exclude_defer_js', function($excluded) {
90 - if (!is_array($excluded)) $excluded = array();
91 - $excluded[] = '/plugins/mxchat-basic/js/chat-script.js';
92 - $excluded[] = '/plugins/mxchat-basic/js/floating-script.js';
93 - $excluded[] = '/jquery-core';
94 - $excluded[] = '/jquery.min.js';
95 - $excluded[] = '/jquery.js';
96 - $excluded[] = '/jquery-migrate';
97 - return $excluded;
98 -});
99 -
100 -// Exclude from delay JS execution
101 -add_filter('rocket_delay_js_exclusions', function($excluded) {
102 - if (!is_array($excluded)) $excluded = array();
103 - $excluded[] = 'mxchat';
104 - $excluded[] = 'chat-script';
105 - $excluded[] = 'floating-script';
106 - $excluded[] = '/jquery-core';
107 - $excluded[] = '/jquery.min.js';
108 - $excluded[] = '/jquery.js';
109 - $excluded[] = '/jquery-migrate';
110 - return $excluded;
111 -});
112 -
113 -// ── LiteSpeed Cache ──────────────────────────────────────────────────────────
114 -
115 -// Exclude CSS from optimization
116 -add_filter('litespeed_optimize_css_excludes', function($excluded) {
117 - if (!is_array($excluded)) $excluded = array();
118 - $excluded[] = 'chat-style.css';
119 - $excluded[] = 'mxchat';
120 - return $excluded;
121 -});
122 -
123 -// Exclude from UCSS (Unique CSS) - prevents LiteSpeed from stripping "unused" MxChat CSS
124 -add_filter('litespeed_ucss_whitelist', function($whitelist) {
125 - if (!is_array($whitelist)) $whitelist = array();
126 - $whitelist[] = '.mxchat-chatbot-wrapper';
127 - $whitelist[] = '.floating-chatbot';
128 - $whitelist[] = '.floating-chatbot-button';
129 - $whitelist[] = '.chatbot-top-bar';
130 - $whitelist[] = '.mxchat-chatbot';
131 - $whitelist[] = '.chat-container';
132 - $whitelist[] = '.chat-box';
133 - $whitelist[] = '.bot-message';
134 - $whitelist[] = '.input-container';
135 - $whitelist[] = '.chat-input';
136 - $whitelist[] = '.send-button';
137 - $whitelist[] = '.pre-chat-message';
138 - $whitelist[] = '.mxchat-popular-questions';
139 - $whitelist[] = '.chat-toolbar';
140 - $whitelist[] = '.exit-chat';
141 - $whitelist[] = '.email-blocker';
142 - return $whitelist;
143 -});
144 -
145 -// Exclude CSS from CCSS (Critical CSS) generation
146 -add_filter('litespeed_optm_ccss_exc', function($excluded) {
147 - if (!is_array($excluded)) $excluded = array();
148 - $excluded[] = 'chat-style.css';
149 - $excluded[] = 'mxchat';
150 - return $excluded;
151 -});
152 -
153 -// Exclude JS from defer
154 -add_filter('litespeed_optm_js_defer_exc', function($excluded) {
155 - if (!is_array($excluded)) $excluded = array();
156 - $excluded[] = 'chat-script.js';
157 - $excluded[] = 'floating-script.js';
158 - $excluded[] = 'mxchat';
159 - $excluded[] = 'jquery.min.js';
160 - $excluded[] = 'jquery.js';
161 - return $excluded;
162 -});
163 -
164 -// Exclude JS from combining
165 -add_filter('litespeed_optm_js_exc', function($excluded) {
166 - if (!is_array($excluded)) $excluded = array();
167 - $excluded[] = 'chat-script.js';
168 - $excluded[] = 'floating-script.js';
169 - $excluded[] = 'mxchat';
170 - $excluded[] = 'jquery.min.js';
171 - $excluded[] = 'jquery.js';
172 - return $excluded;
173 -});
174 -
175 -// Exclude JS from delayed execution
176 -add_filter('litespeed_optm_js_delay_exc', function($excluded) {
177 - if (!is_array($excluded)) $excluded = array();
178 - $excluded[] = 'chat-script.js';
179 - $excluded[] = 'floating-script.js';
180 - $excluded[] = 'mxchat';
181 - return $excluded;
182 -});
183 -
184 -// Exclude from Guest Mode optimization
185 -add_filter('litespeed_guest_optm_exc', function($excluded) {
186 - if (!is_array($excluded)) $excluded = array();
187 - $excluded[] = 'mxchat';
188 - $excluded[] = 'chat-style';
189 - $excluded[] = 'chat-script';
190 - $excluded[] = 'floating-script';
191 - return $excluded;
192 -});
193 -
194 -// ── Autoptimize ──────────────────────────────────────────────────────────────
195 -
196 -// Exclude CSS from optimization (comma-separated strings)
197 -add_filter('autoptimize_filter_css_exclude', function($excluded) {
198 - if (!is_string($excluded)) $excluded = '';
199 - return $excluded . ', mxchat, chat-style.css';
200 -});
201 -
202 -// Exclude JS from optimization (comma-separated strings)
203 -add_filter('autoptimize_filter_js_exclude', function($excluded) {
204 - if (!is_string($excluded)) $excluded = '';
205 - return $excluded . ', mxchat, chat-script.js, floating-script.js, jquery.min.js, jquery.js';
206 -});
207 -
208 -// ── SG Optimizer (SiteGround) ────────────────────────────────────────────────
209 -
210 -add_filter('sgo_js_minify_exclude', function($excluded) {
211 - if (!is_array($excluded)) $excluded = array();
212 - $excluded[] = 'chat-script.js';
213 - $excluded[] = 'floating-script.js';
214 - $excluded[] = 'jquery.min.js';
215 - return $excluded;
216 -});
217 -
218 -add_filter('sgo_javascript_combine_exclude', function($excluded) {
219 - if (!is_array($excluded)) $excluded = array();
220 - $excluded[] = 'chat-script.js';
221 - $excluded[] = 'floating-script.js';
222 - $excluded[] = 'jquery.min.js';
223 - return $excluded;
224 -});
225 -
226 -add_filter('sgo_js_async_exclude', function($excluded) {
227 - if (!is_array($excluded)) $excluded = array();
228 - $excluded[] = 'chat-script.js';
229 - $excluded[] = 'floating-script.js';
230 - $excluded[] = 'jquery.min.js';
231 - return $excluded;
232 -});
233 -
234 -// ── W3 Total Cache ───────────────────────────────────────────────────────────
235 -
236 -add_filter('w3tc_minify_js_do_tag_minification', function($do_minify, $script_tag, $file) {
237 - if (strpos($file, 'chat-script.js') !== false ||
238 - strpos($file, 'floating-script.js') !== false ||
239 - strpos($file, 'jquery.min.js') !== false ||
240 - strpos($file, 'jquery.js') !== false) {
241 - return false;
242 - }
243 - return $do_minify;
244 -}, 10, 3);
245 -
246 -// ── WP Super Cache ──────────────────────────────────────────────────────────
247 -
248 -add_filter('wpsc_rejected_uri', function($rejected) {
249 - if (!is_array($rejected)) $rejected = array();
250 - $rejected[] = 'wp-admin/admin-ajax.php';
251 - return $rejected;
252 -});
253 -
254 -// ── Page-cache bypass for chat AJAX (companion to the 3.2.6 nonce-race hotfix)
255 -// Each cache plugin gets its own filter export so that visitors hitting an
256 -// edge-cached page never receive cached chat-AJAX responses. The chat send /
257 -// stream send / file upload all POST to /wp-admin/admin-ajax.php with
258 -// `action=mxchat_*`. Without these exports, a cache plugin can stale a response
259 -// and break the per-session nonce flow on the first message.
260 -
261 -// WP Rocket — `rocket_cache_reject_uri` takes a flat array of regex strings.
262 -add_filter('rocket_cache_reject_uri', function($uris) {
263 - if (!is_array($uris)) $uris = array();
264 - $uris[] = '/wp-admin/admin-ajax\.php\?action=mxchat_.*';
265 - return $uris;
266 -});
267 -
268 -// LiteSpeed Cache — `litespeed_cache_no_cache_for_request` short-circuits
269 -// caching when the request matches our chat-AJAX pattern.
270 -add_filter('litespeed_cache_no_cache_for_request', function($no_cache) {
271 - if ($no_cache) return $no_cache;
272 - if (!empty($_SERVER['REQUEST_URI']) &&
273 - strpos($_SERVER['REQUEST_URI'], '/wp-admin/admin-ajax.php') !== false &&
274 - !empty($_REQUEST['action']) &&
275 - strpos((string) $_REQUEST['action'], 'mxchat_') === 0) {
276 - return true;
277 - }
278 - return $no_cache;
279 -});
280 -
281 -// W3 Total Cache — `w3tc_pgcache_request_skip_uri` flips page-cache off when
282 -// the URI matches.
283 -add_filter('w3tc_pgcache_request_skip_uri', function($skip) {
284 - if ($skip) return $skip;
285 - if (!empty($_SERVER['REQUEST_URI']) &&
286 - strpos($_SERVER['REQUEST_URI'], '/wp-admin/admin-ajax.php') !== false &&
287 - !empty($_REQUEST['action']) &&
288 - strpos((string) $_REQUEST['action'], 'mxchat_') === 0) {
289 - return true;
290 - }
291 - return $skip;
292 -});
293 -
294 -// FlyingPress — `flying_press_cacheable` takes a boolean and is run per
295 -// request. Same pattern as LiteSpeed / W3TC.
296 -add_filter('flying_press_cacheable', function($cacheable) {
297 - if (!$cacheable) return $cacheable;
298 - if (!empty($_SERVER['REQUEST_URI']) &&
299 - strpos($_SERVER['REQUEST_URI'], '/wp-admin/admin-ajax.php') !== false &&
300 - !empty($_REQUEST['action']) &&
301 - strpos((string) $_REQUEST['action'], 'mxchat_') === 0) {
302 - return false;
303 - }
304 - return $cacheable;
305 -});
306 -
307 -// Include classes with error handling
308 -function mxchat_include_classes() {
309 - $class_files = array(
310 - 'includes/class-mxchat-integrator.php',
311 - 'includes/class-mxchat-admin.php',
312 - 'includes/class-mxchat-public.php',
313 - 'includes/class-mxchat-utils.php',
314 - 'includes/class-mxchat-user.php',
315 - 'includes/class-mxchat-meta-box.php',
316 - 'includes/class-mxchat-chunker.php',
317 - 'includes/class-mxchat-word-handler.php',
318 - 'includes/class-mxchat-content-generator.php',
319 - 'includes/class-rest-api.php',
320 - 'admin/class-ajax-handler.php',
321 - 'admin/class-pinecone-manager.php',
322 - 'admin/class-knowledge-manager.php'
323 - );
324 -
325 - foreach ($class_files as $file) {
326 - $file_path = plugin_dir_path(__FILE__) . $file;
327 - if (file_exists($file_path)) {
328 - require_once $file_path;
329 - } else {
330 - //error_log('MxChat: Missing class file - ' . $file);
331 - }
332 - }
333 -
334 - // Admin pages that aren't classes (procedural include).
335 - if (is_admin()) {
336 - $admin_api_page = plugin_dir_path(__FILE__) . 'includes/admin-api-page.php';
337 - if (file_exists($admin_api_page)) {
338 - require_once $admin_api_page;
339 - }
340 - }
341 -}
342 -
343 -/**
344 - * Lazy-load the PDF parser library only when needed.
345 - * Avoids loading 44 files on every page request.
