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MxChat – AI Chatbot & Content Generation for WordPress / 3.2.7
MxChat – AI Chatbot & Content Generation for WordPress v3.2.7
3.2.21 3.2.20 3.2.19 3.2.18 3.2.17 3.2.16 3.2.15 3.2.14 3.2.12 3.2.13 3.2.11 3.2.10 3.2.9 3.2.8 3.2.7 3.2.6 3.2.5 3.2.4 3.2.3 3.2.2 3.2.1 2.0.3 2.0.4 2.0.5 2.0.6 All 152 releases
← All changes | mxchat-basic.php +1674 -176 2.0.5 → 3.2.7 View file →
@@ -1,176 +1,1674 @@
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: 2.0.5
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 -
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', '2.0.5');
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 - $plugin_version = '2.0.5'; // Update with your latest version
109 -
110 - if ($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: 3.2.7
7 + * Author: MxChat
8 + * Author URI: https://mxchat.ai
9 + * License: GPLv2 or later
10 + * License URI: https://www.gnu.org/licenses/gpl-2.0.html
11 + * Text Domain: mxchat
12 + * Domain Path: /languages
13 + */
14 +
15 +if (!defined('ABSPATH')) {
16 + exit; // Exit if accessed directly.
17 +}
18 +
19 +
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 + * One-time migration: gemini-3-pro-preview was shut down by Google on March 9, 2026.
51 + * Existing installs with the dead ID get auto-remapped to gemini-3.1-pro-preview
52 + * (Google's official migration target) the first time admin_init fires after update.
53 + */
54 +add_action('admin_init', function () {
55 + if (get_option('mxchat_gemini_3_remap_done')) {
56 + return;
57 + }
58 + $opts = get_option('mxchat_options');
59 + if (is_array($opts) && isset($opts['model']) && $opts['model'] === 'gemini-3-pro-preview') {
60 + $opts['model'] = 'gemini-3.1-pro-preview';
61 + update_option('mxchat_options', $opts);
62 + }
63 + if (is_array($opts) && isset($opts['content_model']) && $opts['content_model'] === 'gemini-3-pro-preview') {
64 + $opts['content_model'] = 'gemini-3.1-pro-preview';
65 + update_option('mxchat_options', $opts);
66 + }
67 + update_option('mxchat_gemini_3_remap_done', 1);
68 +});
69 +
70 +/**
71 + * One-time migration: the Grok 2 family was retired by xAI (grok-2, grok-2-1212,
72 + * grok-2-latest, grok-2-vision-1212 all return 400 "Model not found"). Existing
73 + * installs with the dead ID get auto-remapped to grok-4-1-fast-non-reasoning
74 + * (modern, fast, broadly available) the first time admin_init fires after update.
75 + */
76 +add_action('admin_init', function () {
77 + if (get_option('mxchat_grok_2_remap_done')) {
78 + return;
79 + }
80 + $opts = get_option('mxchat_options');
81 + if (is_array($opts) && isset($opts['model']) && $opts['model'] === 'grok-2') {
82 + $opts['model'] = 'grok-4-1-fast-non-reasoning';
83 + update_option('mxchat_options', $opts);
84 + }
85 + if (is_array($opts) && isset($opts['content_model']) && $opts['content_model'] === 'grok-2') {
86 + $opts['content_model'] = 'grok-4-1-fast-non-reasoning';
87 + update_option('mxchat_options', $opts);
88 + }
89 + update_option('mxchat_grok_2_remap_done', 1);
90 +});
91 +
92 +/**
93 + * Exclude MxChat assets from caching plugin optimizations
94 + *
95 + * This prevents issues with WP Rocket, LiteSpeed Cache, Autoptimize, WP Super Cache,
96 + * W3 Total Cache, SG Optimizer, and similar plugins that may break the chatbot by
97 + * removing "unused" CSS, minifying/combining JS, or deferring/delaying jQuery.
98 + *
99 + * Both chat-script.js and floating-script.js depend on jQuery, so jQuery must also
100 + * be excluded from any optimization that changes load order or timing.
101 + */
102 +
103 +// ── WP Rocket ────────────────────────────────────────────────────────────────
104 +
105 +// Exclude from Remove Unused CSS (RUCSS)
106 +add_filter('rocket_rucss_inline_atts_exclusions', function($exclusions) {
107 + if (!is_array($exclusions)) $exclusions = array();
108 + $exclusions[] = 'mxchat';
109 + return $exclusions;
110 +});
111 +
112 +// Exclude CSS from minification/combination
113 +add_filter('rocket_exclude_css', function($excluded) {
114 + if (!is_array($excluded)) $excluded = array();
115 + $excluded[] = '/plugins/mxchat-basic/css/chat-style.css';
116 + return $excluded;
117 +});
118 +
119 +// Exclude JS from minification/combination
120 +add_filter('rocket_exclude_js', function($excluded) {
121 + if (!is_array($excluded)) $excluded = array();
122 + $excluded[] = '/plugins/mxchat-basic/js/chat-script.js';
123 + $excluded[] = '/plugins/mxchat-basic/js/floating-script.js';
124 + $excluded[] = '/jquery-core';
125 + $excluded[] = '/jquery.min.js';
126 + $excluded[] = '/jquery.js';
127 + $excluded[] = '/jquery-migrate';
128 + return $excluded;
129 +});
130 +
131 +// Exclude JS from defer
132 +add_filter('rocket_exclude_defer_js', function($excluded) {
133 + if (!is_array($excluded)) $excluded = array();
134 + $excluded[] = '/plugins/mxchat-basic/js/chat-script.js';
135 + $excluded[] = '/plugins/mxchat-basic/js/floating-script.js';
136 + $excluded[] = '/jquery-core';
137 + $excluded[] = '/jquery.min.js';
138 + $excluded[] = '/jquery.js';
139 + $excluded[] = '/jquery-migrate';
140 + return $excluded;
141 +});
142 +
143 +// Exclude from delay JS execution
144 +add_filter('rocket_delay_js_exclusions', function($excluded) {
145 + if (!is_array($excluded)) $excluded = array();
146 + $excluded[] = 'mxchat';
147 + $excluded[] = 'chat-script';
148 + $excluded[] = 'floating-script';
149 + $excluded[] = '/jquery-core';
150 + $excluded[] = '/jquery.min.js';
151 + $excluded[] = '/jquery.js';
152 + $excluded[] = '/jquery-migrate';
153 + return $excluded;
154 +});
155 +
156 +// ── LiteSpeed Cache ──────────────────────────────────────────────────────────
157 +
158 +// Exclude CSS from optimization
159 +add_filter('litespeed_optimize_css_excludes', function($excluded) {
160 + if (!is_array($excluded)) $excluded = array();
161 + $excluded[] = 'chat-style.css';
162 + $excluded[] = 'mxchat';
163 + return $excluded;
164 +});
165 +
166 +// Exclude from UCSS (Unique CSS) - prevents LiteSpeed from stripping "unused" MxChat CSS
167 +add_filter('litespeed_ucss_whitelist', function($whitelist) {
168 + if (!is_array($whitelist)) $whitelist = array();
169 + $whitelist[] = '.mxchat-chatbot-wrapper';
170 + $whitelist[] = '.floating-chatbot';
171 + $whitelist[] = '.floating-chatbot-button';
172 + $whitelist[] = '.chatbot-top-bar';
173 + $whitelist[] = '.mxchat-chatbot';
174 + $whitelist[] = '.chat-container';
175 + $whitelist[] = '.chat-box';
176 + $whitelist[] = '.bot-message';
177 + $whitelist[] = '.input-container';
178 + $whitelist[] = '.chat-input';
179 + $whitelist[] = '.send-button';
180 + $whitelist[] = '.pre-chat-message';
181 + $whitelist[] = '.mxchat-popular-questions';
182 + $whitelist[] = '.chat-toolbar';
183 + $whitelist[] = '.exit-chat';
184 + $whitelist[] = '.email-blocker';
185 + return $whitelist;
186 +});
187 +
188 +// Exclude CSS from CCSS (Critical CSS) generation
189 +add_filter('litespeed_optm_ccss_exc', function($excluded) {
190 + if (!is_array($excluded)) $excluded = array();
191 + $excluded[] = 'chat-style.css';
192 + $excluded[] = 'mxchat';
193 + return $excluded;
194 +});
195 +
196 +// Exclude JS from defer
197 +add_filter('litespeed_optm_js_defer_exc', function($excluded) {
198 + if (!is_array($excluded)) $excluded = array();
199 + $excluded[] = 'chat-script.js';
200 + $excluded[] = 'floating-script.js';
201 + $excluded[] = 'mxchat';
202 + $excluded[] = 'jquery.min.js';
203 + $excluded[] = 'jquery.js';
204 + return $excluded;
205 +});
206 +
207 +// Exclude JS from combining
208 +add_filter('litespeed_optm_js_exc', function($excluded) {
