mxchat-basic / admin / class-ajax-handler.php

class-ajax-handler.php in MxChat – AI Chatbot & Content Generation for WordPress 3.2.8, at admin/class-ajax-handler.php

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1	<?php
2	/**
3	* File: admin/class-ajax-handler.php
4	*
5	* Handles all AJAX requests for MxChat admin functionality
6	*/
7
8	if (!defined('ABSPATH')) {
9	exit; // Exit if accessed directly
10	}
11
12	class MxChat_Ajax_Handler {
13
14	private $pinecone_manager = null;
15
16	/**
17	* Constructor - Register all AJAX hooks
18	*/
19	public function __construct() {
20	$this->mxchat_init_ajax_hooks();
21	}
22
23
24	/**
25	* Register all AJAX action hooks
26	*/
27	private function mxchat_init_ajax_hooks() {
28	// Settings AJAX
29	add_action('wp_ajax_mxchat_save_setting', array($this, 'mxchat_save_setting_callback'));
30	add_action('wp_ajax_mxchat_save_prompts_setting', array($this, 'mxchat_save_prompts_setting_callback'));
31	add_action('wp_ajax_migrate_pinecone_settings', array($this, 'ajax_migrate_pinecone_settings'));
32
33	// License AJAX
34	add_action('wp_ajax_mxchat_handle_activate_license', array($this, 'mxchat_handle_activate_license'));
35	add_action('wp_ajax_mxchat_check_license_status', array($this, 'mxchat_check_license_status'));
36	add_action('wp_ajax_mxchat_deactivate_license', array($this, 'mxchat_deactivate_license'));
37
38	// Actions & Intents AJAX
39	add_action('wp_ajax_mxchat_toggle_action', array($this, 'mxchat_toggle_action'));
40	add_action('wp_ajax_mxchat_update_intent_threshold', array($this, 'mxchat_update_intent_threshold'));
41
42	add_action('wp_ajax_mxchat_save_selected_bot', array($this, 'mxchat_save_selected_bot'));
43	add_action('wp_ajax_mxchat_check_api_keys', array($this, 'mxchat_check_api_keys'));
44
45	// Debug & Optimization AJAX
46	add_action('wp_ajax_mxchat_toggle_debug_mode', array($this, 'mxchat_toggle_debug_mode_callback'));
47	add_action('wp_ajax_mxchat_get_debug_log', array($this, 'mxchat_get_debug_log_callback'));
48	add_action('wp_ajax_mxchat_clear_debug_log', array($this, 'mxchat_clear_debug_log_callback'));
49	add_action('wp_ajax_mxchat_export_settings', array($this, 'mxchat_export_settings_callback'));
50	add_action('wp_ajax_mxchat_reset_all_settings', array($this, 'mxchat_reset_all_settings_callback'));
51
52	// Global rate-limit usage counter reset (admin-only, nonce-guarded)
53	add_action('wp_ajax_mxchat_reset_global_rate_limit', array($this, 'mxchat_reset_global_rate_limit_callback'));
54
55	// Custom (OpenAI-compatible) Provider connection test
56	add_action('wp_ajax_mxchat_test_custom_provider', array($this, 'mxchat_test_custom_provider_callback'));
57	}
58
59	/**
60	* Test connection to a Custom (OpenAI-compatible) provider by hitting its /models endpoint
61	* with whichever auth scheme the user configured. Reports model count or a clean error.
