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MxChat – AI Chatbot & Content Generation for WordPress / 2.5.8
MxChat – AI Chatbot & Content Generation for WordPress v2.5.8
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← All changes | mxchat-basic.php +971 -176 2.0.32.5.8 View file →
@@ -1,176 +1,971 @@
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: 2.0.3
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 -
19 -function mxchat_load_textdomain() {
20 - load_plugin_textdomain('mxchat', false, dirname(plugin_basename(__FILE__)) . '/languages');
21 -}
22 -add_action('plugins_loaded', 'mxchat_load_textdomain');
23 -
24 -// Include classes
25 -require_once plugin_dir_path(__FILE__) . 'includes/class-mxchat-integrator.php';
26 -require_once plugin_dir_path(__FILE__) . 'includes/class-mxchat-admin.php';
27 -require_once plugin_dir_path(__FILE__) . 'includes/class-mxchat-public.php';
28 -require_once plugin_dir_path(__FILE__) . 'includes/class-mxchat-utils.php';
29 -require_once plugin_dir_path(__FILE__) . 'includes/class-mxchat-user.php';
30 -require_once plugin_dir_path(__FILE__) . 'includes/class-mxchat-woocommerce.php';
31 -require_once plugin_dir_path(__FILE__) . 'includes/pdf-parser/alt_autoload.php';
32 -require_once plugin_dir_path(__FILE__) . 'includes/class-mxchat-word-handler.php';
33 -
34 -function mxchat_activate() {
35 - global $wpdb;
36 - $charset_collate = $wpdb->get_charset_collate();
37 -
38 - // Chat Transcripts Table
39 - $chat_transcripts_table = $wpdb->prefix . 'mxchat_chat_transcripts';
40 - $sql_chat_transcripts = "CREATE TABLE $chat_transcripts_table (
41 - id MEDIUMINT(9) NOT NULL AUTO_INCREMENT,
42 - user_id MEDIUMINT(9) DEFAULT 0,
43 - session_id VARCHAR(255) NOT NULL,
44 - role VARCHAR(255) NOT NULL,
45 - message TEXT NOT NULL,
46 - user_email VARCHAR(255) DEFAULT NULL,
47 - timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
48 - PRIMARY KEY (id)
49 - ) $charset_collate;";
50 -
51 - // System Prompt Content Table
52 - $system_prompt_table = $wpdb->prefix . 'mxchat_system_prompt_content';
53 - $sql_system_prompt = "CREATE TABLE $system_prompt_table (
54 - id MEDIUMINT(9) NOT NULL AUTO_INCREMENT,
55 - url VARCHAR(255) NOT NULL,
56 - article_content LONGTEXT NOT NULL,
57 - embedding_vector LONGTEXT,
58 - source_url VARCHAR(255) DEFAULT NULL,
59 - timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
60 - PRIMARY KEY (id)
61 - ) $charset_collate;";
62 -
63 - // Intents Table
64 - $intents_table = $wpdb->prefix . 'mxchat_intents';
65 - $sql_intents_table = "CREATE TABLE $intents_table (
66 - id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
67 - intent_label VARCHAR(255) NOT NULL,
68 - phrases TEXT NOT NULL,
69 - embedding_vector LONGTEXT NOT NULL,
70 - callback_function VARCHAR(255) NOT NULL,
71 - similarity_threshold FLOAT DEFAULT 0.85,
72 - PRIMARY KEY (id)
73 - ) $charset_collate;";
74 -
75 - require_once ABSPATH . 'wp-admin/includes/upgrade.php';
76 -
77 - // Create or update tables
78 - dbDelta($sql_chat_transcripts);
79 - dbDelta($sql_system_prompt);
80 - dbDelta($sql_intents_table);
81 -
82 - // Ensure additional columns in `mxchat_chat_transcripts`
83 - mxchat_add_missing_columns($chat_transcripts_table, 'user_identifier', 'VARCHAR(255)');
84 - mxchat_add_missing_columns($chat_transcripts_table, 'user_email', 'VARCHAR(255) DEFAULT NULL');
85 -
86 - // Ensure additional columns in `mxchat_system_prompt_content`
87 - mxchat_add_missing_columns($system_prompt_table, 'embedding_vector', 'LONGTEXT');
88 - mxchat_add_missing_columns($system_prompt_table, 'source_url', 'VARCHAR(255) DEFAULT NULL');
89 -
90 - // Set default thresholds for existing intents
91 - $wpdb->query("UPDATE {$intents_table} SET similarity_threshold = 0.85 WHERE similarity_threshold IS NULL");
92 -
93 - // Update plugin version in the database
94 - update_option('mxchat_plugin_version', '2.0.3');
95 -}
96 -
97 -
98 -function mxchat_add_missing_columns($table, $column_name, $column_type) {
99 - global $wpdb;
100 - $column_exists = $wpdb->get_results($wpdb->prepare("SHOW COLUMNS FROM $table LIKE %s", $column_name));
101 - if (empty($column_exists)) {
102 - $wpdb->query("ALTER TABLE $table ADD COLUMN $column_name $column_type");
103 - }
104 -}
105 -
106 -function mxchat_check_for_update() {
107 - $current_version = get_option('mxchat_plugin_version');
108 - $plugin_version = '2.0.3'; // Update with your latest version
109 -
110 - if ($current_version !== $plugin_version) {
111 - mxchat_activate(); // Run the activation script to apply schema changes
112 - mxchat_migrate_live_agent_status(); // Add migration for live agent status
113 - update_option('mxchat_plugin_version', $plugin_version); // Update the version
114 - }
115 -}
116 -
117 -function mxchat_migrate_live_agent_status() {
118 - $options = get_option('mxchat_options', []);
119 -
120 - // Check if live_agent_status exists
121 - if (isset($options['live_agent_status'])) {
122 - $current_status = $options['live_agent_status'];
123 - $needs_update = false;
124 -
125 - // Convert to new format if needed
126 - if ($current_status === 'online') {
127 - $options['live_agent_status'] = 'on';
128 - $needs_update = true;
129 - } else if ($current_status === 'offline') {
130 - $options['live_agent_status'] = 'off';
131 - $needs_update = true;
132 - } else if (!in_array($current_status, ['on', 'off'])) {
