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MxChat – AI Chatbot & Content Generation for WordPress / 2.4.5
MxChat – AI Chatbot & Content Generation for WordPress v2.4.5
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← All changes | mxchat-basic.php +701 -1467 3.2.3 → 2.4.5 View file →
@@ -1,1468 +1,702 @@
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: 3.2.3
7 - * Author: MxChat
8 - * Author URI: https://mxchat.ai
9 - * License: GPLv2 or later
10 - * License URI: https://www.gnu.org/licenses/gpl-2.0.html
11 - * Text Domain: mxchat
12 - * Domain Path: /languages
13 - */
14 -
15 -if (!defined('ABSPATH')) {
16 - exit; // Exit if accessed directly.
17 -}
18 -
19 -
20 -if (!defined('MXCHAT_DEV_MODE')) {
21 - define('MXCHAT_DEV_MODE', false);
22 -}
23 -
24 -if (!defined('MXCHAT_VERSION')) {
25 - $plugin_data = get_file_data(__FILE__, array('Version' => 'Version'), 'plugin');
26 - $version = $plugin_data['Version'];
27 - if (MXCHAT_DEV_MODE) {
28 - $version .= '.' . time();
29 - }
30 - define('MXCHAT_VERSION', $version);
31 -}
32 -
33 -function mxchat_load_textdomain() {
34 - $domain = 'mxchat';
35 - $locale = determine_locale();
36 -
37 - // First, try to load from /wp-content/languages/plugins/ (preserved during updates)
38 - $mo_file = WP_LANG_DIR . '/plugins/' . $domain . '-' . $locale . '.mo';
39 - if (file_exists($mo_file)) {
40 - load_textdomain($domain, $mo_file);
41 - return;
42 - }
43 -
44 - // Fallback to plugin's /languages directory
45 - load_plugin_textdomain($domain, false, dirname(plugin_basename(__FILE__)) . '/languages');
46 -}
47 -add_action('init', 'mxchat_load_textdomain');
48 -
49 -/**
50 - * Exclude MxChat assets from caching plugin optimizations
51 - *
52 - * This prevents issues with WP Rocket, LiteSpeed Cache, Autoptimize, WP Super Cache,
53 - * W3 Total Cache, SG Optimizer, and similar plugins that may break the chatbot by
54 - * removing "unused" CSS, minifying/combining JS, or deferring/delaying jQuery.
55 - *
56 - * Both chat-script.js and floating-script.js depend on jQuery, so jQuery must also
57 - * be excluded from any optimization that changes load order or timing.
58 - */
59 -
60 -// ── WP Rocket ────────────────────────────────────────────────────────────────
61 -
62 -// Exclude from Remove Unused CSS (RUCSS)
63 -add_filter('rocket_rucss_inline_atts_exclusions', function($exclusions) {
64 - if (!is_array($exclusions)) $exclusions = array();
65 - $exclusions[] = 'mxchat';
66 - return $exclusions;
67 -});
68 -
69 -// Exclude CSS from minification/combination
70 -add_filter('rocket_exclude_css', function($excluded) {
71 - if (!is_array($excluded)) $excluded = array();
72 - $excluded[] = '/plugins/mxchat-basic/css/chat-style.css';
73 - return $excluded;
74 -});
75 -
76 -// Exclude JS from minification/combination
77 -add_filter('rocket_exclude_js', function($excluded) {
78 - if (!is_array($excluded)) $excluded = array();
79 - $excluded[] = '/plugins/mxchat-basic/js/chat-script.js';
80 - $excluded[] = '/plugins/mxchat-basic/js/floating-script.js';
81 - $excluded[] = '/jquery-core';
82 - $excluded[] = '/jquery.min.js';
83 - $excluded[] = '/jquery.js';
84 - $excluded[] = '/jquery-migrate';
85 - return $excluded;
86 -});
87 -
88 -// Exclude JS from defer
89 -add_filter('rocket_exclude_defer_js', function($excluded) {
90 - if (!is_array($excluded)) $excluded = array();
91 - $excluded[] = '/plugins/mxchat-basic/js/chat-script.js';
92 - $excluded[] = '/plugins/mxchat-basic/js/floating-script.js';
93 - $excluded[] = '/jquery-core';
94 - $excluded[] = '/jquery.min.js';
95 - $excluded[] = '/jquery.js';
96 - $excluded[] = '/jquery-migrate';
97 - return $excluded;
98 -});
99 -
100 -// Exclude from delay JS execution
101 -add_filter('rocket_delay_js_exclusions', function($excluded) {
102 - if (!is_array($excluded)) $excluded = array();
103 - $excluded[] = 'mxchat';
104 - $excluded[] = 'chat-script';
105 - $excluded[] = 'floating-script';
106 - $excluded[] = '/jquery-core';
107 - $excluded[] = '/jquery.min.js';
108 - $excluded[] = '/jquery.js';
109 - $excluded[] = '/jquery-migrate';
110 - return $excluded;
111 -});
112 -
113 -// ── LiteSpeed Cache ──────────────────────────────────────────────────────────
114 -
115 -// Exclude CSS from optimization
116 -add_filter('litespeed_optimize_css_excludes', function($excluded) {
117 - if (!is_array($excluded)) $excluded = array();
118 - $excluded[] = 'chat-style.css';
119 - $excluded[] = 'mxchat';
120 - return $excluded;
121 -});
122 -
123 -// Exclude from UCSS (Unique CSS) - prevents LiteSpeed from stripping "unused" MxChat CSS
124 -add_filter('litespeed_ucss_whitelist', function($whitelist) {
125 - if (!is_array($whitelist)) $whitelist = array();
126 - $whitelist[] = '.mxchat-chatbot-wrapper';
127 - $whitelist[] = '.floating-chatbot';
128 - $whitelist[] = '.floating-chatbot-button';
129 - $whitelist[] = '.chatbot-top-bar';
130 - $whitelist[] = '.mxchat-chatbot';
131 - $whitelist[] = '.chat-container';
132 - $whitelist[] = '.chat-box';
133 - $whitelist[] = '.bot-message';
134 - $whitelist[] = '.input-container';
135 - $whitelist[] = '.chat-input';
136 - $whitelist[] = '.send-button';
137 - $whitelist[] = '.pre-chat-message';
138 - $whitelist[] = '.mxchat-popular-questions';
139 - $whitelist[] = '.chat-toolbar';
140 - $whitelist[] = '.exit-chat';
141 - $whitelist[] = '.email-blocker';
142 - return $whitelist;
143 -});
144 -
145 -// Exclude CSS from CCSS (Critical CSS) generation
146 -add_filter('litespeed_optm_ccss_exc', function($excluded) {
147 - if (!is_array($excluded)) $excluded = array();
148 - $excluded[] = 'chat-style.css';
149 - $excluded[] = 'mxchat';
150 - return $excluded;
151 -});
152 -
153 -// Exclude JS from defer
154 -add_filter('litespeed_optm_js_defer_exc', function($excluded) {
155 - if (!is_array($excluded)) $excluded = array();
156 - $excluded[] = 'chat-script.js';
157 - $excluded[] = 'floating-script.js';
158 - $excluded[] = 'mxchat';
159 - $excluded[] = 'jquery.min.js';
160 - $excluded[] = 'jquery.js';
161 - return $excluded;
162 -});
163 -
164 -// Exclude JS from combining
165 -add_filter('litespeed_optm_js_exc', function($excluded) {
166 - if (!is_array($excluded)) $excluded = array();
167 - $excluded[] = 'chat-script.js';
168 - $excluded[] = 'floating-script.js';
169 - $excluded[] = 'mxchat';
170 - $excluded[] = 'jquery.min.js';
171 - $excluded[] = 'jquery.js';
172 - return $excluded;
173 -});
174 -
175 -// Exclude JS from delayed execution
176 -add_filter('litespeed_optm_js_delay_exc', function($excluded) {
177 - if (!is_array($excluded)) $excluded = array();
178 - $excluded[] = 'chat-script.js';
179 - $excluded[] = 'floating-script.js';
180 - $excluded[] = 'mxchat';
181 - return $excluded;
182 -});
183 -
184 -// Exclude from Guest Mode optimization
185 -add_filter('litespeed_guest_optm_exc', function($excluded) {
186 - if (!is_array($excluded)) $excluded = array();
187 - $excluded[] = 'mxchat';
188 - $excluded[] = 'chat-style';
189 - $excluded[] = 'chat-script';
190 - $excluded[] = 'floating-script';
191 - return $excluded;
192 -});
193 -
194 -// ── Autoptimize ──────────────────────────────────────────────────────────────
195 -
196 -// Exclude CSS from optimization (comma-separated strings)
197 -add_filter('autoptimize_filter_css_exclude', function($excluded) {
198 - if (!is_string($excluded)) $excluded = '';
199 - return $excluded . ', mxchat, chat-style.css';
200 -});
201 -
202 -// Exclude JS from optimization (comma-separated strings)
203 -add_filter('autoptimize_filter_js_exclude', function($excluded) {
204 - if (!is_string($excluded)) $excluded = '';
205 - return $excluded . ', mxchat, chat-script.js, floating-script.js, jquery.min.js, jquery.js';
206 -});
207 -
208 -// ── SG Optimizer (SiteGround) ────────────────────────────────────────────────
209 -
210 -add_filter('sgo_js_minify_exclude', function($excluded) {
211 - if (!is_array($excluded)) $excluded = array();
212 - $excluded[] = 'chat-script.js';
213 - $excluded[] = 'floating-script.js';
214 - $excluded[] = 'jquery.min.js';
215 - return $excluded;
216 -});
217 -
218 -add_filter('sgo_javascript_combine_exclude', function($excluded) {
219 - if (!is_array($excluded)) $excluded = array();
220 - $excluded[] = 'chat-script.js';
221 - $excluded[] = 'floating-script.js';
222 - $excluded[] = 'jquery.min.js';
223 - return $excluded;
224 -});
225 -
226 -add_filter('sgo_js_async_exclude', function($excluded) {
227 - if (!is_array($excluded)) $excluded = array();
228 - $excluded[] = 'chat-script.js';
229 - $excluded[] = 'floating-script.js';
230 - $excluded[] = 'jquery.min.js';
231 - return $excluded;
232 -});
233 -
234 -// ── W3 Total Cache ───────────────────────────────────────────────────────────
235 -
236 -add_filter('w3tc_minify_js_do_tag_minification', function($do_minify, $script_tag, $file) {
237 - if (strpos($file, 'chat-script.js') !== false ||
238 - strpos($file, 'floating-script.js') !== false ||
239 - strpos($file, 'jquery.min.js') !== false ||
240 - strpos($file, 'jquery.js') !== false) {
241 - return false;
242 - }
243 - return $do_minify;
244 -}, 10, 3);
245 -
246 -// ── WP Super Cache ──────────────────────────────────────────────────────────
247 -
248 -add_filter('wpsc_rejected_uri', function($rejected) {
249 - if (!is_array($rejected)) $rejected = array();
250 - $rejected[] = 'wp-admin/admin-ajax.php';
251 - return $rejected;
252 -});
253 -
254 -// Include classes with error handling
255 -function mxchat_include_classes() {
256 - $class_files = array(
257 - 'includes/class-mxchat-integrator.php',
258 - 'includes/class-mxchat-admin.php',
259 - 'includes/class-mxchat-public.php',
260 - 'includes/class-mxchat-utils.php',
261 - 'includes/class-mxchat-user.php',
262 - 'includes/class-mxchat-meta-box.php',
263 - 'includes/class-mxchat-chunker.php',
264 - 'includes/class-mxchat-word-handler.php',
265 - 'includes/class-mxchat-content-generator.php',
266 - 'admin/class-ajax-handler.php',
267 - 'admin/class-pinecone-manager.php',
268 - 'admin/class-knowledge-manager.php'
269 - );
270 -
271 - foreach ($class_files as $file) {
272 - $file_path = plugin_dir_path(__FILE__) . $file;
273 - if (file_exists($file_path)) {
274 - require_once $file_path;
275 - } else {
276 - //error_log('MxChat: Missing class file - ' . $file);
277 - }
278 - }
279 -}
280 -
281 -/**
282 - * Lazy-load the PDF parser library only when needed.
