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MxChat – AI Chatbot & Content Generation for WordPress / 2.4.9
MxChat – AI Chatbot & Content Generation for WordPress v2.4.9
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← All changes | mxchat-basic.php +703 -2088 3.2.19 → 2.4.9 View file →
@@ -1,2088 +1,703 @@
1 -<?php
2 -/**
3 - * Plugin Name: MxChat
4 - * Plugin URI: https://mxchat.ai/
5 - * Description: AI chatbot for WordPress with OpenAI, Claude, xAI, DeepSeek, live agent, PDF uploads, WooCommerce, and training on website data.
6 - * Version: 3.2.19
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 - // MXCHAT_BASE_VERSION: the plain header version, stable across requests even in
28 - // dev mode. Use it for anything PERSISTED or COMPARED (the stored
29 - // mxchat_plugin_version option and the migration gate in
30 - // mxchat_check_for_update). MXCHAT_VERSION keeps the time() suffix in dev for
31 - // ASSET cache-busting only — persisting the suffixed value made the version
32 - // comparison churn every request, re-running the full activation/migration
33 - // suite per page load on dev installs.
34 - define('MXCHAT_BASE_VERSION', $version);
35 - if (MXCHAT_DEV_MODE) {
36 - $version .= '.' . time();
37 - }
38 - define('MXCHAT_VERSION', $version);
39 -}
40 -
41 -/**
42 - * Default confidence floor for the in-chat YouTube card, as a percentage
43 - * (plan-mxchat-20260813-f52492). Higher than the site-wide Similarity
44 - * Threshold default of 35 by design — see MxChat_Utils::video_embed_threshold().
45 - * Declared here so the gate, the admin field and the tests all read ONE number.
46 - */
47 -if (!defined('MXCHAT_VIDEO_EMBED_THRESHOLD_DEFAULT')) {
48 - define('MXCHAT_VIDEO_EMBED_THRESHOLD_DEFAULT', 55);
49 -}
50 -
51 -/**
52 - * Honest, versioned User-Agent for MXChat remote-content ingestion fetches
53 - * (Knowledge Base PDF import, URL import, sitemap / website crawl).
54 - *
55 - * WAF rulesets (SiteGround/ModSecurity, Wordfence, Cloudflare managed rules)
56 - * flag stale spoofed-browser UAs as scrapers and return 403 — which silently
57 - * broke the single most common KB source: self-hosted media on the site's own
58 - * domain. A truthful crawler identifier is the industry norm for well-behaved
59 - * bots and lets a site owner allowlist "MXChatBot" in their WAF. Filterable so
60 - * a locked-down host can supply a different string without a code change.
61 - */
62 -if (!function_exists('mxchat_ingest_user_agent')) {
63 - function mxchat_ingest_user_agent() {
64 - $version = defined('MXCHAT_VERSION') ? MXCHAT_VERSION : '1.0';
65 - $ua = 'MXChatBot/' . $version . ' (+https://mxchat.ai/bot)';
66 - return apply_filters('mxchat_ingest_user_agent', $ua);
67 - }
68 -}
69 -
70 -function mxchat_load_textdomain() {
71 - $domain = 'mxchat';
72 - $locale = determine_locale();
73 -
74 - // First, try to load from /wp-content/languages/plugins/ (preserved during updates)
75 - $mo_file = WP_LANG_DIR . '/plugins/' . $domain . '-' . $locale . '.mo';
76 - if (file_exists($mo_file)) {
77 - load_textdomain($domain, $mo_file);
78 - return;
79 - }
80 -
81 - // Fallback to plugin's /languages directory
82 - load_plugin_textdomain($domain, false, dirname(plugin_basename(__FILE__)) . '/languages');
83 -}
84 -add_action('init', 'mxchat_load_textdomain');
85 -
86 -/**
87 - * One-time migration: gemini-3-pro-preview was shut down by Google on March 9, 2026.
88 - * Existing installs with the dead ID get auto-remapped to gemini-3.1-pro-preview
89 - * (Google's official migration target) the first time admin_init fires after update.
90 - */
91 -add_action('admin_init', function () {
92 - if (get_option('mxchat_gemini_3_remap_done')) {
93 - return;
94 - }
95 - $opts = get_option('mxchat_options');
96 - if (is_array($opts) && isset($opts['model']) && $opts['model'] === 'gemini-3-pro-preview') {
97 - $opts['model'] = 'gemini-3.1-pro-preview';
98 - update_option('mxchat_options', $opts);
99 - }
100 - if (is_array($opts) && isset($opts['content_model']) && $opts['content_model'] === 'gemini-3-pro-preview') {
101 - $opts['content_model'] = 'gemini-3.1-pro-preview';
102 - update_option('mxchat_options', $opts);
103 - }
104 - update_option('mxchat_gemini_3_remap_done', 1);
105 -});
106 -
107 -/**
108 - * One-time migration: the Grok 2 family was retired by xAI (grok-2, grok-2-1212,
109 - * grok-2-latest, grok-2-vision-1212 all return 400 "Model not found"). Existing
110 - * installs with the dead ID get auto-remapped to grok-4-1-fast-non-reasoning
111 - * (modern, fast, broadly available) the first time admin_init fires after update.
112 - */
113 -add_action('admin_init', function () {
114 - if (get_option('mxchat_grok_2_remap_done')) {
115 - return;
116 - }
117 - $opts = get_option('mxchat_options');
118 - if (is_array($opts) && isset($opts['model']) && $opts['model'] === 'grok-2') {
119 - $opts['model'] = 'grok-4-1-fast-non-reasoning';
120 - update_option('mxchat_options', $opts);
121 - }
122 - if (is_array($opts) && isset($opts['content_model']) && $opts['content_model'] === 'grok-2') {
123 - $opts['content_model'] = 'grok-4-1-fast-non-reasoning';
124 - update_option('mxchat_options', $opts);
125 - }
126 - update_option('mxchat_grok_2_remap_done', 1);
127 -});
128 -
129 -/**
130 - * One-time migration: Anthropic retired the Claude 4 (2025-05-14) snapshots on
131 - * June 15, 2026 — claude-opus-4-20250514 and claude-sonnet-4-20250514 now return
132 - * an API error. Existing installs with a dead ID get auto-remapped to the current
133 - * equivalents Anthropic recommends (Opus 4.8 / Sonnet 4.6) the first time admin_init
134 - * fires after update. Mirrors the gemini-3-pro-preview / grok-2 rescues above.
135 - */
136 -add_action('admin_init', function () {
137 - if (get_option('mxchat_claude_4_retire_remap_done')) {
138 - return;
139 - }
140 - $map = array(
141 - 'claude-opus-4-20250514' => 'claude-opus-4-8',
142 - 'claude-sonnet-4-20250514' => 'claude-sonnet-4-6',
143 - );
144 - $opts = get_option('mxchat_options');
145 - if (is_array($opts)) {
146 - $changed = false;
147 - if (isset($opts['model']) && isset($map[$opts['model']])) {
148 - $opts['model'] = $map[$opts['model']];
149 - $changed = true;
150 - }
151 - if (isset($opts['content_model']) && isset($map[$opts['content_model']])) {
152 - $opts['content_model'] = $map[$opts['content_model']];
153 - $changed = true;
154 - }
155 - if ($changed) {
156 - update_option('mxchat_options', $opts);
157 - }
158 - }
159 - update_option('mxchat_claude_4_retire_remap_done', 1);
160 -});
161 -
162 -/**
163 - * Exclude MxChat assets from caching plugin optimizations
164 - *
165 - * This prevents issues with WP Rocket, LiteSpeed Cache, Autoptimize, WP Super Cache,
166 - * W3 Total Cache, SG Optimizer, and similar plugins that may break the chatbot by
167 - * removing "unused" CSS, minifying/combining JS, or deferring/delaying jQuery.
168 - *
169 - * Both chat-script.js and floating-script.js depend on jQuery, so jQuery must also
170 - * be excluded from any optimization that changes load order or timing.
171 - */
172 -
173 -// ── WP Rocket ────────────────────────────────────────────────────────────────
174 -
175 -// Exclude from Remove Unused CSS (RUCSS)
176 -add_filter('rocket_rucss_inline_atts_exclusions', function($exclusions) {
177 - if (!is_array($exclusions)) $exclusions = array();
178 - $exclusions[] = 'mxchat';
179 - return $exclusions;
180 -});
181 -
182 -// Exclude CSS from minification/combination
183 -add_filter('rocket_exclude_css', function($excluded) {
184 - if (!is_array($excluded)) $excluded = array();
185 - $excluded[] = '/plugins/mxchat-basic/css/chat-style.css';
186 - return $excluded;
187 -});
188 -
189 -// Exclude JS from minification/combination
190 -add_filter('rocket_exclude_js', function($excluded) {
191 - if (!is_array($excluded)) $excluded = array();
192 - $excluded[] = '/plugins/mxchat-basic/js/chat-script.js';
193 - $excluded[] = '/plugins/mxchat-basic/js/floating-script.js';
194 - $excluded[] = '/jquery-core';
195 - $excluded[] = '/jquery.min.js';
196 - $excluded[] = '/jquery.js';
197 - $excluded[] = '/jquery-migrate';
198 - return $excluded;
199 -});
200 -
201 -// Exclude JS from defer
202 -add_filter('rocket_exclude_defer_js', function($excluded) {
203 - if (!is_array($excluded)) $excluded = array();
204 - $excluded[] = '/plugins/mxchat-basic/js/chat-script.js';
205 - $excluded[] = '/plugins/mxchat-basic/js/floating-script.js';
206 - $excluded[] = '/jquery-core';
207 - $excluded[] = '/jquery.min.js';
208 - $excluded[] = '/jquery.js';
209 - $excluded[] = '/jquery-migrate';
210 - return $excluded;
211 -});
212 -
213 -// Exclude from delay JS execution
214 -add_filter('rocket_delay_js_exclusions', function($excluded) {
215 - if (!is_array($excluded)) $excluded = array();
216 - $excluded[] = 'mxchat';
217 - $excluded[] = 'chat-script';
218 - $excluded[] = 'floating-script';
219 - $excluded[] = '/jquery-core';
220 - $excluded[] = '/jquery.min.js';
221 - $excluded[] = '/jquery.js';
222 - $excluded[] = '/jquery-migrate';
223 - return $excluded;
224 -});
225 -
226 -// ── LiteSpeed Cache ──────────────────────────────────────────────────────────
227 -
228 -// Exclude CSS from optimization
229 -add_filter('litespeed_optimize_css_excludes', function($excluded) {
230 - if (!is_array($excluded)) $excluded = array();
231 - $excluded[] = 'chat-style.css';
232 - $excluded[] = 'mxchat';
233 - return $excluded;
234 -});
235 -
236 -// Exclude from UCSS (Unique CSS) - prevents LiteSpeed from stripping "unused" MxChat CSS
237 -add_filter('litespeed_ucss_whitelist', function($whitelist) {
238 - if (!is_array($whitelist)) $whitelist = array();
239 - $whitelist[] = '.mxchat-chatbot-wrapper';
240 - $whitelist[] = '.floating-chatbot';
241 - $whitelist[] = '.floating-chatbot-button';
242 - $whitelist[] = '.chatbot-top-bar';
243 - $whitelist[] = '.mxchat-chatbot';
244 - $whitelist[] = '.chat-container';
245 - $whitelist[] = '.chat-box';
246 - $whitelist[] = '.bot-message';
247 - $whitelist[] = '.input-container';
248 - $whitelist[] = '.chat-input';
249 - $whitelist[] = '.send-button';
250 - $whitelist[] = '.pre-chat-message';
251 - $whitelist[] = '.mxchat-popular-questions';
252 - $whitelist[] = '.chat-toolbar';
253 - $whitelist[] = '.exit-chat';
254 - $whitelist[] = '.email-blocker';
255 - return $whitelist;
256 -});
257 -
258 -// Exclude CSS from CCSS (Critical CSS) generation
259 -add_filter('litespeed_optm_ccss_exc', function($excluded) {
260 - if (!is_array($excluded)) $excluded = array();
261 - $excluded[] = 'chat-style.css';
262 - $excluded[] = 'mxchat';
263 - return $excluded;
264 -});
265 -
266 -// Exclude JS from defer
267 -add_filter('litespeed_optm_js_defer_exc', function($excluded) {
268 - if (!is_array($excluded)) $excluded = array();
269 - $excluded[] = 'chat-script.js';
270 - $excluded[] = 'floating-script.js';
271 - $excluded[] = 'mxchat';
272 - $excluded[] = 'jquery.min.js';
273 - $excluded[] = 'jquery.js';
274 - return $excluded;
275 -});
276 -
277 -// Exclude JS from combining
278 -add_filter('litespeed_optm_js_exc', function($excluded) {
279 - if (!is_array($excluded)) $excluded = array();
280 - $excluded[] = 'chat-script.js';
281 - $excluded[] = 'floating-script.js';
282 - $excluded[] = 'mxchat';
283 - $excluded[] = 'jquery.min.js';
284 - $excluded[] = 'jquery.js';
285 - return $excluded;
286 -});
287 -
288 -// Exclude JS from delayed execution
289 -add_filter('litespeed_optm_js_delay_exc', function($excluded) {
290 - if (!is_array($excluded)) $excluded = array();
291 - $excluded[] = 'chat-script.js';
292 - $excluded[] = 'floating-script.js';
293 - $excluded[] = 'mxchat';
294 - return $excluded;
295 -});
296 -
297 -// Exclude from Guest Mode optimization
298 -add_filter('litespeed_guest_optm_exc', function($excluded) {
299 - if (!is_array($excluded)) $excluded = array();
300 - $excluded[] = 'mxchat';
301 - $excluded[] = 'chat-style';
302 - $excluded[] = 'chat-script';
303 - $excluded[] = 'floating-script';
304 - return $excluded;
305 -});
306 -
307 -// ── Autoptimize ──────────────────────────────────────────────────────────────
308 -
309 -// Exclude CSS from optimization (comma-separated strings)
310 -add_filter('autoptimize_filter_css_exclude', function($excluded) {
311 - if (!is_string($excluded)) $excluded = '';
312 - return $excluded . ', mxchat, chat-style.css';
313 -});
314 -
315 -// Exclude JS from optimization (comma-separated strings)
316 -add_filter('autoptimize_filter_js_exclude', function($excluded) {
317 - if (!is_string($excluded)) $excluded = '';
318 - return $excluded . ', mxchat, chat-script.js, floating-script.js, jquery.min.js, jquery.js';
319 -});
320 -
321 -// ── SG Optimizer (SiteGround) ────────────────────────────────────────────────
322 -
323 -add_filter('sgo_js_minify_exclude', function($excluded) {
324 - if (!is_array($excluded)) $excluded = array();
325 - $excluded[] = 'chat-script.js';
326 - $excluded[] = 'floating-script.js';
327 - $excluded[] = 'jquery.min.js';
328 - return $excluded;
329 -});
330 -
331 -add_filter('sgo_javascript_combine_exclude', function($excluded) {
332 - if (!is_array($excluded)) $excluded = array();
333 - $excluded[] = 'chat-script.js';
334 - $excluded[] = 'floating-script.js';
335 - $excluded[] = 'jquery.min.js';
336 - return $excluded;
337 -});
338 -
339 -add_filter('sgo_js_async_exclude', function($excluded) {
340 - if (!is_array($excluded)) $excluded = array();
341 - $excluded[] = 'chat-script.js';
342 - $excluded[] = 'floating-script.js';
343 - $excluded[] = 'jquery.min.js';
344 - return $excluded;
345 -});
346 -
347 -// ── W3 Total Cache ───────────────────────────────────────────────────────────
348 -
349 -add_filter('w3tc_minify_js_do_tag_minification', function($do_minify, $script_tag, $file) {
350 - if (strpos($file, 'chat-script.js') !== false ||
351 - strpos($file, 'floating-script.js') !== false ||
352 - strpos($file, 'jquery.min.js') !== false ||
353 - strpos($file, 'jquery.js') !== false) {
354 - return false;
355 - }
356 - return $do_minify;
357 -}, 10, 3);
358 -
359 -// ── WP Super Cache ──────────────────────────────────────────────────────────
360 -
361 -add_filter('wpsc_rejected_uri', function($rejected) {
362 - if (!is_array($rejected)) $rejected = array();
363 - $rejected[] = 'wp-admin/admin-ajax.php';
364 - return $rejected;
365 -});
366 -
367 -// ── Page-cache bypass for chat AJAX (companion to the 3.2.6 nonce-race hotfix)
368 -// Each cache plugin gets its own filter export so that visitors hitting an
369 -// edge-cached page never receive cached chat-AJAX responses. The chat send /
370 -// stream send / file upload all POST to /wp-admin/admin-ajax.php with
371 -// `action=mxchat_*`. Without these exports, a cache plugin can stale a response
372 -// and break the per-session nonce flow on the first message.