133 - // Default to off for any unexpected values
134 - $options['live_agent_status'] = 'off';
135 - $needs_update = true;
136 - }
137 -
138 - // Only update if needed
139 - if ($needs_update) {
140 - update_option('mxchat_options', $options);
141 - }
142 - } else {
143 - // If status doesn't exist, set default to off
144 - $options['live_agent_status'] = 'off';
145 - update_option('mxchat_options', $options);
146 - }
147 -}
148 -
149 -
150 -// Run the update check function on every request
151 -add_action('plugins_loaded', 'mxchat_check_for_update');
152 -
153 -// Register activation hook
154 -register_activation_hook(__FILE__, 'mxchat_activate');
155 -
156 -
157 -add_filter('cron_schedules', function($schedules) {
158 - $schedules['one_minute'] = array(
159 - 'interval' => 60,
160 - 'display' => 'Every Minute'
161 - );
162 - return $schedules;
163 -});
164 -
165 -add_action('init', function() {
166 - add_action('mxchat_process_pdf_pages', array('MxChat_Admin', 'process_pdf_pages_cron'), 10, 5);
167 - add_action('mxchat_process_sitemap_urls', array('MxChat_Admin', 'process_sitemap_urls_cron'), 10, 5);
168 -});
169 -
170 -
171 -// Instantiate classes
172 -if (is_admin()) {
173 - $mxchat_admin = new MxChat_Admin();
174 -}
175 -$mxchat_public = new MxChat_Public();
176 -$mxchat_integrator = new MxChat_Integrator();
1 +<?php
2 +/**
3 + * Plugin Name: MxChat
4 + * Plugin URI: https://mxchat.ai/
5 + * Description: AI chatbot for WordPress with OpenAI, Claude, xAI, DeepSeek, live agent, PDF uploads, WooCommerce, and training on website data.
6 + * Version: 2.5.8
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 + load_plugin_textdomain('mxchat', false, dirname(plugin_basename(__FILE__)) . '/languages');
28 +}
29 +add_action('init', 'mxchat_load_textdomain');
30 +
31 +// Include classes with error handling
32 +function mxchat_include_classes() {
33 + $class_files = array(
34 + 'includes/class-mxchat-integrator.php',
35 + 'includes/class-mxchat-admin.php',
36 + 'includes/class-mxchat-public.php',
37 + 'includes/class-mxchat-utils.php',
38 + 'includes/class-mxchat-user.php',
39 + 'includes/class-mxchat-meta-box.php',
40 + 'includes/pdf-parser/alt_autoload.php',
41 + 'includes/class-mxchat-word-handler.php',
42 + 'admin/class-ajax-handler.php',
43 + 'admin/class-pinecone-manager.php',
44 + 'admin/class-knowledge-manager.php'
45 + );
46 +
47 + foreach ($class_files as $file) {
48 + $file_path = plugin_dir_path(__FILE__) . $file;
49 + if (file_exists($file_path)) {
50 + require_once $file_path;
51 + } else {
52 + //error_log('MxChat: Missing class file - ' . $file);
53 + }
54 + }
55 +}
56 +
57 +/**
58 + * Create URL click tracking table
59 + */
60 +function mxchat_create_url_clicks_table() {
61 + global $wpdb;
62 +
63 + $table_name = $wpdb->prefix . 'mxchat_url_clicks';
64 +
65 + $charset_collate = $wpdb->get_charset_collate();
66 +
67 + $sql = "CREATE TABLE $table_name (
68 + id mediumint(9) NOT NULL AUTO_INCREMENT,
69 + session_id varchar(100) NOT NULL,
70 + clicked_url text NOT NULL,
71 + message_context text,
72 + click_timestamp datetime DEFAULT CURRENT_TIMESTAMP,
73 + user_ip varchar(45),
74 + user_agent text,
75 + PRIMARY KEY (id),
76 + KEY session_id (session_id),
77 + KEY click_timestamp (click_timestamp)
78 + ) $charset_collate;";
79 +
80 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
81 + dbDelta($sql);
82 +}
83 +
84 +/**
85 + * FIXED: Robust table creation and column management
86 + */
87 +function mxchat_create_chat_transcripts_table() {
88 + global $wpdb;
89 +
90 + $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
91 + $charset_collate = $wpdb->get_charset_collate();
92 +
93 + // Create table with ALL columns including user_name from the start
94 + $sql = "CREATE TABLE $table_name (
95 + id MEDIUMINT(9) NOT NULL AUTO_INCREMENT,
96 + user_id MEDIUMINT(9) DEFAULT 0,
97 + session_id VARCHAR(255) NOT NULL,
98 + role VARCHAR(255) NOT NULL,
99 + message TEXT NOT NULL,
100 + user_email VARCHAR(255) DEFAULT NULL,
101 + user_name VARCHAR(100) DEFAULT NULL,
102 + user_identifier VARCHAR(255) DEFAULT NULL,
103 + originating_page_url TEXT DEFAULT NULL,
104 + originating_page_title VARCHAR(500) DEFAULT NULL,
105 + timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
106 + PRIMARY KEY (id),
107 + KEY session_id (session_id),
108 + KEY user_email (user_email),
109 + KEY timestamp (timestamp)
110 + ) $charset_collate;";
111 +
112 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
113 + $result = dbDelta($sql);
114 +
115 + // Log the result for debugging
116 + if (empty($result)) {
117 + //error_log("MxChat: dbDelta returned empty result for chat transcripts table");
118 + } else {
119 + //error_log("MxChat: dbDelta result: " . print_r($result, true));
120 + }
121 +
122 + // IMPORTANT: Ensure all columns exist for existing installations
123 + mxchat_ensure_all_columns($table_name);
124 +}
125 +
126 +/**
127 + * Ensure all required columns exist (for upgrades)
128 + */
129 +function mxchat_ensure_all_columns($table_name) {
130 + global $wpdb;
131 +
132 + // First check if table exists
133 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
134 + if (!$table_exists) {
135 + //error_log("MxChat: Table $table_name does not exist, cannot add columns");
136 + return;
137 + }
138 +
139 + // Define all required columns and their types