209 + if (!is_array($excluded)) $excluded = array();
210 + $excluded[] = 'chat-script.js';
211 + $excluded[] = 'floating-script.js';
212 + $excluded[] = 'mxchat';
213 + $excluded[] = 'jquery.min.js';
214 + $excluded[] = 'jquery.js';
215 + return $excluded;
216 +});
217 +
218 +// Exclude JS from delayed execution
219 +add_filter('litespeed_optm_js_delay_exc', function($excluded) {
220 + if (!is_array($excluded)) $excluded = array();
221 + $excluded[] = 'chat-script.js';
222 + $excluded[] = 'floating-script.js';
223 + $excluded[] = 'mxchat';
224 + return $excluded;
225 +});
226 +
227 +// Exclude from Guest Mode optimization
228 +add_filter('litespeed_guest_optm_exc', function($excluded) {
229 + if (!is_array($excluded)) $excluded = array();
230 + $excluded[] = 'mxchat';
231 + $excluded[] = 'chat-style';
232 + $excluded[] = 'chat-script';
233 + $excluded[] = 'floating-script';
234 + return $excluded;
235 +});
236 +
237 +// ── Autoptimize ──────────────────────────────────────────────────────────────
238 +
239 +// Exclude CSS from optimization (comma-separated strings)
240 +add_filter('autoptimize_filter_css_exclude', function($excluded) {
241 + if (!is_string($excluded)) $excluded = '';
242 + return $excluded . ', mxchat, chat-style.css';
243 +});
244 +
245 +// Exclude JS from optimization (comma-separated strings)
246 +add_filter('autoptimize_filter_js_exclude', function($excluded) {
247 + if (!is_string($excluded)) $excluded = '';
248 + return $excluded . ', mxchat, chat-script.js, floating-script.js, jquery.min.js, jquery.js';
249 +});
250 +
251 +// ── SG Optimizer (SiteGround) ────────────────────────────────────────────────
252 +
253 +add_filter('sgo_js_minify_exclude', function($excluded) {
254 + if (!is_array($excluded)) $excluded = array();
255 + $excluded[] = 'chat-script.js';
256 + $excluded[] = 'floating-script.js';
257 + $excluded[] = 'jquery.min.js';
258 + return $excluded;
259 +});
260 +
261 +add_filter('sgo_javascript_combine_exclude', function($excluded) {
262 + if (!is_array($excluded)) $excluded = array();
263 + $excluded[] = 'chat-script.js';
264 + $excluded[] = 'floating-script.js';
265 + $excluded[] = 'jquery.min.js';
266 + return $excluded;
267 +});
268 +
269 +add_filter('sgo_js_async_exclude', function($excluded) {
270 + if (!is_array($excluded)) $excluded = array();
271 + $excluded[] = 'chat-script.js';
272 + $excluded[] = 'floating-script.js';
273 + $excluded[] = 'jquery.min.js';
274 + return $excluded;
275 +});
276 +
277 +// ── W3 Total Cache ───────────────────────────────────────────────────────────
278 +
279 +add_filter('w3tc_minify_js_do_tag_minification', function($do_minify, $script_tag, $file) {
280 + if (strpos($file, 'chat-script.js') !== false ||
281 + strpos($file, 'floating-script.js') !== false ||
282 + strpos($file, 'jquery.min.js') !== false ||
283 + strpos($file, 'jquery.js') !== false) {
284 + return false;
285 + }
286 + return $do_minify;
287 +}, 10, 3);
288 +
289 +// ── WP Super Cache ──────────────────────────────────────────────────────────
290 +
291 +add_filter('wpsc_rejected_uri', function($rejected) {
292 + if (!is_array($rejected)) $rejected = array();
293 + $rejected[] = 'wp-admin/admin-ajax.php';
294 + return $rejected;
295 +});
296 +
297 +// ── Page-cache bypass for chat AJAX (companion to the 3.2.6 nonce-race hotfix)
298 +// Each cache plugin gets its own filter export so that visitors hitting an
299 +// edge-cached page never receive cached chat-AJAX responses. The chat send /
300 +// stream send / file upload all POST to /wp-admin/admin-ajax.php with
301 +// `action=mxchat_*`. Without these exports, a cache plugin can stale a response
302 +// and break the per-session nonce flow on the first message.
303 +
304 +// WP Rocket — `rocket_cache_reject_uri` takes a flat array of regex strings.
305 +add_filter('rocket_cache_reject_uri', function($uris) {
306 + if (!is_array($uris)) $uris = array();
307 + $uris[] = '/wp-admin/admin-ajax\.php\?action=mxchat_.*';
308 + return $uris;
309 +});
310 +
311 +// LiteSpeed Cache — `litespeed_cache_no_cache_for_request` short-circuits
312 +// caching when the request matches our chat-AJAX pattern.
313 +add_filter('litespeed_cache_no_cache_for_request', function($no_cache) {
314 + if ($no_cache) return $no_cache;
315 + if (!empty($_SERVER['REQUEST_URI']) &&
316 + strpos($_SERVER['REQUEST_URI'], '/wp-admin/admin-ajax.php') !== false &&
317 + !empty($_REQUEST['action']) &&
318 + strpos((string) $_REQUEST['action'], 'mxchat_') === 0) {
319 + return true;
320 + }
321 + return $no_cache;
322 +});
323 +
324 +// W3 Total Cache — `w3tc_pgcache_request_skip_uri` flips page-cache off when
325 +// the URI matches.
326 +add_filter('w3tc_pgcache_request_skip_uri', function($skip) {
327 + if ($skip) return $skip;
328 + if (!empty($_SERVER['REQUEST_URI']) &&
329 + strpos($_SERVER['REQUEST_URI'], '/wp-admin/admin-ajax.php') !== false &&
330 + !empty($_REQUEST['action']) &&
331 + strpos((string) $_REQUEST['action'], 'mxchat_') === 0) {
332 + return true;
333 + }
334 + return $skip;
335 +});
336 +
337 +// FlyingPress — `flying_press_cacheable` takes a boolean and is run per
338 +// request. Same pattern as LiteSpeed / W3TC.
339 +add_filter('flying_press_cacheable', function($cacheable) {
340 + if (!$cacheable) return $cacheable;
341 + if (!empty($_SERVER['REQUEST_URI']) &&
342 + strpos($_SERVER['REQUEST_URI'], '/wp-admin/admin-ajax.php') !== false &&
343 + !empty($_REQUEST['action']) &&
344 + strpos((string) $_REQUEST['action'], 'mxchat_') === 0) {
345 + return false;
346 + }
347 + return $cacheable;
348 +});
349 +
350 +// Include classes with error handling
351 +function mxchat_include_classes() {
352 + $class_files = array(
353 + 'includes/class-mxchat-integrator.php',
354 + 'includes/class-mxchat-admin.php',
355 + 'includes/class-mxchat-public.php',
356 + 'includes/class-mxchat-utils.php',
357 + 'includes/class-mxchat-user.php',
358 + 'includes/class-mxchat-meta-box.php',
359 + 'includes/class-mxchat-chunker.php',
360 + 'includes/class-mxchat-word-handler.php',
361 + 'includes/class-mxchat-content-generator.php',
362 + 'includes/class-rest-api.php',
363 + 'admin/class-ajax-handler.php',
364 + 'admin/class-pinecone-manager.php',
365 + 'admin/class-knowledge-manager.php'
366 + );
367 +
368 + foreach ($class_files as $file) {
369 + $file_path = plugin_dir_path(__FILE__) . $file;
370 + if (file_exists($file_path)) {
371 + require_once $file_path;
372 + } else {
373 + //error_log('MxChat: Missing class file - ' . $file);
374 + }
375 + }
376 +
377 + // Admin pages that aren't classes (procedural include).
378 + if (is_admin()) {
379 + $admin_api_page = plugin_dir_path(__FILE__) . 'includes/admin-api-page.php';
380 + if (file_exists($admin_api_page)) {
381 + require_once $admin_api_page;
382 + }
383 + // f7c7d4 renamed this file admin-dashboard-page.php → admin-onboarding-page.php.
384 + // The require MUST live here (admin bootstrap) and not just inside
385 + // mxchat_add_plugin_page() on the admin_menu hook — admin_menu does NOT
386 + // fire on admin-ajax.php requests, so the wizard's AJAX handlers
387 + // (plan-905439: mxchat_onboarding_kb_status / save_step / mark_step /
388 + // auto_graduate + the f7c7d4 dismiss handler) would never register.
389 + $admin_onboarding_page = plugin_dir_path(__FILE__) . 'includes/admin-onboarding-page.php';
390 + if (file_exists($admin_onboarding_page)) {
391 + require_once $admin_onboarding_page;
392 + }
393 + }
394 +}
395 +
396 +/**
397 + * Lazy-load the PDF parser library only when needed.
398 + * Avoids loading 44 files on every page request.