373 -
374 -// WP Rocket — `rocket_cache_reject_uri` takes a flat array of regex strings.
375 -add_filter('rocket_cache_reject_uri', function($uris) {
376 - if (!is_array($uris)) $uris = array();
377 - $uris[] = '/wp-admin/admin-ajax\.php\?action=mxchat_.*';
378 - return $uris;
379 -});
380 -
381 -// LiteSpeed Cache — `litespeed_cache_no_cache_for_request` short-circuits
382 -// caching when the request matches our chat-AJAX pattern.
383 -add_filter('litespeed_cache_no_cache_for_request', function($no_cache) {
384 - if ($no_cache) return $no_cache;
385 - if (!empty($_SERVER['REQUEST_URI']) &&
386 - strpos($_SERVER['REQUEST_URI'], '/wp-admin/admin-ajax.php') !== false &&
387 - !empty($_REQUEST['action']) &&
388 - strpos((string) $_REQUEST['action'], 'mxchat_') === 0) {
389 - return true;
390 - }
391 - return $no_cache;
392 -});
393 -
394 -// W3 Total Cache — `w3tc_pgcache_request_skip_uri` flips page-cache off when
395 -// the URI matches.
396 -add_filter('w3tc_pgcache_request_skip_uri', function($skip) {
397 - if ($skip) return $skip;
398 - if (!empty($_SERVER['REQUEST_URI']) &&
399 - strpos($_SERVER['REQUEST_URI'], '/wp-admin/admin-ajax.php') !== false &&
400 - !empty($_REQUEST['action']) &&
401 - strpos((string) $_REQUEST['action'], 'mxchat_') === 0) {
402 - return true;
403 - }
404 - return $skip;
405 -});
406 -
407 -// FlyingPress — `flying_press_cacheable` takes a boolean and is run per
408 -// request. Same pattern as LiteSpeed / W3TC.
409 -add_filter('flying_press_cacheable', function($cacheable) {
410 - if (!$cacheable) return $cacheable;
411 - if (!empty($_SERVER['REQUEST_URI']) &&
412 - strpos($_SERVER['REQUEST_URI'], '/wp-admin/admin-ajax.php') !== false &&
413 - !empty($_REQUEST['action']) &&
414 - strpos((string) $_REQUEST['action'], 'mxchat_') === 0) {
415 - return false;
416 - }
417 - return $cacheable;
418 -});
419 -
420 -// Include classes with error handling
421 -function mxchat_include_classes() {
422 - $class_files = array(
423 - 'includes/class-mxchat-model-catalog.php',
424 - 'includes/class-mxchat-model-liveness.php',
425 - 'includes/class-mxchat-session-store.php',
426 - 'includes/class-mxchat-live-agent-schedule.php',
427 - 'includes/class-mxchat-tool-registry.php',
428 - 'includes/class-mxchat-integrator.php',
429 - 'includes/class-mxchat-admin.php',
430 - 'includes/class-mxchat-public.php',
431 - 'includes/class-mxchat-utils.php',
432 - 'includes/class-mxchat-user.php',
433 - 'includes/class-mxchat-privacy.php',
434 - 'includes/class-mxchat-meta-box.php',
435 - 'includes/class-mxchat-chunker.php',
436 - 'includes/class-mxchat-word-handler.php',
437 - 'includes/class-mxchat-content-generator.php',
438 - 'includes/class-mxchat-cache-purge.php',
439 - 'includes/class-mxchat-editor-assistant.php',
440 - 'includes/class-rest-api.php',
441 - 'admin/class-ajax-handler.php',
442 - 'admin/class-pinecone-manager.php',
443 - 'admin/class-knowledge-manager.php'
444 - );
445 -
446 - foreach ($class_files as $file) {
447 - $file_path = plugin_dir_path(__FILE__) . $file;
448 - if (file_exists($file_path)) {
449 - require_once $file_path;
450 - } else {
451 - //error_log('MxChat: Missing class file - ' . $file);
452 - }
453 - }
454 -
455 - // Register the native function-calling admin-post save handler (a41dee).
456 - if (class_exists('MxChat_Tool_Registry')) {
457 - MxChat_Tool_Registry::init();
458 - }
459 -
460 - // GDPR: register with WP's personal-data export/erase tools (b81e42).
461 - if (class_exists('MxChat_Privacy')) {
462 - MxChat_Privacy::init();
463 - }
464 -
465 - // Per-session state store: retention cron + the cron-independent
466 - // migration drain off admin_init (b64b77).
467 - if (class_exists('MxChat_Session_Store')) {
468 - MxChat_Session_Store::init();
469 - }
470 -
471 - // Daily model-liveness check + its warning notice (b65e8d). Read-only and
472 - // fail-open: one listing request per in-use provider per day, none at all
473 - // when no key is stored.
474 - if (class_exists('MxChat_Model_Liveness')) {
475 - MxChat_Model_Liveness::init();
476 - }
477 -
478 - // Editor Assistant — free, OFF-by-default block-editor AI actions (plan-8cb0cb).
479 - // init() wires REST + streaming AJAX + sidebar enqueue ONLY when the
480 - // mxchat_editor_assistant_enabled option is 'on'; otherwise zero footprint.
481 - if (class_exists('MxChat_Editor_Assistant')) {
482 - MxChat_Editor_Assistant::init();
483 - }
484 -
485 - // Admin pages that aren't classes (procedural include).
486 - if (is_admin()) {
487 - $admin_api_page = plugin_dir_path(__FILE__) . 'includes/admin-api-page.php';
488 - if (file_exists($admin_api_page)) {
489 - require_once $admin_api_page;
490 - }
491 - // f7c7d4 renamed this file admin-dashboard-page.php → admin-onboarding-page.php.
492 - // The require MUST live here (admin bootstrap) and not just inside
493 - // mxchat_add_plugin_page() on the admin_menu hook — admin_menu does NOT
494 - // fire on admin-ajax.php requests, so the wizard's AJAX handlers
495 - // (plan-905439: mxchat_onboarding_kb_status / save_step / mark_step /
496 - // auto_graduate + the f7c7d4 dismiss handler) would never register.
497 - $admin_onboarding_page = plugin_dir_path(__FILE__) . 'includes/admin-onboarding-page.php';
498 - if (file_exists($admin_onboarding_page)) {
499 - require_once $admin_onboarding_page;
500 - }
501 - }
502 -}
503 -
504 -/**
505 - * Lazy-load the PDF parser library only when needed.
506 - * Avoids loading 44 files on every page request.
507 - */
508 -function mxchat_load_pdf_parser() {
509 - if (class_exists('\Smalot\PdfParser\Parser')) {
510 - return true;
511 - }
512 - $autoload_path = plugin_dir_path(__FILE__) . 'includes/pdf-parser/alt_autoload.php';
513 - if (file_exists($autoload_path)) {
514 - require_once $autoload_path;
515 - return true;
516 - }
517 - return false;
518 -}
519 -
520 -/**
521 - * Create URL click tracking table
522 - */
523 -function mxchat_create_url_clicks_table() {
524 - global $wpdb;
525 -
526 - $table_name = $wpdb->prefix . 'mxchat_url_clicks';
527 -
528 - $charset_collate = $wpdb->get_charset_collate();
529 -
530 - $sql = "CREATE TABLE $table_name (
531 - id mediumint(9) NOT NULL AUTO_INCREMENT,
532 - session_id varchar(100) NOT NULL,
533 - clicked_url text NOT NULL,
534 - message_context text,
535 - click_timestamp datetime DEFAULT CURRENT_TIMESTAMP,
536 - user_ip varchar(45),
537 - user_agent text,
538 - PRIMARY KEY (id),
539 - KEY session_id (session_id),
540 - KEY click_timestamp (click_timestamp)
541 - ) $charset_collate;";
542 -
543 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
544 - dbDelta($sql);
545 -}
546 -
547 -/**
548 - * Create the per-session state table (b64b77).
549 - *
550 - * Callable from the activation hook, which can run before plugins_loaded has
551 - * included the class files — so it loads the class itself when needed.
552 - */
553 -function mxchat_create_sessions_table() {
554 - if (!class_exists('MxChat_Session_Store')) {
555 - $path = plugin_dir_path(__FILE__) . 'includes/class-mxchat-session-store.php';
556 - if (!file_exists($path)) {
557 - return false;
558 - }
559 - require_once $path;
560 - }
561 -
562 - return MxChat_Session_Store::create_table();
563 -}
564 -
565 -/**
566 - * FIXED: Robust table creation and column management
567 - */
568 -function mxchat_create_chat_transcripts_table() {
569 - global $wpdb;
570 -
571 - $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
572 - $charset_collate = $wpdb->get_charset_collate();
573 -
574 - // Create table with ALL columns including user_name from the start
575 - $sql = "CREATE TABLE $table_name (
576 - id MEDIUMINT(9) NOT NULL AUTO_INCREMENT,
577 - user_id MEDIUMINT(9) DEFAULT 0,
578 - session_id VARCHAR(255) NOT NULL,
579 - role VARCHAR(255) NOT NULL,
580 - message TEXT NOT NULL,
581 - user_email VARCHAR(255) DEFAULT NULL,
582 - user_name VARCHAR(100) DEFAULT NULL,
583 - user_identifier VARCHAR(255) DEFAULT NULL,
584 - originating_page_url TEXT DEFAULT NULL,
585 - originating_page_title VARCHAR(500) DEFAULT NULL,
586 - timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
587 - PRIMARY KEY (id),
588 - KEY session_id (session_id),
589 - KEY user_email (user_email),
590 - KEY timestamp (timestamp)
591 - ) $charset_collate;";
592 -
593 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
594 - $result = dbDelta($sql);
595 -
596 - // Log the result for debugging
597 - if (empty($result)) {
598 - //error_log("MxChat: dbDelta returned empty result for chat transcripts table");
599 - } else {
600 - //error_log("MxChat: dbDelta result: " . print_r($result, true));
601 - }
602 -
603 - // IMPORTANT: Ensure all columns exist for existing installations
604 - mxchat_ensure_all_columns($table_name);
605 -}
606 -
607 -/**
608 - * Ensure all required columns exist (for upgrades)
609 - */
610 -function mxchat_ensure_all_columns($table_name) {
611 - global $wpdb;
612 -
613 - // First check if table exists
614 - $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
615 - if (!$table_exists) {
616 - //error_log("MxChat: Table $table_name does not exist, cannot add columns");
617 - return;
618 - }
619 -
620 - // Define all required columns and their types
621 - $required_columns = [
622 - 'user_identifier' => 'VARCHAR(255) DEFAULT NULL',
623 - 'user_email' => 'VARCHAR(255) DEFAULT NULL',
624 - 'user_name' => 'VARCHAR(100) DEFAULT NULL',
625 - 'originating_page_url' => 'TEXT DEFAULT NULL',
626 - 'originating_page_title' => 'VARCHAR(500) DEFAULT NULL',
627 - 'rag_context' => 'LONGTEXT DEFAULT NULL'
628 - ];
629 -
630 - // Get existing columns
631 - $existing_columns = $wpdb->get_results("SHOW COLUMNS FROM $table_name");
632 - if (empty($existing_columns)) {
633 - //error_log("MxChat: Could not get columns for table $table_name");
634 - return;
635 - }
636 -
637 - $existing_column_names = array_column($existing_columns, 'Field');
638 -
639 - // Add missing columns
640 - foreach ($required_columns as $column_name => $column_definition) {
641 - if (!in_array($column_name, $existing_column_names)) {
642 - $alter_sql = "ALTER TABLE $table_name ADD COLUMN $column_name $column_definition";
643 - $result = $wpdb->query($alter_sql);
644 -
645 - if ($result === false) {
646 - //error_log("MxChat: Failed to add column $column_name to $table_name. Error: " . $wpdb->last_error);
647 - } else {
648 - //error_log("MxChat: Successfully added column $column_name to $table_name");
649 - }
650 - }
651 - }
652 -}
653 -
654 -/**
655 - * Add role restriction column to knowledge base table
656 - */
657 -function mxchat_add_role_restriction_column() {
658 - global $wpdb;
659 - $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
660 -
661 - // Check if table exists first
662 - $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
663 - if (!$table_exists) {
664 - //error_log("MxChat: System prompt content table does not exist, cannot add role_restriction column");
665 - return;
666 - }
667 -
668 - // Check if column already exists
669 - $column_exists = $wpdb->get_results(
670 - $wpdb->prepare(
671 - "SHOW COLUMNS FROM {$table_name} LIKE %s",
672 - 'role_restriction'
673 - )
674 - );
675 -
676 - if (empty($column_exists)) {
677 - $alter_sql = "ALTER TABLE {$table_name} ADD COLUMN role_restriction VARCHAR(50) DEFAULT 'public' AFTER source_url";
678 - $result = $wpdb->query($alter_sql);
679 -
680 - if ($result === false) {
681 - //error_log("MxChat: Failed to add role_restriction column. Error: " . $wpdb->last_error);
682 - } else {
683 - //error_log("MxChat: Successfully added role_restriction column");
684 -
685 - // Set all existing records to 'public' (everyone can access)
686 - $update_result = $wpdb->query(
687 - "UPDATE {$table_name}
688 - SET role_restriction = 'public'
689 - WHERE role_restriction IS NULL OR role_restriction = ''"
690 - );
691 -
692 - if ($update_result !== false) {
693 - //error_log("MxChat: Updated {$update_result} existing records to public access");
694 - }
695 - }
696 - }
697 -}
698 -
699 -/**
700 - * Add enabled_bots column to intents table for multi-bot action filtering
701 - */
702 -function mxchat_add_enabled_bots_column() {
703 - global $wpdb;
704 - $table_name = $wpdb->prefix . 'mxchat_intents';
705 -
706 - // Check if table exists first
707 - $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
708 - if (!$table_exists) {
709 - //error_log("MxChat: Intents table does not exist, cannot add enabled_bots column");
710 - return;
711 - }
712 -
713 - // Check if column already exists
714 - $column_exists = $wpdb->get_results(
715 - $wpdb->prepare(
716 - "SHOW COLUMNS FROM {$table_name} LIKE %s",
717 - 'enabled_bots'
718 - )
719 - );
720 -
721 - if (empty($column_exists)) {
722 - $alter_sql = "ALTER TABLE {$table_name} ADD COLUMN enabled_bots LONGTEXT DEFAULT NULL AFTER enabled";
723 - $result = $wpdb->query($alter_sql);
724 -
725 - if ($result === false) {
726 - //error_log("MxChat: Failed to add enabled_bots column. Error: " . $wpdb->last_error);
727 - } else {
728 - //error_log("MxChat: Successfully added enabled_bots column");