346 - */
347 -function mxchat_load_pdf_parser() {
348 - if (class_exists('\Smalot\PdfParser\Parser')) {
349 - return true;
350 - }
351 - $autoload_path = plugin_dir_path(__FILE__) . 'includes/pdf-parser/alt_autoload.php';
352 - if (file_exists($autoload_path)) {
353 - require_once $autoload_path;
354 - return true;
355 - }
356 - return false;
357 -}
358 -
359 -/**
360 - * Create URL click tracking table
361 - */
362 -function mxchat_create_url_clicks_table() {
363 - global $wpdb;
364 -
365 - $table_name = $wpdb->prefix . 'mxchat_url_clicks';
366 -
367 - $charset_collate = $wpdb->get_charset_collate();
368 -
369 - $sql = "CREATE TABLE $table_name (
370 - id mediumint(9) NOT NULL AUTO_INCREMENT,
371 - session_id varchar(100) NOT NULL,
372 - clicked_url text NOT NULL,
373 - message_context text,
374 - click_timestamp datetime DEFAULT CURRENT_TIMESTAMP,
375 - user_ip varchar(45),
376 - user_agent text,
377 - PRIMARY KEY (id),
378 - KEY session_id (session_id),
379 - KEY click_timestamp (click_timestamp)
380 - ) $charset_collate;";
381 -
382 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
383 - dbDelta($sql);
384 -}
385 -
386 -/**
387 - * FIXED: Robust table creation and column management
388 - */
389 -function mxchat_create_chat_transcripts_table() {
390 - global $wpdb;
391 -
392 - $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
393 - $charset_collate = $wpdb->get_charset_collate();
394 -
395 - // Create table with ALL columns including user_name from the start
396 - $sql = "CREATE TABLE $table_name (
397 - id MEDIUMINT(9) NOT NULL AUTO_INCREMENT,
398 - user_id MEDIUMINT(9) DEFAULT 0,
399 - session_id VARCHAR(255) NOT NULL,
400 - role VARCHAR(255) NOT NULL,
401 - message TEXT NOT NULL,
402 - user_email VARCHAR(255) DEFAULT NULL,
403 - user_name VARCHAR(100) DEFAULT NULL,
404 - user_identifier VARCHAR(255) DEFAULT NULL,
405 - originating_page_url TEXT DEFAULT NULL,
406 - originating_page_title VARCHAR(500) DEFAULT NULL,
407 - timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
408 - PRIMARY KEY (id),
409 - KEY session_id (session_id),
410 - KEY user_email (user_email),
411 - KEY timestamp (timestamp)
412 - ) $charset_collate;";
413 -
414 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
415 - $result = dbDelta($sql);
416 -
417 - // Log the result for debugging
418 - if (empty($result)) {
419 - //error_log("MxChat: dbDelta returned empty result for chat transcripts table");
420 - } else {
421 - //error_log("MxChat: dbDelta result: " . print_r($result, true));
422 - }
423 -
424 - // IMPORTANT: Ensure all columns exist for existing installations
425 - mxchat_ensure_all_columns($table_name);
426 -}
427 -
428 -/**
429 - * Ensure all required columns exist (for upgrades)
430 - */
431 -function mxchat_ensure_all_columns($table_name) {
432 - global $wpdb;
433 -
434 - // First check if table exists
435 - $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
436 - if (!$table_exists) {
437 - //error_log("MxChat: Table $table_name does not exist, cannot add columns");
438 - return;
439 - }
440 -
441 - // Define all required columns and their types
442 - $required_columns = [
443 - 'user_identifier' => 'VARCHAR(255) DEFAULT NULL',
444 - 'user_email' => 'VARCHAR(255) DEFAULT NULL',
445 - 'user_name' => 'VARCHAR(100) DEFAULT NULL',
446 - 'originating_page_url' => 'TEXT DEFAULT NULL',
447 - 'originating_page_title' => 'VARCHAR(500) DEFAULT NULL',
448 - 'rag_context' => 'LONGTEXT DEFAULT NULL'
449 - ];
450 -
451 - // Get existing columns
452 - $existing_columns = $wpdb->get_results("SHOW COLUMNS FROM $table_name");
453 - if (empty($existing_columns)) {
454 - //error_log("MxChat: Could not get columns for table $table_name");
455 - return;
456 - }
457 -
458 - $existing_column_names = array_column($existing_columns, 'Field');
459 -
460 - // Add missing columns
461 - foreach ($required_columns as $column_name => $column_definition) {
462 - if (!in_array($column_name, $existing_column_names)) {
463 - $alter_sql = "ALTER TABLE $table_name ADD COLUMN $column_name $column_definition";
464 - $result = $wpdb->query($alter_sql);
465 -
466 - if ($result === false) {
467 - //error_log("MxChat: Failed to add column $column_name to $table_name. Error: " . $wpdb->last_error);
468 - } else {
469 - //error_log("MxChat: Successfully added column $column_name to $table_name");
470 - }
471 - }
472 - }
473 -}
474 -
475 -/**
476 - * Add role restriction column to knowledge base table
477 - */
478 -function mxchat_add_role_restriction_column() {
479 - global $wpdb;
480 - $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
481 -
482 - // Check if table exists first
483 - $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
484 - if (!$table_exists) {
485 - //error_log("MxChat: System prompt content table does not exist, cannot add role_restriction column");
486 - return;
487 - }
488 -
489 - // Check if column already exists
490 - $column_exists = $wpdb->get_results(
491 - $wpdb->prepare(
492 - "SHOW COLUMNS FROM {$table_name} LIKE %s",
493 - 'role_restriction'
494 - )
495 - );
496 -
497 - if (empty($column_exists)) {
498 - $alter_sql = "ALTER TABLE {$table_name} ADD COLUMN role_restriction VARCHAR(50) DEFAULT 'public' AFTER source_url";
499 - $result = $wpdb->query($alter_sql);
500 -
501 - if ($result === false) {
502 - //error_log("MxChat: Failed to add role_restriction column. Error: " . $wpdb->last_error);
503 - } else {
504 - //error_log("MxChat: Successfully added role_restriction column");
505 -
506 - // Set all existing records to 'public' (everyone can access)
507 - $update_result = $wpdb->query(
508 - "UPDATE {$table_name}
509 - SET role_restriction = 'public'
510 - WHERE role_restriction IS NULL OR role_restriction = ''"
511 - );
512 -
513 - if ($update_result !== false) {
514 - //error_log("MxChat: Updated {$update_result} existing records to public access");
515 - }
516 - }
517 - }
518 -}
519 -
520 -/**
521 - * Add enabled_bots column to intents table for multi-bot action filtering
522 - */
523 -function mxchat_add_enabled_bots_column() {
524 - global $wpdb;
525 - $table_name = $wpdb->prefix . 'mxchat_intents';
526 -
527 - // Check if table exists first
528 - $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
529 - if (!$table_exists) {
530 - //error_log("MxChat: Intents table does not exist, cannot add enabled_bots column");
531 - return;
532 - }
533 -
534 - // Check if column already exists
535 - $column_exists = $wpdb->get_results(
536 - $wpdb->prepare(
537 - "SHOW COLUMNS FROM {$table_name} LIKE %s",
538 - 'enabled_bots'
539 - )
540 - );
541 -
542 - if (empty($column_exists)) {
543 - $alter_sql = "ALTER TABLE {$table_name} ADD COLUMN enabled_bots LONGTEXT DEFAULT NULL AFTER enabled";
544 - $result = $wpdb->query($alter_sql);
545 -
546 - if ($result === false) {
547 - //error_log("MxChat: Failed to add enabled_bots column. Error: " . $wpdb->last_error);
548 - } else {
549 - //error_log("MxChat: Successfully added enabled_bots column");
550 -
551 - // Set all existing actions to work with 'default' bot for backward compatibility
552 - $default_bots = json_encode(['default']);
553 - $update_result = $wpdb->query(
554 - $wpdb->prepare(
555 - "UPDATE {$table_name}
556 - SET enabled_bots = %s
557 - WHERE enabled_bots IS NULL OR enabled_bots = ''",
558 - $default_bots
559 - )
560 - );
561 -
562 - if ($update_result !== false) {
563 - //error_log("MxChat: Updated {$update_result} existing actions to work with default bot");
564 - }
565 - }
566 - }
567 -}
568 -
569 -/**
570 - * Create Pinecone role restrictions table with multi-bot support
571 - */
572 -function mxchat_create_pinecone_roles_table() {
573 - global $wpdb;
574 -
575 - $table_name = $wpdb->prefix . 'mxchat_pinecone_roles';
576 - $charset_collate = $wpdb->get_charset_collate();
577 -
578 - $sql = "CREATE TABLE $table_name (
579 - id mediumint(9) NOT NULL AUTO_INCREMENT,
580 - vector_id varchar(255) NOT NULL,
581 - bot_id varchar(50) NOT NULL DEFAULT 'default',
582 - source_url text,
583 - role_restriction varchar(50) DEFAULT 'public',
584 - updated_at timestamp DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
585 - PRIMARY KEY (id),
586 - UNIQUE KEY vector_bot (vector_id, bot_id),
587 - KEY role_restriction (role_restriction),
588 - KEY bot_id (bot_id)
589 - ) $charset_collate;";
590 -
591 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
592 - dbDelta($sql);
593 -}
594 -
595 -/**
596 - * Add bot_id column to mxchat_pinecone_roles table for multi-bot support
597 - * This migration runs once to update existing installations
598 - */
599 -function mxchat_migrate_pinecone_roles_add_bot_id() {
600 - global $wpdb;
601 -
602 - // Check if migration already ran
603 - $migration_version = get_option('mxchat_pinecone_roles_migration_version', '0');
604 - if (version_compare($migration_version, '2.5.2', '>=')) {
605 - return; // Already migrated
606 - }
607 -
608 - $table_name = $wpdb->prefix . 'mxchat_pinecone_roles';
609 -
610 - // Check if table exists
611 - if ($wpdb->get_var("SHOW TABLES LIKE '{$table_name}'") != $table_name) {
612 - return; // Table doesn't exist yet
613 - }
614 -
615 - // Check if bot_id column already exists
616 - $column_exists = $wpdb->get_results("SHOW COLUMNS FROM {$table_name} LIKE 'bot_id'");
617 -
618 - if (empty($column_exists)) {
619 - // Add bot_id column
620 - $wpdb->query("ALTER TABLE {$table_name} ADD COLUMN bot_id VARCHAR(50) NOT NULL DEFAULT 'default' AFTER vector_id");
621 -
622 - // Update the unique key to include bot_id
623 - $wpdb->query("ALTER TABLE {$table_name} DROP INDEX vector_id");
624 - $wpdb->query("ALTER TABLE {$table_name} ADD UNIQUE KEY vector_bot (vector_id, bot_id)");
625 -
626 - // Add index for bot_id
627 - $wpdb->query("ALTER TABLE {$table_name} ADD KEY bot_id (bot_id)");
628 -
629 - //error_log('MxChat: Successfully added bot_id column to mxchat_pinecone_roles table');
630 - }
631 -
632 - // Mark migration as complete
633 - update_option('mxchat_pinecone_roles_migration_version', '2.5.2');
634 -}
635 -
636 -/**
637 - * 2.5.6: Add content_type column to mxchat_system_prompt_content table
638 - * Enables filtering knowledge base by content type (posts, pages, PDFs, etc.)
639 - */
640 -function mxchat_migrate_add_content_type_column() {
641 - global $wpdb;
642 -
643 - // Check if migration already ran
644 - $migration_version = get_option('mxchat_content_type_migration_version', '0');
645 - if (version_compare($migration_version, '2.5.6', '>=')) {
646 - return;
647 - }
648 -
649 - $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
650 -
651 - // Check if table exists
652 - if ($wpdb->get_var("SHOW TABLES LIKE '{$table_name}'") != $table_name) {
653 - return;
654 - }
655 -
656 - // Check if content_type column already exists
657 - $column_exists = $wpdb->get_results("SHOW COLUMNS FROM {$table_name} LIKE 'content_type'");
658 -
659 - if (empty($column_exists)) {
660 - // Add content_type column with default value 'content' for backwards compatibility
661 - $wpdb->query("ALTER TABLE {$table_name} ADD COLUMN content_type VARCHAR(50) DEFAULT 'content' AFTER role_restriction");
662 -
663 - // Add index for better query performance
664 - $wpdb->query("ALTER TABLE {$table_name} ADD KEY content_type (content_type)");
665 -
666 - //error_log('MxChat: Successfully added content_type column to mxchat_system_prompt_content table');
667 - }
668 -
669 - // Mark migration as complete
670 - update_option('mxchat_content_type_migration_version', '2.5.6');
671 -}
672 -
673 -/**
674 - * 3.2.4: Backfill the active embedding model option for installs that already
675 - * have KB content but no stamped model. The mismatch warning compares this
676 - * against the user's currently selected model — no per-row column needed.
677 - */
678 -function mxchat_backfill_active_embedding_model() {
679 - global $wpdb;
680 -
681 - if (get_option('mxchat_active_embedding_model', '') !== '') {
682 - return;
683 - }
684 -
685 - $kb_table = $wpdb->prefix . 'mxchat_system_prompt_content';
686 - if ($wpdb->get_var("SHOW TABLES LIKE '{$kb_table}'") !== $kb_table) {
687 - return;
688 - }
689 -
690 - $kb_count = (int) $wpdb->get_var("SELECT COUNT(*) FROM {$kb_table}");
691 - if ($kb_count > 0) {
692 - $options = get_option('mxchat_options', array());
693 - $current_model = $options['embedding_model'] ?? 'text-embedding-ada-002';
694 - update_option('mxchat_active_embedding_model', $current_model, false);
695 - }
696 -}
697 -
698 -/**
699 - * 2.5.2: Create queue processing tables for reliable background processing
700 - */
701 -function mxchat_create_queue_tables() {
702 - global $wpdb;
703 - $charset_collate = $wpdb->get_charset_collate();
704 -
705 - // Main queue table
706 - $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
707 - $sql_queue = "CREATE TABLE $queue_table (
708 - id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
709 - queue_id varchar(64) NOT NULL,
710 - item_type varchar(20) NOT NULL,
711 - item_data longtext NOT NULL,
712 - status varchar(20) NOT NULL DEFAULT 'pending',
713 - bot_id varchar(50) NOT NULL DEFAULT 'default',
714 - priority int(11) NOT NULL DEFAULT 0,
715 - attempts int(11) NOT NULL DEFAULT 0,
716 - max_attempts int(11) NOT NULL DEFAULT 3,
717 - error_message text DEFAULT NULL,
718 - created_at datetime NOT NULL,
719 - started_at datetime DEFAULT NULL,
720 - completed_at datetime DEFAULT NULL,
721 - PRIMARY KEY (id),
722 - KEY queue_id (queue_id),
723 - KEY status (status),
724 - KEY item_type (item_type),
725 - KEY priority (priority)
726 - ) $charset_collate;";
727 -
728 - // Queue metadata table
729 - $meta_table = $wpdb->prefix . 'mxchat_queue_meta';
730 - $sql_meta = "CREATE TABLE $meta_table (
731 - id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
732 - queue_id varchar(64) NOT NULL,
733 - meta_key varchar(255) NOT NULL,
734 - meta_value longtext,
735 - PRIMARY KEY (id),
736 - KEY queue_id (queue_id),
737 - KEY meta_key (meta_key)
738 - ) $charset_collate;";
739 -
740 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
741 - dbDelta($sql_queue);
742 - dbDelta($sql_meta);
743 -
744 - //error_log("MxChat: Queue tables created/updated successfully");
745 -}
746 -
747 -/**
748 - * Create transcript translations table for persisting translations
749 - */
750 -function mxchat_create_translations_table() {
751 - global $wpdb;
752 - $charset_collate = $wpdb->get_charset_collate();
753 -
754 - $table_name = $wpdb->prefix . 'mxchat_transcript_translations';
755 - $sql = "CREATE TABLE $table_name (
756 - id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
757 - session_id varchar(255) NOT NULL,
758 - language_code varchar(10) NOT NULL,
759 - translations longtext NOT NULL,
760 - created_at datetime NOT NULL,
761 - updated_at datetime NOT NULL,
762 - PRIMARY KEY (id),
763 - UNIQUE KEY session_lang (session_id, language_code),
764 - KEY session_id (session_id)
765 - ) $charset_collate;";
766 -
767 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
768 - dbDelta($sql);
769 -}
770 -
771 -/**
772 - * Create per-session satisfaction ratings table (v3.2.6)
773 - * Stores one 👍/👎 rating + optional feedback per chat session.
774 - */
775 -function mxchat_create_session_ratings_table() {
776 - global $wpdb;
777 - $charset_collate = $wpdb->get_charset_collate();
778 -
779 - $table_name = $wpdb->prefix . 'mxchat_session_ratings';
780 - $sql = "CREATE TABLE $table_name (
781 - id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
782 - session_id varchar(255) NOT NULL,
783 - bot_id varchar(50) NOT NULL DEFAULT 'default',
784 - rating_value tinyint(1) NOT NULL,
785 - rating_feedback text DEFAULT NULL,
786 - created_at datetime NOT NULL,
787 - PRIMARY KEY (id),
788 - UNIQUE KEY session_id (session_id),
789 - KEY bot_id (bot_id),
790 - KEY created_at (created_at)
791 - ) $charset_collate;";
792 -
793 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
794 - dbDelta($sql);
795 -}
796 -
797 -/**
798 - * 2.5.2: Fix URL column size to support long URLs (especially with UTF-8 encoding)
799 - * This fixes "url, source_url. The supplied values may be too long" errors
800 - */
801 -function mxchat_fix_url_column_size() {
802 - global $wpdb;
803 - $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
804 -
805 - // Check if table exists
806 - $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
807 - if (!$table_exists) {
808 - return;
809 - }
810 -
811 - // Change url and source_url from VARCHAR to TEXT to handle long URLs
812 - // This is especially important for URLs with UTF-8 encoded characters (Hebrew, Arabic, etc.)
813 - $wpdb->query("ALTER TABLE {$table_name} MODIFY COLUMN url TEXT");
814 - $wpdb->query("ALTER TABLE {$table_name} MODIFY COLUMN source_url TEXT");
815 -
816 - //error_log("MxChat: Successfully updated url and source_url columns to TEXT type for long URL support");
817 -}
818 -
819 -/**
820 - * Migrate deprecated AI models to their replacements
821 - * Version 2.5.1: Migrate Claude 3.5 Sonnet (deprecated) to Claude 3.7 Sonnet
822 - * Version 3.1.2: Convert chat transcripts table to utf8mb4 for emoji support
823 - * Without utf8mb4, any bot response containing emojis silently fails to insert.
