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MxChat – AI Chatbot & Content Generation for WordPress / 3.1.2
MxChat – AI Chatbot & Content Generation for WordPress v3.1.2
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← All changes | mxchat-basic.php +1384 -1410 3.2.1 → 3.1.2 View file →
@@ -1,1411 +1,1385 @@
1 -<?php
2 -/**
3 - * Plugin Name: MxChat
4 - * Plugin URI: https://mxchat.ai/
5 - * Description: AI chatbot for WordPress with OpenAI, Claude, xAI, DeepSeek, live agent, PDF uploads, WooCommerce, and training on website data.
6 - * Version: 3.2.1
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 - * 2.5.2: Create queue processing tables for reliable background processing
613 - */
614 -function mxchat_create_queue_tables() {
615 - global $wpdb;
616 - $charset_collate = $wpdb->get_charset_collate();
617 -
618 - // Main queue table
619 - $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
620 - $sql_queue = "CREATE TABLE $queue_table (
621 - id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
622 - queue_id varchar(64) NOT NULL,
623 - item_type varchar(20) NOT NULL,
624 - item_data longtext NOT NULL,
625 - status varchar(20) NOT NULL DEFAULT 'pending',
626 - bot_id varchar(50) NOT NULL DEFAULT 'default',
627 - priority int(11) NOT NULL DEFAULT 0,
628 - attempts int(11) NOT NULL DEFAULT 0,
629 - max_attempts int(11) NOT NULL DEFAULT 3,
630 - error_message text DEFAULT NULL,
631 - created_at datetime NOT NULL,
632 - started_at datetime DEFAULT NULL,
633 - completed_at datetime DEFAULT NULL,
634 - PRIMARY KEY (id),
635 - KEY queue_id (queue_id),
636 - KEY status (status),
637 - KEY item_type (item_type),
638 - KEY priority (priority)
639 - ) $charset_collate;";
640 -
641 - // Queue metadata table
642 - $meta_table = $wpdb->prefix . 'mxchat_queue_meta';
643 - $sql_meta = "CREATE TABLE $meta_table (
644 - id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
645 - queue_id varchar(64) NOT NULL,
646 - meta_key varchar(255) NOT NULL,
647 - meta_value longtext,
648 - PRIMARY KEY (id),
649 - KEY queue_id (queue_id),
650 - KEY meta_key (meta_key)
651 - ) $charset_collate;";
652 -
653 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
654 - dbDelta($sql_queue);
655 - dbDelta($sql_meta);
656 -
657 - //error_log("MxChat: Queue tables created/updated successfully");
658 -}
659 -
660 -/**
661 - * Create transcript translations table for persisting translations
662 - */
663 -function mxchat_create_translations_table() {
664 - global $wpdb;
665 - $charset_collate = $wpdb->get_charset_collate();
666 -
667 - $table_name = $wpdb->prefix . 'mxchat_transcript_translations';
668 - $sql = "CREATE TABLE $table_name (
669 - id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
670 - session_id varchar(255) NOT NULL,
671 - language_code varchar(10) NOT NULL,
672 - translations longtext NOT NULL,
673 - created_at datetime NOT NULL,
674 - updated_at datetime NOT NULL,
675 - PRIMARY KEY (id),
676 - UNIQUE KEY session_lang (session_id, language_code),
677 - KEY session_id (session_id)
678 - ) $charset_collate;";
679 -
680 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
681 - dbDelta($sql);
682 -}
683 -
684 -/**
685 - * 2.5.2: Fix URL column size to support long URLs (especially with UTF-8 encoding)
686 - * This fixes "url, source_url. The supplied values may be too long" errors
687 - */
688 -function mxchat_fix_url_column_size() {
689 - global $wpdb;
690 - $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
691 -
692 - // Check if table exists
693 - $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
694 - if (!$table_exists) {
695 - return;
696 - }
697 -
698 - // Change url and source_url from VARCHAR to TEXT to handle long URLs
699 - // This is especially important for URLs with UTF-8 encoded characters (Hebrew, Arabic, etc.)
700 - $wpdb->query("ALTER TABLE {$table_name} MODIFY COLUMN url TEXT");
701 - $wpdb->query("ALTER TABLE {$table_name} MODIFY COLUMN source_url TEXT");
702 -
703 - //error_log("MxChat: Successfully updated url and source_url columns to TEXT type for long URL support");
704 -}
705 -
706 -/**
707 - * Migrate deprecated AI models to their replacements
708 - * Version 2.5.1: Migrate Claude 3.5 Sonnet (deprecated) to Claude 3.7 Sonnet
709 - * Version 3.1.2: Convert chat transcripts table to utf8mb4 for emoji support
710 - * Without utf8mb4, any bot response containing emojis silently fails to insert.
711 - */
712 -function mxchat_migrate_transcripts_charset() {
713 - global $wpdb;
714 - $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
715 - $wpdb->query("ALTER TABLE $table_name CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci");
716 -}
717 -
718 -/**
719 - * Version 3.0.55: Migrate GPT-4 series models (deprecated 2026-02-17) to GPT-5 series
720 - */
721 -function mxchat_migrate_deprecated_models() {
722 - $options = get_option('mxchat_options', array());
723 - $migrated = false;
724 - $migration_message = '';
725 -
726 - if (!isset($options['model'])) {
727 - return;
728 - }
729 -
730 - $current_model = $options['model'];
731 -
732 - // Migrate deprecated Claude models to Claude Opus 4.6 (recommended replacement per Anthropic)
733 - $deprecated_claude_models = array(
734 - 'claude-3-5-sonnet-20240620', // Retired Oct 28, 2025
735 - 'claude-3-5-sonnet-20241022', // Retired Oct 28, 2025
736 - 'claude-3-7-sonnet-20250219', // Retiring Feb 19, 2026
737 - 'claude-3-opus-20240229', // Retired Jan 5, 2026
738 - 'claude-3-sonnet-20240229', // Legacy
739 - 'claude-3-haiku-20240307', // Legacy
740 - );
741 - if (in_array($current_model, $deprecated_claude_models, true)) {
742 - $options['model'] = 'claude-opus-4-6';
743 - $migrated = true;
744 - $migration_message = sprintf(
745 - 'Your chatbot model has been automatically updated from %s to Claude Opus 4.6 due to Anthropic deprecating older Claude models.',
746 - $current_model
747 - );
748 - }
749 -
750 - // Migrate deprecated Claude Haiku 3.5 to Claude Haiku 4.5
751 - if ($current_model === 'claude-3-5-haiku-20241022') {
752 - $options['model'] = 'claude-haiku-4-5-20251001';
753 - $migrated = true;
754 - $migration_message = 'Your chatbot model has been automatically updated from Claude Haiku 3.5 to Claude Haiku 4.5 due to Anthropic deprecating the older model.';
755 - }
756 -
757 - // Migrate deprecated GPT-4 series and GPT-3.5 Turbo to GPT-5.1 Chat Latest
758 - if (in_array($current_model, array('gpt-4o', 'gpt-4.1-2025-04-14', 'gpt-4-turbo', 'gpt-4', 'gpt-3.5-turbo'), true)) {
759 - $options['model'] = 'gpt-5.1-chat-latest';
760 - $migrated = true;
761 - $migration_message = sprintf(
762 - 'Your chatbot model has been automatically updated from %s to GPT-5.1 Chat Latest due to OpenAI deprecating older models.',
763 - $current_model
764 - );
765 - }
766 -
767 - // Migrate deprecated GPT-4o Mini and GPT-4.1 Mini to GPT-5 Mini
768 - if (in_array($current_model, array('gpt-4o-mini', 'gpt-4.1-mini'), true)) {
769 - $options['model'] = 'gpt-5-mini';
770 - $migrated = true;
771 - $migration_message = sprintf(
772 - 'Your chatbot model has been automatically updated from %s to GPT-5 Mini due to OpenAI deprecating GPT-4 series models.',
773 - $current_model
774 - );
775 - }
776 -
777 - if ($migrated) {
778 - update_option('mxchat_options', $options);
779 - update_option('mxchat_model_migrated_notice', true);
780 - update_option('mxchat_model_migration_message', $migration_message);
781 - }
782 -}
783 -
784 -/**
785 - * Show admin notice after model migration
786 - */
787 -function mxchat_show_migration_notice() {
788 - if (get_option('mxchat_model_migrated_notice')) {
789 - $migration_message = get_option('mxchat_model_migration_message', __('Your chatbot model has been automatically updated due to a model deprecation.', 'mxchat'));
790 - ?>
791 - <div class="notice notice-info is-dismissible">
792 - <p>
793 - <strong><?php esc_html_e('MxChat Model Updated', 'mxchat'); ?></strong><br>
794 - <?php echo esc_html($migration_message); ?>
795 - </p>
796 - </div>
797 - <?php
798 - delete_option('mxchat_model_migrated_notice');
799 - delete_option('mxchat_model_migration_message');
800 - }
801 -}
802 -
803 -function mxchat_activate() {
804 - global $wpdb;
805 - $charset_collate = $wpdb->get_charset_collate();
806 -
807 - //error_log("MxChat: Running activation function");
808 -
809 - // Create chat transcripts table with improved function
810 - mxchat_create_chat_transcripts_table();
811 -
812 - // System Prompt Content Table - UPDATED: Use TEXT for url and source_url columns
813 - $system_prompt_table = $wpdb->prefix . 'mxchat_system_prompt_content';
814 - $sql_system_prompt = "CREATE TABLE $system_prompt_table (
815 - id MEDIUMINT(9) NOT NULL AUTO_INCREMENT,
816 - url TEXT NOT NULL,
817 - article_content LONGTEXT NOT NULL,
818 - embedding_vector LONGTEXT,
819 - source_url TEXT DEFAULT NULL,
820 - role_restriction VARCHAR(50) DEFAULT 'public',
821 - content_type VARCHAR(50) DEFAULT 'content',
822 - timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
823 - PRIMARY KEY (id),
824 - KEY content_type (content_type)
825 - ) $charset_collate;";
826 -
827 - // Intents Table - NOW INCLUDES enabled_bots column from the start
828 - $intents_table = $wpdb->prefix . 'mxchat_intents';
829 - $sql_intents_table = "CREATE TABLE $intents_table (
830 - id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
831 - intent_label VARCHAR(255) NOT NULL,
832 - phrases TEXT NOT NULL,
833 - embedding_vector LONGTEXT NOT NULL,
834 - callback_function VARCHAR(255) NOT NULL,
835 - similarity_threshold FLOAT DEFAULT 0.85,
836 - enabled TINYINT(1) NOT NULL DEFAULT 1,
837 - enabled_bots LONGTEXT DEFAULT NULL,
838 - PRIMARY KEY (id)
839 - ) $charset_collate;";
840 -
841 - // Individual Intent Phrases Table - each phrase gets its own embedding vector
842 - $intent_phrases_table = $wpdb->prefix . 'mxchat_intent_phrases';
843 - $sql_intent_phrases_table = "CREATE TABLE $intent_phrases_table (
844 - id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
845 - intent_id BIGINT(20) UNSIGNED NOT NULL,
846 - phrase TEXT NOT NULL,
847 - embedding_vector LONGTEXT NOT NULL,
848 - created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
849 - PRIMARY KEY (id),
850 - KEY intent_id (intent_id)
851 - ) $charset_collate;";
852 -
853 - require_once ABSPATH . 'wp-admin/includes/upgrade.php';
854 -
855 - // Create other tables
856 - dbDelta($sql_system_prompt);
857 - dbDelta($sql_intents_table);