729 -
730 - // Set all existing actions to work with 'default' bot for backward compatibility
731 - $default_bots = json_encode(['default']);
732 - $update_result = $wpdb->query(
733 - $wpdb->prepare(
734 - "UPDATE {$table_name}
735 - SET enabled_bots = %s
736 - WHERE enabled_bots IS NULL OR enabled_bots = ''",
737 - $default_bots
738 - )
739 - );
740 -
741 - if ($update_result !== false) {
742 - //error_log("MxChat: Updated {$update_result} existing actions to work with default bot");
743 - }
744 - }
745 - }
746 -}
747 -
748 -/**
749 - * Create Pinecone role restrictions table with multi-bot support
750 - */
751 -function mxchat_create_pinecone_roles_table() {
752 - global $wpdb;
753 -
754 - $table_name = $wpdb->prefix . 'mxchat_pinecone_roles';
755 - $charset_collate = $wpdb->get_charset_collate();
756 -
757 - $sql = "CREATE TABLE $table_name (
758 - id mediumint(9) NOT NULL AUTO_INCREMENT,
759 - vector_id varchar(255) NOT NULL,
760 - bot_id varchar(50) NOT NULL DEFAULT 'default',
761 - source_url text,
762 - role_restriction varchar(50) DEFAULT 'public',
763 - updated_at timestamp DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
764 - PRIMARY KEY (id),
765 - UNIQUE KEY vector_bot (vector_id, bot_id),
766 - KEY role_restriction (role_restriction),
767 - KEY bot_id (bot_id)
768 - ) $charset_collate;";
769 -
770 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
771 - dbDelta($sql);
772 -}
773 -
774 -/**
775 - * Add bot_id column to mxchat_pinecone_roles table for multi-bot support
776 - * This migration runs once to update existing installations
777 - */
778 -function mxchat_migrate_pinecone_roles_add_bot_id() {
779 - global $wpdb;
780 -
781 - // Check if migration already ran
782 - $migration_version = get_option('mxchat_pinecone_roles_migration_version', '0');
783 - if (version_compare($migration_version, '2.5.2', '>=')) {
784 - return; // Already migrated
785 - }
786 -
787 - $table_name = $wpdb->prefix . 'mxchat_pinecone_roles';
788 -
789 - // Check if table exists
790 - if ($wpdb->get_var("SHOW TABLES LIKE '{$table_name}'") != $table_name) {
791 - return; // Table doesn't exist yet
792 - }
793 -
794 - // Check if bot_id column already exists
795 - $column_exists = $wpdb->get_results("SHOW COLUMNS FROM {$table_name} LIKE 'bot_id'");
796 -
797 - if (empty($column_exists)) {
798 - // Add bot_id column
799 - $wpdb->query("ALTER TABLE {$table_name} ADD COLUMN bot_id VARCHAR(50) NOT NULL DEFAULT 'default' AFTER vector_id");
800 -
801 - // Update the unique key to include bot_id
802 - $wpdb->query("ALTER TABLE {$table_name} DROP INDEX vector_id");
803 - $wpdb->query("ALTER TABLE {$table_name} ADD UNIQUE KEY vector_bot (vector_id, bot_id)");
804 -
805 - // Add index for bot_id
806 - $wpdb->query("ALTER TABLE {$table_name} ADD KEY bot_id (bot_id)");
807 -
808 - //error_log('MxChat: Successfully added bot_id column to mxchat_pinecone_roles table');
809 - }
810 -
811 - // Mark migration as complete
812 - update_option('mxchat_pinecone_roles_migration_version', '2.5.2');
813 -}
814 -
815 -/**
816 - * 2.5.6: Add content_type column to mxchat_system_prompt_content table
817 - * Enables filtering knowledge base by content type (posts, pages, PDFs, etc.)
818 - */
819 -function mxchat_migrate_add_content_type_column() {
820 - global $wpdb;
821 -
822 - // Check if migration already ran
823 - $migration_version = get_option('mxchat_content_type_migration_version', '0');
824 - if (version_compare($migration_version, '2.5.6', '>=')) {
825 - return;
826 - }
827 -
828 - $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
829 -
830 - // Check if table exists
831 - if ($wpdb->get_var("SHOW TABLES LIKE '{$table_name}'") != $table_name) {
832 - return;
833 - }
834 -
835 - // Check if content_type column already exists
836 - $column_exists = $wpdb->get_results("SHOW COLUMNS FROM {$table_name} LIKE 'content_type'");
837 -
838 - if (empty($column_exists)) {
839 - // Add content_type column with default value 'content' for backwards compatibility
840 - $wpdb->query("ALTER TABLE {$table_name} ADD COLUMN content_type VARCHAR(50) DEFAULT 'content' AFTER role_restriction");
841 -
842 - // Add index for better query performance
843 - $wpdb->query("ALTER TABLE {$table_name} ADD KEY content_type (content_type)");
844 -
845 - //error_log('MxChat: Successfully added content_type column to mxchat_system_prompt_content table');
846 - }
847 -
848 - // Mark migration as complete
849 - update_option('mxchat_content_type_migration_version', '2.5.6');
850 -}
851 -
852 -/**
853 - * 3.2.4: Backfill the active embedding model option for installs that already
854 - * have KB content but no stamped model. The mismatch warning compares this
855 - * against the user's currently selected model — no per-row column needed.
856 - */
857 -function mxchat_backfill_active_embedding_model() {
858 - global $wpdb;
859 -
860 - if (get_option('mxchat_active_embedding_model', '') !== '') {
861 - return;
862 - }
863 -
864 - $kb_table = $wpdb->prefix . 'mxchat_system_prompt_content';
865 - if ($wpdb->get_var("SHOW TABLES LIKE '{$kb_table}'") !== $kb_table) {
866 - return;
867 - }
868 -
869 - $kb_count = (int) $wpdb->get_var("SELECT COUNT(*) FROM {$kb_table}");
870 - if ($kb_count > 0) {
871 - $options = get_option('mxchat_options', array());
872 - $current_model = $options['embedding_model'] ?? 'text-embedding-ada-002';
873 - update_option('mxchat_active_embedding_model', $current_model, false);
874 - }
875 -}
876 -
877 -/**
878 - * 2.5.2: Create queue processing tables for reliable background processing
879 - */
880 -function mxchat_create_queue_tables() {
881 - global $wpdb;
882 - $charset_collate = $wpdb->get_charset_collate();
883 -
884 - // Main queue table
885 - $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
886 - $sql_queue = "CREATE TABLE $queue_table (
887 - id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
888 - queue_id varchar(64) NOT NULL,
889 - item_type varchar(20) NOT NULL,
890 - item_data longtext NOT NULL,
891 - status varchar(20) NOT NULL DEFAULT 'pending',
892 - bot_id varchar(50) NOT NULL DEFAULT 'default',
893 - priority int(11) NOT NULL DEFAULT 0,
894 - attempts int(11) NOT NULL DEFAULT 0,
895 - max_attempts int(11) NOT NULL DEFAULT 3,
896 - error_message text DEFAULT NULL,
897 - created_at datetime NOT NULL,
898 - started_at datetime DEFAULT NULL,
899 - completed_at datetime DEFAULT NULL,
900 - PRIMARY KEY (id),
901 - KEY queue_id (queue_id),
902 - KEY status (status),
903 - KEY item_type (item_type),
904 - KEY priority (priority)
905 - ) $charset_collate;";
906 -
907 - // Queue metadata table
908 - $meta_table = $wpdb->prefix . 'mxchat_queue_meta';
909 - $sql_meta = "CREATE TABLE $meta_table (
910 - id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
911 - queue_id varchar(64) NOT NULL,
912 - meta_key varchar(255) NOT NULL,
913 - meta_value longtext,
914 - PRIMARY KEY (id),
915 - KEY queue_id (queue_id),
916 - KEY meta_key (meta_key)
917 - ) $charset_collate;";
918 -
919 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
920 - dbDelta($sql_queue);
921 - dbDelta($sql_meta);
922 -
923 - //error_log("MxChat: Queue tables created/updated successfully");
924 -}
925 -
926 -/**
927 - * Create transcript translations table for persisting translations
928 - */
929 -function mxchat_create_translations_table() {
930 - global $wpdb;
931 - $charset_collate = $wpdb->get_charset_collate();
932 -
933 - $table_name = $wpdb->prefix . 'mxchat_transcript_translations';
934 - $sql = "CREATE TABLE $table_name (
935 - id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
936 - session_id varchar(255) NOT NULL,
937 - language_code varchar(10) NOT NULL,
938 - translations longtext NOT NULL,
939 - created_at datetime NOT NULL,
940 - updated_at datetime NOT NULL,
941 - PRIMARY KEY (id),
942 - UNIQUE KEY session_lang (session_id, language_code),
943 - KEY session_id (session_id)
944 - ) $charset_collate;";
945 -
946 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
947 - dbDelta($sql);
948 -}
949 -
950 -/**
951 - * Create per-session satisfaction ratings table (v3.2.6)
952 - * Stores one 👍/👎 rating + optional feedback per chat session.
953 - */
954 -function mxchat_create_session_ratings_table() {
955 - global $wpdb;
956 - $charset_collate = $wpdb->get_charset_collate();
957 -
958 - $table_name = $wpdb->prefix . 'mxchat_session_ratings';
959 - $sql = "CREATE TABLE $table_name (
960 - id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
961 - session_id varchar(255) NOT NULL,
962 - bot_id varchar(50) NOT NULL DEFAULT 'default',
963 - rating_value tinyint(1) NOT NULL,
964 - rating_feedback text DEFAULT NULL,
965 - created_at datetime NOT NULL,
966 - PRIMARY KEY (id),
967 - UNIQUE KEY session_id (session_id),
968 - KEY bot_id (bot_id),
969 - KEY created_at (created_at)
970 - ) $charset_collate;";
971 -
972 - require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
973 - dbDelta($sql);
974 -}
975 -
976 -/**
977 - * 2.5.2: Fix URL column size to support long URLs (especially with UTF-8 encoding)
978 - * This fixes "url, source_url. The supplied values may be too long" errors
979 - */
980 -function mxchat_fix_url_column_size() {
981 - global $wpdb;
982 - $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
983 -
984 - // Check if table exists
985 - $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
986 - if (!$table_exists) {
987 - return;
988 - }
989 -
990 - // Change url and source_url from VARCHAR to TEXT to handle long URLs
991 - // This is especially important for URLs with UTF-8 encoded characters (Hebrew, Arabic, etc.)
992 - $wpdb->query("ALTER TABLE {$table_name} MODIFY COLUMN url TEXT");
993 - $wpdb->query("ALTER TABLE {$table_name} MODIFY COLUMN source_url TEXT");
994 -
995 - //error_log("MxChat: Successfully updated url and source_url columns to TEXT type for long URL support");
996 -}
997 -
998 -/**
999 - * Migrate deprecated AI models to their replacements
1000 - * Version 2.5.1: Migrate Claude 3.5 Sonnet (deprecated) to Claude 3.7 Sonnet
1001 - * Version 3.1.2: Convert chat transcripts table to utf8mb4 for emoji support
1002 - * Without utf8mb4, any bot response containing emojis silently fails to insert.
1003 - */
1004 -function mxchat_migrate_transcripts_charset() {
1005 - global $wpdb;
1006 - $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
1007 - $wpdb->query("ALTER TABLE $table_name CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci");
1008 -}
1009 -
1010 -/**
1011 - * Version 3.0.55: Migrate GPT-4 series models (deprecated 2026-02-17) to GPT-5 series
1012 - */
1013 -function mxchat_migrate_deprecated_models() {
1014 - $options = get_option('mxchat_options', array());
1015 - $migrated = false;
1016 - $migration_message = '';
1017 -
1018 - if (!isset($options['model'])) {
1019 - return;
1020 - }
1021 -
1022 - $current_model = $options['model'];
1023 -
1024 - // Migrate deprecated/retired Claude models BY TIER so a rescued site lands on
1025 - // the current generation, not an older intermediate (plan dc91bd — the previous
1026 - // single target, claude-opus-4-6, is now two Opus generations behind).
1027 - $deprecated_claude_opus = array(
1028 - 'claude-3-opus-20240229', // Retired Jan 5, 2026
1029 - 'claude-opus-4-20250514', // Deprecated
1030 - 'claude-opus-4-1-20250805', // Retired Aug 5, 2026 (first-party API)
1031 - );
1032 - $deprecated_claude_sonnet = array(
1033 - 'claude-3-5-sonnet-20240620', // Retired Oct 28, 2025
1034 - 'claude-3-5-sonnet-20241022', // Retired Oct 28, 2025
1035 - 'claude-3-7-sonnet-20250219', // Retired Feb 19, 2026
1036 - 'claude-3-sonnet-20240229', // Legacy
1037 - 'claude-sonnet-4-20250514', // Deprecated
1038 - );
1039 - $deprecated_claude_haiku = array(
1040 - 'claude-3-haiku-20240307', // Legacy
1041 - 'claude-3-5-haiku-20241022', // Deprecated
1042 - );
1043 - if (in_array($current_model, $deprecated_claude_opus, true)) {
1044 - $options['model'] = 'claude-opus-5';
1045 - $migrated = true;
1046 - $migration_message = sprintf(
1047 - 'Your chatbot model has been automatically updated from %s to Claude Opus 5 because Anthropic retired the older Claude model.',
1048 - $current_model
1049 - );
1050 - } elseif (in_array($current_model, $deprecated_claude_sonnet, true)) {
1051 - $options['model'] = 'claude-sonnet-5';
1052 - $migrated = true;
1053 - $migration_message = sprintf(
1054 - 'Your chatbot model has been automatically updated from %s to Claude Sonnet 5 because Anthropic retired the older Claude model.',
1055 - $current_model
1056 - );
1057 - } elseif (in_array($current_model, $deprecated_claude_haiku, true)) {
1058 - $options['model'] = 'claude-haiku-4-5-20251001';
1059 - $migrated = true;
1060 - $migration_message = sprintf(
1061 - 'Your chatbot model has been automatically updated from %s to Claude Haiku 4.5 because Anthropic retired the older Claude model.',
1062 - $current_model
1063 - );
1064 - }
1065 -
1066 - // Migrate deprecated GPT-4 series and GPT-3.5 Turbo to GPT-5.6 Sol.
