PluginProbe
MxChat – AI Chatbot & Content Generation for WordPress / 3.0.7
MxChat – AI Chatbot & Content Generation for WordPress v3.0.7
3.2.21 3.2.20 3.2.19 3.2.18 3.2.17 3.2.16 3.2.15 3.2.14 3.2.12 3.2.13 3.2.11 3.2.10 3.2.9 3.2.8 3.2.7 3.2.6 3.2.5 3.2.4 3.2.3 3.2.2 3.2.1 2.0.3 2.0.4 2.0.5 2.0.6 All 152 releases
← All changes | mxchat-basic.php +1141 -1462 3.2.5 → 3.0.7 View file →
@@ -1,1463 +1,1142 @@
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: 3.2.5
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 -// Include classes with error handling
255 -function mxchat_include_classes() {
256 - $class_files = array(
257 - 'includes/class-mxchat-integrator.php',
258 - 'includes/class-mxchat-admin.php',
259 - 'includes/class-mxchat-public.php',
260 - 'includes/class-mxchat-utils.php',
261 - 'includes/class-mxchat-user.php',
262 - 'includes/class-mxchat-meta-box.php',
263 - 'includes/class-mxchat-chunker.php',
264 - 'includes/class-mxchat-word-handler.php',
265 - 'includes/class-mxchat-content-generator.php',
266 - 'includes/class-rest-api.php',
267 - 'admin/class-ajax-handler.php',
268 - 'admin/class-pinecone-manager.php',
269 - 'admin/class-knowledge-manager.php'
270 - );
271 -
272 - foreach ($class_files as $file) {
273 - $file_path = plugin_dir_path(__FILE__) . $file;
274 - if (file_exists($file_path)) {
275 - require_once $file_path;
276 - } else {
277 - //error_log('MxChat: Missing class file - ' . $file);
278 - }
279 - }
280 -
281 - // Admin pages that aren't classes (procedural include).
282 - if (is_admin()) {
283 - $admin_api_page = plugin_dir_path(__FILE__) . 'includes/admin-api-page.php';
284 - if (file_exists($admin_api_page)) {
285 - require_once $admin_api_page;
286 - }
287 - }
288 -}
289 -
290 -/**
291 - * Lazy-load the PDF parser library only when needed.
292 - * Avoids loading 44 files on every page request.
293 - */
294 -function mxchat_load_pdf_parser() {
295 - if (class_exists('\Smalot\PdfParser\Parser')) {
296 - return true;
297 - }
298 - $autoload_path = plugin_dir_path(__FILE__) . 'includes/pdf-parser/alt_autoload.php';
299 - if (file_exists($autoload_path)) {
300 - require_once $autoload_path;
301 - return true;
302 - }
303 - return false;
304 -}
305 -
306 -/**
307 - * Create URL click tracking table
308 - */
309 -function mxchat_create_url_clicks_table() {
310 - global $wpdb;
311 -
312 - $table_name = $wpdb->prefix . 'mxchat_url_clicks';
313 -
314 - $charset_collate = $wpdb->get_charset_collate();
315 -
316 - $sql = "CREATE TABLE $table_name (
317 - id mediumint(9) NOT NULL AUTO_INCREMENT,
318 - session_id varchar(100) NOT NULL,
319 - clicked_url text NOT NULL,
320 - message_context text,
321 - click_timestamp datetime DEFAULT CURRENT_TIMESTAMP,
322 - user_ip varchar(45),
323 - user_agent text,
324 - PRIMARY KEY (id),
325 - KEY session_id (session_id),
326 - KEY click_timestamp (click_timestamp)
327 - ) $charset_collate;";
328 -
329 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
330 - dbDelta($sql);
331 -}
332 -
333 -/**
334 - * FIXED: Robust table creation and column management
335 - */
336 -function mxchat_create_chat_transcripts_table() {
337 - global $wpdb;
338 -
339 - $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
340 - $charset_collate = $wpdb->get_charset_collate();
341 -
342 - // Create table with ALL columns including user_name from the start
343 - $sql = "CREATE TABLE $table_name (
344 - id MEDIUMINT(9) NOT NULL AUTO_INCREMENT,
345 - user_id MEDIUMINT(9) DEFAULT 0,
346 - session_id VARCHAR(255) NOT NULL,
347 - role VARCHAR(255) NOT NULL,
348 - message TEXT NOT NULL,
349 - user_email VARCHAR(255) DEFAULT NULL,
350 - user_name VARCHAR(100) DEFAULT NULL,
351 - user_identifier VARCHAR(255) DEFAULT NULL,
352 - originating_page_url TEXT DEFAULT NULL,
353 - originating_page_title VARCHAR(500) DEFAULT NULL,
354 - timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
355 - PRIMARY KEY (id),
356 - KEY session_id (session_id),
357 - KEY user_email (user_email),
358 - KEY timestamp (timestamp)
359 - ) $charset_collate;";
360 -
361 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
362 - $result = dbDelta($sql);
363 -
364 - // Log the result for debugging
365 - if (empty($result)) {
366 - //error_log("MxChat: dbDelta returned empty result for chat transcripts table");
367 - } else {
368 - //error_log("MxChat: dbDelta result: " . print_r($result, true));
369 - }
370 -
371 - // IMPORTANT: Ensure all columns exist for existing installations
372 - mxchat_ensure_all_columns($table_name);
373 -}
374 -
375 -/**
376 - * Ensure all required columns exist (for upgrades)
377 - */
378 -function mxchat_ensure_all_columns($table_name) {
379 - global $wpdb;
380 -
381 - // First check if table exists
382 - $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
383 - if (!$table_exists) {
384 - //error_log("MxChat: Table $table_name does not exist, cannot add columns");
385 - return;
386 - }
387 -
388 - // Define all required columns and their types
389 - $required_columns = [
390 - 'user_identifier' => 'VARCHAR(255) DEFAULT NULL',
391 - 'user_email' => 'VARCHAR(255) DEFAULT NULL',
392 - 'user_name' => 'VARCHAR(100) DEFAULT NULL',
393 - 'originating_page_url' => 'TEXT DEFAULT NULL',
394 - 'originating_page_title' => 'VARCHAR(500) DEFAULT NULL',
395 - 'rag_context' => 'LONGTEXT DEFAULT NULL'
396 - ];
397 -
398 - // Get existing columns
399 - $existing_columns = $wpdb->get_results("SHOW COLUMNS FROM $table_name");
400 - if (empty($existing_columns)) {
401 - //error_log("MxChat: Could not get columns for table $table_name");
402 - return;
403 - }
404 -
405 - $existing_column_names = array_column($existing_columns, 'Field');
406 -
407 - // Add missing columns
408 - foreach ($required_columns as $column_name => $column_definition) {
409 - if (!in_array($column_name, $existing_column_names)) {
410 - $alter_sql = "ALTER TABLE $table_name ADD COLUMN $column_name $column_definition";
411 - $result = $wpdb->query($alter_sql);
412 -
413 - if ($result === false) {
414 - //error_log("MxChat: Failed to add column $column_name to $table_name. Error: " . $wpdb->last_error);
415 - } else {
416 - //error_log("MxChat: Successfully added column $column_name to $table_name");
417 - }
418 - }
419 - }
420 -}
421 -
422 -/**
423 - * Add role restriction column to knowledge base table
424 - */
425 -function mxchat_add_role_restriction_column() {
426 - global $wpdb;
427 - $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
428 -
429 - // Check if table exists first
430 - $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
431 - if (!$table_exists) {
432 - //error_log("MxChat: System prompt content table does not exist, cannot add role_restriction column");
433 - return;
434 - }
435 -
436 - // Check if column already exists
437 - $column_exists = $wpdb->get_results(
438 - $wpdb->prepare(
439 - "SHOW COLUMNS FROM {$table_name} LIKE %s",
440 - 'role_restriction'
441 - )
442 - );
443 -
444 - if (empty($column_exists)) {
445 - $alter_sql = "ALTER TABLE {$table_name} ADD COLUMN role_restriction VARCHAR(50) DEFAULT 'public' AFTER source_url";
446 - $result = $wpdb->query($alter_sql);
447 -
448 - if ($result === false) {
449 - //error_log("MxChat: Failed to add role_restriction column. Error: " . $wpdb->last_error);
450 - } else {
451 - //error_log("MxChat: Successfully added role_restriction column");
452 -
453 - // Set all existing records to 'public' (everyone can access)
454 - $update_result = $wpdb->query(
455 - "UPDATE {$table_name}
456 - SET role_restriction = 'public'
457 - WHERE role_restriction IS NULL OR role_restriction = ''"
458 - );
459 -
460 - if ($update_result !== false) {
461 - //error_log("MxChat: Updated {$update_result} existing records to public access");
462 - }
463 - }
464 - }
465 -}
466 -
467 -/**
468 - * Add enabled_bots column to intents table for multi-bot action filtering
469 - */
470 -function mxchat_add_enabled_bots_column() {
471 - global $wpdb;
472 - $table_name = $wpdb->prefix . 'mxchat_intents';
473 -
474 - // Check if table exists first
475 - $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
476 - if (!$table_exists) {
477 - //error_log("MxChat: Intents table does not exist, cannot add enabled_bots column");
478 - return;
479 - }
480 -
481 - // Check if column already exists
482 - $column_exists = $wpdb->get_results(
483 - $wpdb->prepare(
484 - "SHOW COLUMNS FROM {$table_name} LIKE %s",
485 - 'enabled_bots'
486 - )
487 - );
488 -
489 - if (empty($column_exists)) {
490 - $alter_sql = "ALTER TABLE {$table_name} ADD COLUMN enabled_bots LONGTEXT DEFAULT NULL AFTER enabled";
491 - $result = $wpdb->query($alter_sql);
492 -
493 - if ($result === false) {
494 - //error_log("MxChat: Failed to add enabled_bots column. Error: " . $wpdb->last_error);
495 - } else {
496 - //error_log("MxChat: Successfully added enabled_bots column");
497 -
498 - // Set all existing actions to work with 'default' bot for backward compatibility
499 - $default_bots = json_encode(['default']);
500 - $update_result = $wpdb->query(
501 - $wpdb->prepare(
502 - "UPDATE {$table_name}
503 - SET enabled_bots = %s
504 - WHERE enabled_bots IS NULL OR enabled_bots = ''",
505 - $default_bots
506 - )
507 - );
508 -
509 - if ($update_result !== false) {
510 - //error_log("MxChat: Updated {$update_result} existing actions to work with default bot");
511 - }
512 - }
513 - }
514 -}
515 -
516 -/**
517 - * Create Pinecone role restrictions table with multi-bot support
518 - */
519 -function mxchat_create_pinecone_roles_table() {
520 - global $wpdb;
521 -
522 - $table_name = $wpdb->prefix . 'mxchat_pinecone_roles';
523 - $charset_collate = $wpdb->get_charset_collate();
524 -
525 - $sql = "CREATE TABLE $table_name (
526 - id mediumint(9) NOT NULL AUTO_INCREMENT,
527 - vector_id varchar(255) NOT NULL,
528 - bot_id varchar(50) NOT NULL DEFAULT 'default',
529 - source_url text,
530 - role_restriction varchar(50) DEFAULT 'public',
531 - updated_at timestamp DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
532 - PRIMARY KEY (id),
533 - UNIQUE KEY vector_bot (vector_id, bot_id),
534 - KEY role_restriction (role_restriction),
535 - KEY bot_id (bot_id)
536 - ) $charset_collate;";
537 -
538 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
539 - dbDelta($sql);
540 -}
541 -
542 -/**
543 - * Add bot_id column to mxchat_pinecone_roles table for multi-bot support
544 - * This migration runs once to update existing installations
545 - */
546 -function mxchat_migrate_pinecone_roles_add_bot_id() {
547 - global $wpdb;
548 -
549 - // Check if migration already ran
550 - $migration_version = get_option('mxchat_pinecone_roles_migration_version', '0');
551 - if (version_compare($migration_version, '2.5.2', '>=')) {
552 - return; // Already migrated
553 - }
554 -
555 - $table_name = $wpdb->prefix . 'mxchat_pinecone_roles';
556 -
557 - // Check if table exists
558 - if ($wpdb->get_var("SHOW TABLES LIKE '{$table_name}'") != $table_name) {
559 - return; // Table doesn't exist yet
560 - }
561 -
562 - // Check if bot_id column already exists
563 - $column_exists = $wpdb->get_results("SHOW COLUMNS FROM {$table_name} LIKE 'bot_id'");
564 -
565 - if (empty($column_exists)) {
566 - // Add bot_id column
567 - $wpdb->query("ALTER TABLE {$table_name} ADD COLUMN bot_id VARCHAR(50) NOT NULL DEFAULT 'default' AFTER vector_id");
568 -
569 - // Update the unique key to include bot_id
570 - $wpdb->query("ALTER TABLE {$table_name} DROP INDEX vector_id");
571 - $wpdb->query("ALTER TABLE {$table_name} ADD UNIQUE KEY vector_bot (vector_id, bot_id)");
572 -
573 - // Add index for bot_id
574 - $wpdb->query("ALTER TABLE {$table_name} ADD KEY bot_id (bot_id)");
575 -
576 - //error_log('MxChat: Successfully added bot_id column to mxchat_pinecone_roles table');
577 - }
578 -
579 - // Mark migration as complete
580 - update_option('mxchat_pinecone_roles_migration_version', '2.5.2');
581 -}
582 -
583 -/**
584 - * 2.5.6: Add content_type column to mxchat_system_prompt_content table
585 - * Enables filtering knowledge base by content type (posts, pages, PDFs, etc.)