399 + */
400 +function mxchat_load_pdf_parser() {
401 + if (class_exists('\Smalot\PdfParser\Parser')) {
402 + return true;
403 + }
404 + $autoload_path = plugin_dir_path(__FILE__) . 'includes/pdf-parser/alt_autoload.php';
405 + if (file_exists($autoload_path)) {
406 + require_once $autoload_path;
407 + return true;
408 + }
409 + return false;
410 +}
411 +
412 +/**
413 + * Create URL click tracking table
414 + */
415 +function mxchat_create_url_clicks_table() {
416 + global $wpdb;
417 +
418 + $table_name = $wpdb->prefix . 'mxchat_url_clicks';
419 +
420 + $charset_collate = $wpdb->get_charset_collate();
421 +
422 + $sql = "CREATE TABLE $table_name (
423 + id mediumint(9) NOT NULL AUTO_INCREMENT,
424 + session_id varchar(100) NOT NULL,
425 + clicked_url text NOT NULL,
426 + message_context text,
427 + click_timestamp datetime DEFAULT CURRENT_TIMESTAMP,
428 + user_ip varchar(45),
429 + user_agent text,
430 + PRIMARY KEY (id),
431 + KEY session_id (session_id),
432 + KEY click_timestamp (click_timestamp)
433 + ) $charset_collate;";
434 +
435 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
436 + dbDelta($sql);
437 +}
438 +
439 +/**
440 + * FIXED: Robust table creation and column management
441 + */
442 +function mxchat_create_chat_transcripts_table() {
443 + global $wpdb;
444 +
445 + $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
446 + $charset_collate = $wpdb->get_charset_collate();
447 +
448 + // Create table with ALL columns including user_name from the start
449 + $sql = "CREATE TABLE $table_name (
450 + id MEDIUMINT(9) NOT NULL AUTO_INCREMENT,
451 + user_id MEDIUMINT(9) DEFAULT 0,
452 + session_id VARCHAR(255) NOT NULL,
453 + role VARCHAR(255) NOT NULL,
454 + message TEXT NOT NULL,
455 + user_email VARCHAR(255) DEFAULT NULL,
456 + user_name VARCHAR(100) DEFAULT NULL,
457 + user_identifier VARCHAR(255) DEFAULT NULL,
458 + originating_page_url TEXT DEFAULT NULL,
459 + originating_page_title VARCHAR(500) DEFAULT NULL,
460 + timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
461 + PRIMARY KEY (id),
462 + KEY session_id (session_id),
463 + KEY user_email (user_email),
464 + KEY timestamp (timestamp)
465 + ) $charset_collate;";
466 +
467 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
468 + $result = dbDelta($sql);
469 +
470 + // Log the result for debugging
471 + if (empty($result)) {
472 + //error_log("MxChat: dbDelta returned empty result for chat transcripts table");
473 + } else {
474 + //error_log("MxChat: dbDelta result: " . print_r($result, true));
475 + }
476 +
477 + // IMPORTANT: Ensure all columns exist for existing installations
478 + mxchat_ensure_all_columns($table_name);
479 +}
480 +
481 +/**
482 + * Ensure all required columns exist (for upgrades)
483 + */
484 +function mxchat_ensure_all_columns($table_name) {
485 + global $wpdb;
486 +
487 + // First check if table exists
488 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
489 + if (!$table_exists) {
490 + //error_log("MxChat: Table $table_name does not exist, cannot add columns");
491 + return;
492 + }
493 +
494 + // Define all required columns and their types
495 + $required_columns = [
496 + 'user_identifier' => 'VARCHAR(255) DEFAULT NULL',
497 + 'user_email' => 'VARCHAR(255) DEFAULT NULL',
498 + 'user_name' => 'VARCHAR(100) DEFAULT NULL',
499 + 'originating_page_url' => 'TEXT DEFAULT NULL',
500 + 'originating_page_title' => 'VARCHAR(500) DEFAULT NULL',
501 + 'rag_context' => 'LONGTEXT DEFAULT NULL'
502 + ];
503 +
504 + // Get existing columns
505 + $existing_columns = $wpdb->get_results("SHOW COLUMNS FROM $table_name");
506 + if (empty($existing_columns)) {
507 + //error_log("MxChat: Could not get columns for table $table_name");
508 + return;
509 + }
510 +
511 + $existing_column_names = array_column($existing_columns, 'Field');
512 +
513 + // Add missing columns
514 + foreach ($required_columns as $column_name => $column_definition) {
515 + if (!in_array($column_name, $existing_column_names)) {
516 + $alter_sql = "ALTER TABLE $table_name ADD COLUMN $column_name $column_definition";
517 + $result = $wpdb->query($alter_sql);
518 +
519 + if ($result === false) {
520 + //error_log("MxChat: Failed to add column $column_name to $table_name. Error: " . $wpdb->last_error);
521 + } else {
522 + //error_log("MxChat: Successfully added column $column_name to $table_name");
523 + }
524 + }
525 + }
526 +}
527 +
528 +/**
529 + * Add role restriction column to knowledge base table
530 + */
531 +function mxchat_add_role_restriction_column() {
532 + global $wpdb;
533 + $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
534 +
535 + // Check if table exists first
536 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
537 + if (!$table_exists) {
538 + //error_log("MxChat: System prompt content table does not exist, cannot add role_restriction column");
539 + return;
540 + }
541 +
542 + // Check if column already exists
543 + $column_exists = $wpdb->get_results(
544 + $wpdb->prepare(
545 + "SHOW COLUMNS FROM {$table_name} LIKE %s",
546 + 'role_restriction'
547 + )
548 + );
549 +
550 + if (empty($column_exists)) {
551 + $alter_sql = "ALTER TABLE {$table_name} ADD COLUMN role_restriction VARCHAR(50) DEFAULT 'public' AFTER source_url";
552 + $result = $wpdb->query($alter_sql);
553 +
554 + if ($result === false) {
555 + //error_log("MxChat: Failed to add role_restriction column. Error: " . $wpdb->last_error);
556 + } else {
557 + //error_log("MxChat: Successfully added role_restriction column");
558 +
559 + // Set all existing records to 'public' (everyone can access)
560 + $update_result = $wpdb->query(
561 + "UPDATE {$table_name}
562 + SET role_restriction = 'public'
563 + WHERE role_restriction IS NULL OR role_restriction = ''"
564 + );
565 +
566 + if ($update_result !== false) {
567 + //error_log("MxChat: Updated {$update_result} existing records to public access");
568 + }
569 + }
570 + }
571 +}
572 +
573 +/**
574 + * Add enabled_bots column to intents table for multi-bot action filtering
575 + */
576 +function mxchat_add_enabled_bots_column() {
577 + global $wpdb;
578 + $table_name = $wpdb->prefix . 'mxchat_intents';
579 +
580 + // Check if table exists first
581 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
582 + if (!$table_exists) {
583 + //error_log("MxChat: Intents table does not exist, cannot add enabled_bots column");
584 + return;
585 + }
586 +
587 + // Check if column already exists
588 + $column_exists = $wpdb->get_results(
589 + $wpdb->prepare(
590 + "SHOW COLUMNS FROM {$table_name} LIKE %s",
591 + 'enabled_bots'
592 + )
593 + );
594 +
595 + if (empty($column_exists)) {
596 + $alter_sql = "ALTER TABLE {$table_name} ADD COLUMN enabled_bots LONGTEXT DEFAULT NULL AFTER enabled";
597 + $result = $wpdb->query($alter_sql);
598 +
599 + if ($result === false) {
600 + //error_log("MxChat: Failed to add enabled_bots column. Error: " . $wpdb->last_error);
601 + } else {
602 + //error_log("MxChat: Successfully added enabled_bots column");
603 +
604 + // Set all existing actions to work with 'default' bot for backward compatibility
605 + $default_bots = json_encode(['default']);
606 + $update_result = $wpdb->query(
607 + $wpdb->prepare(
608 + "UPDATE {$table_name}
609 + SET enabled_bots = %s
610 + WHERE enabled_bots IS NULL OR enabled_bots = ''",
611 + $default_bots
612 + )
613 + );
614 +
615 + if ($update_result !== false) {
616 + //error_log("MxChat: Updated {$update_result} existing actions to work with default bot");
617 + }
618 + }
619 + }
620 +}
621 +
622 +/**
623 + * Create Pinecone role restrictions table with multi-bot support
624 + */
625 +function mxchat_create_pinecone_roles_table() {
626 + global $wpdb;
627 +
628 + $table_name = $wpdb->prefix . 'mxchat_pinecone_roles';
629 + $charset_collate = $wpdb->get_charset_collate();
630 +
631 + $sql = "CREATE TABLE $table_name (
632 + id mediumint(9) NOT NULL AUTO_INCREMENT,
633 + vector_id varchar(255) NOT NULL,
634 + bot_id varchar(50) NOT NULL DEFAULT 'default',
635 + source_url text,
636 + role_restriction varchar(50) DEFAULT 'public',
637 + updated_at timestamp DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
638 + PRIMARY KEY (id),
639 + UNIQUE KEY vector_bot (vector_id, bot_id),
640 + KEY role_restriction (role_restriction),
641 + KEY bot_id (bot_id)
642 + ) $charset_collate;";
643 +
644 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
645 + dbDelta($sql);
646 +}
647 +
648 +/**
649 + * Add bot_id column to mxchat_pinecone_roles table for multi-bot support
650 + * This migration runs once to update existing installations
651 + */
652 +function mxchat_migrate_pinecone_roles_add_bot_id() {
653 + global $wpdb;
654 +
655 + // Check if migration already ran
656 + $migration_version = get_option('mxchat_pinecone_roles_migration_version', '0');
657 + if (version_compare($migration_version, '2.5.2', '>=')) {
658 + return; // Already migrated
659 + }
660 +
661 + $table_name = $wpdb->prefix . 'mxchat_pinecone_roles';
662 +
663 + // Check if table exists
664 + if ($wpdb->get_var("SHOW TABLES LIKE '{$table_name}'") != $table_name) {
665 + return; // Table doesn't exist yet
666 + }
667 +
668 + // Check if bot_id column already exists
669 + $column_exists = $wpdb->get_results("SHOW COLUMNS FROM {$table_name} LIKE 'bot_id'");
670 +
671 + if (empty($column_exists)) {
672 + // Add bot_id column
673 + $wpdb->query("ALTER TABLE {$table_name} ADD COLUMN bot_id VARCHAR(50) NOT NULL DEFAULT 'default' AFTER vector_id");
674 +
675 + // Update the unique key to include bot_id
676 + $wpdb->query("ALTER TABLE {$table_name} DROP INDEX vector_id");
677 + $wpdb->query("ALTER TABLE {$table_name} ADD UNIQUE KEY vector_bot (vector_id, bot_id)");
678 +
679 + // Add index for bot_id
680 + $wpdb->query("ALTER TABLE {$table_name} ADD KEY bot_id (bot_id)");
681 +
682 + //error_log('MxChat: Successfully added bot_id column to mxchat_pinecone_roles table');
683 + }
684 +
685 + // Mark migration as complete
686 + update_option('mxchat_pinecone_roles_migration_version', '2.5.2');
687 +}
688 +
689 +/**
690 + * 2.5.6: Add content_type column to mxchat_system_prompt_content table
691 + * Enables filtering knowledge base by content type (posts, pages, PDFs, etc.)
