PluginProbe
MxChat – AI Chatbot & Content Generation for WordPress / 2.4.6
MxChat – AI Chatbot & Content Generation for WordPress v2.4.6
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 +702 -1444 3.2.4 → 2.4.6 View file →
@@ -1,1445 +1,703 @@
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: 3.2.4
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 - $class_files = array(
257 - 'includes/class-mxchat-integrator.php',
258 - 'includes/class-mxchat-admin.php',
259 - 'includes/class-mxchat-public.php',
260 - 'includes/class-mxchat-utils.php',
261 - 'includes/class-mxchat-user.php',
262 - 'includes/class-mxchat-meta-box.php',
263 - 'includes/class-mxchat-chunker.php',
264 - 'includes/class-mxchat-word-handler.php',
265 - 'includes/class-mxchat-content-generator.php',
266 - 'admin/class-ajax-handler.php',
267 - 'admin/class-pinecone-manager.php',
268 - 'admin/class-knowledge-manager.php'
269 - );
270 -
271 - foreach ($class_files as $file) {
272 - $file_path = plugin_dir_path(__FILE__) . $file;
273 - if (file_exists($file_path)) {
274 - require_once $file_path;
275 - } else {
276 - //error_log('MxChat: Missing class file - ' . $file);
277 - }
278 - }
279 -}
280 -
281 -/**
282 - * Lazy-load the PDF parser library only when needed.
283 - * Avoids loading 44 files on every page request.
284 - */
285 -function mxchat_load_pdf_parser() {
286 - if (class_exists('\Smalot\PdfParser\Parser')) {
287 - return true;
288 - }
289 - $autoload_path = plugin_dir_path(__FILE__) . 'includes/pdf-parser/alt_autoload.php';
290 - if (file_exists($autoload_path)) {
291 - require_once $autoload_path;
292 - return true;
293 - }
294 - return false;
295 -}
296 -
297 -/**
298 - * Create URL click tracking table
299 - */
300 -function mxchat_create_url_clicks_table() {
301 - global $wpdb;
302 -
303 - $table_name = $wpdb->prefix . 'mxchat_url_clicks';
304 -
305 - $charset_collate = $wpdb->get_charset_collate();
306 -
307 - $sql = "CREATE TABLE $table_name (
308 - id mediumint(9) NOT NULL AUTO_INCREMENT,
309 - session_id varchar(100) NOT NULL,
310 - clicked_url text NOT NULL,
311 - message_context text,
312 - click_timestamp datetime DEFAULT CURRENT_TIMESTAMP,
313 - user_ip varchar(45),
314 - user_agent text,
315 - PRIMARY KEY (id),
316 - KEY session_id (session_id),
317 - KEY click_timestamp (click_timestamp)
318 - ) $charset_collate;";
319 -
320 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
321 - dbDelta($sql);
322 -}
323 -
324 -/**
325 - * FIXED: Robust table creation and column management
326 - */
327 -function mxchat_create_chat_transcripts_table() {
328 - global $wpdb;
329 -
330 - $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
331 - $charset_collate = $wpdb->get_charset_collate();
332 -
333 - // Create table with ALL columns including user_name from the start
334 - $sql = "CREATE TABLE $table_name (
335 - id MEDIUMINT(9) NOT NULL AUTO_INCREMENT,
336 - user_id MEDIUMINT(9) DEFAULT 0,
337 - session_id VARCHAR(255) NOT NULL,
338 - role VARCHAR(255) NOT NULL,
339 - message TEXT NOT NULL,
340 - user_email VARCHAR(255) DEFAULT NULL,
341 - user_name VARCHAR(100) DEFAULT NULL,
342 - user_identifier VARCHAR(255) DEFAULT NULL,
343 - originating_page_url TEXT DEFAULT NULL,
344 - originating_page_title VARCHAR(500) DEFAULT NULL,
345 - timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
346 - PRIMARY KEY (id),
347 - KEY session_id (session_id),
348 - KEY user_email (user_email),
349 - KEY timestamp (timestamp)
350 - ) $charset_collate;";
351 -
352 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
353 - $result = dbDelta($sql);
354 -
355 - // Log the result for debugging
356 - if (empty($result)) {
357 - //error_log("MxChat: dbDelta returned empty result for chat transcripts table");
358 - } else {
359 - //error_log("MxChat: dbDelta result: " . print_r($result, true));
360 - }
361 -
362 - // IMPORTANT: Ensure all columns exist for existing installations
363 - mxchat_ensure_all_columns($table_name);
364 -}
365 -
366 -/**
367 - * Ensure all required columns exist (for upgrades)
368 - */
369 -function mxchat_ensure_all_columns($table_name) {
370 - global $wpdb;
371 -
372 - // First check if table exists
373 - $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
374 - if (!$table_exists) {
375 - //error_log("MxChat: Table $table_name does not exist, cannot add columns");
376 - return;
377 - }
378 -
379 - // Define all required columns and their types
380 - $required_columns = [
381 - 'user_identifier' => 'VARCHAR(255) DEFAULT NULL',
382 - 'user_email' => 'VARCHAR(255) DEFAULT NULL',
383 - 'user_name' => 'VARCHAR(100) DEFAULT NULL',
384 - 'originating_page_url' => 'TEXT DEFAULT NULL',
385 - 'originating_page_title' => 'VARCHAR(500) DEFAULT NULL',
386 - 'rag_context' => 'LONGTEXT DEFAULT NULL'
387 - ];
388 -
389 - // Get existing columns
390 - $existing_columns = $wpdb->get_results("SHOW COLUMNS FROM $table_name");
391 - if (empty($existing_columns)) {
392 - //error_log("MxChat: Could not get columns for table $table_name");
393 - return;
394 - }
395 -
396 - $existing_column_names = array_column($existing_columns, 'Field');
397 -
398 - // Add missing columns
399 - foreach ($required_columns as $column_name => $column_definition) {
400 - if (!in_array($column_name, $existing_column_names)) {
401 - $alter_sql = "ALTER TABLE $table_name ADD COLUMN $column_name $column_definition";
402 - $result = $wpdb->query($alter_sql);
403 -
404 - if ($result === false) {
405 - //error_log("MxChat: Failed to add column $column_name to $table_name. Error: " . $wpdb->last_error);
406 - } else {
407 - //error_log("MxChat: Successfully added column $column_name to $table_name");
408 - }
409 - }
410 - }
411 -}
412 -
413 -/**
414 - * Add role restriction column to knowledge base table
415 - */
416 -function mxchat_add_role_restriction_column() {
417 - global $wpdb;
418 - $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
419 -
420 - // Check if table exists first
421 - $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
422 - if (!$table_exists) {
423 - //error_log("MxChat: System prompt content table does not exist, cannot add role_restriction column");
424 - return;
425 - }
426 -
427 - // Check if column already exists
428 - $column_exists = $wpdb->get_results(
429 - $wpdb->prepare(
430 - "SHOW COLUMNS FROM {$table_name} LIKE %s",
431 - 'role_restriction'
432 - )
433 - );
434 -
435 - if (empty($column_exists)) {
436 - $alter_sql = "ALTER TABLE {$table_name} ADD COLUMN role_restriction VARCHAR(50) DEFAULT 'public' AFTER source_url";
437 - $result = $wpdb->query($alter_sql);
438 -
439 - if ($result === false) {
440 - //error_log("MxChat: Failed to add role_restriction column. Error: " . $wpdb->last_error);
441 - } else {
442 - //error_log("MxChat: Successfully added role_restriction column");
443 -
444 - // Set all existing records to 'public' (everyone can access)
445 - $update_result = $wpdb->query(
446 - "UPDATE {$table_name}
447 - SET role_restriction = 'public'
448 - WHERE role_restriction IS NULL OR role_restriction = ''"
449 - );
450 -
451 - if ($update_result !== false) {
452 - //error_log("MxChat: Updated {$update_result} existing records to public access");
453 - }
454 - }
455 - }
456 -}
457 -
458 -/**
459 - * Add enabled_bots column to intents table for multi-bot action filtering
460 - */
461 -function mxchat_add_enabled_bots_column() {
462 - global $wpdb;
463 - $table_name = $wpdb->prefix . 'mxchat_intents';
464 -
465 - // Check if table exists first
466 - $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
467 - if (!$table_exists) {
468 - //error_log("MxChat: Intents table does not exist, cannot add enabled_bots column");
469 - return;
470 - }
471 -
472 - // Check if column already exists
473 - $column_exists = $wpdb->get_results(
474 - $wpdb->prepare(
475 - "SHOW COLUMNS FROM {$table_name} LIKE %s",
476 - 'enabled_bots'
477 - )
478 - );
479 -
480 - if (empty($column_exists)) {
481 - $alter_sql = "ALTER TABLE {$table_name} ADD COLUMN enabled_bots LONGTEXT DEFAULT NULL AFTER enabled";
482 - $result = $wpdb->query($alter_sql);
483 -
484 - if ($result === false) {
485 - //error_log("MxChat: Failed to add enabled_bots column. Error: " . $wpdb->last_error);
486 - } else {
487 - //error_log("MxChat: Successfully added enabled_bots column");
488 -
489 - // Set all existing actions to work with 'default' bot for backward compatibility
490 - $default_bots = json_encode(['default']);
491 - $update_result = $wpdb->query(
492 - $wpdb->prepare(
493 - "UPDATE {$table_name}
494 - SET enabled_bots = %s
495 - WHERE enabled_bots IS NULL OR enabled_bots = ''",
496 - $default_bots
497 - )
498 - );
499 -
500 - if ($update_result !== false) {
501 - //error_log("MxChat: Updated {$update_result} existing actions to work with default bot");