824 - */
825 -function mxchat_migrate_transcripts_charset() {
826 - global $wpdb;
827 - $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
828 - $wpdb->query("ALTER TABLE $table_name CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci");
829 -}
830 -
831 -/**
832 - * Version 3.0.55: Migrate GPT-4 series models (deprecated 2026-02-17) to GPT-5 series
833 - */
834 -function mxchat_migrate_deprecated_models() {
835 - $options = get_option('mxchat_options', array());
836 - $migrated = false;
837 - $migration_message = '';
838 -
839 - if (!isset($options['model'])) {
840 - return;
841 - }
842 -
843 - $current_model = $options['model'];
844 -
845 - // Migrate deprecated Claude models to Claude Opus 4.6 (recommended replacement per Anthropic)
846 - $deprecated_claude_models = array(
847 - 'claude-3-5-sonnet-20240620', // Retired Oct 28, 2025
848 - 'claude-3-5-sonnet-20241022', // Retired Oct 28, 2025
849 - 'claude-3-7-sonnet-20250219', // Retiring Feb 19, 2026
850 - 'claude-3-opus-20240229', // Retired Jan 5, 2026
851 - 'claude-3-sonnet-20240229', // Legacy
852 - 'claude-3-haiku-20240307', // Legacy
853 - );
854 - if (in_array($current_model, $deprecated_claude_models, true)) {
855 - $options['model'] = 'claude-opus-4-6';
856 - $migrated = true;
857 - $migration_message = sprintf(
858 - 'Your chatbot model has been automatically updated from %s to Claude Opus 4.6 due to Anthropic deprecating older Claude models.',
859 - $current_model
860 - );
861 - }
862 -
863 - // Migrate deprecated Claude Haiku 3.5 to Claude Haiku 4.5
864 - if ($current_model === 'claude-3-5-haiku-20241022') {
865 - $options['model'] = 'claude-haiku-4-5-20251001';
866 - $migrated = true;
867 - $migration_message = 'Your chatbot model has been automatically updated from Claude Haiku 3.5 to Claude Haiku 4.5 due to Anthropic deprecating the older model.';
868 - }
869 -
870 - // Migrate deprecated GPT-4 series and GPT-3.5 Turbo to GPT-5.1 Chat Latest
871 - if (in_array($current_model, array('gpt-4o', 'gpt-4.1-2025-04-14', 'gpt-4-turbo', 'gpt-4', 'gpt-3.5-turbo'), true)) {
872 - $options['model'] = 'gpt-5.1-chat-latest';
873 - $migrated = true;
874 - $migration_message = sprintf(
875 - 'Your chatbot model has been automatically updated from %s to GPT-5.1 Chat Latest due to OpenAI deprecating older models.',
876 - $current_model
877 - );
878 - }
879 -
880 - // Migrate deprecated GPT-4o Mini and GPT-4.1 Mini to GPT-5 Mini
881 - if (in_array($current_model, array('gpt-4o-mini', 'gpt-4.1-mini'), true)) {
882 - $options['model'] = 'gpt-5-mini';
883 - $migrated = true;
884 - $migration_message = sprintf(
885 - 'Your chatbot model has been automatically updated from %s to GPT-5 Mini due to OpenAI deprecating GPT-4 series models.',
886 - $current_model
887 - );
888 - }
889 -
890 - if ($migrated) {
891 - update_option('mxchat_options', $options);
892 - update_option('mxchat_model_migrated_notice', true);
893 - update_option('mxchat_model_migration_message', $migration_message);
894 - }
895 -}
896 -
897 -/**
898 - * Show admin notice after model migration
899 - */
900 -function mxchat_show_migration_notice() {
901 - if (get_option('mxchat_model_migrated_notice')) {
902 - $migration_message = get_option('mxchat_model_migration_message', __('Your chatbot model has been automatically updated due to a model deprecation.', 'mxchat'));
903 - ?>
904 - <div class="notice notice-info is-dismissible">
905 - <p>
906 - <strong><?php esc_html_e('MxChat Model Updated', 'mxchat'); ?></strong><br>
907 - <?php echo esc_html($migration_message); ?>
908 - </p>
909 - </div>
910 - <?php
911 - delete_option('mxchat_model_migrated_notice');
912 - delete_option('mxchat_model_migration_message');
913 - }
914 -}
915 -
916 -function mxchat_activate() {
917 - global $wpdb;
918 - $charset_collate = $wpdb->get_charset_collate();
919 -
920 - //error_log("MxChat: Running activation function");
921 -
922 - // Create chat transcripts table with improved function
923 - mxchat_create_chat_transcripts_table();
924 -
925 - // System Prompt Content Table - UPDATED: Use TEXT for url and source_url columns
926 - $system_prompt_table = $wpdb->prefix . 'mxchat_system_prompt_content';
927 - $sql_system_prompt = "CREATE TABLE $system_prompt_table (
928 - id MEDIUMINT(9) NOT NULL AUTO_INCREMENT,
929 - url TEXT NOT NULL,
930 - article_content LONGTEXT NOT NULL,
931 - embedding_vector LONGTEXT,
932 - source_url TEXT DEFAULT NULL,
933 - role_restriction VARCHAR(50) DEFAULT 'public',
934 - content_type VARCHAR(50) DEFAULT 'content',
935 - timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
936 - PRIMARY KEY (id),
937 - KEY content_type (content_type)
938 - ) $charset_collate;";
939 -
940 - // Intents Table - NOW INCLUDES enabled_bots column from the start
941 - $intents_table = $wpdb->prefix . 'mxchat_intents';
942 - $sql_intents_table = "CREATE TABLE $intents_table (
943 - id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
944 - intent_label VARCHAR(255) NOT NULL,
945 - phrases TEXT NOT NULL,
946 - embedding_vector LONGTEXT NOT NULL,
947 - callback_function VARCHAR(255) NOT NULL,
948 - similarity_threshold FLOAT DEFAULT 0.85,
949 - enabled TINYINT(1) NOT NULL DEFAULT 1,
950 - enabled_bots LONGTEXT DEFAULT NULL,
951 - PRIMARY KEY (id)
952 - ) $charset_collate;";
953 -
954 - // Individual Intent Phrases Table - each phrase gets its own embedding vector
955 - $intent_phrases_table = $wpdb->prefix . 'mxchat_intent_phrases';
956 - $sql_intent_phrases_table = "CREATE TABLE $intent_phrases_table (
957 - id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
958 - intent_id BIGINT(20) UNSIGNED NOT NULL,
959 - phrase TEXT NOT NULL,
960 - embedding_vector LONGTEXT NOT NULL,
961 - created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
962 - PRIMARY KEY (id),
963 - KEY intent_id (intent_id)
964 - ) $charset_collate;";
965 -
966 - require_once ABSPATH . 'wp-admin/includes/upgrade.php';
967 -
968 - // Create other tables
969 - dbDelta($sql_system_prompt);
970 - dbDelta($sql_intents_table);
971 - dbDelta($sql_intent_phrases_table);
972 -
973 - // Create URL click tracking table
974 - mxchat_create_url_clicks_table();
975 -
976 - // Create Pinecone roles table
977 - mxchat_create_pinecone_roles_table();
978 -
979 - // NEW 2.5.2: Create queue processing tables
980 - mxchat_create_queue_tables();
981 -
982 - // Create transcript translations table
983 - mxchat_create_translations_table();
984 -
985 - // Create per-session satisfaction ratings table (v3.2.6)
986 - mxchat_create_session_ratings_table();
987 -
988 - // Ensure additional columns in system prompt table
989 - $existing_system_columns = $wpdb->get_results("SHOW COLUMNS FROM $system_prompt_table");
990 - if (!empty($existing_system_columns)) {
991 - $existing_system_column_names = array_column($existing_system_columns, 'Field');
992 -
993 - if (!in_array('embedding_vector', $existing_system_column_names)) {
994 - $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN embedding_vector LONGTEXT");
995 - }
996 - if (!in_array('source_url', $existing_system_column_names)) {
997 - $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN source_url TEXT DEFAULT NULL");
998 - }
999 - if (!in_array('role_restriction', $existing_system_column_names)) {
1000 - $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN role_restriction VARCHAR(50) DEFAULT 'public' AFTER source_url");
1001 - }
1002 - }
1003 -
1004 - // Set default thresholds for existing intents
1005 - $wpdb->query("UPDATE {$intents_table} SET similarity_threshold = 0.85 WHERE similarity_threshold IS NULL");
1006 -
1007 - // Ensure enabled column exists in intents table
1008 - $existing_intent_columns = $wpdb->get_results("SHOW COLUMNS FROM $intents_table");
1009 - if (!empty($existing_intent_columns)) {
1010 - $existing_intent_column_names = array_column($existing_intent_columns, 'Field');
1011 -
1012 - if (!in_array('enabled', $existing_intent_column_names)) {
1013 - $wpdb->query("ALTER TABLE $intents_table ADD COLUMN enabled TINYINT(1) NOT NULL DEFAULT 1");
1014 - }
1015 -
1016 - // Ensure enabled_bots column exists for existing installations
1017 - if (!in_array('enabled_bots', $existing_intent_column_names)) {
1018 - $wpdb->query("ALTER TABLE $intents_table ADD COLUMN enabled_bots LONGTEXT DEFAULT NULL AFTER enabled");
1019 -
1020 - // Set existing actions to work with default bot
1021 - $default_bots = json_encode(['default']);
1022 - $wpdb->query($wpdb->prepare(
1023 - "UPDATE {$intents_table} SET enabled_bots = %s WHERE enabled_bots IS NULL",
1024 - $default_bots
1025 - ));
1026 - }
1027 - }
1028 -
1029 - // Run migration for existing installations
1030 - mxchat_migrate_pinecone_roles_add_bot_id();
1031 -
1032 - // 3.2.4: Backfill active embedding model option (replaces 3.2.3 column-based tracking)
1033 - mxchat_backfill_active_embedding_model();
1034 -
1035 - // Setup cron jobs
1036 - mxchat_setup_cron_jobs();
1037 -
1038 - // Update version
1039 - update_option('mxchat_plugin_version', MXCHAT_VERSION);
1040 -
1041 - //error_log("MxChat: Activation function completed");
1042 -}
1043 -
1044 -/**
1045 - * Setup cron jobs on plugin activation
1046 - */
1047 -function mxchat_setup_cron_jobs() {
1048 - // Clear any existing cron jobs first
1049 - wp_clear_scheduled_hook('mxchat_reset_rate_limits');
1050 -
1051 - // Check if WordPress cron is disabled
1052 - if (defined('DISABLE_WP_CRON') && DISABLE_WP_CRON) {
1053 - // Set flag to use fallback system
1054 - update_option('mxchat_use_fallback_rate_limits', true);
1055 - update_option('mxchat_next_rate_limit_check', time() + 3600);
1056 - return;
1057 - }
1058 -
1059 - // Schedule the rate limit reset cron job
1060 - $result = wp_schedule_event(time() + 300, 'hourly', 'mxchat_reset_rate_limits');
1061 -
1062 - if ($result === false) {
1063 - // Fallback if scheduling fails
1064 - update_option('mxchat_use_fallback_rate_limits', true);
1065 - update_option('mxchat_next_rate_limit_check', time() + 3600);
1066 - } else {
1067 - // Clear fallback flags if cron scheduling succeeded
1068 - delete_option('mxchat_use_fallback_rate_limits');
1069 - }
1070 -
1071 - // Schedule transcript cleanup if configured (bucket dropdown OR custom retention-days > 0)
1072 - $transcript_options = get_option('mxchat_transcripts_options', array());
1073 - $cleanup_interval = isset($transcript_options['mxchat_auto_delete_transcripts']) ? $transcript_options['mxchat_auto_delete_transcripts'] : 'never';
1074 - $custom_retention = isset($transcript_options['mxchat_retention_days']) ? (int) $transcript_options['mxchat_retention_days'] : 0;
1075 -
1076 - if ($cleanup_interval !== 'never' || $custom_retention > 0) {
1077 - // Check if not already scheduled
1078 - if (!wp_next_scheduled('mxchat_cleanup_old_transcripts')) {
1079 - // Schedule to run daily at 3 AM
1080 - $next_run = strtotime('tomorrow 3:00 AM');
1081 - wp_schedule_event($next_run, 'daily', 'mxchat_cleanup_old_transcripts');
1082 - }
1083 - }
1084 -}
1085 -
1086 -/**
1087 - * Clean up on plugin deactivation
1088 - */
1089 -function mxchat_deactivate() {
1090 - // Clear scheduled cron jobs
1091 - wp_clear_scheduled_hook('mxchat_reset_rate_limits');
1092 - wp_clear_scheduled_hook('mxchat_cleanup_old_transcripts');
1093 - wp_clear_scheduled_hook('mxchat_send_delayed_transcript');
1094 -
1095 - // Clear fallback options
1096 - delete_option('mxchat_use_fallback_rate_limits');
1097 - delete_option('mxchat_next_rate_limit_check');
1098 - delete_option('mxchat_fallback_check_interval');
1099 -
1100 - // NOTE: We do NOT delete queue tables on deactivation
1101 - // This preserves data if user accidentally deactivates the plugin
1102 -}
1103 -
1104 -/**
1105 - * Check if fallback rate limit cleanup is needed
1106 - */
1107 -function mxchat_check_fallback_rate_limits() {
1108 - $use_fallback = get_option('mxchat_use_fallback_rate_limits', false);
1109 -
1110 - if (!$use_fallback) {
1111 - return;
1112 - }
1113 -
1114 - $next_check = get_option('mxchat_next_rate_limit_check', 0);
1115 -
1116 - if (time() >= $next_check) {
1117 - // Only run reset if the MxChat_Integrator class exists
1118 - if (class_exists('MxChat_Integrator')) {
1119 - $integrator = new MxChat_Integrator();
1120 - if (method_exists($integrator, 'mxchat_reset_rate_limits')) {
1121 - $integrator->mxchat_reset_rate_limits();
1122 - update_option('mxchat_next_rate_limit_check', time() + 3600);
1123 - }
1124 - }
1125 - }
1126 -}
1127 -
1128 -/**
1129 - * Robust update checking with role restriction migration, model deprecation, and queue tables
1130 - * CRITICAL: This runs on EVERY page load to ensure tables exist
1131 - */
1132 -function mxchat_check_for_update() {
1133 - global $wpdb;
1134 -
1135 - try {
1136 - $current_version = get_option('mxchat_plugin_version', '0.0.0');
1137 - $plugin_version = MXCHAT_VERSION;
1138 -
1139 - // Always ensure critical tables exist (even if version matches)
1140 - // This handles manual table deletion or fresh installs
1141 - $chat_table = $wpdb->prefix . 'mxchat_chat_transcripts';
1142 - $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
1143 -
1144 - $chat_exists = $wpdb->get_var("SHOW TABLES LIKE '$chat_table'") === $chat_table;
1145 - $queue_exists = $wpdb->get_var("SHOW TABLES LIKE '$queue_table'") === $queue_table;
1146 -
1147 - if (!$chat_exists || !$queue_exists) {
1148 - //error_log("MxChat: Critical tables missing, running activation");
1149 - mxchat_activate();
1150 - }
1151 -
1152 - // Version-specific migrations
1153 - if ($current_version !== $plugin_version) {
1154 - //error_log("MxChat: Version change detected: $current_version -> $plugin_version");
1155 -
1156 - // Run live agent update BEFORE updating the stored version
1157 - mxchat_handle_live_agent_update();
1158 -
1159 - // Run theme migration notice for 3.0.1 (AI theme CSS structure changes)
1160 - mxchat_handle_theme_migration_notice();
1161 -
1162 - // Run role restriction migration for 2.4.1
1163 - if (version_compare($current_version, '2.4.1', '<')) {
1164 - mxchat_add_role_restriction_column();
1165 - }
1166 -
1167 - // Run enabled_bots column migration for 2.4.4
1168 - if (version_compare($current_version, '2.4.4', '<')) {
1169 - mxchat_add_enabled_bots_column();