62	*/
63	public function mxchat_test_custom_provider_callback() {
64	check_ajax_referer('mxchat_test_custom_provider');
65	if (!current_user_can('manage_options')) {
66	wp_send_json_error(array('message' => esc_html__('Unauthorized', 'mxchat')));
67	}
68
69	$options = get_option('mxchat_options', array());
70	$base_url = isset($options['custom_provider_base_url']) ? trim((string) $options['custom_provider_base_url']) : '';
71	$api_key = isset($options['custom_provider_api_key']) ? trim((string) $options['custom_provider_api_key']) : '';
72	$auth = isset($options['custom_provider_auth_scheme']) ? $options['custom_provider_auth_scheme'] : 'bearer';
73	$api_version = isset($options['custom_provider_api_version']) ? trim((string) $options['custom_provider_api_version']) : '';
74
75	if (empty($base_url)) {
76	wp_send_json_error(array('message' => esc_html__('Base URL is empty. Save it first.', 'mxchat')));
77	}
78
79	$url = rtrim($base_url, '/') . '/models';
80	if (!empty($api_version)) {
81	$url = add_query_arg('api-version', $api_version, $url);
82	}
83
84	$headers = array('Content-Type' => 'application/json');
85	if (!empty($api_key)) {
86	if ($auth === 'api-key') {
87	$headers['api-key'] = $api_key;
88	} else {
89	$headers['Authorization'] = 'Bearer ' . $api_key;
90	}
91	}
92
93	$response = wp_remote_get($url, array(
94	'headers' => $headers,
95	'timeout' => 10,
96	));
97
98	if (is_wp_error($response)) {
99	wp_send_json_error(array('message' => sprintf(esc_html__('Network error: %s', 'mxchat'), esc_html($response->get_error_message()))));
100	}
101
102	$code = (int) wp_remote_retrieve_response_code($response);
103	if ($code === 401 \|\| $code === 403) {
104	wp_send_json_error(array('message' => sprintf(esc_html__('Auth rejected (HTTP %d). Check API key and auth scheme.', 'mxchat'), $code)));
105	}
106	if ($code === 404) {
107	wp_send_json_error(array('message' => esc_html__('Endpoint not found (HTTP 404). Check the Base URL.', 'mxchat')));
108	}
109	if ($code < 200 \|\| $code >= 300) {
110	wp_send_json_error(array('message' => sprintf(esc_html__('Upstream returned HTTP %d.', 'mxchat'), $code)));
111	}
112
113	$body = json_decode(wp_remote_retrieve_body($response), true);
114	$count = 0;
115	if (is_array($body)) {
116	if (isset($body['data']) && is_array($body['data'])) {
117	$count = count($body['data']);
118	} elseif (isset($body['models']) && is_array($body['models'])) {
119	$count = count($body['models']);
120	}
121	}
122
123	wp_send_json_success(array(
124	'message' => sprintf(esc_html__('Connection OK — %d model(s) reported.', 'mxchat'), $count),
125	'count' => $count,
126	));
127	}
128
129	// ========================================
130	// SETTINGS AJAX HANDLERS
131	// ========================================
132
133	/**
134	* Validates and saves chat settings via AJAX request
135	*/
136	public function mxchat_save_setting_callback() {
137	check_ajax_referer('mxchat_save_setting_nonce');
138	if (!current_user_can('manage_options')) {
139	('MXChat Save: Unauthorized access attempt');
140	wp_send_json_error(['message' => esc_html__('Unauthorized', 'mxchat')]);
141	}
142
143	$name = isset($_POST['name']) ? $_POST['name'] : '';
144	// Strip slashes from the value before saving
145	$value = isset($_POST['value']) ? stripslashes($_POST['value']) : '';
146
147	//error_log('MXChat Save: Processing field name: ' . $name);
148	//error_log('MXChat Save: Field value: ' . $value);
149
150	if (empty($name)) {
151	//error_log('MXChat Save: Empty field name detected');
152	wp_send_json_error(['message' => esc_html__('Invalid field name', 'mxchat')]);
153	}
154
155	// Load the full options array
156	$options = get_option('mxchat_options', []);
157	//error_log('MXChat Save: Current options array: ' . print_r($options, true));
158
159	// Extract field name from mxchat_options[field_name] format if present
160	// But preserve the full name for special cases like rate_limits that need the full path
161	$field_name = $name;
162	if (preg_match('/^mxchat_options\[([^\[\]]+)\]$/', $name, $matches)) {
163	$field_name = $matches[1];
164	}
165
166	// Handle special cases
167	switch ($field_name) {
168	case 'model':
169	//error_log('MXChat Save: Processing model selection');
170	//error_log('MXChat Save: Model value received: ' . $value);
171	//error_log('MXChat Save: Value type: ' . gettype($value));
172	//error_log('MXChat Save: Value length: ' . strlen($value));
173	//error_log('MXChat Save: Value === "openrouter": ' . ($value === 'openrouter' ? 'YES' : 'NO'));
174
175	// Allow 'openrouter' or validate against whitelist
176	if ($value === 'openrouter') {
177	//error_log('MXChat Save: Setting model to openrouter');
178	$options['model'] = 'openrouter';
179	} else {
180	//error_log('MXChat Save: Checking against whitelist');
181	// Catalog refactor (plan-d14e89): canonical allowlist lives in
182	// includes/class-mxchat-model-catalog.php. A new chat model
183	// added there is automatically accepted by autosave.