140 + $required_columns = [
141 + 'user_identifier' => 'VARCHAR(255) DEFAULT NULL',
142 + 'user_email' => 'VARCHAR(255) DEFAULT NULL',
143 + 'user_name' => 'VARCHAR(100) DEFAULT NULL',
144 + 'originating_page_url' => 'TEXT DEFAULT NULL',
145 + 'originating_page_title' => 'VARCHAR(500) DEFAULT NULL'
146 + ];
147 +
148 + // Get existing columns
149 + $existing_columns = $wpdb->get_results("SHOW COLUMNS FROM $table_name");
150 + if (empty($existing_columns)) {
151 + //error_log("MxChat: Could not get columns for table $table_name");
152 + return;
153 + }
154 +
155 + $existing_column_names = array_column($existing_columns, 'Field');
156 +
157 + // Add missing columns
158 + foreach ($required_columns as $column_name => $column_definition) {
159 + if (!in_array($column_name, $existing_column_names)) {
160 + $alter_sql = "ALTER TABLE $table_name ADD COLUMN $column_name $column_definition";
161 + $result = $wpdb->query($alter_sql);
162 +
163 + if ($result === false) {
164 + //error_log("MxChat: Failed to add column $column_name to $table_name. Error: " . $wpdb->last_error);
165 + } else {
166 + //error_log("MxChat: Successfully added column $column_name to $table_name");
167 + }
168 + }
169 + }
170 +}
171 +
172 +/**
173 + * Add role restriction column to knowledge base table
174 + */
175 +function mxchat_add_role_restriction_column() {
176 + global $wpdb;
177 + $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
178 +
179 + // Check if table exists first
180 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
181 + if (!$table_exists) {
182 + //error_log("MxChat: System prompt content table does not exist, cannot add role_restriction column");
183 + return;
184 + }
185 +
186 + // Check if column already exists
187 + $column_exists = $wpdb->get_results(
188 + $wpdb->prepare(
189 + "SHOW COLUMNS FROM {$table_name} LIKE %s",
190 + 'role_restriction'
191 + )
192 + );
193 +
194 + if (empty($column_exists)) {
195 + $alter_sql = "ALTER TABLE {$table_name} ADD COLUMN role_restriction VARCHAR(50) DEFAULT 'public' AFTER source_url";
196 + $result = $wpdb->query($alter_sql);
197 +
198 + if ($result === false) {
199 + //error_log("MxChat: Failed to add role_restriction column. Error: " . $wpdb->last_error);
200 + } else {
201 + //error_log("MxChat: Successfully added role_restriction column");
202 +
203 + // Set all existing records to 'public' (everyone can access)
204 + $update_result = $wpdb->query(
205 + "UPDATE {$table_name}
206 + SET role_restriction = 'public'
207 + WHERE role_restriction IS NULL OR role_restriction = ''"
208 + );
209 +
210 + if ($update_result !== false) {
211 + //error_log("MxChat: Updated {$update_result} existing records to public access");
212 + }
213 + }
214 + }
215 +}
216 +
217 +/**
218 + * Add enabled_bots column to intents table for multi-bot action filtering
219 + */
220 +function mxchat_add_enabled_bots_column() {
221 + global $wpdb;
222 + $table_name = $wpdb->prefix . 'mxchat_intents';
223 +
224 + // Check if table exists first
225 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
226 + if (!$table_exists) {
227 + //error_log("MxChat: Intents table does not exist, cannot add enabled_bots column");
228 + return;
229 + }
230 +
231 + // Check if column already exists
232 + $column_exists = $wpdb->get_results(
233 + $wpdb->prepare(
234 + "SHOW COLUMNS FROM {$table_name} LIKE %s",
235 + 'enabled_bots'
236 + )
237 + );
238 +
239 + if (empty($column_exists)) {
240 + $alter_sql = "ALTER TABLE {$table_name} ADD COLUMN enabled_bots LONGTEXT DEFAULT NULL AFTER enabled";
241 + $result = $wpdb->query($alter_sql);
242 +
243 + if ($result === false) {
244 + //error_log("MxChat: Failed to add enabled_bots column. Error: " . $wpdb->last_error);
245 + } else {
246 + //error_log("MxChat: Successfully added enabled_bots column");
247 +
248 + // Set all existing actions to work with 'default' bot for backward compatibility
249 + $default_bots = json_encode(['default']);
250 + $update_result = $wpdb->query(
251 + $wpdb->prepare(
252 + "UPDATE {$table_name}
253 + SET enabled_bots = %s
254 + WHERE enabled_bots IS NULL OR enabled_bots = ''",
255 + $default_bots
256 + )
257 + );
258 +
259 + if ($update_result !== false) {
260 + //error_log("MxChat: Updated {$update_result} existing actions to work with default bot");
261 + }
262 + }
263 + }
264 +}
265 +
266 +/**
267 + * Create Pinecone role restrictions table with multi-bot support
268 + */
269 +function mxchat_create_pinecone_roles_table() {
270 + global $wpdb;
271 +
272 + $table_name = $wpdb->prefix . 'mxchat_pinecone_roles';
273 + $charset_collate = $wpdb->get_charset_collate();
274 +
275 + $sql = "CREATE TABLE $table_name (
276 + id mediumint(9) NOT NULL AUTO_INCREMENT,
277 + vector_id varchar(255) NOT NULL,
278 + bot_id varchar(50) NOT NULL DEFAULT 'default',
279 + source_url text,
280 + role_restriction varchar(50) DEFAULT 'public',
281 + updated_at timestamp DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
282 + PRIMARY KEY (id),
283 + UNIQUE KEY vector_bot (vector_id, bot_id),
284 + KEY role_restriction (role_restriction),
285 + KEY bot_id (bot_id)
286 + ) $charset_collate;";
287 +
288 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
289 + dbDelta($sql);
290 +}
291 +
292 +/**
293 + * Add bot_id column to mxchat_pinecone_roles table for multi-bot support