1067 - // (Previous target gpt-5.1-chat-latest itself retires 2026-08-10 — never
1068 - // migrate onto a model that is already on a deprecation list.)
1069 - if (in_array($current_model, array('gpt-4o', 'gpt-4.1-2025-04-14', 'gpt-4-turbo', 'gpt-4', 'gpt-3.5-turbo'), true)) {
1070 - $options['model'] = 'gpt-5.6-sol';
1071 - $migrated = true;
1072 - $migration_message = sprintf(
1073 - 'Your chatbot model has been automatically updated from %s to GPT-5.6 Sol due to OpenAI deprecating older models.',
1074 - $current_model
1075 - );
1076 - }
1077 -
1078 - // Migrate the gpt-5.x-chat-latest aliases OpenAI retires on August 10, 2026.
1079 - // Replacement per OpenAI's deprecations page: gpt-5.6-sol (plan e46b8f).
1080 - if (in_array($current_model, array('gpt-5.1-chat-latest', 'gpt-5.3-chat-latest'), true)) {
1081 - $options['model'] = 'gpt-5.6-sol';
1082 - $migrated = true;
1083 - $migration_message = sprintf(
1084 - 'Your chatbot model has been automatically updated from %s to GPT-5.6 Sol because OpenAI retires the GPT-5.x Chat Latest models on August 10, 2026.',
1085 - $current_model
1086 - );
1087 - }
1088 -
1089 - // The content generator has its own model option — same retirement applies.
1090 - if (isset($options['content_model'])
1091 - && in_array($options['content_model'], array('gpt-5.1-chat-latest', 'gpt-5.3-chat-latest'), true)) {
1092 - $old_content_model = $options['content_model'];
1093 - $options['content_model'] = 'gpt-5.6-sol';
1094 - $migrated = true;
1095 - $migration_message = trim($migration_message . ' ' . sprintf(
1096 - 'Your content generation model has also been updated from %s to GPT-5.6 Sol for the same OpenAI retirement.',
1097 - $old_content_model
1098 - ));
1099 - }
1100 -
1101 - // Migrate deprecated GPT-4o Mini and GPT-4.1 Mini to GPT-5 Mini
1102 - if (in_array($current_model, array('gpt-4o-mini', 'gpt-4.1-mini'), true)) {
1103 - $options['model'] = 'gpt-5-mini';
1104 - $migrated = true;
1105 - $migration_message = sprintf(
1106 - 'Your chatbot model has been automatically updated from %s to GPT-5 Mini due to OpenAI deprecating GPT-4 series models.',
1107 - $current_model
1108 - );
1109 - }
1110 -
1111 - // Migrate retired DeepSeek ids to DeepSeek V4 Flash — the vendor removed
1112 - // deepseek-chat and deepseek-reasoner on 2026-07-24 (hard cutoff, every
1113 - // request 400s). V4 Flash is DeepSeek's designated successor for the
1114 - // legacy deepseek-chat alias.
1115 - if (in_array($current_model, array('deepseek-chat', 'deepseek-reasoner'), true)) {
1116 - $options['model'] = 'deepseek-v4-flash';
1117 - $migrated = true;
1118 - $migration_message = sprintf(
1119 - 'Your chatbot model has been automatically updated from %s to DeepSeek V4 Flash because DeepSeek retired its older API models on July 24, 2026.',
1120 - $current_model
1121 - );
1122 - }
1123 -
1124 - if ($migrated) {
1125 - update_option('mxchat_options', $options);
1126 - update_option('mxchat_model_migrated_notice', true);
1127 - update_option('mxchat_model_migration_message', $migration_message);
1128 - }
1129 -}
1130 -
1131 -/**
1132 - * Show admin notice after model migration
1133 - */
1134 -function mxchat_show_migration_notice() {
1135 - if (get_option('mxchat_model_migrated_notice')) {
1136 - $migration_message = get_option('mxchat_model_migration_message', __('Your chatbot model has been automatically updated due to a model deprecation.', 'mxchat'));
1137 - ?>
1138 - <div class="notice notice-info is-dismissible">
1139 - <p>
1140 - <strong><?php esc_html_e('MxChat Model Updated', 'mxchat'); ?></strong><br>
1141 - <?php echo esc_html($migration_message); ?>
1142 - </p>
1143 - </div>
1144 - <?php
1145 - delete_option('mxchat_model_migrated_notice');
1146 - delete_option('mxchat_model_migration_message');
1147 - }
1148 -}
1149 -
1150 -/**
1151 - * Persistent admin notice when the provider rejected the configured model
1152 - * (model_not_found / no access). Set by mxchat_friendly_chat_error() in the
1153 - * integrator whenever a chat request fails on a model-access error — including
1154 - * requests from anonymous visitors, which is the case that otherwise stays
1155 - * invisible to the site owner for weeks (plan e46b8f).
1156 - *
1157 - * Deleted after render so it re-arms on the next failed chat: the notice keeps
1158 - * reappearing until the model is fixed, then stops on its own.
1159 - */
1160 -function mxchat_show_model_access_notice() {
1161 - if (!current_user_can('manage_options')) {
1162 - return;
1163 - }
1164 - $notice = get_option('mxchat_model_access_notice');
1165 - if (!is_array($notice) || empty($notice['model'])) {
1166 - return;
1167 - }
1168 - $settings_url = admin_url('admin.php?page=mxchat-max');
1169 - ?>
1170 - <div class="notice notice-error is-dismissible">
1171 - <p>
1172 - <strong><?php esc_html_e('MxChat: your AI model is being rejected by the provider', 'mxchat'); ?></strong><br>
1173 - <?php
1174 - printf(
1175 - /* translators: 1: model id, 2: provider name */
1176 - esc_html__('Chat requests using the model "%1$s" are failing because %2$s reports it as unavailable on your API key (it may have been retired). Visitors may be seeing errors instead of replies.', 'mxchat'),
1177 - esc_html($notice['model']),
1178 - esc_html(!empty($notice['provider']) ? $notice['provider'] : __('the AI provider', 'mxchat'))
1179 - );
1180 - ?>
1181 - <a href="<?php echo esc_url($settings_url); ?>"><?php esc_html_e('Choose a different model in MxChat Settings', 'mxchat'); ?></a>
1182 - </p>
1183 - </div>
1184 - <?php
1185 - delete_option('mxchat_model_access_notice');
1186 -}
1187 -
1188 -function mxchat_activate() {
1189 - global $wpdb;
1190 - $charset_collate = $wpdb->get_charset_collate();
1191 -
1192 - //error_log("MxChat: Running activation function");
1193 -
1194 - // Create chat transcripts table with improved function
1195 - mxchat_create_chat_transcripts_table();
1196 -
1197 - // Per-session state table (b64b77). Activation can run before
1198 - // plugins_loaded has included the class files, so require it directly.
1199 - mxchat_create_sessions_table();
1200 -
1201 - // System Prompt Content Table - UPDATED: Use TEXT for url and source_url columns
1202 - $system_prompt_table = $wpdb->prefix . 'mxchat_system_prompt_content';
1203 - $sql_system_prompt = "CREATE TABLE $system_prompt_table (
1204 - id MEDIUMINT(9) NOT NULL AUTO_INCREMENT,
1205 - url TEXT NOT NULL,
1206 - article_content LONGTEXT NOT NULL,
1207 - embedding_vector LONGTEXT,
1208 - source_url TEXT DEFAULT NULL,
1209 - role_restriction VARCHAR(50) DEFAULT 'public',
1210 - content_type VARCHAR(50) DEFAULT 'content',
1211 - timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
1212 - PRIMARY KEY (id),
1213 - KEY content_type (content_type)
1214 - ) $charset_collate;";
1215 -
1216 - // Intents Table - NOW INCLUDES enabled_bots column from the start
1217 - $intents_table = $wpdb->prefix . 'mxchat_intents';
1218 - $sql_intents_table = "CREATE TABLE $intents_table (
1219 - id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
1220 - intent_label VARCHAR(255) NOT NULL,
1221 - phrases TEXT NOT NULL,
1222 - embedding_vector LONGTEXT NOT NULL,
1223 - callback_function VARCHAR(255) NOT NULL,
1224 - similarity_threshold FLOAT DEFAULT 0.85,
1225 - enabled TINYINT(1) NOT NULL DEFAULT 1,
1226 - enabled_bots LONGTEXT DEFAULT NULL,
1227 - PRIMARY KEY (id)
1228 - ) $charset_collate;";
1229 -
1230 - // Individual Intent Phrases Table - each phrase gets its own embedding vector
1231 - $intent_phrases_table = $wpdb->prefix . 'mxchat_intent_phrases';
1232 - $sql_intent_phrases_table = "CREATE TABLE $intent_phrases_table (
1233 - id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
1234 - intent_id BIGINT(20) UNSIGNED NOT NULL,
1235 - phrase TEXT NOT NULL,
1236 - embedding_vector LONGTEXT NOT NULL,
1237 - created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
1238 - PRIMARY KEY (id),
1239 - KEY intent_id (intent_id)
1240 - ) $charset_collate;";
1241 -
1242 - require_once ABSPATH . 'wp-admin/includes/upgrade.php';
1243 -
1244 - // Create other tables
1245 - dbDelta($sql_system_prompt);
1246 - dbDelta($sql_intents_table);
1247 - dbDelta($sql_intent_phrases_table);
1248 -
1249 - // Create URL click tracking table
1250 - mxchat_create_url_clicks_table();
1251 -
1252 - // Create Pinecone roles table
1253 - mxchat_create_pinecone_roles_table();
1254 -
1255 - // NEW 2.5.2: Create queue processing tables
1256 - mxchat_create_queue_tables();
1257 -
1258 - // Create transcript translations table
1259 - mxchat_create_translations_table();
1260 -
1261 - // Create per-session satisfaction ratings table (v3.2.6)
1262 - mxchat_create_session_ratings_table();
1263 -
1264 - // Ensure additional columns in system prompt table
1265 - $existing_system_columns = $wpdb->get_results("SHOW COLUMNS FROM $system_prompt_table");
1266 - if (!empty($existing_system_columns)) {
1267 - $existing_system_column_names = array_column($existing_system_columns, 'Field');
1268 -
1269 - if (!in_array('embedding_vector', $existing_system_column_names)) {
1270 - $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN embedding_vector LONGTEXT");
1271 - }
1272 - if (!in_array('source_url', $existing_system_column_names)) {
1273 - $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN source_url TEXT DEFAULT NULL");
1274 - }
1275 - if (!in_array('role_restriction', $existing_system_column_names)) {
1276 - $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN role_restriction VARCHAR(50) DEFAULT 'public' AFTER source_url");
1277 - }
1278 - }
1279 -
1280 - // Set default thresholds for existing intents
1281 - $wpdb->query("UPDATE {$intents_table} SET similarity_threshold = 0.85 WHERE similarity_threshold IS NULL");
1282 -
1283 - // Ensure enabled column exists in intents table
1284 - $existing_intent_columns = $wpdb->get_results("SHOW COLUMNS FROM $intents_table");
1285 - if (!empty($existing_intent_columns)) {
1286 - $existing_intent_column_names = array_column($existing_intent_columns, 'Field');
1287 -
1288 - if (!in_array('enabled', $existing_intent_column_names)) {
1289 - $wpdb->query("ALTER TABLE $intents_table ADD COLUMN enabled TINYINT(1) NOT NULL DEFAULT 1");
1290 - }
1291 -
1292 - // Ensure enabled_bots column exists for existing installations
1293 - if (!in_array('enabled_bots', $existing_intent_column_names)) {
1294 - $wpdb->query("ALTER TABLE $intents_table ADD COLUMN enabled_bots LONGTEXT DEFAULT NULL AFTER enabled");
1295 -
1296 - // Set existing actions to work with default bot
1297 - $default_bots = json_encode(['default']);
1298 - $wpdb->query($wpdb->prepare(
1299 - "UPDATE {$intents_table} SET enabled_bots = %s WHERE enabled_bots IS NULL",
1300 - $default_bots
1301 - ));
1302 - }
1303 - }
1304 -
1305 - // Run migration for existing installations
1306 - mxchat_migrate_pinecone_roles_add_bot_id();
1307 -
1308 - // 3.2.4: Backfill active embedding model option (replaces 3.2.3 column-based tracking)
1309 - mxchat_backfill_active_embedding_model();
1310 -
1311 - // Setup cron jobs
1312 - mxchat_setup_cron_jobs();
1313 -
1314 - // Update version (stable base version — never the dev time()-suffixed one,
1315 - // or the check_for_update comparison would churn every request)
1316 - update_option('mxchat_plugin_version', MXCHAT_BASE_VERSION);
1317 -
1318 - //error_log("MxChat: Activation function completed");
1319 -}
1320 -
1321 -/**
1322 - * Setup cron jobs on plugin activation
1323 - */
1324 -function mxchat_setup_cron_jobs() {
1325 - // Clear any existing cron jobs first
1326 - wp_clear_scheduled_hook('mxchat_reset_rate_limits');
1327 -
1328 - // Check if WordPress cron is disabled
1329 - if (defined('DISABLE_WP_CRON') && DISABLE_WP_CRON) {
1330 - // Set flag to use fallback system
1331 - update_option('mxchat_use_fallback_rate_limits', true);
1332 - update_option('mxchat_next_rate_limit_check', time() + 3600);
1333 - // Deliberately NO early return (plan-bc08a6): transcript cleanup below
1334 - // must still be scheduled. DISABLE_WP_CRON only changes HOW cron events
1335 - // execute (a server-side runner hitting wp-cron.php instead of loopback
1336 - // spawns) — scheduling still just writes the cron option. The old early
1337 - // return here meant a deactivate/reactivate cycle on a DISABLE_WP_CRON
1338 - // site permanently lost the transcript cleanup event while the retention
1339 - // setting still claimed to be active.