586 - */
587 -function mxchat_migrate_add_content_type_column() {
588 - global $wpdb;
589 -
590 - // Check if migration already ran
591 - $migration_version = get_option('mxchat_content_type_migration_version', '0');
592 - if (version_compare($migration_version, '2.5.6', '>=')) {
593 - return;
594 - }
595 -
596 - $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
597 -
598 - // Check if table exists
599 - if ($wpdb->get_var("SHOW TABLES LIKE '{$table_name}'") != $table_name) {
600 - return;
601 - }
602 -
603 - // Check if content_type column already exists
604 - $column_exists = $wpdb->get_results("SHOW COLUMNS FROM {$table_name} LIKE 'content_type'");
605 -
606 - if (empty($column_exists)) {
607 - // Add content_type column with default value 'content' for backwards compatibility
608 - $wpdb->query("ALTER TABLE {$table_name} ADD COLUMN content_type VARCHAR(50) DEFAULT 'content' AFTER role_restriction");
609 -
610 - // Add index for better query performance
611 - $wpdb->query("ALTER TABLE {$table_name} ADD KEY content_type (content_type)");
612 -
613 - //error_log('MxChat: Successfully added content_type column to mxchat_system_prompt_content table');
614 - }
615 -
616 - // Mark migration as complete
617 - update_option('mxchat_content_type_migration_version', '2.5.6');
618 -}
619 -
620 -/**
621 - * 3.2.4: Backfill the active embedding model option for installs that already
622 - * have KB content but no stamped model. The mismatch warning compares this
623 - * against the user's currently selected model — no per-row column needed.
624 - */
625 -function mxchat_backfill_active_embedding_model() {
626 - global $wpdb;
627 -
628 - if (get_option('mxchat_active_embedding_model', '') !== '') {
629 - return;
630 - }
631 -
632 - $kb_table = $wpdb->prefix . 'mxchat_system_prompt_content';
633 - if ($wpdb->get_var("SHOW TABLES LIKE '{$kb_table}'") !== $kb_table) {
634 - return;
635 - }
636 -
637 - $kb_count = (int) $wpdb->get_var("SELECT COUNT(*) FROM {$kb_table}");
638 - if ($kb_count > 0) {
639 - $options = get_option('mxchat_options', array());
640 - $current_model = $options['embedding_model'] ?? 'text-embedding-ada-002';
641 - update_option('mxchat_active_embedding_model', $current_model, false);
642 - }
643 -}
644 -
645 -/**
646 - * 2.5.2: Create queue processing tables for reliable background processing
647 - */
648 -function mxchat_create_queue_tables() {
649 - global $wpdb;
650 - $charset_collate = $wpdb->get_charset_collate();
651 -
652 - // Main queue table
653 - $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
654 - $sql_queue = "CREATE TABLE $queue_table (
655 - id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
656 - queue_id varchar(64) NOT NULL,
657 - item_type varchar(20) NOT NULL,
658 - item_data longtext NOT NULL,
659 - status varchar(20) NOT NULL DEFAULT 'pending',
660 - bot_id varchar(50) NOT NULL DEFAULT 'default',
661 - priority int(11) NOT NULL DEFAULT 0,
662 - attempts int(11) NOT NULL DEFAULT 0,
663 - max_attempts int(11) NOT NULL DEFAULT 3,
664 - error_message text DEFAULT NULL,
665 - created_at datetime NOT NULL,
666 - started_at datetime DEFAULT NULL,
667 - completed_at datetime DEFAULT NULL,
668 - PRIMARY KEY (id),
669 - KEY queue_id (queue_id),
670 - KEY status (status),
671 - KEY item_type (item_type),
672 - KEY priority (priority)
673 - ) $charset_collate;";
674 -
675 - // Queue metadata table
676 - $meta_table = $wpdb->prefix . 'mxchat_queue_meta';
677 - $sql_meta = "CREATE TABLE $meta_table (
678 - id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
679 - queue_id varchar(64) NOT NULL,
680 - meta_key varchar(255) NOT NULL,
681 - meta_value longtext,
682 - PRIMARY KEY (id),
683 - KEY queue_id (queue_id),
684 - KEY meta_key (meta_key)
685 - ) $charset_collate;";
686 -
687 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
688 - dbDelta($sql_queue);
689 - dbDelta($sql_meta);
690 -
691 - //error_log("MxChat: Queue tables created/updated successfully");
692 -}
693 -
694 -/**
695 - * Create transcript translations table for persisting translations
696 - */
697 -function mxchat_create_translations_table() {
698 - global $wpdb;
699 - $charset_collate = $wpdb->get_charset_collate();
700 -
701 - $table_name = $wpdb->prefix . 'mxchat_transcript_translations';
702 - $sql = "CREATE TABLE $table_name (
703 - id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
704 - session_id varchar(255) NOT NULL,
705 - language_code varchar(10) NOT NULL,
706 - translations longtext NOT NULL,
707 - created_at datetime NOT NULL,
708 - updated_at datetime NOT NULL,
709 - PRIMARY KEY (id),
710 - UNIQUE KEY session_lang (session_id, language_code),
711 - KEY session_id (session_id)
712 - ) $charset_collate;";
713 -
714 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
715 - dbDelta($sql);
716 -}
717 -
718 -/**
719 - * 2.5.2: Fix URL column size to support long URLs (especially with UTF-8 encoding)
720 - * This fixes "url, source_url. The supplied values may be too long" errors
721 - */
722 -function mxchat_fix_url_column_size() {
723 - global $wpdb;
724 - $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
725 -
726 - // Check if table exists
727 - $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
728 - if (!$table_exists) {
729 - return;
730 - }
731 -
732 - // Change url and source_url from VARCHAR to TEXT to handle long URLs
733 - // This is especially important for URLs with UTF-8 encoded characters (Hebrew, Arabic, etc.)
734 - $wpdb->query("ALTER TABLE {$table_name} MODIFY COLUMN url TEXT");
735 - $wpdb->query("ALTER TABLE {$table_name} MODIFY COLUMN source_url TEXT");
736 -
737 - //error_log("MxChat: Successfully updated url and source_url columns to TEXT type for long URL support");
738 -}
739 -
740 -/**
741 - * Migrate deprecated AI models to their replacements
742 - * Version 2.5.1: Migrate Claude 3.5 Sonnet (deprecated) to Claude 3.7 Sonnet
743 - * Version 3.1.2: Convert chat transcripts table to utf8mb4 for emoji support
744 - * Without utf8mb4, any bot response containing emojis silently fails to insert.
745 - */
746 -function mxchat_migrate_transcripts_charset() {
747 - global $wpdb;
748 - $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
749 - $wpdb->query("ALTER TABLE $table_name CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci");
750 -}
751 -
752 -/**
753 - * Version 3.0.55: Migrate GPT-4 series models (deprecated 2026-02-17) to GPT-5 series
754 - */
755 -function mxchat_migrate_deprecated_models() {
756 - $options = get_option('mxchat_options', array());
757 - $migrated = false;
758 - $migration_message = '';
759 -
760 - if (!isset($options['model'])) {
761 - return;
762 - }
763 -
764 - $current_model = $options['model'];
765 -
766 - // Migrate deprecated Claude models to Claude Opus 4.6 (recommended replacement per Anthropic)
767 - $deprecated_claude_models = array(
768 - 'claude-3-5-sonnet-20240620', // Retired Oct 28, 2025
769 - 'claude-3-5-sonnet-20241022', // Retired Oct 28, 2025
770 - 'claude-3-7-sonnet-20250219', // Retiring Feb 19, 2026
771 - 'claude-3-opus-20240229', // Retired Jan 5, 2026
772 - 'claude-3-sonnet-20240229', // Legacy
773 - 'claude-3-haiku-20240307', // Legacy
774 - );
775 - if (in_array($current_model, $deprecated_claude_models, true)) {
776 - $options['model'] = 'claude-opus-4-6';
777 - $migrated = true;
778 - $migration_message = sprintf(
779 - 'Your chatbot model has been automatically updated from %s to Claude Opus 4.6 due to Anthropic deprecating older Claude models.',
780 - $current_model
781 - );
782 - }
783 -
784 - // Migrate deprecated Claude Haiku 3.5 to Claude Haiku 4.5
785 - if ($current_model === 'claude-3-5-haiku-20241022') {
786 - $options['model'] = 'claude-haiku-4-5-20251001';
787 - $migrated = true;
788 - $migration_message = 'Your chatbot model has been automatically updated from Claude Haiku 3.5 to Claude Haiku 4.5 due to Anthropic deprecating the older model.';
789 - }
790 -
791 - // Migrate deprecated GPT-4 series and GPT-3.5 Turbo to GPT-5.1 Chat Latest
792 - if (in_array($current_model, array('gpt-4o', 'gpt-4.1-2025-04-14', 'gpt-4-turbo', 'gpt-4', 'gpt-3.5-turbo'), true)) {
793 - $options['model'] = 'gpt-5.1-chat-latest';
794 - $migrated = true;
795 - $migration_message = sprintf(
796 - 'Your chatbot model has been automatically updated from %s to GPT-5.1 Chat Latest due to OpenAI deprecating older models.',
797 - $current_model
798 - );
799 - }
800 -
801 - // Migrate deprecated GPT-4o Mini and GPT-4.1 Mini to GPT-5 Mini
802 - if (in_array($current_model, array('gpt-4o-mini', 'gpt-4.1-mini'), true)) {
803 - $options['model'] = 'gpt-5-mini';
804 - $migrated = true;
805 - $migration_message = sprintf(
806 - 'Your chatbot model has been automatically updated from %s to GPT-5 Mini due to OpenAI deprecating GPT-4 series models.',
807 - $current_model
808 - );
809 - }
810 -
811 - if ($migrated) {
812 - update_option('mxchat_options', $options);
813 - update_option('mxchat_model_migrated_notice', true);
814 - update_option('mxchat_model_migration_message', $migration_message);
815 - }
816 -}
817 -
818 -/**
819 - * Show admin notice after model migration
820 - */
821 -function mxchat_show_migration_notice() {
822 - if (get_option('mxchat_model_migrated_notice')) {
823 - $migration_message = get_option('mxchat_model_migration_message', __('Your chatbot model has been automatically updated due to a model deprecation.', 'mxchat'));
824 - ?>
825 - <div class="notice notice-info is-dismissible">
826 - <p>
827 - <strong><?php esc_html_e('MxChat Model Updated', 'mxchat'); ?></strong><br>
828 - <?php echo esc_html($migration_message); ?>
829 - </p>
830 - </div>
831 - <?php
832 - delete_option('mxchat_model_migrated_notice');
833 - delete_option('mxchat_model_migration_message');
834 - }
835 -}
836 -
837 -function mxchat_activate() {
838 - global $wpdb;
839 - $charset_collate = $wpdb->get_charset_collate();
840 -
841 - //error_log("MxChat: Running activation function");
842 -
843 - // Create chat transcripts table with improved function
844 - mxchat_create_chat_transcripts_table();
845 -
846 - // System Prompt Content Table - UPDATED: Use TEXT for url and source_url columns