294 + * This migration runs once to update existing installations
295 + */
296 +function mxchat_migrate_pinecone_roles_add_bot_id() {
297 + global $wpdb;
298 +
299 + // Check if migration already ran
300 + $migration_version = get_option('mxchat_pinecone_roles_migration_version', '0');
301 + if (version_compare($migration_version, '2.5.2', '>=')) {
302 + return; // Already migrated
303 + }
304 +
305 + $table_name = $wpdb->prefix . 'mxchat_pinecone_roles';
306 +
307 + // Check if table exists
308 + if ($wpdb->get_var("SHOW TABLES LIKE '{$table_name}'") != $table_name) {
309 + return; // Table doesn't exist yet
310 + }
311 +
312 + // Check if bot_id column already exists
313 + $column_exists = $wpdb->get_results("SHOW COLUMNS FROM {$table_name} LIKE 'bot_id'");
314 +
315 + if (empty($column_exists)) {
316 + // Add bot_id column
317 + $wpdb->query("ALTER TABLE {$table_name} ADD COLUMN bot_id VARCHAR(50) NOT NULL DEFAULT 'default' AFTER vector_id");
318 +
319 + // Update the unique key to include bot_id
320 + $wpdb->query("ALTER TABLE {$table_name} DROP INDEX vector_id");
321 + $wpdb->query("ALTER TABLE {$table_name} ADD UNIQUE KEY vector_bot (vector_id, bot_id)");
322 +
323 + // Add index for bot_id
324 + $wpdb->query("ALTER TABLE {$table_name} ADD KEY bot_id (bot_id)");
325 +
326 + error_log('MxChat: Successfully added bot_id column to mxchat_pinecone_roles table');
327 + }
328 +
329 + // Mark migration as complete
330 + update_option('mxchat_pinecone_roles_migration_version', '2.5.2');
331 +}
332 +
333 +/**
334 + * 2.5.6: Add content_type column to mxchat_system_prompt_content table
335 + * Enables filtering knowledge base by content type (posts, pages, PDFs, etc.)
336 + */
337 +function mxchat_migrate_add_content_type_column() {
338 + global $wpdb;
339 +
340 + // Check if migration already ran
341 + $migration_version = get_option('mxchat_content_type_migration_version', '0');
342 + if (version_compare($migration_version, '2.5.6', '>=')) {
343 + return;
344 + }
345 +
346 + $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
347 +
348 + // Check if table exists
349 + if ($wpdb->get_var("SHOW TABLES LIKE '{$table_name}'") != $table_name) {
350 + return;
351 + }
352 +
353 + // Check if content_type column already exists
354 + $column_exists = $wpdb->get_results("SHOW COLUMNS FROM {$table_name} LIKE 'content_type'");
355 +
356 + if (empty($column_exists)) {
357 + // Add content_type column with default value 'content' for backwards compatibility
358 + $wpdb->query("ALTER TABLE {$table_name} ADD COLUMN content_type VARCHAR(50) DEFAULT 'content' AFTER role_restriction");
359 +
360 + // Add index for better query performance
361 + $wpdb->query("ALTER TABLE {$table_name} ADD KEY content_type (content_type)");
362 +
363 + error_log('MxChat: Successfully added content_type column to mxchat_system_prompt_content table');
364 + }
365 +
366 + // Mark migration as complete
367 + update_option('mxchat_content_type_migration_version', '2.5.6');
368 +}
369 +
370 +/**
371 + * 2.5.2: Create queue processing tables for reliable background processing
372 + */
373 +function mxchat_create_queue_tables() {
374 + global $wpdb;
375 + $charset_collate = $wpdb->get_charset_collate();
376 +
377 + // Main queue table
378 + $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
379 + $sql_queue = "CREATE TABLE $queue_table (
380 + id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
381 + queue_id varchar(64) NOT NULL,
382 + item_type varchar(20) NOT NULL,
383 + item_data longtext NOT NULL,
384 + status varchar(20) NOT NULL DEFAULT 'pending',
385 + bot_id varchar(50) NOT NULL DEFAULT 'default',
386 + priority int(11) NOT NULL DEFAULT 0,
387 + attempts int(11) NOT NULL DEFAULT 0,
388 + max_attempts int(11) NOT NULL DEFAULT 3,
389 + error_message text DEFAULT NULL,
390 + created_at datetime NOT NULL,
391 + started_at datetime DEFAULT NULL,
392 + completed_at datetime DEFAULT NULL,
393 + PRIMARY KEY (id),
394 + KEY queue_id (queue_id),
395 + KEY status (status),
396 + KEY item_type (item_type),
397 + KEY priority (priority)
398 + ) $charset_collate;";
399 +
400 + // Queue metadata table
401 + $meta_table = $wpdb->prefix . 'mxchat_queue_meta';
402 + $sql_meta = "CREATE TABLE $meta_table (
403 + id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
404 + queue_id varchar(64) NOT NULL,
405 + meta_key varchar(255) NOT NULL,
406 + meta_value longtext,
407 + PRIMARY KEY (id),
408 + KEY queue_id (queue_id),
409 + KEY meta_key (meta_key)
410 + ) $charset_collate;";
411 +
412 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
413 + dbDelta($sql_queue);
414 + dbDelta($sql_meta);
415 +
416 + //error_log("MxChat: Queue tables created/updated successfully");
417 +}
418 +
419 +/**
420 + * 2.5.2: Fix URL column size to support long URLs (especially with UTF-8 encoding)
421 + * This fixes "url, source_url. The supplied values may be too long" errors
422 + */
423 +function mxchat_fix_url_column_size() {
424 + global $wpdb;
425 + $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
426 +
427 + // Check if table exists
428 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
429 + if (!$table_exists) {
430 + return;
431 + }
432 +
433 + // Change url and source_url from VARCHAR to TEXT to handle long URLs
434 + // This is especially important for URLs with UTF-8 encoded characters (Hebrew, Arabic, etc.)