502 - }
503 - }
504 - }
505 -}
506 -
507 -/**
508 - * Create Pinecone role restrictions table with multi-bot support
509 - */
510 -function mxchat_create_pinecone_roles_table() {
511 - global $wpdb;
512 -
513 - $table_name = $wpdb->prefix . 'mxchat_pinecone_roles';
514 - $charset_collate = $wpdb->get_charset_collate();
515 -
516 - $sql = "CREATE TABLE $table_name (
517 - id mediumint(9) NOT NULL AUTO_INCREMENT,
518 - vector_id varchar(255) NOT NULL,
519 - bot_id varchar(50) NOT NULL DEFAULT 'default',
520 - source_url text,
521 - role_restriction varchar(50) DEFAULT 'public',
522 - updated_at timestamp DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
523 - PRIMARY KEY (id),
524 - UNIQUE KEY vector_bot (vector_id, bot_id),
525 - KEY role_restriction (role_restriction),
526 - KEY bot_id (bot_id)
527 - ) $charset_collate;";
528 -
529 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
530 - dbDelta($sql);
531 -}
532 -
533 -/**
534 - * Add bot_id column to mxchat_pinecone_roles table for multi-bot support
535 - * This migration runs once to update existing installations
536 - */
537 -function mxchat_migrate_pinecone_roles_add_bot_id() {
538 - global $wpdb;
539 -
540 - // Check if migration already ran
541 - $migration_version = get_option('mxchat_pinecone_roles_migration_version', '0');
542 - if (version_compare($migration_version, '2.5.2', '>=')) {
543 - return; // Already migrated
544 - }
545 -
546 - $table_name = $wpdb->prefix . 'mxchat_pinecone_roles';
547 -
548 - // Check if table exists
549 - if ($wpdb->get_var("SHOW TABLES LIKE '{$table_name}'") != $table_name) {
550 - return; // Table doesn't exist yet
551 - }
552 -
553 - // Check if bot_id column already exists
554 - $column_exists = $wpdb->get_results("SHOW COLUMNS FROM {$table_name} LIKE 'bot_id'");
555 -
556 - if (empty($column_exists)) {
557 - // Add bot_id column
558 - $wpdb->query("ALTER TABLE {$table_name} ADD COLUMN bot_id VARCHAR(50) NOT NULL DEFAULT 'default' AFTER vector_id");
559 -
560 - // Update the unique key to include bot_id
561 - $wpdb->query("ALTER TABLE {$table_name} DROP INDEX vector_id");
562 - $wpdb->query("ALTER TABLE {$table_name} ADD UNIQUE KEY vector_bot (vector_id, bot_id)");
563 -
564 - // Add index for bot_id
565 - $wpdb->query("ALTER TABLE {$table_name} ADD KEY bot_id (bot_id)");
566 -
567 - //error_log('MxChat: Successfully added bot_id column to mxchat_pinecone_roles table');
568 - }
569 -
570 - // Mark migration as complete
571 - update_option('mxchat_pinecone_roles_migration_version', '2.5.2');
572 -}
573 -
574 -/**
575 - * 2.5.6: Add content_type column to mxchat_system_prompt_content table
576 - * Enables filtering knowledge base by content type (posts, pages, PDFs, etc.)
577 - */
578 -function mxchat_migrate_add_content_type_column() {
579 - global $wpdb;
580 -
581 - // Check if migration already ran
582 - $migration_version = get_option('mxchat_content_type_migration_version', '0');
583 - if (version_compare($migration_version, '2.5.6', '>=')) {
584 - return;
585 - }
586 -
587 - $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
588 -
589 - // Check if table exists
590 - if ($wpdb->get_var("SHOW TABLES LIKE '{$table_name}'") != $table_name) {
591 - return;
592 - }
593 -
594 - // Check if content_type column already exists
595 - $column_exists = $wpdb->get_results("SHOW COLUMNS FROM {$table_name} LIKE 'content_type'");
596 -
597 - if (empty($column_exists)) {
598 - // Add content_type column with default value 'content' for backwards compatibility
599 - $wpdb->query("ALTER TABLE {$table_name} ADD COLUMN content_type VARCHAR(50) DEFAULT 'content' AFTER role_restriction");
600 -
601 - // Add index for better query performance
602 - $wpdb->query("ALTER TABLE {$table_name} ADD KEY content_type (content_type)");
603 -
604 - //error_log('MxChat: Successfully added content_type column to mxchat_system_prompt_content table');
605 - }
606 -
607 - // Mark migration as complete
608 - update_option('mxchat_content_type_migration_version', '2.5.6');
609 -}
610 -
611 -/**
612 - * 3.2.4: Backfill the active embedding model option for installs that already
613 - * have KB content but no stamped model. The mismatch warning compares this
614 - * against the user's currently selected model — no per-row column needed.
615 - */
616 -function mxchat_backfill_active_embedding_model() {
617 - global $wpdb;
618 -
619 - if (get_option('mxchat_active_embedding_model', '') !== '') {
620 - return;
621 - }
622 -
623 - $kb_table = $wpdb->prefix . 'mxchat_system_prompt_content';
624 - if ($wpdb->get_var("SHOW TABLES LIKE '{$kb_table}'") !== $kb_table) {
625 - return;
626 - }
627 -
628 - $kb_count = (int) $wpdb->get_var("SELECT COUNT(*) FROM {$kb_table}");
629 - if ($kb_count > 0) {
630 - $options = get_option('mxchat_options', array());
631 - $current_model = $options['embedding_model'] ?? 'text-embedding-ada-002';
632 - update_option('mxchat_active_embedding_model', $current_model, false);
633 - }
634 -}
635 -
636 -/**
637 - * 2.5.2: Create queue processing tables for reliable background processing
638 - */
639 -function mxchat_create_queue_tables() {
640 - global $wpdb;
641 - $charset_collate = $wpdb->get_charset_collate();
642 -
643 - // Main queue table
644 - $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
645 - $sql_queue = "CREATE TABLE $queue_table (
646 - id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
647 - queue_id varchar(64) NOT NULL,
648 - item_type varchar(20) NOT NULL,
649 - item_data longtext NOT NULL,
650 - status varchar(20) NOT NULL DEFAULT 'pending',
651 - bot_id varchar(50) NOT NULL DEFAULT 'default',
652 - priority int(11) NOT NULL DEFAULT 0,
653 - attempts int(11) NOT NULL DEFAULT 0,
654 - max_attempts int(11) NOT NULL DEFAULT 3,
655 - error_message text DEFAULT NULL,
656 - created_at datetime NOT NULL,
657 - started_at datetime DEFAULT NULL,
658 - completed_at datetime DEFAULT NULL,
659 - PRIMARY KEY (id),
660 - KEY queue_id (queue_id),
661 - KEY status (status),
662 - KEY item_type (item_type),
663 - KEY priority (priority)
664 - ) $charset_collate;";
665 -
666 - // Queue metadata table
667 - $meta_table = $wpdb->prefix . 'mxchat_queue_meta';
668 - $sql_meta = "CREATE TABLE $meta_table (
669 - id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
670 - queue_id varchar(64) NOT NULL,
671 - meta_key varchar(255) NOT NULL,
672 - meta_value longtext,
673 - PRIMARY KEY (id),
674 - KEY queue_id (queue_id),
675 - KEY meta_key (meta_key)
676 - ) $charset_collate;";
677 -
678 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
679 - dbDelta($sql_queue);
680 - dbDelta($sql_meta);
681 -
682 - //error_log("MxChat: Queue tables created/updated successfully");
683 -}
684 -
685 -/**
686 - * Create transcript translations table for persisting translations
687 - */
688 -function mxchat_create_translations_table() {
689 - global $wpdb;
690 - $charset_collate = $wpdb->get_charset_collate();
691 -
692 - $table_name = $wpdb->prefix . 'mxchat_transcript_translations';
693 - $sql = "CREATE TABLE $table_name (
694 - id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
695 - session_id varchar(255) NOT NULL,
696 - language_code varchar(10) NOT NULL,
697 - translations longtext NOT NULL,
698 - created_at datetime NOT NULL,
699 - updated_at datetime NOT NULL,
700 - PRIMARY KEY (id),
701 - UNIQUE KEY session_lang (session_id, language_code),
702 - KEY session_id (session_id)
703 - ) $charset_collate;";
704 -
705 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
706 - dbDelta($sql);
707 -}
708 -
709 -/**
710 - * 2.5.2: Fix URL column size to support long URLs (especially with UTF-8 encoding)
711 - * This fixes "url, source_url. The supplied values may be too long" errors
712 - */
713 -function mxchat_fix_url_column_size() {
714 - global $wpdb;
715 - $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
716 -
717 - // Check if table exists
718 - $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
719 - if (!$table_exists) {
720 - return;
721 - }
722 -
723 - // Change url and source_url from VARCHAR to TEXT to handle long URLs
724 - // This is especially important for URLs with UTF-8 encoded characters (Hebrew, Arabic, etc.)
725 - $wpdb->query("ALTER TABLE {$table_name} MODIFY COLUMN url TEXT");
726 - $wpdb->query("ALTER TABLE {$table_name} MODIFY COLUMN source_url TEXT");
727 -
728 - //error_log("MxChat: Successfully updated url and source_url columns to TEXT type for long URL support");
729 -}
730 -
731 -/**
732 - * Migrate deprecated AI models to their replacements
733 - * Version 2.5.1: Migrate Claude 3.5 Sonnet (deprecated) to Claude 3.7 Sonnet
734 - * Version 3.1.2: Convert chat transcripts table to utf8mb4 for emoji support
735 - * Without utf8mb4, any bot response containing emojis silently fails to insert.