847 - $system_prompt_table = $wpdb->prefix . 'mxchat_system_prompt_content';
848 - $sql_system_prompt = "CREATE TABLE $system_prompt_table (
849 - id MEDIUMINT(9) NOT NULL AUTO_INCREMENT,
850 - url TEXT NOT NULL,
851 - article_content LONGTEXT NOT NULL,
852 - embedding_vector LONGTEXT,
853 - source_url TEXT DEFAULT NULL,
854 - role_restriction VARCHAR(50) DEFAULT 'public',
855 - content_type VARCHAR(50) DEFAULT 'content',
856 - timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
857 - PRIMARY KEY (id),
858 - KEY content_type (content_type)
859 - ) $charset_collate;";
860 -
861 - // Intents Table - NOW INCLUDES enabled_bots column from the start
862 - $intents_table = $wpdb->prefix . 'mxchat_intents';
863 - $sql_intents_table = "CREATE TABLE $intents_table (
864 - id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
865 - intent_label VARCHAR(255) NOT NULL,
866 - phrases TEXT NOT NULL,
867 - embedding_vector LONGTEXT NOT NULL,
868 - callback_function VARCHAR(255) NOT NULL,
869 - similarity_threshold FLOAT DEFAULT 0.85,
870 - enabled TINYINT(1) NOT NULL DEFAULT 1,
871 - enabled_bots LONGTEXT DEFAULT NULL,
872 - PRIMARY KEY (id)
873 - ) $charset_collate;";
874 -
875 - // Individual Intent Phrases Table - each phrase gets its own embedding vector
876 - $intent_phrases_table = $wpdb->prefix . 'mxchat_intent_phrases';
877 - $sql_intent_phrases_table = "CREATE TABLE $intent_phrases_table (
878 - id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
879 - intent_id BIGINT(20) UNSIGNED NOT NULL,
880 - phrase TEXT NOT NULL,
881 - embedding_vector LONGTEXT NOT NULL,
882 - created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
883 - PRIMARY KEY (id),
884 - KEY intent_id (intent_id)
885 - ) $charset_collate;";
886 -
887 - require_once ABSPATH . 'wp-admin/includes/upgrade.php';
888 -
889 - // Create other tables
890 - dbDelta($sql_system_prompt);
891 - dbDelta($sql_intents_table);
892 - dbDelta($sql_intent_phrases_table);
893 -
894 - // Create URL click tracking table
895 - mxchat_create_url_clicks_table();
896 -
897 - // Create Pinecone roles table
898 - mxchat_create_pinecone_roles_table();
899 -
900 - // NEW 2.5.2: Create queue processing tables
901 - mxchat_create_queue_tables();
902 -
903 - // Create transcript translations table
904 - mxchat_create_translations_table();
905 -
906 - // Ensure additional columns in system prompt table
907 - $existing_system_columns = $wpdb->get_results("SHOW COLUMNS FROM $system_prompt_table");
908 - if (!empty($existing_system_columns)) {
909 - $existing_system_column_names = array_column($existing_system_columns, 'Field');
910 -
911 - if (!in_array('embedding_vector', $existing_system_column_names)) {
912 - $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN embedding_vector LONGTEXT");
913 - }
914 - if (!in_array('source_url', $existing_system_column_names)) {
915 - $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN source_url TEXT DEFAULT NULL");
916 - }
917 - if (!in_array('role_restriction', $existing_system_column_names)) {
918 - $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN role_restriction VARCHAR(50) DEFAULT 'public' AFTER source_url");
919 - }
920 - }
921 -
922 - // Set default thresholds for existing intents
923 - $wpdb->query("UPDATE {$intents_table} SET similarity_threshold = 0.85 WHERE similarity_threshold IS NULL");
924 -
925 - // Ensure enabled column exists in intents table
926 - $existing_intent_columns = $wpdb->get_results("SHOW COLUMNS FROM $intents_table");
927 - if (!empty($existing_intent_columns)) {
928 - $existing_intent_column_names = array_column($existing_intent_columns, 'Field');
929 -
930 - if (!in_array('enabled', $existing_intent_column_names)) {
931 - $wpdb->query("ALTER TABLE $intents_table ADD COLUMN enabled TINYINT(1) NOT NULL DEFAULT 1");
932 - }
933 -
934 - // Ensure enabled_bots column exists for existing installations
935 - if (!in_array('enabled_bots', $existing_intent_column_names)) {
936 - $wpdb->query("ALTER TABLE $intents_table ADD COLUMN enabled_bots LONGTEXT DEFAULT NULL AFTER enabled");
937 -
938 - // Set existing actions to work with default bot
939 - $default_bots = json_encode(['default']);
940 - $wpdb->query($wpdb->prepare(
941 - "UPDATE {$intents_table} SET enabled_bots = %s WHERE enabled_bots IS NULL",
942 - $default_bots
943 - ));
944 - }
945 - }
946 -
947 - // Run migration for existing installations
948 - mxchat_migrate_pinecone_roles_add_bot_id();
949 -
950 - // 3.2.4: Backfill active embedding model option (replaces 3.2.3 column-based tracking)
951 - mxchat_backfill_active_embedding_model();
952 -
953 - // Setup cron jobs
954 - mxchat_setup_cron_jobs();
955 -
956 - // Update version
957 - update_option('mxchat_plugin_version', MXCHAT_VERSION);
958 -
959 - //error_log("MxChat: Activation function completed");
960 -}
961 -
962 -/**
963 - * Setup cron jobs on plugin activation
964 - */
965 -function mxchat_setup_cron_jobs() {
966 - // Clear any existing cron jobs first
967 - wp_clear_scheduled_hook('mxchat_reset_rate_limits');
968 -
969 - // Check if WordPress cron is disabled
970 - if (defined('DISABLE_WP_CRON') && DISABLE_WP_CRON) {
971 - // Set flag to use fallback system
972 - update_option('mxchat_use_fallback_rate_limits', true);
973 - update_option('mxchat_next_rate_limit_check', time() + 3600);
974 - return;
975 - }
976 -
977 - // Schedule the rate limit reset cron job
978 - $result = wp_schedule_event(time() + 300, 'hourly', 'mxchat_reset_rate_limits');
979 -
980 - if ($result === false) {
981 - // Fallback if scheduling fails
982 - update_option('mxchat_use_fallback_rate_limits', true);
983 - update_option('mxchat_next_rate_limit_check', time() + 3600);
984 - } else {
985 - // Clear fallback flags if cron scheduling succeeded
986 - delete_option('mxchat_use_fallback_rate_limits');
987 - }
988 -
989 - // Schedule transcript cleanup if configured (bucket dropdown OR custom retention-days > 0)
990 - $transcript_options = get_option('mxchat_transcripts_options', array());
991 - $cleanup_interval = isset($transcript_options['mxchat_auto_delete_transcripts']) ? $transcript_options['mxchat_auto_delete_transcripts'] : 'never';
992 - $custom_retention = isset($transcript_options['mxchat_retention_days']) ? (int) $transcript_options['mxchat_retention_days'] : 0;
993 -
994 - if ($cleanup_interval !== 'never' || $custom_retention > 0) {
995 - // Check if not already scheduled
996 - if (!wp_next_scheduled('mxchat_cleanup_old_transcripts')) {
997 - // Schedule to run daily at 3 AM
998 - $next_run = strtotime('tomorrow 3:00 AM');
999 - wp_schedule_event($next_run, 'daily', 'mxchat_cleanup_old_transcripts');
1000 - }
1001 - }
1002 -}
1003 -
1004 -/**
1005 - * Clean up on plugin deactivation
1006 - */
1007 -function mxchat_deactivate() {
1008 - // Clear scheduled cron jobs
1009 - wp_clear_scheduled_hook('mxchat_reset_rate_limits');
1010 - wp_clear_scheduled_hook('mxchat_cleanup_old_transcripts');
1011 - wp_clear_scheduled_hook('mxchat_send_delayed_transcript');
1012 -
1013 - // Clear fallback options
1014 - delete_option('mxchat_use_fallback_rate_limits');
1015 - delete_option('mxchat_next_rate_limit_check');
1016 - delete_option('mxchat_fallback_check_interval');
1017 -
1018 - // NOTE: We do NOT delete queue tables on deactivation
1019 - // This preserves data if user accidentally deactivates the plugin
1020 -}
1021 -
1022 -/**
1023 - * Check if fallback rate limit cleanup is needed
1024 - */
1025 -function mxchat_check_fallback_rate_limits() {
1026 - $use_fallback = get_option('mxchat_use_fallback_rate_limits', false);
1027 -
1028 - if (!$use_fallback) {
1029 - return;
1030 - }
1031 -
1032 - $next_check = get_option('mxchat_next_rate_limit_check', 0);
1033 -
1034 - if (time() >= $next_check) {
1035 - // Only run reset if the MxChat_Integrator class exists
1036 - if (class_exists('MxChat_Integrator')) {
1037 - $integrator = new MxChat_Integrator();
1038 - if (method_exists($integrator, 'mxchat_reset_rate_limits')) {
1039 - $integrator->mxchat_reset_rate_limits();
1040 - update_option('mxchat_next_rate_limit_check', time() + 3600);
1041 - }
1042 - }
1043 - }
1044 -}
1045 -
1046 -/**
1047 - * Robust update checking with role restriction migration, model deprecation, and queue tables
1048 - * CRITICAL: This runs on EVERY page load to ensure tables exist
1049 - */
1050 -function mxchat_check_for_update() {
1051 - global $wpdb;
1052 -
1053 - try {
1054 - $current_version = get_option('mxchat_plugin_version', '0.0.0');
1055 - $plugin_version = MXCHAT_VERSION;
1056 -
1057 - // Always ensure critical tables exist (even if version matches)
1058 - // This handles manual table deletion or fresh installs
1059 - $chat_table = $wpdb->prefix . 'mxchat_chat_transcripts';
1060 - $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
1061 -
1062 - $chat_exists = $wpdb->get_var("SHOW TABLES LIKE '$chat_table'") === $chat_table;
1063 - $queue_exists = $wpdb->get_var("SHOW TABLES LIKE '$queue_table'") === $queue_table;
1064 -
1065 - if (!$chat_exists || !$queue_exists) {
1066 - //error_log("MxChat: Critical tables missing, running activation");
1067 - mxchat_activate();
1068 - }
1069 -
1070 - // Version-specific migrations
1071 - if ($current_version !== $plugin_version) {
1072 - //error_log("MxChat: Version change detected: $current_version -> $plugin_version");
1073 -
1074 - // Run live agent update BEFORE updating the stored version
1075 - mxchat_handle_live_agent_update();
1076 -
1077 - // Run theme migration notice for 3.0.1 (AI theme CSS structure changes)
1078 - mxchat_handle_theme_migration_notice();
1079 -
1080 - // Run role restriction migration for 2.4.1
1081 - if (version_compare($current_version, '2.4.1', '<')) {
1082 - mxchat_add_role_restriction_column();
1083 - }
1084 -
1085 - // Run enabled_bots column migration for 2.4.4
1086 - if (version_compare($current_version, '2.4.4', '<')) {
1087 - mxchat_add_enabled_bots_column();
1088 - }
1089 -
1090 - // Run model migration for 2.5.1 (Claude deprecation)
1091 - if (version_compare($current_version, '2.5.1', '<')) {
1092 - mxchat_migrate_deprecated_models();
1093 - }
1094 -