283 - * Avoids loading 44 files on every page request.
284 - */
285 -function mxchat_load_pdf_parser() {
286 - if (class_exists('\Smalot\PdfParser\Parser')) {
287 - return true;
288 - }
289 - $autoload_path = plugin_dir_path(__FILE__) . 'includes/pdf-parser/alt_autoload.php';
290 - if (file_exists($autoload_path)) {
291 - require_once $autoload_path;
292 - return true;
293 - }
294 - return false;
295 -}
296 -
297 -/**
298 - * Create URL click tracking table
299 - */
300 -function mxchat_create_url_clicks_table() {
301 - global $wpdb;
302 -
303 - $table_name = $wpdb->prefix . 'mxchat_url_clicks';
304 -
305 - $charset_collate = $wpdb->get_charset_collate();
306 -
307 - $sql = "CREATE TABLE $table_name (
308 - id mediumint(9) NOT NULL AUTO_INCREMENT,
309 - session_id varchar(100) NOT NULL,
310 - clicked_url text NOT NULL,
311 - message_context text,
312 - click_timestamp datetime DEFAULT CURRENT_TIMESTAMP,
313 - user_ip varchar(45),
314 - user_agent text,
315 - PRIMARY KEY (id),
316 - KEY session_id (session_id),
317 - KEY click_timestamp (click_timestamp)
318 - ) $charset_collate;";
319 -
320 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
321 - dbDelta($sql);
322 -}
323 -
324 -/**
325 - * FIXED: Robust table creation and column management
326 - */
327 -function mxchat_create_chat_transcripts_table() {
328 - global $wpdb;
329 -
330 - $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
331 - $charset_collate = $wpdb->get_charset_collate();
332 -
333 - // Create table with ALL columns including user_name from the start
334 - $sql = "CREATE TABLE $table_name (
335 - id MEDIUMINT(9) NOT NULL AUTO_INCREMENT,
336 - user_id MEDIUMINT(9) DEFAULT 0,
337 - session_id VARCHAR(255) NOT NULL,
338 - role VARCHAR(255) NOT NULL,
339 - message TEXT NOT NULL,
340 - user_email VARCHAR(255) DEFAULT NULL,
341 - user_name VARCHAR(100) DEFAULT NULL,
342 - user_identifier VARCHAR(255) DEFAULT NULL,
343 - originating_page_url TEXT DEFAULT NULL,
344 - originating_page_title VARCHAR(500) DEFAULT NULL,
345 - timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
346 - PRIMARY KEY (id),
347 - KEY session_id (session_id),
348 - KEY user_email (user_email),
349 - KEY timestamp (timestamp)
350 - ) $charset_collate;";
351 -
352 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
353 - $result = dbDelta($sql);
354 -
355 - // Log the result for debugging
356 - if (empty($result)) {
357 - //error_log("MxChat: dbDelta returned empty result for chat transcripts table");
358 - } else {
359 - //error_log("MxChat: dbDelta result: " . print_r($result, true));
360 - }
361 -
362 - // IMPORTANT: Ensure all columns exist for existing installations
363 - mxchat_ensure_all_columns($table_name);
364 -}
365 -
366 -/**
367 - * Ensure all required columns exist (for upgrades)
368 - */
369 -function mxchat_ensure_all_columns($table_name) {
370 - global $wpdb;
371 -
372 - // First check if table exists
373 - $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
374 - if (!$table_exists) {
375 - //error_log("MxChat: Table $table_name does not exist, cannot add columns");
376 - return;
377 - }
378 -
379 - // Define all required columns and their types
380 - $required_columns = [
381 - 'user_identifier' => 'VARCHAR(255) DEFAULT NULL',
382 - 'user_email' => 'VARCHAR(255) DEFAULT NULL',
383 - 'user_name' => 'VARCHAR(100) DEFAULT NULL',
384 - 'originating_page_url' => 'TEXT DEFAULT NULL',
385 - 'originating_page_title' => 'VARCHAR(500) DEFAULT NULL',
386 - 'rag_context' => 'LONGTEXT DEFAULT NULL'
387 - ];
388 -
389 - // Get existing columns
390 - $existing_columns = $wpdb->get_results("SHOW COLUMNS FROM $table_name");
391 - if (empty($existing_columns)) {
392 - //error_log("MxChat: Could not get columns for table $table_name");
393 - return;
394 - }
395 -
396 - $existing_column_names = array_column($existing_columns, 'Field');
397 -
398 - // Add missing columns
399 - foreach ($required_columns as $column_name => $column_definition) {
400 - if (!in_array($column_name, $existing_column_names)) {
401 - $alter_sql = "ALTER TABLE $table_name ADD COLUMN $column_name $column_definition";
402 - $result = $wpdb->query($alter_sql);
403 -
404 - if ($result === false) {
405 - //error_log("MxChat: Failed to add column $column_name to $table_name. Error: " . $wpdb->last_error);
406 - } else {
407 - //error_log("MxChat: Successfully added column $column_name to $table_name");
408 - }
409 - }
410 - }
411 -}
412 -
413 -/**
414 - * Add role restriction column to knowledge base table
415 - */
416 -function mxchat_add_role_restriction_column() {
417 - global $wpdb;
418 - $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
419 -
420 - // Check if table exists first
421 - $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
422 - if (!$table_exists) {
423 - //error_log("MxChat: System prompt content table does not exist, cannot add role_restriction column");
424 - return;
425 - }
426 -
427 - // Check if column already exists
428 - $column_exists = $wpdb->get_results(
429 - $wpdb->prepare(
430 - "SHOW COLUMNS FROM {$table_name} LIKE %s",
431 - 'role_restriction'
432 - )
433 - );
434 -
435 - if (empty($column_exists)) {
436 - $alter_sql = "ALTER TABLE {$table_name} ADD COLUMN role_restriction VARCHAR(50) DEFAULT 'public' AFTER source_url";
437 - $result = $wpdb->query($alter_sql);
438 -
439 - if ($result === false) {
440 - //error_log("MxChat: Failed to add role_restriction column. Error: " . $wpdb->last_error);
441 - } else {
442 - //error_log("MxChat: Successfully added role_restriction column");
443 -
444 - // Set all existing records to 'public' (everyone can access)
445 - $update_result = $wpdb->query(
446 - "UPDATE {$table_name}
447 - SET role_restriction = 'public'
448 - WHERE role_restriction IS NULL OR role_restriction = ''"
449 - );
450 -
451 - if ($update_result !== false) {
452 - //error_log("MxChat: Updated {$update_result} existing records to public access");
453 - }
454 - }
455 - }
456 -}
457 -
458 -/**
459 - * Add enabled_bots column to intents table for multi-bot action filtering
460 - */
461 -function mxchat_add_enabled_bots_column() {
462 - global $wpdb;
463 - $table_name = $wpdb->prefix . 'mxchat_intents';
464 -
465 - // Check if table exists first
466 - $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
467 - if (!$table_exists) {
468 - //error_log("MxChat: Intents table does not exist, cannot add enabled_bots column");
469 - return;
470 - }
471 -
472 - // Check if column already exists
473 - $column_exists = $wpdb->get_results(
474 - $wpdb->prepare(
475 - "SHOW COLUMNS FROM {$table_name} LIKE %s",
476 - 'enabled_bots'
477 - )
478 - );
479 -
480 - if (empty($column_exists)) {
481 - $alter_sql = "ALTER TABLE {$table_name} ADD COLUMN enabled_bots LONGTEXT DEFAULT NULL AFTER enabled";
482 - $result = $wpdb->query($alter_sql);
483 -
484 - if ($result === false) {
485 - //error_log("MxChat: Failed to add enabled_bots column. Error: " . $wpdb->last_error);
486 - } else {
487 - //error_log("MxChat: Successfully added enabled_bots column");
488 -
489 - // Set all existing actions to work with 'default' bot for backward compatibility
490 - $default_bots = json_encode(['default']);
491 - $update_result = $wpdb->query(
492 - $wpdb->prepare(
493 - "UPDATE {$table_name}
494 - SET enabled_bots = %s
495 - WHERE enabled_bots IS NULL OR enabled_bots = ''",
496 - $default_bots
497 - )
498 - );
499 -
500 - if ($update_result !== false) {
501 - //error_log("MxChat: Updated {$update_result} existing actions to work with default bot");
502 - }
503 - }
504 - }
505 -}
506 -
507 -/**
508 - * Create Pinecone role restrictions table with multi-bot support
509 - */
510 -function mxchat_create_pinecone_roles_table() {
511 - global $wpdb;
512 -
513 - $table_name = $wpdb->prefix . 'mxchat_pinecone_roles';
514 - $charset_collate = $wpdb->get_charset_collate();
515 -
516 - $sql = "CREATE TABLE $table_name (
517 - id mediumint(9) NOT NULL AUTO_INCREMENT,
518 - vector_id varchar(255) NOT NULL,
519 - bot_id varchar(50) NOT NULL DEFAULT 'default',
520 - source_url text,
521 - role_restriction varchar(50) DEFAULT 'public',
522 - updated_at timestamp DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
523 - PRIMARY KEY (id),
524 - UNIQUE KEY vector_bot (vector_id, bot_id),
525 - KEY role_restriction (role_restriction),
526 - KEY bot_id (bot_id)
527 - ) $charset_collate;";
528 -
529 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
530 - dbDelta($sql);
531 -}
532 -
533 -/**
534 - * Add bot_id column to mxchat_pinecone_roles table for multi-bot support
535 - * This migration runs once to update existing installations
536 - */
537 -function mxchat_migrate_pinecone_roles_add_bot_id() {
538 - global $wpdb;
539 -
540 - // Check if migration already ran
541 - $migration_version = get_option('mxchat_pinecone_roles_migration_version', '0');
542 - if (version_compare($migration_version, '2.5.2', '>=')) {
543 - return; // Already migrated
544 - }
545 -
546 - $table_name = $wpdb->prefix . 'mxchat_pinecone_roles';
547 -
548 - // Check if table exists
549 - if ($wpdb->get_var("SHOW TABLES LIKE '{$table_name}'") != $table_name) {
550 - return; // Table doesn't exist yet
551 - }
552 -
553 - // Check if bot_id column already exists
554 - $column_exists = $wpdb->get_results("SHOW COLUMNS FROM {$table_name} LIKE 'bot_id'");
555 -
556 - if (empty($column_exists)) {
557 - // Add bot_id column
558 - $wpdb->query("ALTER TABLE {$table_name} ADD COLUMN bot_id VARCHAR(50) NOT NULL DEFAULT 'default' AFTER vector_id");
559 -
560 - // Update the unique key to include bot_id
561 - $wpdb->query("ALTER TABLE {$table_name} DROP INDEX vector_id");
562 - $wpdb->query("ALTER TABLE {$table_name} ADD UNIQUE KEY vector_bot (vector_id, bot_id)");
563 -
564 - // Add index for bot_id
565 - $wpdb->query("ALTER TABLE {$table_name} ADD KEY bot_id (bot_id)");
566 -
567 - //error_log('MxChat: Successfully added bot_id column to mxchat_pinecone_roles table');
568 - }
569 -
570 - // Mark migration as complete
571 - update_option('mxchat_pinecone_roles_migration_version', '2.5.2');
572 -}
573 -
574 -/**
575 - * 2.5.6: Add content_type column to mxchat_system_prompt_content table
576 - * Enables filtering knowledge base by content type (posts, pages, PDFs, etc.)