736 - */
737 -function mxchat_migrate_transcripts_charset() {
738 - global $wpdb;
739 - $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
740 - $wpdb->query("ALTER TABLE $table_name CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci");
741 -}
742 -
743 -/**
744 - * Version 3.0.55: Migrate GPT-4 series models (deprecated 2026-02-17) to GPT-5 series
745 - */
746 -function mxchat_migrate_deprecated_models() {
747 - $options = get_option('mxchat_options', array());
748 - $migrated = false;
749 - $migration_message = '';
750 -
751 - if (!isset($options['model'])) {
752 - return;
753 - }
754 -
755 - $current_model = $options['model'];
756 -
757 - // Migrate deprecated Claude models to Claude Opus 4.6 (recommended replacement per Anthropic)
758 - $deprecated_claude_models = array(
759 - 'claude-3-5-sonnet-20240620', // Retired Oct 28, 2025
760 - 'claude-3-5-sonnet-20241022', // Retired Oct 28, 2025
761 - 'claude-3-7-sonnet-20250219', // Retiring Feb 19, 2026
762 - 'claude-3-opus-20240229', // Retired Jan 5, 2026
763 - 'claude-3-sonnet-20240229', // Legacy
764 - 'claude-3-haiku-20240307', // Legacy
765 - );
766 - if (in_array($current_model, $deprecated_claude_models, true)) {
767 - $options['model'] = 'claude-opus-4-6';
768 - $migrated = true;
769 - $migration_message = sprintf(
770 - 'Your chatbot model has been automatically updated from %s to Claude Opus 4.6 due to Anthropic deprecating older Claude models.',
771 - $current_model
772 - );
773 - }
774 -
775 - // Migrate deprecated Claude Haiku 3.5 to Claude Haiku 4.5
776 - if ($current_model === 'claude-3-5-haiku-20241022') {
777 - $options['model'] = 'claude-haiku-4-5-20251001';
778 - $migrated = true;
779 - $migration_message = 'Your chatbot model has been automatically updated from Claude Haiku 3.5 to Claude Haiku 4.5 due to Anthropic deprecating the older model.';
780 - }
781 -
782 - // Migrate deprecated GPT-4 series and GPT-3.5 Turbo to GPT-5.1 Chat Latest
783 - if (in_array($current_model, array('gpt-4o', 'gpt-4.1-2025-04-14', 'gpt-4-turbo', 'gpt-4', 'gpt-3.5-turbo'), true)) {
784 - $options['model'] = 'gpt-5.1-chat-latest';
785 - $migrated = true;
786 - $migration_message = sprintf(
787 - 'Your chatbot model has been automatically updated from %s to GPT-5.1 Chat Latest due to OpenAI deprecating older models.',
788 - $current_model
789 - );
790 - }
791 -
792 - // Migrate deprecated GPT-4o Mini and GPT-4.1 Mini to GPT-5 Mini
793 - if (in_array($current_model, array('gpt-4o-mini', 'gpt-4.1-mini'), true)) {
794 - $options['model'] = 'gpt-5-mini';
795 - $migrated = true;
796 - $migration_message = sprintf(
797 - 'Your chatbot model has been automatically updated from %s to GPT-5 Mini due to OpenAI deprecating GPT-4 series models.',
798 - $current_model
799 - );
800 - }
801 -
802 - if ($migrated) {
803 - update_option('mxchat_options', $options);
804 - update_option('mxchat_model_migrated_notice', true);
805 - update_option('mxchat_model_migration_message', $migration_message);
806 - }
807 -}
808 -
809 -/**
810 - * Show admin notice after model migration
811 - */
812 -function mxchat_show_migration_notice() {
813 - if (get_option('mxchat_model_migrated_notice')) {
814 - $migration_message = get_option('mxchat_model_migration_message', __('Your chatbot model has been automatically updated due to a model deprecation.', 'mxchat'));
815 - ?>
816 - <div class="notice notice-info is-dismissible">
817 - <p>
818 - <strong><?php esc_html_e('MxChat Model Updated', 'mxchat'); ?></strong><br>
819 - <?php echo esc_html($migration_message); ?>
820 - </p>
821 - </div>
822 - <?php
823 - delete_option('mxchat_model_migrated_notice');
824 - delete_option('mxchat_model_migration_message');
825 - }
826 -}
827 -
828 -function mxchat_activate() {
829 - global $wpdb;
830 - $charset_collate = $wpdb->get_charset_collate();
831 -
832 - //error_log("MxChat: Running activation function");
833 -
834 - // Create chat transcripts table with improved function
835 - mxchat_create_chat_transcripts_table();
836 -
837 - // System Prompt Content Table - UPDATED: Use TEXT for url and source_url columns
838 - $system_prompt_table = $wpdb->prefix . 'mxchat_system_prompt_content';
839 - $sql_system_prompt = "CREATE TABLE $system_prompt_table (
840 - id MEDIUMINT(9) NOT NULL AUTO_INCREMENT,
841 - url TEXT NOT NULL,
842 - article_content LONGTEXT NOT NULL,
843 - embedding_vector LONGTEXT,
844 - source_url TEXT DEFAULT NULL,
845 - role_restriction VARCHAR(50) DEFAULT 'public',
846 - content_type VARCHAR(50) DEFAULT 'content',
847 - timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
848 - PRIMARY KEY (id),
849 - KEY content_type (content_type)
850 - ) $charset_collate;";
851 -
852 - // Intents Table - NOW INCLUDES enabled_bots column from the start
853 - $intents_table = $wpdb->prefix . 'mxchat_intents';
854 - $sql_intents_table = "CREATE TABLE $intents_table (
855 - id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
856 - intent_label VARCHAR(255) NOT NULL,
857 - phrases TEXT NOT NULL,
858 - embedding_vector LONGTEXT NOT NULL,
859 - callback_function VARCHAR(255) NOT NULL,
860 - similarity_threshold FLOAT DEFAULT 0.85,
861 - enabled TINYINT(1) NOT NULL DEFAULT 1,
862 - enabled_bots LONGTEXT DEFAULT NULL,
863 - PRIMARY KEY (id)
864 - ) $charset_collate;";
865 -
866 - // Individual Intent Phrases Table - each phrase gets its own embedding vector
867 - $intent_phrases_table = $wpdb->prefix . 'mxchat_intent_phrases';
868 - $sql_intent_phrases_table = "CREATE TABLE $intent_phrases_table (
869 - id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
870 - intent_id BIGINT(20) UNSIGNED NOT NULL,
871 - phrase TEXT NOT NULL,
872 - embedding_vector LONGTEXT NOT NULL,
873 - created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
874 - PRIMARY KEY (id),
875 - KEY intent_id (intent_id)
876 - ) $charset_collate;";
877 -
878 - require_once ABSPATH . 'wp-admin/includes/upgrade.php';
879 -
880 - // Create other tables
881 - dbDelta($sql_system_prompt);
882 - dbDelta($sql_intents_table);
883 - dbDelta($sql_intent_phrases_table);
884 -
885 - // Create URL click tracking table
886 - mxchat_create_url_clicks_table();
887 -
888 - // Create Pinecone roles table
889 - mxchat_create_pinecone_roles_table();
890 -
891 - // NEW 2.5.2: Create queue processing tables
892 - mxchat_create_queue_tables();
893 -
894 - // Create transcript translations table
895 - mxchat_create_translations_table();
896 -
897 - // Ensure additional columns in system prompt table
898 - $existing_system_columns = $wpdb->get_results("SHOW COLUMNS FROM $system_prompt_table");
899 - if (!empty($existing_system_columns)) {
900 - $existing_system_column_names = array_column($existing_system_columns, 'Field');
901 -
902 - if (!in_array('embedding_vector', $existing_system_column_names)) {
903 - $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN embedding_vector LONGTEXT");
904 - }
905 - if (!in_array('source_url', $existing_system_column_names)) {
906 - $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN source_url TEXT DEFAULT NULL");
907 - }
908 - if (!in_array('role_restriction', $existing_system_column_names)) {
909 - $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN role_restriction VARCHAR(50) DEFAULT 'public' AFTER source_url");
910 - }
911 - }
912 -
913 - // Set default thresholds for existing intents
914 - $wpdb->query("UPDATE {$intents_table} SET similarity_threshold = 0.85 WHERE similarity_threshold IS NULL");
915 -
916 - // Ensure enabled column exists in intents table
917 - $existing_intent_columns = $wpdb->get_results("SHOW COLUMNS FROM $intents_table");
918 - if (!empty($existing_intent_columns)) {
919 - $existing_intent_column_names = array_column($existing_intent_columns, 'Field');
920 -
921 - if (!in_array('enabled', $existing_intent_column_names)) {
922 - $wpdb->query("ALTER TABLE $intents_table ADD COLUMN enabled TINYINT(1) NOT NULL DEFAULT 1");
923 - }
924 -