1095 - // 2.5.2: Ensure queue tables exist and fix URL column sizes for all users upgrading to 2.5.2
1096 - if (version_compare($current_version, '2.5.2', '<')) {
1097 - mxchat_create_queue_tables();
1098 - mxchat_fix_url_column_size(); // NEW: Fix URL column size for long URLs
1099 - //error_log("MxChat: Queue tables created and URL columns updated for upgrade to 2.5.2");
1100 - }
1101 -
1102 - // 2.6.0: Ensure rag_context column exists for retrieved documents feature
1103 - if (version_compare($current_version, '2.6.0', '<')) {
1104 - $chat_table = $wpdb->prefix . 'mxchat_chat_transcripts';
1105 - mxchat_ensure_all_columns($chat_table);
1106 - //error_log("MxChat: rag_context column migration for 2.6.0");
1107 - }
1108 -
1109 - // 3.0.5: Migrate deprecated Gemini embedding model
1110 - if (version_compare($current_version, '3.0.5', '<')) {
1111 - mxchat_migrate_gemini_embedding_model();
1112 - }
1113 -
1114 - // 3.0.6: Migrate deprecated OpenAI and Claude models
1115 - if (version_compare($current_version, '3.0.6', '<')) {
1116 - mxchat_migrate_deprecated_models();
1117 - }
1118 -
1119 - // 3.1.2: Convert chat transcripts table to utf8mb4 for emoji support
1120 - if (version_compare($current_version, '3.1.2', '<')) {
1121 - mxchat_migrate_transcripts_charset();
1122 - }
1123 -
1124 - // 3.1.7: Clean up stale shared session email/name entries
1125 - if (version_compare($current_version, '3.1.7', '<')) {
1126 - delete_option('mxchat_email_null');
1127 - delete_option('mxchat_name_null');
1128 - }
1129 -
1130 - // 3.2.4: Backfill active embedding model option for the warning UI
1131 - // (replaces the per-row column tracking from 3.2.3, which was reverted)
1132 - if (version_compare($current_version, '3.2.4', '<')) {
1133 - mxchat_backfill_active_embedding_model();
1134 - }
1135 -
1136 - // Run full activation to ensure everything is up to date
1137 - mxchat_activate();
1138 -
1139 - // Run migration functions
1140 - mxchat_migrate_live_agent_status();
1141 -
1142 - // Add the cleanup function for version 2.1.8
1143 - if (version_compare($current_version, '2.1.8', '<')) {
1144 - $deleted = mxchat_cleanup_orphaned_chat_history();
1145 - }
1146 -
1147 - // Update version LAST
1148 - update_option('mxchat_plugin_version', $plugin_version);
1149 -
1150 - //error_log("MxChat: Updated from version $current_version to $plugin_version");
1151 - }
1152 -
1153 - } catch (Exception $e) {
1154 - //error_log('MxChat update error: ' . $e->getMessage());
1155 - // Don't update version if there was an error
1156 - }
1157 -}
1158 -
1159 -/**
1160 - * Ensure tables exist on every admin load for fresh installations
1161 - * This is a safety net for cases where activation hook doesn't fire
1162 - */
1163 -function mxchat_ensure_tables_exist() {
1164 - global $wpdb;
1165 -
1166 - // Only run for admin users to avoid performance impact
1167 - if (!current_user_can('administrator')) {
1168 - return;
1169 - }
1170 -
1171 - // Check if we've already verified tables in this session
1172 - static $tables_checked = false;
1173 - if ($tables_checked) {
1174 - return;
1175 - }
1176 - $tables_checked = true;
1177 -
1178 - $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
1179 - $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
1180 -
1181 - $chat_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
1182 - $queue_exists = $wpdb->get_var("SHOW TABLES LIKE '$queue_table'") === $queue_table;
1183 -
1184 - if (!$chat_exists || !$queue_exists) {
1185 - //error_log("MxChat: Tables missing on admin load, running activation");
1186 - mxchat_activate();
1187 - }
1188 -}
1189 -
1190 -/**
1191 - * Clean up orphaned chat history options from the wp_options table
1192 - * @return int Number of options deleted
1193 - */
1194 -function mxchat_cleanup_orphaned_chat_history() {
1195 - global $wpdb;
1196 - $count = 0;
1197 -
1198 - // Get all option keys that match our pattern
1199 - $history_options = $wpdb->get_results(
1200 - "SELECT option_name FROM {$wpdb->options}
1201 - WHERE option_name LIKE 'mxchat_history_%'"
1202 - );
1203 -
1204 - if (!empty($history_options)) {
1205 - foreach ($history_options as $option) {
1206 - // Extract the session ID from the option name
1207 - $session_id = str_replace('mxchat_history_', '', $option->option_name);
1208 -
1209 - // Check if this session still exists in the custom table
1210 - $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
1211 - $exists = $wpdb->get_var(
1212 - $wpdb->prepare(
1213 - "SELECT COUNT(*) FROM {$table_name} WHERE session_id = %s",
1214 - $session_id
1215 - )
1216 - );
1217 -
1218 - // If session doesn't exist in the main table, delete the option
1219 - if ($exists == 0) {
1220 - delete_option($option->option_name);
1221 - // Also delete related metadata
1222 - delete_option("mxchat_email_{$session_id}");
1223 - delete_option("mxchat_name_{$session_id}");
1224 - delete_option("mxchat_agent_name_{$session_id}");
1225 - $count++;
1226 - }
1227 - }
1228 - }
1229 -
1230 - return $count;
1231 -}
1232 -
1233 -function mxchat_migrate_live_agent_status() {
1234 - $options = get_option('mxchat_options', []);
1235 -
1236 - // Check if live_agent_status exists
1237 - if (isset($options['live_agent_status'])) {
1238 - $current_status = $options['live_agent_status'];
1239 - $needs_update = false;
1240 -
1241 - // Convert to new format if needed
1242 - if ($current_status === 'online') {
1243 - $options['live_agent_status'] = 'on';
1244 - $needs_update = true;
1245 - } else if ($current_status === 'offline') {
1246 - $options['live_agent_status'] = 'off';
1247 - $needs_update = true;
1248 - } else if (!in_array($current_status, ['on', 'off'])) {
1249 - // Default to off for any unexpected values
1250 - $options['live_agent_status'] = 'off';
1251 - $needs_update = true;
1252 - }
1253 -
1254 - // Only update if needed
1255 - if ($needs_update) {
1256 - update_option('mxchat_options', $options);
1257 - }
1258 - } else {
1259 - // If status doesn't exist, set default to off
1260 - $options['live_agent_status'] = 'off';
1261 - update_option('mxchat_options', $options);
1262 - }
1263 -}
1264 -
1265 -function mxchat_handle_live_agent_update() {
1266 - // Get the CURRENT stored version (before it gets updated)
1267 - $current_version = get_option('mxchat_plugin_version', '0.0.0');
1268 - $new_version = '2.2.2';
1269 -
1270 - // Only run this once for the update to 2.2.2
1271 - $update_handled = get_option('mxchat_live_agent_update_2_2_2_handled', false);
1272 -
1273 - // Check if we're upgrading TO 2.2.2 and haven't handled this yet
1274 - if (version_compare($current_version, $new_version, '<') && !$update_handled) {
1275 - $options = get_option('mxchat_options', array());
1276 -
1277 - // Check if live agent was previously enabled
1278 - if (isset($options['live_agent_status']) && $options['live_agent_status'] === 'on') {
1279 - // Disable live agent
1280 - $options['live_agent_status'] = 'off';
1281 - update_option('mxchat_options', $options);
1282 -
1283 - // Set flag to show the notification banner
1284 - update_option('mxchat_show_live_agent_disabled_notice', true);
1285 - }
1286 -
1287 - // Mark this update as handled
1288 - update_option('mxchat_live_agent_update_2_2_2_handled', true);
1289 - }
1290 -}
1291 -
1292 -/**
1293 - * Handle theme migration notice for version 3.0.1
1294 - * Shows a dismissible notice to Pro users about migrating AI-generated themes
1295 - */
1296 -function mxchat_handle_theme_migration_notice() {
1297 - // Get the CURRENT stored version (before it gets updated)
1298 - $current_version = get_option('mxchat_plugin_version', '0.0.0');
1299 - $target_version = '3.0.1';
1300 -
1301 - // Only run this once for the update to 3.0.1
1302 - $update_handled = get_option('mxchat_theme_migration_update_3_0_1_handled', false);
1303 -
1304 - // Check if we're upgrading TO 3.0.1 and haven't handled this yet
1305 - if (version_compare($current_version, $target_version, '<') && !$update_handled) {
1306 - // Check if Pro is activated - only show to Pro users
1307 - $license_status = get_option('mxchat_license_status', 'inactive');
1308 - $is_pro = ($license_status === 'active');
1309 -
1310 - if ($is_pro) {
1311 - // Set flag to show the theme migration notification banner
1312 - update_option('mxchat_show_theme_migration_notice', true);
1313 - }
1314 -
1315 - // Mark this update as handled (whether Pro or not)
1316 - update_option('mxchat_theme_migration_update_3_0_1_handled', true);
1317 - }
1318 -}
1319 -
1320 -// Initialize plugin safely
1321 -function mxchat_init() {
1322 - // Include all class files first
1323 - mxchat_include_classes();
1324 -
1325 - // Run update check (this also ensures tables exist)
1326 - mxchat_check_for_update();
1327 -
1328 - // CRITICAL: Ensure tables exist on admin pages (safety net)
1329 - add_action('admin_init', 'mxchat_ensure_tables_exist', 1);
1330 -
1331 - // Add fallback rate limit check
1332 - add_action('init', 'mxchat_check_fallback_rate_limits', 5);
1333 -
1334 - // Add migration notice hook
1335 - add_action('admin_notices', 'mxchat_show_migration_notice');
1336 -
1337 - // Initialize classes with error handling
1338 - try {
1339 - // Initialize admin classes
1340 - if (is_admin()) {
1341 - if (class_exists('MxChat_Knowledge_Manager')) {
1342 - $mxchat_knowledge_manager = new MxChat_Knowledge_Manager();
1343 -
1344 - if (class_exists('MxChat_Admin')) {
1345 - $mxchat_admin = new MxChat_Admin($mxchat_knowledge_manager);
1346 - }
1347 - }
1348 -
1349 - // Initialize meta box class
1350 - if (class_exists('MxChat_Meta_Box')) {
1351 - new MxChat_Meta_Box();
1352 - }
1353 -
1354 - }
1355 -
1356 - // Initialize content generator globally — it registers wp_head hook
1357 - // for frontend CSS injection, plus wp_ajax_ hooks for admin.
1358 - if (class_exists('MxChat_Content_Generator')) {
1359 - new MxChat_Content_Generator();
1360 - }
1361 -
1362 - // Initialize REST API globally — endpoints must be registered on
1363 - // every request (admin and frontend) so they're reachable via /wp-json/.
1364 - // Endpoints are auth-gated and locked until the site owner generates
1365 - // a token in MxChat → API Access.