577 - */
578 -function mxchat_migrate_add_content_type_column() {
579 - global $wpdb;
580 -
581 - // Check if migration already ran
582 - $migration_version = get_option('mxchat_content_type_migration_version', '0');
583 - if (version_compare($migration_version, '2.5.6', '>=')) {
584 - return;
585 - }
586 -
587 - $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
588 -
589 - // Check if table exists
590 - if ($wpdb->get_var("SHOW TABLES LIKE '{$table_name}'") != $table_name) {
591 - return;
592 - }
593 -
594 - // Check if content_type column already exists
595 - $column_exists = $wpdb->get_results("SHOW COLUMNS FROM {$table_name} LIKE 'content_type'");
596 -
597 - if (empty($column_exists)) {
598 - // Add content_type column with default value 'content' for backwards compatibility
599 - $wpdb->query("ALTER TABLE {$table_name} ADD COLUMN content_type VARCHAR(50) DEFAULT 'content' AFTER role_restriction");
600 -
601 - // Add index for better query performance
602 - $wpdb->query("ALTER TABLE {$table_name} ADD KEY content_type (content_type)");
603 -
604 - //error_log('MxChat: Successfully added content_type column to mxchat_system_prompt_content table');
605 - }
606 -
607 - // Mark migration as complete
608 - update_option('mxchat_content_type_migration_version', '2.5.6');
609 -}
610 -
611 -/**
612 - * 3.2.3: Add embedding_model column to KB and intent tables so we can detect
613 - * when the active embedding model is changed while content is already embedded.
614 - */
615 -function mxchat_add_embedding_model_columns() {
616 - global $wpdb;
617 -
618 - $migration_version = get_option('mxchat_embedding_model_migration_version', '0');
619 - if (version_compare($migration_version, '3.2.3', '>=')) {
620 - return;
621 - }
622 -
623 - $tables = array(
624 - $wpdb->prefix . 'mxchat_system_prompt_content',
625 - $wpdb->prefix . 'mxchat_intents',
626 - $wpdb->prefix . 'mxchat_intent_phrases',
627 - );
628 -
629 - foreach ($tables as $table) {
630 - if ($wpdb->get_var("SHOW TABLES LIKE '{$table}'") !== $table) {
631 - continue;
632 - }
633 - $col_exists = $wpdb->get_results("SHOW COLUMNS FROM {$table} LIKE 'embedding_model'");
634 - if (empty($col_exists)) {
635 - $wpdb->query("ALTER TABLE {$table} ADD COLUMN embedding_model VARCHAR(64) DEFAULT NULL");
636 - }
637 - }
638 -
639 - // Best-effort backfill: if any existing content lacks a stamped model, assume
640 - // it was embedded with whatever model is currently selected. This is the
641 - // safest assumption for installations upgrading to 3.2.3 — if it was wrong
642 - // already, the mismatch detection will surface it on the next switch.
643 - $options = get_option('mxchat_options', array());
644 - $current_model = $options['embedding_model'] ?? 'text-embedding-ada-002';
645 -
646 - if (get_option('mxchat_active_embedding_model', '') === '') {
647 - $kb_table = $wpdb->prefix . 'mxchat_system_prompt_content';
648 - $kb_count = (int) $wpdb->get_var("SELECT COUNT(*) FROM {$kb_table}");
649 - if ($kb_count > 0) {
650 - update_option('mxchat_active_embedding_model', $current_model, false);
651 - }
652 - }
653 -
654 - update_option('mxchat_embedding_model_migration_version', '3.2.3');
655 -}
656 -
657 -/**
658 - * 2.5.2: Create queue processing tables for reliable background processing
659 - */
660 -function mxchat_create_queue_tables() {
661 - global $wpdb;
662 - $charset_collate = $wpdb->get_charset_collate();
663 -
664 - // Main queue table
665 - $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
666 - $sql_queue = "CREATE TABLE $queue_table (
667 - id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
668 - queue_id varchar(64) NOT NULL,
669 - item_type varchar(20) NOT NULL,
670 - item_data longtext NOT NULL,
671 - status varchar(20) NOT NULL DEFAULT 'pending',
672 - bot_id varchar(50) NOT NULL DEFAULT 'default',
673 - priority int(11) NOT NULL DEFAULT 0,
674 - attempts int(11) NOT NULL DEFAULT 0,
675 - max_attempts int(11) NOT NULL DEFAULT 3,
676 - error_message text DEFAULT NULL,
677 - created_at datetime NOT NULL,
678 - started_at datetime DEFAULT NULL,
679 - completed_at datetime DEFAULT NULL,
680 - PRIMARY KEY (id),
681 - KEY queue_id (queue_id),
682 - KEY status (status),
683 - KEY item_type (item_type),
684 - KEY priority (priority)
685 - ) $charset_collate;";
686 -
687 - // Queue metadata table
688 - $meta_table = $wpdb->prefix . 'mxchat_queue_meta';
689 - $sql_meta = "CREATE TABLE $meta_table (
690 - id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
691 - queue_id varchar(64) NOT NULL,
692 - meta_key varchar(255) NOT NULL,
693 - meta_value longtext,
694 - PRIMARY KEY (id),
695 - KEY queue_id (queue_id),
696 - KEY meta_key (meta_key)
697 - ) $charset_collate;";
698 -
699 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
700 - dbDelta($sql_queue);
701 - dbDelta($sql_meta);
702 -
703 - //error_log("MxChat: Queue tables created/updated successfully");
704 -}
705 -
706 -/**
707 - * Create transcript translations table for persisting translations
708 - */
709 -function mxchat_create_translations_table() {
710 - global $wpdb;
711 - $charset_collate = $wpdb->get_charset_collate();
712 -
713 - $table_name = $wpdb->prefix . 'mxchat_transcript_translations';
714 - $sql = "CREATE TABLE $table_name (
715 - id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
716 - session_id varchar(255) NOT NULL,
717 - language_code varchar(10) NOT NULL,
718 - translations longtext NOT NULL,
719 - created_at datetime NOT NULL,
720 - updated_at datetime NOT NULL,
721 - PRIMARY KEY (id),
722 - UNIQUE KEY session_lang (session_id, language_code),
723 - KEY session_id (session_id)
724 - ) $charset_collate;";
725 -
726 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
727 - dbDelta($sql);
728 -}
729 -
730 -/**
731 - * 2.5.2: Fix URL column size to support long URLs (especially with UTF-8 encoding)
732 - * This fixes "url, source_url. The supplied values may be too long" errors
733 - */
734 -function mxchat_fix_url_column_size() {
735 - global $wpdb;
736 - $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
737 -
738 - // Check if table exists
739 - $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
740 - if (!$table_exists) {
741 - return;
742 - }
743 -
744 - // Change url and source_url from VARCHAR to TEXT to handle long URLs
745 - // This is especially important for URLs with UTF-8 encoded characters (Hebrew, Arabic, etc.)
746 - $wpdb->query("ALTER TABLE {$table_name} MODIFY COLUMN url TEXT");
747 - $wpdb->query("ALTER TABLE {$table_name} MODIFY COLUMN source_url TEXT");
748 -
749 - //error_log("MxChat: Successfully updated url and source_url columns to TEXT type for long URL support");
750 -}
751 -
752 -/**
753 - * Migrate deprecated AI models to their replacements
754 - * Version 2.5.1: Migrate Claude 3.5 Sonnet (deprecated) to Claude 3.7 Sonnet
755 - * Version 3.1.2: Convert chat transcripts table to utf8mb4 for emoji support
756 - * Without utf8mb4, any bot response containing emojis silently fails to insert.