1340 - } else {
1341 - // Schedule the rate limit reset cron job
1342 - $result = wp_schedule_event(time() + 300, 'hourly', 'mxchat_reset_rate_limits');
1343 -
1344 - if ($result === false) {
1345 - // Fallback if scheduling fails
1346 - update_option('mxchat_use_fallback_rate_limits', true);
1347 - update_option('mxchat_next_rate_limit_check', time() + 3600);
1348 - } else {
1349 - // Clear fallback flags if cron scheduling succeeded
1350 - delete_option('mxchat_use_fallback_rate_limits');
1351 - }
1352 - }
1353 -
1354 - // Schedule transcript cleanup if configured (bucket dropdown OR custom retention-days > 0)
1355 - $transcript_options = get_option('mxchat_transcripts_options', array());
1356 - $cleanup_interval = isset($transcript_options['mxchat_auto_delete_transcripts']) ? $transcript_options['mxchat_auto_delete_transcripts'] : 'never';
1357 - $custom_retention = isset($transcript_options['mxchat_retention_days']) ? (int) $transcript_options['mxchat_retention_days'] : 0;
1358 -
1359 - if ($cleanup_interval !== 'never' || $custom_retention > 0) {
1360 - // Check if not already scheduled
1361 - if (!wp_next_scheduled('mxchat_cleanup_old_transcripts')) {
1362 - // Schedule to run daily at 3 AM
1363 - $next_run = strtotime('tomorrow 3:00 AM');
1364 - wp_schedule_event($next_run, 'daily', 'mxchat_cleanup_old_transcripts');
1365 - }
1366 - }
1367 -}
1368 -
1369 -/**
1370 - * Clean up on plugin deactivation
1371 - */
1372 -function mxchat_deactivate() {
1373 - // Clear scheduled cron jobs
1374 - wp_clear_scheduled_hook('mxchat_reset_rate_limits');
1375 - wp_clear_scheduled_hook('mxchat_cleanup_old_transcripts');
1376 - wp_clear_scheduled_hook('mxchat_send_delayed_transcript');
1377 - wp_clear_scheduled_hook('mxchat_model_liveness_check');
1378 -
1379 - // Clear fallback options
1380 - delete_option('mxchat_use_fallback_rate_limits');
1381 - delete_option('mxchat_next_rate_limit_check');
1382 - delete_option('mxchat_fallback_check_interval');
1383 -
1384 - // NOTE: We do NOT delete queue tables on deactivation
1385 - // This preserves data if user accidentally deactivates the plugin
1386 -}
1387 -
1388 -/**
1389 - * Check if fallback rate limit cleanup is needed
1390 - */
1391 -function mxchat_check_fallback_rate_limits() {
1392 - $use_fallback = get_option('mxchat_use_fallback_rate_limits', false);
1393 -
1394 - if (!$use_fallback) {
1395 - return;
1396 - }
1397 -
1398 - $next_check = get_option('mxchat_next_rate_limit_check', 0);
1399 -
1400 - if (time() >= $next_check) {
1401 - // Reuse the bootstrap's integrator — mxchat_init() creates the global on
1402 - // plugins_loaded (before this init-priority-5 callback), so it's always set
1403 - // here. Constructing a second MxChat_Integrator just to call one method
1404 - // re-registers every hook the plugin has (ajax pairs, wp_footer loader,
1405 - // rest_api_init, admin_init guard) on a duplicate instance for the rest of
1406 - // the request. Defensive construction only if the global is somehow unset.
1407 - // NOTE: MxChat_Integrator::check_fallback_rate_limits() is a second
1408 - // implementation of this same check — if either changes, change both.
1409 - global $mxchat_integrator;
1410 - $integrator = ($mxchat_integrator instanceof MxChat_Integrator)
1411 - ? $mxchat_integrator
1412 - : (class_exists('MxChat_Integrator') ? new MxChat_Integrator() : null);
1413 - if ($integrator && method_exists($integrator, 'mxchat_reset_rate_limits')) {
1414 - $integrator->mxchat_reset_rate_limits();
1415 - update_option('mxchat_next_rate_limit_check', time() + 3600);
1416 - }
1417 - }
1418 -}
1419 -
1420 -/**
1421 - * Robust update checking with role restriction migration, model deprecation, and queue tables
1422 - * CRITICAL: This runs on EVERY page load to ensure tables exist
1423 - */
1424 -function mxchat_check_for_update() {
1425 - global $wpdb;
1426 -
1427 - try {
1428 - $current_version = get_option('mxchat_plugin_version', '0.0.0');
1429 - $plugin_version = MXCHAT_BASE_VERSION;
1430 -
1431 - // Always ensure critical tables exist (even if version matches)
1432 - // This handles manual table deletion or fresh installs
1433 - $chat_table = $wpdb->prefix . 'mxchat_chat_transcripts';
1434 - $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
1435 -
1436 - $sessions_table = $wpdb->prefix . 'mxchat_sessions';
1437 -
1438 - $chat_exists = $wpdb->get_var("SHOW TABLES LIKE '$chat_table'") === $chat_table;
1439 - $queue_exists = $wpdb->get_var("SHOW TABLES LIKE '$queue_table'") === $queue_table;
1440 - $sessions_exists = get_option('mxchat_session_store_ready') === '1'
1441 - || $wpdb->get_var("SHOW TABLES LIKE '$sessions_table'") === $sessions_table;
1442 -
1443 - if (!$chat_exists || !$queue_exists || !$sessions_exists) {
1444 - //error_log("MxChat: Critical tables missing, running activation");
1445 - mxchat_activate();
1446 - }
1447 -
1448 - // Version-specific migrations
1449 - if ($current_version !== $plugin_version) {
1450 - //error_log("MxChat: Version change detected: $current_version -> $plugin_version");
1451 -
1452 - // Run live agent update BEFORE updating the stored version
1453 - mxchat_handle_live_agent_update();
1454 -
1455 - // Run theme migration notice for 3.0.1 (AI theme CSS structure changes)
1456 - mxchat_handle_theme_migration_notice();
1457 -
1458 - // Run role restriction migration for 2.4.1
1459 - if (version_compare($current_version, '2.4.1', '<')) {
1460 - mxchat_add_role_restriction_column();
1461 - }
1462 -
1463 - // Run enabled_bots column migration for 2.4.4
1464 - if (version_compare($current_version, '2.4.4', '<')) {
1465 - mxchat_add_enabled_bots_column();
1466 - }
1467 -
1468 - // Run model migration for 2.5.1 (Claude deprecation)
1469 - if (version_compare($current_version, '2.5.1', '<')) {
1470 - mxchat_migrate_deprecated_models();
1471 - }
1472 -
1473 - // 2.5.2: Ensure queue tables exist and fix URL column sizes for all users upgrading to 2.5.2
1474 - if (version_compare($current_version, '2.5.2', '<')) {
1475 - mxchat_create_queue_tables();
1476 - mxchat_fix_url_column_size(); // NEW: Fix URL column size for long URLs
1477 - //error_log("MxChat: Queue tables created and URL columns updated for upgrade to 2.5.2");
1478 - }
1479 -
1480 - // 2.6.0: Ensure rag_context column exists for retrieved documents feature
1481 - if (version_compare($current_version, '2.6.0', '<')) {
1482 - $chat_table = $wpdb->prefix . 'mxchat_chat_transcripts';
1483 - mxchat_ensure_all_columns($chat_table);
1484 - //error_log("MxChat: rag_context column migration for 2.6.0");
1485 - }
1486 -
1487 - // 3.0.5: Migrate deprecated Gemini embedding model
1488 - if (version_compare($current_version, '3.0.5', '<')) {
1489 - mxchat_migrate_gemini_embedding_model();
1490 - }
1491 -
1492 - // 3.0.6: Migrate deprecated OpenAI and Claude models
1493 - if (version_compare($current_version, '3.0.6', '<')) {
1494 - mxchat_migrate_deprecated_models();
1495 - }
1496 -
1497 - // 3.1.2: Convert chat transcripts table to utf8mb4 for emoji support
1498 - if (version_compare($current_version, '3.1.2', '<')) {
1499 - mxchat_migrate_transcripts_charset();
1500 - }
1501 -
1502 - // 3.1.7: Clean up stale shared session email/name entries
1503 - if (version_compare($current_version, '3.1.7', '<')) {
1504 - delete_option('mxchat_email_null');
1505 - delete_option('mxchat_name_null');
1506 - }
1507 -
1508 - // 3.2.4: Backfill active embedding model option for the warning UI
1509 - // (replaces the per-row column tracking from 3.2.3, which was reverted)
1510 - if (version_compare($current_version, '3.2.4', '<')) {
1511 - mxchat_backfill_active_embedding_model();
1512 - }
1513 -
1514 - // 3.2.15: Migrate retired DeepSeek ids (deepseek-chat / deepseek-reasoner
1515 - // were shut off at the vendor on 2026-07-24). The function is idempotent —
1516 - // it only rewrites models on its deprecation lists.
1517 - if (version_compare($current_version, '3.2.15', '<')) {
1518 - mxchat_migrate_deprecated_models();
1519 - }
1520 -
1521 - // 3.2.16: Migrate OpenAI ids retiring 2026-08-10 (gpt-5.1-chat-latest /
1522 - // gpt-5.3-chat-latest → gpt-5.6-sol per OpenAI's deprecations page).
1523 - // Idempotent — only rewrites models on the deprecation lists (e46b8f).
1524 - if (version_compare($current_version, '3.2.16', '<')) {
1525 - mxchat_migrate_deprecated_models();
1526 - }
1527 -
1528 - // 3.2.17: Credential options must not autoload (af2400) — the two
1529 - // Pinecone-secret-holding rows were in alloptions, i.e. read into
1530 - // memory on every request including anonymous page views. Idempotent.
1531 - // Also carry the import modal's remembered ACF→PDF checkbox state
1532 - // into the new install-level option (11720c).
1533 - if (version_compare($current_version, '3.2.17', '<')) {
1534 - mxchat_fix_credential_option_autoload();
1535 - mxchat_migrate_acf_pdf_extraction_option();
1536 - }
1537 -
1538 - // 3.2.19: Claude Opus 4.1 retired Aug 5, 2026 — auto-move stranded
1539 - // sites (and the older tiers on the migration's lists) per the
1540 - // changelog's promise. Idempotent — only rewrites models on the
1541 - // deprecation lists. Without a gate at this release's version,
1542 - // nothing calls the migration for 3.2.18 upgraders (plan a5a598;
1543 - // the gate value must equal the version this block ships in).
1544 - if (version_compare($current_version, '3.2.19', '<')) {
1545 - mxchat_migrate_deprecated_models();
1546 - }
1547 -
1548 - // Run full activation to ensure everything is up to date
1549 - mxchat_activate();
1550 -
1551 - // Run migration functions
1552 - mxchat_migrate_live_agent_status();
1553 -
1554 - // (The 2.1.8 orphaned-history reconciliation sweep is gone —
1555 - // 3.2.19's mxchat_history_backlog_* drain supersedes it, and it
1556 - // self-arms without a version gate: plan 839c4c.)
1557 -
1558 - // Update version LAST
1559 - update_option('mxchat_plugin_version', $plugin_version);
1560 -
1561 - //error_log("MxChat: Updated from version $current_version to $plugin_version");
1562 - }
1563 -
1564 - } catch (Exception $e) {
1565 - //error_log('MxChat update error: ' . $e->getMessage());
1566 - // Don't update version if there was an error
1567 - }
1568 -}
1569 -
1570 -/**
1571 - * Credential options must never enter the autoloaded alloptions set.
1572 - * mxchat_prompts_options and mxchat_pinecone_addon_options can hold the
1573 - * Pinecone API secret; mxchat_options already stores its keys with autoload
1574 - * off and these two must match it. The filter covers every future
1575 - * add_option()/update_option() that creates the row — Settings API saves
1576 - * through options.php and WP-CLI included — on WP 6.6+; older cores are
1577 - * covered by the explicit autoload arguments at the plugin's own write
1578 - * sites plus the one-time migration below.
1579 - */
1580 -add_filter('wp_default_autoload_value', 'mxchat_credential_option_autoload_value', 10, 2);
1581 -function mxchat_credential_option_autoload_value($autoload, $option) {
1582 - if (in_array($option, array('mxchat_prompts_options', 'mxchat_pinecone_addon_options'), true)) {
1583 - return false;
1584 - }
1585 - return $autoload;
1586 -}
1587 -
1588 -/**
1589 - * One-time upgrade migration: flip the autoload flag on credential option
1590 - * rows that existing installs are already carrying autoloaded. Includes
1591 - * mxchat_adv_api_token (Advanced Content bearer token) — harmless no-op
1592 - * when that add-on is not installed, since missing rows simply don't match.
1593 - */
1594 -function mxchat_fix_credential_option_autoload() {
1595 - $keys = array('mxchat_prompts_options', 'mxchat_pinecone_addon_options', 'mxchat_adv_api_token');
1596 - if (function_exists('wp_set_option_autoload_values')) {
1597 - wp_set_option_autoload_values(array_fill_keys($keys, false));
1598 - return;
1599 - }
1600 - // Pre-WP-6.4 fallback: direct flip + cache invalidation.
1601 - global $wpdb;
1602 - $placeholders = implode(',', array_fill(0, count($keys), '%s'));
1603 - $wpdb->query($wpdb->prepare("UPDATE {$wpdb->options} SET autoload = 'no' WHERE option_name IN ($placeholders)", $keys));
1604 - wp_cache_delete('alloptions', 'options');
1605 - foreach ($keys as $key) {
1606 - wp_cache_delete($key, 'options');
1607 - }
1608 -}
1609 -
1610 -/**
1611 - * One-time carry of the import modal's remembered ACF→PDF checkbox state
1612 - * (mxchat_options['acf_pdf_extract_default'], written per-import until 3.2.16)
1613 - * into the new install-level option mxchat_acf_pdf_extraction (plan 11720c).
1614 - * Fresh installs and installs that never touched the checkbox default OFF,
1615 - * matching the setting's own "recommended only if…" guidance.
1616 - */
1617 -function mxchat_migrate_acf_pdf_extraction_option() {
1618 - if (get_option('mxchat_acf_pdf_extraction', null) !== null) {
1619 - return; // already set — never overwrite an owner's choice
1620 - }
1621 - $mxchat_options = get_option('mxchat_options', array());
1622 - if (is_array($mxchat_options) && array_key_exists('acf_pdf_extract_default', $mxchat_options)) {
1623 - update_option('mxchat_acf_pdf_extraction', !empty($mxchat_options['acf_pdf_extract_default']) ? '1' : '0', false);
1624 - unset($mxchat_options['acf_pdf_extract_default']);
1625 - update_option('mxchat_options', $mxchat_options);
1626 - }
1627 -}
1628 -
1629 -/**
1630 - * Ensure tables exist on every admin load for fresh installations
1631 - * This is a safety net for cases where activation hook doesn't fire
1632 - */
1633 -function mxchat_ensure_tables_exist() {
1634 - global $wpdb;
1635 -
1636 - // Only run for admin users to avoid performance impact
1637 - if (!current_user_can('administrator')) {
1638 - return;
1639 - }
1640 -
1641 - // Check if we've already verified tables in this session
1642 - static $tables_checked = false;
1643 - if ($tables_checked) {
1644 - return;
1645 - }
1646 - $tables_checked = true;
1647 -
1648 - $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
1649 - $queue_table = $wpdb->prefix . 'mxchat_processing_queue';
1650 -
1651 - $sessions_table = $wpdb->prefix . 'mxchat_sessions';
1652 -
1653 - $chat_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
1654 - $queue_exists = $wpdb->get_var("SHOW TABLES LIKE '$queue_table'") === $queue_table;
1655 - $sessions_exists = get_option('mxchat_session_store_ready') !== false
1656 - || $wpdb->get_var("SHOW TABLES LIKE '$sessions_table'") === $sessions_table;
1657 -
1658 - if (!$chat_exists || !$queue_exists || !$sessions_exists) {
1659 - //error_log("MxChat: Tables missing on admin load, running activation");
1660 - mxchat_activate();
1661 - }
1662 -}
1663 -
1664 -/**
1665 - * One-shot cleanup of legacy mxchat_history_<sid> option rows (plan 839c4c).