1170 - }
1171 -
1172 - // Run model migration for 2.5.1 (Claude deprecation)
1173 - if (version_compare($current_version, '2.5.1', '<')) {
1174 - mxchat_migrate_deprecated_models();
1175 - }
1176 -
1177 - // 2.5.2: Ensure queue tables exist and fix URL column sizes for all users upgrading to 2.5.2
1178 - if (version_compare($current_version, '2.5.2', '<')) {
1179 - mxchat_create_queue_tables();
1180 - mxchat_fix_url_column_size(); // NEW: Fix URL column size for long URLs
1181 - //error_log("MxChat: Queue tables created and URL columns updated for upgrade to 2.5.2");
1182 - }
1183 -
1184 - // 2.6.0: Ensure rag_context column exists for retrieved documents feature
1185 - if (version_compare($current_version, '2.6.0', '<')) {
1186 - $chat_table = $wpdb->prefix . 'mxchat_chat_transcripts';
1187 - mxchat_ensure_all_columns($chat_table);
1188 - //error_log("MxChat: rag_context column migration for 2.6.0");
1189 - }
1190 -
1191 - // 3.0.5: Migrate deprecated Gemini embedding model
1192 - if (version_compare($current_version, '3.0.5', '<')) {
1193 - mxchat_migrate_gemini_embedding_model();
1194 - }
1195 -
1196 - // 3.0.6: Migrate deprecated OpenAI and Claude models
1197 - if (version_compare($current_version, '3.0.6', '<')) {
1198 - mxchat_migrate_deprecated_models();
1199 - }
1200 -
1201 - // 3.1.2: Convert chat transcripts table to utf8mb4 for emoji support
1202 - if (version_compare($current_version, '3.1.2', '<')) {
1203 - mxchat_migrate_transcripts_charset();
1204 - }
1205 -
1206 - // 3.1.7: Clean up stale shared session email/name entries
1207 - if (version_compare($current_version, '3.1.7', '<')) {
1208 - delete_option('mxchat_email_null');
1209 - delete_option('mxchat_name_null');
1210 - }
1211 -
1212 - // 3.2.4: Backfill active embedding model option for the warning UI
1213 - // (replaces the per-row column tracking from 3.2.3, which was reverted)
1214 - if (version_compare($current_version, '3.2.4', '<')) {
1215 - mxchat_backfill_active_embedding_model();
1216 - }
1217 -
1218 - // Run full activation to ensure everything is up to date
1219 - mxchat_activate();
1220 -
1221 - // Run migration functions
1222 - mxchat_migrate_live_agent_status();
1223 -
1224 - // Add the cleanup function for version 2.1.8
1225 - if (version_compare($current_version, '2.1.8', '<')) {
1226 - $deleted = mxchat_cleanup_orphaned_chat_history();
1227 - }
1228 -
1229 - // Update version LAST
1230 - update_option('mxchat_plugin_version', $plugin_version);
1231 -
1232 - //error_log("MxChat: Updated from version $current_version to $plugin_version");
1233 - }
1234 -
1235 - } catch (Exception $e) {
1236 - //error_log('MxChat update error: ' . $e->getMessage());
1237 - // Don't update version if there was an error
1238 - }
1239 -}
1240 -
1241 -/**
1242 - * Ensure tables exist on every admin load for fresh installations
1243 - * This is a safety net for cases where activation hook doesn't fire
1244 - */
1245 -function mxchat_ensure_tables_exist() {
1246 - global $wpdb;
1247 -
1248 - // Only run for admin users to avoid performance impact
1249 - if (!current_user_can('administrator')) {
1250 - return;
1251 - }
1252 -
1253 - // Check if we've already verified tables in this session
1254 - static $tables_checked = false;
1255 - if ($tables_checked) {
1256 - return;
1257 - }
1258 - $tables_checked = true;
1259 -
1260 - $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
1261 - $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
1262 -
1263 - $chat_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
1264 - $queue_exists = $wpdb->get_var("SHOW TABLES LIKE '$queue_table'") === $queue_table;
1265 -
1266 - if (!$chat_exists || !$queue_exists) {
1267 - //error_log("MxChat: Tables missing on admin load, running activation");
1268 - mxchat_activate();
1269 - }
1270 -}
1271 -
1272 -/**
1273 - * Clean up orphaned chat history options from the wp_options table
1274 - * @return int Number of options deleted
1275 - */
1276 -function mxchat_cleanup_orphaned_chat_history() {
1277 - global $wpdb;
1278 - $count = 0;
1279 -
1280 - // Get all option keys that match our pattern
1281 - $history_options = $wpdb->get_results(
1282 - "SELECT option_name FROM {$wpdb->options}
1283 - WHERE option_name LIKE 'mxchat_history_%'"
1284 - );
1285 -
1286 - if (!empty($history_options)) {
1287 - foreach ($history_options as $option) {
1288 - // Extract the session ID from the option name
1289 - $session_id = str_replace('mxchat_history_', '', $option->option_name);
1290 -
1291 - // Check if this session still exists in the custom table
1292 - $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
1293 - $exists = $wpdb->get_var(
1294 - $wpdb->prepare(
1295 - "SELECT COUNT(*) FROM {$table_name} WHERE session_id = %s",
1296 - $session_id
1297 - )
1298 - );
1299 -
1300 - // If session doesn't exist in the main table, delete the option
1301 - if ($exists == 0) {
1302 - delete_option($option->option_name);
1303 - // Also delete related metadata
1304 - delete_option("mxchat_email_{$session_id}");
1305 - delete_option("mxchat_name_{$session_id}");
1306 - delete_option("mxchat_agent_name_{$session_id}");
1307 - $count++;
1308 - }
1309 - }
1310 - }
1311 -
1312 - return $count;
1313 -}
1314 -
1315 -function mxchat_migrate_live_agent_status() {
1316 - $options = get_option('mxchat_options', []);
1317 -
1318 - // Check if live_agent_status exists
1319 - if (isset($options['live_agent_status'])) {
1320 - $current_status = $options['live_agent_status'];
1321 - $needs_update = false;
1322 -
1323 - // Convert to new format if needed
1324 - if ($current_status === 'online') {
1325 - $options['live_agent_status'] = 'on';
1326 - $needs_update = true;
1327 - } else if ($current_status === 'offline') {
1328 - $options['live_agent_status'] = 'off';
1329 - $needs_update = true;
1330 - } else if (!in_array($current_status, ['on', 'off'])) {
1331 - // Default to off for any unexpected values
1332 - $options['live_agent_status'] = 'off';
1333 - $needs_update = true;
1334 - }
1335 -
1336 - // Only update if needed
1337 - if ($needs_update) {
1338 - update_option('mxchat_options', $options);
1339 - }
1340 - } else {
1341 - // If status doesn't exist, set default to off
1342 - $options['live_agent_status'] = 'off';
1343 - update_option('mxchat_options', $options);
1344 - }
1345 -}
1346 -
1347 -function mxchat_handle_live_agent_update() {
1348 - // Get the CURRENT stored version (before it gets updated)
1349 - $current_version = get_option('mxchat_plugin_version', '0.0.0');
1350 - $new_version = '2.2.2';
1351 -
1352 - // Only run this once for the update to 2.2.2
1353 - $update_handled = get_option('mxchat_live_agent_update_2_2_2_handled', false);
1354 -
1355 - // Check if we're upgrading TO 2.2.2 and haven't handled this yet
1356 - if (version_compare($current_version, $new_version, '<') && !$update_handled) {
1357 - $options = get_option('mxchat_options', array());
1358 -
1359 - // Check if live agent was previously enabled
1360 - if (isset($options['live_agent_status']) && $options['live_agent_status'] === 'on') {
1361 - // Disable live agent
1362 - $options['live_agent_status'] = 'off';
1363 - update_option('mxchat_options', $options);
1364 -
1365 - // Set flag to show the notification banner
1366 - update_option('mxchat_show_live_agent_disabled_notice', true);
1367 - }
1368 -
1369 - // Mark this update as handled
1370 - update_option('mxchat_live_agent_update_2_2_2_handled', true);
1371 - }
1372 -}
1373 -
1374 -/**
1375 - * Handle theme migration notice for version 3.0.1
1376 - * Shows a dismissible notice to Pro users about migrating AI-generated themes
1377 - */
1378 -function mxchat_handle_theme_migration_notice() {
1379 - // Get the CURRENT stored version (before it gets updated)
1380 - $current_version = get_option('mxchat_plugin_version', '0.0.0');
1381 - $target_version = '3.0.1';
1382 -
1383 - // Only run this once for the update to 3.0.1
1384 - $update_handled = get_option('mxchat_theme_migration_update_3_0_1_handled', false);
1385 -
1386 - // Check if we're upgrading TO 3.0.1 and haven't handled this yet
1387 - if (version_compare($current_version, $target_version, '<') && !$update_handled) {
1388 - // Check if Pro is activated - only show to Pro users
1389 - $license_status = get_option('mxchat_license_status', 'inactive');
1390 - $is_pro = ($license_status === 'active');
1391 -
1392 - if ($is_pro) {
1393 - // Set flag to show the theme migration notification banner
1394 - update_option('mxchat_show_theme_migration_notice', true);
1395 - }
1396 -
1397 - // Mark this update as handled (whether Pro or not)
1398 - update_option('mxchat_theme_migration_update_3_0_1_handled', true);
1399 - }
1400 -}
1401 -
1402 -// Initialize plugin safely
1403 -function mxchat_init() {
1404 - // Include all class files first
1405 - mxchat_include_classes();
1406 -
1407 - // Run update check (this also ensures tables exist)
1408 - mxchat_check_for_update();
1409 -
1410 - // CRITICAL: Ensure tables exist on admin pages (safety net)
1411 - add_action('admin_init', 'mxchat_ensure_tables_exist', 1);
1412 -
1413 - // Add fallback rate limit check
1414 - add_action('init', 'mxchat_check_fallback_rate_limits', 5);
1415 -
1416 - // Add migration notice hook
1417 - add_action('admin_notices', 'mxchat_show_migration_notice');
1418 -
1419 - // Initialize classes with error handling
1420 - try {
1421 - // Initialize admin classes
1422 - if (is_admin()) {
1423 - if (class_exists('MxChat_Knowledge_Manager')) {
1424 - $mxchat_knowledge_manager = new MxChat_Knowledge_Manager();
1425 -
1426 - if (class_exists('MxChat_Admin')) {
1427 - $mxchat_admin = new MxChat_Admin($mxchat_knowledge_manager);
1428 - }
1429 - }
1430 -
1431 - // Initialize meta box class
1432 - if (class_exists('MxChat_Meta_Box')) {
1433 - new MxChat_Meta_Box();
1434 - }
1435 -
1436 - }
1437 -
1438 - // Initialize content generator globally — it registers wp_head hook
1439 - // for frontend CSS injection, plus wp_ajax_ hooks for admin.
1440 - if (class_exists('MxChat_Content_Generator')) {
1441 - new MxChat_Content_Generator();
1442 - }
1443 -
1444 - // Initialize REST API globally — endpoints must be registered on
1445 - // every request (admin and frontend) so they're reachable via /wp-json/.
1446 - // Endpoints are auth-gated and locked until the site owner generates
1447 - // a token in MxChat → API Access.
1448 - if (class_exists('MxChat_Rest_Api')) {
1449 - new MxChat_Rest_Api();
1450 - }
1451 -
1452 - // Initialize public classes
1453 - if (class_exists('MxChat_Public')) {
1454 - $mxchat_public = new MxChat_Public();
1455 - }
1456 -
1457 - if (class_exists('MxChat_Integrator')) {
1458 - global $mxchat_integrator;
1459 - $mxchat_integrator = new MxChat_Integrator();
1460 - }
1461 -
1462 - } catch (Exception $e) {
1463 - //error_log('MxChat initialization error: ' . $e->getMessage());
1464 -
1465 - // Show admin notice if there's an error
1466 - if (is_admin()) {
1467 - add_action('admin_notices', function() use ($e) {
1468 - echo '<div class="notice notice-error"><p>';
1469 - echo '<strong>MxChat Error:</strong> Plugin initialization failed. ';
1470 - echo 'Please check error logs or contact support. Error: ' . esc_html($e->getMessage());
1471 - echo '</p></div>';
1472 - });
1473 - }
1474 - }
1475 -}
1476 -
1477 -// Run initialization on plugins_loaded
1478 -add_action('plugins_loaded', 'mxchat_init');
1479 -
1480 -// Run migration check on admin init (for auto-updates without reactivation)
1481 -add_action('admin_init', 'mxchat_check_and_run_migrations');
1482 -
1483 -/**
1484 - * Check and run migrations on admin init
1485 - * This ensures migrations run even when plugin is auto-updated
1486 - */
1487 -function mxchat_check_and_run_migrations() {
1488 - // Only run in admin and not on every request
1489 - static $checked = false;
1490 - if ($checked) {
1491 - return;
1492 - }
1493 - $checked = true;
1494 -
1495 - mxchat_migrate_pinecone_roles_add_bot_id();
1496 - mxchat_migrate_add_content_type_column();
1497 - mxchat_migrate_add_translations_table();
1498 - mxchat_migrate_add_session_ratings_table();
1499 -}
1500 -
1501 -/**
1502 - * Migration: Create per-session satisfaction ratings table (v3.2.6)
1503 - * For users upgrading from versions before 3.2.6
1504 - */
1505 -function mxchat_migrate_add_session_ratings_table() {
1506 - $migration_key = 'mxchat_session_ratings_table_created';
1507 - if (get_option($migration_key)) {
1508 - return;
1509 - }
1510 - mxchat_create_session_ratings_table();
1511 - update_option($migration_key, '3.2.6');
1512 -}
1513 -
1514 -/**
1515 - * Migration: Create transcript translations table (v3.0.4)
1516 - * For users upgrading from versions before 3.0.4
1517 - */
1518 -function mxchat_migrate_add_translations_table() {
1519 - $migration_key = 'mxchat_translations_table_created';
1520 -
1521 - // Check if migration already ran
1522 - if (get_option($migration_key)) {
1523 - return;
1524 - }
1525 -
1526 - // Create the translations table
1527 - mxchat_create_translations_table();
1528 -
1529 - // Mark migration as complete
1530 - update_option($migration_key, '3.0.4');
1531 -}
1532 -
1533 -/**
1534 - * Migration: Update deprecated Gemini embedding model (v3.0.5)
1535 - * Updates gemini-embedding-exp-03-07 to gemini-embedding-001 for users who had it selected
1536 - */
1537 -function mxchat_migrate_gemini_embedding_model() {
1538 - $options = get_option('mxchat_options', array());
1539 -
1540 - if (isset($options['embedding_model']) && $options['embedding_model'] === 'gemini-embedding-exp-03-07') {
1541 - $options['embedding_model'] = 'gemini-embedding-001';
1542 - update_option('mxchat_options', $options);
1543 - }
1544 -}
1545 -
1546 -// Register activation hook
1547 -register_activation_hook(__FILE__, 'mxchat_activate');
1548 -
1549 -// Add cron schedule
1550 -add_filter('cron_schedules', function($schedules) {
1551 - $schedules['one_minute'] = array(
1552 - 'interval' => 60,
1553 - 'display' => 'Every Minute'
1554 - );
1555 - return $schedules;
1556 -});
1557 -
1558 -// Register deactivation hook
1559 -register_deactivation_hook(__FILE__, 'mxchat_deactivate');
1560 -
1561 -/**
1562 - * Per-session satisfaction rating: AJAX save handler (v3.2.6).