757 - */
758 -function mxchat_migrate_transcripts_charset() {
759 - global $wpdb;
760 - $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
761 - $wpdb->query("ALTER TABLE $table_name CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci");
762 -}
763 -
764 -/**
765 - * Version 3.0.55: Migrate GPT-4 series models (deprecated 2026-02-17) to GPT-5 series
766 - */
767 -function mxchat_migrate_deprecated_models() {
768 - $options = get_option('mxchat_options', array());
769 - $migrated = false;
770 - $migration_message = '';
771 -
772 - if (!isset($options['model'])) {
773 - return;
774 - }
775 -
776 - $current_model = $options['model'];
777 -
778 - // Migrate deprecated Claude models to Claude Opus 4.6 (recommended replacement per Anthropic)
779 - $deprecated_claude_models = array(
780 - 'claude-3-5-sonnet-20240620', // Retired Oct 28, 2025
781 - 'claude-3-5-sonnet-20241022', // Retired Oct 28, 2025
782 - 'claude-3-7-sonnet-20250219', // Retiring Feb 19, 2026
783 - 'claude-3-opus-20240229', // Retired Jan 5, 2026
784 - 'claude-3-sonnet-20240229', // Legacy
785 - 'claude-3-haiku-20240307', // Legacy
786 - );
787 - if (in_array($current_model, $deprecated_claude_models, true)) {
788 - $options['model'] = 'claude-opus-4-6';
789 - $migrated = true;
790 - $migration_message = sprintf(
791 - 'Your chatbot model has been automatically updated from %s to Claude Opus 4.6 due to Anthropic deprecating older Claude models.',
792 - $current_model
793 - );
794 - }
795 -
796 - // Migrate deprecated Claude Haiku 3.5 to Claude Haiku 4.5
797 - if ($current_model === 'claude-3-5-haiku-20241022') {
798 - $options['model'] = 'claude-haiku-4-5-20251001';
799 - $migrated = true;
800 - $migration_message = 'Your chatbot model has been automatically updated from Claude Haiku 3.5 to Claude Haiku 4.5 due to Anthropic deprecating the older model.';
801 - }
802 -
803 - // Migrate deprecated GPT-4 series and GPT-3.5 Turbo to GPT-5.1 Chat Latest
804 - if (in_array($current_model, array('gpt-4o', 'gpt-4.1-2025-04-14', 'gpt-4-turbo', 'gpt-4', 'gpt-3.5-turbo'), true)) {
805 - $options['model'] = 'gpt-5.1-chat-latest';
806 - $migrated = true;
807 - $migration_message = sprintf(
808 - 'Your chatbot model has been automatically updated from %s to GPT-5.1 Chat Latest due to OpenAI deprecating older models.',
809 - $current_model
810 - );
811 - }
812 -
813 - // Migrate deprecated GPT-4o Mini and GPT-4.1 Mini to GPT-5 Mini
814 - if (in_array($current_model, array('gpt-4o-mini', 'gpt-4.1-mini'), true)) {
815 - $options['model'] = 'gpt-5-mini';
816 - $migrated = true;
817 - $migration_message = sprintf(
818 - 'Your chatbot model has been automatically updated from %s to GPT-5 Mini due to OpenAI deprecating GPT-4 series models.',
819 - $current_model
820 - );
821 - }
822 -
823 - if ($migrated) {
824 - update_option('mxchat_options', $options);
825 - update_option('mxchat_model_migrated_notice', true);
826 - update_option('mxchat_model_migration_message', $migration_message);
827 - }
828 -}
829 -
830 -/**
831 - * Show admin notice after model migration
832 - */
833 -function mxchat_show_migration_notice() {
834 - if (get_option('mxchat_model_migrated_notice')) {
835 - $migration_message = get_option('mxchat_model_migration_message', __('Your chatbot model has been automatically updated due to a model deprecation.', 'mxchat'));
836 - ?>
837 - <div class="notice notice-info is-dismissible">
838 - <p>
839 - <strong><?php esc_html_e('MxChat Model Updated', 'mxchat'); ?></strong><br>
840 - <?php echo esc_html($migration_message); ?>
841 - </p>
842 - </div>
843 - <?php
844 - delete_option('mxchat_model_migrated_notice');
845 - delete_option('mxchat_model_migration_message');
846 - }
847 -}
848 -
849 -function mxchat_activate() {
850 - global $wpdb;
851 - $charset_collate = $wpdb->get_charset_collate();
852 -
853 - //error_log("MxChat: Running activation function");
854 -
855 - // Create chat transcripts table with improved function
856 - mxchat_create_chat_transcripts_table();
857 -
858 - // System Prompt Content Table - UPDATED: Use TEXT for url and source_url columns
859 - $system_prompt_table = $wpdb->prefix . 'mxchat_system_prompt_content';
860 - $sql_system_prompt = "CREATE TABLE $system_prompt_table (
861 - id MEDIUMINT(9) NOT NULL AUTO_INCREMENT,
862 - url TEXT NOT NULL,
863 - article_content LONGTEXT NOT NULL,
864 - embedding_vector LONGTEXT,
865 - source_url TEXT DEFAULT NULL,
866 - role_restriction VARCHAR(50) DEFAULT 'public',
867 - content_type VARCHAR(50) DEFAULT 'content',
868 - embedding_model VARCHAR(64) DEFAULT NULL,
869 - timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
870 - PRIMARY KEY (id),
871 - KEY content_type (content_type)
872 - ) $charset_collate;";
873 -
874 - // Intents Table - NOW INCLUDES enabled_bots column from the start
875 - $intents_table = $wpdb->prefix . 'mxchat_intents';
876 - $sql_intents_table = "CREATE TABLE $intents_table (
877 - id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
878 - intent_label VARCHAR(255) NOT NULL,
879 - phrases TEXT NOT NULL,
880 - embedding_vector LONGTEXT NOT NULL,
881 - callback_function VARCHAR(255) NOT NULL,
882 - similarity_threshold FLOAT DEFAULT 0.85,
883 - enabled TINYINT(1) NOT NULL DEFAULT 1,
884 - enabled_bots LONGTEXT DEFAULT NULL,
885 - embedding_model VARCHAR(64) DEFAULT NULL,
886 - PRIMARY KEY (id)
887 - ) $charset_collate;";
888 -
889 - // Individual Intent Phrases Table - each phrase gets its own embedding vector
890 - $intent_phrases_table = $wpdb->prefix . 'mxchat_intent_phrases';
891 - $sql_intent_phrases_table = "CREATE TABLE $intent_phrases_table (
892 - id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
893 - intent_id BIGINT(20) UNSIGNED NOT NULL,
894 - phrase TEXT NOT NULL,
895 - embedding_vector LONGTEXT NOT NULL,
896 - embedding_model VARCHAR(64) DEFAULT NULL,
897 - created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
898 - PRIMARY KEY (id),
899 - KEY intent_id (intent_id)
900 - ) $charset_collate;";
901 -
902 - require_once ABSPATH . 'wp-admin/includes/upgrade.php';
903 -
904 - // Create other tables
905 - dbDelta($sql_system_prompt);
906 - dbDelta($sql_intents_table);
907 - dbDelta($sql_intent_phrases_table);
908 -
909 - // Create URL click tracking table
910 - mxchat_create_url_clicks_table();
911 -
912 - // Create Pinecone roles table
913 - mxchat_create_pinecone_roles_table();
914 -
915 - // NEW 2.5.2: Create queue processing tables
916 - mxchat_create_queue_tables();
917 -
918 - // Create transcript translations table
919 - mxchat_create_translations_table();
920 -
921 - // Ensure additional columns in system prompt table
922 - $existing_system_columns = $wpdb->get_results("SHOW COLUMNS FROM $system_prompt_table");
923 - if (!empty($existing_system_columns)) {
924 - $existing_system_column_names = array_column($existing_system_columns, 'Field');
925 -
926 - if (!in_array('embedding_vector', $existing_system_column_names)) {
927 - $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN embedding_vector LONGTEXT");
928 - }
929 - if (!in_array('source_url', $existing_system_column_names)) {
930 - $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN source_url TEXT DEFAULT NULL");
931 - }
932 - if (!in_array('role_restriction', $existing_system_column_names)) {
933 - $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN role_restriction VARCHAR(50) DEFAULT 'public' AFTER source_url");
934 - }
935 - }
936 -
937 - // Set default thresholds for existing intents
938 - $wpdb->query("UPDATE {$intents_table} SET similarity_threshold = 0.85 WHERE similarity_threshold IS NULL");
939 -
940 - // Ensure enabled column exists in intents table
941 - $existing_intent_columns = $wpdb->get_results("SHOW COLUMNS FROM $intents_table");
942 - if (!empty($existing_intent_columns)) {
943 - $existing_intent_column_names = array_column($existing_intent_columns, 'Field');
944 -
945 - if (!in_array('enabled', $existing_intent_column_names)) {
946 - $wpdb->query("ALTER TABLE $intents_table ADD COLUMN enabled TINYINT(1) NOT NULL DEFAULT 1");
947 - }
948 -
949 - // Ensure enabled_bots column exists for existing installations
950 - if (!in_array('enabled_bots', $existing_intent_column_names)) {
951 - $wpdb->query("ALTER TABLE $intents_table ADD COLUMN enabled_bots LONGTEXT DEFAULT NULL AFTER enabled");
952 -
953 - // Set existing actions to work with default bot
954 - $default_bots = json_encode(['default']);
955 - $wpdb->query($wpdb->prepare(
956 - "UPDATE {$intents_table} SET enabled_bots = %s WHERE enabled_bots IS NULL",
957 - $default_bots
958 - ));
959 - }
960 - }
961 -
962 - // Run migration for existing installations
963 - mxchat_migrate_pinecone_roles_add_bot_id();
964 -
965 - // 3.2.3: Add embedding_model column to KB and intent tables
966 - mxchat_add_embedding_model_columns();
967 -
968 - // Setup cron jobs
969 - mxchat_setup_cron_jobs();
970 -
971 - // Update version
972 - update_option('mxchat_plugin_version', MXCHAT_VERSION);
973 -
974 - //error_log("MxChat: Activation function completed");
975 -}
976 -
977 -/**
978 - * Setup cron jobs on plugin activation
979 - */
980 -function mxchat_setup_cron_jobs() {
981 - // Clear any existing cron jobs first
982 - wp_clear_scheduled_hook('mxchat_reset_rate_limits');
983 -
984 - // Check if WordPress cron is disabled
985 - if (defined('DISABLE_WP_CRON') && DISABLE_WP_CRON) {
986 - // Set flag to use fallback system
987 - update_option('mxchat_use_fallback_rate_limits', true);
988 - update_option('mxchat_next_rate_limit_check', time() + 3600);
989 - return;
990 - }
991 -
992 - // Schedule the rate limit reset cron job
993 - $result = wp_schedule_event(time() + 300, 'hourly', 'mxchat_reset_rate_limits');
994 -
995 - if ($result === false) {
996 - // Fallback if scheduling fails
997 - update_option('mxchat_use_fallback_rate_limits', true);
998 - update_option('mxchat_next_rate_limit_check', time() + 3600);
999 - } else {
1000 - // Clear fallback flags if cron scheduling succeeded
1001 - delete_option('mxchat_use_fallback_rate_limits');
1002 - }
1003 -
1004 - // Schedule transcript cleanup if configured
1005 - $transcript_options = get_option('mxchat_transcripts_options', array());
1006 - $cleanup_interval = isset($transcript_options['mxchat_auto_delete_transcripts']) ? $transcript_options['mxchat_auto_delete_transcripts'] : 'never';
1007 -
1008 - if ($cleanup_interval !== 'never') {
1009 - // Check if not already scheduled
1010 - if (!wp_next_scheduled('mxchat_cleanup_old_transcripts')) {
1011 - // Schedule to run daily at 3 AM
1012 - $next_run = strtotime('tomorrow 3:00 AM');
1013 - wp_schedule_event($next_run, 'daily', 'mxchat_cleanup_old_transcripts');
1014 - }
1015 - }
1016 -}
1017 -
1018 -/**
1019 - * Clean up on plugin deactivation
1020 - */
1021 -function mxchat_deactivate() {
1022 - // Clear scheduled cron jobs
1023 - wp_clear_scheduled_hook('mxchat_reset_rate_limits');
1024 - wp_clear_scheduled_hook('mxchat_cleanup_old_transcripts');
1025 - wp_clear_scheduled_hook('mxchat_send_delayed_transcript');
1026 -
1027 - // Clear fallback options
1028 - delete_option('mxchat_use_fallback_rate_limits');
1029 - delete_option('mxchat_next_rate_limit_check');
1030 - delete_option('mxchat_fallback_check_interval');
1031 -
1032 - // NOTE: We do NOT delete queue tables on deactivation
1033 - // This preserves data if user accidentally deactivates the plugin
1034 -}
1035 -
1036 -/**
1037 - * Check if fallback rate limit cleanup is needed
1038 - */
1039 -function mxchat_check_fallback_rate_limits() {
1040 - $use_fallback = get_option('mxchat_use_fallback_rate_limits', false);
1041 -
1042 - if (!$use_fallback) {
1043 - return;
1044 - }
1045 -
1046 - $next_check = get_option('mxchat_next_rate_limit_check', 0);
1047 -
1048 - if (time() >= $next_check) {
1049 - // Only run reset if the MxChat_Integrator class exists
1050 - if (class_exists('MxChat_Integrator')) {
1051 - $integrator = new MxChat_Integrator();