1366 - if (class_exists('MxChat_Rest_Api')) {
1367 - new MxChat_Rest_Api();
1368 - }
1369 -
1370 - // Initialize public classes
1371 - if (class_exists('MxChat_Public')) {
1372 - $mxchat_public = new MxChat_Public();
1373 - }
1374 -
1375 - if (class_exists('MxChat_Integrator')) {
1376 - global $mxchat_integrator;
1377 - $mxchat_integrator = new MxChat_Integrator();
1378 - }
1379 -
1380 - } catch (Exception $e) {
1381 - //error_log('MxChat initialization error: ' . $e->getMessage());
1382 -
1383 - // Show admin notice if there's an error
1384 - if (is_admin()) {
1385 - add_action('admin_notices', function() use ($e) {
1386 - echo '<div class="notice notice-error"><p>';
1387 - echo '<strong>MxChat Error:</strong> Plugin initialization failed. ';
1388 - echo 'Please check error logs or contact support. Error: ' . esc_html($e->getMessage());
1389 - echo '</p></div>';
1390 - });
1391 - }
1392 - }
1393 -}
1394 -
1395 -// Run initialization on plugins_loaded
1396 -add_action('plugins_loaded', 'mxchat_init');
1397 -
1398 -// Run migration check on admin init (for auto-updates without reactivation)
1399 -add_action('admin_init', 'mxchat_check_and_run_migrations');
1400 -
1401 -/**
1402 - * Check and run migrations on admin init
1403 - * This ensures migrations run even when plugin is auto-updated
1404 - */
1405 -function mxchat_check_and_run_migrations() {
1406 - // Only run in admin and not on every request
1407 - static $checked = false;
1408 - if ($checked) {
1409 - return;
1410 - }
1411 - $checked = true;
1412 -
1413 - mxchat_migrate_pinecone_roles_add_bot_id();
1414 - mxchat_migrate_add_content_type_column();
1415 - mxchat_migrate_add_translations_table();
1416 -}
1417 -
1418 -/**
1419 - * Migration: Create transcript translations table (v3.0.4)
1420 - * For users upgrading from versions before 3.0.4
1421 - */
1422 -function mxchat_migrate_add_translations_table() {
1423 - $migration_key = 'mxchat_translations_table_created';
1424 -
1425 - // Check if migration already ran
1426 - if (get_option($migration_key)) {
1427 - return;
1428 - }
1429 -
1430 - // Create the translations table
1431 - mxchat_create_translations_table();
1432 -
1433 - // Mark migration as complete
1434 - update_option($migration_key, '3.0.4');
1435 -}
1436 -
1437 -/**
1438 - * Migration: Update deprecated Gemini embedding model (v3.0.5)
1439 - * Updates gemini-embedding-exp-03-07 to gemini-embedding-001 for users who had it selected
1440 - */
1441 -function mxchat_migrate_gemini_embedding_model() {
1442 - $options = get_option('mxchat_options', array());
1443 -
1444 - if (isset($options['embedding_model']) && $options['embedding_model'] === 'gemini-embedding-exp-03-07') {
1445 - $options['embedding_model'] = 'gemini-embedding-001';
1446 - update_option('mxchat_options', $options);
1447 - }
1448 -}
1449 -
1450 -// Register activation hook
1451 -register_activation_hook(__FILE__, 'mxchat_activate');
1452 -
1453 -// Add cron schedule
1454 -add_filter('cron_schedules', function($schedules) {
1455 - $schedules['one_minute'] = array(
1456 - 'interval' => 60,
1457 - 'display' => 'Every Minute'
1458 - );
1459 - return $schedules;
1460 -});
1461 -
1462 -// Register deactivation hook
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: 3.0.7
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 +// Include classes with error handling
43 +function mxchat_include_classes() {
44 + $class_files = array(
45 + 'includes/class-mxchat-integrator.php',
46 + 'includes/class-mxchat-admin.php',
47 + 'includes/class-mxchat-public.php',
48 + 'includes/class-mxchat-utils.php',
49 + 'includes/class-mxchat-user.php',
50 + 'includes/class-mxchat-meta-box.php',
51 + 'includes/class-mxchat-chunker.php',
52 + 'includes/pdf-parser/alt_autoload.php',
53 + 'includes/class-mxchat-word-handler.php',
54 + 'admin/class-ajax-handler.php',
55 + 'admin/class-pinecone-manager.php',
56 + 'admin/class-knowledge-manager.php'
57 + );
58 +
59 + foreach ($class_files as $file) {
60 + $file_path = plugin_dir_path(__FILE__) . $file;
61 + if (file_exists($file_path)) {
62 + require_once $file_path;
63 + } else {
64 + //error_log('MxChat: Missing class file - ' . $file);
65 + }
66 + }
67 +}
68 +
69 +/**
70 + * Create URL click tracking table
71 + */
72 +function mxchat_create_url_clicks_table() {
73 + global $wpdb;
74 +
75 + $table_name = $wpdb->prefix . 'mxchat_url_clicks';
76 +
77 + $charset_collate = $wpdb->get_charset_collate();
78 +
79 + $sql = "CREATE TABLE $table_name (
80 + id mediumint(9) NOT NULL AUTO_INCREMENT,
81 + session_id varchar(100) NOT NULL,
82 + clicked_url text NOT NULL,
83 + message_context text,
84 + click_timestamp datetime DEFAULT CURRENT_TIMESTAMP,
85 + user_ip varchar(45),
86 + user_agent text,
87 + PRIMARY KEY (id),
88 + KEY session_id (session_id),
89 + KEY click_timestamp (click_timestamp)
90 + ) $charset_collate;";
91 +
92 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
93 + dbDelta($sql);
94 +}
95 +
96 +/**
97 + * FIXED: Robust table creation and column management
98 + */
99 +function mxchat_create_chat_transcripts_table() {
100 + global $wpdb;
101 +
102 + $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
103 + $charset_collate = $wpdb->get_charset_collate();
104 +
105 + // Create table with ALL columns including user_name from the start
106 + $sql = "CREATE TABLE $table_name (
107 + id MEDIUMINT(9) NOT NULL AUTO_INCREMENT,
108 + user_id MEDIUMINT(9) DEFAULT 0,
109 + session_id VARCHAR(255) NOT NULL,
110 + role VARCHAR(255) NOT NULL,
111 + message TEXT NOT NULL,
112 + user_email VARCHAR(255) DEFAULT NULL,
113 + user_name VARCHAR(100) DEFAULT NULL,
114 + user_identifier VARCHAR(255) DEFAULT NULL,
115 + originating_page_url TEXT DEFAULT NULL,
116 + originating_page_title VARCHAR(500) DEFAULT NULL,
117 + timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
118 + PRIMARY KEY (id),
119 + KEY session_id (session_id),
120 + KEY user_email (user_email),
121 + KEY timestamp (timestamp)
122 + ) $charset_collate;";
123 +
124 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
125 + $result = dbDelta($sql);
126 +
127 + // Log the result for debugging
128 + if (empty($result)) {
129 + //error_log("MxChat: dbDelta returned empty result for chat transcripts table");
130 + } else {
131 + //error_log("MxChat: dbDelta result: " . print_r($result, true));
132 + }
133 +
134 + // IMPORTANT: Ensure all columns exist for existing installations
135 + mxchat_ensure_all_columns($table_name);
136 +}
137 +
138 +/**
139 + * Ensure all required columns exist (for upgrades)
140 + */
141 +function mxchat_ensure_all_columns($table_name) {
142 + global $wpdb;
143 +
144 + // First check if table exists
145 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
146 + if (!$table_exists) {
147 + //error_log("MxChat: Table $table_name does not exist, cannot add columns");
148 + return;
149 + }
150 +
151 + // Define all required columns and their types
152 + $required_columns = [
153 + 'user_identifier' => 'VARCHAR(255) DEFAULT NULL',
154 + 'user_email' => 'VARCHAR(255) DEFAULT NULL',
155 + 'user_name' => 'VARCHAR(100) DEFAULT NULL',
156 + 'originating_page_url' => 'TEXT DEFAULT NULL',
157 + 'originating_page_title' => 'VARCHAR(500) DEFAULT NULL',
158 + 'rag_context' => 'LONGTEXT DEFAULT NULL'
159 + ];
160 +
161 + // Get existing columns
162 + $existing_columns = $wpdb->get_results("SHOW COLUMNS FROM $table_name");
163 + if (empty($existing_columns)) {
164 + //error_log("MxChat: Could not get columns for table $table_name");
165 + return;
166 + }
167 +
168 + $existing_column_names = array_column($existing_columns, 'Field');
169 +
170 + // Add missing columns
171 + foreach ($required_columns as $column_name => $column_definition) {
172 + if (!in_array($column_name, $existing_column_names)) {
173 + $alter_sql = "ALTER TABLE $table_name ADD COLUMN $column_name $column_definition";
174 + $result = $wpdb->query($alter_sql);
175 +
176 + if ($result === false) {
177 + //error_log("MxChat: Failed to add column $column_name to $table_name. Error: " . $wpdb->last_error);
178 + } else {
179 + //error_log("MxChat: Successfully added column $column_name to $table_name");
180 + }
181 + }
182 + }
183 +}
184 +
185 +/**
186 + * Add role restriction column to knowledge base table
187 + */
188 +function mxchat_add_role_restriction_column() {
189 + global $wpdb;
190 + $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
191 +
192 + // Check if table exists first
193 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
194 + if (!$table_exists) {
195 + //error_log("MxChat: System prompt content table does not exist, cannot add role_restriction column");
196 + return;
197 + }
198 +
199 + // Check if column already exists
200 + $column_exists = $wpdb->get_results(
201 + $wpdb->prepare(
202 + "SHOW COLUMNS FROM {$table_name} LIKE %s",
203 + 'role_restriction'
204 + )
205 + );
206 +
207 + if (empty($column_exists)) {
208 + $alter_sql = "ALTER TABLE {$table_name} ADD COLUMN role_restriction VARCHAR(50) DEFAULT 'public' AFTER source_url";
209 + $result = $wpdb->query($alter_sql);
210 +
211 + if ($result === false) {
212 + //error_log("MxChat: Failed to add role_restriction column. Error: " . $wpdb->last_error);
213 + } else {
214 + //error_log("MxChat: Successfully added role_restriction column");
215 +
216 + // Set all existing records to 'public' (everyone can access)
217 + $update_result = $wpdb->query(
218 + "UPDATE {$table_name}
219 + SET role_restriction = 'public'
220 + WHERE role_restriction IS NULL OR role_restriction = ''"
221 + );
222 +
223 + if ($update_result !== false) {
224 + //error_log("MxChat: Updated {$update_result} existing records to public access");
225 + }
226 + }
227 + }
228 +}
229 +
230 +/**
231 + * Add enabled_bots column to intents table for multi-bot action filtering
232 + */
233 +function mxchat_add_enabled_bots_column() {
234 + global $wpdb;
235 + $table_name = $wpdb->prefix . 'mxchat_intents';
236 +
237 + // Check if table exists first
238 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
239 + if (!$table_exists) {
240 + //error_log("MxChat: Intents table does not exist, cannot add enabled_bots column");
241 + return;
242 + }
243 +
244 + // Check if column already exists
245 + $column_exists = $wpdb->get_results(
246 + $wpdb->prepare(
247 + "SHOW COLUMNS FROM {$table_name} LIKE %s",
248 + 'enabled_bots'
249 + )
250 + );
251 +
252 + if (empty($column_exists)) {
253 + $alter_sql = "ALTER TABLE {$table_name} ADD COLUMN enabled_bots LONGTEXT DEFAULT NULL AFTER enabled";
254 + $result = $wpdb->query($alter_sql);
255 +
256 + if ($result === false) {
257 + //error_log("MxChat: Failed to add enabled_bots column. Error: " . $wpdb->last_error);
258 + } else {
259 + //error_log("MxChat: Successfully added enabled_bots column");
260 +
261 + // Set all existing actions to work with 'default' bot for backward compatibility
262 + $default_bots = json_encode(['default']);
263 + $update_result = $wpdb->query(
264 + $wpdb->prepare(
265 + "UPDATE {$table_name}
266 + SET enabled_bots = %s
267 + WHERE enabled_bots IS NULL OR enabled_bots = ''",
268 + $default_bots
269 + )
270 + );
271 +
272 + if ($update_result !== false) {
273 + //error_log("MxChat: Updated {$update_result} existing actions to work with default bot");
274 + }
275 + }
276 + }
277 +}
278 +
279 +/**
280 + * Create Pinecone role restrictions table with multi-bot support
281 + */
282 +function mxchat_create_pinecone_roles_table() {
283 + global $wpdb;
284 +
285 + $table_name = $wpdb->prefix . 'mxchat_pinecone_roles';
286 + $charset_collate = $wpdb->get_charset_collate();
287 +
288 + $sql = "CREATE TABLE $table_name (
289 + id mediumint(9) NOT NULL AUTO_INCREMENT,
290 + vector_id varchar(255) NOT NULL,
291 + bot_id varchar(50) NOT NULL DEFAULT 'default',
292 + source_url text,
293 + role_restriction varchar(50) DEFAULT 'public',
294 + updated_at timestamp DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
295 + PRIMARY KEY (id),
296 + UNIQUE KEY vector_bot (vector_id, bot_id),
297 + KEY role_restriction (role_restriction),
298 + KEY bot_id (bot_id)
299 + ) $charset_collate;";
300 +
301 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
302 + dbDelta($sql);
303 +}
304 +
305 +/**
306 + * Add bot_id column to mxchat_pinecone_roles table for multi-bot support
307 + * This migration runs once to update existing installations
308 + */
309 +function mxchat_migrate_pinecone_roles_add_bot_id() {
310 + global $wpdb;
311 +
312 + // Check if migration already ran
313 + $migration_version = get_option('mxchat_pinecone_roles_migration_version', '0');
314 + if (version_compare($migration_version, '2.5.2', '>=')) {
315 + return; // Already migrated
316 + }
317 +
318 + $table_name = $wpdb->prefix . 'mxchat_pinecone_roles';
319 +
320 + // Check if table exists
321 + if ($wpdb->get_var("SHOW TABLES LIKE '{$table_name}'") != $table_name) {
322 + return; // Table doesn't exist yet
323 + }
324 +
325 + // Check if bot_id column already exists
326 + $column_exists = $wpdb->get_results("SHOW COLUMNS FROM {$table_name} LIKE 'bot_id'");
327 +
328 + if (empty($column_exists)) {
329 + // Add bot_id column
330 + $wpdb->query("ALTER TABLE {$table_name} ADD COLUMN bot_id VARCHAR(50) NOT NULL DEFAULT 'default' AFTER vector_id");
331 +
332 + // Update the unique key to include bot_id
333 + $wpdb->query("ALTER TABLE {$table_name} DROP INDEX vector_id");
334 + $wpdb->query("ALTER TABLE {$table_name} ADD UNIQUE KEY vector_bot (vector_id, bot_id)");
335 +
336 + // Add index for bot_id
337 + $wpdb->query("ALTER TABLE {$table_name} ADD KEY bot_id (bot_id)");
338 +
339 + error_log('MxChat: Successfully added bot_id column to mxchat_pinecone_roles table');
340 + }
341 +
342 + // Mark migration as complete
343 + update_option('mxchat_pinecone_roles_migration_version', '2.5.2');
344 +}
345 +
346 +/**
347 + * 2.5.6: Add content_type column to mxchat_system_prompt_content table
348 + * Enables filtering knowledge base by content type (posts, pages, PDFs, etc.)