184	if (!class_exists('MxChat_Model_Catalog')) {
185	require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-mxchat-model-catalog.php';
186	}
187	$allowed_models = MxChat_Model_Catalog::chat_model_ids();
188
189	//error_log('MXChat Save: in_array result: ' . (in_array($value, $allowed_models) ? 'YES' : 'NO'));
190
191	if (in_array($value, $allowed_models)) {
192	//error_log('MXChat Save: Model is in whitelist, saving');
193	$options['model'] = sanitize_text_field($value);
194	} else {
195	//error_log('MXChat Save: Invalid model rejected: ' . $value);
196	//error_log('MXChat Save: Allowed models: ' . print_r($allowed_models, true));
197	wp_send_json_error(['message' => esc_html__('Invalid model selected', 'mxchat')]);
198	return;
199	}
200	}
201	break;
202
203	case 'openrouter_selected_model':
204	//error_log('MXChat Save: Processing OpenRouter model: ' . $value);
205	$options['openrouter_selected_model'] = sanitize_text_field($value);
206	// Force immediate save for new keys
207	//error_log('MXChat Save: OpenRouter model saved immediately');
208	break;
209
210	case 'openrouter_selected_model_name':
211	//error_log('MXChat Save: Processing OpenRouter model name: ' . $value);
212	$options['openrouter_selected_model_name'] = sanitize_text_field($value);
213	// Force immediate save for new keys
214	//error_log('MXChat Save: OpenRouter model name saved immediately');
215	break;
216
217	case 'openrouter_api_key':
218	//error_log('MXChat Save: Processing OpenRouter API key');
219	$options['openrouter_api_key'] = sanitize_text_field($value);
220	break;
221
222	// REMOVED DUPLICATE case 'openrouter_selected_model_name' HERE!
223
224	case 'additional_popular_questions':
225	//error_log('MXChat Save: Processing additional_popular_questions');
226	$questions = json_decode($value, true); // No need for stripslashes here
227	if (is_array($questions)) {
228	$options[$field_name] = $questions;
229	// Also update old option for backwards compatibility
230	update_option('additional_popular_questions', $questions);
231	//error_log('MXChat Save: Saved ' . count($questions) . ' additional questions');
232	} else {
233	//error_log('MXChat Save: Failed to decode questions JSON');
234	}
235	break;
236	case 'email_blocker_header_content':
237	//error_log('MXChat Save: Processing email_blocker_header_content');
238	// Allow HTML content but sanitize it safely
239	$options[$field_name] = wp_kses_post($value);
240	break;
241	case 'email_blocker_button_text':
242	//error_log('MXChat Save: Processing email_blocker_button_text');
243	$options[$field_name] = sanitize_text_field($value);
244	break;
245	case 'name_field_placeholder':
246	//error_log('MXChat Save: Processing name_field_placeholder');
247	$options[$field_name] = sanitize_text_field($value);
248	break;
249	case 'similarity_threshold':
250	//error_log('MXChat Save: Processing similarity_threshold');
251	// Validate and save - enforce min 20, max 85
252	$threshold = intval($value);
253	if ($threshold < 20) $threshold = 20;
254	if ($threshold > 85) $threshold = 85;
255	$options[$field_name] = $threshold;
256	break;
257	case 'rag_sources_limit':
258	//error_log('MXChat Save: Processing rag_sources_limit');
259	// Validate and save - enforce min 3, max 10, default 6
260	$rag_limit = intval($value);
261	if ($rag_limit < 3) $rag_limit = 3;
262	if ($rag_limit > 10) $rag_limit = 10;
263	$options[$field_name] = $rag_limit;
264	break;
265	case 'rag_chunks_limit':
266	// Validate and save - enforce min 8, max 20, default 15
267	$chunks_limit = intval($value);
268	if ($chunks_limit < 8) $chunks_limit = 8;
269	if ($chunks_limit > 20) $chunks_limit = 20;
270	$options[$field_name] = $chunks_limit;
271	break;
272	case 'live_agent_status':
273	//error_log('MXChat Save: Processing live_agent_status');
274	// Set the new value
275	$options[$field_name] = ($value === 'on') ? 'on' : 'off';