692 + */
693 +function mxchat_migrate_add_content_type_column() {
694 + global $wpdb;
695 +
696 + // Check if migration already ran
697 + $migration_version = get_option('mxchat_content_type_migration_version', '0');
698 + if (version_compare($migration_version, '2.5.6', '>=')) {
699 + return;
700 + }
701 +
702 + $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
703 +
704 + // Check if table exists
705 + if ($wpdb->get_var("SHOW TABLES LIKE '{$table_name}'") != $table_name) {
706 + return;
707 + }
708 +
709 + // Check if content_type column already exists
710 + $column_exists = $wpdb->get_results("SHOW COLUMNS FROM {$table_name} LIKE 'content_type'");
711 +
712 + if (empty($column_exists)) {
713 + // Add content_type column with default value 'content' for backwards compatibility
714 + $wpdb->query("ALTER TABLE {$table_name} ADD COLUMN content_type VARCHAR(50) DEFAULT 'content' AFTER role_restriction");
715 +
716 + // Add index for better query performance
717 + $wpdb->query("ALTER TABLE {$table_name} ADD KEY content_type (content_type)");
718 +
719 + //error_log('MxChat: Successfully added content_type column to mxchat_system_prompt_content table');
720 + }
721 +
722 + // Mark migration as complete
723 + update_option('mxchat_content_type_migration_version', '2.5.6');
724 +}
725 +
726 +/**
727 + * 3.2.4: Backfill the active embedding model option for installs that already
728 + * have KB content but no stamped model. The mismatch warning compares this
729 + * against the user's currently selected model — no per-row column needed.
730 + */
731 +function mxchat_backfill_active_embedding_model() {
732 + global $wpdb;
733 +
734 + if (get_option('mxchat_active_embedding_model', '') !== '') {
735 + return;
736 + }
737 +
738 + $kb_table = $wpdb->prefix . 'mxchat_system_prompt_content';
739 + if ($wpdb->get_var("SHOW TABLES LIKE '{$kb_table}'") !== $kb_table) {
740 + return;
741 + }
742 +
743 + $kb_count = (int) $wpdb->get_var("SELECT COUNT(*) FROM {$kb_table}");
744 + if ($kb_count > 0) {
745 + $options = get_option('mxchat_options', array());
746 + $current_model = $options['embedding_model'] ?? 'text-embedding-ada-002';
747 + update_option('mxchat_active_embedding_model', $current_model, false);
748 + }
749 +}
750 +
751 +/**
752 + * 2.5.2: Create queue processing tables for reliable background processing
753 + */
754 +function mxchat_create_queue_tables() {
755 + global $wpdb;
756 + $charset_collate = $wpdb->get_charset_collate();
757 +
758 + // Main queue table
759 + $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
760 + $sql_queue = "CREATE TABLE $queue_table (
761 + id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
762 + queue_id varchar(64) NOT NULL,
763 + item_type varchar(20) NOT NULL,
764 + item_data longtext NOT NULL,
765 + status varchar(20) NOT NULL DEFAULT 'pending',
766 + bot_id varchar(50) NOT NULL DEFAULT 'default',
767 + priority int(11) NOT NULL DEFAULT 0,
768 + attempts int(11) NOT NULL DEFAULT 0,
769 + max_attempts int(11) NOT NULL DEFAULT 3,
770 + error_message text DEFAULT NULL,
771 + created_at datetime NOT NULL,
772 + started_at datetime DEFAULT NULL,
773 + completed_at datetime DEFAULT NULL,
774 + PRIMARY KEY (id),
775 + KEY queue_id (queue_id),
776 + KEY status (status),
777 + KEY item_type (item_type),
778 + KEY priority (priority)
779 + ) $charset_collate;";
780 +
781 + // Queue metadata table
782 + $meta_table = $wpdb->prefix . 'mxchat_queue_meta';
783 + $sql_meta = "CREATE TABLE $meta_table (
784 + id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
785 + queue_id varchar(64) NOT NULL,
786 + meta_key varchar(255) NOT NULL,
787 + meta_value longtext,
788 + PRIMARY KEY (id),
789 + KEY queue_id (queue_id),
790 + KEY meta_key (meta_key)
791 + ) $charset_collate;";
792 +
793 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
794 + dbDelta($sql_queue);
795 + dbDelta($sql_meta);
796 +
797 + //error_log("MxChat: Queue tables created/updated successfully");
798 +}
799 +
800 +/**
801 + * Create transcript translations table for persisting translations
802 + */
803 +function mxchat_create_translations_table() {
804 + global $wpdb;
805 + $charset_collate = $wpdb->get_charset_collate();
806 +
807 + $table_name = $wpdb->prefix . 'mxchat_transcript_translations';
808 + $sql = "CREATE TABLE $table_name (
809 + id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
810 + session_id varchar(255) NOT NULL,
811 + language_code varchar(10) NOT NULL,
812 + translations longtext NOT NULL,
813 + created_at datetime NOT NULL,
814 + updated_at datetime NOT NULL,
815 + PRIMARY KEY (id),
816 + UNIQUE KEY session_lang (session_id, language_code),
817 + KEY session_id (session_id)
818 + ) $charset_collate;";
819 +
820 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
821 + dbDelta($sql);
822 +}
823 +
824 +/**
825 + * Create per-session satisfaction ratings table (v3.2.6)
826 + * Stores one 👍/👎 rating + optional feedback per chat session.
827 + */
828 +function mxchat_create_session_ratings_table() {
829 + global $wpdb;
830 + $charset_collate = $wpdb->get_charset_collate();
831 +
832 + $table_name = $wpdb->prefix . 'mxchat_session_ratings';
833 + $sql = "CREATE TABLE $table_name (
834 + id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
835 + session_id varchar(255) NOT NULL,
836 + bot_id varchar(50) NOT NULL DEFAULT 'default',
837 + rating_value tinyint(1) NOT NULL,
838 + rating_feedback text DEFAULT NULL,
839 + created_at datetime NOT NULL,
840 + PRIMARY KEY (id),
841 + UNIQUE KEY session_id (session_id),
842 + KEY bot_id (bot_id),
843 + KEY created_at (created_at)
844 + ) $charset_collate;";
845 +
846 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
847 + dbDelta($sql);
848 +}
849 +
850 +/**
851 + * 2.5.2: Fix URL column size to support long URLs (especially with UTF-8 encoding)
852 + * This fixes "url, source_url. The supplied values may be too long" errors
853 + */
854 +function mxchat_fix_url_column_size() {
855 + global $wpdb;
856 + $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
857 +
858 + // Check if table exists
859 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
860 + if (!$table_exists) {
861 + return;
862 + }
863 +
864 + // Change url and source_url from VARCHAR to TEXT to handle long URLs
865 + // This is especially important for URLs with UTF-8 encoded characters (Hebrew, Arabic, etc.)