858 - dbDelta($sql_intent_phrases_table);
859 -
860 - // Create URL click tracking table
861 - mxchat_create_url_clicks_table();
862 -
863 - // Create Pinecone roles table
864 - mxchat_create_pinecone_roles_table();
865 -
866 - // NEW 2.5.2: Create queue processing tables
867 - mxchat_create_queue_tables();
868 -
869 - // Create transcript translations table
870 - mxchat_create_translations_table();
871 -
872 - // Ensure additional columns in system prompt table
873 - $existing_system_columns = $wpdb->get_results("SHOW COLUMNS FROM $system_prompt_table");
874 - if (!empty($existing_system_columns)) {
875 - $existing_system_column_names = array_column($existing_system_columns, 'Field');
876 -
877 - if (!in_array('embedding_vector', $existing_system_column_names)) {
878 - $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN embedding_vector LONGTEXT");
879 - }
880 - if (!in_array('source_url', $existing_system_column_names)) {
881 - $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN source_url TEXT DEFAULT NULL");
882 - }
883 - if (!in_array('role_restriction', $existing_system_column_names)) {
884 - $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN role_restriction VARCHAR(50) DEFAULT 'public' AFTER source_url");
885 - }
886 - }
887 -
888 - // Set default thresholds for existing intents
889 - $wpdb->query("UPDATE {$intents_table} SET similarity_threshold = 0.85 WHERE similarity_threshold IS NULL");
890 -
891 - // Ensure enabled column exists in intents table
892 - $existing_intent_columns = $wpdb->get_results("SHOW COLUMNS FROM $intents_table");
893 - if (!empty($existing_intent_columns)) {
894 - $existing_intent_column_names = array_column($existing_intent_columns, 'Field');
895 -
896 - if (!in_array('enabled', $existing_intent_column_names)) {
897 - $wpdb->query("ALTER TABLE $intents_table ADD COLUMN enabled TINYINT(1) NOT NULL DEFAULT 1");
898 - }
899 -
900 - // Ensure enabled_bots column exists for existing installations
901 - if (!in_array('enabled_bots', $existing_intent_column_names)) {
902 - $wpdb->query("ALTER TABLE $intents_table ADD COLUMN enabled_bots LONGTEXT DEFAULT NULL AFTER enabled");
903 -
904 - // Set existing actions to work with default bot
905 - $default_bots = json_encode(['default']);
906 - $wpdb->query($wpdb->prepare(
907 - "UPDATE {$intents_table} SET enabled_bots = %s WHERE enabled_bots IS NULL",
908 - $default_bots
909 - ));
910 - }
911 - }
912 -
913 - // Run migration for existing installations
914 - mxchat_migrate_pinecone_roles_add_bot_id();
915 -
916 - // Setup cron jobs
917 - mxchat_setup_cron_jobs();
918 -
919 - // Update version
920 - update_option('mxchat_plugin_version', MXCHAT_VERSION);
921 -
922 - //error_log("MxChat: Activation function completed");
923 -}
924 -
925 -/**
926 - * Setup cron jobs on plugin activation
927 - */
928 -function mxchat_setup_cron_jobs() {
929 - // Clear any existing cron jobs first
930 - wp_clear_scheduled_hook('mxchat_reset_rate_limits');
931 -
932 - // Check if WordPress cron is disabled
933 - if (defined('DISABLE_WP_CRON') && DISABLE_WP_CRON) {
934 - // Set flag to use fallback system
935 - update_option('mxchat_use_fallback_rate_limits', true);
936 - update_option('mxchat_next_rate_limit_check', time() + 3600);
937 - return;
938 - }
939 -
940 - // Schedule the rate limit reset cron job
941 - $result = wp_schedule_event(time() + 300, 'hourly', 'mxchat_reset_rate_limits');
942 -
943 - if ($result === false) {
944 - // Fallback if scheduling fails
945 - update_option('mxchat_use_fallback_rate_limits', true);
946 - update_option('mxchat_next_rate_limit_check', time() + 3600);
947 - } else {
948 - // Clear fallback flags if cron scheduling succeeded
949 - delete_option('mxchat_use_fallback_rate_limits');
950 - }
951 -
952 - // Schedule transcript cleanup if configured
953 - $transcript_options = get_option('mxchat_transcripts_options', array());
954 - $cleanup_interval = isset($transcript_options['mxchat_auto_delete_transcripts']) ? $transcript_options['mxchat_auto_delete_transcripts'] : 'never';
955 -
956 - if ($cleanup_interval !== 'never') {
957 - // Check if not already scheduled
958 - if (!wp_next_scheduled('mxchat_cleanup_old_transcripts')) {
959 - // Schedule to run daily at 3 AM
960 - $next_run = strtotime('tomorrow 3:00 AM');
961 - wp_schedule_event($next_run, 'daily', 'mxchat_cleanup_old_transcripts');
962 - }
963 - }
964 -}
965 -
966 -/**
967 - * Clean up on plugin deactivation
968 - */
969 -function mxchat_deactivate() {
970 - // Clear scheduled cron jobs
971 - wp_clear_scheduled_hook('mxchat_reset_rate_limits');
972 - wp_clear_scheduled_hook('mxchat_cleanup_old_transcripts');
973 - wp_clear_scheduled_hook('mxchat_send_delayed_transcript');
974 -
975 - // Clear fallback options
976 - delete_option('mxchat_use_fallback_rate_limits');
977 - delete_option('mxchat_next_rate_limit_check');
978 - delete_option('mxchat_fallback_check_interval');
979 -
980 - // NOTE: We do NOT delete queue tables on deactivation
981 - // This preserves data if user accidentally deactivates the plugin
982 -}
983 -
984 -/**
985 - * Check if fallback rate limit cleanup is needed
986 - */
987 -function mxchat_check_fallback_rate_limits() {
988 - $use_fallback = get_option('mxchat_use_fallback_rate_limits', false);
989 -
990 - if (!$use_fallback) {
991 - return;
992 - }
993 -
994 - $next_check = get_option('mxchat_next_rate_limit_check', 0);
995 -
996 - if (time() >= $next_check) {
997 - // Only run reset if the MxChat_Integrator class exists
998 - if (class_exists('MxChat_Integrator')) {
999 - $integrator = new MxChat_Integrator();
1000 - if (method_exists($integrator, 'mxchat_reset_rate_limits')) {
1001 - $integrator->mxchat_reset_rate_limits();
1002 - update_option('mxchat_next_rate_limit_check', time() + 3600);
1003 - }
1004 - }
1005 - }
1006 -}
1007 -
1008 -/**
1009 - * Robust update checking with role restriction migration, model deprecation, and queue tables
1010 - * CRITICAL: This runs on EVERY page load to ensure tables exist
1011 - */
1012 -function mxchat_check_for_update() {
1013 - global $wpdb;
1014 -
1015 - try {
1016 - $current_version = get_option('mxchat_plugin_version', '0.0.0');
1017 - $plugin_version = MXCHAT_VERSION;
1018 -
1019 - // Always ensure critical tables exist (even if version matches)
1020 - // This handles manual table deletion or fresh installs
1021 - $chat_table = $wpdb->prefix . 'mxchat_chat_transcripts';
1022 - $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
1023 -
1024 - $chat_exists = $wpdb->get_var("SHOW TABLES LIKE '$chat_table'") === $chat_table;
1025 - $queue_exists = $wpdb->get_var("SHOW TABLES LIKE '$queue_table'") === $queue_table;
1026 -
1027 - if (!$chat_exists || !$queue_exists) {
1028 - //error_log("MxChat: Critical tables missing, running activation");
1029 - mxchat_activate();
1030 - }
1031 -
1032 - // Version-specific migrations
1033 - if ($current_version !== $plugin_version) {
1034 - //error_log("MxChat: Version change detected: $current_version -> $plugin_version");
1035 -
1036 - // Run live agent update BEFORE updating the stored version
1037 - mxchat_handle_live_agent_update();
1038 -
1039 - // Run theme migration notice for 3.0.1 (AI theme CSS structure changes)
1040 - mxchat_handle_theme_migration_notice();
1041 -
1042 - // Run role restriction migration for 2.4.1
1043 - if (version_compare($current_version, '2.4.1', '<')) {
1044 - mxchat_add_role_restriction_column();
1045 - }
1046 -
1047 - // Run enabled_bots column migration for 2.4.4
1048 - if (version_compare($current_version, '2.4.4', '<')) {
1049 - mxchat_add_enabled_bots_column();
1050 - }
1051 -
1052 - // Run model migration for 2.5.1 (Claude deprecation)
1053 - if (version_compare($current_version, '2.5.1', '<')) {
1054 - mxchat_migrate_deprecated_models();
1055 - }
1056 -
1057 - // 2.5.2: Ensure queue tables exist and fix URL column sizes for all users upgrading to 2.5.2
1058 - if (version_compare($current_version, '2.5.2', '<')) {
1059 - mxchat_create_queue_tables();
1060 - mxchat_fix_url_column_size(); // NEW: Fix URL column size for long URLs
1061 - //error_log("MxChat: Queue tables created and URL columns updated for upgrade to 2.5.2");
1062 - }
1063 -
1064 - // 2.6.0: Ensure rag_context column exists for retrieved documents feature
1065 - if (version_compare($current_version, '2.6.0', '<')) {
1066 - $chat_table = $wpdb->prefix . 'mxchat_chat_transcripts';
1067 - mxchat_ensure_all_columns($chat_table);
1068 - //error_log("MxChat: rag_context column migration for 2.6.0");
1069 - }
1070 -
1071 - // 3.0.5: Migrate deprecated Gemini embedding model
1072 - if (version_compare($current_version, '3.0.5', '<')) {
1073 - mxchat_migrate_gemini_embedding_model();
1074 - }
1075 -
1076 - // 3.0.6: Migrate deprecated OpenAI and Claude models
1077 - if (version_compare($current_version, '3.0.6', '<')) {
1078 - mxchat_migrate_deprecated_models();
1079 - }
1080 -
1081 - // 3.1.2: Convert chat transcripts table to utf8mb4 for emoji support
1082 - if (version_compare($current_version, '3.1.2', '<')) {
1083 - mxchat_migrate_transcripts_charset();
1084 - }
1085 -
1086 - // 3.1.7: Clean up stale shared session email/name entries
1087 - if (version_compare($current_version, '3.1.7', '<')) {
1088 - delete_option('mxchat_email_null');
1089 - delete_option('mxchat_name_null');
1090 - }
1091 -
1092 - // Run full activation to ensure everything is up to date
1093 - mxchat_activate();
1094 -
1095 - // Run migration functions
1096 - mxchat_migrate_live_agent_status();
1097 -
1098 - // Add the cleanup function for version 2.1.8
1099 - if (version_compare($current_version, '2.1.8', '<')) {
1100 - $deleted = mxchat_cleanup_orphaned_chat_history();
1101 - }
1102 -
1103 - // Update version LAST
1104 - update_option('mxchat_plugin_version', $plugin_version);
1105 -
1106 - //error_log("MxChat: Updated from version $current_version to $plugin_version");
1107 - }
1108 -
1109 - } catch (Exception $e) {
1110 - //error_log('MxChat update error: ' . $e->getMessage());
1111 - // Don't update version if there was an error
1112 - }
1113 -}
1114 -
1115 -/**
1116 - * Ensure tables exist on every admin load for fresh installations
1117 - * This is a safety net for cases where activation hook doesn't fire
1118 - */
1119 -function mxchat_ensure_tables_exist() {
1120 - global $wpdb;
1121 -
1122 - // Only run for admin users to avoid performance impact
1123 - if (!current_user_can('administrator')) {