435 + $wpdb->query("ALTER TABLE {$table_name} MODIFY COLUMN url TEXT");
436 + $wpdb->query("ALTER TABLE {$table_name} MODIFY COLUMN source_url TEXT");
437 +
438 + //error_log("MxChat: Successfully updated url and source_url columns to TEXT type for long URL support");
439 +}
440 +
441 +/**
442 + * Migrate deprecated AI models to their replacements
443 + * Version 2.5.1: Migrate Claude 3.5 Sonnet (deprecated) to Claude 3.7 Sonnet
444 + */
445 +function mxchat_migrate_deprecated_models() {
446 + $options = get_option('mxchat_options', array());
447 +
448 + // Check if model is set and is the deprecated Claude 3.5 Sonnet
449 + if (isset($options['model']) && $options['model'] === 'claude-3-5-sonnet-20241022') {
450 + // Update to Claude 3.7 Sonnet (the replacement model)
451 + $options['model'] = 'claude-3-7-sonnet-20250219';
452 + update_option('mxchat_options', $options);
453 +
454 + // Set a flag to show admin notice
455 + update_option('mxchat_model_migrated_notice', true);
456 +
457 + //error_log('MxChat: Migrated deprecated Claude 3.5 Sonnet to Claude 3.7 Sonnet');
458 + }
459 +}
460 +
461 +/**
462 + * Show admin notice after model migration
463 + */
464 +function mxchat_show_migration_notice() {
465 + if (get_option('mxchat_model_migrated_notice')) {
466 + ?>
467 + <div class="notice notice-info is-dismissible">
468 + <p>
469 + <strong><?php esc_html_e('MxChat Model Updated', 'mxchat'); ?></strong><br>
470 + <?php esc_html_e('Your chatbot model has been automatically updated from Claude 3.5 Sonnet to Claude 3.7 Sonnet due to the deprecation of the previous model by Anthropic. Claude 3.7 Sonnet offers improved performance and capabilities.', 'mxchat'); ?>
471 + </p>
472 + </div>
473 + <?php
474 + delete_option('mxchat_model_migrated_notice');
475 + }
476 +}
477 +
478 +function mxchat_activate() {
479 + global $wpdb;
480 + $charset_collate = $wpdb->get_charset_collate();
481 +
482 + //error_log("MxChat: Running activation function");
483 +
484 + // Create chat transcripts table with improved function
485 + mxchat_create_chat_transcripts_table();
486 +
487 + // System Prompt Content Table - UPDATED: Use TEXT for url and source_url columns
488 + $system_prompt_table = $wpdb->prefix . 'mxchat_system_prompt_content';
489 + $sql_system_prompt = "CREATE TABLE $system_prompt_table (
490 + id MEDIUMINT(9) NOT NULL AUTO_INCREMENT,
491 + url TEXT NOT NULL,
492 + article_content LONGTEXT NOT NULL,
493 + embedding_vector LONGTEXT,
494 + source_url TEXT DEFAULT NULL,
495 + role_restriction VARCHAR(50) DEFAULT 'public',
496 + content_type VARCHAR(50) DEFAULT 'content',
497 + timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
498 + PRIMARY KEY (id),
499 + KEY content_type (content_type)
500 + ) $charset_collate;";
501 +
502 + // Intents Table - NOW INCLUDES enabled_bots column from the start
503 + $intents_table = $wpdb->prefix . 'mxchat_intents';
504 + $sql_intents_table = "CREATE TABLE $intents_table (
505 + id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
506 + intent_label VARCHAR(255) NOT NULL,
507 + phrases TEXT NOT NULL,
508 + embedding_vector LONGTEXT NOT NULL,
509 + callback_function VARCHAR(255) NOT NULL,
510 + similarity_threshold FLOAT DEFAULT 0.85,
511 + enabled TINYINT(1) NOT NULL DEFAULT 1,
512 + enabled_bots LONGTEXT DEFAULT NULL,
513 + PRIMARY KEY (id)
514 + ) $charset_collate;";
515 +
516 + require_once ABSPATH . 'wp-admin/includes/upgrade.php';
517 +
518 + // Create other tables
519 + dbDelta($sql_system_prompt);
520 + dbDelta($sql_intents_table);
521 +
522 + // Create URL click tracking table
523 + mxchat_create_url_clicks_table();
524 +
525 + // Create Pinecone roles table
526 + mxchat_create_pinecone_roles_table();
527 +
528 + // NEW 2.5.2: Create queue processing tables
529 + mxchat_create_queue_tables();
530 +
531 + // Ensure additional columns in system prompt table
532 + $existing_system_columns = $wpdb->get_results("SHOW COLUMNS FROM $system_prompt_table");
533 + if (!empty($existing_system_columns)) {
534 + $existing_system_column_names = array_column($existing_system_columns, 'Field');
535 +
536 + if (!in_array('embedding_vector', $existing_system_column_names)) {
537 + $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN embedding_vector LONGTEXT");
538 + }
539 + if (!in_array('source_url', $existing_system_column_names)) {
540 + $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN source_url TEXT DEFAULT NULL");
541 + }
542 + if (!in_array('role_restriction', $existing_system_column_names)) {
543 + $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN role_restriction VARCHAR(50) DEFAULT 'public' AFTER source_url");
544 + }
545 + }
546 +
547 + // Set default thresholds for existing intents
548 + $wpdb->query("UPDATE {$intents_table} SET similarity_threshold = 0.85 WHERE similarity_threshold IS NULL");
549 +
550 + // Ensure enabled column exists in intents table