866 + $wpdb->query("ALTER TABLE {$table_name} MODIFY COLUMN url TEXT");
867 + $wpdb->query("ALTER TABLE {$table_name} MODIFY COLUMN source_url TEXT");
868 +
869 + //error_log("MxChat: Successfully updated url and source_url columns to TEXT type for long URL support");
870 +}
871 +
872 +/**
873 + * Migrate deprecated AI models to their replacements
874 + * Version 2.5.1: Migrate Claude 3.5 Sonnet (deprecated) to Claude 3.7 Sonnet
875 + * Version 3.1.2: Convert chat transcripts table to utf8mb4 for emoji support
876 + * Without utf8mb4, any bot response containing emojis silently fails to insert.
877 + */
878 +function mxchat_migrate_transcripts_charset() {
879 + global $wpdb;
880 + $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
881 + $wpdb->query("ALTER TABLE $table_name CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci");
882 +}
883 +
884 +/**
885 + * Version 3.0.55: Migrate GPT-4 series models (deprecated 2026-02-17) to GPT-5 series
886 + */
887 +function mxchat_migrate_deprecated_models() {
888 + $options = get_option('mxchat_options', array());
889 + $migrated = false;
890 + $migration_message = '';
891 +
892 + if (!isset($options['model'])) {
893 + return;
894 + }
895 +
896 + $current_model = $options['model'];
897 +
898 + // Migrate deprecated Claude models to Claude Opus 4.6 (recommended replacement per Anthropic)
899 + $deprecated_claude_models = array(
900 + 'claude-3-5-sonnet-20240620', // Retired Oct 28, 2025
901 + 'claude-3-5-sonnet-20241022', // Retired Oct 28, 2025
902 + 'claude-3-7-sonnet-20250219', // Retiring Feb 19, 2026
903 + 'claude-3-opus-20240229', // Retired Jan 5, 2026
904 + 'claude-3-sonnet-20240229', // Legacy
905 + 'claude-3-haiku-20240307', // Legacy
906 + );
907 + if (in_array($current_model, $deprecated_claude_models, true)) {
908 + $options['model'] = 'claude-opus-4-6';
909 + $migrated = true;
910 + $migration_message = sprintf(
911 + 'Your chatbot model has been automatically updated from %s to Claude Opus 4.6 due to Anthropic deprecating older Claude models.',
912 + $current_model
913 + );
914 + }
915 +
916 + // Migrate deprecated Claude Haiku 3.5 to Claude Haiku 4.5
917 + if ($current_model === 'claude-3-5-haiku-20241022') {
918 + $options['model'] = 'claude-haiku-4-5-20251001';
919 + $migrated = true;
920 + $migration_message = 'Your chatbot model has been automatically updated from Claude Haiku 3.5 to Claude Haiku 4.5 due to Anthropic deprecating the older model.';
921 + }
922 +
923 + // Migrate deprecated GPT-4 series and GPT-3.5 Turbo to GPT-5.1 Chat Latest
924 + if (in_array($current_model, array('gpt-4o', 'gpt-4.1-2025-04-14', 'gpt-4-turbo', 'gpt-4', 'gpt-3.5-turbo'), true)) {
925 + $options['model'] = 'gpt-5.1-chat-latest';
926 + $migrated = true;
927 + $migration_message = sprintf(
928 + 'Your chatbot model has been automatically updated from %s to GPT-5.1 Chat Latest due to OpenAI deprecating older models.',
929 + $current_model
930 + );
931 + }
932 +
933 + // Migrate deprecated GPT-4o Mini and GPT-4.1 Mini to GPT-5 Mini
934 + if (in_array($current_model, array('gpt-4o-mini', 'gpt-4.1-mini'), true)) {
935 + $options['model'] = 'gpt-5-mini';
936 + $migrated = true;
937 + $migration_message = sprintf(
938 + 'Your chatbot model has been automatically updated from %s to GPT-5 Mini due to OpenAI deprecating GPT-4 series models.',
939 + $current_model
940 + );
941 + }
942 +
943 + if ($migrated) {
944 + update_option('mxchat_options', $options);
945 + update_option('mxchat_model_migrated_notice', true);
946 + update_option('mxchat_model_migration_message', $migration_message);
947 + }
948 +}
949 +
950 +/**
951 + * Show admin notice after model migration
952 + */
953 +function mxchat_show_migration_notice() {
954 + if (get_option('mxchat_model_migrated_notice')) {
955 + $migration_message = get_option('mxchat_model_migration_message', __('Your chatbot model has been automatically updated due to a model deprecation.', 'mxchat'));
956 + ?>
957 + <div class="notice notice-info is-dismissible">
958 + <p>
959 + <strong><?php esc_html_e('MxChat Model Updated', 'mxchat'); ?></strong><br>
960 + <?php echo esc_html($migration_message); ?>
961 + </p>
962 + </div>
963 + <?php
964 + delete_option('mxchat_model_migrated_notice');
965 + delete_option('mxchat_model_migration_message');
966 + }
967 +}
968 +
969 +function mxchat_activate() {
970 + global $wpdb;
971 + $charset_collate = $wpdb->get_charset_collate();
972 +
973 + //error_log("MxChat: Running activation function");
974 +
975 + // Create chat transcripts table with improved function
976 + mxchat_create_chat_transcripts_table();
977 +
978 + // System Prompt Content Table - UPDATED: Use TEXT for url and source_url columns
979 + $system_prompt_table = $wpdb->prefix . 'mxchat_system_prompt_content';
980 + $sql_system_prompt = "CREATE TABLE $system_prompt_table (
981 + id MEDIUMINT(9) NOT NULL AUTO_INCREMENT,
982 + url TEXT NOT NULL,
983 + article_content LONGTEXT NOT NULL,
984 + embedding_vector LONGTEXT,
985 + source_url TEXT DEFAULT NULL,
986 + role_restriction VARCHAR(50) DEFAULT 'public',
987 + content_type VARCHAR(50) DEFAULT 'content',
988 + timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
989 + PRIMARY KEY (id),
990 + KEY content_type (content_type)
991 + ) $charset_collate;";
992 +
993 + // Intents Table - NOW INCLUDES enabled_bots column from the start
994 + $intents_table = $wpdb->prefix . 'mxchat_intents';
995 + $sql_intents_table = "CREATE TABLE $intents_table (
996 + id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
997 + intent_label VARCHAR(255) NOT NULL,
998 + phrases TEXT NOT NULL,
999 + embedding_vector LONGTEXT NOT NULL,
1000 + callback_function VARCHAR(255) NOT NULL,
1001 + similarity_threshold FLOAT DEFAULT 0.85,
1002 + enabled TINYINT(1) NOT NULL DEFAULT 1,
1003 + enabled_bots LONGTEXT DEFAULT NULL,
1004 + PRIMARY KEY (id)
1005 + ) $charset_collate;";
1006 +
1007 + // Individual Intent Phrases Table - each phrase gets its own embedding vector
1008 + $intent_phrases_table = $wpdb->prefix . 'mxchat_intent_phrases';
1009 + $sql_intent_phrases_table = "CREATE TABLE $intent_phrases_table (
1010 + id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
1011 + intent_id BIGINT(20) UNSIGNED NOT NULL,
1012 + phrase TEXT NOT NULL,
1013 + embedding_vector LONGTEXT NOT NULL,
1014 + created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
1015 + PRIMARY KEY (id),
1016 + KEY intent_id (intent_id)
1017 + ) $charset_collate;";
1018 +
1019 + require_once ABSPATH . 'wp-admin/includes/upgrade.php';
1020 +
1021 + // Create other tables
1022 + dbDelta($sql_system_prompt);
1023 + dbDelta($sql_intents_table);
1024 + dbDelta($sql_intent_phrases_table);
1025 +
1026 + // Create URL click tracking table
1027 + mxchat_create_url_clicks_table();
1028 +
1029 + // Create Pinecone roles table
1030 + mxchat_create_pinecone_roles_table();
1031 +
1032 + // NEW 2.5.2: Create queue processing tables
1033 + mxchat_create_queue_tables();
1034 +
1035 + // Create transcript translations table
1036 + mxchat_create_translations_table();
1037 +
1038 + // Create per-session satisfaction ratings table (v3.2.6)
1039 + mxchat_create_session_ratings_table();
1040 +
1041 + // Ensure additional columns in system prompt table
1042 + $existing_system_columns = $wpdb->get_results("SHOW COLUMNS FROM $system_prompt_table");
1043 + if (!empty($existing_system_columns)) {
1044 + $existing_system_column_names = array_column($existing_system_columns, 'Field');
1045 +
1046 + if (!in_array('embedding_vector', $existing_system_column_names)) {
1047 + $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN embedding_vector LONGTEXT");
1048 + }
1049 + if (!in_array('source_url', $existing_system_column_names)) {
1050 + $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN source_url TEXT DEFAULT NULL");
1051 + }
1052 + if (!in_array('role_restriction', $existing_system_column_names)) {
1053 + $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN role_restriction VARCHAR(50) DEFAULT 'public' AFTER source_url");
1054 + }
1055 + }
1056 +
1057 + // Set default thresholds for existing intents
1058 + $wpdb->query("UPDATE {$intents_table} SET similarity_threshold = 0.85 WHERE similarity_threshold IS NULL");
1059 +
1060 + // Ensure enabled column exists in intents table