925 - // Ensure enabled_bots column exists for existing installations
926 - if (!in_array('enabled_bots', $existing_intent_column_names)) {
927 - $wpdb->query("ALTER TABLE $intents_table ADD COLUMN enabled_bots LONGTEXT DEFAULT NULL AFTER enabled");
928 -
929 - // Set existing actions to work with default bot
930 - $default_bots = json_encode(['default']);
931 - $wpdb->query($wpdb->prepare(
932 - "UPDATE {$intents_table} SET enabled_bots = %s WHERE enabled_bots IS NULL",
933 - $default_bots
934 - ));
935 - }
936 - }
937 -
938 - // Run migration for existing installations
939 - mxchat_migrate_pinecone_roles_add_bot_id();
940 -
941 - // 3.2.4: Backfill active embedding model option (replaces 3.2.3 column-based tracking)
942 - mxchat_backfill_active_embedding_model();
943 -
944 - // Setup cron jobs
945 - mxchat_setup_cron_jobs();
946 -
947 - // Update version
948 - update_option('mxchat_plugin_version', MXCHAT_VERSION);
949 -
950 - //error_log("MxChat: Activation function completed");
951 -}
952 -
953 -/**
954 - * Setup cron jobs on plugin activation
955 - */
956 -function mxchat_setup_cron_jobs() {
957 - // Clear any existing cron jobs first
958 - wp_clear_scheduled_hook('mxchat_reset_rate_limits');
959 -
960 - // Check if WordPress cron is disabled
961 - if (defined('DISABLE_WP_CRON') && DISABLE_WP_CRON) {
962 - // Set flag to use fallback system
963 - update_option('mxchat_use_fallback_rate_limits', true);
964 - update_option('mxchat_next_rate_limit_check', time() + 3600);
965 - return;
966 - }
967 -
968 - // Schedule the rate limit reset cron job
969 - $result = wp_schedule_event(time() + 300, 'hourly', 'mxchat_reset_rate_limits');
970 -
971 - if ($result === false) {
972 - // Fallback if scheduling fails
973 - update_option('mxchat_use_fallback_rate_limits', true);
974 - update_option('mxchat_next_rate_limit_check', time() + 3600);
975 - } else {
976 - // Clear fallback flags if cron scheduling succeeded
977 - delete_option('mxchat_use_fallback_rate_limits');
978 - }
979 -
980 - // Schedule transcript cleanup if configured
981 - $transcript_options = get_option('mxchat_transcripts_options', array());
982 - $cleanup_interval = isset($transcript_options['mxchat_auto_delete_transcripts']) ? $transcript_options['mxchat_auto_delete_transcripts'] : 'never';
983 -
984 - if ($cleanup_interval !== 'never') {
985 - // Check if not already scheduled
986 - if (!wp_next_scheduled('mxchat_cleanup_old_transcripts')) {
987 - // Schedule to run daily at 3 AM
988 - $next_run = strtotime('tomorrow 3:00 AM');
989 - wp_schedule_event($next_run, 'daily', 'mxchat_cleanup_old_transcripts');
990 - }
991 - }
992 -}
993 -
994 -/**
995 - * Clean up on plugin deactivation
996 - */
997 -function mxchat_deactivate() {
998 - // Clear scheduled cron jobs
999 - wp_clear_scheduled_hook('mxchat_reset_rate_limits');
1000 - wp_clear_scheduled_hook('mxchat_cleanup_old_transcripts');
1001 - wp_clear_scheduled_hook('mxchat_send_delayed_transcript');
1002 -
1003 - // Clear fallback options
1004 - delete_option('mxchat_use_fallback_rate_limits');
1005 - delete_option('mxchat_next_rate_limit_check');
1006 - delete_option('mxchat_fallback_check_interval');
1007 -
1008 - // NOTE: We do NOT delete queue tables on deactivation
1009 - // This preserves data if user accidentally deactivates the plugin
1010 -}
1011 -
1012 -/**
1013 - * Check if fallback rate limit cleanup is needed
1014 - */
1015 -function mxchat_check_fallback_rate_limits() {
1016 - $use_fallback = get_option('mxchat_use_fallback_rate_limits', false);
1017 -
1018 - if (!$use_fallback) {
1019 - return;
1020 - }
1021 -
1022 - $next_check = get_option('mxchat_next_rate_limit_check', 0);
1023 -
1024 - if (time() >= $next_check) {
1025 - // Only run reset if the MxChat_Integrator class exists
1026 - if (class_exists('MxChat_Integrator')) {
1027 - $integrator = new MxChat_Integrator();
1028 - if (method_exists($integrator, 'mxchat_reset_rate_limits')) {
1029 - $integrator->mxchat_reset_rate_limits();
1030 - update_option('mxchat_next_rate_limit_check', time() + 3600);
1031 - }
1032 - }
1033 - }
1034 -}
1035 -
1036 -/**
1037 - * Robust update checking with role restriction migration, model deprecation, and queue tables
1038 - * CRITICAL: This runs on EVERY page load to ensure tables exist
1039 - */
1040 -function mxchat_check_for_update() {
1041 - global $wpdb;
1042 -
1043 - try {
1044 - $current_version = get_option('mxchat_plugin_version', '0.0.0');
1045 - $plugin_version = MXCHAT_VERSION;
1046 -
1047 - // Always ensure critical tables exist (even if version matches)
1048 - // This handles manual table deletion or fresh installs
1049 - $chat_table = $wpdb->prefix . 'mxchat_chat_transcripts';
1050 - $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
1051 -
1052 - $chat_exists = $wpdb->get_var("SHOW TABLES LIKE '$chat_table'") === $chat_table;
1053 - $queue_exists = $wpdb->get_var("SHOW TABLES LIKE '$queue_table'") === $queue_table;
1054 -
1055 - if (!$chat_exists || !$queue_exists) {
1056 - //error_log("MxChat: Critical tables missing, running activation");
1057 - mxchat_activate();
1058 - }
1059 -
1060 - // Version-specific migrations
1061 - if ($current_version !== $plugin_version) {
1062 - //error_log("MxChat: Version change detected: $current_version -> $plugin_version");
1063 -
1064 - // Run live agent update BEFORE updating the stored version
1065 - mxchat_handle_live_agent_update();
1066 -
1067 - // Run theme migration notice for 3.0.1 (AI theme CSS structure changes)
1068 - mxchat_handle_theme_migration_notice();
1069 -
1070 - // Run role restriction migration for 2.4.1
1071 - if (version_compare($current_version, '2.4.1', '<')) {
1072 - mxchat_add_role_restriction_column();
1073 - }
1074 -
1075 - // Run enabled_bots column migration for 2.4.4
1076 - if (version_compare($current_version, '2.4.4', '<')) {
1077 - mxchat_add_enabled_bots_column();
1078 - }
1079 -
1080 - // Run model migration for 2.5.1 (Claude deprecation)
1081 - if (version_compare($current_version, '2.5.1', '<')) {
1082 - mxchat_migrate_deprecated_models();
1083 - }
1084 -
1085 - // 2.5.2: Ensure queue tables exist and fix URL column sizes for all users upgrading to 2.5.2
1086 - if (version_compare($current_version, '2.5.2', '<')) {
1087 - mxchat_create_queue_tables();
1088 - mxchat_fix_url_column_size(); // NEW: Fix URL column size for long URLs
1089 - //error_log("MxChat: Queue tables created and URL columns updated for upgrade to 2.5.2");
1090 - }
1091 -
1092 - // 2.6.0: Ensure rag_context column exists for retrieved documents feature
1093 - if (version_compare($current_version, '2.6.0', '<')) {
1094 - $chat_table = $wpdb->prefix . 'mxchat_chat_transcripts';
1095 - mxchat_ensure_all_columns($chat_table);
1096 - //error_log("MxChat: rag_context column migration for 2.6.0");
1097 - }
1098 -
1099 - // 3.0.5: Migrate deprecated Gemini embedding model
1100 - if (version_compare($current_version, '3.0.5', '<')) {
1101 - mxchat_migrate_gemini_embedding_model();
1102 - }
1103 -
1104 - // 3.0.6: Migrate deprecated OpenAI and Claude models
1105 - if (version_compare($current_version, '3.0.6', '<')) {
1106 - mxchat_migrate_deprecated_models();
1107 - }
1108 -
1109 - // 3.1.2: Convert chat transcripts table to utf8mb4 for emoji support
1110 - if (version_compare($current_version, '3.1.2', '<')) {
1111 - mxchat_migrate_transcripts_charset();
1112 - }
1113 -
1114 - // 3.1.7: Clean up stale shared session email/name entries
1115 - if (version_compare($current_version, '3.1.7', '<')) {
1116 - delete_option('mxchat_email_null');
1117 - delete_option('mxchat_name_null');
1118 - }
1119 -
1120 - // 3.2.4: Backfill active embedding model option for the warning UI
1121 - // (replaces the per-row column tracking from 3.2.3, which was reverted)
1122 - if (version_compare($current_version, '3.2.4', '<')) {
1123 - mxchat_backfill_active_embedding_model();
1124 - }
1125 -
1126 - // Run full activation to ensure everything is up to date