1124 - return;
1125 - }
1126 -
1127 - // Check if we've already verified tables in this session
1128 - static $tables_checked = false;
1129 - if ($tables_checked) {
1130 - return;
1131 - }
1132 - $tables_checked = true;
1133 -
1134 - $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
1135 - $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
1136 -
1137 - $chat_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
1138 - $queue_exists = $wpdb->get_var("SHOW TABLES LIKE '$queue_table'") === $queue_table;
1139 -
1140 - if (!$chat_exists || !$queue_exists) {
1141 - //error_log("MxChat: Tables missing on admin load, running activation");
1142 - mxchat_activate();
1143 - }
1144 -}
1145 -
1146 -/**
1147 - * Clean up orphaned chat history options from the wp_options table
1148 - * @return int Number of options deleted
1149 - */
1150 -function mxchat_cleanup_orphaned_chat_history() {
1151 - global $wpdb;
1152 - $count = 0;
1153 -
1154 - // Get all option keys that match our pattern
1155 - $history_options = $wpdb->get_results(
1156 - "SELECT option_name FROM {$wpdb->options}
1157 - WHERE option_name LIKE 'mxchat_history_%'"
1158 - );
1159 -
1160 - if (!empty($history_options)) {
1161 - foreach ($history_options as $option) {
1162 - // Extract the session ID from the option name
1163 - $session_id = str_replace('mxchat_history_', '', $option->option_name);
1164 -
1165 - // Check if this session still exists in the custom table
1166 - $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
1167 - $exists = $wpdb->get_var(
1168 - $wpdb->prepare(
1169 - "SELECT COUNT(*) FROM {$table_name} WHERE session_id = %s",
1170 - $session_id
1171 - )
1172 - );
1173 -
1174 - // If session doesn't exist in the main table, delete the option
1175 - if ($exists == 0) {
1176 - delete_option($option->option_name);
1177 - // Also delete related metadata
1178 - delete_option("mxchat_email_{$session_id}");
1179 - delete_option("mxchat_name_{$session_id}");
1180 - delete_option("mxchat_agent_name_{$session_id}");
1181 - $count++;
1182 - }
1183 - }
1184 - }
1185 -
1186 - return $count;
1187 -}
1188 -
1189 -function mxchat_migrate_live_agent_status() {
1190 - $options = get_option('mxchat_options', []);
1191 -
1192 - // Check if live_agent_status exists
1193 - if (isset($options['live_agent_status'])) {
1194 - $current_status = $options['live_agent_status'];
1195 - $needs_update = false;
1196 -
1197 - // Convert to new format if needed
1198 - if ($current_status === 'online') {
1199 - $options['live_agent_status'] = 'on';
1200 - $needs_update = true;
1201 - } else if ($current_status === 'offline') {
1202 - $options['live_agent_status'] = 'off';
1203 - $needs_update = true;
1204 - } else if (!in_array($current_status, ['on', 'off'])) {
1205 - // Default to off for any unexpected values
1206 - $options['live_agent_status'] = 'off';
1207 - $needs_update = true;
1208 - }
1209 -
1210 - // Only update if needed
1211 - if ($needs_update) {
1212 - update_option('mxchat_options', $options);
1213 - }
1214 - } else {
1215 - // If status doesn't exist, set default to off
1216 - $options['live_agent_status'] = 'off';
1217 - update_option('mxchat_options', $options);
1218 - }
1219 -}
1220 -
1221 -function mxchat_handle_live_agent_update() {
1222 - // Get the CURRENT stored version (before it gets updated)
1223 - $current_version = get_option('mxchat_plugin_version', '0.0.0');
1224 - $new_version = '2.2.2';
1225 -
1226 - // Only run this once for the update to 2.2.2
1227 - $update_handled = get_option('mxchat_live_agent_update_2_2_2_handled', false);
1228 -
1229 - // Check if we're upgrading TO 2.2.2 and haven't handled this yet
1230 - if (version_compare($current_version, $new_version, '<') && !$update_handled) {
1231 - $options = get_option('mxchat_options', array());
1232 -
1233 - // Check if live agent was previously enabled
1234 - if (isset($options['live_agent_status']) && $options['live_agent_status'] === 'on') {
1235 - // Disable live agent
1236 - $options['live_agent_status'] = 'off';
1237 - update_option('mxchat_options', $options);
1238 -
1239 - // Set flag to show the notification banner
1240 - update_option('mxchat_show_live_agent_disabled_notice', true);
1241 - }
1242 -
1243 - // Mark this update as handled
1244 - update_option('mxchat_live_agent_update_2_2_2_handled', true);
1245 - }
1246 -}
1247 -
1248 -/**
1249 - * Handle theme migration notice for version 3.0.1
1250 - * Shows a dismissible notice to Pro users about migrating AI-generated themes
1251 - */
1252 -function mxchat_handle_theme_migration_notice() {
1253 - // Get the CURRENT stored version (before it gets updated)
1254 - $current_version = get_option('mxchat_plugin_version', '0.0.0');
1255 - $target_version = '3.0.1';
1256 -
1257 - // Only run this once for the update to 3.0.1
1258 - $update_handled = get_option('mxchat_theme_migration_update_3_0_1_handled', false);
1259 -
1260 - // Check if we're upgrading TO 3.0.1 and haven't handled this yet
1261 - if (version_compare($current_version, $target_version, '<') && !$update_handled) {
1262 - // Check if Pro is activated - only show to Pro users
1263 - $license_status = get_option('mxchat_license_status', 'inactive');
1264 - $is_pro = ($license_status === 'active');
1265 -
1266 - if ($is_pro) {
1267 - // Set flag to show the theme migration notification banner
1268 - update_option('mxchat_show_theme_migration_notice', true);
1269 - }
1270 -
1271 - // Mark this update as handled (whether Pro or not)
1272 - update_option('mxchat_theme_migration_update_3_0_1_handled', true);
1273 - }
1274 -}
1275 -
1276 -// Initialize plugin safely
1277 -function mxchat_init() {
1278 - // Include all class files first
1279 - mxchat_include_classes();
1280 -
1281 - // Run update check (this also ensures tables exist)
1282 - mxchat_check_for_update();
1283 -
1284 - // CRITICAL: Ensure tables exist on admin pages (safety net)
1285 - add_action('admin_init', 'mxchat_ensure_tables_exist', 1);
1286 -
1287 - // Add fallback rate limit check
1288 - add_action('init', 'mxchat_check_fallback_rate_limits', 5);
1289 -
1290 - // Add migration notice hook
1291 - add_action('admin_notices', 'mxchat_show_migration_notice');
1292 -
1293 - // Initialize classes with error handling
1294 - try {
1295 - // Initialize admin classes
1296 - if (is_admin()) {
1297 - if (class_exists('MxChat_Knowledge_Manager')) {
1298 - $mxchat_knowledge_manager = new MxChat_Knowledge_Manager();
1299 -
1300 - if (class_exists('MxChat_Admin')) {
1301 - $mxchat_admin = new MxChat_Admin($mxchat_knowledge_manager);
1302 - }
1303 - }
1304 -
1305 - // Initialize meta box class
1306 - if (class_exists('MxChat_Meta_Box')) {
1307 - new MxChat_Meta_Box();
1308 - }
1309 -
1310 - }
1311 -
1312 - // Initialize content generator globally — it registers wp_head hook
1313 - // for frontend CSS injection, plus wp_ajax_ hooks for admin.
1314 - if (class_exists('MxChat_Content_Generator')) {
1315 - new MxChat_Content_Generator();
1316 - }
1317 -
1318 - // Initialize public classes
1319 - if (class_exists('MxChat_Public')) {
1320 - $mxchat_public = new MxChat_Public();
1321 - }
1322 -
1323 - if (class_exists('MxChat_Integrator')) {
1324 - global $mxchat_integrator;
1325 - $mxchat_integrator = new MxChat_Integrator();
1326 - }
1327 -
1328 - } catch (Exception $e) {
1329 - //error_log('MxChat initialization error: ' . $e->getMessage());
1330 -
1331 - // Show admin notice if there's an error
1332 - if (is_admin()) {
1333 - add_action('admin_notices', function() use ($e) {
1334 - echo '<div class="notice notice-error"><p>';
1335 - echo '<strong>MxChat Error:</strong> Plugin initialization failed. ';
1336 - echo 'Please check error logs or contact support. Error: ' . esc_html($e->getMessage());
1337 - echo '</p></div>';
1338 - });
1339 - }
1340 - }
1341 -}
1342 -
1343 -// Run initialization on plugins_loaded
1344 -add_action('plugins_loaded', 'mxchat_init');
1345 -
1346 -// Run migration check on admin init (for auto-updates without reactivation)
1347 -add_action('admin_init', 'mxchat_check_and_run_migrations');
1348 -
1349 -/**
1350 - * Check and run migrations on admin init
1351 - * This ensures migrations run even when plugin is auto-updated
1352 - */
1353 -function mxchat_check_and_run_migrations() {
1354 - // Only run in admin and not on every request
1355 - static $checked = false;
1356 - if ($checked) {
1357 - return;
1358 - }
1359 - $checked = true;
1360 -
1361 - mxchat_migrate_pinecone_roles_add_bot_id();
1362 - mxchat_migrate_add_content_type_column();
1363 - mxchat_migrate_add_translations_table();
1364 -}
1365 -
1366 -/**
1367 - * Migration: Create transcript translations table (v3.0.4)
1368 - * For users upgrading from versions before 3.0.4
1369 - */
1370 -function mxchat_migrate_add_translations_table() {
1371 - $migration_key = 'mxchat_translations_table_created';
1372 -
1373 - // Check if migration already ran
1374 - if (get_option($migration_key)) {
1375 - return;
1376 - }
1377 -
1378 - // Create the translations table
1379 - mxchat_create_translations_table();
1380 -
1381 - // Mark migration as complete
1382 - update_option($migration_key, '3.0.4');
1383 -}
1384 -
1385 -/**
1386 - * Migration: Update deprecated Gemini embedding model (v3.0.5)
1387 - * Updates gemini-embedding-exp-03-07 to gemini-embedding-001 for users who had it selected
1388 - */
1389 -function mxchat_migrate_gemini_embedding_model() {
1390 - $options = get_option('mxchat_options', array());
1391 -
1392 - if (isset($options['embedding_model']) && $options['embedding_model'] === 'gemini-embedding-exp-03-07') {
1393 - $options['embedding_model'] = 'gemini-embedding-001';
1394 - update_option('mxchat_options', $options);
1395 - }
1396 -}
1397 -
1398 -// Register activation hook
1399 -register_activation_hook(__FILE__, 'mxchat_activate');
1400 -
1401 -// Add cron schedule
1402 -add_filter('cron_schedules', function($schedules) {
1403 - $schedules['one_minute'] = array(
1404 - 'interval' => 60,
1405 - 'display' => 'Every Minute'
1406 - );
1407 - return $schedules;
1408 -});
1409 -
1410 -// 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: 3.1.2
7 + * Author: MxChat
8 + * Author URI: https://mxchat.ai
9 + * License: GPLv2 or later
10 + * License URI: https://www.gnu.org/licenses/gpl-2.0.html
11 + * Text Domain: mxchat
12 + * Domain Path: /languages
13 + */
14 +
15 +if (!defined('ABSPATH')) {
16 + exit; // Exit if accessed directly.