1061 + $existing_intent_columns = $wpdb->get_results("SHOW COLUMNS FROM $intents_table");
1062 + if (!empty($existing_intent_columns)) {
1063 + $existing_intent_column_names = array_column($existing_intent_columns, 'Field');
1064 +
1065 + if (!in_array('enabled', $existing_intent_column_names)) {
1066 + $wpdb->query("ALTER TABLE $intents_table ADD COLUMN enabled TINYINT(1) NOT NULL DEFAULT 1");
1067 + }
1068 +
1069 + // Ensure enabled_bots column exists for existing installations
1070 + if (!in_array('enabled_bots', $existing_intent_column_names)) {
1071 + $wpdb->query("ALTER TABLE $intents_table ADD COLUMN enabled_bots LONGTEXT DEFAULT NULL AFTER enabled");
1072 +
1073 + // Set existing actions to work with default bot
1074 + $default_bots = json_encode(['default']);
1075 + $wpdb->query($wpdb->prepare(
1076 + "UPDATE {$intents_table} SET enabled_bots = %s WHERE enabled_bots IS NULL",
1077 + $default_bots
1078 + ));
1079 + }
1080 + }
1081 +
1082 + // Run migration for existing installations
1083 + mxchat_migrate_pinecone_roles_add_bot_id();
1084 +
1085 + // 3.2.4: Backfill active embedding model option (replaces 3.2.3 column-based tracking)
1086 + mxchat_backfill_active_embedding_model();
1087 +
1088 + // Setup cron jobs
1089 + mxchat_setup_cron_jobs();
1090 +
1091 + // Update version
1092 + update_option('mxchat_plugin_version', MXCHAT_VERSION);
1093 +
1094 + //error_log("MxChat: Activation function completed");
1095 +}
1096 +
1097 +/**
1098 + * Setup cron jobs on plugin activation
1099 + */
1100 +function mxchat_setup_cron_jobs() {
1101 + // Clear any existing cron jobs first
1102 + wp_clear_scheduled_hook('mxchat_reset_rate_limits');
1103 +
1104 + // Check if WordPress cron is disabled
1105 + if (defined('DISABLE_WP_CRON') && DISABLE_WP_CRON) {
1106 + // Set flag to use fallback system
1107 + update_option('mxchat_use_fallback_rate_limits', true);
1108 + update_option('mxchat_next_rate_limit_check', time() + 3600);
1109 + return;
1110 + }
1111 +
1112 + // Schedule the rate limit reset cron job
1113 + $result = wp_schedule_event(time() + 300, 'hourly', 'mxchat_reset_rate_limits');
1114 +
1115 + if ($result === false) {
1116 + // Fallback if scheduling fails
1117 + update_option('mxchat_use_fallback_rate_limits', true);
1118 + update_option('mxchat_next_rate_limit_check', time() + 3600);
1119 + } else {
1120 + // Clear fallback flags if cron scheduling succeeded
1121 + delete_option('mxchat_use_fallback_rate_limits');
1122 + }
1123 +
1124 + // Schedule transcript cleanup if configured (bucket dropdown OR custom retention-days > 0)
1125 + $transcript_options = get_option('mxchat_transcripts_options', array());
1126 + $cleanup_interval = isset($transcript_options['mxchat_auto_delete_transcripts']) ? $transcript_options['mxchat_auto_delete_transcripts'] : 'never';
1127 + $custom_retention = isset($transcript_options['mxchat_retention_days']) ? (int) $transcript_options['mxchat_retention_days'] : 0;
1128 +
1129 + if ($cleanup_interval !== 'never' || $custom_retention > 0) {
1130 + // Check if not already scheduled
1131 + if (!wp_next_scheduled('mxchat_cleanup_old_transcripts')) {
1132 + // Schedule to run daily at 3 AM
1133 + $next_run = strtotime('tomorrow 3:00 AM');
1134 + wp_schedule_event($next_run, 'daily', 'mxchat_cleanup_old_transcripts');
1135 + }
1136 + }
1137 +}
1138 +
1139 +/**
1140 + * Clean up on plugin deactivation
1141 + */
1142 +function mxchat_deactivate() {
1143 + // Clear scheduled cron jobs
1144 + wp_clear_scheduled_hook('mxchat_reset_rate_limits');
1145 + wp_clear_scheduled_hook('mxchat_cleanup_old_transcripts');
1146 + wp_clear_scheduled_hook('mxchat_send_delayed_transcript');
1147 +
1148 + // Clear fallback options
1149 + delete_option('mxchat_use_fallback_rate_limits');
1150 + delete_option('mxchat_next_rate_limit_check');
1151 + delete_option('mxchat_fallback_check_interval');
1152 +
1153 + // NOTE: We do NOT delete queue tables on deactivation
1154 + // This preserves data if user accidentally deactivates the plugin
1155 +}
1156 +
1157 +/**
1158 + * Check if fallback rate limit cleanup is needed
1159 + */
1160 +function mxchat_check_fallback_rate_limits() {
1161 + $use_fallback = get_option('mxchat_use_fallback_rate_limits', false);
1162 +
1163 + if (!$use_fallback) {
1164 + return;
1165 + }
1166 +
1167 + $next_check = get_option('mxchat_next_rate_limit_check', 0);
1168 +
1169 + if (time() >= $next_check) {
1170 + // Only run reset if the MxChat_Integrator class exists
1171 + if (class_exists('MxChat_Integrator')) {
1172 + $integrator = new MxChat_Integrator();
1173 + if (method_exists($integrator, 'mxchat_reset_rate_limits')) {
1174 + $integrator->mxchat_reset_rate_limits();
1175 + update_option('mxchat_next_rate_limit_check', time() + 3600);
1176 + }
1177 + }
1178 + }
1179 +}
1180 +
1181 +/**
1182 + * Robust update checking with role restriction migration, model deprecation, and queue tables
1183 + * CRITICAL: This runs on EVERY page load to ensure tables exist
1184 + */
1185 +function mxchat_check_for_update() {
1186 + global $wpdb;
1187 +
1188 + try {
1189 + $current_version = get_option('mxchat_plugin_version', '0.0.0');
1190 + $plugin_version = MXCHAT_VERSION;
1191 +
1192 + // Always ensure critical tables exist (even if version matches)
1193 + // This handles manual table deletion or fresh installs
1194 + $chat_table = $wpdb->prefix . 'mxchat_chat_transcripts';
1195 + $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
1196 +
1197 + $chat_exists = $wpdb->get_var("SHOW TABLES LIKE '$chat_table'") === $chat_table;
1198 + $queue_exists = $wpdb->get_var("SHOW TABLES LIKE '$queue_table'") === $queue_table;
1199 +
1200 + if (!$chat_exists || !$queue_exists) {
1201 + //error_log("MxChat: Critical tables missing, running activation");
1202 + mxchat_activate();
1203 + }
1204 +
1205 + // Version-specific migrations
1206 + if ($current_version !== $plugin_version) {
1207 + //error_log("MxChat: Version change detected: $current_version -> $plugin_version");
1208 +
1209 + // Run live agent update BEFORE updating the stored version
1210 + mxchat_handle_live_agent_update();
1211 +
1212 + // Run theme migration notice for 3.0.1 (AI theme CSS structure changes)
1213 + mxchat_handle_theme_migration_notice();
1214 +
1215 + // Run role restriction migration for 2.4.1
1216 + if (version_compare($current_version, '2.4.1', '<')) {
1217 + mxchat_add_role_restriction_column();
1218 + }
1219 +
1220 + // Run enabled_bots column migration for 2.4.4
1221 + if (version_compare($current_version, '2.4.4', '<')) {
1222 + mxchat_add_enabled_bots_column();
1223 + }
1224 +
1225 + // Run model migration for 2.5.1 (Claude deprecation)
1226 + if (version_compare($current_version, '2.5.1', '<')) {
1227 + mxchat_migrate_deprecated_models();
1228 + }
1229 +
1230 + // 2.5.2: Ensure queue tables exist and fix URL column sizes for all users upgrading to 2.5.2
1231 + if (version_compare($current_version, '2.5.2', '<')) {
1232 + mxchat_create_queue_tables();
1233 + mxchat_fix_url_column_size(); // NEW: Fix URL column size for long URLs
1234 + //error_log("MxChat: Queue tables created and URL columns updated for upgrade to 2.5.2");
1235 + }
1236 +
1237 + // 2.6.0: Ensure rag_context column exists for retrieved documents feature
1238 + if (version_compare($current_version, '2.6.0', '<')) {
1239 + $chat_table = $wpdb->prefix . 'mxchat_chat_transcripts';
1240 + mxchat_ensure_all_columns($chat_table);
1241 + //error_log("MxChat: rag_context column migration for 2.6.0");
1242 + }
1243 +
1244 + // 3.0.5: Migrate deprecated Gemini embedding model
1245 + if (version_compare($current_version, '3.0.5', '<')) {
1246 + mxchat_migrate_gemini_embedding_model();
1247 + }
1248 +
1249 + // 3.0.6: Migrate deprecated OpenAI and Claude models
1250 + if (version_compare($current_version, '3.0.6', '<')) {
1251 + mxchat_migrate_deprecated_models();
1252 + }
1253 +
1254 + // 3.1.2: Convert chat transcripts table to utf8mb4 for emoji support
1255 + if (version_compare($current_version, '3.1.2', '<')) {
1256 + mxchat_migrate_transcripts_charset();
1257 + }
1258 +
1259 + // 3.1.7: Clean up stale shared session email/name entries
1260 + if (version_compare($current_version, '3.1.7', '<')) {
1261 + delete_option('mxchat_email_null');
1262 + delete_option('mxchat_name_null');