349 + */
350 +function mxchat_migrate_add_content_type_column() {
351 + global $wpdb;
352 +
353 + // Check if migration already ran
354 + $migration_version = get_option('mxchat_content_type_migration_version', '0');
355 + if (version_compare($migration_version, '2.5.6', '>=')) {
356 + return;
357 + }
358 +
359 + $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
360 +
361 + // Check if table exists
362 + if ($wpdb->get_var("SHOW TABLES LIKE '{$table_name}'") != $table_name) {
363 + return;
364 + }
365 +
366 + // Check if content_type column already exists
367 + $column_exists = $wpdb->get_results("SHOW COLUMNS FROM {$table_name} LIKE 'content_type'");
368 +
369 + if (empty($column_exists)) {
370 + // Add content_type column with default value 'content' for backwards compatibility
371 + $wpdb->query("ALTER TABLE {$table_name} ADD COLUMN content_type VARCHAR(50) DEFAULT 'content' AFTER role_restriction");
372 +
373 + // Add index for better query performance
374 + $wpdb->query("ALTER TABLE {$table_name} ADD KEY content_type (content_type)");
375 +
376 + error_log('MxChat: Successfully added content_type column to mxchat_system_prompt_content table');
377 + }
378 +
379 + // Mark migration as complete
380 + update_option('mxchat_content_type_migration_version', '2.5.6');
381 +}
382 +
383 +/**
384 + * 2.5.2: Create queue processing tables for reliable background processing
385 + */
386 +function mxchat_create_queue_tables() {
387 + global $wpdb;
388 + $charset_collate = $wpdb->get_charset_collate();
389 +
390 + // Main queue table
391 + $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
392 + $sql_queue = "CREATE TABLE $queue_table (
393 + id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
394 + queue_id varchar(64) NOT NULL,
395 + item_type varchar(20) NOT NULL,
396 + item_data longtext NOT NULL,
397 + status varchar(20) NOT NULL DEFAULT 'pending',
398 + bot_id varchar(50) NOT NULL DEFAULT 'default',
399 + priority int(11) NOT NULL DEFAULT 0,
400 + attempts int(11) NOT NULL DEFAULT 0,
401 + max_attempts int(11) NOT NULL DEFAULT 3,
402 + error_message text DEFAULT NULL,
403 + created_at datetime NOT NULL,
404 + started_at datetime DEFAULT NULL,
405 + completed_at datetime DEFAULT NULL,
406 + PRIMARY KEY (id),
407 + KEY queue_id (queue_id),
408 + KEY status (status),
409 + KEY item_type (item_type),
410 + KEY priority (priority)
411 + ) $charset_collate;";
412 +
413 + // Queue metadata table
414 + $meta_table = $wpdb->prefix . 'mxchat_queue_meta';
415 + $sql_meta = "CREATE TABLE $meta_table (
416 + id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
417 + queue_id varchar(64) NOT NULL,
418 + meta_key varchar(255) NOT NULL,
419 + meta_value longtext,
420 + PRIMARY KEY (id),
421 + KEY queue_id (queue_id),
422 + KEY meta_key (meta_key)
423 + ) $charset_collate;";
424 +
425 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
426 + dbDelta($sql_queue);
427 + dbDelta($sql_meta);
428 +
429 + //error_log("MxChat: Queue tables created/updated successfully");
430 +}
431 +
432 +/**
433 + * Create transcript translations table for persisting translations
434 + */
435 +function mxchat_create_translations_table() {
436 + global $wpdb;
437 + $charset_collate = $wpdb->get_charset_collate();
438 +
439 + $table_name = $wpdb->prefix . 'mxchat_transcript_translations';
440 + $sql = "CREATE TABLE $table_name (
441 + id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
442 + session_id varchar(255) NOT NULL,
443 + language_code varchar(10) NOT NULL,
444 + translations longtext NOT NULL,
445 + created_at datetime NOT NULL,
446 + updated_at datetime NOT NULL,
447 + PRIMARY KEY (id),
448 + UNIQUE KEY session_lang (session_id, language_code),
449 + KEY session_id (session_id)
450 + ) $charset_collate;";
451 +
452 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
453 + dbDelta($sql);
454 +}
455 +
456 +/**
457 + * 2.5.2: Fix URL column size to support long URLs (especially with UTF-8 encoding)
458 + * This fixes "url, source_url. The supplied values may be too long" errors
459 + */
460 +function mxchat_fix_url_column_size() {
461 + global $wpdb;
462 + $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
463 +
464 + // Check if table exists
465 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
466 + if (!$table_exists) {
467 + return;
468 + }
469 +
470 + // Change url and source_url from VARCHAR to TEXT to handle long URLs
471 + // This is especially important for URLs with UTF-8 encoded characters (Hebrew, Arabic, etc.)
472 + $wpdb->query("ALTER TABLE {$table_name} MODIFY COLUMN url TEXT");
473 + $wpdb->query("ALTER TABLE {$table_name} MODIFY COLUMN source_url TEXT");
474 +
475 + //error_log("MxChat: Successfully updated url and source_url columns to TEXT type for long URL support");
476 +}
477 +
478 +/**
479 + * Migrate deprecated AI models to their replacements
480 + * Version 2.5.1: Migrate Claude 3.5 Sonnet (deprecated) to Claude 3.7 Sonnet
481 + * Version 3.0.55: Migrate GPT-4 series models (deprecated 2026-02-17) to GPT-5 series
482 + */
483 +function mxchat_migrate_deprecated_models() {
484 + $options = get_option('mxchat_options', array());
485 + $migrated = false;
486 + $migration_message = '';
487 +
488 + if (!isset($options['model'])) {
489 + return;
490 + }
491 +
492 + $current_model = $options['model'];
493 +
494 + // Migrate deprecated Claude models to Claude Opus 4.6 (recommended replacement per Anthropic)
495 + $deprecated_claude_models = array(
496 + 'claude-3-5-sonnet-20240620', // Retired Oct 28, 2025
497 + 'claude-3-5-sonnet-20241022', // Retired Oct 28, 2025
498 + 'claude-3-7-sonnet-20250219', // Retiring Feb 19, 2026
499 + 'claude-3-opus-20240229', // Retired Jan 5, 2026
500 + 'claude-3-sonnet-20240229', // Legacy
501 + 'claude-3-haiku-20240307', // Legacy
502 + );
503 + if (in_array($current_model, $deprecated_claude_models, true)) {
504 + $options['model'] = 'claude-opus-4-6';
505 + $migrated = true;
506 + $migration_message = sprintf(
507 + __('Your chatbot model has been automatically updated from %s to Claude Opus 4.6 due to Anthropic deprecating older Claude models.', 'mxchat'),
508 + $current_model
509 + );
510 + }
511 +
512 + // Migrate deprecated Claude Haiku 3.5 to Claude Haiku 4.5
513 + if ($current_model === 'claude-3-5-haiku-20241022') {
514 + $options['model'] = 'claude-haiku-4-5-20251001';
515 + $migrated = true;
516 + $migration_message = __('Your chatbot model has been automatically updated from Claude Haiku 3.5 to Claude Haiku 4.5 due to Anthropic deprecating the older model.', 'mxchat');
517 + }
518 +
519 + // Migrate deprecated GPT-4 series and GPT-3.5 Turbo to GPT-5.1 Chat Latest
520 + if (in_array($current_model, array('gpt-4o', 'gpt-4.1-2025-04-14', 'gpt-4-turbo', 'gpt-4', 'gpt-3.5-turbo'), true)) {
521 + $options['model'] = 'gpt-5.1-chat-latest';
522 + $migrated = true;
523 + $migration_message = sprintf(
524 + __('Your chatbot model has been automatically updated from %s to GPT-5.1 Chat Latest due to OpenAI deprecating older models.', 'mxchat'),
525 + $current_model
526 + );
527 + }
528 +
529 + // Migrate deprecated GPT-4o Mini and GPT-4.1 Mini to GPT-5 Mini
530 + if (in_array($current_model, array('gpt-4o-mini', 'gpt-4.1-mini'), true)) {
531 + $options['model'] = 'gpt-5-mini';
532 + $migrated = true;
533 + $migration_message = sprintf(
534 + __('Your chatbot model has been automatically updated from %s to GPT-5 Mini due to OpenAI deprecating GPT-4 series models.', 'mxchat'),
535 + $current_model
536 + );
537 + }
538 +
539 + if ($migrated) {
540 + update_option('mxchat_options', $options);
541 + update_option('mxchat_model_migrated_notice', true);
542 + update_option('mxchat_model_migration_message', $migration_message);
543 + }
544 +}
545 +
546 +/**
547 + * Show admin notice after model migration
548 + */
549 +function mxchat_show_migration_notice() {
550 + if (get_option('mxchat_model_migrated_notice')) {
551 + $migration_message = get_option('mxchat_model_migration_message', __('Your chatbot model has been automatically updated due to a model deprecation.', 'mxchat'));
552 + ?>
553 + <div class="notice notice-info is-dismissible">
554 + <p>
555 + <strong><?php esc_html_e('MxChat Model Updated', 'mxchat'); ?></strong><br>
556 + <?php echo esc_html($migration_message); ?>
557 + </p>
558 + </div>
559 + <?php
560 + delete_option('mxchat_model_migrated_notice');
561 + delete_option('mxchat_model_migration_message');
562 + }
563 +}
564 +
565 +function mxchat_activate() {
566 + global $wpdb;
567 + $charset_collate = $wpdb->get_charset_collate();
568 +
569 + //error_log("MxChat: Running activation function");
570 +
571 + // Create chat transcripts table with improved function
572 + mxchat_create_chat_transcripts_table();
573 +
574 + // System Prompt Content Table - UPDATED: Use TEXT for url and source_url columns
575 + $system_prompt_table = $wpdb->prefix . 'mxchat_system_prompt_content';
576 + $sql_system_prompt = "CREATE TABLE $system_prompt_table (
577 + id MEDIUMINT(9) NOT NULL AUTO_INCREMENT,
578 + url TEXT NOT NULL,
579 + article_content LONGTEXT NOT NULL,
580 + embedding_vector LONGTEXT,
581 + source_url TEXT DEFAULT NULL,
582 + role_restriction VARCHAR(50) DEFAULT 'public',
583 + content_type VARCHAR(50) DEFAULT 'content',
584 + timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
585 + PRIMARY KEY (id),
586 + KEY content_type (content_type)
587 + ) $charset_collate;";
588 +
589 + // Intents Table - NOW INCLUDES enabled_bots column from the start
590 + $intents_table = $wpdb->prefix . 'mxchat_intents';
591 + $sql_intents_table = "CREATE TABLE $intents_table (
592 + id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
593 + intent_label VARCHAR(255) NOT NULL,
594 + phrases TEXT NOT NULL,
595 + embedding_vector LONGTEXT NOT NULL,
596 + callback_function VARCHAR(255) NOT NULL,
597 + similarity_threshold FLOAT DEFAULT 0.85,
598 + enabled TINYINT(1) NOT NULL DEFAULT 1,
599 + enabled_bots LONGTEXT DEFAULT NULL,