17 +}
18 +
19 +// Define plugin version constant for asset versioning
20 +// Reads version from plugin header automatically
21 +if (!defined('MXCHAT_VERSION')) {
22 + $plugin_data = get_file_data(__FILE__, array('Version' => 'Version'), 'plugin');
23 + define('MXCHAT_VERSION', $plugin_data['Version']);
24 +}
25 +
26 +function mxchat_load_textdomain() {
27 + $domain = 'mxchat';
28 + $locale = determine_locale();
29 +
30 + // First, try to load from /wp-content/languages/plugins/ (preserved during updates)
31 + $mo_file = WP_LANG_DIR . '/plugins/' . $domain . '-' . $locale . '.mo';
32 + if (file_exists($mo_file)) {
33 + load_textdomain($domain, $mo_file);
34 + return;
35 + }
36 +
37 + // Fallback to plugin's /languages directory
38 + load_plugin_textdomain($domain, false, dirname(plugin_basename(__FILE__)) . '/languages');
39 +}
40 +add_action('init', 'mxchat_load_textdomain');
41 +
42 +/**
43 + * Exclude MxChat assets from caching plugin optimizations
44 + *
45 + * This prevents issues with WP Rocket, LiteSpeed Cache, Autoptimize, WP Super Cache,
46 + * W3 Total Cache, SG Optimizer, and similar plugins that may break the chatbot by
47 + * removing "unused" CSS, minifying/combining JS, or deferring/delaying jQuery.
48 + *
49 + * Both chat-script.js and floating-script.js depend on jQuery, so jQuery must also
50 + * be excluded from any optimization that changes load order or timing.
51 + */
52 +
53 +// ── WP Rocket ────────────────────────────────────────────────────────────────
54 +
55 +// Exclude from Remove Unused CSS (RUCSS)
56 +add_filter('rocket_rucss_inline_atts_exclusions', function($exclusions) {
57 + if (!is_array($exclusions)) $exclusions = array();
58 + $exclusions[] = 'mxchat';
59 + return $exclusions;
60 +});
61 +
62 +// Exclude CSS from minification/combination
63 +add_filter('rocket_exclude_css', function($excluded) {
64 + if (!is_array($excluded)) $excluded = array();
65 + $excluded[] = '/plugins/mxchat-basic/css/chat-style.css';
66 + return $excluded;
67 +});
68 +
69 +// Exclude JS from minification/combination
70 +add_filter('rocket_exclude_js', function($excluded) {
71 + if (!is_array($excluded)) $excluded = array();
72 + $excluded[] = '/plugins/mxchat-basic/js/chat-script.js';
73 + $excluded[] = '/plugins/mxchat-basic/js/floating-script.js';
74 + $excluded[] = '/jquery-core';
75 + $excluded[] = '/jquery.min.js';
76 + $excluded[] = '/jquery.js';
77 + $excluded[] = '/jquery-migrate';
78 + return $excluded;
79 +});
80 +
81 +// Exclude JS from defer
82 +add_filter('rocket_exclude_defer_js', function($excluded) {
83 + if (!is_array($excluded)) $excluded = array();
84 + $excluded[] = '/plugins/mxchat-basic/js/chat-script.js';
85 + $excluded[] = '/plugins/mxchat-basic/js/floating-script.js';
86 + $excluded[] = '/jquery-core';
87 + $excluded[] = '/jquery.min.js';
88 + $excluded[] = '/jquery.js';
89 + $excluded[] = '/jquery-migrate';
90 + return $excluded;
91 +});
92 +
93 +// Exclude from delay JS execution
94 +add_filter('rocket_delay_js_exclusions', function($excluded) {
95 + if (!is_array($excluded)) $excluded = array();
96 + $excluded[] = 'mxchat';
97 + $excluded[] = 'chat-script';
98 + $excluded[] = 'floating-script';
99 + $excluded[] = '/jquery-core';
100 + $excluded[] = '/jquery.min.js';
101 + $excluded[] = '/jquery.js';
102 + $excluded[] = '/jquery-migrate';
103 + return $excluded;
104 +});
105 +
106 +// ── LiteSpeed Cache ──────────────────────────────────────────────────────────
107 +
108 +// Exclude CSS from optimization
109 +add_filter('litespeed_optimize_css_excludes', function($excluded) {
110 + if (!is_array($excluded)) $excluded = array();
111 + $excluded[] = 'chat-style.css';
112 + $excluded[] = 'mxchat';
113 + return $excluded;
114 +});
115 +
116 +// Exclude from UCSS (Unique CSS) - prevents LiteSpeed from stripping "unused" MxChat CSS
117 +add_filter('litespeed_ucss_whitelist', function($whitelist) {
118 + if (!is_array($whitelist)) $whitelist = array();
119 + $whitelist[] = '.mxchat-chatbot-wrapper';
120 + $whitelist[] = '.floating-chatbot';
121 + $whitelist[] = '.floating-chatbot-button';
122 + $whitelist[] = '.chatbot-top-bar';
123 + $whitelist[] = '.mxchat-chatbot';
124 + $whitelist[] = '.chat-container';
125 + $whitelist[] = '.chat-box';
126 + $whitelist[] = '.bot-message';
127 + $whitelist[] = '.input-container';
128 + $whitelist[] = '.chat-input';
129 + $whitelist[] = '.send-button';
130 + $whitelist[] = '.pre-chat-message';
131 + $whitelist[] = '.mxchat-popular-questions';
132 + $whitelist[] = '.chat-toolbar';
133 + $whitelist[] = '.exit-chat';
134 + $whitelist[] = '.email-blocker';
135 + return $whitelist;
136 +});
137 +
138 +// Exclude CSS from CCSS (Critical CSS) generation
139 +add_filter('litespeed_optm_ccss_exc', function($excluded) {
140 + if (!is_array($excluded)) $excluded = array();
141 + $excluded[] = 'chat-style.css';
142 + $excluded[] = 'mxchat';
143 + return $excluded;
144 +});
145 +
146 +// Exclude JS from defer
147 +add_filter('litespeed_optm_js_defer_exc', function($excluded) {
148 + if (!is_array($excluded)) $excluded = array();
149 + $excluded[] = 'chat-script.js';
150 + $excluded[] = 'floating-script.js';
151 + $excluded[] = 'mxchat';
152 + $excluded[] = 'jquery.min.js';
153 + $excluded[] = 'jquery.js';
154 + return $excluded;
155 +});
156 +
157 +// Exclude JS from combining
158 +add_filter('litespeed_optm_js_exc', function($excluded) {
159 + if (!is_array($excluded)) $excluded = array();
160 + $excluded[] = 'chat-script.js';
161 + $excluded[] = 'floating-script.js';
162 + $excluded[] = 'mxchat';
163 + $excluded[] = 'jquery.min.js';
164 + $excluded[] = 'jquery.js';
165 + return $excluded;
166 +});
167 +
168 +// Exclude JS from delayed execution
169 +add_filter('litespeed_optm_js_delay_exc', function($excluded) {
170 + if (!is_array($excluded)) $excluded = array();
171 + $excluded[] = 'chat-script.js';
172 + $excluded[] = 'floating-script.js';
173 + $excluded[] = 'mxchat';
174 + return $excluded;
175 +});
176 +
177 +// Exclude from Guest Mode optimization
178 +add_filter('litespeed_guest_optm_exc', function($excluded) {
179 + if (!is_array($excluded)) $excluded = array();
180 + $excluded[] = 'mxchat';
181 + $excluded[] = 'chat-style';
182 + $excluded[] = 'chat-script';
183 + $excluded[] = 'floating-script';
184 + return $excluded;
185 +});
186 +
187 +// ── Autoptimize ──────────────────────────────────────────────────────────────
188 +
189 +// Exclude CSS from optimization (comma-separated strings)
190 +add_filter('autoptimize_filter_css_exclude', function($excluded) {
191 + if (!is_string($excluded)) $excluded = '';
192 + return $excluded . ', mxchat, chat-style.css';
193 +});
194 +
195 +// Exclude JS from optimization (comma-separated strings)
196 +add_filter('autoptimize_filter_js_exclude', function($excluded) {
197 + if (!is_string($excluded)) $excluded = '';
198 + return $excluded . ', mxchat, chat-script.js, floating-script.js, jquery.min.js, jquery.js';
199 +});
200 +
201 +// ── SG Optimizer (SiteGround) ────────────────────────────────────────────────
202 +
203 +add_filter('sgo_js_minify_exclude', function($excluded) {
204 + if (!is_array($excluded)) $excluded = array();
205 + $excluded[] = 'chat-script.js';
206 + $excluded[] = 'floating-script.js';
207 + $excluded[] = 'jquery.min.js';
208 + return $excluded;
209 +});
210 +
211 +add_filter('sgo_javascript_combine_exclude', function($excluded) {
212 + if (!is_array($excluded)) $excluded = array();
213 + $excluded[] = 'chat-script.js';
214 + $excluded[] = 'floating-script.js';
215 + $excluded[] = 'jquery.min.js';
216 + return $excluded;
217 +});
218 +
219 +add_filter('sgo_js_async_exclude', function($excluded) {
220 + if (!is_array($excluded)) $excluded = array();
221 + $excluded[] = 'chat-script.js';
222 + $excluded[] = 'floating-script.js';
223 + $excluded[] = 'jquery.min.js';
224 + return $excluded;
225 +});
226 +
227 +// ── W3 Total Cache ───────────────────────────────────────────────────────────
228 +
229 +add_filter('w3tc_minify_js_do_tag_minification', function($do_minify, $script_tag, $file) {
230 + if (strpos($file, 'chat-script.js') !== false ||
231 + strpos($file, 'floating-script.js') !== false ||
232 + strpos($file, 'jquery.min.js') !== false ||
233 + strpos($file, 'jquery.js') !== false) {
234 + return false;
235 + }
236 + return $do_minify;
237 +}, 10, 3);
238 +
239 +// ── WP Super Cache ──────────────────────────────────────────────────────────
240 +
241 +add_filter('wpsc_rejected_uri', function($rejected) {
242 + if (!is_array($rejected)) $rejected = array();
243 + $rejected[] = 'wp-admin/admin-ajax.php';
244 + return $rejected;
245 +});
246 +
247 +// Include classes with error handling
248 +function mxchat_include_classes() {
249 + $class_files = array(
250 + 'includes/class-mxchat-integrator.php',
251 + 'includes/class-mxchat-admin.php',
252 + 'includes/class-mxchat-public.php',
253 + 'includes/class-mxchat-utils.php',
254 + 'includes/class-mxchat-user.php',
255 + 'includes/class-mxchat-meta-box.php',
256 + 'includes/class-mxchat-chunker.php',
257 + 'includes/class-mxchat-word-handler.php',
258 + 'includes/class-mxchat-content-generator.php',
259 + 'admin/class-ajax-handler.php',
260 + 'admin/class-pinecone-manager.php',
261 + 'admin/class-knowledge-manager.php'
262 + );
263 +
264 + foreach ($class_files as $file) {
265 + $file_path = plugin_dir_path(__FILE__) . $file;
266 + if (file_exists($file_path)) {
267 + require_once $file_path;
268 + } else {
269 + //error_log('MxChat: Missing class file - ' . $file);
270 + }
271 + }
272 +}
273 +
274 +/**
275 + * Lazy-load the PDF parser library only when needed.