1563 - * Records one 👍/👎 + optional feedback per chat session. The UNIQUE KEY on
1564 - * session_id makes this naturally idempotent — only the first rating per
1565 - * session is stored; duplicate POSTs are silent no-ops.
1566 - */
1567 -function mxchat_save_session_rating() {
1568 - global $wpdb;
1569 -
1570 - $session_id = isset($_POST['session_id']) ? sanitize_text_field(wp_unslash($_POST['session_id'])) : '';
1571 - $bot_id = isset($_POST['bot_id']) ? sanitize_text_field(wp_unslash($_POST['bot_id'])) : 'default';
1572 - $rating_raw = isset($_POST['rating']) ? (int) $_POST['rating'] : 0;
1573 - $feedback = isset($_POST['feedback']) ? sanitize_textarea_field(wp_unslash($_POST['feedback'])) : '';
1574 -
1575 - if ($session_id === '' || ($rating_raw !== 1 && $rating_raw !== -1)) {
1576 - wp_send_json_error(array('message' => 'invalid_input'), 400);
1577 - }
1578 -
1579 - if (strlen($feedback) > 1000) {
1580 - $feedback = substr($feedback, 0, 1000);
1581 - }
1582 -
1583 - $table_name = $wpdb->prefix . 'mxchat_session_ratings';
1584 - $existing = $wpdb->get_var($wpdb->prepare(
1585 - "SELECT id FROM $table_name WHERE session_id = %s LIMIT 1",
1586 - $session_id
1587 - ));
1588 -
1589 - if ($existing) {
1590 - if ($feedback !== '') {
1591 - $wpdb->update(
1592 - $table_name,
1593 - array('rating_feedback' => $feedback),
1594 - array('id' => (int) $existing),
1595 - array('%s'),
1596 - array('%d')
1597 - );
1598 - }
1599 - wp_send_json_success(array('updated' => true));
1600 - }
1601 -
1602 - $inserted = $wpdb->insert(
1603 - $table_name,
1604 - array(
1605 - 'session_id' => $session_id,
1606 - 'bot_id' => $bot_id !== '' ? $bot_id : 'default',
1607 - 'rating_value' => $rating_raw,
1608 - 'rating_feedback' => $feedback !== '' ? $feedback : null,
1609 - 'created_at' => current_time('mysql'),
1610 - ),
1611 - array('%s', '%s', '%d', '%s', '%s')
1612 - );
1613 -
1614 - if ($inserted === false) {
1615 - wp_send_json_error(array('message' => 'db_insert_failed'), 500);
1616 - }
1617 -
1618 - wp_send_json_success(array('saved' => true));
1619 -}
1620 -add_action('wp_ajax_mxchat_save_rating', 'mxchat_save_session_rating');
1621 -add_action('wp_ajax_nopriv_mxchat_save_rating', 'mxchat_save_session_rating');
1 +<?php
2 +/**
3 + * Plugin Name: MxChat
4 + * Plugin URI: https://mxchat.ai/
5 + * Description: AI chatbot for WordPress with OpenAI, Claude, xAI, DeepSeek, live agent, PDF uploads, WooCommerce, and training on website data.
6 + * Version: 3.1.2
7 + * Author: MxChat
8 + * Author URI: https://mxchat.ai
9 + * License: GPLv2 or later
10 + * License URI: https://www.gnu.org/licenses/gpl-2.0.html
11 + * Text Domain: mxchat
12 + * Domain Path: /languages
13 + */
14 +
15 +if (!defined('ABSPATH')) {
16 + exit; // Exit if accessed directly.
17 +}
18 +
19 +// Define plugin version constant for asset versioning
20 +// Reads version from plugin header automatically
21 +if (!defined('MXCHAT_VERSION')) {
22 + $plugin_data = get_file_data(__FILE__, array('Version' => 'Version'), 'plugin');
23 + define('MXCHAT_VERSION', $plugin_data['Version']);
24 +}
25 +
26 +function mxchat_load_textdomain() {
27 + $domain = 'mxchat';
28 + $locale = determine_locale();
29 +
30 + // First, try to load from /wp-content/languages/plugins/ (preserved during updates)
31 + $mo_file = WP_LANG_DIR . '/plugins/' . $domain . '-' . $locale . '.mo';
32 + if (file_exists($mo_file)) {
33 + load_textdomain($domain, $mo_file);
34 + return;
35 + }
36 +
37 + // Fallback to plugin's /languages directory
38 + load_plugin_textdomain($domain, false, dirname(plugin_basename(__FILE__)) . '/languages');
39 +}
40 +add_action('init', 'mxchat_load_textdomain');
41 +
42 +/**
43 + * Exclude MxChat assets from caching plugin optimizations
44 + *
45 + * This prevents issues with WP Rocket, LiteSpeed Cache, Autoptimize, WP Super Cache,
46 + * W3 Total Cache, SG Optimizer, and similar plugins that may break the chatbot by
47 + * removing "unused" CSS, minifying/combining JS, or deferring/delaying jQuery.
48 + *
49 + * Both chat-script.js and floating-script.js depend on jQuery, so jQuery must also
50 + * be excluded from any optimization that changes load order or timing.
51 + */
52 +
53 +// ── WP Rocket ────────────────────────────────────────────────────────────────
54 +
55 +// Exclude from Remove Unused CSS (RUCSS)
56 +add_filter('rocket_rucss_inline_atts_exclusions', function($exclusions) {
57 + if (!is_array($exclusions)) $exclusions = array();
58 + $exclusions[] = 'mxchat';
59 + return $exclusions;
60 +});
61 +
62 +// Exclude CSS from minification/combination
63 +add_filter('rocket_exclude_css', function($excluded) {
64 + if (!is_array($excluded)) $excluded = array();
65 + $excluded[] = '/plugins/mxchat-basic/css/chat-style.css';
66 + return $excluded;
67 +});
68 +
69 +// Exclude JS from minification/combination
70 +add_filter('rocket_exclude_js', function($excluded) {
71 + if (!is_array($excluded)) $excluded = array();
72 + $excluded[] = '/plugins/mxchat-basic/js/chat-script.js';
73 + $excluded[] = '/plugins/mxchat-basic/js/floating-script.js';
74 + $excluded[] = '/jquery-core';
75 + $excluded[] = '/jquery.min.js';
76 + $excluded[] = '/jquery.js';
77 + $excluded[] = '/jquery-migrate';
78 + return $excluded;
79 +});
80 +
81 +// Exclude JS from defer
82 +add_filter('rocket_exclude_defer_js', function($excluded) {
83 + if (!is_array($excluded)) $excluded = array();
84 + $excluded[] = '/plugins/mxchat-basic/js/chat-script.js';
85 + $excluded[] = '/plugins/mxchat-basic/js/floating-script.js';
86 + $excluded[] = '/jquery-core';
87 + $excluded[] = '/jquery.min.js';
88 + $excluded[] = '/jquery.js';
89 + $excluded[] = '/jquery-migrate';
90 + return $excluded;
91 +});
92 +
93 +// Exclude from delay JS execution
94 +add_filter('rocket_delay_js_exclusions', function($excluded) {
95 + if (!is_array($excluded)) $excluded = array();
96 + $excluded[] = 'mxchat';
97 + $excluded[] = 'chat-script';
98 + $excluded[] = 'floating-script';
99 + $excluded[] = '/jquery-core';
100 + $excluded[] = '/jquery.min.js';
101 + $excluded[] = '/jquery.js';
102 + $excluded[] = '/jquery-migrate';
103 + return $excluded;
104 +});
105 +
106 +// ── LiteSpeed Cache ──────────────────────────────────────────────────────────
107 +
108 +// Exclude CSS from optimization
109 +add_filter('litespeed_optimize_css_excludes', function($excluded) {
110 + if (!is_array($excluded)) $excluded = array();
111 + $excluded[] = 'chat-style.css';
112 + $excluded[] = 'mxchat';
113 + return $excluded;
114 +});
115 +
116 +// Exclude from UCSS (Unique CSS) - prevents LiteSpeed from stripping "unused" MxChat CSS
117 +add_filter('litespeed_ucss_whitelist', function($whitelist) {
118 + if (!is_array($whitelist)) $whitelist = array();
119 + $whitelist[] = '.mxchat-chatbot-wrapper';
120 + $whitelist[] = '.floating-chatbot';
121 + $whitelist[] = '.floating-chatbot-button';
122 + $whitelist[] = '.chatbot-top-bar';
123 + $whitelist[] = '.mxchat-chatbot';
124 + $whitelist[] = '.chat-container';
125 + $whitelist[] = '.chat-box';
126 + $whitelist[] = '.bot-message';
127 + $whitelist[] = '.input-container';
128 + $whitelist[] = '.chat-input';
129 + $whitelist[] = '.send-button';
130 + $whitelist[] = '.pre-chat-message';
131 + $whitelist[] = '.mxchat-popular-questions';
132 + $whitelist[] = '.chat-toolbar';
133 + $whitelist[] = '.exit-chat';
134 + $whitelist[] = '.email-blocker';
135 + return $whitelist;
136 +});
137 +
138 +// Exclude CSS from CCSS (Critical CSS) generation
139 +add_filter('litespeed_optm_ccss_exc', function($excluded) {
140 + if (!is_array($excluded)) $excluded = array();
141 + $excluded[] = 'chat-style.css';
142 + $excluded[] = 'mxchat';
143 + return $excluded;
144 +});
145 +
146 +// Exclude JS from defer
147 +add_filter('litespeed_optm_js_defer_exc', function($excluded) {
148 + if (!is_array($excluded)) $excluded = array();
149 + $excluded[] = 'chat-script.js';
150 + $excluded[] = 'floating-script.js';
151 + $excluded[] = 'mxchat';
152 + $excluded[] = 'jquery.min.js';
153 + $excluded[] = 'jquery.js';
154 + return $excluded;
155 +});
156 +
157 +// Exclude JS from combining
158 +add_filter('litespeed_optm_js_exc', function($excluded) {
159 + if (!is_array($excluded)) $excluded = array();
160 + $excluded[] = 'chat-script.js';
161 + $excluded[] = 'floating-script.js';
162 + $excluded[] = 'mxchat';
163 + $excluded[] = 'jquery.min.js';
164 + $excluded[] = 'jquery.js';
165 + return $excluded;
166 +});
167 +
168 +// Exclude JS from delayed execution
169 +add_filter('litespeed_optm_js_delay_exc', function($excluded) {
170 + if (!is_array($excluded)) $excluded = array();
171 + $excluded[] = 'chat-script.js';
172 + $excluded[] = 'floating-script.js';
173 + $excluded[] = 'mxchat';
174 + return $excluded;
175 +});
176 +
177 +// Exclude from Guest Mode optimization
178 +add_filter('litespeed_guest_optm_exc', function($excluded) {
179 + if (!is_array($excluded)) $excluded = array();
180 + $excluded[] = 'mxchat';
181 + $excluded[] = 'chat-style';
182 + $excluded[] = 'chat-script';
183 + $excluded[] = 'floating-script';
184 + return $excluded;
185 +});
186 +
187 +// ── Autoptimize ──────────────────────────────────────────────────────────────
188 +
189 +// Exclude CSS from optimization (comma-separated strings)
190 +add_filter('autoptimize_filter_css_exclude', function($excluded) {
191 + if (!is_string($excluded)) $excluded = '';
192 + return $excluded . ', mxchat, chat-style.css';
193 +});
194 +
195 +// Exclude JS from optimization (comma-separated strings)
196 +add_filter('autoptimize_filter_js_exclude', function($excluded) {
197 + if (!is_string($excluded)) $excluded = '';
198 + return $excluded . ', mxchat, chat-script.js, floating-script.js, jquery.min.js, jquery.js';
199 +});
200 +
201 +// ── SG Optimizer (SiteGround) ────────────────────────────────────────────────
202 +
203 +add_filter('sgo_js_minify_exclude', function($excluded) {
204 + if (!is_array($excluded)) $excluded = array();
205 + $excluded[] = 'chat-script.js';
206 + $excluded[] = 'floating-script.js';
207 + $excluded[] = 'jquery.min.js';
208 + return $excluded;
209 +});
210 +
211 +add_filter('sgo_javascript_combine_exclude', function($excluded) {
212 + if (!is_array($excluded)) $excluded = array();
213 + $excluded[] = 'chat-script.js';
214 + $excluded[] = 'floating-script.js';
215 + $excluded[] = 'jquery.min.js';
216 + return $excluded;
217 +});
218 +
219 +add_filter('sgo_js_async_exclude', function($excluded) {
220 + if (!is_array($excluded)) $excluded = array();
221 + $excluded[] = 'chat-script.js';
222 + $excluded[] = 'floating-script.js';
223 + $excluded[] = 'jquery.min.js';
224 + return $excluded;
225 +});
226 +
227 +// ── W3 Total Cache ───────────────────────────────────────────────────────────
228 +
229 +add_filter('w3tc_minify_js_do_tag_minification', function($do_minify, $script_tag, $file) {
230 + if (strpos($file, 'chat-script.js') !== false ||
231 + strpos($file, 'floating-script.js') !== false ||
232 + strpos($file, 'jquery.min.js') !== false ||
233 + strpos($file, 'jquery.js') !== false) {
234 + return false;
235 + }
236 + return $do_minify;
237 +}, 10, 3);
238 +
239 +// ── WP Super Cache ──────────────────────────────────────────────────────────
240 +
241 +add_filter('wpsc_rejected_uri', function($rejected) {
242 + if (!is_array($rejected)) $rejected = array();
243 + $rejected[] = 'wp-admin/admin-ajax.php';
244 + return $rejected;
245 +});
246 +
247 +// Include classes with error handling
248 +function mxchat_include_classes() {
249 + $class_files = array(
250 + 'includes/class-mxchat-integrator.php',
251 + 'includes/class-mxchat-admin.php',
252 + 'includes/class-mxchat-public.php',
253 + 'includes/class-mxchat-utils.php',
254 + 'includes/class-mxchat-user.php',
255 + 'includes/class-mxchat-meta-box.php',
256 + 'includes/class-mxchat-chunker.php',
257 + 'includes/class-mxchat-word-handler.php',
258 + 'includes/class-mxchat-content-generator.php',
259 + 'admin/class-ajax-handler.php',
260 + 'admin/class-pinecone-manager.php',
261 + 'admin/class-knowledge-manager.php'
262 + );
263 +
264 + foreach ($class_files as $file) {
265 + $file_path = plugin_dir_path(__FILE__) . $file;
266 + if (file_exists($file_path)) {
267 + require_once $file_path;
268 + } else {
269 + //error_log('MxChat: Missing class file - ' . $file);
270 + }
271 + }
272 +}
273 +
274 +/**
275 + * Lazy-load the PDF parser library only when needed.