1127 - mxchat_activate();
1128 -
1129 - // Run migration functions
1130 - mxchat_migrate_live_agent_status();
1131 -
1132 - // Add the cleanup function for version 2.1.8
1133 - if (version_compare($current_version, '2.1.8', '<')) {
1134 - $deleted = mxchat_cleanup_orphaned_chat_history();
1135 - }
1136 -
1137 - // Update version LAST
1138 - update_option('mxchat_plugin_version', $plugin_version);
1139 -
1140 - //error_log("MxChat: Updated from version $current_version to $plugin_version");
1141 - }
1142 -
1143 - } catch (Exception $e) {
1144 - //error_log('MxChat update error: ' . $e->getMessage());
1145 - // Don't update version if there was an error
1146 - }
1147 -}
1148 -
1149 -/**
1150 - * Ensure tables exist on every admin load for fresh installations
1151 - * This is a safety net for cases where activation hook doesn't fire
1152 - */
1153 -function mxchat_ensure_tables_exist() {
1154 - global $wpdb;
1155 -
1156 - // Only run for admin users to avoid performance impact
1157 - if (!current_user_can('administrator')) {
1158 - return;
1159 - }
1160 -
1161 - // Check if we've already verified tables in this session
1162 - static $tables_checked = false;
1163 - if ($tables_checked) {
1164 - return;
1165 - }
1166 - $tables_checked = true;
1167 -
1168 - $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
1169 - $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
1170 -
1171 - $chat_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
1172 - $queue_exists = $wpdb->get_var("SHOW TABLES LIKE '$queue_table'") === $queue_table;
1173 -
1174 - if (!$chat_exists || !$queue_exists) {
1175 - //error_log("MxChat: Tables missing on admin load, running activation");
1176 - mxchat_activate();
1177 - }
1178 -}
1179 -
1180 -/**
1181 - * Clean up orphaned chat history options from the wp_options table
1182 - * @return int Number of options deleted
1183 - */
1184 -function mxchat_cleanup_orphaned_chat_history() {
1185 - global $wpdb;
1186 - $count = 0;
1187 -
1188 - // Get all option keys that match our pattern
1189 - $history_options = $wpdb->get_results(
1190 - "SELECT option_name FROM {$wpdb->options}
1191 - WHERE option_name LIKE 'mxchat_history_%'"
1192 - );
1193 -
1194 - if (!empty($history_options)) {
1195 - foreach ($history_options as $option) {
1196 - // Extract the session ID from the option name
1197 - $session_id = str_replace('mxchat_history_', '', $option->option_name);
1198 -
1199 - // Check if this session still exists in the custom table
1200 - $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
1201 - $exists = $wpdb->get_var(
1202 - $wpdb->prepare(
1203 - "SELECT COUNT(*) FROM {$table_name} WHERE session_id = %s",
1204 - $session_id
1205 - )
1206 - );
1207 -
1208 - // If session doesn't exist in the main table, delete the option
1209 - if ($exists == 0) {
1210 - delete_option($option->option_name);
1211 - // Also delete related metadata
1212 - delete_option("mxchat_email_{$session_id}");
1213 - delete_option("mxchat_name_{$session_id}");
1214 - delete_option("mxchat_agent_name_{$session_id}");
1215 - $count++;
1216 - }
1217 - }
1218 - }
1219 -
1220 - return $count;
1221 -}
1222 -
1223 -function mxchat_migrate_live_agent_status() {
1224 - $options = get_option('mxchat_options', []);
1225 -
1226 - // Check if live_agent_status exists
1227 - if (isset($options['live_agent_status'])) {
1228 - $current_status = $options['live_agent_status'];
1229 - $needs_update = false;
1230 -
1231 - // Convert to new format if needed
1232 - if ($current_status === 'online') {
1233 - $options['live_agent_status'] = 'on';
1234 - $needs_update = true;
1235 - } else if ($current_status === 'offline') {
1236 - $options['live_agent_status'] = 'off';
1237 - $needs_update = true;
1238 - } else if (!in_array($current_status, ['on', 'off'])) {
1239 - // Default to off for any unexpected values
1240 - $options['live_agent_status'] = 'off';
1241 - $needs_update = true;
1242 - }
1243 -
1244 - // Only update if needed
1245 - if ($needs_update) {
1246 - update_option('mxchat_options', $options);
1247 - }
1248 - } else {
1249 - // If status doesn't exist, set default to off
1250 - $options['live_agent_status'] = 'off';
1251 - update_option('mxchat_options', $options);
1252 - }
1253 -}
1254 -
1255 -function mxchat_handle_live_agent_update() {
1256 - // Get the CURRENT stored version (before it gets updated)
1257 - $current_version = get_option('mxchat_plugin_version', '0.0.0');
1258 - $new_version = '2.2.2';
1259 -
1260 - // Only run this once for the update to 2.2.2
1261 - $update_handled = get_option('mxchat_live_agent_update_2_2_2_handled', false);
1262 -
1263 - // Check if we're upgrading TO 2.2.2 and haven't handled this yet
1264 - if (version_compare($current_version, $new_version, '<') && !$update_handled) {
1265 - $options = get_option('mxchat_options', array());
1266 -
1267 - // Check if live agent was previously enabled
1268 - if (isset($options['live_agent_status']) && $options['live_agent_status'] === 'on') {
1269 - // Disable live agent
1270 - $options['live_agent_status'] = 'off';
1271 - update_option('mxchat_options', $options);
1272 -
1273 - // Set flag to show the notification banner
1274 - update_option('mxchat_show_live_agent_disabled_notice', true);
1275 - }
1276 -
1277 - // Mark this update as handled
1278 - update_option('mxchat_live_agent_update_2_2_2_handled', true);
1279 - }
1280 -}
1281 -
1282 -/**
1283 - * Handle theme migration notice for version 3.0.1
1284 - * Shows a dismissible notice to Pro users about migrating AI-generated themes
1285 - */
1286 -function mxchat_handle_theme_migration_notice() {
1287 - // Get the CURRENT stored version (before it gets updated)
1288 - $current_version = get_option('mxchat_plugin_version', '0.0.0');
1289 - $target_version = '3.0.1';
1290 -
1291 - // Only run this once for the update to 3.0.1
1292 - $update_handled = get_option('mxchat_theme_migration_update_3_0_1_handled', false);
1293 -
1294 - // Check if we're upgrading TO 3.0.1 and haven't handled this yet
1295 - if (version_compare($current_version, $target_version, '<') && !$update_handled) {
1296 - // Check if Pro is activated - only show to Pro users
1297 - $license_status = get_option('mxchat_license_status', 'inactive');
1298 - $is_pro = ($license_status === 'active');
1299 -
1300 - if ($is_pro) {
1301 - // Set flag to show the theme migration notification banner
1302 - update_option('mxchat_show_theme_migration_notice', true);
1303 - }
1304 -
1305 - // Mark this update as handled (whether Pro or not)
1306 - update_option('mxchat_theme_migration_update_3_0_1_handled', true);
1307 - }
1308 -}
1309 -
1310 -// Initialize plugin safely
1311 -function mxchat_init() {
1312 - // Include all class files first
1313 - mxchat_include_classes();
1314 -
1315 - // Run update check (this also ensures tables exist)
1316 - mxchat_check_for_update();
1317 -
1318 - // CRITICAL: Ensure tables exist on admin pages (safety net)
1319 - add_action('admin_init', 'mxchat_ensure_tables_exist', 1);
1320 -
1321 - // Add fallback rate limit check
1322 - add_action('init', 'mxchat_check_fallback_rate_limits', 5);
1323 -
1324 - // Add migration notice hook
1325 - add_action('admin_notices', 'mxchat_show_migration_notice');
1326 -
1327 - // Initialize classes with error handling
1328 - try {
1329 - // Initialize admin classes
1330 - if (is_admin()) {
1331 - if (class_exists('MxChat_Knowledge_Manager')) {
1332 - $mxchat_knowledge_manager = new MxChat_Knowledge_Manager();
1333 -
1334 - if (class_exists('MxChat_Admin')) {
1335 - $mxchat_admin = new MxChat_Admin($mxchat_knowledge_manager);
1336 - }
1337 - }
1338 -
1339 - // Initialize meta box class
1340 - if (class_exists('MxChat_Meta_Box')) {
1341 - new MxChat_Meta_Box();
1342 - }
1343 -
1344 - }
1345 -
1346 - // Initialize content generator globally — it registers wp_head hook
1347 - // for frontend CSS injection, plus wp_ajax_ hooks for admin.