600 + PRIMARY KEY (id)
601 + ) $charset_collate;";
602 +
603 + require_once ABSPATH . 'wp-admin/includes/upgrade.php';
604 +
605 + // Create other tables
606 + dbDelta($sql_system_prompt);
607 + dbDelta($sql_intents_table);
608 +
609 + // Create URL click tracking table
610 + mxchat_create_url_clicks_table();
611 +
612 + // Create Pinecone roles table
613 + mxchat_create_pinecone_roles_table();
614 +
615 + // NEW 2.5.2: Create queue processing tables
616 + mxchat_create_queue_tables();
617 +
618 + // Create transcript translations table
619 + mxchat_create_translations_table();
620 +
621 + // Ensure additional columns in system prompt table
622 + $existing_system_columns = $wpdb->get_results("SHOW COLUMNS FROM $system_prompt_table");
623 + if (!empty($existing_system_columns)) {
624 + $existing_system_column_names = array_column($existing_system_columns, 'Field');
625 +
626 + if (!in_array('embedding_vector', $existing_system_column_names)) {
627 + $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN embedding_vector LONGTEXT");
628 + }
629 + if (!in_array('source_url', $existing_system_column_names)) {
630 + $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN source_url TEXT DEFAULT NULL");
631 + }
632 + if (!in_array('role_restriction', $existing_system_column_names)) {
633 + $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN role_restriction VARCHAR(50) DEFAULT 'public' AFTER source_url");
634 + }
635 + }
636 +
637 + // Set default thresholds for existing intents
638 + $wpdb->query("UPDATE {$intents_table} SET similarity_threshold = 0.85 WHERE similarity_threshold IS NULL");
639 +
640 + // Ensure enabled column exists in intents table
641 + $existing_intent_columns = $wpdb->get_results("SHOW COLUMNS FROM $intents_table");
642 + if (!empty($existing_intent_columns)) {
643 + $existing_intent_column_names = array_column($existing_intent_columns, 'Field');
644 +
645 + if (!in_array('enabled', $existing_intent_column_names)) {
646 + $wpdb->query("ALTER TABLE $intents_table ADD COLUMN enabled TINYINT(1) NOT NULL DEFAULT 1");
647 + }
648 +
649 + // Ensure enabled_bots column exists for existing installations
650 + if (!in_array('enabled_bots', $existing_intent_column_names)) {
651 + $wpdb->query("ALTER TABLE $intents_table ADD COLUMN enabled_bots LONGTEXT DEFAULT NULL AFTER enabled");
652 +
653 + // Set existing actions to work with default bot
654 + $default_bots = json_encode(['default']);
655 + $wpdb->query($wpdb->prepare(
656 + "UPDATE {$intents_table} SET enabled_bots = %s WHERE enabled_bots IS NULL",
657 + $default_bots
658 + ));
659 + }
660 + }
661 +
662 + // Run migration for existing installations
663 + mxchat_migrate_pinecone_roles_add_bot_id();
664 +
665 + // Setup cron jobs
666 + mxchat_setup_cron_jobs();
667 +
668 + // Update version
669 + update_option('mxchat_plugin_version', MXCHAT_VERSION);
670 +
671 + //error_log("MxChat: Activation function completed");
672 +}
673 +
674 +/**
675 + * Setup cron jobs on plugin activation
676 + */
677 +function mxchat_setup_cron_jobs() {
678 + // Clear any existing cron jobs first
679 + wp_clear_scheduled_hook('mxchat_reset_rate_limits');
680 +
681 + // Check if WordPress cron is disabled
682 + if (defined('DISABLE_WP_CRON') && DISABLE_WP_CRON) {
683 + // Set flag to use fallback system
684 + update_option('mxchat_use_fallback_rate_limits', true);
685 + update_option('mxchat_next_rate_limit_check', time() + 3600);
686 + return;
687 + }
688 +
689 + // Schedule the rate limit reset cron job
690 + $result = wp_schedule_event(time() + 300, 'hourly', 'mxchat_reset_rate_limits');
691 +
692 + if ($result === false) {
693 + // Fallback if scheduling fails
694 + update_option('mxchat_use_fallback_rate_limits', true);
695 + update_option('mxchat_next_rate_limit_check', time() + 3600);
696 + } else {
697 + // Clear fallback flags if cron scheduling succeeded
698 + delete_option('mxchat_use_fallback_rate_limits');
699 + }
700 +
701 + // Schedule transcript cleanup if configured
702 + $transcript_options = get_option('mxchat_transcripts_options', array());
703 + $cleanup_interval = isset($transcript_options['mxchat_auto_delete_transcripts']) ? $transcript_options['mxchat_auto_delete_transcripts'] : 'never';
704 +
705 + if ($cleanup_interval !== 'never') {
706 + // Check if not already scheduled
707 + if (!wp_next_scheduled('mxchat_cleanup_old_transcripts')) {
708 + // Schedule to run daily at 3 AM
709 + $next_run = strtotime('tomorrow 3:00 AM');
710 + wp_schedule_event($next_run, 'daily', 'mxchat_cleanup_old_transcripts');
711 + }
712 + }
713 +}
714 +
715 +/**
716 + * Clean up on plugin deactivation
717 + */
718 +function mxchat_deactivate() {
719 + // Clear scheduled cron jobs
720 + wp_clear_scheduled_hook('mxchat_reset_rate_limits');
721 + wp_clear_scheduled_hook('mxchat_cleanup_old_transcripts');
722 + wp_clear_scheduled_hook('mxchat_send_delayed_transcript');
723 +
724 + // Clear fallback options
725 + delete_option('mxchat_use_fallback_rate_limits');
726 + delete_option('mxchat_next_rate_limit_check');
727 + delete_option('mxchat_fallback_check_interval');
728 +
729 + // NOTE: We do NOT delete queue tables on deactivation
730 + // This preserves data if user accidentally deactivates the plugin
731 +}
732 +
733 +/**
734 + * Check if fallback rate limit cleanup is needed
735 + */
736 +function mxchat_check_fallback_rate_limits() {
737 + $use_fallback = get_option('mxchat_use_fallback_rate_limits', false);
738 +
739 + if (!$use_fallback) {
740 + return;
741 + }
742 +
743 + $next_check = get_option('mxchat_next_rate_limit_check', 0);
744 +
745 + if (time() >= $next_check) {
746 + // Only run reset if the MxChat_Integrator class exists
747 + if (class_exists('MxChat_Integrator')) {
748 + $integrator = new MxChat_Integrator();
749 + if (method_exists($integrator, 'mxchat_reset_rate_limits')) {
750 + $integrator->mxchat_reset_rate_limits();
751 + update_option('mxchat_next_rate_limit_check', time() + 3600);
752 + }
753 + }
754 + }
755 +}
756 +
757 +/**
758 + * Robust update checking with role restriction migration, model deprecation, and queue tables
759 + * CRITICAL: This runs on EVERY page load to ensure tables exist
760 + */
761 +function mxchat_check_for_update() {
762 + global $wpdb;
763 +
764 + try {
765 + $current_version = get_option('mxchat_plugin_version', '0.0.0');
766 + $plugin_version = MXCHAT_VERSION;
767 +
768 + // Always ensure critical tables exist (even if version matches)
769 + // This handles manual table deletion or fresh installs
770 + $chat_table = $wpdb->prefix . 'mxchat_chat_transcripts';
771 + $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
772 +
773 + $chat_exists = $wpdb->get_var("SHOW TABLES LIKE '$chat_table'") === $chat_table;
774 + $queue_exists = $wpdb->get_var("SHOW TABLES LIKE '$queue_table'") === $queue_table;
775 +
776 + if (!$chat_exists || !$queue_exists) {
777 + //error_log("MxChat: Critical tables missing, running activation");
778 + mxchat_activate();
779 + }
780 +
781 + // Version-specific migrations
782 + if ($current_version !== $plugin_version) {
783 + //error_log("MxChat: Version change detected: $current_version -> $plugin_version");
784 +
785 + // Run live agent update BEFORE updating the stored version
786 + mxchat_handle_live_agent_update();
787 +
788 + // Run theme migration notice for 3.0.1 (AI theme CSS structure changes)
789 + mxchat_handle_theme_migration_notice();
790 +
791 + // Run role restriction migration for 2.4.1
792 + if (version_compare($current_version, '2.4.1', '<')) {
793 + mxchat_add_role_restriction_column();
794 + }
795 +
796 + // Run enabled_bots column migration for 2.4.4
797 + if (version_compare($current_version, '2.4.4', '<')) {
798 + mxchat_add_enabled_bots_column();
799 + }
800 +
801 + // Run model migration for 2.5.1 (Claude deprecation)
802 + if (version_compare($current_version, '2.5.1', '<')) {
803 + mxchat_migrate_deprecated_models();
804 + }
805 +
806 + // 2.5.2: Ensure queue tables exist and fix URL column sizes for all users upgrading to 2.5.2
807 + if (version_compare($current_version, '2.5.2', '<')) {
808 + mxchat_create_queue_tables();
809 + mxchat_fix_url_column_size(); // NEW: Fix URL column size for long URLs
810 + //error_log("MxChat: Queue tables created and URL columns updated for upgrade to 2.5.2");
811 + }
812 +
813 + // 2.6.0: Ensure rag_context column exists for retrieved documents feature
814 + if (version_compare($current_version, '2.6.0', '<')) {
815 + $chat_table = $wpdb->prefix . 'mxchat_chat_transcripts';
816 + mxchat_ensure_all_columns($chat_table);
817 + //error_log("MxChat: rag_context column migration for 2.6.0");
818 + }
819 +
820 + // 3.0.5: Migrate deprecated Gemini embedding model
821 + if (version_compare($current_version, '3.0.5', '<')) {
822 + mxchat_migrate_gemini_embedding_model();
823 + }
824 +
825 + // 3.0.6: Migrate deprecated OpenAI and Claude models
826 + if (version_compare($current_version, '3.0.6', '<')) {
827 + mxchat_migrate_deprecated_models();
828 + }
829 +
830 + // Run full activation to ensure everything is up to date
831 + mxchat_activate();
832 +
833 + // Run migration functions
834 + mxchat_migrate_live_agent_status();
835 +
836 + // Add the cleanup function for version 2.1.8
837 + if (version_compare($current_version, '2.1.8', '<')) {
838 + $deleted = mxchat_cleanup_orphaned_chat_history();
839 + }
840 +
841 + // Update version LAST
842 + update_option('mxchat_plugin_version', $plugin_version);
843 +
844 + //error_log("MxChat: Updated from version $current_version to $plugin_version");
845 + }
846 +
847 + } catch (Exception $e) {
848 + //error_log('MxChat update error: ' . $e->getMessage());
849 + // Don't update version if there was an error
850 + }
851 +}
852 +
853 +/**
854 + * Ensure tables exist on every admin load for fresh installations
855 + * This is a safety net for cases where activation hook doesn't fire
856 + */
857 +function mxchat_ensure_tables_exist() {