276	break;
277	case 'enable_web_search':
278	//error_log('MXChat Save: Processing enable_web_search');
279	$options[$field_name] = ($value === 'on') ? 'on' : 'off';
280	break;
281	case 'enable_woocommerce_integration':
282	//error_log('MXChat Save: Processing enable_woocommerce_integration');
283	// Handle values that used to be 1/0
284	$options[$field_name] = ($value === 'on' \|\| $value === '1') ? 'on' : 'off';
285	break;
286	case 'post_type_visibility_mode':
287	// Validate mode value
288	$allowed_modes = array('all', 'include', 'exclude');
289	$options[$field_name] = in_array($value, $allowed_modes) ? $value : 'all';
290	break;
291	case 'post_type_visibility_list':
292	// Handle JSON array of post types
293	$post_types = json_decode($value, true);
294	if (is_array($post_types)) {
295	// Sanitize each post type slug
296	$options[$field_name] = array_map('sanitize_key', $post_types);
297	} else {
298	$options[$field_name] = array();
299	}
300	break;
301	case 'script_loading_strategy':
302	// Validate script loading strategy value
303	$allowed_strategies = array('default', 'defer', 'delay_1s', 'delay_3s', 'delay_5s', 'on_interaction');
304	$options[$field_name] = in_array($value, $allowed_strategies) ? $value : 'default';
305	break;
306	case 'auto_retry_on_transient_error':
307	// Boolean toggle — accept 1/0/on/off, default to '1' if any truthy value.
308	$options[$field_name] = ($value === '1' \|\| $value === 'on' \|\| $value === 1 \|\| $value === true) ? '1' : '0';
309	break;
310	default:
311	// Handle transcripts options
312	if (strpos($name, 'mxchat_transcripts_options') !== false) {
313	// Extract field name from mxchat_transcripts_options[field_name]
314	if (preg_match('/mxchat_transcripts_options\[([^\]]+)\]/', $name, $matches)) {
315	$field_name = $matches[1];
316
317	// Get current transcripts options
318	$transcripts_options = get_option('mxchat_transcripts_options', array());
319
320	// Ensure it's an array
321	if (!is_array($transcripts_options)) {
322	$transcripts_options = array();
323	}
324
325	// Handle checkbox values (convert 'on'/'off' to 1/0)
326	if ($value === 'on' \|\| $value === '1') {
327	$transcripts_options[$field_name] = 1;
328	} else if ($value === 'off' \|\| $value === '0' \|\| $value === '') {
329	$transcripts_options[$field_name] = 0;
330	} else {
331	// For text/select fields, sanitize appropriately
332	if ($field_name === 'mxchat_notification_email') {
333	$transcripts_options[$field_name] = sanitize_email($value);
334	} else {
335	$transcripts_options[$field_name] = sanitize_text_field($value);
336	}
337	}
338
339	// Use direct database update to bypass any filters
340	global $wpdb;
341
342	// Serialize the options array
343	$serialized = maybe_serialize($transcripts_options);
344
345	// Check if the option already exists in the database
346	$existing = $wpdb->get_var("SELECT option_id FROM {$wpdb->options} WHERE option_name = 'mxchat_transcripts_options'");
347
348	if ($existing) {
349	// Option exists, do an update
350	$result = $wpdb->update(
351	$wpdb->options,
352	array('option_value' => $serialized),
353	array('option_name' => 'mxchat_transcripts_options'),
354	array('%s'),
355	array('%s')
356	);
357	} else {
358	// Option doesn't exist (new install), do an insert
359	$result = $wpdb->insert(
360	$wpdb->options,
361	array(
362	'option_name' => 'mxchat_transcripts_options',
363	'option_value' => $serialized,
364	'autoload' => 'yes'
365	),
366	array('%s', '%s', '%s')
367	);
368	}
369
370	// Clear all caches after direct DB update
371	wp_cache_delete('mxchat_transcripts_options', 'options');
372	wp_cache_delete('alloptions', 'options');
373	wp_cache_flush();
374
375	wp_send_json_success(['message' => esc_html__('Setting saved', 'mxchat')]);
376	return;
377	}
378	}
379	// Whole-chatbot global cap (sits in mxchat_options['rate_limits_global']).