276 + * Avoids loading 44 files on every page request.
277 + */
278 +function mxchat_load_pdf_parser() {
279 + if (class_exists('\Smalot\PdfParser\Parser')) {
280 + return true;
281 + }
282 + $autoload_path = plugin_dir_path(__FILE__) . 'includes/pdf-parser/alt_autoload.php';
283 + if (file_exists($autoload_path)) {
284 + require_once $autoload_path;
285 + return true;
286 + }
287 + return false;
288 +}
289 +
290 +/**
291 + * Create URL click tracking table
292 + */
293 +function mxchat_create_url_clicks_table() {
294 + global $wpdb;
295 +
296 + $table_name = $wpdb->prefix . 'mxchat_url_clicks';
297 +
298 + $charset_collate = $wpdb->get_charset_collate();
299 +
300 + $sql = "CREATE TABLE $table_name (
301 + id mediumint(9) NOT NULL AUTO_INCREMENT,
302 + session_id varchar(100) NOT NULL,
303 + clicked_url text NOT NULL,
304 + message_context text,
305 + click_timestamp datetime DEFAULT CURRENT_TIMESTAMP,
306 + user_ip varchar(45),
307 + user_agent text,
308 + PRIMARY KEY (id),
309 + KEY session_id (session_id),
310 + KEY click_timestamp (click_timestamp)
311 + ) $charset_collate;";
312 +
313 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
314 + dbDelta($sql);
315 +}
316 +
317 +/**
318 + * FIXED: Robust table creation and column management
319 + */
320 +function mxchat_create_chat_transcripts_table() {
321 + global $wpdb;
322 +
323 + $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
324 + $charset_collate = $wpdb->get_charset_collate();
325 +
326 + // Create table with ALL columns including user_name from the start
327 + $sql = "CREATE TABLE $table_name (
328 + id MEDIUMINT(9) NOT NULL AUTO_INCREMENT,
329 + user_id MEDIUMINT(9) DEFAULT 0,
330 + session_id VARCHAR(255) NOT NULL,
331 + role VARCHAR(255) NOT NULL,
332 + message TEXT NOT NULL,
333 + user_email VARCHAR(255) DEFAULT NULL,
334 + user_name VARCHAR(100) DEFAULT NULL,
335 + user_identifier VARCHAR(255) DEFAULT NULL,
336 + originating_page_url TEXT DEFAULT NULL,
337 + originating_page_title VARCHAR(500) DEFAULT NULL,
338 + timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
339 + PRIMARY KEY (id),
340 + KEY session_id (session_id),
341 + KEY user_email (user_email),
342 + KEY timestamp (timestamp)
343 + ) $charset_collate;";
344 +
345 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
346 + $result = dbDelta($sql);
347 +
348 + // Log the result for debugging
349 + if (empty($result)) {
350 + //error_log("MxChat: dbDelta returned empty result for chat transcripts table");
351 + } else {
352 + //error_log("MxChat: dbDelta result: " . print_r($result, true));
353 + }
354 +
355 + // IMPORTANT: Ensure all columns exist for existing installations
356 + mxchat_ensure_all_columns($table_name);
357 +}
358 +
359 +/**
360 + * Ensure all required columns exist (for upgrades)
361 + */
362 +function mxchat_ensure_all_columns($table_name) {
363 + global $wpdb;
364 +
365 + // First check if table exists
366 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
367 + if (!$table_exists) {
368 + //error_log("MxChat: Table $table_name does not exist, cannot add columns");
369 + return;
370 + }
371 +
372 + // Define all required columns and their types
373 + $required_columns = [
374 + 'user_identifier' => 'VARCHAR(255) DEFAULT NULL',
375 + 'user_email' => 'VARCHAR(255) DEFAULT NULL',
376 + 'user_name' => 'VARCHAR(100) DEFAULT NULL',
377 + 'originating_page_url' => 'TEXT DEFAULT NULL',
378 + 'originating_page_title' => 'VARCHAR(500) DEFAULT NULL',
379 + 'rag_context' => 'LONGTEXT DEFAULT NULL'
380 + ];
381 +
382 + // Get existing columns
383 + $existing_columns = $wpdb->get_results("SHOW COLUMNS FROM $table_name");
384 + if (empty($existing_columns)) {
385 + //error_log("MxChat: Could not get columns for table $table_name");
386 + return;
387 + }
388 +
389 + $existing_column_names = array_column($existing_columns, 'Field');
390 +
391 + // Add missing columns
392 + foreach ($required_columns as $column_name => $column_definition) {
393 + if (!in_array($column_name, $existing_column_names)) {
394 + $alter_sql = "ALTER TABLE $table_name ADD COLUMN $column_name $column_definition";
395 + $result = $wpdb->query($alter_sql);
396 +
397 + if ($result === false) {
398 + //error_log("MxChat: Failed to add column $column_name to $table_name. Error: " . $wpdb->last_error);
399 + } else {
400 + //error_log("MxChat: Successfully added column $column_name to $table_name");
401 + }
402 + }
403 + }
404 +}
405 +
406 +/**
407 + * Add role restriction column to knowledge base table
408 + */
409 +function mxchat_add_role_restriction_column() {
410 + global $wpdb;
411 + $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
412 +
413 + // Check if table exists first
414 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
415 + if (!$table_exists) {
416 + //error_log("MxChat: System prompt content table does not exist, cannot add role_restriction column");
417 + return;
418 + }
419 +
420 + // Check if column already exists
421 + $column_exists = $wpdb->get_results(
422 + $wpdb->prepare(
423 + "SHOW COLUMNS FROM {$table_name} LIKE %s",
424 + 'role_restriction'
425 + )
426 + );
427 +
428 + if (empty($column_exists)) {
429 + $alter_sql = "ALTER TABLE {$table_name} ADD COLUMN role_restriction VARCHAR(50) DEFAULT 'public' AFTER source_url";
430 + $result = $wpdb->query($alter_sql);
431 +
432 + if ($result === false) {
433 + //error_log("MxChat: Failed to add role_restriction column. Error: " . $wpdb->last_error);
434 + } else {
435 + //error_log("MxChat: Successfully added role_restriction column");
436 +
437 + // Set all existing records to 'public' (everyone can access)
438 + $update_result = $wpdb->query(
439 + "UPDATE {$table_name}
440 + SET role_restriction = 'public'
441 + WHERE role_restriction IS NULL OR role_restriction = ''"
442 + );
443 +
444 + if ($update_result !== false) {
445 + //error_log("MxChat: Updated {$update_result} existing records to public access");
446 + }
447 + }
448 + }
449 +}
450 +
451 +/**
452 + * Add enabled_bots column to intents table for multi-bot action filtering
453 + */
454 +function mxchat_add_enabled_bots_column() {
455 + global $wpdb;
456 + $table_name = $wpdb->prefix . 'mxchat_intents';
457 +
458 + // Check if table exists first
459 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
460 + if (!$table_exists) {
461 + //error_log("MxChat: Intents table does not exist, cannot add enabled_bots column");
462 + return;
463 + }
464 +
465 + // Check if column already exists
466 + $column_exists = $wpdb->get_results(
467 + $wpdb->prepare(
468 + "SHOW COLUMNS FROM {$table_name} LIKE %s",
469 + 'enabled_bots'
470 + )
471 + );
472 +
473 + if (empty($column_exists)) {
474 + $alter_sql = "ALTER TABLE {$table_name} ADD COLUMN enabled_bots LONGTEXT DEFAULT NULL AFTER enabled";
475 + $result = $wpdb->query($alter_sql);
476 +
477 + if ($result === false) {
478 + //error_log("MxChat: Failed to add enabled_bots column. Error: " . $wpdb->last_error);
479 + } else {
480 + //error_log("MxChat: Successfully added enabled_bots column");
481 +
482 + // Set all existing actions to work with 'default' bot for backward compatibility
483 + $default_bots = json_encode(['default']);
484 + $update_result = $wpdb->query(
485 + $wpdb->prepare(
486 + "UPDATE {$table_name}
487 + SET enabled_bots = %s
488 + WHERE enabled_bots IS NULL OR enabled_bots = ''",
489 + $default_bots
490 + )
491 + );
492 +
493 + if ($update_result !== false) {
494 + //error_log("MxChat: Updated {$update_result} existing actions to work with default bot");
495 + }
496 + }
497 + }
498 +}
499 +
500 +/**
501 + * Create Pinecone role restrictions table with multi-bot support
502 + */
503 +function mxchat_create_pinecone_roles_table() {
504 + global $wpdb;
505 +
506 + $table_name = $wpdb->prefix . 'mxchat_pinecone_roles';
507 + $charset_collate = $wpdb->get_charset_collate();
508 +
509 + $sql = "CREATE TABLE $table_name (
510 + id mediumint(9) NOT NULL AUTO_INCREMENT,
511 + vector_id varchar(255) NOT NULL,
512 + bot_id varchar(50) NOT NULL DEFAULT 'default',
513 + source_url text,
514 + role_restriction varchar(50) DEFAULT 'public',
515 + updated_at timestamp DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
516 + PRIMARY KEY (id),
517 + UNIQUE KEY vector_bot (vector_id, bot_id),
518 + KEY role_restriction (role_restriction),
519 + KEY bot_id (bot_id)
520 + ) $charset_collate;";
521 +
522 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
523 + dbDelta($sql);
524 +}
525 +
526 +/**
527 + * Add bot_id column to mxchat_pinecone_roles table for multi-bot support
528 + * This migration runs once to update existing installations
529 + */
530 +function mxchat_migrate_pinecone_roles_add_bot_id() {
531 + global $wpdb;
532 +
533 + // Check if migration already ran
534 + $migration_version = get_option('mxchat_pinecone_roles_migration_version', '0');
535 + if (version_compare($migration_version, '2.5.2', '>=')) {
536 + return; // Already migrated
537 + }
538 +
539 + $table_name = $wpdb->prefix . 'mxchat_pinecone_roles';
540 +
541 + // Check if table exists
542 + if ($wpdb->get_var("SHOW TABLES LIKE '{$table_name}'") != $table_name) {
543 + return; // Table doesn't exist yet
544 + }
545 +
546 + // Check if bot_id column already exists
547 + $column_exists = $wpdb->get_results("SHOW COLUMNS FROM {$table_name} LIKE 'bot_id'");
548 +
549 + if (empty($column_exists)) {
550 + // Add bot_id column
551 + $wpdb->query("ALTER TABLE {$table_name} ADD COLUMN bot_id VARCHAR(50) NOT NULL DEFAULT 'default' AFTER vector_id");
552 +
553 + // Update the unique key to include bot_id
554 + $wpdb->query("ALTER TABLE {$table_name} DROP INDEX vector_id");
555 + $wpdb->query("ALTER TABLE {$table_name} ADD UNIQUE KEY vector_bot (vector_id, bot_id)");
556 +
557 + // Add index for bot_id
558 + $wpdb->query("ALTER TABLE {$table_name} ADD KEY bot_id (bot_id)");
559 +
560 + error_log('MxChat: Successfully added bot_id column to mxchat_pinecone_roles table');
561 + }
562 +
563 + // Mark migration as complete
564 + update_option('mxchat_pinecone_roles_migration_version', '2.5.2');
565 +}
566 +
567 +/**
568 + * 2.5.6: Add content_type column to mxchat_system_prompt_content table
569 + * Enables filtering knowledge base by content type (posts, pages, PDFs, etc.)
570 + */
571 +function mxchat_migrate_add_content_type_column() {
572 + global $wpdb;
573 +
574 + // Check if migration already ran
575 + $migration_version = get_option('mxchat_content_type_migration_version', '0');
576 + if (version_compare($migration_version, '2.5.6', '>=')) {
577 + return;
578 + }
579 +
580 + $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
581 +
582 + // Check if table exists
583 + if ($wpdb->get_var("SHOW TABLES LIKE '{$table_name}'") != $table_name) {
584 + return;
585 + }
586 +
587 + // Check if content_type column already exists
588 + $column_exists = $wpdb->get_results("SHOW COLUMNS FROM {$table_name} LIKE 'content_type'");
589 +
590 + if (empty($column_exists)) {
591 + // Add content_type column with default value 'content' for backwards compatibility
592 + $wpdb->query("ALTER TABLE {$table_name} ADD COLUMN content_type VARCHAR(50) DEFAULT 'content' AFTER role_restriction");
593 +
594 + // Add index for better query performance
595 + $wpdb->query("ALTER TABLE {$table_name} ADD KEY content_type (content_type)");
596 +
597 + error_log('MxChat: Successfully added content_type column to mxchat_system_prompt_content table');
598 + }
599 +
600 + // Mark migration as complete
601 + update_option('mxchat_content_type_migration_version', '2.5.6');
602 +}
603 +
604 +/**
605 + * 2.5.2: Create queue processing tables for reliable background processing
606 + */
607 +function mxchat_create_queue_tables() {
608 + global $wpdb;
609 + $charset_collate = $wpdb->get_charset_collate();
610 +
611 + // Main queue table
612 + $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
613 + $sql_queue = "CREATE TABLE $queue_table (
614 + id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
615 + queue_id varchar(64) NOT NULL,
616 + item_type varchar(20) NOT NULL,
617 + item_data longtext NOT NULL,
618 + status varchar(20) NOT NULL DEFAULT 'pending',
619 + bot_id varchar(50) NOT NULL DEFAULT 'default',
620 + priority int(11) NOT NULL DEFAULT 0,
621 + attempts int(11) NOT NULL DEFAULT 0,
622 + max_attempts int(11) NOT NULL DEFAULT 3,
623 + error_message text DEFAULT NULL,
624 + created_at datetime NOT NULL,
625 + started_at datetime DEFAULT NULL,
626 + completed_at datetime DEFAULT NULL,
627 + PRIMARY KEY (id),
628 + KEY queue_id (queue_id),
629 + KEY status (status),
630 + KEY item_type (item_type),
631 + KEY priority (priority)
632 + ) $charset_collate;";
633 +
634 + // Queue metadata table
635 + $meta_table = $wpdb->prefix . 'mxchat_queue_meta';
636 + $sql_meta = "CREATE TABLE $meta_table (
637 + id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
638 + queue_id varchar(64) NOT NULL,
639 + meta_key varchar(255) NOT NULL,
640 + meta_value longtext,
641 + PRIMARY KEY (id),
642 + KEY queue_id (queue_id),
643 + KEY meta_key (meta_key)
644 + ) $charset_collate;";
645 +
646 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
647 + dbDelta($sql_queue);
648 + dbDelta($sql_meta);
649 +
650 + //error_log("MxChat: Queue tables created/updated successfully");
651 +}
652 +
653 +/**
654 + * Create transcript translations table for persisting translations
655 + */
656 +function mxchat_create_translations_table() {
657 + global $wpdb;
658 + $charset_collate = $wpdb->get_charset_collate();
659 +
660 + $table_name = $wpdb->prefix . 'mxchat_transcript_translations';
661 + $sql = "CREATE TABLE $table_name (
662 + id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
663 + session_id varchar(255) NOT NULL,
664 + language_code varchar(10) NOT NULL,
665 + translations longtext NOT NULL,
666 + created_at datetime NOT NULL,
667 + updated_at datetime NOT NULL,
668 + PRIMARY KEY (id),
669 + UNIQUE KEY session_lang (session_id, language_code),
670 + KEY session_id (session_id)
671 + ) $charset_collate;";
672 +
673 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
674 + dbDelta($sql);
675 +}
676 +
677 +/**
678 + * 2.5.2: Fix URL column size to support long URLs (especially with UTF-8 encoding)
679 + * This fixes "url, source_url. The supplied values may be too long" errors
680 + */
681 +function mxchat_fix_url_column_size() {
682 + global $wpdb;
683 + $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
684 +
685 + // Check if table exists
686 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
687 + if (!$table_exists) {
688 + return;
689 + }
690 +
691 + // Change url and source_url from VARCHAR to TEXT to handle long URLs
692 + // This is especially important for URLs with UTF-8 encoded characters (Hebrew, Arabic, etc.)