858 + global $wpdb;
859 +
860 + // Only run for admin users to avoid performance impact
861 + if (!current_user_can('administrator')) {
862 + return;
863 + }
864 +
865 + // Check if we've already verified tables in this session
866 + static $tables_checked = false;
867 + if ($tables_checked) {
868 + return;
869 + }
870 + $tables_checked = true;
871 +
872 + $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
873 + $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
874 +
875 + $chat_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
876 + $queue_exists = $wpdb->get_var("SHOW TABLES LIKE '$queue_table'") === $queue_table;
877 +
878 + if (!$chat_exists || !$queue_exists) {
879 + //error_log("MxChat: Tables missing on admin load, running activation");
880 + mxchat_activate();
881 + }
882 +}
883 +
884 +/**
885 + * Clean up orphaned chat history options from the wp_options table
886 + * @return int Number of options deleted
887 + */
888 +function mxchat_cleanup_orphaned_chat_history() {
889 + global $wpdb;
890 + $count = 0;
891 +
892 + // Get all option keys that match our pattern
893 + $history_options = $wpdb->get_results(
894 + "SELECT option_name FROM {$wpdb->options}
895 + WHERE option_name LIKE 'mxchat_history_%'"
896 + );
897 +
898 + if (!empty($history_options)) {
899 + foreach ($history_options as $option) {
900 + // Extract the session ID from the option name
901 + $session_id = str_replace('mxchat_history_', '', $option->option_name);
902 +
903 + // Check if this session still exists in the custom table
904 + $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
905 + $exists = $wpdb->get_var(
906 + $wpdb->prepare(
907 + "SELECT COUNT(*) FROM {$table_name} WHERE session_id = %s",
908 + $session_id
909 + )
910 + );
911 +
912 + // If session doesn't exist in the main table, delete the option
913 + if ($exists == 0) {
914 + delete_option($option->option_name);
915 + // Also delete related metadata
916 + delete_option("mxchat_email_{$session_id}");
917 + delete_option("mxchat_name_{$session_id}");
918 + delete_option("mxchat_agent_name_{$session_id}");
919 + $count++;
920 + }
921 + }
922 + }
923 +
924 + return $count;
925 +}
926 +
927 +function mxchat_migrate_live_agent_status() {
928 + $options = get_option('mxchat_options', []);
929 +
930 + // Check if live_agent_status exists
931 + if (isset($options['live_agent_status'])) {
932 + $current_status = $options['live_agent_status'];
933 + $needs_update = false;
934 +
935 + // Convert to new format if needed
936 + if ($current_status === 'online') {
937 + $options['live_agent_status'] = 'on';
938 + $needs_update = true;
939 + } else if ($current_status === 'offline') {
940 + $options['live_agent_status'] = 'off';
941 + $needs_update = true;
942 + } else if (!in_array($current_status, ['on', 'off'])) {
943 + // Default to off for any unexpected values
944 + $options['live_agent_status'] = 'off';
945 + $needs_update = true;
946 + }
947 +
948 + // Only update if needed
949 + if ($needs_update) {
950 + update_option('mxchat_options', $options);
951 + }
952 + } else {
953 + // If status doesn't exist, set default to off
954 + $options['live_agent_status'] = 'off';
955 + update_option('mxchat_options', $options);
956 + }
957 +}
958 +
959 +function mxchat_handle_live_agent_update() {
960 + // Get the CURRENT stored version (before it gets updated)
961 + $current_version = get_option('mxchat_plugin_version', '0.0.0');
962 + $new_version = '2.2.2';
963 +
964 + // Only run this once for the update to 2.2.2
965 + $update_handled = get_option('mxchat_live_agent_update_2_2_2_handled', false);
966 +
967 + // Check if we're upgrading TO 2.2.2 and haven't handled this yet
968 + if (version_compare($current_version, $new_version, '<') && !$update_handled) {
969 + $options = get_option('mxchat_options', array());
970 +
971 + // Check if live agent was previously enabled
972 + if (isset($options['live_agent_status']) && $options['live_agent_status'] === 'on') {
973 + // Disable live agent
974 + $options['live_agent_status'] = 'off';
975 + update_option('mxchat_options', $options);
976 +
977 + // Set flag to show the notification banner
978 + update_option('mxchat_show_live_agent_disabled_notice', true);
979 + }
980 +
981 + // Mark this update as handled
982 + update_option('mxchat_live_agent_update_2_2_2_handled', true);
983 + }
984 +}
985 +
986 +/**
987 + * Handle theme migration notice for version 3.0.1
988 + * Shows a dismissible notice to Pro users about migrating AI-generated themes
989 + */
990 +function mxchat_handle_theme_migration_notice() {
991 + // Get the CURRENT stored version (before it gets updated)
992 + $current_version = get_option('mxchat_plugin_version', '0.0.0');
993 + $target_version = '3.0.1';
994 +
995 + // Only run this once for the update to 3.0.1
996 + $update_handled = get_option('mxchat_theme_migration_update_3_0_1_handled', false);
997 +
998 + // Check if we're upgrading TO 3.0.1 and haven't handled this yet
999 + if (version_compare($current_version, $target_version, '<') && !$update_handled) {
1000 + // Check if Pro is activated - only show to Pro users
1001 + $license_status = get_option('mxchat_license_status', 'inactive');
1002 + $is_pro = ($license_status === 'active' || $license_status === esc_html__('active', 'mxchat'));
1003 +
1004 + if ($is_pro) {
1005 + // Set flag to show the theme migration notification banner
1006 + update_option('mxchat_show_theme_migration_notice', true);
1007 + }
1008 +
1009 + // Mark this update as handled (whether Pro or not)
1010 + update_option('mxchat_theme_migration_update_3_0_1_handled', true);
1011 + }
1012 +}
1013 +
1014 +// Initialize plugin safely
1015 +function mxchat_init() {
1016 + // Include all class files first
1017 + mxchat_include_classes();
1018 +
1019 + // Run update check (this also ensures tables exist)
1020 + mxchat_check_for_update();
1021 +
1022 + // CRITICAL: Ensure tables exist on admin pages (safety net)
1023 + add_action('admin_init', 'mxchat_ensure_tables_exist', 1);
1024 +
1025 + // Add fallback rate limit check
1026 + add_action('init', 'mxchat_check_fallback_rate_limits', 5);
1027 +
1028 + // Add migration notice hook
1029 + add_action('admin_notices', 'mxchat_show_migration_notice');
1030 +
1031 + // Initialize classes with error handling
1032 + try {
1033 + // Initialize admin classes
1034 + if (is_admin()) {
1035 + if (class_exists('MxChat_Knowledge_Manager')) {
1036 + $mxchat_knowledge_manager = new MxChat_Knowledge_Manager();
1037 +
1038 + if (class_exists('MxChat_Admin')) {
1039 + $mxchat_admin = new MxChat_Admin($mxchat_knowledge_manager);
1040 + }
1041 + }
1042 +
1043 + // Initialize meta box class
1044 + if (class_exists('MxChat_Meta_Box')) {
1045 + new MxChat_Meta_Box();
1046 + }
1047 + }
1048 +
1049 + // Initialize public classes
1050 + if (class_exists('MxChat_Public')) {
1051 + $mxchat_public = new MxChat_Public();
1052 + }
1053 +
1054 + if (class_exists('MxChat_Integrator')) {
1055 + global $mxchat_integrator;
1056 + $mxchat_integrator = new MxChat_Integrator();
1057 + }
1058 +
1059 + } catch (Exception $e) {
1060 + //error_log('MxChat initialization error: ' . $e->getMessage());
1061 +
1062 + // Show admin notice if there's an error
1063 + if (is_admin()) {
1064 + add_action('admin_notices', function() use ($e) {
1065 + echo '<div class="notice notice-error"><p>';
1066 + echo '<strong>MxChat Error:</strong> Plugin initialization failed. ';
1067 + echo 'Please check error logs or contact support. Error: ' . esc_html($e->getMessage());
1068 + echo '</p></div>';
1069 + });
1070 + }
1071 + }
1072 +}
1073 +
1074 +// Run initialization on plugins_loaded
1075 +add_action('plugins_loaded', 'mxchat_init');
1076 +
1077 +// Run migration check on admin init (for auto-updates without reactivation)
1078 +add_action('admin_init', 'mxchat_check_and_run_migrations');
1079 +
1080 +/**
1081 + * Check and run migrations on admin init
1082 + * This ensures migrations run even when plugin is auto-updated
1083 + */
1084 +function mxchat_check_and_run_migrations() {
1085 + // Only run in admin and not on every request
1086 + static $checked = false;
1087 + if ($checked) {
1088 + return;
1089 + }
1090 + $checked = true;
1091 +
1092 + mxchat_migrate_pinecone_roles_add_bot_id();
1093 + mxchat_migrate_add_content_type_column();
1094 + mxchat_migrate_add_translations_table();
1095 +}
1096 +
1097 +/**
1098 + * Migration: Create transcript translations table (v3.0.4)
1099 + * For users upgrading from versions before 3.0.4
1100 + */
1101 +function mxchat_migrate_add_translations_table() {
1102 + $migration_key = 'mxchat_translations_table_created';
1103 +
1104 + // Check if migration already ran
1105 + if (get_option($migration_key)) {
1106 + return;
1107 + }
1108 +
1109 + // Create the translations table
1110 + mxchat_create_translations_table();
1111 +
1112 + // Mark migration as complete
1113 + update_option($migration_key, '3.0.4');
1114 +}
1115 +
1116 +/**
1117 + * Migration: Update deprecated Gemini embedding model (v3.0.5)
1118 + * Updates gemini-embedding-exp-03-07 to gemini-embedding-001 for users who had it selected
1119 + */
1120 +function mxchat_migrate_gemini_embedding_model() {
1121 + $options = get_option('mxchat_options', array());
1122 +
1123 + if (isset($options['embedding_model']) && $options['embedding_model'] === 'gemini-embedding-exp-03-07') {
1124 + $options['embedding_model'] = 'gemini-embedding-001';
1125 + update_option('mxchat_options', $options);
1126 + }
1127 +}
1128 +
1129 +// Register activation hook
1130 +register_activation_hook(__FILE__, 'mxchat_activate');
1131 +
1132 +// Add cron schedule
1133 +add_filter('cron_schedules', function($schedules) {
1134 + $schedules['one_minute'] = array(
1135 + 'interval' => 60,
1136 + 'display' => 'Every Minute'
1137 + );
1138 + return $schedules;
1139 +});
1140 +
1141 +// Register deactivation hook
1463 1142 register_deactivation_hook(__FILE__, 'mxchat_deactivate');