380	// Field names: mxchat_options[rate_limits_global][limit\|timeframe\|limit_custom]
381	else if (strpos($name, 'mxchat_options[rate_limits_global]') !== false) {
382	preg_match('/\[rate_limits_global\]\[(.*?)\]/', $name, $matches);
383	if (isset($matches[1])) {
384	$setting_key = $matches[1];
385	if (!isset($options['rate_limits_global']) \|\| !is_array($options['rate_limits_global'])) {
386	$options['rate_limits_global'] = array('limit' => 'unlimited', 'timeframe' => 'daily');
387	}
388	if ($setting_key === 'limit') {
389	// Selection from the preset dropdown. If __custom__, resolve from limit_custom; otherwise store directly.
390	if ($value === '__custom__') {
391	$custom = isset($options['rate_limits_global']['limit_custom']) ? (string) $options['rate_limits_global']['limit_custom'] : '';
392	if ($custom !== '' && ctype_digit($custom) && (int) $custom >= 1) {
393	$options['rate_limits_global']['limit'] = $custom;
394	}
395	// else leave existing limit untouched until the custom value arrives
396	} else {
397	$options['rate_limits_global']['limit'] = $value;
398	}
399	} elseif ($setting_key === 'limit_custom') {
400	$clean = preg_replace('/[^0-9]/', '', (string) $value);
401	$options['rate_limits_global']['limit_custom'] = $clean;
402	// Mirror a valid custom value into limit UNCONDITIONALLY (plan-74eb86).
403	// The custom number input is only editable when the dropdown is on
404	// "Custom…" (the toggle JS hides it for presets/unlimited) and autosave
405	// sends one field per change event, so a limit_custom change only fires
406	// in custom mode — there is no preset to clobber. The old guard required
407	// limit to already be non-preset, which it isn't on a first-time custom
408	// entry (the limit=__custom__ event arrives before limit_custom is set),
409	// so the value never landed in limit on the first save and reverted on refresh.
410	if ($clean !== '' && (int) $clean >= 1) {
411	$options['rate_limits_global']['limit'] = $clean;
412	}
413	} elseif ($setting_key === 'timeframe') {
414	$allowed_tf = array('hourly','daily','weekly','monthly');
415	$options['rate_limits_global']['timeframe'] = in_array($value, $allowed_tf, true) ? $value : 'daily';
416	}
417	}
418	}
419	// First check for rate limits settings
420	else if (strpos($name, 'mxchat_options[rate_limits]') !== false) {
421	//error_log('MXChat Save: Detected rate_limits field: ' . $name);
422
423	// Extract role ID and setting from the name
424	preg_match('/\[rate_limits\]\[(.?)\]\[(.?)\]/', $name, $matches);
425	//error_log('MXChat Save: Regex matches: ' . print_r($matches, true));
426
427	if (isset($matches[1]) && isset($matches[2])) {
428	$role_id = $matches[1];
429	$setting_key = $matches[2]; // limit, timeframe, message, or limit_custom
430
431	//error_log('MXChat Save: Role ID = ' . $role_id . ', Setting Key = ' . $setting_key);
432
433	// Initialize rate_limits if it doesn't exist
434	if (!isset($options['rate_limits'])) {
435	// //error_log('MXChat Save: Initializing rate_limits array');
436	$options['rate_limits'] = [];
437	}
438
439	// Initialize role settings if it doesn't exist
440	if (!isset($options['rate_limits'][$role_id])) {
441	//error_log('MXChat Save: Initializing rate_limits for role: ' . $role_id);
442	$options['rate_limits'][$role_id] = [
443	'limit' => ($role_id === 'logged_out') ? '10' : '100',
444	'timeframe' => 'daily',
445	'message' => 'Rate limit exceeded. Please try again later.'