551 + $existing_intent_columns = $wpdb->get_results("SHOW COLUMNS FROM $intents_table");
552 + if (!empty($existing_intent_columns)) {
553 + $existing_intent_column_names = array_column($existing_intent_columns, 'Field');
554 +
555 + if (!in_array('enabled', $existing_intent_column_names)) {
556 + $wpdb->query("ALTER TABLE $intents_table ADD COLUMN enabled TINYINT(1) NOT NULL DEFAULT 1");
557 + }
558 +
559 + // Ensure enabled_bots column exists for existing installations
560 + if (!in_array('enabled_bots', $existing_intent_column_names)) {
561 + $wpdb->query("ALTER TABLE $intents_table ADD COLUMN enabled_bots LONGTEXT DEFAULT NULL AFTER enabled");
562 +
563 + // Set existing actions to work with default bot
564 + $default_bots = json_encode(['default']);
565 + $wpdb->query($wpdb->prepare(
566 + "UPDATE {$intents_table} SET enabled_bots = %s WHERE enabled_bots IS NULL",
567 + $default_bots
568 + ));
569 + }
570 + }
571 +
572 + // Run migration for existing installations
573 + mxchat_migrate_pinecone_roles_add_bot_id();
574 +
575 + // Setup cron jobs
576 + mxchat_setup_cron_jobs();
577 +
578 + // Update version
579 + update_option('mxchat_plugin_version', MXCHAT_VERSION);
580 +
581 + //error_log("MxChat: Activation function completed");
582 +}
583 +
584 +/**
585 + * Setup cron jobs on plugin activation
586 + */
587 +function mxchat_setup_cron_jobs() {
588 + // Clear any existing cron jobs first
589 + wp_clear_scheduled_hook('mxchat_reset_rate_limits');
590 +
591 + // Check if WordPress cron is disabled
592 + if (defined('DISABLE_WP_CRON') && DISABLE_WP_CRON) {
593 + // Set flag to use fallback system
594 + update_option('mxchat_use_fallback_rate_limits', true);
595 + update_option('mxchat_next_rate_limit_check', time() + 3600);
596 + return;
597 + }
598 +
599 + // Schedule the rate limit reset cron job
600 + $result = wp_schedule_event(time() + 300, 'hourly', 'mxchat_reset_rate_limits');
601 +
602 + if ($result === false) {
603 + // Fallback if scheduling fails
604 + update_option('mxchat_use_fallback_rate_limits', true);
605 + update_option('mxchat_next_rate_limit_check', time() + 3600);
606 + } else {
607 + // Clear fallback flags if cron scheduling succeeded
608 + delete_option('mxchat_use_fallback_rate_limits');
609 + }
610 +
611 + // Schedule transcript cleanup if configured
612 + $transcript_options = get_option('mxchat_transcripts_options', array());
613 + $cleanup_interval = isset($transcript_options['mxchat_auto_delete_transcripts']) ? $transcript_options['mxchat_auto_delete_transcripts'] : 'never';
614 +
615 + if ($cleanup_interval !== 'never') {
616 + // Check if not already scheduled
617 + if (!wp_next_scheduled('mxchat_cleanup_old_transcripts')) {
618 + // Schedule to run daily at 3 AM
619 + $next_run = strtotime('tomorrow 3:00 AM');
620 + wp_schedule_event($next_run, 'daily', 'mxchat_cleanup_old_transcripts');
621 + }
622 + }
623 +}
624 +
625 +/**
626 + * Clean up on plugin deactivation
627 + */
628 +function mxchat_deactivate() {
629 + // Clear scheduled cron jobs
630 + wp_clear_scheduled_hook('mxchat_reset_rate_limits');
631 + wp_clear_scheduled_hook('mxchat_cleanup_old_transcripts');
632 + wp_clear_scheduled_hook('mxchat_send_delayed_transcript');
633 +
634 + // Clear fallback options
635 + delete_option('mxchat_use_fallback_rate_limits');
636 + delete_option('mxchat_next_rate_limit_check');
637 + delete_option('mxchat_fallback_check_interval');
638 +
639 + // NOTE: We do NOT delete queue tables on deactivation
640 + // This preserves data if user accidentally deactivates the plugin
641 +}
642 +
643 +/**
644 + * Check if fallback rate limit cleanup is needed
645 + */
646 +function mxchat_check_fallback_rate_limits() {
647 + $use_fallback = get_option('mxchat_use_fallback_rate_limits', false);
648 +
649 + if (!$use_fallback) {
650 + return;
651 + }
652 +
653 + $next_check = get_option('mxchat_next_rate_limit_check', 0);
654 +
655 + if (time() >= $next_check) {
656 + // Only run reset if the MxChat_Integrator class exists
657 + if (class_exists('MxChat_Integrator')) {
658 + $integrator = new MxChat_Integrator();
659 + if (method_exists($integrator, 'mxchat_reset_rate_limits')) {
660 + $integrator->mxchat_reset_rate_limits();
661 + update_option('mxchat_next_rate_limit_check', time() + 3600);
662 + }
663 + }
664 + }
665 +}
666 +
667 +/**
668 + * Robust update checking with role restriction migration, model deprecation, and queue tables
669 + * CRITICAL: This runs on EVERY page load to ensure tables exist
670 + */
671 +function mxchat_check_for_update() {
672 + global $wpdb;
673 +
674 + try {
675 + $current_version = get_option('mxchat_plugin_version', '0.0.0');
676 + $plugin_version = MXCHAT_VERSION;
677 +
678 + // Always ensure critical tables exist (even if version matches)
679 + // This handles manual table deletion or fresh installs
680 + $chat_table = $wpdb->prefix . 'mxchat_chat_transcripts';
681 + $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
682 +