276 + * Avoids loading 44 files on every page request.
277 + */
278 +function mxchat_load_pdf_parser() {
279 + if (class_exists('\Smalot\PdfParser\Parser')) {
280 + return true;
281 + }
282 + $autoload_path = plugin_dir_path(__FILE__) . 'includes/pdf-parser/alt_autoload.php';
283 + if (file_exists($autoload_path)) {
284 + require_once $autoload_path;
285 + return true;
286 + }
287 + return false;
288 +}
289 +
290 +/**
291 + * Create URL click tracking table
292 + */
293 +function mxchat_create_url_clicks_table() {
294 + global $wpdb;
295 +
296 + $table_name = $wpdb->prefix . 'mxchat_url_clicks';
297 +
298 + $charset_collate = $wpdb->get_charset_collate();
299 +
300 + $sql = "CREATE TABLE $table_name (
301 + id mediumint(9) NOT NULL AUTO_INCREMENT,
302 + session_id varchar(100) NOT NULL,
303 + clicked_url text NOT NULL,
304 + message_context text,
305 + click_timestamp datetime DEFAULT CURRENT_TIMESTAMP,
306 + user_ip varchar(45),
307 + user_agent text,
308 + PRIMARY KEY (id),
309 + KEY session_id (session_id),
310 + KEY click_timestamp (click_timestamp)
311 + ) $charset_collate;";
312 +
313 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
314 + dbDelta($sql);
315 +}
316 +
317 +/**
318 + * FIXED: Robust table creation and column management
319 + */
320 +function mxchat_create_chat_transcripts_table() {
321 + global $wpdb;
322 +
323 + $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
324 + $charset_collate = $wpdb->get_charset_collate();
325 +
326 + // Create table with ALL columns including user_name from the start
327 + $sql = "CREATE TABLE $table_name (
328 + id MEDIUMINT(9) NOT NULL AUTO_INCREMENT,
329 + user_id MEDIUMINT(9) DEFAULT 0,
330 + session_id VARCHAR(255) NOT NULL,
331 + role VARCHAR(255) NOT NULL,
332 + message TEXT NOT NULL,
333 + user_email VARCHAR(255) DEFAULT NULL,
334 + user_name VARCHAR(100) DEFAULT NULL,
335 + user_identifier VARCHAR(255) DEFAULT NULL,
336 + originating_page_url TEXT DEFAULT NULL,
337 + originating_page_title VARCHAR(500) DEFAULT NULL,
338 + timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
339 + PRIMARY KEY (id),
340 + KEY session_id (session_id),
341 + KEY user_email (user_email),
342 + KEY timestamp (timestamp)
343 + ) $charset_collate;";
344 +
345 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
346 + $result = dbDelta($sql);
347 +
348 + // Log the result for debugging
349 + if (empty($result)) {
350 + //error_log("MxChat: dbDelta returned empty result for chat transcripts table");
351 + } else {
352 + //error_log("MxChat: dbDelta result: " . print_r($result, true));
353 + }
354 +
355 + // IMPORTANT: Ensure all columns exist for existing installations
356 + mxchat_ensure_all_columns($table_name);
357 +}
358 +
359 +/**
360 + * Ensure all required columns exist (for upgrades)
361 + */
362 +function mxchat_ensure_all_columns($table_name) {
363 + global $wpdb;
364 +
365 + // First check if table exists
366 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
367 + if (!$table_exists) {
368 + //error_log("MxChat: Table $table_name does not exist, cannot add columns");
369 + return;
370 + }
371 +
372 + // Define all required columns and their types
373 + $required_columns = [
374 + 'user_identifier' => 'VARCHAR(255) DEFAULT NULL',
375 + 'user_email' => 'VARCHAR(255) DEFAULT NULL',
376 + 'user_name' => 'VARCHAR(100) DEFAULT NULL',
377 + 'originating_page_url' => 'TEXT DEFAULT NULL',
378 + 'originating_page_title' => 'VARCHAR(500) DEFAULT NULL',
379 + 'rag_context' => 'LONGTEXT DEFAULT NULL'
380 + ];
381 +
382 + // Get existing columns
383 + $existing_columns = $wpdb->get_results("SHOW COLUMNS FROM $table_name");
384 + if (empty($existing_columns)) {
385 + //error_log("MxChat: Could not get columns for table $table_name");
386 + return;
387 + }
388 +
389 + $existing_column_names = array_column($existing_columns, 'Field');
390 +
391 + // Add missing columns
392 + foreach ($required_columns as $column_name => $column_definition) {
393 + if (!in_array($column_name, $existing_column_names)) {
394 + $alter_sql = "ALTER TABLE $table_name ADD COLUMN $column_name $column_definition";
395 + $result = $wpdb->query($alter_sql);
396 +
397 + if ($result === false) {
398 + //error_log("MxChat: Failed to add column $column_name to $table_name. Error: " . $wpdb->last_error);
399 + } else {
400 + //error_log("MxChat: Successfully added column $column_name to $table_name");
401 + }
402 + }
403 + }
404 +}
405 +
406 +/**
407 + * Add role restriction column to knowledge base table
408 + */
409 +function mxchat_add_role_restriction_column() {
410 + global $wpdb;
411 + $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
412 +
413 + // Check if table exists first
414 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
415 + if (!$table_exists) {
416 + //error_log("MxChat: System prompt content table does not exist, cannot add role_restriction column");
417 + return;
418 + }
419 +
420 + // Check if column already exists
421 + $column_exists = $wpdb->get_results(
422 + $wpdb->prepare(
423 + "SHOW COLUMNS FROM {$table_name} LIKE %s",
424 + 'role_restriction'
425 + )
426 + );
427 +
428 + if (empty($column_exists)) {
429 + $alter_sql = "ALTER TABLE {$table_name} ADD COLUMN role_restriction VARCHAR(50) DEFAULT 'public' AFTER source_url";
430 + $result = $wpdb->query($alter_sql);
431 +
432 + if ($result === false) {
433 + //error_log("MxChat: Failed to add role_restriction column. Error: " . $wpdb->last_error);
434 + } else {
435 + //error_log("MxChat: Successfully added role_restriction column");
436 +
437 + // Set all existing records to 'public' (everyone can access)
438 + $update_result = $wpdb->query(
439 + "UPDATE {$table_name}
440 + SET role_restriction = 'public'
441 + WHERE role_restriction IS NULL OR role_restriction = ''"
442 + );
443 +
444 + if ($update_result !== false) {
445 + //error_log("MxChat: Updated {$update_result} existing records to public access");
446 + }
447 + }
448 + }
449 +}
450 +
451 +/**
452 + * Add enabled_bots column to intents table for multi-bot action filtering
453 + */
454 +function mxchat_add_enabled_bots_column() {
455 + global $wpdb;
456 + $table_name = $wpdb->prefix . 'mxchat_intents';
457 +
458 + // Check if table exists first
459 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
460 + if (!$table_exists) {
461 + //error_log("MxChat: Intents table does not exist, cannot add enabled_bots column");
462 + return;
463 + }
464 +
465 + // Check if column already exists
466 + $column_exists = $wpdb->get_results(
467 + $wpdb->prepare(
468 + "SHOW COLUMNS FROM {$table_name} LIKE %s",
469 + 'enabled_bots'
470 + )
471 + );
472 +
473 + if (empty($column_exists)) {
474 + $alter_sql = "ALTER TABLE {$table_name} ADD COLUMN enabled_bots LONGTEXT DEFAULT NULL AFTER enabled";
475 + $result = $wpdb->query($alter_sql);
476 +
477 + if ($result === false) {
478 + //error_log("MxChat: Failed to add enabled_bots column. Error: " . $wpdb->last_error);
479 + } else {
480 + //error_log("MxChat: Successfully added enabled_bots column");
481 +
482 + // Set all existing actions to work with 'default' bot for backward compatibility
483 + $default_bots = json_encode(['default']);
484 + $update_result = $wpdb->query(
485 + $wpdb->prepare(
486 + "UPDATE {$table_name}
487 + SET enabled_bots = %s
488 + WHERE enabled_bots IS NULL OR enabled_bots = ''",
489 + $default_bots
490 + )
491 + );
492 +
493 + if ($update_result !== false) {
494 + //error_log("MxChat: Updated {$update_result} existing actions to work with default bot");
495 + }
496 + }
497 + }
498 +}
499 +
500 +/**
501 + * Create Pinecone role restrictions table with multi-bot support
502 + */
503 +function mxchat_create_pinecone_roles_table() {
504 + global $wpdb;
505 +
506 + $table_name = $wpdb->prefix . 'mxchat_pinecone_roles';
507 + $charset_collate = $wpdb->get_charset_collate();
508 +
509 + $sql = "CREATE TABLE $table_name (
510 + id mediumint(9) NOT NULL AUTO_INCREMENT,
511 + vector_id varchar(255) NOT NULL,
512 + bot_id varchar(50) NOT NULL DEFAULT 'default',
513 + source_url text,
514 + role_restriction varchar(50) DEFAULT 'public',
515 + updated_at timestamp DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
516 + PRIMARY KEY (id),
517 + UNIQUE KEY vector_bot (vector_id, bot_id),
518 + KEY role_restriction (role_restriction),
519 + KEY bot_id (bot_id)
520 + ) $charset_collate;";
521 +
522 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
523 + dbDelta($sql);
524 +}
525 +
526 +/**
527 + * Add bot_id column to mxchat_pinecone_roles table for multi-bot support
528 + * This migration runs once to update existing installations
529 + */
530 +function mxchat_migrate_pinecone_roles_add_bot_id() {
531 + global $wpdb;
532 +
533 + // Check if migration already ran
534 + $migration_version = get_option('mxchat_pinecone_roles_migration_version', '0');
535 + if (version_compare($migration_version, '2.5.2', '>=')) {
536 + return; // Already migrated
537 + }
538 +
539 + $table_name = $wpdb->prefix . 'mxchat_pinecone_roles';
540 +
541 + // Check if table exists
542 + if ($wpdb->get_var("SHOW TABLES LIKE '{$table_name}'") != $table_name) {
543 + return; // Table doesn't exist yet
544 + }
545 +
546 + // Check if bot_id column already exists
547 + $column_exists = $wpdb->get_results("SHOW COLUMNS FROM {$table_name} LIKE 'bot_id'");
548 +
549 + if (empty($column_exists)) {
550 + // Add bot_id column
551 + $wpdb->query("ALTER TABLE {$table_name} ADD COLUMN bot_id VARCHAR(50) NOT NULL DEFAULT 'default' AFTER vector_id");
552 +
553 + // Update the unique key to include bot_id
554 + $wpdb->query("ALTER TABLE {$table_name} DROP INDEX vector_id");
555 + $wpdb->query("ALTER TABLE {$table_name} ADD UNIQUE KEY vector_bot (vector_id, bot_id)");
556 +
557 + // Add index for bot_id
558 + $wpdb->query("ALTER TABLE {$table_name} ADD KEY bot_id (bot_id)");
559 +
560 + error_log('MxChat: Successfully added bot_id column to mxchat_pinecone_roles table');
561 + }
562 +
563 + // Mark migration as complete
564 + update_option('mxchat_pinecone_roles_migration_version', '2.5.2');
565 +}
566 +
567 +/**
568 + * 2.5.6: Add content_type column to mxchat_system_prompt_content table
569 + * Enables filtering knowledge base by content type (posts, pages, PDFs, etc.)