1666 - *
1667 - * 3.2.19 deduplicated per-session chat history into the transcripts table
1668 - * (which already held a superset of every option copy measured), so nothing
1669 - * writes these options any more — but an upgraded install still carries one
1670 - * per session, at up to 64 KB a row (462 rows measured on one production
1671 - * install). This drain replaces the old mxchat_cleanup_orphaned_chat_history()
1672 - * reconciliation sweep, which existed only because there were two copies to
1673 - * reconcile.
1674 - *
1675 - * b64b77 pattern throughout: an option_id bookmark that only moves forward
1676 - * (a crash mid-batch re-processes at most one batch), delete_option() per row
1677 - * so the object + notoptions caches stay coherent, batches drained off
1678 - * non-AJAX admin_init plus the session-store maintenance cron. Once the
1679 - * backlog is gone the state marks done and every later call is one cached
1680 - * option read.
1681 - */
1682 -function mxchat_history_backlog_state() {
1683 - // The state option name MUST NOT start with 'mxchat_history_' — the drain
1684 - // deletes everything matching that prefix, and a state option inside the
1685 - // pattern gets eaten by its own drain (caught by the 839c4c rig: batches
1686 - // ran 2,2,2,1 instead of 2,2,1 because the bookmark row was being deleted
1687 - // and re-created every pass).
1688 - $state = get_option('mxchat_legacy_history_cleanup', array());
1689 - if (!is_array($state)) {
1690 - $state = array();
1691 - }
1692 -
1693 - return wp_parse_args($state, array(
1694 - 'done' => false,
1695 - 'last_option_id' => 0,
1696 - 'deleted' => 0,
1697 - ));
1698 -}
1699 -
1700 -/**
1701 - * Delete one batch of legacy history options.
1702 - *
1703 - * @param int $batch Rows per pass — capped small; these can be 64 KB rows.
1704 - * @return int Option rows deleted in this pass.
1705 - */
1706 -function mxchat_history_backlog_batch($batch = 200) {
1707 - global $wpdb;
1708 -
1709 - $state = mxchat_history_backlog_state();
1710 - if (!empty($state['done'])) {
1711 - return 0;
1712 - }
1713 -
1714 - $batch = max(1, (int) $batch);
1715 -
1716 - $rows = $wpdb->get_results(
1717 - $wpdb->prepare(
1718 - "SELECT option_id, option_name FROM {$wpdb->options}
1719 - WHERE option_id > %d AND option_name LIKE %s
1720 - ORDER BY option_id ASC LIMIT %d",
1721 - (int) $state['last_option_id'],
1722 - $wpdb->esc_like('mxchat_history_') . '%',
1723 - $batch
1724 - ),
1725 - ARRAY_A
1726 - );
1727 -
1728 - if (empty($rows)) {
1729 - $state['done'] = true;
1730 - update_option('mxchat_legacy_history_cleanup', $state, 'no');
1731 - return 0;
1732 - }
1733 -
1734 - foreach ($rows as $row) {
1735 - $state['last_option_id'] = max((int) $state['last_option_id'], (int) $row['option_id']);
1736 - delete_option($row['option_name']);
1737 - $state['deleted'] = (int) $state['deleted'] + 1;
1738 - }
1739 -
1740 - if (count($rows) < $batch) {
1741 - $state['done'] = true;
1742 - }
1743 -
1744 - update_option('mxchat_legacy_history_cleanup', $state, 'no');
1745 -
1746 - return count($rows);
1747 -}
1748 -
1749 -/** One batch per admin page load until drained. */
1750 -function mxchat_history_backlog_drain() {
1751 - mxchat_history_backlog_batch();
1752 -}
1753 -
1754 -/** Cron leg: drain faster, same cap per batch. */
1755 -function mxchat_history_backlog_drain_cron() {
1756 - for ($i = 0; $i < 10; $i++) {
1757 - if (mxchat_history_backlog_batch() === 0) {
1758 - break;
1759 - }
1760 - }
1761 -}
1762 -
1763 -// wp_doing_ajax() guard is load-bearing, not defensive (b64b77's shipped-and-
1764 -// caught defect): admin-ajax.php fires admin_init too, and the chat widget's
1765 -// message endpoint is an admin-ajax action — without the guard an anonymous
1766 -// visitor would pay for a delete batch inside their own chat request.
1767 -if (!wp_doing_ajax()) {
1768 - add_action('admin_init', 'mxchat_history_backlog_drain', 21);
1769 -}
1770 -// Belt for installs whose admin is rarely visited: ride the session store's
1771 -// existing daily maintenance event rather than scheduling another.
1772 -add_action('mxchat_session_store_maintenance', 'mxchat_history_backlog_drain_cron');
1773 -
1774 -function mxchat_migrate_live_agent_status() {
1775 - $options = get_option('mxchat_options', []);
1776 -
1777 - // Check if live_agent_status exists
1778 - if (isset($options['live_agent_status'])) {
1779 - $current_status = $options['live_agent_status'];
1780 - $needs_update = false;
1781 -
1782 - // Convert to new format if needed
1783 - if ($current_status === 'online') {
1784 - $options['live_agent_status'] = 'on';
1785 - $needs_update = true;
1786 - } else if ($current_status === 'offline') {
1787 - $options['live_agent_status'] = 'off';
1788 - $needs_update = true;
1789 - } else if (!in_array($current_status, ['on', 'off'])) {
1790 - // Default to off for any unexpected values
1791 - $options['live_agent_status'] = 'off';
1792 - $needs_update = true;
1793 - }
1794 -
1795 - // Only update if needed
1796 - if ($needs_update) {
1797 - update_option('mxchat_options', $options);
1798 - }
1799 - } else {
1800 - // If status doesn't exist, set default to off
1801 - $options['live_agent_status'] = 'off';
1802 - update_option('mxchat_options', $options);
1803 - }
1804 -}
1805 -
1806 -function mxchat_handle_live_agent_update() {
1807 - // Get the CURRENT stored version (before it gets updated)
1808 - $current_version = get_option('mxchat_plugin_version', '0.0.0');
1809 - $new_version = '2.2.2';
1810 -
1811 - // Only run this once for the update to 2.2.2
1812 - $update_handled = get_option('mxchat_live_agent_update_2_2_2_handled', false);
1813 -
1814 - // Check if we're upgrading TO 2.2.2 and haven't handled this yet
1815 - if (version_compare($current_version, $new_version, '<') && !$update_handled) {
1816 - $options = get_option('mxchat_options', array());
1817 -
1818 - // Check if live agent was previously enabled
1819 - if (isset($options['live_agent_status']) && $options['live_agent_status'] === 'on') {
1820 - // Disable live agent
1821 - $options['live_agent_status'] = 'off';
1822 - update_option('mxchat_options', $options);
1823 -
1824 - // Set flag to show the notification banner
1825 - update_option('mxchat_show_live_agent_disabled_notice', true);
1826 - }
1827 -
1828 - // Mark this update as handled
1829 - update_option('mxchat_live_agent_update_2_2_2_handled', true);
1830 - }
1831 -}
1832 -
1833 -/**
1834 - * Handle theme migration notice for version 3.0.1
1835 - * Shows a dismissible notice to Pro users about migrating AI-generated themes
1836 - */
1837 -function mxchat_handle_theme_migration_notice() {
1838 - // Get the CURRENT stored version (before it gets updated)
1839 - $current_version = get_option('mxchat_plugin_version', '0.0.0');
1840 - $target_version = '3.0.1';
1841 -
1842 - // Only run this once for the update to 3.0.1
1843 - $update_handled = get_option('mxchat_theme_migration_update_3_0_1_handled', false);
1844 -
1845 - // Check if we're upgrading TO 3.0.1 and haven't handled this yet
1846 - if (version_compare($current_version, $target_version, '<') && !$update_handled) {
1847 - // Check if Pro is activated - only show to Pro users
1848 - $license_status = get_option('mxchat_license_status', 'inactive');
1849 - $is_pro = ($license_status === 'active');
1850 -
1851 - if ($is_pro) {
1852 - // Set flag to show the theme migration notification banner
1853 - update_option('mxchat_show_theme_migration_notice', true);
1854 - }
1855 -
1856 - // Mark this update as handled (whether Pro or not)
1857 - update_option('mxchat_theme_migration_update_3_0_1_handled', true);
1858 - }
1859 -}
1860 -
1861 -// Initialize plugin safely
1862 -function mxchat_init() {
1863 - // Include all class files first
1864 - mxchat_include_classes();
1865 -
1866 - // Run update check (this also ensures tables exist)
1867 - mxchat_check_for_update();
1868 -
1869 - // CRITICAL: Ensure tables exist on admin pages (safety net)
1870 - add_action('admin_init', 'mxchat_ensure_tables_exist', 1);
1871 -
1872 - // Add fallback rate limit check
1873 - add_action('init', 'mxchat_check_fallback_rate_limits', 5);
1874 -
1875 - // Add migration notice hook
1876 - add_action('admin_notices', 'mxchat_show_migration_notice');
1877 - add_action('admin_notices', 'mxchat_show_model_access_notice');
1878 -
1879 - // Initialize classes with error handling
1880 - try {
1881 - // Initialize admin classes
1882 - if (is_admin()) {
1883 - if (class_exists('MxChat_Knowledge_Manager')) {
1884 - $mxchat_knowledge_manager = new MxChat_Knowledge_Manager();
1885 -
1886 - if (class_exists('MxChat_Admin')) {
1887 - $mxchat_admin = new MxChat_Admin($mxchat_knowledge_manager);
1888 - }
1889 - }
1890 -
1891 - // Initialize meta box class
1892 - if (class_exists('MxChat_Meta_Box')) {
1893 - new MxChat_Meta_Box();
1894 - }
1895 -
1896 - }
1897 -
1898 - // Initialize content generator globally — it registers wp_head hook
1899 - // for frontend CSS injection, plus wp_ajax_ hooks for admin.
1900 - if (class_exists('MxChat_Content_Generator')) {
1901 - new MxChat_Content_Generator();
1902 - }
1903 -
1904 - // Initialize cache purge globally — settings writes can happen on any
1905 - // request type (admin screens, admin-ajax autosave, wp-cli), and the
1906 - // deferred-purge cron event fires on front-end requests.
1907 - if (class_exists('MxChat_Cache_Purge')) {
1908 - MxChat_Cache_Purge::init();
1909 - }
1910 -
1911 - // Initialize REST API globally — endpoints must be registered on
1912 - // every request (admin and frontend) so they're reachable via /wp-json/.
1913 - // Endpoints are auth-gated and locked until the site owner generates
1914 - // a token in MxChat → API Access.
1915 - if (class_exists('MxChat_Rest_Api')) {
1916 - new MxChat_Rest_Api();
1917 - }
1918 -
1919 - // Initialize public classes
1920 - if (class_exists('MxChat_Public')) {
1921 - $mxchat_public = new MxChat_Public();
1922 - }
1923 -
1924 - if (class_exists('MxChat_Integrator')) {
1925 - global $mxchat_integrator;
1926 - $mxchat_integrator = new MxChat_Integrator();
1927 - }
1928 -
1929 - } catch (Exception $e) {
1930 - //error_log('MxChat initialization error: ' . $e->getMessage());
1931 -
1932 - // Show admin notice if there's an error
1933 - if (is_admin()) {
1934 - add_action('admin_notices', function() use ($e) {
1935 - echo '<div class="notice notice-error"><p>';
1936 - echo '<strong>MxChat Error:</strong> Plugin initialization failed. ';
1937 - echo 'Please check error logs or contact support. Error: ' . esc_html($e->getMessage());
1938 - echo '</p></div>';
1939 - });
1940 - }
1941 - }
1942 -}
1943 -
1944 -// Run initialization on plugins_loaded
1945 -add_action('plugins_loaded', 'mxchat_init');
1946 -
1947 -// Run migration check on admin init (for auto-updates without reactivation)
1948 -add_action('admin_init', 'mxchat_check_and_run_migrations');
1949 -
1950 -/**
1951 - * Check and run migrations on admin init
1952 - * This ensures migrations run even when plugin is auto-updated
1953 - */
1954 -function mxchat_check_and_run_migrations() {
1955 - // Only run in admin and not on every request
1956 - static $checked = false;
1957 - if ($checked) {
1958 - return;
1959 - }
1960 - $checked = true;
1961 -
1962 - mxchat_migrate_pinecone_roles_add_bot_id();
1963 - mxchat_migrate_add_content_type_column();
1964 - mxchat_migrate_add_translations_table();
1965 - mxchat_migrate_add_session_ratings_table();
1966 -}
1967 -
1968 -/**
1969 - * Migration: Create per-session satisfaction ratings table (v3.2.6)
1970 - * For users upgrading from versions before 3.2.6
1971 - */
1972 -function mxchat_migrate_add_session_ratings_table() {
1973 - $migration_key = 'mxchat_session_ratings_table_created';
1974 - if (get_option($migration_key)) {
1975 - return;
1976 - }
1977 - mxchat_create_session_ratings_table();
1978 - update_option($migration_key, '3.2.6');
1979 -}
1980 -
1981 -/**
1982 - * Migration: Create transcript translations table (v3.0.4)
1983 - * For users upgrading from versions before 3.0.4
1984 - */
1985 -function mxchat_migrate_add_translations_table() {
1986 - $migration_key = 'mxchat_translations_table_created';
1987 -
1988 - // Check if migration already ran
1989 - if (get_option($migration_key)) {
1990 - return;
1991 - }
1992 -
1993 - // Create the translations table
1994 - mxchat_create_translations_table();
1995 -
1996 - // Mark migration as complete
1997 - update_option($migration_key, '3.0.4');
1998 -}
1999 -
2000 -/**
2001 - * Migration: Update deprecated Gemini embedding model (v3.0.5)
2002 - * Updates gemini-embedding-exp-03-07 to gemini-embedding-001 for users who had it selected
2003 - */
2004 -function mxchat_migrate_gemini_embedding_model() {
2005 - $options = get_option('mxchat_options', array());
2006 -
2007 - if (isset($options['embedding_model']) && $options['embedding_model'] === 'gemini-embedding-exp-03-07') {
2008 - $options['embedding_model'] = 'gemini-embedding-001';
2009 - update_option('mxchat_options', $options);
2010 - }
2011 -}
2012 -
2013 -// Register activation hook
2014 -register_activation_hook(__FILE__, 'mxchat_activate');
2015 -
2016 -// Add cron schedule
2017 -add_filter('cron_schedules', function($schedules) {
2018 - $schedules['one_minute'] = array(
2019 - 'interval' => 60,
2020 - 'display' => 'Every Minute'
2021 - );
2022 - return $schedules;
2023 -});
2024 -
2025 -// Register deactivation hook
2026 -register_deactivation_hook(__FILE__, 'mxchat_deactivate');
2027 -
2028 -/**
2029 - * Per-session satisfaction rating: AJAX save handler (v3.2.6).