1348 - if (class_exists('MxChat_Content_Generator')) {
1349 - new MxChat_Content_Generator();
1350 - }
1351 -
1352 - // Initialize public classes
1353 - if (class_exists('MxChat_Public')) {
1354 - $mxchat_public = new MxChat_Public();
1355 - }
1356 -
1357 - if (class_exists('MxChat_Integrator')) {
1358 - global $mxchat_integrator;
1359 - $mxchat_integrator = new MxChat_Integrator();
1360 - }
1361 -
1362 - } catch (Exception $e) {
1363 - //error_log('MxChat initialization error: ' . $e->getMessage());
1364 -
1365 - // Show admin notice if there's an error
1366 - if (is_admin()) {
1367 - add_action('admin_notices', function() use ($e) {
1368 - echo '<div class="notice notice-error"><p>';
1369 - echo '<strong>MxChat Error:</strong> Plugin initialization failed. ';
1370 - echo 'Please check error logs or contact support. Error: ' . esc_html($e->getMessage());
1371 - echo '</p></div>';
1372 - });
1373 - }
1374 - }
1375 -}
1376 -
1377 -// Run initialization on plugins_loaded
1378 -add_action('plugins_loaded', 'mxchat_init');
1379 -
1380 -// Run migration check on admin init (for auto-updates without reactivation)
1381 -add_action('admin_init', 'mxchat_check_and_run_migrations');
1382 -
1383 -/**
1384 - * Check and run migrations on admin init
1385 - * This ensures migrations run even when plugin is auto-updated
1386 - */
1387 -function mxchat_check_and_run_migrations() {
1388 - // Only run in admin and not on every request
1389 - static $checked = false;
1390 - if ($checked) {
1391 - return;
1392 - }
1393 - $checked = true;
1394 -
1395 - mxchat_migrate_pinecone_roles_add_bot_id();
1396 - mxchat_migrate_add_content_type_column();
1397 - mxchat_migrate_add_translations_table();
1398 -}
1399 -
1400 -/**
1401 - * Migration: Create transcript translations table (v3.0.4)
1402 - * For users upgrading from versions before 3.0.4
1403 - */
1404 -function mxchat_migrate_add_translations_table() {
1405 - $migration_key = 'mxchat_translations_table_created';
1406 -
1407 - // Check if migration already ran
1408 - if (get_option($migration_key)) {
1409 - return;
1410 - }
1411 -
1412 - // Create the translations table
1413 - mxchat_create_translations_table();
1414 -
1415 - // Mark migration as complete
1416 - update_option($migration_key, '3.0.4');
1417 -}
1418 -
1419 -/**
1420 - * Migration: Update deprecated Gemini embedding model (v3.0.5)
1421 - * Updates gemini-embedding-exp-03-07 to gemini-embedding-001 for users who had it selected
1422 - */
1423 -function mxchat_migrate_gemini_embedding_model() {
1424 - $options = get_option('mxchat_options', array());
1425 -
1426 - if (isset($options['embedding_model']) && $options['embedding_model'] === 'gemini-embedding-exp-03-07') {
1427 - $options['embedding_model'] = 'gemini-embedding-001';
1428 - update_option('mxchat_options', $options);
1429 - }
1430 -}
1431 -
1432 -// Register activation hook
1433 -register_activation_hook(__FILE__, 'mxchat_activate');
1434 -
1435 -// Add cron schedule
1436 -add_filter('cron_schedules', function($schedules) {
1437 - $schedules['one_minute'] = array(
1438 - 'interval' => 60,
1439 - 'display' => 'Every Minute'
1440 - );
1441 - return $schedules;
1442 -});
1443 -
1444 -// 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: 2.4.6
7 + * Author: MxChat
8 + * Author URI: https://mxchat.ai
9 + * License: GPLv2 or later
10 + * License URI: https://www.gnu.org/licenses/gpl-2.0.html
11 + * Text Domain: mxchat
12 + * Domain Path: /languages
13 + */
14 +
15 +if (!defined('ABSPATH')) {
16 + exit; // Exit if accessed directly.
17 +}
18 +
19 +// Define plugin version constant for asset versioning
20 +define('MXCHAT_VERSION', '2.4.6');
21 +
22 +function mxchat_load_textdomain() {
23 + load_plugin_textdomain('mxchat', false, dirname(plugin_basename(__FILE__)) . '/languages');
24 +}
25 +add_action('plugins_loaded', 'mxchat_load_textdomain');
26 +
27 +// Include classes with error handling
28 +function mxchat_include_classes() {
29 + $class_files = array(
30 + 'includes/class-mxchat-integrator.php',
31 + 'includes/class-mxchat-admin.php',
32 + 'includes/class-mxchat-public.php',
33 + 'includes/class-mxchat-utils.php',
34 + 'includes/class-mxchat-user.php',
35 + 'includes/class-mxchat-meta-box.php',
36 + 'includes/pdf-parser/alt_autoload.php',
37 + 'includes/class-mxchat-word-handler.php',
38 + 'admin/class-ajax-handler.php',
39 + 'admin/class-pinecone-manager.php',
40 + 'admin/class-knowledge-manager.php'
41 + );
42 +
43 + foreach ($class_files as $file) {
44 + $file_path = plugin_dir_path(__FILE__) . $file;
45 + if (file_exists($file_path)) {
46 + require_once $file_path;
47 + } else {
48 + //error_log('MxChat: Missing class file - ' . $file);
49 + }
50 + }
51 +}
52 +
53 +/**
54 + * Create URL click tracking table
55 + */
56 +function mxchat_create_url_clicks_table() {
57 + global $wpdb;
58 +
59 + $table_name = $wpdb->prefix . 'mxchat_url_clicks';
60 +
61 + $charset_collate = $wpdb->get_charset_collate();
62 +
63 + $sql = "CREATE TABLE $table_name (
64 + id mediumint(9) NOT NULL AUTO_INCREMENT,
65 + session_id varchar(100) NOT NULL,
66 + clicked_url text NOT NULL,
67 + message_context text,
68 + click_timestamp datetime DEFAULT CURRENT_TIMESTAMP,
69 + user_ip varchar(45),
70 + user_agent text,
71 + PRIMARY KEY (id),
72 + KEY session_id (session_id),
73 + KEY click_timestamp (click_timestamp)
74 + ) $charset_collate;";
75 +
76 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
77 + dbDelta($sql);
78 +}
79 +
80 +/**
81 + * FIXED: Robust table creation and column management
82 + */
83 +function mxchat_create_chat_transcripts_table() {
84 + global $wpdb;
85 +
86 + $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
87 + $charset_collate = $wpdb->get_charset_collate();
88 +
89 + // Create table with ALL columns including user_name from the start
90 + $sql = "CREATE TABLE $table_name (
91 + id MEDIUMINT(9) NOT NULL AUTO_INCREMENT,
92 + user_id MEDIUMINT(9) DEFAULT 0,
93 + session_id VARCHAR(255) NOT NULL,
94 + role VARCHAR(255) NOT NULL,
95 + message TEXT NOT NULL,
96 + user_email VARCHAR(255) DEFAULT NULL,
97 + user_name VARCHAR(100) DEFAULT NULL,
98 + user_identifier VARCHAR(255) DEFAULT NULL,
99 + originating_page_url TEXT DEFAULT NULL,
100 + originating_page_title VARCHAR(500) DEFAULT NULL,
101 + timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
102 + PRIMARY KEY (id),
103 + KEY session_id (session_id),
104 + KEY user_email (user_email),
105 + KEY timestamp (timestamp)
106 + ) $charset_collate;";
107 +
108 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
109 + $result = dbDelta($sql);
110 +
111 + // Log the result for debugging
112 + if (empty($result)) {
113 + //error_log("MxChat: dbDelta returned empty result for chat transcripts table");
114 + } else {
115 + //error_log("MxChat: dbDelta result: " . print_r($result, true));
116 + }
117 +
118 + // IMPORTANT: Ensure all columns exist for existing installations
119 + mxchat_ensure_all_columns($table_name);
120 +}
121 +
122 +/**
123 + * Ensure all required columns exist (for upgrades)
124 + */
125 +function mxchat_ensure_all_columns($table_name) {
126 + global $wpdb;
127 +
128 + // First check if table exists
129 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
130 + if (!$table_exists) {
131 + //error_log("MxChat: Table $table_name does not exist, cannot add columns");
132 + return;
133 + }
134 +
135 + // Define all required columns and their types
136 + $required_columns = [
137 + 'user_identifier' => 'VARCHAR(255) DEFAULT NULL',
138 + 'user_email' => 'VARCHAR(255) DEFAULT NULL',
139 + 'user_name' => 'VARCHAR(100) DEFAULT NULL',
140 + 'originating_page_url' => 'TEXT DEFAULT NULL',
141 + 'originating_page_title' => 'VARCHAR(500) DEFAULT NULL'
142 + ];
143 +
144 + // Get existing columns
145 + $existing_columns = $wpdb->get_results("SHOW COLUMNS FROM $table_name");
146 + if (empty($existing_columns)) {
147 + //error_log("MxChat: Could not get columns for table $table_name");
148 + return;
149 + }
150 +
151 + $existing_column_names = array_column($existing_columns, 'Field');
152 +
153 + // Add missing columns
154 + foreach ($required_columns as $column_name => $column_definition) {
155 + if (!in_array($column_name, $existing_column_names)) {
156 + $alter_sql = "ALTER TABLE $table_name ADD COLUMN $column_name $column_definition";
157 + $result = $wpdb->query($alter_sql);
158 +
159 + if ($result === false) {
160 + //error_log("MxChat: Failed to add column $column_name to $table_name. Error: " . $wpdb->last_error);
161 + } else {
162 + //error_log("MxChat: Successfully added column $column_name to $table_name");
163 + }
164 + }
165 + }
166 +}
167 +
168 +/**
169 + * Add role restriction column to knowledge base table
170 + */
171 +function mxchat_add_role_restriction_column() {
172 + global $wpdb;
173 + $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
174 +
175 + // Check if table exists first
176 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
177 + if (!$table_exists) {
178 + //error_log("MxChat: System prompt content table does not exist, cannot add role_restriction column");
179 + return;
180 + }
181 +