1052 - if (method_exists($integrator, 'mxchat_reset_rate_limits')) {
1053 - $integrator->mxchat_reset_rate_limits();
1054 - update_option('mxchat_next_rate_limit_check', time() + 3600);
1055 - }
1056 - }
1057 - }
1058 -}
1059 -
1060 -/**
1061 - * Robust update checking with role restriction migration, model deprecation, and queue tables
1062 - * CRITICAL: This runs on EVERY page load to ensure tables exist
1063 - */
1064 -function mxchat_check_for_update() {
1065 - global $wpdb;
1066 -
1067 - try {
1068 - $current_version = get_option('mxchat_plugin_version', '0.0.0');
1069 - $plugin_version = MXCHAT_VERSION;
1070 -
1071 - // Always ensure critical tables exist (even if version matches)
1072 - // This handles manual table deletion or fresh installs
1073 - $chat_table = $wpdb->prefix . 'mxchat_chat_transcripts';
1074 - $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
1075 -
1076 - $chat_exists = $wpdb->get_var("SHOW TABLES LIKE '$chat_table'") === $chat_table;
1077 - $queue_exists = $wpdb->get_var("SHOW TABLES LIKE '$queue_table'") === $queue_table;
1078 -
1079 - if (!$chat_exists || !$queue_exists) {
1080 - //error_log("MxChat: Critical tables missing, running activation");
1081 - mxchat_activate();
1082 - }
1083 -
1084 - // Version-specific migrations
1085 - if ($current_version !== $plugin_version) {
1086 - //error_log("MxChat: Version change detected: $current_version -> $plugin_version");
1087 -
1088 - // Run live agent update BEFORE updating the stored version
1089 - mxchat_handle_live_agent_update();
1090 -
1091 - // Run theme migration notice for 3.0.1 (AI theme CSS structure changes)
1092 - mxchat_handle_theme_migration_notice();
1093 -
1094 - // Run role restriction migration for 2.4.1
1095 - if (version_compare($current_version, '2.4.1', '<')) {
1096 - mxchat_add_role_restriction_column();
1097 - }
1098 -
1099 - // Run enabled_bots column migration for 2.4.4
1100 - if (version_compare($current_version, '2.4.4', '<')) {
1101 - mxchat_add_enabled_bots_column();
1102 - }
1103 -
1104 - // Run model migration for 2.5.1 (Claude deprecation)
1105 - if (version_compare($current_version, '2.5.1', '<')) {
1106 - mxchat_migrate_deprecated_models();
1107 - }
1108 -
1109 - // 2.5.2: Ensure queue tables exist and fix URL column sizes for all users upgrading to 2.5.2
1110 - if (version_compare($current_version, '2.5.2', '<')) {
1111 - mxchat_create_queue_tables();
1112 - mxchat_fix_url_column_size(); // NEW: Fix URL column size for long URLs
1113 - //error_log("MxChat: Queue tables created and URL columns updated for upgrade to 2.5.2");
1114 - }
1115 -
1116 - // 2.6.0: Ensure rag_context column exists for retrieved documents feature
1117 - if (version_compare($current_version, '2.6.0', '<')) {
1118 - $chat_table = $wpdb->prefix . 'mxchat_chat_transcripts';
1119 - mxchat_ensure_all_columns($chat_table);
1120 - //error_log("MxChat: rag_context column migration for 2.6.0");
1121 - }
1122 -
1123 - // 3.0.5: Migrate deprecated Gemini embedding model
1124 - if (version_compare($current_version, '3.0.5', '<')) {
1125 - mxchat_migrate_gemini_embedding_model();
1126 - }
1127 -
1128 - // 3.0.6: Migrate deprecated OpenAI and Claude models
1129 - if (version_compare($current_version, '3.0.6', '<')) {
1130 - mxchat_migrate_deprecated_models();
1131 - }
1132 -
1133 - // 3.1.2: Convert chat transcripts table to utf8mb4 for emoji support
1134 - if (version_compare($current_version, '3.1.2', '<')) {
1135 - mxchat_migrate_transcripts_charset();
1136 - }
1137 -
1138 - // 3.1.7: Clean up stale shared session email/name entries
1139 - if (version_compare($current_version, '3.1.7', '<')) {
1140 - delete_option('mxchat_email_null');
1141 - delete_option('mxchat_name_null');
1142 - }
1143 -
1144 - // 3.2.3: Add embedding_model tracking columns and backfill active model
1145 - if (version_compare($current_version, '3.2.3', '<')) {
1146 - mxchat_add_embedding_model_columns();
1147 - }
1148 -
1149 - // Run full activation to ensure everything is up to date
1150 - mxchat_activate();
1151 -
1152 - // Run migration functions
1153 - mxchat_migrate_live_agent_status();
1154 -
1155 - // Add the cleanup function for version 2.1.8
1156 - if (version_compare($current_version, '2.1.8', '<')) {
1157 - $deleted = mxchat_cleanup_orphaned_chat_history();
1158 - }
1159 -
1160 - // Update version LAST
1161 - update_option('mxchat_plugin_version', $plugin_version);
1162 -
1163 - //error_log("MxChat: Updated from version $current_version to $plugin_version");
1164 - }
1165 -
1166 - } catch (Exception $e) {
1167 - //error_log('MxChat update error: ' . $e->getMessage());
1168 - // Don't update version if there was an error
1169 - }
1170 -}
1171 -
1172 -/**
1173 - * Ensure tables exist on every admin load for fresh installations
1174 - * This is a safety net for cases where activation hook doesn't fire
1175 - */
1176 -function mxchat_ensure_tables_exist() {
1177 - global $wpdb;
1178 -
1179 - // Only run for admin users to avoid performance impact
1180 - if (!current_user_can('administrator')) {
1181 - return;
1182 - }
1183 -
1184 - // Check if we've already verified tables in this session
1185 - static $tables_checked = false;
1186 - if ($tables_checked) {
1187 - return;
1188 - }
1189 - $tables_checked = true;
1190 -
1191 - $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
1192 - $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
1193 -
1194 - $chat_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
1195 - $queue_exists = $wpdb->get_var("SHOW TABLES LIKE '$queue_table'") === $queue_table;
1196 -
1197 - if (!$chat_exists || !$queue_exists) {
1198 - //error_log("MxChat: Tables missing on admin load, running activation");
1199 - mxchat_activate();
1200 - }
1201 -}
1202 -
1203 -/**
1204 - * Clean up orphaned chat history options from the wp_options table
1205 - * @return int Number of options deleted
1206 - */
1207 -function mxchat_cleanup_orphaned_chat_history() {
1208 - global $wpdb;
1209 - $count = 0;
1210 -
1211 - // Get all option keys that match our pattern
1212 - $history_options = $wpdb->get_results(
1213 - "SELECT option_name FROM {$wpdb->options}
1214 - WHERE option_name LIKE 'mxchat_history_%'"
1215 - );
1216 -
1217 - if (!empty($history_options)) {
1218 - foreach ($history_options as $option) {
1219 - // Extract the session ID from the option name
1220 - $session_id = str_replace('mxchat_history_', '', $option->option_name);
1221 -
1222 - // Check if this session still exists in the custom table
1223 - $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
1224 - $exists = $wpdb->get_var(
1225 - $wpdb->prepare(
1226 - "SELECT COUNT(*) FROM {$table_name} WHERE session_id = %s",
1227 - $session_id
1228 - )
1229 - );
1230 -
1231 - // If session doesn't exist in the main table, delete the option
1232 - if ($exists == 0) {
1233 - delete_option($option->option_name);
1234 - // Also delete related metadata
1235 - delete_option("mxchat_email_{$session_id}");
1236 - delete_option("mxchat_name_{$session_id}");
1237 - delete_option("mxchat_agent_name_{$session_id}");
1238 - $count++;
1239 - }
1240 - }
1241 - }
1242 -
1243 - return $count;
1244 -}
1245 -
1246 -function mxchat_migrate_live_agent_status() {
1247 - $options = get_option('mxchat_options', []);
1248 -
1249 - // Check if live_agent_status exists
1250 - if (isset($options['live_agent_status'])) {
1251 - $current_status = $options['live_agent_status'];
1252 - $needs_update = false;
1253 -
1254 - // Convert to new format if needed
1255 - if ($current_status === 'online') {
1256 - $options['live_agent_status'] = 'on';
1257 - $needs_update = true;
1258 - } else if ($current_status === 'offline') {
1259 - $options['live_agent_status'] = 'off';
1260 - $needs_update = true;
1261 - } else if (!in_array($current_status, ['on', 'off'])) {
1262 - // Default to off for any unexpected values
1263 - $options['live_agent_status'] = 'off';
1264 - $needs_update = true;
1265 - }
1266 -
1267 - // Only update if needed
1268 - if ($needs_update) {
1269 - update_option('mxchat_options', $options);
1270 - }
1271 - } else {
1272 - // If status doesn't exist, set default to off
1273 - $options['live_agent_status'] = 'off';
1274 - update_option('mxchat_options', $options);
1275 - }
1276 -}
1277 -
1278 -function mxchat_handle_live_agent_update() {
1279 - // Get the CURRENT stored version (before it gets updated)
1280 - $current_version = get_option('mxchat_plugin_version', '0.0.0');
1281 - $new_version = '2.2.2';
1282 -
1283 - // Only run this once for the update to 2.2.2
1284 - $update_handled = get_option('mxchat_live_agent_update_2_2_2_handled', false);
1285 -
1286 - // Check if we're upgrading TO 2.2.2 and haven't handled this yet
1287 - if (version_compare($current_version, $new_version, '<') && !$update_handled) {
1288 - $options = get_option('mxchat_options', array());
1289 -
1290 - // Check if live agent was previously enabled
1291 - if (isset($options['live_agent_status']) && $options['live_agent_status'] === 'on') {
1292 - // Disable live agent
1293 - $options['live_agent_status'] = 'off';
1294 - update_option('mxchat_options', $options);
1295 -
1296 - // Set flag to show the notification banner
1297 - update_option('mxchat_show_live_agent_disabled_notice', true);
1298 - }
1299 -
1300 - // Mark this update as handled
1301 - update_option('mxchat_live_agent_update_2_2_2_handled', true);
1302 - }
1303 -}
1304 -
1305 -/**
1306 - * Handle theme migration notice for version 3.0.1
1307 - * Shows a dismissible notice to Pro users about migrating AI-generated themes
1308 - */
1309 -function mxchat_handle_theme_migration_notice() {
1310 - // Get the CURRENT stored version (before it gets updated)
1311 - $current_version = get_option('mxchat_plugin_version', '0.0.0');
1312 - $target_version = '3.0.1';
1313 -
1314 - // Only run this once for the update to 3.0.1
1315 - $update_handled = get_option('mxchat_theme_migration_update_3_0_1_handled', false);
1316 -
1317 - // Check if we're upgrading TO 3.0.1 and haven't handled this yet
1318 - if (version_compare($current_version, $target_version, '<') && !$update_handled) {
1319 - // Check if Pro is activated - only show to Pro users
1320 - $license_status = get_option('mxchat_license_status', 'inactive');
1321 - $is_pro = ($license_status === 'active');
1322 -
1323 - if ($is_pro) {
1324 - // Set flag to show the theme migration notification banner
1325 - update_option('mxchat_show_theme_migration_notice', true);
1326 - }
1327 -
1328 - // Mark this update as handled (whether Pro or not)
1329 - update_option('mxchat_theme_migration_update_3_0_1_handled', true);
1330 - }
1331 -}
1332 -
1333 -// Initialize plugin safely
1334 -function mxchat_init() {
1335 - // Include all class files first
1336 - mxchat_include_classes();
1337 -
1338 - // Run update check (this also ensures tables exist)
1339 - mxchat_check_for_update();
1340 -
1341 - // CRITICAL: Ensure tables exist on admin pages (safety net)
1342 - add_action('admin_init', 'mxchat_ensure_tables_exist', 1);
1343 -
1344 - // Add fallback rate limit check
1345 - add_action('init', 'mxchat_check_fallback_rate_limits', 5);
1346 -
1347 - // Add migration notice hook
1348 - add_action('admin_notices', 'mxchat_show_migration_notice');
1349 -
1350 - // Initialize classes with error handling
1351 - try {
1352 - // Initialize admin classes
1353 - if (is_admin()) {
1354 - if (class_exists('MxChat_Knowledge_Manager')) {
1355 - $mxchat_knowledge_manager = new MxChat_Knowledge_Manager();
1356 -
1357 - if (class_exists('MxChat_Admin')) {
1358 - $mxchat_admin = new MxChat_Admin($mxchat_knowledge_manager);
1359 - }
1360 - }
1361 -
1362 - // Initialize meta box class
1363 - if (class_exists('MxChat_Meta_Box')) {
1364 - new MxChat_Meta_Box();
1365 - }
1366 -
1367 - }
1368 -
1369 - // Initialize content generator globally — it registers wp_head hook
1370 - // for frontend CSS injection, plus wp_ajax_ hooks for admin.