1263 + }
1264 +
1265 + // 3.2.4: Backfill active embedding model option for the warning UI
1266 + // (replaces the per-row column tracking from 3.2.3, which was reverted)
1267 + if (version_compare($current_version, '3.2.4', '<')) {
1268 + mxchat_backfill_active_embedding_model();
1269 + }
1270 +
1271 + // Run full activation to ensure everything is up to date
1272 + mxchat_activate();
1273 +
1274 + // Run migration functions
1275 + mxchat_migrate_live_agent_status();
1276 +
1277 + // Add the cleanup function for version 2.1.8
1278 + if (version_compare($current_version, '2.1.8', '<')) {
1279 + $deleted = mxchat_cleanup_orphaned_chat_history();
1280 + }
1281 +
1282 + // Update version LAST
1283 + update_option('mxchat_plugin_version', $plugin_version);
1284 +
1285 + //error_log("MxChat: Updated from version $current_version to $plugin_version");
1286 + }
1287 +
1288 + } catch (Exception $e) {
1289 + //error_log('MxChat update error: ' . $e->getMessage());
1290 + // Don't update version if there was an error
1291 + }
1292 +}
1293 +
1294 +/**
1295 + * Ensure tables exist on every admin load for fresh installations
1296 + * This is a safety net for cases where activation hook doesn't fire
1297 + */
1298 +function mxchat_ensure_tables_exist() {
1299 + global $wpdb;
1300 +
1301 + // Only run for admin users to avoid performance impact
1302 + if (!current_user_can('administrator')) {
1303 + return;
1304 + }
1305 +
1306 + // Check if we've already verified tables in this session
1307 + static $tables_checked = false;
1308 + if ($tables_checked) {
1309 + return;
1310 + }
1311 + $tables_checked = true;
1312 +
1313 + $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
1314 + $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
1315 +
1316 + $chat_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
1317 + $queue_exists = $wpdb->get_var("SHOW TABLES LIKE '$queue_table'") === $queue_table;
1318 +
1319 + if (!$chat_exists || !$queue_exists) {
1320 + //error_log("MxChat: Tables missing on admin load, running activation");
1321 + mxchat_activate();
1322 + }
1323 +}
1324 +
1325 +/**
1326 + * Clean up orphaned chat history options from the wp_options table
1327 + * @return int Number of options deleted
1328 + */
1329 +function mxchat_cleanup_orphaned_chat_history() {
1330 + global $wpdb;
1331 + $count = 0;
1332 +
1333 + // Get all option keys that match our pattern
1334 + $history_options = $wpdb->get_results(
1335 + "SELECT option_name FROM {$wpdb->options}
1336 + WHERE option_name LIKE 'mxchat_history_%'"
1337 + );
1338 +
1339 + if (!empty($history_options)) {
1340 + foreach ($history_options as $option) {
1341 + // Extract the session ID from the option name
1342 + $session_id = str_replace('mxchat_history_', '', $option->option_name);
1343 +
1344 + // Check if this session still exists in the custom table
1345 + $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
1346 + $exists = $wpdb->get_var(
1347 + $wpdb->prepare(
1348 + "SELECT COUNT(*) FROM {$table_name} WHERE session_id = %s",
1349 + $session_id
1350 + )
1351 + );
1352 +
1353 + // If session doesn't exist in the main table, delete the option
1354 + if ($exists == 0) {
1355 + delete_option($option->option_name);
1356 + // Also delete related metadata
1357 + delete_option("mxchat_email_{$session_id}");
1358 + delete_option("mxchat_name_{$session_id}");
1359 + delete_option("mxchat_agent_name_{$session_id}");
1360 + $count++;
1361 + }
1362 + }
1363 + }
1364 +
1365 + return $count;
1366 +}
1367 +
1368 +function mxchat_migrate_live_agent_status() {
1369 + $options = get_option('mxchat_options', []);
1370 +
1371 + // Check if live_agent_status exists
1372 + if (isset($options['live_agent_status'])) {
1373 + $current_status = $options['live_agent_status'];
1374 + $needs_update = false;
1375 +
1376 + // Convert to new format if needed
1377 + if ($current_status === 'online') {
1378 + $options['live_agent_status'] = 'on';
1379 + $needs_update = true;
1380 + } else if ($current_status === 'offline') {
1381 + $options['live_agent_status'] = 'off';
1382 + $needs_update = true;
1383 + } else if (!in_array($current_status, ['on', 'off'])) {
1384 + // Default to off for any unexpected values
1385 + $options['live_agent_status'] = 'off';
1386 + $needs_update = true;
1387 + }
1388 +
1389 + // Only update if needed
1390 + if ($needs_update) {
1391 + update_option('mxchat_options', $options);
1392 + }
1393 + } else {
1394 + // If status doesn't exist, set default to off
1395 + $options['live_agent_status'] = 'off';
1396 + update_option('mxchat_options', $options);
1397 + }
1398 +}
1399 +
1400 +function mxchat_handle_live_agent_update() {
1401 + // Get the CURRENT stored version (before it gets updated)
1402 + $current_version = get_option('mxchat_plugin_version', '0.0.0');
1403 + $new_version = '2.2.2';
1404 +
1405 + // Only run this once for the update to 2.2.2
1406 + $update_handled = get_option('mxchat_live_agent_update_2_2_2_handled', false);
1407 +
1408 + // Check if we're upgrading TO 2.2.2 and haven't handled this yet
1409 + if (version_compare($current_version, $new_version, '<') && !$update_handled) {
1410 + $options = get_option('mxchat_options', array());
1411 +
1412 + // Check if live agent was previously enabled
1413 + if (isset($options['live_agent_status']) && $options['live_agent_status'] === 'on') {
1414 + // Disable live agent
1415 + $options['live_agent_status'] = 'off';
1416 + update_option('mxchat_options', $options);
1417 +
1418 + // Set flag to show the notification banner
1419 + update_option('mxchat_show_live_agent_disabled_notice', true);
1420 + }
1421 +
1422 + // Mark this update as handled
1423 + update_option('mxchat_live_agent_update_2_2_2_handled', true);
1424 + }
1425 +}
1426 +
1427 +/**
1428 + * Handle theme migration notice for version 3.0.1
1429 + * Shows a dismissible notice to Pro users about migrating AI-generated themes
1430 + */
1431 +function mxchat_handle_theme_migration_notice() {
1432 + // Get the CURRENT stored version (before it gets updated)
1433 + $current_version = get_option('mxchat_plugin_version', '0.0.0');
1434 + $target_version = '3.0.1';
1435 +
1436 + // Only run this once for the update to 3.0.1
1437 + $update_handled = get_option('mxchat_theme_migration_update_3_0_1_handled', false);
1438 +
1439 + // Check if we're upgrading TO 3.0.1 and haven't handled this yet
1440 + if (version_compare($current_version, $target_version, '<') && !$update_handled) {
1441 + // Check if Pro is activated - only show to Pro users
1442 + $license_status = get_option('mxchat_license_status', 'inactive');
1443 + $is_pro = ($license_status === 'active');
1444 +
1445 + if ($is_pro) {
1446 + // Set flag to show the theme migration notification banner
1447 + update_option('mxchat_show_theme_migration_notice', true);
1448 + }
1449 +
1450 + // Mark this update as handled (whether Pro or not)
1451 + update_option('mxchat_theme_migration_update_3_0_1_handled', true);
1452 + }
1453 +}
1454 +
1455 +// Initialize plugin safely
1456 +function mxchat_init() {
1457 + // Include all class files first
1458 + mxchat_include_classes();
1459 +
1460 + // Run update check (this also ensures tables exist)
1461 + mxchat_check_for_update();
1462 +
1463 + // CRITICAL: Ensure tables exist on admin pages (safety net)
1464 + add_action('admin_init', 'mxchat_ensure_tables_exist', 1);
1465 +
1466 + // Add fallback rate limit check
1467 + add_action('init', 'mxchat_check_fallback_rate_limits', 5);
1468 +
1469 + // Add migration notice hook
1470 + add_action('admin_notices', 'mxchat_show_migration_notice');
1471 +
1472 + // Initialize classes with error handling
1473 + try {
1474 + // Initialize admin classes
1475 + if (is_admin()) {
1476 + if (class_exists('MxChat_Knowledge_Manager')) {
1477 + $mxchat_knowledge_manager = new MxChat_Knowledge_Manager();
1478 +
1479 + if (class_exists('MxChat_Admin')) {
1480 + $mxchat_admin = new MxChat_Admin($mxchat_knowledge_manager);
1481 + }
1482 + }
1483 +
1484 + // Initialize meta box class
1485 + if (class_exists('MxChat_Meta_Box')) {
1486 + new MxChat_Meta_Box();
1487 + }
1488 +
1489 + }
1490 +
1491 + // Initialize content generator globally — it registers wp_head hook
1492 + // for frontend CSS injection, plus wp_ajax_ hooks for admin.