570 + */
571 +function mxchat_migrate_add_content_type_column() {
572 + global $wpdb;
573 +
574 + // Check if migration already ran
575 + $migration_version = get_option('mxchat_content_type_migration_version', '0');
576 + if (version_compare($migration_version, '2.5.6', '>=')) {
577 + return;
578 + }
579 +
580 + $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
581 +
582 + // Check if table exists
583 + if ($wpdb->get_var("SHOW TABLES LIKE '{$table_name}'") != $table_name) {
584 + return;
585 + }
586 +
587 + // Check if content_type column already exists
588 + $column_exists = $wpdb->get_results("SHOW COLUMNS FROM {$table_name} LIKE 'content_type'");
589 +
590 + if (empty($column_exists)) {
591 + // Add content_type column with default value 'content' for backwards compatibility
592 + $wpdb->query("ALTER TABLE {$table_name} ADD COLUMN content_type VARCHAR(50) DEFAULT 'content' AFTER role_restriction");
593 +
594 + // Add index for better query performance
595 + $wpdb->query("ALTER TABLE {$table_name} ADD KEY content_type (content_type)");
596 +
597 + error_log('MxChat: Successfully added content_type column to mxchat_system_prompt_content table');
598 + }
599 +
600 + // Mark migration as complete
601 + update_option('mxchat_content_type_migration_version', '2.5.6');
602 +}
603 +
604 +/**
605 + * 2.5.2: Create queue processing tables for reliable background processing
606 + */
607 +function mxchat_create_queue_tables() {
608 + global $wpdb;
609 + $charset_collate = $wpdb->get_charset_collate();
610 +
611 + // Main queue table
612 + $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
613 + $sql_queue = "CREATE TABLE $queue_table (
614 + id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
615 + queue_id varchar(64) NOT NULL,
616 + item_type varchar(20) NOT NULL,
617 + item_data longtext NOT NULL,
618 + status varchar(20) NOT NULL DEFAULT 'pending',
619 + bot_id varchar(50) NOT NULL DEFAULT 'default',
620 + priority int(11) NOT NULL DEFAULT 0,
621 + attempts int(11) NOT NULL DEFAULT 0,
622 + max_attempts int(11) NOT NULL DEFAULT 3,
623 + error_message text DEFAULT NULL,
624 + created_at datetime NOT NULL,
625 + started_at datetime DEFAULT NULL,
626 + completed_at datetime DEFAULT NULL,
627 + PRIMARY KEY (id),
628 + KEY queue_id (queue_id),
629 + KEY status (status),
630 + KEY item_type (item_type),
631 + KEY priority (priority)
632 + ) $charset_collate;";
633 +
634 + // Queue metadata table
635 + $meta_table = $wpdb->prefix . 'mxchat_queue_meta';
636 + $sql_meta = "CREATE TABLE $meta_table (
637 + id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
638 + queue_id varchar(64) NOT NULL,
639 + meta_key varchar(255) NOT NULL,
640 + meta_value longtext,
641 + PRIMARY KEY (id),
642 + KEY queue_id (queue_id),
643 + KEY meta_key (meta_key)
644 + ) $charset_collate;";
645 +
646 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
647 + dbDelta($sql_queue);
648 + dbDelta($sql_meta);
649 +
650 + //error_log("MxChat: Queue tables created/updated successfully");
651 +}
652 +
653 +/**
654 + * Create transcript translations table for persisting translations
655 + */
656 +function mxchat_create_translations_table() {
657 + global $wpdb;
658 + $charset_collate = $wpdb->get_charset_collate();
659 +
660 + $table_name = $wpdb->prefix . 'mxchat_transcript_translations';
661 + $sql = "CREATE TABLE $table_name (
662 + id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
663 + session_id varchar(255) NOT NULL,
664 + language_code varchar(10) NOT NULL,
665 + translations longtext NOT NULL,
666 + created_at datetime NOT NULL,
667 + updated_at datetime NOT NULL,
668 + PRIMARY KEY (id),
669 + UNIQUE KEY session_lang (session_id, language_code),
670 + KEY session_id (session_id)
671 + ) $charset_collate;";
672 +
673 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
674 + dbDelta($sql);
675 +}
676 +
677 +/**
678 + * 2.5.2: Fix URL column size to support long URLs (especially with UTF-8 encoding)
679 + * This fixes "url, source_url. The supplied values may be too long" errors
680 + */
681 +function mxchat_fix_url_column_size() {
682 + global $wpdb;
683 + $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
684 +
685 + // Check if table exists
686 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
687 + if (!$table_exists) {
688 + return;
689 + }
690 +
691 + // Change url and source_url from VARCHAR to TEXT to handle long URLs
692 + // This is especially important for URLs with UTF-8 encoded characters (Hebrew, Arabic, etc.)
693 + $wpdb->query("ALTER TABLE {$table_name} MODIFY COLUMN url TEXT");
694 + $wpdb->query("ALTER TABLE {$table_name} MODIFY COLUMN source_url TEXT");
695 +
696 + //error_log("MxChat: Successfully updated url and source_url columns to TEXT type for long URL support");
697 +}
698 +
699 +/**
700 + * Migrate deprecated AI models to their replacements
701 + * Version 2.5.1: Migrate Claude 3.5 Sonnet (deprecated) to Claude 3.7 Sonnet
702 + * Version 3.1.2: Convert chat transcripts table to utf8mb4 for emoji support
703 + * Without utf8mb4, any bot response containing emojis silently fails to insert.
704 + */
705 +function mxchat_migrate_transcripts_charset() {
706 + global $wpdb;
707 + $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
708 + $wpdb->query("ALTER TABLE $table_name CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci");
709 +}
710 +
711 +/**
712 + * Version 3.0.55: Migrate GPT-4 series models (deprecated 2026-02-17) to GPT-5 series
713 + */
714 +function mxchat_migrate_deprecated_models() {
715 + $options = get_option('mxchat_options', array());
716 + $migrated = false;
717 + $migration_message = '';
718 +
719 + if (!isset($options['model'])) {
720 + return;
721 + }
722 +
723 + $current_model = $options['model'];
724 +
725 + // Migrate deprecated Claude models to Claude Opus 4.6 (recommended replacement per Anthropic)
726 + $deprecated_claude_models = array(
727 + 'claude-3-5-sonnet-20240620', // Retired Oct 28, 2025
728 + 'claude-3-5-sonnet-20241022', // Retired Oct 28, 2025
729 + 'claude-3-7-sonnet-20250219', // Retiring Feb 19, 2026
730 + 'claude-3-opus-20240229', // Retired Jan 5, 2026
731 + 'claude-3-sonnet-20240229', // Legacy
732 + 'claude-3-haiku-20240307', // Legacy
733 + );
734 + if (in_array($current_model, $deprecated_claude_models, true)) {
735 + $options['model'] = 'claude-opus-4-6';
736 + $migrated = true;
737 + $migration_message = sprintf(
738 + __('Your chatbot model has been automatically updated from %s to Claude Opus 4.6 due to Anthropic deprecating older Claude models.', 'mxchat'),
739 + $current_model
740 + );
741 + }
742 +
743 + // Migrate deprecated Claude Haiku 3.5 to Claude Haiku 4.5
744 + if ($current_model === 'claude-3-5-haiku-20241022') {
745 + $options['model'] = 'claude-haiku-4-5-20251001';
746 + $migrated = true;
747 + $migration_message = __('Your chatbot model has been automatically updated from Claude Haiku 3.5 to Claude Haiku 4.5 due to Anthropic deprecating the older model.', 'mxchat');
748 + }
749 +
750 + // Migrate deprecated GPT-4 series and GPT-3.5 Turbo to GPT-5.1 Chat Latest
751 + if (in_array($current_model, array('gpt-4o', 'gpt-4.1-2025-04-14', 'gpt-4-turbo', 'gpt-4', 'gpt-3.5-turbo'), true)) {
752 + $options['model'] = 'gpt-5.1-chat-latest';
753 + $migrated = true;
754 + $migration_message = sprintf(
755 + __('Your chatbot model has been automatically updated from %s to GPT-5.1 Chat Latest due to OpenAI deprecating older models.', 'mxchat'),
756 + $current_model
757 + );
758 + }
759 +
760 + // Migrate deprecated GPT-4o Mini and GPT-4.1 Mini to GPT-5 Mini
761 + if (in_array($current_model, array('gpt-4o-mini', 'gpt-4.1-mini'), true)) {
762 + $options['model'] = 'gpt-5-mini';
763 + $migrated = true;
764 + $migration_message = sprintf(
765 + __('Your chatbot model has been automatically updated from %s to GPT-5 Mini due to OpenAI deprecating GPT-4 series models.', 'mxchat'),
766 + $current_model
767 + );
768 + }
769 +
770 + if ($migrated) {
771 + update_option('mxchat_options', $options);
772 + update_option('mxchat_model_migrated_notice', true);
773 + update_option('mxchat_model_migration_message', $migration_message);
774 + }
775 +}
776 +
777 +/**
778 + * Show admin notice after model migration
779 + */
780 +function mxchat_show_migration_notice() {
781 + if (get_option('mxchat_model_migrated_notice')) {
782 + $migration_message = get_option('mxchat_model_migration_message', __('Your chatbot model has been automatically updated due to a model deprecation.', 'mxchat'));
783 + ?>
784 + <div class="notice notice-info is-dismissible">
785 + <p>
786 + <strong><?php esc_html_e('MxChat Model Updated', 'mxchat'); ?></strong><br>
787 + <?php echo esc_html($migration_message); ?>
788 + </p>
789 + </div>
790 + <?php
791 + delete_option('mxchat_model_migrated_notice');
792 + delete_option('mxchat_model_migration_message');
793 + }
794 +}
795 +
796 +function mxchat_activate() {
797 + global $wpdb;
798 + $charset_collate = $wpdb->get_charset_collate();
799 +
800 + //error_log("MxChat: Running activation function");
801 +
802 + // Create chat transcripts table with improved function
803 + mxchat_create_chat_transcripts_table();
804 +
805 + // System Prompt Content Table - UPDATED: Use TEXT for url and source_url columns
806 + $system_prompt_table = $wpdb->prefix . 'mxchat_system_prompt_content';
807 + $sql_system_prompt = "CREATE TABLE $system_prompt_table (
808 + id MEDIUMINT(9) NOT NULL AUTO_INCREMENT,
809 + url TEXT NOT NULL,
810 + article_content LONGTEXT NOT NULL,
811 + embedding_vector LONGTEXT,
812 + source_url TEXT DEFAULT NULL,
813 + role_restriction VARCHAR(50) DEFAULT 'public',
814 + content_type VARCHAR(50) DEFAULT 'content',
815 + timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
816 + PRIMARY KEY (id),
817 + KEY content_type (content_type)
818 + ) $charset_collate;";
819 +
820 + // Intents Table - NOW INCLUDES enabled_bots column from the start
821 + $intents_table = $wpdb->prefix . 'mxchat_intents';
822 + $sql_intents_table = "CREATE TABLE $intents_table (
823 + id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
824 + intent_label VARCHAR(255) NOT NULL,
825 + phrases TEXT NOT NULL,
826 + embedding_vector LONGTEXT NOT NULL,
827 + callback_function VARCHAR(255) NOT NULL,
828 + similarity_threshold FLOAT DEFAULT 0.85,