1371 - if (class_exists('MxChat_Content_Generator')) {
1372 - new MxChat_Content_Generator();
1373 - }
1374 -
1375 - // Initialize public classes
1376 - if (class_exists('MxChat_Public')) {
1377 - $mxchat_public = new MxChat_Public();
1378 - }
1379 -
1380 - if (class_exists('MxChat_Integrator')) {
1381 - global $mxchat_integrator;
1382 - $mxchat_integrator = new MxChat_Integrator();
1383 - }
1384 -
1385 - } catch (Exception $e) {
1386 - //error_log('MxChat initialization error: ' . $e->getMessage());
1387 -
1388 - // Show admin notice if there's an error
1389 - if (is_admin()) {
1390 - add_action('admin_notices', function() use ($e) {
1391 - echo '<div class="notice notice-error"><p>';
1392 - echo '<strong>MxChat Error:</strong> Plugin initialization failed. ';
1393 - echo 'Please check error logs or contact support. Error: ' . esc_html($e->getMessage());
1394 - echo '</p></div>';
1395 - });
1396 - }
1397 - }
1398 -}
1399 -
1400 -// Run initialization on plugins_loaded
1401 -add_action('plugins_loaded', 'mxchat_init');
1402 -
1403 -// Run migration check on admin init (for auto-updates without reactivation)
1404 -add_action('admin_init', 'mxchat_check_and_run_migrations');
1405 -
1406 -/**
1407 - * Check and run migrations on admin init
1408 - * This ensures migrations run even when plugin is auto-updated
1409 - */
1410 -function mxchat_check_and_run_migrations() {
1411 - // Only run in admin and not on every request
1412 - static $checked = false;
1413 - if ($checked) {
1414 - return;
1415 - }
1416 - $checked = true;
1417 -
1418 - mxchat_migrate_pinecone_roles_add_bot_id();
1419 - mxchat_migrate_add_content_type_column();
1420 - mxchat_migrate_add_translations_table();
1421 -}
1422 -
1423 -/**
1424 - * Migration: Create transcript translations table (v3.0.4)
1425 - * For users upgrading from versions before 3.0.4
1426 - */
1427 -function mxchat_migrate_add_translations_table() {
1428 - $migration_key = 'mxchat_translations_table_created';
1429 -
1430 - // Check if migration already ran
1431 - if (get_option($migration_key)) {
1432 - return;
1433 - }
1434 -
1435 - // Create the translations table
1436 - mxchat_create_translations_table();
1437 -
1438 - // Mark migration as complete
1439 - update_option($migration_key, '3.0.4');
1440 -}
1441 -
1442 -/**
1443 - * Migration: Update deprecated Gemini embedding model (v3.0.5)
1444 - * Updates gemini-embedding-exp-03-07 to gemini-embedding-001 for users who had it selected
1445 - */
1446 -function mxchat_migrate_gemini_embedding_model() {
1447 - $options = get_option('mxchat_options', array());
1448 -
1449 - if (isset($options['embedding_model']) && $options['embedding_model'] === 'gemini-embedding-exp-03-07') {
1450 - $options['embedding_model'] = 'gemini-embedding-001';
1451 - update_option('mxchat_options', $options);
1452 - }
1453 -}
1454 -
1455 -// Register activation hook
1456 -register_activation_hook(__FILE__, 'mxchat_activate');
1457 -
1458 -// Add cron schedule
1459 -add_filter('cron_schedules', function($schedules) {
1460 - $schedules['one_minute'] = array(
1461 - 'interval' => 60,
1462 - 'display' => 'Every Minute'
1463 - );
1464 - return $schedules;
1465 -});
1466 -
1467 -// Register deactivation hook
1 +<?php
2 +/**
3 + * Plugin Name: MxChat
4 + * Description: AI chatbot for WordPress with OpenAI, Claude, xAI, DeepSeek, live agent, PDF uploads, WooCommerce, and training on website data.
5 + * Version: 2.4.5
6 + * Author: MxChat
7 + * Author URI: https://mxchat.ai
8 + * License: GPLv2 or later
9 + * License URI: https://www.gnu.org/licenses/gpl-2.0.html
10 + * Text Domain: mxchat
11 + * Domain Path: /languages
12 + */
13 +
14 +if (!defined('ABSPATH')) {
15 + exit; // Exit if accessed directly.
16 +}
17 +
18 +// Define plugin version constant for asset versioning
19 +define('MXCHAT_VERSION', '2.4.5');
20 +
21 +function mxchat_load_textdomain() {
22 + load_plugin_textdomain('mxchat', false, dirname(plugin_basename(__FILE__)) . '/languages');
23 +}
24 +add_action('plugins_loaded', 'mxchat_load_textdomain');
25 +
26 +// Include classes with error handling
27 +function mxchat_include_classes() {
28 + $class_files = array(
29 + 'includes/class-mxchat-integrator.php',
30 + 'includes/class-mxchat-admin.php',
31 + 'includes/class-mxchat-public.php',
32 + 'includes/class-mxchat-utils.php',
33 + 'includes/class-mxchat-user.php',
34 + 'includes/class-mxchat-meta-box.php',
35 + 'includes/pdf-parser/alt_autoload.php',
36 + 'includes/class-mxchat-word-handler.php',
37 + 'admin/class-ajax-handler.php',
38 + 'admin/class-pinecone-manager.php',
39 + 'admin/class-knowledge-manager.php'
40 + );
41 +
42 + foreach ($class_files as $file) {
43 + $file_path = plugin_dir_path(__FILE__) . $file;
44 + if (file_exists($file_path)) {
45 + require_once $file_path;
46 + } else {
47 + //error_log('MxChat: Missing class file - ' . $file);
48 + }
49 + }
50 +}
51 +
52 +/**
53 + * Create URL click tracking table
54 + */
55 +function mxchat_create_url_clicks_table() {
56 + global $wpdb;
57 +
58 + $table_name = $wpdb->prefix . 'mxchat_url_clicks';
59 +
60 + $charset_collate = $wpdb->get_charset_collate();
61 +
62 + $sql = "CREATE TABLE $table_name (
63 + id mediumint(9) NOT NULL AUTO_INCREMENT,
64 + session_id varchar(100) NOT NULL,
65 + clicked_url text NOT NULL,
66 + message_context text,
67 + click_timestamp datetime DEFAULT CURRENT_TIMESTAMP,
68 + user_ip varchar(45),
69 + user_agent text,
70 + PRIMARY KEY (id),
71 + KEY session_id (session_id),
72 + KEY click_timestamp (click_timestamp)
73 + ) $charset_collate;";
74 +
75 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
76 + dbDelta($sql);
77 +}
78 +
79 +/**
80 + * FIXED: Robust table creation and column management
81 + */
82 +function mxchat_create_chat_transcripts_table() {
83 + global $wpdb;
84 +
85 + $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
86 + $charset_collate = $wpdb->get_charset_collate();
87 +
88 + // Create table with ALL columns including user_name from the start
89 + $sql = "CREATE TABLE $table_name (
90 + id MEDIUMINT(9) NOT NULL AUTO_INCREMENT,
91 + user_id MEDIUMINT(9) DEFAULT 0,
92 + session_id VARCHAR(255) NOT NULL,
93 + role VARCHAR(255) NOT NULL,
94 + message TEXT NOT NULL,
95 + user_email VARCHAR(255) DEFAULT NULL,
96 + user_name VARCHAR(100) DEFAULT NULL,
97 + user_identifier VARCHAR(255) DEFAULT NULL,
98 + originating_page_url TEXT DEFAULT NULL,
99 + originating_page_title VARCHAR(500) DEFAULT NULL,
100 + timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
101 + PRIMARY KEY (id),
102 + KEY session_id (session_id),
103 + KEY user_email (user_email),
104 + KEY timestamp (timestamp)
105 + ) $charset_collate;";
106 +
107 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
108 + $result = dbDelta($sql);
109 +
110 + // Log the result for debugging
111 + if (empty($result)) {
112 + //error_log("MxChat: dbDelta returned empty result for chat transcripts table");
113 + } else {
114 + //error_log("MxChat: dbDelta result: " . print_r($result, true));
115 + }
116 +
117 + // IMPORTANT: Ensure all columns exist for existing installations
118 + mxchat_ensure_all_columns($table_name);
119 +}
120 +
121 +/**
122 + * Ensure all required columns exist (for upgrades)
123 + */
124 +function mxchat_ensure_all_columns($table_name) {
125 + global $wpdb;
126 +
127 + // First check if table exists
128 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
129 + if (!$table_exists) {
130 + //error_log("MxChat: Table $table_name does not exist, cannot add columns");
131 + return;
132 + }
133 +
134 + // Define all required columns and their types
135 + $required_columns = [
136 + 'user_identifier' => 'VARCHAR(255) DEFAULT NULL',
137 + 'user_email' => 'VARCHAR(255) DEFAULT NULL',
138 + 'user_name' => 'VARCHAR(100) DEFAULT NULL',
139 + 'originating_page_url' => 'TEXT DEFAULT NULL',
140 + 'originating_page_title' => 'VARCHAR(500) DEFAULT NULL'
141 + ];
142 +
143 + // Get existing columns
144 + $existing_columns = $wpdb->get_results("SHOW COLUMNS FROM $table_name");
145 + if (empty($existing_columns)) {
146 + //error_log("MxChat: Could not get columns for table $table_name");
147 + return;
148 + }
149 +
150 + $existing_column_names = array_column($existing_columns, 'Field');
151 +
152 + // Add missing columns
153 + foreach ($required_columns as $column_name => $column_definition) {
154 + if (!in_array($column_name, $existing_column_names)) {
155 + $alter_sql = "ALTER TABLE $table_name ADD COLUMN $column_name $column_definition";
156 + $result = $wpdb->query($alter_sql);
157 +
158 + if ($result === false) {
159 + //error_log("MxChat: Failed to add column $column_name to $table_name. Error: " . $wpdb->last_error);
160 + } else {
161 + //error_log("MxChat: Successfully added column $column_name to $table_name");
162 + }
163 + }
164 + }
165 +}
166 +
167 +/**
168 + * Add role restriction column to knowledge base table
169 + */
170 +function mxchat_add_role_restriction_column() {
171 + global $wpdb;
172 + $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
173 +
174 + // Check if table exists first
175 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
176 + if (!$table_exists) {