2030 - * Records one 👍/👎 + optional feedback per chat session. The UNIQUE KEY on
2031 - * session_id makes this naturally idempotent — only the first rating per
2032 - * session is stored; duplicate POSTs are silent no-ops.
2033 - */
2034 -function mxchat_save_session_rating() {
2035 - global $wpdb;
2036 -
2037 - $session_id = isset($_POST['session_id']) ? MxChat_Utils::sanitize_session_id(wp_unslash($_POST['session_id'])) : '';
2038 - $bot_id = isset($_POST['bot_id']) ? sanitize_text_field(wp_unslash($_POST['bot_id'])) : 'default';
2039 - $rating_raw = isset($_POST['rating']) ? (int) $_POST['rating'] : 0;
2040 - $feedback = isset($_POST['feedback']) ? sanitize_textarea_field(wp_unslash($_POST['feedback'])) : '';
2041 -
2042 - if ($session_id === '' || ($rating_raw !== 1 && $rating_raw !== -1)) {
2043 - wp_send_json_error(array('message' => 'invalid_input'), 400);
2044 - }
2045 -
2046 - if (strlen($feedback) > 1000) {
2047 - $feedback = substr($feedback, 0, 1000);
2048 - }
2049 -
2050 - $table_name = $wpdb->prefix . 'mxchat_session_ratings';
2051 - $existing = $wpdb->get_var($wpdb->prepare(
2052 - "SELECT id FROM $table_name WHERE session_id = %s LIMIT 1",
2053 - $session_id
2054 - ));
2055 -
2056 - if ($existing) {
2057 - if ($feedback !== '') {
2058 - $wpdb->update(
2059 - $table_name,
2060 - array('rating_feedback' => $feedback),
2061 - array('id' => (int) $existing),
2062 - array('%s'),
2063 - array('%d')
2064 - );
2065 - }
2066 - wp_send_json_success(array('updated' => true));
2067 - }
2068 -
2069 - $inserted = $wpdb->insert(
2070 - $table_name,
2071 - array(
2072 - 'session_id' => $session_id,
2073 - 'bot_id' => $bot_id !== '' ? $bot_id : 'default',
2074 - 'rating_value' => $rating_raw,
2075 - 'rating_feedback' => $feedback !== '' ? $feedback : null,
2076 - 'created_at' => current_time('mysql'),
2077 - ),
2078 - array('%s', '%s', '%d', '%s', '%s')
2079 - );
2080 -
2081 - if ($inserted === false) {
2082 - wp_send_json_error(array('message' => 'db_insert_failed'), 500);
2083 - }
2084 -
2085 - wp_send_json_success(array('saved' => true));
2086 -}
2087 -add_action('wp_ajax_mxchat_save_rating', 'mxchat_save_session_rating');
2088 -add_action('wp_ajax_nopriv_mxchat_save_rating', 'mxchat_save_session_rating');
1 +<?php
2 +/**
3 + * Plugin Name: MxChat
4 + * Plugin URI: https://mxchat.ai/
5 + * Description: AI chatbot for WordPress with OpenAI, Claude, xAI, DeepSeek, live agent, PDF uploads, WooCommerce, and training on website data.
6 + * Version: 2.4.9
7 + * Author: MxChat
8 + * Author URI: https://mxchat.ai
9 + * License: GPLv2 or later
10 + * License URI: https://www.gnu.org/licenses/gpl-2.0.html
11 + * Text Domain: mxchat
12 + * Domain Path: /languages
13 + */
14 +
15 +if (!defined('ABSPATH')) {
16 + exit; // Exit if accessed directly.
17 +}
18 +
19 +// Define plugin version constant for asset versioning
20 +define('MXCHAT_VERSION', '2.4.9');
21 +
22 +function mxchat_load_textdomain() {
23 + load_plugin_textdomain('mxchat', false, dirname(plugin_basename(__FILE__)) . '/languages');
24 +}
25 +add_action('plugins_loaded', 'mxchat_load_textdomain');
26 +
27 +// Include classes with error handling
28 +function mxchat_include_classes() {
29 + $class_files = array(
30 + 'includes/class-mxchat-integrator.php',
31 + 'includes/class-mxchat-admin.php',
32 + 'includes/class-mxchat-public.php',
33 + 'includes/class-mxchat-utils.php',
34 + 'includes/class-mxchat-user.php',
35 + 'includes/class-mxchat-meta-box.php',
36 + 'includes/pdf-parser/alt_autoload.php',
37 + 'includes/class-mxchat-word-handler.php',
38 + 'admin/class-ajax-handler.php',
39 + 'admin/class-pinecone-manager.php',
40 + 'admin/class-knowledge-manager.php'
41 + );
42 +
43 + foreach ($class_files as $file) {
44 + $file_path = plugin_dir_path(__FILE__) . $file;
45 + if (file_exists($file_path)) {
46 + require_once $file_path;
47 + } else {
48 + //error_log('MxChat: Missing class file - ' . $file);
49 + }
50 + }
51 +}
52 +
53 +/**
54 + * Create URL click tracking table
55 + */
56 +function mxchat_create_url_clicks_table() {
57 + global $wpdb;
58 +
59 + $table_name = $wpdb->prefix . 'mxchat_url_clicks';
60 +
61 + $charset_collate = $wpdb->get_charset_collate();
62 +
63 + $sql = "CREATE TABLE $table_name (
64 + id mediumint(9) NOT NULL AUTO_INCREMENT,
65 + session_id varchar(100) NOT NULL,
66 + clicked_url text NOT NULL,
67 + message_context text,
68 + click_timestamp datetime DEFAULT CURRENT_TIMESTAMP,
69 + user_ip varchar(45),
70 + user_agent text,
71 + PRIMARY KEY (id),
72 + KEY session_id (session_id),
73 + KEY click_timestamp (click_timestamp)
74 + ) $charset_collate;";
75 +
76 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
77 + dbDelta($sql);
78 +}
79 +
80 +/**
81 + * FIXED: Robust table creation and column management
82 + */
83 +function mxchat_create_chat_transcripts_table() {
84 + global $wpdb;
85 +
86 + $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
87 + $charset_collate = $wpdb->get_charset_collate();
88 +
89 + // Create table with ALL columns including user_name from the start
90 + $sql = "CREATE TABLE $table_name (
91 + id MEDIUMINT(9) NOT NULL AUTO_INCREMENT,
92 + user_id MEDIUMINT(9) DEFAULT 0,
93 + session_id VARCHAR(255) NOT NULL,
94 + role VARCHAR(255) NOT NULL,
95 + message TEXT NOT NULL,
96 + user_email VARCHAR(255) DEFAULT NULL,
97 + user_name VARCHAR(100) DEFAULT NULL,
98 + user_identifier VARCHAR(255) DEFAULT NULL,
99 + originating_page_url TEXT DEFAULT NULL,
100 + originating_page_title VARCHAR(500) DEFAULT NULL,
101 + timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
102 + PRIMARY KEY (id),
103 + KEY session_id (session_id),
104 + KEY user_email (user_email),
105 + KEY timestamp (timestamp)
106 + ) $charset_collate;";
107 +
108 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
109 + $result = dbDelta($sql);
110 +
111 + // Log the result for debugging
112 + if (empty($result)) {
113 + //error_log("MxChat: dbDelta returned empty result for chat transcripts table");
114 + } else {
115 + //error_log("MxChat: dbDelta result: " . print_r($result, true));
116 + }
117 +
118 + // IMPORTANT: Ensure all columns exist for existing installations
119 + mxchat_ensure_all_columns($table_name);
120 +}
121 +
122 +/**
123 + * Ensure all required columns exist (for upgrades)
124 + */
125 +function mxchat_ensure_all_columns($table_name) {
126 + global $wpdb;
127 +
128 + // First check if table exists
129 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
130 + if (!$table_exists) {
131 + //error_log("MxChat: Table $table_name does not exist, cannot add columns");
132 + return;
133 + }
134 +
135 + // Define all required columns and their types
136 + $required_columns = [
137 + 'user_identifier' => 'VARCHAR(255) DEFAULT NULL',
138 + 'user_email' => 'VARCHAR(255) DEFAULT NULL',
139 + 'user_name' => 'VARCHAR(100) DEFAULT NULL',
140 + 'originating_page_url' => 'TEXT DEFAULT NULL',
141 + 'originating_page_title' => 'VARCHAR(500) DEFAULT NULL'
142 + ];
143 +
144 + // Get existing columns
145 + $existing_columns = $wpdb->get_results("SHOW COLUMNS FROM $table_name");
146 + if (empty($existing_columns)) {
147 + //error_log("MxChat: Could not get columns for table $table_name");
148 + return;
149 + }
150 +
151 + $existing_column_names = array_column($existing_columns, 'Field');
152 +
153 + // Add missing columns
154 + foreach ($required_columns as $column_name => $column_definition) {
155 + if (!in_array($column_name, $existing_column_names)) {
156 + $alter_sql = "ALTER TABLE $table_name ADD COLUMN $column_name $column_definition";
157 + $result = $wpdb->query($alter_sql);
158 +
159 + if ($result === false) {
160 + //error_log("MxChat: Failed to add column $column_name to $table_name. Error: " . $wpdb->last_error);
161 + } else {
162 + //error_log("MxChat: Successfully added column $column_name to $table_name");
163 + }
164 + }
165 + }
166 +}
167 +
168 +/**
169 + * Add role restriction column to knowledge base table
170 + */
171 +function mxchat_add_role_restriction_column() {
172 + global $wpdb;
173 + $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
174 +
175 + // Check if table exists first
176 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
177 + if (!$table_exists) {
178 + //error_log("MxChat: System prompt content table does not exist, cannot add role_restriction column");
179 + return;
180 + }
181 +
182 + // Check if column already exists
183 + $column_exists = $wpdb->get_results(
184 + $wpdb->prepare(
185 + "SHOW COLUMNS FROM {$table_name} LIKE %s",
186 + 'role_restriction'
187 + )
188 + );
189 +
190 + if (empty($column_exists)) {
191 + $alter_sql = "ALTER TABLE {$table_name} ADD COLUMN role_restriction VARCHAR(50) DEFAULT 'public' AFTER source_url";
192 + $result = $wpdb->query($alter_sql);
193 +
194 + if ($result === false) {
195 + //error_log("MxChat: Failed to add role_restriction column. Error: " . $wpdb->last_error);
196 + } else {
197 + //error_log("MxChat: Successfully added role_restriction column");
198 +
199 + // Set all existing records to 'public' (everyone can access)
200 + $update_result = $wpdb->query(
201 + "UPDATE {$table_name}
202 + SET role_restriction = 'public'
203 + WHERE role_restriction IS NULL OR role_restriction = ''"
204 + );
205 +
206 + if ($update_result !== false) {
207 + //error_log("MxChat: Updated {$update_result} existing records to public access");
208 + }
209 + }
210 + }
211 +}
212 +
213 +/**
214 + * NEW: Add enabled_bots column to intents table for multi-bot action filtering
215 + */
216 +function mxchat_add_enabled_bots_column() {
217 + global $wpdb;
218 + $table_name = $wpdb->prefix . 'mxchat_intents';
219 +
220 + // Check if table exists first
221 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
222 + if (!$table_exists) {
223 + //error_log("MxChat: Intents table does not exist, cannot add enabled_bots column");
224 + return;
225 + }
226 +
227 + // Check if column already exists
228 + $column_exists = $wpdb->get_results(
229 + $wpdb->prepare(
230 + "SHOW COLUMNS FROM {$table_name} LIKE %s",
231 + 'enabled_bots'
232 + )
233 + );
234 +
235 + if (empty($column_exists)) {
236 + $alter_sql = "ALTER TABLE {$table_name} ADD COLUMN enabled_bots LONGTEXT DEFAULT NULL AFTER enabled";
237 + $result = $wpdb->query($alter_sql);
238 +
239 + if ($result === false) {
240 + //error_log("MxChat: Failed to add enabled_bots column. Error: " . $wpdb->last_error);
241 + } else {
242 + //error_log("MxChat: Successfully added enabled_bots column");
243 +
244 + // Set all existing actions to work with 'default' bot for backward compatibility
245 + $default_bots = json_encode(['default']);
246 + $update_result = $wpdb->query(
247 + $wpdb->prepare(
248 + "UPDATE {$table_name}
249 + SET enabled_bots = %s
250 + WHERE enabled_bots IS NULL OR enabled_bots = ''",
251 + $default_bots
252 + )
253 + );
254 +
255 + if ($update_result !== false) {
256 + //error_log("MxChat: Updated {$update_result} existing actions to work with default bot");
257 + }
258 + }
259 + }
260 +}
261 +
262 +/**
263 + * Create Pinecone role restrictions table
264 + */
265 +function mxchat_create_pinecone_roles_table() {
266 + global $wpdb;
267 +
268 + $table_name = $wpdb->prefix . 'mxchat_pinecone_roles';
269 + $charset_collate = $wpdb->get_charset_collate();
270 +
271 + $sql = "CREATE TABLE $table_name (
272 + id mediumint(9) NOT NULL AUTO_INCREMENT,
273 + vector_id varchar(255) NOT NULL,
274 + source_url text,
275 + role_restriction varchar(50) DEFAULT 'public',
276 + updated_at timestamp DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
277 + PRIMARY KEY (id),
278 + UNIQUE KEY vector_id (vector_id),
279 + KEY role_restriction (role_restriction)
280 + ) $charset_collate;";
281 +
282 + require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
283 + dbDelta($sql);
284 +}
285 +
286 +function mxchat_activate() {
287 + global $wpdb;
288 + $charset_collate = $wpdb->get_charset_collate();
289 +
290 + //error_log("MxChat: Running activation function");
291 +
292 + // Create chat transcripts table with improved function
293 + mxchat_create_chat_transcripts_table();
294 +
295 + // System Prompt Content Table
296 + $system_prompt_table = $wpdb->prefix . 'mxchat_system_prompt_content';
297 + $sql_system_prompt = "CREATE TABLE $system_prompt_table (
298 + id MEDIUMINT(9) NOT NULL AUTO_INCREMENT,
299 + url VARCHAR(255) NOT NULL,
300 + article_content LONGTEXT NOT NULL,
301 + embedding_vector LONGTEXT,
302 + source_url VARCHAR(255) DEFAULT NULL,
303 + role_restriction VARCHAR(50) DEFAULT 'public',
304 + timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
305 + PRIMARY KEY (id)
306 + ) $charset_collate;";
307 +
308 + // Intents Table - NOW INCLUDES enabled_bots column from the start
309 + $intents_table = $wpdb->prefix . 'mxchat_intents';
310 + $sql_intents_table = "CREATE TABLE $intents_table (
311 + id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
312 + intent_label VARCHAR(255) NOT NULL,
313 + phrases TEXT NOT NULL,
314 + embedding_vector LONGTEXT NOT NULL,
315 + callback_function VARCHAR(255) NOT NULL,
316 + similarity_threshold FLOAT DEFAULT 0.85,
317 + enabled TINYINT(1) NOT NULL DEFAULT 1,
318 + enabled_bots LONGTEXT DEFAULT NULL,
319 + PRIMARY KEY (id)
320 + ) $charset_collate;";
321 +
322 + require_once ABSPATH . 'wp-admin/includes/upgrade.php';
323 +