693 + $wpdb->query("ALTER TABLE {$table_name} MODIFY COLUMN url TEXT");
694 + $wpdb->query("ALTER TABLE {$table_name} MODIFY COLUMN source_url TEXT");
695 +
696 + //error_log("MxChat: Successfully updated url and source_url columns to TEXT type for long URL support");
697 +}
698 +
699 +/**
700 + * Migrate deprecated AI models to their replacements
701 + * Version 2.5.1: Migrate Claude 3.5 Sonnet (deprecated) to Claude 3.7 Sonnet
702 + * Version 3.1.2: Convert chat transcripts table to utf8mb4 for emoji support
703 + * Without utf8mb4, any bot response containing emojis silently fails to insert.
704 + */
705 +function mxchat_migrate_transcripts_charset() {
706 + global $wpdb;
707 + $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
708 + $wpdb->query("ALTER TABLE $table_name CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci");
709 +}
710 +
711 +/**
712 + * Version 3.0.55: Migrate GPT-4 series models (deprecated 2026-02-17) to GPT-5 series
713 + */
714 +function mxchat_migrate_deprecated_models() {
715 + $options = get_option('mxchat_options', array());
716 + $migrated = false;
717 + $migration_message = '';
718 +
719 + if (!isset($options['model'])) {
720 + return;
721 + }
722 +
723 + $current_model = $options['model'];
724 +
725 + // Migrate deprecated Claude models to Claude Opus 4.6 (recommended replacement per Anthropic)
726 + $deprecated_claude_models = array(
727 + 'claude-3-5-sonnet-20240620', // Retired Oct 28, 2025
728 + 'claude-3-5-sonnet-20241022', // Retired Oct 28, 2025
729 + 'claude-3-7-sonnet-20250219', // Retiring Feb 19, 2026
730 + 'claude-3-opus-20240229', // Retired Jan 5, 2026
731 + 'claude-3-sonnet-20240229', // Legacy
732 + 'claude-3-haiku-20240307', // Legacy
733 + );
734 + if (in_array($current_model, $deprecated_claude_models, true)) {
735 + $options['model'] = 'claude-opus-4-6';
736 + $migrated = true;
737 + $migration_message = sprintf(
738 + __('Your chatbot model has been automatically updated from %s to Claude Opus 4.6 due to Anthropic deprecating older Claude models.', 'mxchat'),
739 + $current_model
740 + );
741 + }
742 +
743 + // Migrate deprecated Claude Haiku 3.5 to Claude Haiku 4.5
744 + if ($current_model === 'claude-3-5-haiku-20241022') {
745 + $options['model'] = 'claude-haiku-4-5-20251001';
746 + $migrated = true;
747 + $migration_message = __('Your chatbot model has been automatically updated from Claude Haiku 3.5 to Claude Haiku 4.5 due to Anthropic deprecating the older model.', 'mxchat');
748 + }
749 +
750 + // Migrate deprecated GPT-4 series and GPT-3.5 Turbo to GPT-5.1 Chat Latest
751 + if (in_array($current_model, array('gpt-4o', 'gpt-4.1-2025-04-14', 'gpt-4-turbo', 'gpt-4', 'gpt-3.5-turbo'), true)) {
752 + $options['model'] = 'gpt-5.1-chat-latest';
753 + $migrated = true;
754 + $migration_message = sprintf(
755 + __('Your chatbot model has been automatically updated from %s to GPT-5.1 Chat Latest due to OpenAI deprecating older models.', 'mxchat'),
756 + $current_model
757 + );
758 + }
759 +
760 + // Migrate deprecated GPT-4o Mini and GPT-4.1 Mini to GPT-5 Mini
761 + if (in_array($current_model, array('gpt-4o-mini', 'gpt-4.1-mini'), true)) {
762 + $options['model'] = 'gpt-5-mini';
763 + $migrated = true;
764 + $migration_message = sprintf(
765 + __('Your chatbot model has been automatically updated from %s to GPT-5 Mini due to OpenAI deprecating GPT-4 series models.', 'mxchat'),
766 + $current_model
767 + );
768 + }
769 +
770 + if ($migrated) {
771 + update_option('mxchat_options', $options);
772 + update_option('mxchat_model_migrated_notice', true);
773 + update_option('mxchat_model_migration_message', $migration_message);
774 + }
775 +}
776 +
777 +/**
778 + * Show admin notice after model migration
779 + */
780 +function mxchat_show_migration_notice() {
781 + if (get_option('mxchat_model_migrated_notice')) {
782 + $migration_message = get_option('mxchat_model_migration_message', __('Your chatbot model has been automatically updated due to a model deprecation.', 'mxchat'));
783 + ?>
784 + <div class="notice notice-info is-dismissible">
785 + <p>
786 + <strong><?php esc_html_e('MxChat Model Updated', 'mxchat'); ?></strong><br>
787 + <?php echo esc_html($migration_message); ?>
788 + </p>
789 + </div>
790 + <?php
791 + delete_option('mxchat_model_migrated_notice');
792 + delete_option('mxchat_model_migration_message');
793 + }
794 +}
795 +
796 +function mxchat_activate() {
797 + global $wpdb;
798 + $charset_collate = $wpdb->get_charset_collate();
799 +
800 + //error_log("MxChat: Running activation function");
801 +
802 + // Create chat transcripts table with improved function
803 + mxchat_create_chat_transcripts_table();
804 +
805 + // System Prompt Content Table - UPDATED: Use TEXT for url and source_url columns
806 + $system_prompt_table = $wpdb->prefix . 'mxchat_system_prompt_content';
807 + $sql_system_prompt = "CREATE TABLE $system_prompt_table (
808 + id MEDIUMINT(9) NOT NULL AUTO_INCREMENT,
809 + url TEXT NOT NULL,
810 + article_content LONGTEXT NOT NULL,
811 + embedding_vector LONGTEXT,
812 + source_url TEXT DEFAULT NULL,
813 + role_restriction VARCHAR(50) DEFAULT 'public',
814 + content_type VARCHAR(50) DEFAULT 'content',
815 + timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
816 + PRIMARY KEY (id),
817 + KEY content_type (content_type)
818 + ) $charset_collate;";
819 +
820 + // Intents Table - NOW INCLUDES enabled_bots column from the start
821 + $intents_table = $wpdb->prefix . 'mxchat_intents';
822 + $sql_intents_table = "CREATE TABLE $intents_table (
823 + id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
824 + intent_label VARCHAR(255) NOT NULL,
825 + phrases TEXT NOT NULL,
826 + embedding_vector LONGTEXT NOT NULL,
827 + callback_function VARCHAR(255) NOT NULL,
828 + similarity_threshold FLOAT DEFAULT 0.85,
829 + enabled TINYINT(1) NOT NULL DEFAULT 1,
830 + enabled_bots LONGTEXT DEFAULT NULL,
831 + PRIMARY KEY (id)
832 + ) $charset_collate;";
833 +
834 + require_once ABSPATH . 'wp-admin/includes/upgrade.php';
835 +
836 + // Create other tables
837 + dbDelta($sql_system_prompt);
838 + dbDelta($sql_intents_table);
839 +
840 + // Create URL click tracking table
841 + mxchat_create_url_clicks_table();
842 +
843 + // Create Pinecone roles table
844 + mxchat_create_pinecone_roles_table();
845 +
846 + // NEW 2.5.2: Create queue processing tables
847 + mxchat_create_queue_tables();
848 +
849 + // Create transcript translations table
850 + mxchat_create_translations_table();
851 +
852 + // Ensure additional columns in system prompt table
853 + $existing_system_columns = $wpdb->get_results("SHOW COLUMNS FROM $system_prompt_table");
854 + if (!empty($existing_system_columns)) {
855 + $existing_system_column_names = array_column($existing_system_columns, 'Field');
856 +
857 + if (!in_array('embedding_vector', $existing_system_column_names)) {
858 + $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN embedding_vector LONGTEXT");
859 + }
860 + if (!in_array('source_url', $existing_system_column_names)) {
861 + $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN source_url TEXT DEFAULT NULL");
862 + }
863 + if (!in_array('role_restriction', $existing_system_column_names)) {
864 + $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN role_restriction VARCHAR(50) DEFAULT 'public' AFTER source_url");
865 + }
866 + }
867 +
868 + // Set default thresholds for existing intents
869 + $wpdb->query("UPDATE {$intents_table} SET similarity_threshold = 0.85 WHERE similarity_threshold IS NULL");
870 +
871 + // Ensure enabled column exists in intents table
872 + $existing_intent_columns = $wpdb->get_results("SHOW COLUMNS FROM $intents_table");
873 + if (!empty($existing_intent_columns)) {
874 + $existing_intent_column_names = array_column($existing_intent_columns, 'Field');
875 +
876 + if (!in_array('enabled', $existing_intent_column_names)) {
877 + $wpdb->query("ALTER TABLE $intents_table ADD COLUMN enabled TINYINT(1) NOT NULL DEFAULT 1");
878 + }
879 +
880 + // Ensure enabled_bots column exists for existing installations
881 + if (!in_array('enabled_bots', $existing_intent_column_names)) {
882 + $wpdb->query("ALTER TABLE $intents_table ADD COLUMN enabled_bots LONGTEXT DEFAULT NULL AFTER enabled");
883 +
884 + // Set existing actions to work with default bot
885 + $default_bots = json_encode(['default']);
886 + $wpdb->query($wpdb->prepare(
887 + "UPDATE {$intents_table} SET enabled_bots = %s WHERE enabled_bots IS NULL",
888 + $default_bots
889 + ));
890 + }
891 + }
892 +
893 + // Run migration for existing installations
894 + mxchat_migrate_pinecone_roles_add_bot_id();
895 +
896 + // Setup cron jobs
897 + mxchat_setup_cron_jobs();
898 +
899 + // Update version
900 + update_option('mxchat_plugin_version', MXCHAT_VERSION);
901 +
902 + //error_log("MxChat: Activation function completed");
903 +}
904 +
905 +/**
906 + * Setup cron jobs on plugin activation
907 + */
908 +function mxchat_setup_cron_jobs() {
909 + // Clear any existing cron jobs first
910 + wp_clear_scheduled_hook('mxchat_reset_rate_limits');
911 +
912 + // Check if WordPress cron is disabled
913 + if (defined('DISABLE_WP_CRON') && DISABLE_WP_CRON) {
914 + // Set flag to use fallback system
915 + update_option('mxchat_use_fallback_rate_limits', true);
916 + update_option('mxchat_next_rate_limit_check', time() + 3600);
917 + return;
918 + }
919 +
920 + // Schedule the rate limit reset cron job
921 + $result = wp_schedule_event(time() + 300, 'hourly', 'mxchat_reset_rate_limits');
922 +
923 + if ($result === false) {
924 + // Fallback if scheduling fails
925 + update_option('mxchat_use_fallback_rate_limits', true);
926 + update_option('mxchat_next_rate_limit_check', time() + 3600);
927 + } else {
928 + // Clear fallback flags if cron scheduling succeeded
929 + delete_option('mxchat_use_fallback_rate_limits');
930 + }
931 +
932 + // Schedule transcript cleanup if configured
933 + $transcript_options = get_option('mxchat_transcripts_options', array());
934 + $cleanup_interval = isset($transcript_options['mxchat_auto_delete_transcripts']) ? $transcript_options['mxchat_auto_delete_transcripts'] : 'never';
935 +
936 + if ($cleanup_interval !== 'never') {
937 + // Check if not already scheduled
938 + if (!wp_next_scheduled('mxchat_cleanup_old_transcripts')) {
939 + // Schedule to run daily at 3 AM
940 + $next_run = strtotime('tomorrow 3:00 AM');
941 + wp_schedule_event($next_run, 'daily', 'mxchat_cleanup_old_transcripts');
942 + }
943 + }
944 +}
945 +
946 +/**
947 + * Clean up on plugin deactivation
948 + */
949 +function mxchat_deactivate() {
950 + // Clear scheduled cron jobs
951 + wp_clear_scheduled_hook('mxchat_reset_rate_limits');
952 + wp_clear_scheduled_hook('mxchat_cleanup_old_transcripts');
953 + wp_clear_scheduled_hook('mxchat_send_delayed_transcript');
954 +
955 + // Clear fallback options
956 + delete_option('mxchat_use_fallback_rate_limits');
957 + delete_option('mxchat_next_rate_limit_check');
958 + delete_option('mxchat_fallback_check_interval');
959 +
960 + // NOTE: We do NOT delete queue tables on deactivation
961 + // This preserves data if user accidentally deactivates the plugin
962 +}
963 +
964 +/**
965 + * Check if fallback rate limit cleanup is needed
966 + */
967 +function mxchat_check_fallback_rate_limits() {
968 + $use_fallback = get_option('mxchat_use_fallback_rate_limits', false);
969 +
970 + if (!$use_fallback) {
971 + return;
972 + }
973 +
974 + $next_check = get_option('mxchat_next_rate_limit_check', 0);
975 +
976 + if (time() >= $next_check) {
977 + // Only run reset if the MxChat_Integrator class exists
978 + if (class_exists('MxChat_Integrator')) {
979 + $integrator = new MxChat_Integrator();
980 + if (method_exists($integrator, 'mxchat_reset_rate_limits')) {
981 + $integrator->mxchat_reset_rate_limits();
982 + update_option('mxchat_next_rate_limit_check', time() + 3600);
983 + }
984 + }
985 + }
986 +}
987 +
988 +/**
989 + * Robust update checking with role restriction migration, model deprecation, and queue tables
990 + * CRITICAL: This runs on EVERY page load to ensure tables exist
991 + */
992 +function mxchat_check_for_update() {
993 + global $wpdb;
994 +
995 + try {
996 + $current_version = get_option('mxchat_plugin_version', '0.0.0');
997 + $plugin_version = MXCHAT_VERSION;
998 +
999 + // Always ensure critical tables exist (even if version matches)
1000 + // This handles manual table deletion or fresh installs
1001 + $chat_table = $wpdb->prefix . 'mxchat_chat_transcripts';
1002 + $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
1003 +
1004 + $chat_exists = $wpdb->get_var("SHOW TABLES LIKE '$chat_table'") === $chat_table;
1005 + $queue_exists = $wpdb->get_var("SHOW TABLES LIKE '$queue_table'") === $queue_table;
1006 +
1007 + if (!$chat_exists || !$queue_exists) {
1008 + //error_log("MxChat: Critical tables missing, running activation");
1009 + mxchat_activate();
1010 + }
1011 +
1012 + // Version-specific migrations
1013 + if ($current_version !== $plugin_version) {
1014 + //error_log("MxChat: Version change detected: $current_version -> $plugin_version");
1015 +
1016 + // Run live agent update BEFORE updating the stored version
1017 + mxchat_handle_live_agent_update();
1018 +
1019 + // Run theme migration notice for 3.0.1 (AI theme CSS structure changes)