182 + // Check if column already exists
183 + $column_exists = $wpdb->get_results(
184 + $wpdb->prepare(
185 + "SHOW COLUMNS FROM {$table_name} LIKE %s",
186 + 'role_restriction'
187 + )
188 + );
189 +
190 + if (empty($column_exists)) {
191 + $alter_sql = "ALTER TABLE {$table_name} ADD COLUMN role_restriction VARCHAR(50) DEFAULT 'public' AFTER source_url";
192 + $result = $wpdb->query($alter_sql);
193 +
194 + if ($result === false) {
195 + //error_log("MxChat: Failed to add role_restriction column. Error: " . $wpdb->last_error);
196 + } else {
197 + //error_log("MxChat: Successfully added role_restriction column");
198 +
199 + // Set all existing records to 'public' (everyone can access)
200 + $update_result = $wpdb->query(
201 + "UPDATE {$table_name}
202 + SET role_restriction = 'public'
203 + WHERE role_restriction IS NULL OR role_restriction = ''"
204 + );
205 +
206 + if ($update_result !== false) {
207 + //error_log("MxChat: Updated {$update_result} existing records to public access");
208 + }
209 + }
210 + }
211 +}
212 +
213 +/**
214 + * NEW: Add enabled_bots column to intents table for multi-bot action filtering
215 + */
216 +function mxchat_add_enabled_bots_column() {
217 + global $wpdb;
218 + $table_name = $wpdb->prefix . 'mxchat_intents';
219 +
220 + // Check if table exists first
221 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
222 + if (!$table_exists) {
223 + //error_log("MxChat: Intents table does not exist, cannot add enabled_bots column");
224 + return;
225 + }
226 +
227 + // Check if column already exists
228 + $column_exists = $wpdb->get_results(
229 + $wpdb->prepare(
230 + "SHOW COLUMNS FROM {$table_name} LIKE %s",
231 + 'enabled_bots'
232 + )
233 + );
234 +
235 + if (empty($column_exists)) {
236 + $alter_sql = "ALTER TABLE {$table_name} ADD COLUMN enabled_bots LONGTEXT DEFAULT NULL AFTER enabled";
237 + $result = $wpdb->query($alter_sql);
238 +
239 + if ($result === false) {
240 + //error_log("MxChat: Failed to add enabled_bots column. Error: " . $wpdb->last_error);
241 + } else {
242 + //error_log("MxChat: Successfully added enabled_bots column");
243 +
244 + // Set all existing actions to work with 'default' bot for backward compatibility
245 + $default_bots = json_encode(['default']);
246 + $update_result = $wpdb->query(
247 + $wpdb->prepare(
248 + "UPDATE {$table_name}
249 + SET enabled_bots = %s
250 + WHERE enabled_bots IS NULL OR enabled_bots = ''",
251 + $default_bots
252 + )
253 + );
254 +
255 + if ($update_result !== false) {
256 + //error_log("MxChat: Updated {$update_result} existing actions to work with default bot");
257 + }
258 + }
259 + }
260 +}
261 +
262 +/**
263 + * Create Pinecone role restrictions table
264 + */
265 +function mxchat_create_pinecone_roles_table() {
266 + global $wpdb;
267 +
268 + $table_name = $wpdb->prefix . 'mxchat_pinecone_roles';
269 + $charset_collate = $wpdb->get_charset_collate();
270 +
271 + $sql = "CREATE TABLE $table_name (
272 + id mediumint(9) NOT NULL AUTO_INCREMENT,
273 + vector_id varchar(255) NOT NULL,
274 + source_url text,
275 + role_restriction varchar(50) DEFAULT 'public',
276 + updated_at timestamp DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
277 + PRIMARY KEY (id),
278 + UNIQUE KEY vector_id (vector_id),
279 + KEY role_restriction (role_restriction)
280 + ) $charset_collate;";
281 +
282 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
283 + dbDelta($sql);
284 +}
285 +
286 +function mxchat_activate() {
287 + global $wpdb;
288 + $charset_collate = $wpdb->get_charset_collate();
289 +
290 + //error_log("MxChat: Running activation function");
291 +
292 + // Create chat transcripts table with improved function
293 + mxchat_create_chat_transcripts_table();
294 +
295 + // System Prompt Content Table
296 + $system_prompt_table = $wpdb->prefix . 'mxchat_system_prompt_content';
297 + $sql_system_prompt = "CREATE TABLE $system_prompt_table (
298 + id MEDIUMINT(9) NOT NULL AUTO_INCREMENT,
299 + url VARCHAR(255) NOT NULL,
300 + article_content LONGTEXT NOT NULL,
301 + embedding_vector LONGTEXT,
302 + source_url VARCHAR(255) DEFAULT NULL,
303 + role_restriction VARCHAR(50) DEFAULT 'public',
304 + timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
305 + PRIMARY KEY (id)
306 + ) $charset_collate;";
307 +
308 + // Intents Table - NOW INCLUDES enabled_bots column from the start
309 + $intents_table = $wpdb->prefix . 'mxchat_intents';
310 + $sql_intents_table = "CREATE TABLE $intents_table (
311 + id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
312 + intent_label VARCHAR(255) NOT NULL,
313 + phrases TEXT NOT NULL,
314 + embedding_vector LONGTEXT NOT NULL,
315 + callback_function VARCHAR(255) NOT NULL,
316 + similarity_threshold FLOAT DEFAULT 0.85,
317 + enabled TINYINT(1) NOT NULL DEFAULT 1,
318 + enabled_bots LONGTEXT DEFAULT NULL,
319 + PRIMARY KEY (id)
320 + ) $charset_collate;";
321 +
322 + require_once ABSPATH . 'wp-admin/includes/upgrade.php';
323 +
324 + // Create other tables
325 + dbDelta($sql_system_prompt);
326 + dbDelta($sql_intents_table);
327 +
328 + // Create URL click tracking table
329 + mxchat_create_url_clicks_table();
330 +
331 + //Create Pinecone roles table
332 + mxchat_create_pinecone_roles_table();
333 +
334 + // Ensure additional columns in system prompt table
335 + $existing_system_columns = $wpdb->get_results("SHOW COLUMNS FROM $system_prompt_table");
336 + if (!empty($existing_system_columns)) {
337 + $existing_system_column_names = array_column($existing_system_columns, 'Field');
338 +
339 + if (!in_array('embedding_vector', $existing_system_column_names)) {
340 + $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN embedding_vector LONGTEXT");
341 + }
342 + if (!in_array('source_url', $existing_system_column_names)) {
343 + $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN source_url VARCHAR(255) DEFAULT NULL");
344 + }
345 + if (!in_array('role_restriction', $existing_system_column_names)) {
346 + $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN role_restriction VARCHAR(50) DEFAULT 'public' AFTER source_url");
347 + }
348 + }
349 +
350 + // Set default thresholds for existing intents
351 + $wpdb->query("UPDATE {$intents_table} SET similarity_threshold = 0.85 WHERE similarity_threshold IS NULL");
352 +
353 + // Ensure enabled column exists in intents table
354 + $existing_intent_columns = $wpdb->get_results("SHOW COLUMNS FROM $intents_table");
355 + if (!empty($existing_intent_columns)) {
356 + $existing_intent_column_names = array_column($existing_intent_columns, 'Field');
357 +
358 + if (!in_array('enabled', $existing_intent_column_names)) {
359 + $wpdb->query("ALTER TABLE $intents_table ADD COLUMN enabled TINYINT(1) NOT NULL DEFAULT 1");
360 + }
361 +
362 + // NEW: Ensure enabled_bots column exists for existing installations
363 + if (!in_array('enabled_bots', $existing_intent_column_names)) {
364 + $wpdb->query("ALTER TABLE $intents_table ADD COLUMN enabled_bots LONGTEXT DEFAULT NULL AFTER enabled");
365 +
366 + // Set existing actions to work with default bot
367 + $default_bots = json_encode(['default']);
368 + $wpdb->query($wpdb->prepare(
369 + "UPDATE {$intents_table} SET enabled_bots = %s WHERE enabled_bots IS NULL",
370 + $default_bots
371 + ));
372 + }
373 + }
374 +
375 + // Setup cron jobs
376 + mxchat_setup_cron_jobs();
377 +
378 + // Update version
379 + update_option('mxchat_plugin_version', MXCHAT_VERSION);
380 +
381 + //error_log("MxChat: Activation function completed");
382 +}
383 +
384 +/**
385 + * Setup cron jobs on plugin activation
386 + */
387 +function mxchat_setup_cron_jobs() {
388 + // Clear any existing cron jobs first
389 + wp_clear_scheduled_hook('mxchat_reset_rate_limits');
390 +
391 + // Check if WordPress cron is disabled
392 + if (defined('DISABLE_WP_CRON') && DISABLE_WP_CRON) {
393 + // Set flag to use fallback system
394 + update_option('mxchat_use_fallback_rate_limits', true);
395 + update_option('mxchat_next_rate_limit_check', time() + 3600);
396 + return;
397 + }
398 +
399 + // Schedule the rate limit reset cron job
400 + $result = wp_schedule_event(time() + 300, 'hourly', 'mxchat_reset_rate_limits');
401 +
402 + if ($result === false) {
403 + // Fallback if scheduling fails
404 + update_option('mxchat_use_fallback_rate_limits', true);
405 + update_option('mxchat_next_rate_limit_check', time() + 3600);
406 + } else {
407 + // Clear fallback flags if cron scheduling succeeded
408 + delete_option('mxchat_use_fallback_rate_limits');
409 + }
410 +}
411 +
412 +/**
413 + * Clean up on plugin deactivation
414 + */
415 +function mxchat_deactivate() {
416 + // Clear scheduled cron jobs
417 + wp_clear_scheduled_hook('mxchat_reset_rate_limits');
418 +
419 + // Clear fallback options
420 + delete_option('mxchat_use_fallback_rate_limits');
421 + delete_option('mxchat_next_rate_limit_check');
422 + delete_option('mxchat_fallback_check_interval');
423 +}
424 +
425 +/**
426 + * Check if fallback rate limit cleanup is needed
427 + */
428 +function mxchat_check_fallback_rate_limits() {
429 + $use_fallback = get_option('mxchat_use_fallback_rate_limits', false);
430 +
431 + if (!$use_fallback) {