683 + $chat_exists = $wpdb->get_var("SHOW TABLES LIKE '$chat_table'") === $chat_table;
684 + $queue_exists = $wpdb->get_var("SHOW TABLES LIKE '$queue_table'") === $queue_table;
685 +
686 + if (!$chat_exists || !$queue_exists) {
687 + //error_log("MxChat: Critical tables missing, running activation");
688 + mxchat_activate();
689 + }
690 +
691 + // Version-specific migrations
692 + if ($current_version !== $plugin_version) {
693 + //error_log("MxChat: Version change detected: $current_version -> $plugin_version");
694 +
695 + // Run live agent update BEFORE updating the stored version
696 + mxchat_handle_live_agent_update();
697 +
698 + // Run role restriction migration for 2.4.1
699 + if (version_compare($current_version, '2.4.1', '<')) {
700 + mxchat_add_role_restriction_column();
701 + }
702 +
703 + // Run enabled_bots column migration for 2.4.4
704 + if (version_compare($current_version, '2.4.4', '<')) {
705 + mxchat_add_enabled_bots_column();
706 + }
707 +
708 + // Run model migration for 2.5.1 (Claude deprecation)
709 + if (version_compare($current_version, '2.5.1', '<')) {
710 + mxchat_migrate_deprecated_models();
711 + }
712 +
713 + // 2.5.2: Ensure queue tables exist and fix URL column sizes for all users upgrading to 2.5.2
714 + if (version_compare($current_version, '2.5.2', '<')) {
715 + mxchat_create_queue_tables();
716 + mxchat_fix_url_column_size(); // NEW: Fix URL column size for long URLs
717 + //error_log("MxChat: Queue tables created and URL columns updated for upgrade to 2.5.2");
718 + }
719 +
720 + // Run full activation to ensure everything is up to date
721 + mxchat_activate();
722 +
723 + // Run migration functions
724 + mxchat_migrate_live_agent_status();
725 +
726 + // Add the cleanup function for version 2.1.8
727 + if (version_compare($current_version, '2.1.8', '<')) {
728 + $deleted = mxchat_cleanup_orphaned_chat_history();
729 + }
730 +
731 + // Update version LAST
732 + update_option('mxchat_plugin_version', $plugin_version);
733 +
734 + //error_log("MxChat: Updated from version $current_version to $plugin_version");
735 + }
736 +
737 + } catch (Exception $e) {
738 + //error_log('MxChat update error: ' . $e->getMessage());
739 + // Don't update version if there was an error
740 + }
741 +}
742 +
743 +/**
744 + * Ensure tables exist on every admin load for fresh installations
745 + * This is a safety net for cases where activation hook doesn't fire
746 + */
747 +function mxchat_ensure_tables_exist() {
748 + global $wpdb;
749 +
750 + // Only run for admin users to avoid performance impact
751 + if (!current_user_can('administrator')) {
752 + return;
753 + }
754 +
755 + // Check if we've already verified tables in this session
756 + static $tables_checked = false;
757 + if ($tables_checked) {
758 + return;
759 + }
760 + $tables_checked = true;
761 +
762 + $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
763 + $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
764 +
765 + $chat_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
766 + $queue_exists = $wpdb->get_var("SHOW TABLES LIKE '$queue_table'") === $queue_table;
767 +
768 + if (!$chat_exists || !$queue_exists) {
769 + //error_log("MxChat: Tables missing on admin load, running activation");
770 + mxchat_activate();
771 + }
772 +}
773 +
774 +/**
775 + * Clean up orphaned chat history options from the wp_options table
776 + * @return int Number of options deleted
777 + */
778 +function mxchat_cleanup_orphaned_chat_history() {
779 + global $wpdb;
780 + $count = 0;
781 +
782 + // Get all option keys that match our pattern
783 + $history_options = $wpdb->get_results(
784 + "SELECT option_name FROM {$wpdb->options}
785 + WHERE option_name LIKE 'mxchat_history_%'"
786 + );
787 +
788 + if (!empty($history_options)) {
789 + foreach ($history_options as $option) {
790 + // Extract the session ID from the option name
791 + $session_id = str_replace('mxchat_history_', '', $option->option_name);
792 +
793 + // Check if this session still exists in the custom table
794 + $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
795 + $exists = $wpdb->get_var(
796 + $wpdb->prepare(
797 + "SELECT COUNT(*) FROM {$table_name} WHERE session_id = %s",
798 + $session_id
799 + )
800 + );
801 +
802 + // If session doesn't exist in the main table, delete the option
803 + if ($exists == 0) {
804 + delete_option($option->option_name);
805 + // Also delete related metadata
806 + delete_option("mxchat_email_{$session_id}");
807 + delete_option("mxchat_name_{$session_id}");
808 + delete_option("mxchat_agent_name_{$session_id}");
809 + $count++;
810 + }
811 + }
812 + }
813 +
814 + return $count;
815 +}
816 +
817 +function mxchat_migrate_live_agent_status() {
818 + $options = get_option('mxchat_options', []);
819 +
820 + // Check if live_agent_status exists
821 + if (isset($options['live_agent_status'])) {
822 + $current_status = $options['live_agent_status'];
823 + $needs_update = false;