1020 + mxchat_handle_theme_migration_notice();
1021 +
1022 + // Run role restriction migration for 2.4.1
1023 + if (version_compare($current_version, '2.4.1', '<')) {
1024 + mxchat_add_role_restriction_column();
1025 + }
1026 +
1027 + // Run enabled_bots column migration for 2.4.4
1028 + if (version_compare($current_version, '2.4.4', '<')) {
1029 + mxchat_add_enabled_bots_column();
1030 + }
1031 +
1032 + // Run model migration for 2.5.1 (Claude deprecation)
1033 + if (version_compare($current_version, '2.5.1', '<')) {
1034 + mxchat_migrate_deprecated_models();
1035 + }
1036 +
1037 + // 2.5.2: Ensure queue tables exist and fix URL column sizes for all users upgrading to 2.5.2
1038 + if (version_compare($current_version, '2.5.2', '<')) {
1039 + mxchat_create_queue_tables();
1040 + mxchat_fix_url_column_size(); // NEW: Fix URL column size for long URLs
1041 + //error_log("MxChat: Queue tables created and URL columns updated for upgrade to 2.5.2");
1042 + }
1043 +
1044 + // 2.6.0: Ensure rag_context column exists for retrieved documents feature
1045 + if (version_compare($current_version, '2.6.0', '<')) {
1046 + $chat_table = $wpdb->prefix . 'mxchat_chat_transcripts';
1047 + mxchat_ensure_all_columns($chat_table);
1048 + //error_log("MxChat: rag_context column migration for 2.6.0");
1049 + }
1050 +
1051 + // 3.0.5: Migrate deprecated Gemini embedding model
1052 + if (version_compare($current_version, '3.0.5', '<')) {
1053 + mxchat_migrate_gemini_embedding_model();
1054 + }
1055 +
1056 + // 3.0.6: Migrate deprecated OpenAI and Claude models
1057 + if (version_compare($current_version, '3.0.6', '<')) {
1058 + mxchat_migrate_deprecated_models();
1059 + }
1060 +
1061 + // 3.1.2: Convert chat transcripts table to utf8mb4 for emoji support
1062 + if (version_compare($current_version, '3.1.2', '<')) {
1063 + mxchat_migrate_transcripts_charset();
1064 + }
1065 +
1066 + // Run full activation to ensure everything is up to date
1067 + mxchat_activate();
1068 +
1069 + // Run migration functions
1070 + mxchat_migrate_live_agent_status();
1071 +
1072 + // Add the cleanup function for version 2.1.8
1073 + if (version_compare($current_version, '2.1.8', '<')) {
1074 + $deleted = mxchat_cleanup_orphaned_chat_history();
1075 + }
1076 +
1077 + // Update version LAST
1078 + update_option('mxchat_plugin_version', $plugin_version);
1079 +
1080 + //error_log("MxChat: Updated from version $current_version to $plugin_version");
1081 + }
1082 +
1083 + } catch (Exception $e) {
1084 + //error_log('MxChat update error: ' . $e->getMessage());
1085 + // Don't update version if there was an error
1086 + }
1087 +}
1088 +
1089 +/**
1090 + * Ensure tables exist on every admin load for fresh installations
1091 + * This is a safety net for cases where activation hook doesn't fire
1092 + */
1093 +function mxchat_ensure_tables_exist() {
1094 + global $wpdb;
1095 +
1096 + // Only run for admin users to avoid performance impact
1097 + if (!current_user_can('administrator')) {
1098 + return;
1099 + }
1100 +
1101 + // Check if we've already verified tables in this session
1102 + static $tables_checked = false;
1103 + if ($tables_checked) {
1104 + return;
1105 + }
1106 + $tables_checked = true;
1107 +
1108 + $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
1109 + $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
1110 +
1111 + $chat_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
1112 + $queue_exists = $wpdb->get_var("SHOW TABLES LIKE '$queue_table'") === $queue_table;
1113 +
1114 + if (!$chat_exists || !$queue_exists) {
1115 + //error_log("MxChat: Tables missing on admin load, running activation");
1116 + mxchat_activate();
1117 + }
1118 +}
1119 +
1120 +/**
1121 + * Clean up orphaned chat history options from the wp_options table
1122 + * @return int Number of options deleted
1123 + */
1124 +function mxchat_cleanup_orphaned_chat_history() {
1125 + global $wpdb;
1126 + $count = 0;
1127 +
1128 + // Get all option keys that match our pattern
1129 + $history_options = $wpdb->get_results(
1130 + "SELECT option_name FROM {$wpdb->options}
1131 + WHERE option_name LIKE 'mxchat_history_%'"
1132 + );
1133 +
1134 + if (!empty($history_options)) {
1135 + foreach ($history_options as $option) {
1136 + // Extract the session ID from the option name
1137 + $session_id = str_replace('mxchat_history_', '', $option->option_name);
1138 +
1139 + // Check if this session still exists in the custom table
1140 + $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
1141 + $exists = $wpdb->get_var(
1142 + $wpdb->prepare(
1143 + "SELECT COUNT(*) FROM {$table_name} WHERE session_id = %s",
1144 + $session_id
1145 + )
1146 + );
1147 +
1148 + // If session doesn't exist in the main table, delete the option
1149 + if ($exists == 0) {
1150 + delete_option($option->option_name);
1151 + // Also delete related metadata
1152 + delete_option("mxchat_email_{$session_id}");
1153 + delete_option("mxchat_name_{$session_id}");
1154 + delete_option("mxchat_agent_name_{$session_id}");
1155 + $count++;
1156 + }
1157 + }
1158 + }
1159 +
1160 + return $count;
1161 +}
1162 +
1163 +function mxchat_migrate_live_agent_status() {
1164 + $options = get_option('mxchat_options', []);
1165 +
1166 + // Check if live_agent_status exists
1167 + if (isset($options['live_agent_status'])) {
1168 + $current_status = $options['live_agent_status'];
1169 + $needs_update = false;
1170 +
1171 + // Convert to new format if needed
1172 + if ($current_status === 'online') {
1173 + $options['live_agent_status'] = 'on';
1174 + $needs_update = true;
1175 + } else if ($current_status === 'offline') {
1176 + $options['live_agent_status'] = 'off';
1177 + $needs_update = true;
1178 + } else if (!in_array($current_status, ['on', 'off'])) {
1179 + // Default to off for any unexpected values
1180 + $options['live_agent_status'] = 'off';
1181 + $needs_update = true;
1182 + }
1183 +
1184 + // Only update if needed
1185 + if ($needs_update) {
1186 + update_option('mxchat_options', $options);
1187 + }
1188 + } else {
1189 + // If status doesn't exist, set default to off
1190 + $options['live_agent_status'] = 'off';
1191 + update_option('mxchat_options', $options);
1192 + }
1193 +}
1194 +
1195 +function mxchat_handle_live_agent_update() {
1196 + // Get the CURRENT stored version (before it gets updated)
1197 + $current_version = get_option('mxchat_plugin_version', '0.0.0');
1198 + $new_version = '2.2.2';
1199 +
1200 + // Only run this once for the update to 2.2.2
1201 + $update_handled = get_option('mxchat_live_agent_update_2_2_2_handled', false);
1202 +
1203 + // Check if we're upgrading TO 2.2.2 and haven't handled this yet
1204 + if (version_compare($current_version, $new_version, '<') && !$update_handled) {
1205 + $options = get_option('mxchat_options', array());
1206 +
1207 + // Check if live agent was previously enabled
1208 + if (isset($options['live_agent_status']) && $options['live_agent_status'] === 'on') {
1209 + // Disable live agent
1210 + $options['live_agent_status'] = 'off';
1211 + update_option('mxchat_options', $options);
1212 +
1213 + // Set flag to show the notification banner
1214 + update_option('mxchat_show_live_agent_disabled_notice', true);
1215 + }
1216 +
1217 + // Mark this update as handled
1218 + update_option('mxchat_live_agent_update_2_2_2_handled', true);
1219 + }
1220 +}
1221 +
1222 +/**
1223 + * Handle theme migration notice for version 3.0.1
1224 + * Shows a dismissible notice to Pro users about migrating AI-generated themes
1225 + */
1226 +function mxchat_handle_theme_migration_notice() {
1227 + // Get the CURRENT stored version (before it gets updated)
1228 + $current_version = get_option('mxchat_plugin_version', '0.0.0');
1229 + $target_version = '3.0.1';
1230 +
1231 + // Only run this once for the update to 3.0.1
1232 + $update_handled = get_option('mxchat_theme_migration_update_3_0_1_handled', false);
1233 +
1234 + // Check if we're upgrading TO 3.0.1 and haven't handled this yet
1235 + if (version_compare($current_version, $target_version, '<') && !$update_handled) {
1236 + // Check if Pro is activated - only show to Pro users
1237 + $license_status = get_option('mxchat_license_status', 'inactive');
1238 + $is_pro = ($license_status === 'active' || $license_status === esc_html__('active', 'mxchat'));
1239 +
1240 + if ($is_pro) {
1241 + // Set flag to show the theme migration notification banner
1242 + update_option('mxchat_show_theme_migration_notice', true);
1243 + }
1244 +
1245 + // Mark this update as handled (whether Pro or not)
1246 + update_option('mxchat_theme_migration_update_3_0_1_handled', true);
1247 + }
1248 +}
1249 +
1250 +// Initialize plugin safely
1251 +function mxchat_init() {
1252 + // Include all class files first
1253 + mxchat_include_classes();
1254 +
1255 + // Run update check (this also ensures tables exist)
1256 + mxchat_check_for_update();
1257 +
1258 + // CRITICAL: Ensure tables exist on admin pages (safety net)
1259 + add_action('admin_init', 'mxchat_ensure_tables_exist', 1);
1260 +
1261 + // Add fallback rate limit check
1262 + add_action('init', 'mxchat_check_fallback_rate_limits', 5);
1263 +
1264 + // Add migration notice hook
1265 + add_action('admin_notices', 'mxchat_show_migration_notice');
1266 +
1267 + // Initialize classes with error handling
1268 + try {
1269 + // Initialize admin classes
1270 + if (is_admin()) {
1271 + if (class_exists('MxChat_Knowledge_Manager')) {
1272 + $mxchat_knowledge_manager = new MxChat_Knowledge_Manager();
1273 +
1274 + if (class_exists('MxChat_Admin')) {
1275 + $mxchat_admin = new MxChat_Admin($mxchat_knowledge_manager);
1276 + }
1277 + }
1278 +
1279 + // Initialize meta box class
1280 + if (class_exists('MxChat_Meta_Box')) {
1281 + new MxChat_Meta_Box();
1282 + }
1283 +
1284 + }
1285 +
1286 + // Initialize content generator globally — it registers wp_head hook
1287 + // for frontend CSS injection, plus wp_ajax_ hooks for admin.
1288 + if (class_exists('MxChat_Content_Generator')) {
1289 + new MxChat_Content_Generator();
1290 + }
1291 +
1292 + // Initialize public classes
1293 + if (class_exists('MxChat_Public')) {
1294 + $mxchat_public = new MxChat_Public();
1295 + }
1296 +
1297 + if (class_exists('MxChat_Integrator')) {
1298 + global $mxchat_integrator;
1299 + $mxchat_integrator = new MxChat_Integrator();
1300 + }
1301 +
1302 + } catch (Exception $e) {
1303 + //error_log('MxChat initialization error: ' . $e->getMessage());
1304 +
1305 + // Show admin notice if there's an error
1306 + if (is_admin()) {
1307 + add_action('admin_notices', function() use ($e) {
1308 + echo '<div class="notice notice-error"><p>';
1309 + echo '<strong>MxChat Error:</strong> Plugin initialization failed. ';
1310 + echo 'Please check error logs or contact support. Error: ' . esc_html($e->getMessage());
1311 + echo '</p></div>';
1312 + });
1313 + }
1314 + }
1315 +}
1316 +
1317 +// Run initialization on plugins_loaded
1318 +add_action('plugins_loaded', 'mxchat_init');
1319 +
1320 +// Run migration check on admin init (for auto-updates without reactivation)
1321 +add_action('admin_init', 'mxchat_check_and_run_migrations');
1322 +
1323 +/**
1324 + * Check and run migrations on admin init
1325 + * This ensures migrations run even when plugin is auto-updated
1326 + */
1327 +function mxchat_check_and_run_migrations() {
1328 + // Only run in admin and not on every request
1329 + static $checked = false;
1330 + if ($checked) {
1331 + return;
1332 + }
1333 + $checked = true;
1334 +
1335 + mxchat_migrate_pinecone_roles_add_bot_id();
1336 + mxchat_migrate_add_content_type_column();
1337 + mxchat_migrate_add_translations_table();
1338 +}
1339 +
1340 +/**
1341 + * Migration: Create transcript translations table (v3.0.4)
1342 + * For users upgrading from versions before 3.0.4
1343 + */
1344 +function mxchat_migrate_add_translations_table() {
1345 + $migration_key = 'mxchat_translations_table_created';
1346 +
1347 + // Check if migration already ran
1348 + if (get_option($migration_key)) {
1349 + return;
1350 + }
1351 +
1352 + // Create the translations table
1353 + mxchat_create_translations_table();
1354 +
1355 + // Mark migration as complete
1356 + update_option($migration_key, '3.0.4');
1357 +}
1358 +
1359 +/**
1360 + * Migration: Update deprecated Gemini embedding model (v3.0.5)
1361 + * Updates gemini-embedding-exp-03-07 to gemini-embedding-001 for users who had it selected
1362 + */
1363 +function mxchat_migrate_gemini_embedding_model() {
1364 + $options = get_option('mxchat_options', array());
1365 +
1366 + if (isset($options['embedding_model']) && $options['embedding_model'] === 'gemini-embedding-exp-03-07') {
1367 + $options['embedding_model'] = 'gemini-embedding-001';
1368 + update_option('mxchat_options', $options);
1369 + }
1370 +}
1371 +
1372 +// Register activation hook
1373 +register_activation_hook(__FILE__, 'mxchat_activate');
1374 +
1375 +// Add cron schedule
1376 +add_filter('cron_schedules', function($schedules) {
1377 + $schedules['one_minute'] = array(
1378 + 'interval' => 60,
1379 + 'display' => 'Every Minute'
1380 + );
1381 + return $schedules;
1382 +});
1383 +
1384 +// Register deactivation hook
1385 +register_deactivation_hook(__FILE__, 'mxchat_deactivate');