177 + //error_log("MxChat: System prompt content table does not exist, cannot add role_restriction column");
178 + return;
179 + }
180 +
181 + // Check if column already exists
182 + $column_exists = $wpdb->get_results(
183 + $wpdb->prepare(
184 + "SHOW COLUMNS FROM {$table_name} LIKE %s",
185 + 'role_restriction'
186 + )
187 + );
188 +
189 + if (empty($column_exists)) {
190 + $alter_sql = "ALTER TABLE {$table_name} ADD COLUMN role_restriction VARCHAR(50) DEFAULT 'public' AFTER source_url";
191 + $result = $wpdb->query($alter_sql);
192 +
193 + if ($result === false) {
194 + //error_log("MxChat: Failed to add role_restriction column. Error: " . $wpdb->last_error);
195 + } else {
196 + //error_log("MxChat: Successfully added role_restriction column");
197 +
198 + // Set all existing records to 'public' (everyone can access)
199 + $update_result = $wpdb->query(
200 + "UPDATE {$table_name}
201 + SET role_restriction = 'public'
202 + WHERE role_restriction IS NULL OR role_restriction = ''"
203 + );
204 +
205 + if ($update_result !== false) {
206 + //error_log("MxChat: Updated {$update_result} existing records to public access");
207 + }
208 + }
209 + }
210 +}
211 +
212 +/**
213 + * NEW: Add enabled_bots column to intents table for multi-bot action filtering
214 + */
215 +function mxchat_add_enabled_bots_column() {
216 + global $wpdb;
217 + $table_name = $wpdb->prefix . 'mxchat_intents';
218 +
219 + // Check if table exists first
220 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
221 + if (!$table_exists) {
222 + //error_log("MxChat: Intents table does not exist, cannot add enabled_bots column");
223 + return;
224 + }
225 +
226 + // Check if column already exists
227 + $column_exists = $wpdb->get_results(
228 + $wpdb->prepare(
229 + "SHOW COLUMNS FROM {$table_name} LIKE %s",
230 + 'enabled_bots'
231 + )
232 + );
233 +
234 + if (empty($column_exists)) {
235 + $alter_sql = "ALTER TABLE {$table_name} ADD COLUMN enabled_bots LONGTEXT DEFAULT NULL AFTER enabled";
236 + $result = $wpdb->query($alter_sql);
237 +
238 + if ($result === false) {
239 + //error_log("MxChat: Failed to add enabled_bots column. Error: " . $wpdb->last_error);
240 + } else {
241 + //error_log("MxChat: Successfully added enabled_bots column");
242 +
243 + // Set all existing actions to work with 'default' bot for backward compatibility
244 + $default_bots = json_encode(['default']);
245 + $update_result = $wpdb->query(
246 + $wpdb->prepare(
247 + "UPDATE {$table_name}
248 + SET enabled_bots = %s
249 + WHERE enabled_bots IS NULL OR enabled_bots = ''",
250 + $default_bots
251 + )
252 + );
253 +
254 + if ($update_result !== false) {
255 + //error_log("MxChat: Updated {$update_result} existing actions to work with default bot");
256 + }
257 + }
258 + }
259 +}
260 +
261 +/**
262 + * Create Pinecone role restrictions table
263 + */
264 +function mxchat_create_pinecone_roles_table() {
265 + global $wpdb;
266 +
267 + $table_name = $wpdb->prefix . 'mxchat_pinecone_roles';
268 + $charset_collate = $wpdb->get_charset_collate();
269 +
270 + $sql = "CREATE TABLE $table_name (
271 + id mediumint(9) NOT NULL AUTO_INCREMENT,
272 + vector_id varchar(255) NOT NULL,
273 + source_url text,
274 + role_restriction varchar(50) DEFAULT 'public',
275 + updated_at timestamp DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
276 + PRIMARY KEY (id),
277 + UNIQUE KEY vector_id (vector_id),
278 + KEY role_restriction (role_restriction)
279 + ) $charset_collate;";
280 +
281 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
282 + dbDelta($sql);
283 +}
284 +
285 +function mxchat_activate() {
286 + global $wpdb;
287 + $charset_collate = $wpdb->get_charset_collate();
288 +
289 + //error_log("MxChat: Running activation function");
290 +
291 + // Create chat transcripts table with improved function
292 + mxchat_create_chat_transcripts_table();
293 +
294 + // System Prompt Content Table
295 + $system_prompt_table = $wpdb->prefix . 'mxchat_system_prompt_content';
296 + $sql_system_prompt = "CREATE TABLE $system_prompt_table (
297 + id MEDIUMINT(9) NOT NULL AUTO_INCREMENT,
298 + url VARCHAR(255) NOT NULL,
299 + article_content LONGTEXT NOT NULL,
300 + embedding_vector LONGTEXT,
301 + source_url VARCHAR(255) DEFAULT NULL,
302 + role_restriction VARCHAR(50) DEFAULT 'public',
303 + timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
304 + PRIMARY KEY (id)
305 + ) $charset_collate;";
306 +
307 + // Intents Table - NOW INCLUDES enabled_bots column from the start
308 + $intents_table = $wpdb->prefix . 'mxchat_intents';
309 + $sql_intents_table = "CREATE TABLE $intents_table (
310 + id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
311 + intent_label VARCHAR(255) NOT NULL,
312 + phrases TEXT NOT NULL,
313 + embedding_vector LONGTEXT NOT NULL,
314 + callback_function VARCHAR(255) NOT NULL,
315 + similarity_threshold FLOAT DEFAULT 0.85,
316 + enabled TINYINT(1) NOT NULL DEFAULT 1,
317 + enabled_bots LONGTEXT DEFAULT NULL,
318 + PRIMARY KEY (id)
319 + ) $charset_collate;";
320 +
321 + require_once ABSPATH . 'wp-admin/includes/upgrade.php';
322 +
323 + // Create other tables
324 + dbDelta($sql_system_prompt);
325 + dbDelta($sql_intents_table);
326 +
327 + // Create URL click tracking table
328 + mxchat_create_url_clicks_table();
329 +
330 + //Create Pinecone roles table
331 + mxchat_create_pinecone_roles_table();
332 +
333 + // Ensure additional columns in system prompt table
334 + $existing_system_columns = $wpdb->get_results("SHOW COLUMNS FROM $system_prompt_table");
335 + if (!empty($existing_system_columns)) {
336 + $existing_system_column_names = array_column($existing_system_columns, 'Field');
337 +
338 + if (!in_array('embedding_vector', $existing_system_column_names)) {
339 + $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN embedding_vector LONGTEXT");
340 + }
341 + if (!in_array('source_url', $existing_system_column_names)) {
342 + $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN source_url VARCHAR(255) DEFAULT NULL");
343 + }
344 + if (!in_array('role_restriction', $existing_system_column_names)) {
345 + $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN role_restriction VARCHAR(50) DEFAULT 'public' AFTER source_url");
346 + }
347 + }
348 +
349 + // Set default thresholds for existing intents
350 + $wpdb->query("UPDATE {$intents_table} SET similarity_threshold = 0.85 WHERE similarity_threshold IS NULL");
351 +
352 + // Ensure enabled column exists in intents table
353 + $existing_intent_columns = $wpdb->get_results("SHOW COLUMNS FROM $intents_table");
354 + if (!empty($existing_intent_columns)) {
355 + $existing_intent_column_names = array_column($existing_intent_columns, 'Field');
356 +
357 + if (!in_array('enabled', $existing_intent_column_names)) {
358 + $wpdb->query("ALTER TABLE $intents_table ADD COLUMN enabled TINYINT(1) NOT NULL DEFAULT 1");
359 + }
360 +
361 + // NEW: Ensure enabled_bots column exists for existing installations
362 + if (!in_array('enabled_bots', $existing_intent_column_names)) {
363 + $wpdb->query("ALTER TABLE $intents_table ADD COLUMN enabled_bots LONGTEXT DEFAULT NULL AFTER enabled");
364 +
365 + // Set existing actions to work with default bot
366 + $default_bots = json_encode(['default']);
367 + $wpdb->query($wpdb->prepare(
368 + "UPDATE {$intents_table} SET enabled_bots = %s WHERE enabled_bots IS NULL",
369 + $default_bots
370 + ));
371 + }
372 + }
373 +
374 + // Setup cron jobs
375 + mxchat_setup_cron_jobs();
376 +
377 + // Update version
378 + update_option('mxchat_plugin_version', MXCHAT_VERSION);
379 +
380 + //error_log("MxChat: Activation function completed");
381 +}
382 +
383 +/**
384 + * Setup cron jobs on plugin activation
385 + */
386 +function mxchat_setup_cron_jobs() {
387 + // Clear any existing cron jobs first
388 + wp_clear_scheduled_hook('mxchat_reset_rate_limits');
389 +
390 + // Check if WordPress cron is disabled
391 + if (defined('DISABLE_WP_CRON') && DISABLE_WP_CRON) {
392 + // Set flag to use fallback system
393 + update_option('mxchat_use_fallback_rate_limits', true);
394 + update_option('mxchat_next_rate_limit_check', time() + 3600);
395 + return;
396 + }
397 +
398 + // Schedule the rate limit reset cron job
399 + $result = wp_schedule_event(time() + 300, 'hourly', 'mxchat_reset_rate_limits');
400 +
401 + if ($result === false) {
402 + // Fallback if scheduling fails
403 + update_option('mxchat_use_fallback_rate_limits', true);
404 + update_option('mxchat_next_rate_limit_check', time() + 3600);
405 + } else {
406 + // Clear fallback flags if cron scheduling succeeded
407 + delete_option('mxchat_use_fallback_rate_limits');
408 + }
409 +}
410 +
411 +/**
412 + * Clean up on plugin deactivation
413 + */
414 +function mxchat_deactivate() {
415 + // Clear scheduled cron jobs
416 + wp_clear_scheduled_hook('mxchat_reset_rate_limits');
417 +
418 + // Clear fallback options
419 + delete_option('mxchat_use_fallback_rate_limits');
420 + delete_option('mxchat_next_rate_limit_check');
421 + delete_option('mxchat_fallback_check_interval');
422 +}
423 +
424 +/**
425 + * Check if fallback rate limit cleanup is needed
426 + */
427 +function mxchat_check_fallback_rate_limits() {
428 + $use_fallback = get_option('mxchat_use_fallback_rate_limits', false);