829 + enabled TINYINT(1) NOT NULL DEFAULT 1,
830 + enabled_bots LONGTEXT DEFAULT NULL,
831 + PRIMARY KEY (id)
832 + ) $charset_collate;";
833 +
834 + require_once ABSPATH . 'wp-admin/includes/upgrade.php';
835 +
836 + // Create other tables
837 + dbDelta($sql_system_prompt);
838 + dbDelta($sql_intents_table);
839 +
840 + // Create URL click tracking table
841 + mxchat_create_url_clicks_table();
842 +
843 + // Create Pinecone roles table
844 + mxchat_create_pinecone_roles_table();
845 +
846 + // NEW 2.5.2: Create queue processing tables
847 + mxchat_create_queue_tables();
848 +
849 + // Create transcript translations table
850 + mxchat_create_translations_table();
851 +
852 + // Ensure additional columns in system prompt table
853 + $existing_system_columns = $wpdb->get_results("SHOW COLUMNS FROM $system_prompt_table");
854 + if (!empty($existing_system_columns)) {
855 + $existing_system_column_names = array_column($existing_system_columns, 'Field');
856 +
857 + if (!in_array('embedding_vector', $existing_system_column_names)) {
858 + $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN embedding_vector LONGTEXT");
859 + }
860 + if (!in_array('source_url', $existing_system_column_names)) {
861 + $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN source_url TEXT DEFAULT NULL");
862 + }
863 + if (!in_array('role_restriction', $existing_system_column_names)) {
864 + $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN role_restriction VARCHAR(50) DEFAULT 'public' AFTER source_url");
865 + }
866 + }
867 +
868 + // Set default thresholds for existing intents
869 + $wpdb->query("UPDATE {$intents_table} SET similarity_threshold = 0.85 WHERE similarity_threshold IS NULL");
870 +
871 + // Ensure enabled column exists in intents table
872 + $existing_intent_columns = $wpdb->get_results("SHOW COLUMNS FROM $intents_table");
873 + if (!empty($existing_intent_columns)) {
874 + $existing_intent_column_names = array_column($existing_intent_columns, 'Field');
875 +
876 + if (!in_array('enabled', $existing_intent_column_names)) {
877 + $wpdb->query("ALTER TABLE $intents_table ADD COLUMN enabled TINYINT(1) NOT NULL DEFAULT 1");
878 + }
879 +
880 + // Ensure enabled_bots column exists for existing installations
881 + if (!in_array('enabled_bots', $existing_intent_column_names)) {
882 + $wpdb->query("ALTER TABLE $intents_table ADD COLUMN enabled_bots LONGTEXT DEFAULT NULL AFTER enabled");
883 +
884 + // Set existing actions to work with default bot
885 + $default_bots = json_encode(['default']);
886 + $wpdb->query($wpdb->prepare(
887 + "UPDATE {$intents_table} SET enabled_bots = %s WHERE enabled_bots IS NULL",
888 + $default_bots
889 + ));
890 + }
891 + }
892 +
893 + // Run migration for existing installations
894 + mxchat_migrate_pinecone_roles_add_bot_id();
895 +
896 + // Setup cron jobs
897 + mxchat_setup_cron_jobs();
898 +
899 + // Update version
900 + update_option('mxchat_plugin_version', MXCHAT_VERSION);
901 +
902 + //error_log("MxChat: Activation function completed");
903 +}
904 +
905 +/**
906 + * Setup cron jobs on plugin activation
907 + */
908 +function mxchat_setup_cron_jobs() {
909 + // Clear any existing cron jobs first
910 + wp_clear_scheduled_hook('mxchat_reset_rate_limits');
911 +
912 + // Check if WordPress cron is disabled
913 + if (defined('DISABLE_WP_CRON') && DISABLE_WP_CRON) {
914 + // Set flag to use fallback system
915 + update_option('mxchat_use_fallback_rate_limits', true);
916 + update_option('mxchat_next_rate_limit_check', time() + 3600);
917 + return;
918 + }
919 +
920 + // Schedule the rate limit reset cron job
921 + $result = wp_schedule_event(time() + 300, 'hourly', 'mxchat_reset_rate_limits');
922 +
923 + if ($result === false) {
924 + // Fallback if scheduling fails
925 + update_option('mxchat_use_fallback_rate_limits', true);
926 + update_option('mxchat_next_rate_limit_check', time() + 3600);
927 + } else {
928 + // Clear fallback flags if cron scheduling succeeded
929 + delete_option('mxchat_use_fallback_rate_limits');
930 + }
931 +
932 + // Schedule transcript cleanup if configured
933 + $transcript_options = get_option('mxchat_transcripts_options', array());
934 + $cleanup_interval = isset($transcript_options['mxchat_auto_delete_transcripts']) ? $transcript_options['mxchat_auto_delete_transcripts'] : 'never';
935 +
936 + if ($cleanup_interval !== 'never') {
937 + // Check if not already scheduled
938 + if (!wp_next_scheduled('mxchat_cleanup_old_transcripts')) {
939 + // Schedule to run daily at 3 AM
940 + $next_run = strtotime('tomorrow 3:00 AM');
941 + wp_schedule_event($next_run, 'daily', 'mxchat_cleanup_old_transcripts');
942 + }
943 + }
944 +}
945 +
946 +/**
947 + * Clean up on plugin deactivation
948 + */
949 +function mxchat_deactivate() {
950 + // Clear scheduled cron jobs
951 + wp_clear_scheduled_hook('mxchat_reset_rate_limits');
952 + wp_clear_scheduled_hook('mxchat_cleanup_old_transcripts');
953 + wp_clear_scheduled_hook('mxchat_send_delayed_transcript');
954 +
955 + // Clear fallback options
956 + delete_option('mxchat_use_fallback_rate_limits');
957 + delete_option('mxchat_next_rate_limit_check');
958 + delete_option('mxchat_fallback_check_interval');
959 +
960 + // NOTE: We do NOT delete queue tables on deactivation
961 + // This preserves data if user accidentally deactivates the plugin
962 +}
963 +
964 +/**
965 + * Check if fallback rate limit cleanup is needed
966 + */
967 +function mxchat_check_fallback_rate_limits() {
968 + $use_fallback = get_option('mxchat_use_fallback_rate_limits', false);
969 +
970 + if (!$use_fallback) {
971 + return;
972 + }
973 +
974 + $next_check = get_option('mxchat_next_rate_limit_check', 0);
975 +
976 + if (time() >= $next_check) {
977 + // Only run reset if the MxChat_Integrator class exists
978 + if (class_exists('MxChat_Integrator')) {
979 + $integrator = new MxChat_Integrator();
980 + if (method_exists($integrator, 'mxchat_reset_rate_limits')) {
981 + $integrator->mxchat_reset_rate_limits();
982 + update_option('mxchat_next_rate_limit_check', time() + 3600);
983 + }
984 + }
985 + }
986 +}
987 +
988 +/**
989 + * Robust update checking with role restriction migration, model deprecation, and queue tables
990 + * CRITICAL: This runs on EVERY page load to ensure tables exist
991 + */
992 +function mxchat_check_for_update() {
993 + global $wpdb;
994 +
995 + try {
996 + $current_version = get_option('mxchat_plugin_version', '0.0.0');
997 + $plugin_version = MXCHAT_VERSION;
998 +
999 + // Always ensure critical tables exist (even if version matches)
1000 + // This handles manual table deletion or fresh installs
1001 + $chat_table = $wpdb->prefix . 'mxchat_chat_transcripts';
1002 + $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
1003 +
1004 + $chat_exists = $wpdb->get_var("SHOW TABLES LIKE '$chat_table'") === $chat_table;
1005 + $queue_exists = $wpdb->get_var("SHOW TABLES LIKE '$queue_table'") === $queue_table;
1006 +
1007 + if (!$chat_exists || !$queue_exists) {
1008 + //error_log("MxChat: Critical tables missing, running activation");
1009 + mxchat_activate();
1010 + }
1011 +
1012 + // Version-specific migrations
1013 + if ($current_version !== $plugin_version) {
1014 + //error_log("MxChat: Version change detected: $current_version -> $plugin_version");
1015 +
1016 + // Run live agent update BEFORE updating the stored version
1017 + mxchat_handle_live_agent_update();
1018 +
1019 + // Run theme migration notice for 3.0.1 (AI theme CSS structure changes)
1020 + mxchat_handle_theme_migration_notice();
1021 +
1022 + // Run role restriction migration for 2.4.1
1023 + if (version_compare($current_version, '2.4.1', '<')) {
1024 + mxchat_add_role_restriction_column();
1025 + }
1026 +
1027 + // Run enabled_bots column migration for 2.4.4
1028 + if (version_compare($current_version, '2.4.4', '<')) {
1029 + mxchat_add_enabled_bots_column();
1030 + }
1031 +
1032 + // Run model migration for 2.5.1 (Claude deprecation)
1033 + if (version_compare($current_version, '2.5.1', '<')) {
1034 + mxchat_migrate_deprecated_models();
1035 + }
1036 +
1037 + // 2.5.2: Ensure queue tables exist and fix URL column sizes for all users upgrading to 2.5.2
1038 + if (version_compare($current_version, '2.5.2', '<')) {
1039 + mxchat_create_queue_tables();
1040 + mxchat_fix_url_column_size(); // NEW: Fix URL column size for long URLs
1041 + //error_log("MxChat: Queue tables created and URL columns updated for upgrade to 2.5.2");
1042 + }
1043 +
1044 + // 2.6.0: Ensure rag_context column exists for retrieved documents feature
1045 + if (version_compare($current_version, '2.6.0', '<')) {
1046 + $chat_table = $wpdb->prefix . 'mxchat_chat_transcripts';
1047 + mxchat_ensure_all_columns($chat_table);
1048 + //error_log("MxChat: rag_context column migration for 2.6.0");
1049 + }
1050 +
1051 + // 3.0.5: Migrate deprecated Gemini embedding model
1052 + if (version_compare($current_version, '3.0.5', '<')) {
1053 + mxchat_migrate_gemini_embedding_model();
1054 + }
1055 +
1056 + // 3.0.6: Migrate deprecated OpenAI and Claude models
1057 + if (version_compare($current_version, '3.0.6', '<')) {
1058 + mxchat_migrate_deprecated_models();
1059 + }
1060 +
1061 + // 3.1.2: Convert chat transcripts table to utf8mb4 for emoji support
1062 + if (version_compare($current_version, '3.1.2', '<')) {
1063 + mxchat_migrate_transcripts_charset();
1064 + }
1065 +
1066 + // Run full activation to ensure everything is up to date
1067 + mxchat_activate();
1068 +
1069 + // Run migration functions
1070 + mxchat_migrate_live_agent_status();
1071 +
1072 + // Add the cleanup function for version 2.1.8
1073 + if (version_compare($current_version, '2.1.8', '<')) {
1074 + $deleted = mxchat_cleanup_orphaned_chat_history();
1075 + }
1076 +
1077 + // Update version LAST
1078 + update_option('mxchat_plugin_version', $plugin_version);
1079 +
1080 + //error_log("MxChat: Updated from version $current_version to $plugin_version");
1081 + }
1082 +
1083 + } catch (Exception $e) {
1084 + //error_log('MxChat update error: ' . $e->getMessage());
1085 + // Don't update version if there was an error
1086 + }
1087 +}
1088 +
1089 +/**
1090 + * Ensure tables exist on every admin load for fresh installations
1091 + * This is a safety net for cases where activation hook doesn't fire
1092 + */
1093 +function mxchat_ensure_tables_exist() {
1094 + global $wpdb;
1095 +