432 + return;
433 + }
434 +
435 + $next_check = get_option('mxchat_next_rate_limit_check', 0);
436 +
437 + if (time() >= $next_check) {
438 + // Only run reset if the MxChat_Integrator class exists
439 + if (class_exists('MxChat_Integrator')) {
440 + $integrator = new MxChat_Integrator();
441 + if (method_exists($integrator, 'mxchat_reset_rate_limits')) {
442 + $integrator->mxchat_reset_rate_limits();
443 + update_option('mxchat_next_rate_limit_check', time() + 3600);
444 + }
445 + }
446 + }
447 +}
448 +
449 +/**
450 + * Robust update checking with role restriction migration
451 + */
452 +function mxchat_check_for_update() {
453 + global $wpdb; // CRITICAL: Declare this at the top
454 +
455 + try {
456 + $current_version = get_option('mxchat_plugin_version', '0.0.0');
457 + $plugin_version = MXCHAT_VERSION;
458 +
459 + // Always run activation to ensure tables exist (safe for existing installations)
460 + if ($current_version !== $plugin_version) {
461 + //error_log("MxChat: Version change detected: $current_version -> $plugin_version");
462 +
463 + // Run live agent update BEFORE updating the stored version
464 + mxchat_handle_live_agent_update();
465 +
466 + //Run role restriction migration for 2.4.1
467 + if (version_compare($current_version, '2.4.1', '<')) {
468 + mxchat_add_role_restriction_column();
469 + }
470 +
471 + // NEW: Run enabled_bots column migration for 2.4.4
472 + if (version_compare($current_version, '2.4.4', '<')) {
473 + mxchat_add_enabled_bots_column();
474 + }
475 +
476 + // Run activation (this will create/update all tables and columns)
477 + mxchat_activate();
478 +
479 + // Run migration functions
480 + mxchat_migrate_live_agent_status();
481 +
482 + // Add the cleanup function for version 2.1.8
483 + if (version_compare($current_version, '2.1.8', '<')) {
484 + $deleted = mxchat_cleanup_orphaned_chat_history();
485 + }
486 +
487 + // Update version LAST
488 + update_option('mxchat_plugin_version', $plugin_version);
489 +
490 + //error_log("MxChat: Updated from version $current_version to $plugin_version");
491 + }
492 +
493 + // CRITICAL: Always ensure tables exist, even if version matches
494 + // This handles cases where tables were manually deleted
495 + $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
496 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
497 +
498 + if (!$table_exists) {
499 + //error_log("MxChat: Chat transcripts table missing, recreating...");
500 + mxchat_activate(); // Run full activation instead of just table creation
501 + }
502 +
503 + } catch (Exception $e) {
504 + //error_log('MxChat update error: ' . $e->getMessage());
505 + // Don't update version if there was an error
506 + }
507 +}
508 +
509 +/**
510 + * Ensure tables exist on every load for fresh installations
511 + */
512 +function mxchat_ensure_tables_exist() {
513 + global $wpdb;
514 +
515 + // Only run for admin users to avoid performance impact
516 + if (!current_user_can('administrator')) {
517 + return;
518 + }
519 +
520 + $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
521 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
522 +
523 + if (!$table_exists) {
524 + //error_log("MxChat: Tables missing on admin load, running activation");
525 + mxchat_activate();
526 + }
527 +}
528 +
529 +/**
530 + * Clean up orphaned chat history options from the wp_options table
531 + * @return int Number of options deleted
532 + */
533 +function mxchat_cleanup_orphaned_chat_history() {
534 + global $wpdb;
535 + $count = 0;
536 +
537 + // Get all option keys that match our pattern
538 + $history_options = $wpdb->get_results(
539 + "SELECT option_name FROM {$wpdb->options}
540 + WHERE option_name LIKE 'mxchat_history_%'"
541 + );
542 +
543 + if (!empty($history_options)) {
544 + foreach ($history_options as $option) {
545 + // Extract the session ID from the option name
546 + $session_id = str_replace('mxchat_history_', '', $option->option_name);
547 +
548 + // Check if this session still exists in the custom table
549 + $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
550 + $exists = $wpdb->get_var(
551 + $wpdb->prepare(
552 + "SELECT COUNT(*) FROM {$table_name} WHERE session_id = %s",
553 + $session_id
554 + )
555 + );
556 +
557 + // If session doesn't exist in the main table, delete the option
558 + if ($exists == 0) {
559 + delete_option($option->option_name);
560 + // Also delete related metadata
561 + delete_option("mxchat_email_{$session_id}");
562 + delete_option("mxchat_name_{$session_id}");
563 + delete_option("mxchat_agent_name_{$session_id}");
564 + $count++;
565 + }
566 + }
567 + }
568 +
569 + return $count;
570 +}
571 +
572 +function mxchat_migrate_live_agent_status() {
573 + $options = get_option('mxchat_options', []);
574 +
575 + // Check if live_agent_status exists
576 + if (isset($options['live_agent_status'])) {
577 + $current_status = $options['live_agent_status'];
578 + $needs_update = false;
579 +
580 + // Convert to new format if needed
581 + if ($current_status === 'online') {
582 + $options['live_agent_status'] = 'on';
583 + $needs_update = true;
584 + } else if ($current_status === 'offline') {
585 + $options['live_agent_status'] = 'off';
586 + $needs_update = true;
587 + } else if (!in_array($current_status, ['on', 'off'])) {
588 + // Default to off for any unexpected values
589 + $options['live_agent_status'] = 'off';
590 + $needs_update = true;
591 + }
592 +
593 + // Only update if needed
594 + if ($needs_update) {
595 + update_option('mxchat_options', $options);
596 + }
597 + } else {
598 + // If status doesn't exist, set default to off
599 + $options['live_agent_status'] = 'off';
600 + update_option('mxchat_options', $options);
601 + }
602 +}
603 +
604 +function mxchat_handle_live_agent_update() {
605 + // Get the CURRENT stored version (before it gets updated)
606 + $current_version = get_option('mxchat_plugin_version', '0.0.0');
607 + $new_version = '2.2.2';
608 +
609 + // Only run this once for the update to 2.2.2
610 + $update_handled = get_option('mxchat_live_agent_update_2_2_2_handled', false);
611 +
612 + // Check if we're upgrading TO 2.2.2 and haven't handled this yet
613 + if (version_compare($current_version, $new_version, '<') && !$update_handled) {
614 + $options = get_option('mxchat_options', array());
615 +
616 + // Check if live agent was previously enabled
617 + if (isset($options['live_agent_status']) && $options['live_agent_status'] === 'on') {
618 + // Disable live agent
619 + $options['live_agent_status'] = 'off';
620 + update_option('mxchat_options', $options);
621 +
622 + // Set flag to show the notification banner
623 + update_option('mxchat_show_live_agent_disabled_notice', true);
624 + }
625 +
626 + // Mark this update as handled
627 + update_option('mxchat_live_agent_update_2_2_2_handled', true);
628 + }
629 +}
630 +
631 +// Initialize plugin safely
632 +function mxchat_init() {
633 + // Include all class files first
634 + mxchat_include_classes();
635 +
636 + // Run update check
637 + mxchat_check_for_update();
638 +
639 + // CRITICAL: Ensure tables exist (for fresh installations that don't trigger activation hook)
640 + add_action('admin_init', 'mxchat_ensure_tables_exist', 1);
641 +
642 + // Add fallback rate limit check
643 + add_action('init', 'mxchat_check_fallback_rate_limits', 5);
644 +
645 + // Initialize classes with error handling
646 + try {
647 + // Initialize admin classes
648 + if (is_admin()) {
649 + if (class_exists('MxChat_Knowledge_Manager')) {
650 + $mxchat_knowledge_manager = new MxChat_Knowledge_Manager();
651 +
652 + if (class_exists('MxChat_Admin')) {
653 + $mxchat_admin = new MxChat_Admin($mxchat_knowledge_manager);
654 + }
655 + }
656 +
657 + // Initialize meta box class
658 + if (class_exists('MxChat_Meta_Box')) {
659 + new MxChat_Meta_Box();
660 + }
661 + }
662 +
663 + // Initialize public classes
664 + if (class_exists('MxChat_Public')) {
665 + $mxchat_public = new MxChat_Public();
666 + }
667 +
668 + if (class_exists('MxChat_Integrator')) {
669 + $mxchat_integrator = new MxChat_Integrator();
670 + }
671 +
672 + } catch (Exception $e) {
673 + //error_log('MxChat initialization error: ' . $e->getMessage());
674 +
675 + // Show admin notice if there's an error
676 + if (is_admin()) {
677 + add_action('admin_notices', function() use ($e) {
678 + echo '<div class="notice notice-error"><p>';
679 + echo '<strong>MxChat Error:</strong> Plugin initialization failed. ';
680 + echo 'Please check error logs or contact support. Error: ' . esc_html($e->getMessage());
681 + echo '</p></div>';
682 + });
683 + }
684 + }
685 +}
686 +
687 +// Run initialization on plugins_loaded
688 +add_action('plugins_loaded', 'mxchat_init');
689 +
690 +// Register activation hook
691 +register_activation_hook(__FILE__, 'mxchat_activate');
692 +
693 +// Add cron schedule
694 +add_filter('cron_schedules', function($schedules) {
695 + $schedules['one_minute'] = array(
696 + 'interval' => 60,
697 + 'display' => 'Every Minute'
698 + );
699 + return $schedules;
700 +});
701 +
702 +// Register deactivation hook
1445 703 register_deactivation_hook(__FILE__, 'mxchat_deactivate');