824 +
825 + // Convert to new format if needed
826 + if ($current_status === 'online') {
827 + $options['live_agent_status'] = 'on';
828 + $needs_update = true;
829 + } else if ($current_status === 'offline') {
830 + $options['live_agent_status'] = 'off';
831 + $needs_update = true;
832 + } else if (!in_array($current_status, ['on', 'off'])) {
833 + // Default to off for any unexpected values
834 + $options['live_agent_status'] = 'off';
835 + $needs_update = true;
836 + }
837 +
838 + // Only update if needed
839 + if ($needs_update) {
840 + update_option('mxchat_options', $options);
841 + }
842 + } else {
843 + // If status doesn't exist, set default to off
844 + $options['live_agent_status'] = 'off';
845 + update_option('mxchat_options', $options);
846 + }
847 +}
848 +
849 +function mxchat_handle_live_agent_update() {
850 + // Get the CURRENT stored version (before it gets updated)
851 + $current_version = get_option('mxchat_plugin_version', '0.0.0');
852 + $new_version = '2.2.2';
853 +
854 + // Only run this once for the update to 2.2.2
855 + $update_handled = get_option('mxchat_live_agent_update_2_2_2_handled', false);
856 +
857 + // Check if we're upgrading TO 2.2.2 and haven't handled this yet
858 + if (version_compare($current_version, $new_version, '<') && !$update_handled) {
859 + $options = get_option('mxchat_options', array());
860 +
861 + // Check if live agent was previously enabled
862 + if (isset($options['live_agent_status']) && $options['live_agent_status'] === 'on') {
863 + // Disable live agent
864 + $options['live_agent_status'] = 'off';
865 + update_option('mxchat_options', $options);
866 +
867 + // Set flag to show the notification banner
868 + update_option('mxchat_show_live_agent_disabled_notice', true);
869 + }
870 +
871 + // Mark this update as handled
872 + update_option('mxchat_live_agent_update_2_2_2_handled', true);
873 + }
874 +}
875 +
876 +// Initialize plugin safely
877 +function mxchat_init() {
878 + // Include all class files first
879 + mxchat_include_classes();
880 +
881 + // Run update check (this also ensures tables exist)
882 + mxchat_check_for_update();
883 +
884 + // CRITICAL: Ensure tables exist on admin pages (safety net)
885 + add_action('admin_init', 'mxchat_ensure_tables_exist', 1);
886 +
887 + // Add fallback rate limit check
888 + add_action('init', 'mxchat_check_fallback_rate_limits', 5);
889 +
890 + // Add migration notice hook
891 + add_action('admin_notices', 'mxchat_show_migration_notice');
892 +
893 + // Initialize classes with error handling
894 + try {
895 + // Initialize admin classes
896 + if (is_admin()) {
897 + if (class_exists('MxChat_Knowledge_Manager')) {
898 + $mxchat_knowledge_manager = new MxChat_Knowledge_Manager();
899 +
900 + if (class_exists('MxChat_Admin')) {
901 + $mxchat_admin = new MxChat_Admin($mxchat_knowledge_manager);
902 + }
903 + }
904 +
905 + // Initialize meta box class
906 + if (class_exists('MxChat_Meta_Box')) {
907 + new MxChat_Meta_Box();
908 + }
909 + }
910 +
911 + // Initialize public classes
912 + if (class_exists('MxChat_Public')) {
913 + $mxchat_public = new MxChat_Public();
914 + }
915 +
916 + if (class_exists('MxChat_Integrator')) {
917 + global $mxchat_integrator;
918 + $mxchat_integrator = new MxChat_Integrator();
919 + }
920 +
921 + } catch (Exception $e) {
922 + //error_log('MxChat initialization error: ' . $e->getMessage());
923 +
924 + // Show admin notice if there's an error
925 + if (is_admin()) {
926 + add_action('admin_notices', function() use ($e) {
927 + echo '<div class="notice notice-error"><p>';
928 + echo '<strong>MxChat Error:</strong> Plugin initialization failed. ';
929 + echo 'Please check error logs or contact support. Error: ' . esc_html($e->getMessage());
930 + echo '</p></div>';
931 + });
932 + }
933 + }
934 +}
935 +
936 +// Run initialization on plugins_loaded
937 +add_action('plugins_loaded', 'mxchat_init');
938 +
939 +// Run migration check on admin init (for auto-updates without reactivation)
940 +add_action('admin_init', 'mxchat_check_and_run_migrations');
941 +
942 +/**
943 + * Check and run migrations on admin init
944 + * This ensures migrations run even when plugin is auto-updated
945 + */
946 +function mxchat_check_and_run_migrations() {
947 + // Only run in admin and not on every request
948 + static $checked = false;
949 + if ($checked) {
950 + return;
951 + }
952 + $checked = true;
953 +
954 + mxchat_migrate_pinecone_roles_add_bot_id();
955 + mxchat_migrate_add_content_type_column();
956 +}
957 +
958 +// Register activation hook
959 +register_activation_hook(__FILE__, 'mxchat_activate');
960 +
961 +// Add cron schedule
962 +add_filter('cron_schedules', function($schedules) {
963 + $schedules['one_minute'] = array(
964 + 'interval' => 60,
965 + 'display' => 'Every Minute'
966 + );
967 + return $schedules;
968 +});
969 +
970 +// Register deactivation hook
971 +register_deactivation_hook(__FILE__, 'mxchat_deactivate');