1096 + // Only run for admin users to avoid performance impact
1097 + if (!current_user_can('administrator')) {
1098 + return;
1099 + }
1100 +
1101 + // Check if we've already verified tables in this session
1102 + static $tables_checked = false;
1103 + if ($tables_checked) {
1104 + return;
1105 + }
1106 + $tables_checked = true;
1107 +
1108 + $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
1109 + $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
1110 +
1111 + $chat_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
1112 + $queue_exists = $wpdb->get_var("SHOW TABLES LIKE '$queue_table'") === $queue_table;
1113 +
1114 + if (!$chat_exists || !$queue_exists) {
1115 + //error_log("MxChat: Tables missing on admin load, running activation");
1116 + mxchat_activate();
1117 + }
1118 +}
1119 +
1120 +/**
1121 + * Clean up orphaned chat history options from the wp_options table
1122 + * @return int Number of options deleted
1123 + */
1124 +function mxchat_cleanup_orphaned_chat_history() {
1125 + global $wpdb;
1126 + $count = 0;
1127 +
1128 + // Get all option keys that match our pattern
1129 + $history_options = $wpdb->get_results(
1130 + "SELECT option_name FROM {$wpdb->options}
1131 + WHERE option_name LIKE 'mxchat_history_%'"
1132 + );
1133 +
1134 + if (!empty($history_options)) {
1135 + foreach ($history_options as $option) {
1136 + // Extract the session ID from the option name
1137 + $session_id = str_replace('mxchat_history_', '', $option->option_name);
1138 +
1139 + // Check if this session still exists in the custom table
1140 + $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
1141 + $exists = $wpdb->get_var(
1142 + $wpdb->prepare(
1143 + "SELECT COUNT(*) FROM {$table_name} WHERE session_id = %s",
1144 + $session_id
1145 + )
1146 + );
1147 +
1148 + // If session doesn't exist in the main table, delete the option
1149 + if ($exists == 0) {
1150 + delete_option($option->option_name);
1151 + // Also delete related metadata
1152 + delete_option("mxchat_email_{$session_id}");
1153 + delete_option("mxchat_name_{$session_id}");
1154 + delete_option("mxchat_agent_name_{$session_id}");
1155 + $count++;
1156 + }
1157 + }
1158 + }
1159 +
1160 + return $count;
1161 +}
1162 +
1163 +function mxchat_migrate_live_agent_status() {
1164 + $options = get_option('mxchat_options', []);
1165 +
1166 + // Check if live_agent_status exists
1167 + if (isset($options['live_agent_status'])) {
1168 + $current_status = $options['live_agent_status'];
1169 + $needs_update = false;
1170 +
1171 + // Convert to new format if needed
1172 + if ($current_status === 'online') {
1173 + $options['live_agent_status'] = 'on';
1174 + $needs_update = true;
1175 + } else if ($current_status === 'offline') {
1176 + $options['live_agent_status'] = 'off';
1177 + $needs_update = true;
1178 + } else if (!in_array($current_status, ['on', 'off'])) {
1179 + // Default to off for any unexpected values
1180 + $options['live_agent_status'] = 'off';
1181 + $needs_update = true;
1182 + }
1183 +
1184 + // Only update if needed
1185 + if ($needs_update) {
1186 + update_option('mxchat_options', $options);
1187 + }
1188 + } else {
1189 + // If status doesn't exist, set default to off
1190 + $options['live_agent_status'] = 'off';
1191 + update_option('mxchat_options', $options);
1192 + }
1193 +}
1194 +
1195 +function mxchat_handle_live_agent_update() {
1196 + // Get the CURRENT stored version (before it gets updated)
1197 + $current_version = get_option('mxchat_plugin_version', '0.0.0');
1198 + $new_version = '2.2.2';
1199 +
1200 + // Only run this once for the update to 2.2.2
1201 + $update_handled = get_option('mxchat_live_agent_update_2_2_2_handled', false);
1202 +
1203 + // Check if we're upgrading TO 2.2.2 and haven't handled this yet
1204 + if (version_compare($current_version, $new_version, '<') && !$update_handled) {
1205 + $options = get_option('mxchat_options', array());
1206 +
1207 + // Check if live agent was previously enabled
1208 + if (isset($options['live_agent_status']) && $options['live_agent_status'] === 'on') {
1209 + // Disable live agent
1210 + $options['live_agent_status'] = 'off';
1211 + update_option('mxchat_options', $options);
1212 +
1213 + // Set flag to show the notification banner
1214 + update_option('mxchat_show_live_agent_disabled_notice', true);
1215 + }
1216 +
1217 + // Mark this update as handled
1218 + update_option('mxchat_live_agent_update_2_2_2_handled', true);
1219 + }
1220 +}
1221 +
1222 +/**
1223 + * Handle theme migration notice for version 3.0.1
1224 + * Shows a dismissible notice to Pro users about migrating AI-generated themes
1225 + */
1226 +function mxchat_handle_theme_migration_notice() {
1227 + // Get the CURRENT stored version (before it gets updated)
1228 + $current_version = get_option('mxchat_plugin_version', '0.0.0');
1229 + $target_version = '3.0.1';
1230 +
1231 + // Only run this once for the update to 3.0.1
1232 + $update_handled = get_option('mxchat_theme_migration_update_3_0_1_handled', false);
1233 +
1234 + // Check if we're upgrading TO 3.0.1 and haven't handled this yet
1235 + if (version_compare($current_version, $target_version, '<') && !$update_handled) {
1236 + // Check if Pro is activated - only show to Pro users
1237 + $license_status = get_option('mxchat_license_status', 'inactive');
1238 + $is_pro = ($license_status === 'active' || $license_status === esc_html__('active', 'mxchat'));
1239 +
1240 + if ($is_pro) {
1241 + // Set flag to show the theme migration notification banner
1242 + update_option('mxchat_show_theme_migration_notice', true);
1243 + }
1244 +
1245 + // Mark this update as handled (whether Pro or not)
1246 + update_option('mxchat_theme_migration_update_3_0_1_handled', true);
1247 + }
1248 +}
1249 +
1250 +// Initialize plugin safely
1251 +function mxchat_init() {
1252 + // Include all class files first
1253 + mxchat_include_classes();
1254 +
1255 + // Run update check (this also ensures tables exist)
1256 + mxchat_check_for_update();
1257 +
1258 + // CRITICAL: Ensure tables exist on admin pages (safety net)
1259 + add_action('admin_init', 'mxchat_ensure_tables_exist', 1);
1260 +
1261 + // Add fallback rate limit check
1262 + add_action('init', 'mxchat_check_fallback_rate_limits', 5);
1263 +
1264 + // Add migration notice hook
1265 + add_action('admin_notices', 'mxchat_show_migration_notice');
1266 +
1267 + // Initialize classes with error handling
1268 + try {
1269 + // Initialize admin classes
1270 + if (is_admin()) {
1271 + if (class_exists('MxChat_Knowledge_Manager')) {
1272 + $mxchat_knowledge_manager = new MxChat_Knowledge_Manager();
1273 +
1274 + if (class_exists('MxChat_Admin')) {
1275 + $mxchat_admin = new MxChat_Admin($mxchat_knowledge_manager);
1276 + }
1277 + }
1278 +
1279 + // Initialize meta box class
1280 + if (class_exists('MxChat_Meta_Box')) {
1281 + new MxChat_Meta_Box();
1282 + }
1283 +
1284 + }
1285 +
1286 + // Initialize content generator globally — it registers wp_head hook
1287 + // for frontend CSS injection, plus wp_ajax_ hooks for admin.
1288 + if (class_exists('MxChat_Content_Generator')) {
1289 + new MxChat_Content_Generator();
1290 + }
1291 +
1292 + // Initialize public classes
1293 + if (class_exists('MxChat_Public')) {
1294 + $mxchat_public = new MxChat_Public();
1295 + }
1296 +
1297 + if (class_exists('MxChat_Integrator')) {
1298 + global $mxchat_integrator;
1299 + $mxchat_integrator = new MxChat_Integrator();
1300 + }
1301 +
1302 + } catch (Exception $e) {
1303 + //error_log('MxChat initialization error: ' . $e->getMessage());
1304 +
1305 + // Show admin notice if there's an error
1306 + if (is_admin()) {
1307 + add_action('admin_notices', function() use ($e) {
1308 + echo '<div class="notice notice-error"><p>';
1309 + echo '<strong>MxChat Error:</strong> Plugin initialization failed. ';
1310 + echo 'Please check error logs or contact support. Error: ' . esc_html($e->getMessage());
1311 + echo '</p></div>';
1312 + });
1313 + }
1314 + }
1315 +}
1316 +
1317 +// Run initialization on plugins_loaded
1318 +add_action('plugins_loaded', 'mxchat_init');
1319 +
1320 +// Run migration check on admin init (for auto-updates without reactivation)
1321 +add_action('admin_init', 'mxchat_check_and_run_migrations');
1322 +
1323 +/**
1324 + * Check and run migrations on admin init
1325 + * This ensures migrations run even when plugin is auto-updated
1326 + */
1327 +function mxchat_check_and_run_migrations() {
1328 + // Only run in admin and not on every request
1329 + static $checked = false;
1330 + if ($checked) {
1331 + return;
1332 + }
1333 + $checked = true;
1334 +
1335 + mxchat_migrate_pinecone_roles_add_bot_id();
1336 + mxchat_migrate_add_content_type_column();
1337 + mxchat_migrate_add_translations_table();
1338 +}
1339 +
1340 +/**
1341 + * Migration: Create transcript translations table (v3.0.4)
1342 + * For users upgrading from versions before 3.0.4
1343 + */
1344 +function mxchat_migrate_add_translations_table() {
1345 + $migration_key = 'mxchat_translations_table_created';
1346 +
1347 + // Check if migration already ran
1348 + if (get_option($migration_key)) {
1349 + return;
1350 + }
1351 +
1352 + // Create the translations table
1353 + mxchat_create_translations_table();
1354 +
1355 + // Mark migration as complete
1356 + update_option($migration_key, '3.0.4');
1357 +}
1358 +
1359 +/**
1360 + * Migration: Update deprecated Gemini embedding model (v3.0.5)
1361 + * Updates gemini-embedding-exp-03-07 to gemini-embedding-001 for users who had it selected
1362 + */
1363 +function mxchat_migrate_gemini_embedding_model() {
1364 + $options = get_option('mxchat_options', array());
1365 +
1366 + if (isset($options['embedding_model']) && $options['embedding_model'] === 'gemini-embedding-exp-03-07') {
1367 + $options['embedding_model'] = 'gemini-embedding-001';
1368 + update_option('mxchat_options', $options);
1369 + }
1370 +}
1371 +
1372 +// Register activation hook
1373 +register_activation_hook(__FILE__, 'mxchat_activate');
1374 +
1375 +// Add cron schedule
1376 +add_filter('cron_schedules', function($schedules) {
1377 + $schedules['one_minute'] = array(
1378 + 'interval' => 60,
1379 + 'display' => 'Every Minute'
1380 + );
1381 + return $schedules;
1382 +});
1383 +
1384 +// Register deactivation hook
1411 1385 register_deactivation_hook(__FILE__, 'mxchat_deactivate');