324 + // Create other tables
325 + dbDelta($sql_system_prompt);
326 + dbDelta($sql_intents_table);
327 +
328 + // Create URL click tracking table
329 + mxchat_create_url_clicks_table();
330 +
331 + //Create Pinecone roles table
332 + mxchat_create_pinecone_roles_table();
333 +
334 + // Ensure additional columns in system prompt table
335 + $existing_system_columns = $wpdb->get_results("SHOW COLUMNS FROM $system_prompt_table");
336 + if (!empty($existing_system_columns)) {
337 + $existing_system_column_names = array_column($existing_system_columns, 'Field');
338 +
339 + if (!in_array('embedding_vector', $existing_system_column_names)) {
340 + $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN embedding_vector LONGTEXT");
341 + }
342 + if (!in_array('source_url', $existing_system_column_names)) {
343 + $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN source_url VARCHAR(255) DEFAULT NULL");
344 + }
345 + if (!in_array('role_restriction', $existing_system_column_names)) {
346 + $wpdb->query("ALTER TABLE $system_prompt_table ADD COLUMN role_restriction VARCHAR(50) DEFAULT 'public' AFTER source_url");
347 + }
348 + }
349 +
350 + // Set default thresholds for existing intents
351 + $wpdb->query("UPDATE {$intents_table} SET similarity_threshold = 0.85 WHERE similarity_threshold IS NULL");
352 +
353 + // Ensure enabled column exists in intents table
354 + $existing_intent_columns = $wpdb->get_results("SHOW COLUMNS FROM $intents_table");
355 + if (!empty($existing_intent_columns)) {
356 + $existing_intent_column_names = array_column($existing_intent_columns, 'Field');
357 +
358 + if (!in_array('enabled', $existing_intent_column_names)) {
359 + $wpdb->query("ALTER TABLE $intents_table ADD COLUMN enabled TINYINT(1) NOT NULL DEFAULT 1");
360 + }
361 +
362 + // NEW: Ensure enabled_bots column exists for existing installations
363 + if (!in_array('enabled_bots', $existing_intent_column_names)) {
364 + $wpdb->query("ALTER TABLE $intents_table ADD COLUMN enabled_bots LONGTEXT DEFAULT NULL AFTER enabled");
365 +
366 + // Set existing actions to work with default bot
367 + $default_bots = json_encode(['default']);
368 + $wpdb->query($wpdb->prepare(
369 + "UPDATE {$intents_table} SET enabled_bots = %s WHERE enabled_bots IS NULL",
370 + $default_bots
371 + ));
372 + }
373 + }
374 +
375 + // Setup cron jobs
376 + mxchat_setup_cron_jobs();
377 +
378 + // Update version
379 + update_option('mxchat_plugin_version', MXCHAT_VERSION);
380 +
381 + //error_log("MxChat: Activation function completed");
382 +}
383 +
384 +/**
385 + * Setup cron jobs on plugin activation
386 + */
387 +function mxchat_setup_cron_jobs() {
388 + // Clear any existing cron jobs first
389 + wp_clear_scheduled_hook('mxchat_reset_rate_limits');
390 +
391 + // Check if WordPress cron is disabled
392 + if (defined('DISABLE_WP_CRON') && DISABLE_WP_CRON) {
393 + // Set flag to use fallback system
394 + update_option('mxchat_use_fallback_rate_limits', true);
395 + update_option('mxchat_next_rate_limit_check', time() + 3600);
396 + return;
397 + }
398 +
399 + // Schedule the rate limit reset cron job
400 + $result = wp_schedule_event(time() + 300, 'hourly', 'mxchat_reset_rate_limits');
401 +
402 + if ($result === false) {
403 + // Fallback if scheduling fails
404 + update_option('mxchat_use_fallback_rate_limits', true);
405 + update_option('mxchat_next_rate_limit_check', time() + 3600);
406 + } else {
407 + // Clear fallback flags if cron scheduling succeeded
408 + delete_option('mxchat_use_fallback_rate_limits');
409 + }
410 +}
411 +
412 +/**
413 + * Clean up on plugin deactivation
414 + */
415 +function mxchat_deactivate() {
416 + // Clear scheduled cron jobs
417 + wp_clear_scheduled_hook('mxchat_reset_rate_limits');
418 +
419 + // Clear fallback options
420 + delete_option('mxchat_use_fallback_rate_limits');
421 + delete_option('mxchat_next_rate_limit_check');
422 + delete_option('mxchat_fallback_check_interval');
423 +}
424 +
425 +/**
426 + * Check if fallback rate limit cleanup is needed
427 + */
428 +function mxchat_check_fallback_rate_limits() {
429 + $use_fallback = get_option('mxchat_use_fallback_rate_limits', false);
430 +
431 + if (!$use_fallback) {
432 + return;
433 + }
434 +
435 + $next_check = get_option('mxchat_next_rate_limit_check', 0);
436 +
437 + if (time() >= $next_check) {
438 + // Only run reset if the MxChat_Integrator class exists
439 + if (class_exists('MxChat_Integrator')) {
440 + $integrator = new MxChat_Integrator();
441 + if (method_exists($integrator, 'mxchat_reset_rate_limits')) {
442 + $integrator->mxchat_reset_rate_limits();
443 + update_option('mxchat_next_rate_limit_check', time() + 3600);
444 + }
445 + }
446 + }
447 +}
448 +
449 +/**
450 + * Robust update checking with role restriction migration
451 + */
452 +function mxchat_check_for_update() {
453 + global $wpdb; // CRITICAL: Declare this at the top
454 +
455 + try {
456 + $current_version = get_option('mxchat_plugin_version', '0.0.0');
457 + $plugin_version = MXCHAT_VERSION;
458 +
459 + // Always run activation to ensure tables exist (safe for existing installations)
460 + if ($current_version !== $plugin_version) {
461 + //error_log("MxChat: Version change detected: $current_version -> $plugin_version");
462 +
463 + // Run live agent update BEFORE updating the stored version
464 + mxchat_handle_live_agent_update();
465 +
466 + //Run role restriction migration for 2.4.1
467 + if (version_compare($current_version, '2.4.1', '<')) {
468 + mxchat_add_role_restriction_column();
469 + }
470 +
471 + // NEW: Run enabled_bots column migration for 2.4.4
472 + if (version_compare($current_version, '2.4.4', '<')) {
473 + mxchat_add_enabled_bots_column();
474 + }
475 +
476 + // Run activation (this will create/update all tables and columns)
477 + mxchat_activate();
478 +
479 + // Run migration functions
480 + mxchat_migrate_live_agent_status();
481 +
482 + // Add the cleanup function for version 2.1.8
483 + if (version_compare($current_version, '2.1.8', '<')) {
484 + $deleted = mxchat_cleanup_orphaned_chat_history();
485 + }
486 +
487 + // Update version LAST
488 + update_option('mxchat_plugin_version', $plugin_version);
489 +
490 + //error_log("MxChat: Updated from version $current_version to $plugin_version");
491 + }
492 +
493 + // CRITICAL: Always ensure tables exist, even if version matches
494 + // This handles cases where tables were manually deleted
495 + $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
496 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
497 +
498 + if (!$table_exists) {
499 + //error_log("MxChat: Chat transcripts table missing, recreating...");
500 + mxchat_activate(); // Run full activation instead of just table creation
501 + }
502 +
503 + } catch (Exception $e) {
504 + //error_log('MxChat update error: ' . $e->getMessage());
505 + // Don't update version if there was an error
506 + }
507 +}
508 +
509 +/**
510 + * Ensure tables exist on every load for fresh installations
511 + */
512 +function mxchat_ensure_tables_exist() {
513 + global $wpdb;
514 +
515 + // Only run for admin users to avoid performance impact
516 + if (!current_user_can('administrator')) {
517 + return;
518 + }
519 +
520 + $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
521 + $table_exists = $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
522 +
523 + if (!$table_exists) {
524 + //error_log("MxChat: Tables missing on admin load, running activation");
525 + mxchat_activate();
526 + }
527 +}
528 +
529 +/**
530 + * Clean up orphaned chat history options from the wp_options table
531 + * @return int Number of options deleted
532 + */
533 +function mxchat_cleanup_orphaned_chat_history() {
534 + global $wpdb;
535 + $count = 0;
536 +
537 + // Get all option keys that match our pattern
538 + $history_options = $wpdb->get_results(
539 + "SELECT option_name FROM {$wpdb->options}
540 + WHERE option_name LIKE 'mxchat_history_%'"
541 + );
542 +
543 + if (!empty($history_options)) {
544 + foreach ($history_options as $option) {
545 + // Extract the session ID from the option name
546 + $session_id = str_replace('mxchat_history_', '', $option->option_name);
547 +
548 + // Check if this session still exists in the custom table
549 + $table_name = $wpdb->prefix . 'mxchat_chat_transcripts';
550 + $exists = $wpdb->get_var(
551 + $wpdb->prepare(
552 + "SELECT COUNT(*) FROM {$table_name} WHERE session_id = %s",
553 + $session_id
554 + )
555 + );
556 +
557 + // If session doesn't exist in the main table, delete the option
558 + if ($exists == 0) {
559 + delete_option($option->option_name);
560 + // Also delete related metadata
561 + delete_option("mxchat_email_{$session_id}");
562 + delete_option("mxchat_name_{$session_id}");
563 + delete_option("mxchat_agent_name_{$session_id}");
564 + $count++;
565 + }
566 + }
567 + }
568 +
569 + return $count;
570 +}
571 +
572 +function mxchat_migrate_live_agent_status() {
573 + $options = get_option('mxchat_options', []);
574 +
575 + // Check if live_agent_status exists
576 + if (isset($options['live_agent_status'])) {
577 + $current_status = $options['live_agent_status'];
578 + $needs_update = false;
579 +
580 + // Convert to new format if needed
581 + if ($current_status === 'online') {
582 + $options['live_agent_status'] = 'on';
583 + $needs_update = true;
584 + } else if ($current_status === 'offline') {
585 + $options['live_agent_status'] = 'off';
586 + $needs_update = true;
587 + } else if (!in_array($current_status, ['on', 'off'])) {
588 + // Default to off for any unexpected values
589 + $options['live_agent_status'] = 'off';
590 + $needs_update = true;
591 + }
592 +
593 + // Only update if needed
594 + if ($needs_update) {
595 + update_option('mxchat_options', $options);
596 + }
597 + } else {
598 + // If status doesn't exist, set default to off
599 + $options['live_agent_status'] = 'off';
600 + update_option('mxchat_options', $options);
601 + }
602 +}
603 +
604 +function mxchat_handle_live_agent_update() {
605 + // Get the CURRENT stored version (before it gets updated)
606 + $current_version = get_option('mxchat_plugin_version', '0.0.0');
607 + $new_version = '2.2.2';
608 +
609 + // Only run this once for the update to 2.2.2
610 + $update_handled = get_option('mxchat_live_agent_update_2_2_2_handled', false);
611 +
612 + // Check if we're upgrading TO 2.2.2 and haven't handled this yet
613 + if (version_compare($current_version, $new_version, '<') && !$update_handled) {
614 + $options = get_option('mxchat_options', array());
615 +
616 + // Check if live agent was previously enabled
617 + if (isset($options['live_agent_status']) && $options['live_agent_status'] === 'on') {
618 + // Disable live agent
619 + $options['live_agent_status'] = 'off';
620 + update_option('mxchat_options', $options);
621 +
622 + // Set flag to show the notification banner
623 + update_option('mxchat_show_live_agent_disabled_notice', true);
624 + }
625 +
626 + // Mark this update as handled
627 + update_option('mxchat_live_agent_update_2_2_2_handled', true);
628 + }
629 +}
630 +
631 +// Initialize plugin safely
632 +function mxchat_init() {
633 + // Include all class files first
634 + mxchat_include_classes();
635 +
636 + // Run update check
637 + mxchat_check_for_update();
638 +
639 + // CRITICAL: Ensure tables exist (for fresh installations that don't trigger activation hook)
640 + add_action('admin_init', 'mxchat_ensure_tables_exist', 1);
641 +
642 + // Add fallback rate limit check
643 + add_action('init', 'mxchat_check_fallback_rate_limits', 5);
644 +
645 + // Initialize classes with error handling
646 + try {
647 + // Initialize admin classes
648 + if (is_admin()) {
649 + if (class_exists('MxChat_Knowledge_Manager')) {
650 + $mxchat_knowledge_manager = new MxChat_Knowledge_Manager();
651 +
652 + if (class_exists('MxChat_Admin')) {
653 + $mxchat_admin = new MxChat_Admin($mxchat_knowledge_manager);
654 + }
655 + }
656 +
657 + // Initialize meta box class
658 + if (class_exists('MxChat_Meta_Box')) {
659 + new MxChat_Meta_Box();
660 + }
661 + }
662 +
663 + // Initialize public classes
664 + if (class_exists('MxChat_Public')) {
665 + $mxchat_public = new MxChat_Public();
666 + }
667 +
668 + if (class_exists('MxChat_Integrator')) {
669 + $mxchat_integrator = new MxChat_Integrator();
670 + }
671 +
672 + } catch (Exception $e) {
673 + //error_log('MxChat initialization error: ' . $e->getMessage());
674 +
675 + // Show admin notice if there's an error
676 + if (is_admin()) {
677 + add_action('admin_notices', function() use ($e) {
678 + echo '<div class="notice notice-error"><p>';
679 + echo '<strong>MxChat Error:</strong> Plugin initialization failed. ';
680 + echo 'Please check error logs or contact support. Error: ' . esc_html($e->getMessage());
681 + echo '</p></div>';
682 + });
683 + }
684 + }
685 +}
686 +
687 +// Run initialization on plugins_loaded
688 +add_action('plugins_loaded', 'mxchat_init');
689 +
690 +// Register activation hook
691 +register_activation_hook(__FILE__, 'mxchat_activate');
692 +
693 +// Add cron schedule
694 +add_filter('cron_schedules', function($schedules) {
695 + $schedules['one_minute'] = array(
696 + 'interval' => 60,
697 + 'display' => 'Every Minute'
698 + );
699 + return $schedules;
700 +});
701 +
702 +// Register deactivation hook
703 +register_deactivation_hook(__FILE__, 'mxchat_deactivate');