1493 + if (class_exists('MxChat_Content_Generator')) {
1494 + new MxChat_Content_Generator();
1495 + }
1496 +
1497 + // Initialize REST API globally — endpoints must be registered on
1498 + // every request (admin and frontend) so they're reachable via /wp-json/.
1499 + // Endpoints are auth-gated and locked until the site owner generates
1500 + // a token in MxChat → API Access.
1501 + if (class_exists('MxChat_Rest_Api')) {
1502 + new MxChat_Rest_Api();
1503 + }
1504 +
1505 + // Initialize public classes
1506 + if (class_exists('MxChat_Public')) {
1507 + $mxchat_public = new MxChat_Public();
1508 + }
1509 +
1510 + if (class_exists('MxChat_Integrator')) {
1511 + global $mxchat_integrator;
1512 + $mxchat_integrator = new MxChat_Integrator();
1513 + }
1514 +
1515 + } catch (Exception $e) {
1516 + //error_log('MxChat initialization error: ' . $e->getMessage());
1517 +
1518 + // Show admin notice if there's an error
1519 + if (is_admin()) {
1520 + add_action('admin_notices', function() use ($e) {
1521 + echo '<div class="notice notice-error"><p>';
1522 + echo '<strong>MxChat Error:</strong> Plugin initialization failed. ';
1523 + echo 'Please check error logs or contact support. Error: ' . esc_html($e->getMessage());
1524 + echo '</p></div>';
1525 + });
1526 + }
1527 + }
1528 +}
1529 +
1530 +// Run initialization on plugins_loaded
1531 +add_action('plugins_loaded', 'mxchat_init');
1532 +
1533 +// Run migration check on admin init (for auto-updates without reactivation)
1534 +add_action('admin_init', 'mxchat_check_and_run_migrations');
1535 +
1536 +/**
1537 + * Check and run migrations on admin init
1538 + * This ensures migrations run even when plugin is auto-updated
1539 + */
1540 +function mxchat_check_and_run_migrations() {
1541 + // Only run in admin and not on every request
1542 + static $checked = false;
1543 + if ($checked) {
1544 + return;
1545 + }
1546 + $checked = true;
1547 +
1548 + mxchat_migrate_pinecone_roles_add_bot_id();
1549 + mxchat_migrate_add_content_type_column();
1550 + mxchat_migrate_add_translations_table();
1551 + mxchat_migrate_add_session_ratings_table();
1552 +}
1553 +
1554 +/**
1555 + * Migration: Create per-session satisfaction ratings table (v3.2.6)
1556 + * For users upgrading from versions before 3.2.6
1557 + */
1558 +function mxchat_migrate_add_session_ratings_table() {
1559 + $migration_key = 'mxchat_session_ratings_table_created';
1560 + if (get_option($migration_key)) {
1561 + return;
1562 + }
1563 + mxchat_create_session_ratings_table();
1564 + update_option($migration_key, '3.2.6');
1565 +}
1566 +
1567 +/**
1568 + * Migration: Create transcript translations table (v3.0.4)
1569 + * For users upgrading from versions before 3.0.4
1570 + */
1571 +function mxchat_migrate_add_translations_table() {
1572 + $migration_key = 'mxchat_translations_table_created';
1573 +
1574 + // Check if migration already ran
1575 + if (get_option($migration_key)) {
1576 + return;
1577 + }
1578 +
1579 + // Create the translations table
1580 + mxchat_create_translations_table();
1581 +
1582 + // Mark migration as complete
1583 + update_option($migration_key, '3.0.4');
1584 +}
1585 +
1586 +/**
1587 + * Migration: Update deprecated Gemini embedding model (v3.0.5)
1588 + * Updates gemini-embedding-exp-03-07 to gemini-embedding-001 for users who had it selected
1589 + */
1590 +function mxchat_migrate_gemini_embedding_model() {
1591 + $options = get_option('mxchat_options', array());
1592 +
1593 + if (isset($options['embedding_model']) && $options['embedding_model'] === 'gemini-embedding-exp-03-07') {
1594 + $options['embedding_model'] = 'gemini-embedding-001';
1595 + update_option('mxchat_options', $options);
1596 + }
1597 +}
1598 +
1599 +// Register activation hook
1600 +register_activation_hook(__FILE__, 'mxchat_activate');
1601 +
1602 +// Add cron schedule
1603 +add_filter('cron_schedules', function($schedules) {
1604 + $schedules['one_minute'] = array(
1605 + 'interval' => 60,
1606 + 'display' => 'Every Minute'
1607 + );
1608 + return $schedules;
1609 +});
1610 +
1611 +// Register deactivation hook
1612 +register_deactivation_hook(__FILE__, 'mxchat_deactivate');
1613 +
1614 +/**
1615 + * Per-session satisfaction rating: AJAX save handler (v3.2.6).
1616 + * Records one 👍/👎 + optional feedback per chat session. The UNIQUE KEY on
1617 + * session_id makes this naturally idempotent — only the first rating per
1618 + * session is stored; duplicate POSTs are silent no-ops.
1619 + */
1620 +function mxchat_save_session_rating() {
1621 + global $wpdb;
1622 +
1623 + $session_id = isset($_POST['session_id']) ? sanitize_text_field(wp_unslash($_POST['session_id'])) : '';
1624 + $bot_id = isset($_POST['bot_id']) ? sanitize_text_field(wp_unslash($_POST['bot_id'])) : 'default';
1625 + $rating_raw = isset($_POST['rating']) ? (int) $_POST['rating'] : 0;
1626 + $feedback = isset($_POST['feedback']) ? sanitize_textarea_field(wp_unslash($_POST['feedback'])) : '';
1627 +
1628 + if ($session_id === '' || ($rating_raw !== 1 && $rating_raw !== -1)) {
1629 + wp_send_json_error(array('message' => 'invalid_input'), 400);
1630 + }
1631 +
1632 + if (strlen($feedback) > 1000) {
1633 + $feedback = substr($feedback, 0, 1000);
1634 + }
1635 +
1636 + $table_name = $wpdb->prefix . 'mxchat_session_ratings';
1637 + $existing = $wpdb->get_var($wpdb->prepare(
1638 + "SELECT id FROM $table_name WHERE session_id = %s LIMIT 1",
1639 + $session_id
1640 + ));
1641 +
1642 + if ($existing) {
1643 + if ($feedback !== '') {
1644 + $wpdb->update(
1645 + $table_name,
1646 + array('rating_feedback' => $feedback),
1647 + array('id' => (int) $existing),
1648 + array('%s'),
1649 + array('%d')
1650 + );
1651 + }
1652 + wp_send_json_success(array('updated' => true));
1653 + }
1654 +
1655 + $inserted = $wpdb->insert(
1656 + $table_name,
1657 + array(
1658 + 'session_id' => $session_id,
1659 + 'bot_id' => $bot_id !== '' ? $bot_id : 'default',
1660 + 'rating_value' => $rating_raw,
1661 + 'rating_feedback' => $feedback !== '' ? $feedback : null,
1662 + 'created_at' => current_time('mysql'),
1663 + ),
1664 + array('%s', '%s', '%d', '%s', '%s')
1665 + );
1666 +
1667 + if ($inserted === false) {
1668 + wp_send_json_error(array('message' => 'db_insert_failed'), 500);
1669 + }
1670 +
1671 + wp_send_json_success(array('saved' => true));
1672 +}
1673 +add_action('wp_ajax_mxchat_save_rating', 'mxchat_save_session_rating');
1674 +add_action('wp_ajax_nopriv_mxchat_save_rating', 'mxchat_save_session_rating');