429 +
430 + if (!$use_fallback) {
431 + return;
432 + }
433 +
434 + $next_check = get_option('mxchat_next_rate_limit_check', 0);
435 +
436 + if (time() >= $next_check) {
437 + // Only run reset if the MxChat_Integrator class exists
438 + if (class_exists('MxChat_Integrator')) {
439 + $integrator = new MxChat_Integrator();
440 + if (method_exists($integrator, 'mxchat_reset_rate_limits')) {
441 + $integrator->mxchat_reset_rate_limits();
442 + update_option('mxchat_next_rate_limit_check', time() + 3600);
443 + }
444 + }
445 + }
446 +}
447 +
448 +/**
449 + * Robust update checking with role restriction migration
450 + */
451 +function mxchat_check_for_update() {
452 + global $wpdb; // CRITICAL: Declare this at the top
453 +
454 + try {
455 + $current_version = get_option('mxchat_plugin_version', '0.0.0');
456 + $plugin_version = MXCHAT_VERSION;
457 +
458 + // Always run activation to ensure tables exist (safe for existing installations)
459 + if ($current_version !== $plugin_version) {
460 + //error_log("MxChat: Version change detected: $current_version -> $plugin_version");
461 +
462 + // Run live agent update BEFORE updating the stored version
463 + mxchat_handle_live_agent_update();
464 +
465 + //Run role restriction migration for 2.4.1
466 + if (version_compare($current_version, '2.4.1', '<')) {
467 + mxchat_add_role_restriction_column();
468 + }
469 +
470 + // NEW: Run enabled_bots column migration for 2.4.4
471 + if (version_compare($current_version, '2.4.4', '<')) {
472 + mxchat_add_enabled_bots_column();
473 + }
474 +
475 + // Run activation (this will create/update all tables and columns)
476 + mxchat_activate();
477 +
478 + // Run migration functions
479 + mxchat_migrate_live_agent_status();
480 +
481 + // Add the cleanup function for version 2.1.8
482 + if (version_compare($current_version, '2.1.8', '<')) {
483 + $deleted = mxchat_cleanup_orphaned_chat_history();
484 + }
485 +
486 + // Update version LAST
487 + update_option('mxchat_plugin_version', $plugin_version);
488 +
489 + //error_log("MxChat: Updated from version $current_version to $plugin_version");
490 + }
491 +
492 + // CRITICAL: Always ensure tables exist, even if version matches
493 + // This handles cases where tables were manually deleted
494 + $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
495 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
496 +
497 + if (!$table_exists) {
498 + //error_log("MxChat: Chat transcripts table missing, recreating...");
499 + mxchat_activate(); // Run full activation instead of just table creation
500 + }
501 +
502 + } catch (Exception $e) {
503 + //error_log('MxChat update error: ' . $e->getMessage());
504 + // Don't update version if there was an error
505 + }
506 +}
507 +
508 +/**
509 + * Ensure tables exist on every load for fresh installations
510 + */
511 +function mxchat_ensure_tables_exist() {
512 + global $wpdb;
513 +
514 + // Only run for admin users to avoid performance impact
515 + if (!current_user_can('administrator')) {
516 + return;
517 + }
518 +
519 + $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
520 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
521 +
522 + if (!$table_exists) {
523 + //error_log("MxChat: Tables missing on admin load, running activation");
524 + mxchat_activate();
525 + }
526 +}
527 +
528 +/**
529 + * Clean up orphaned chat history options from the wp_options table
530 + * @return int Number of options deleted
531 + */
532 +function mxchat_cleanup_orphaned_chat_history() {
533 + global $wpdb;
534 + $count = 0;
535 +
536 + // Get all option keys that match our pattern
537 + $history_options = $wpdb->get_results(
538 + "SELECT option_name FROM {$wpdb->options}
539 + WHERE option_name LIKE 'mxchat_history_%'"
540 + );
541 +
542 + if (!empty($history_options)) {
543 + foreach ($history_options as $option) {
544 + // Extract the session ID from the option name
545 + $session_id = str_replace('mxchat_history_', '', $option->option_name);
546 +
547 + // Check if this session still exists in the custom table
548 + $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
549 + $exists = $wpdb->get_var(
550 + $wpdb->prepare(
551 + "SELECT COUNT(*) FROM {$table_name} WHERE session_id = %s",
552 + $session_id
553 + )
554 + );
555 +
556 + // If session doesn't exist in the main table, delete the option
557 + if ($exists == 0) {
558 + delete_option($option->option_name);
559 + // Also delete related metadata
560 + delete_option("mxchat_email_{$session_id}");
561 + delete_option("mxchat_name_{$session_id}");
562 + delete_option("mxchat_agent_name_{$session_id}");
563 + $count++;
564 + }
565 + }
566 + }
567 +
568 + return $count;
569 +}
570 +
571 +function mxchat_migrate_live_agent_status() {
572 + $options = get_option('mxchat_options', []);
573 +
574 + // Check if live_agent_status exists
575 + if (isset($options['live_agent_status'])) {
576 + $current_status = $options['live_agent_status'];
577 + $needs_update = false;
578 +
579 + // Convert to new format if needed
580 + if ($current_status === 'online') {
581 + $options['live_agent_status'] = 'on';
582 + $needs_update = true;
583 + } else if ($current_status === 'offline') {
584 + $options['live_agent_status'] = 'off';
585 + $needs_update = true;
586 + } else if (!in_array($current_status, ['on', 'off'])) {
587 + // Default to off for any unexpected values
588 + $options['live_agent_status'] = 'off';
589 + $needs_update = true;
590 + }
591 +
592 + // Only update if needed
593 + if ($needs_update) {
594 + update_option('mxchat_options', $options);
595 + }
596 + } else {
597 + // If status doesn't exist, set default to off
598 + $options['live_agent_status'] = 'off';
599 + update_option('mxchat_options', $options);
600 + }
601 +}
602 +
603 +function mxchat_handle_live_agent_update() {
604 + // Get the CURRENT stored version (before it gets updated)
605 + $current_version = get_option('mxchat_plugin_version', '0.0.0');
606 + $new_version = '2.2.2';
607 +
608 + // Only run this once for the update to 2.2.2
609 + $update_handled = get_option('mxchat_live_agent_update_2_2_2_handled', false);
610 +
611 + // Check if we're upgrading TO 2.2.2 and haven't handled this yet
612 + if (version_compare($current_version, $new_version, '<') && !$update_handled) {
613 + $options = get_option('mxchat_options', array());
614 +
615 + // Check if live agent was previously enabled
616 + if (isset($options['live_agent_status']) && $options['live_agent_status'] === 'on') {
617 + // Disable live agent
618 + $options['live_agent_status'] = 'off';
619 + update_option('mxchat_options', $options);
620 +
621 + // Set flag to show the notification banner
622 + update_option('mxchat_show_live_agent_disabled_notice', true);
623 + }
624 +
625 + // Mark this update as handled
626 + update_option('mxchat_live_agent_update_2_2_2_handled', true);
627 + }
628 +}
629 +
630 +// Initialize plugin safely
631 +function mxchat_init() {
632 + // Include all class files first
633 + mxchat_include_classes();
634 +
635 + // Run update check
636 + mxchat_check_for_update();
637 +
638 + // CRITICAL: Ensure tables exist (for fresh installations that don't trigger activation hook)
639 + add_action('admin_init', 'mxchat_ensure_tables_exist', 1);
640 +
641 + // Add fallback rate limit check
642 + add_action('init', 'mxchat_check_fallback_rate_limits', 5);
643 +
644 + // Initialize classes with error handling
645 + try {
646 + // Initialize admin classes
647 + if (is_admin()) {
648 + if (class_exists('MxChat_Knowledge_Manager')) {
649 + $mxchat_knowledge_manager = new MxChat_Knowledge_Manager();
650 +
651 + if (class_exists('MxChat_Admin')) {
652 + $mxchat_admin = new MxChat_Admin($mxchat_knowledge_manager);
653 + }
654 + }
655 +
656 + // Initialize meta box class
657 + if (class_exists('MxChat_Meta_Box')) {
658 + new MxChat_Meta_Box();
659 + }
660 + }
661 +
662 + // Initialize public classes
663 + if (class_exists('MxChat_Public')) {
664 + $mxchat_public = new MxChat_Public();
665 + }
666 +
667 + if (class_exists('MxChat_Integrator')) {
668 + $mxchat_integrator = new MxChat_Integrator();
669 + }
670 +
671 + } catch (Exception $e) {
672 + //error_log('MxChat initialization error: ' . $e->getMessage());
673 +
674 + // Show admin notice if there's an error
675 + if (is_admin()) {
676 + add_action('admin_notices', function() use ($e) {
677 + echo '<div class="notice notice-error"><p>';
678 + echo '<strong>MxChat Error:</strong> Plugin initialization failed. ';
679 + echo 'Please check error logs or contact support. Error: ' . esc_html($e->getMessage());
680 + echo '</p></div>';
681 + });
682 + }
683 + }
684 +}
685 +
686 +// Run initialization on plugins_loaded
687 +add_action('plugins_loaded', 'mxchat_init');
688 +
689 +// Register activation hook
690 +register_activation_hook(__FILE__, 'mxchat_activate');
691 +
692 +// Add cron schedule
693 +add_filter('cron_schedules', function($schedules) {
694 + $schedules['one_minute'] = array(
695 + 'interval' => 60,
696 + 'display' => 'Every Minute'
697 + );
698 + return $schedules;
699 +});
700 +
701 +// Register deactivation hook
1468 702 register_deactivation_hook(__FILE__, 'mxchat_deactivate');