446	];
447	}
448
449	if ($setting_key === 'limit') {
450	if ($value === '__custom__') {
451	// Pull the integer from limit_custom that may have arrived (or will arrive).
452	$custom = isset($options['rate_limits'][$role_id]['limit_custom']) ? (string) $options['rate_limits'][$role_id]['limit_custom'] : '';
453	if ($custom !== '' && ctype_digit($custom) && (int) $custom >= 1) {
454	$options['rate_limits'][$role_id]['limit'] = $custom;
455	}
456	} else {
457	$options['rate_limits'][$role_id]['limit'] = $value;
458	}
459	} elseif ($setting_key === 'limit_custom') {
460	$clean = preg_replace('/[^0-9]/', '', (string) $value);
461	$options['rate_limits'][$role_id]['limit_custom'] = $clean;
462	// Mirror a valid custom value into limit UNCONDITIONALLY — same reasoning
463	// as the global branch above (plan-74eb86). The per-role custom input is
464	// only editable in custom mode and autosave is one-field-per-change, so
465	// this never clobbers a preset; it fixes the first-time-save revert.
466	if ($clean !== '' && (int) $clean >= 1) {
467	$options['rate_limits'][$role_id]['limit'] = $clean;
468	}
469	} else {
470	// Update the specific setting (timeframe, message)
471	$options['rate_limits'][$role_id][$setting_key] = $value;
472	}
473	//error_log('MXChat Save: Updated rate_limits[' . $role_id . '][' . $setting_key . '] = ' . $value);
474	} else {
475	//error_log('MXChat Save: Failed to parse rate_limits pattern: ' . $name);
476	}
477	}
478	// Then check for role rate limits (old format)
479	else if (strpos($name, 'mxchat_options[role_rate_limits]') !== false) {
480	//error_log('MXChat Save: Processing role_rate_limits field: ' . $name);
481	// Extract role ID from the name
482	preg_match('/\[role_rate_limits\]\[(.*?)\]/', $name, $matches);
483	//error_log('MXChat Save: Regex matches: ' . print_r($matches, true));
484
485	if (isset($matches[1])) {
486	$role_id = $matches[1];
487	// Initialize role_rate_limits if it doesn't exist
488	if (!isset($options['role_rate_limits'])) {
489	//error_log('MXChat Save: Initializing role_rate_limits array');
490	$options['role_rate_limits'] = [];
491	}
492	// Update the specific role's rate limit
493	$options['role_rate_limits'][$role_id] = sanitize_text_field($value);
494	//error_log('MXChat Save: Updated role_rate_limits[' . $role_id . '] = ' . $value);
495	} else {
496	//error_log('MXChat Save: Failed to parse role_rate_limits pattern: ' . $name);
497	}
498	}
499	// Handle toggles - check both extracted field_name and original name for toggle detection
500	else if (strpos($field_name, 'toggle') !== false \|\| in_array($field_name, [
501	'chat_persistence_toggle',
502	'privacy_toggle',
503	'complianz_toggle',
504	'chat_toolbar_toggle',
505	'show_pdf_upload_button',
506	'show_word_upload_button',
507	'enable_streaming_toggle',
508	'contextual_awareness_toggle',
509	'citation_links_toggle',
510	'enable_email_block',
511	'enable_name_field',
512	'custom_provider_for_embeddings',
513	'custom_provider_for_images'
514	])) {
515	//error_log('MXChat Save: Processing toggle: ' . $field_name);
516	$options[$field_name] = ($value === 'on') ? 'on' : 'off';
517	} else {
518	//error_log('MXChat Save: Processing standard field: ' . $field_name);
519	// Store all other values directly using the extracted field name
520	$options[$field_name] = $value;
521	}
522	break;
523	}
524
525	// Save all updates to the options array
526	$updated = update_option('mxchat_options', $options);
527	//error_log('MXChat Save: Update result: ' . ($updated ? 'success' : 'unchanged') . ' for field: ' . $name);
528	//error_log('MXChat Save: Updated options array: ' . print_r($options, true));
529
530	// Log the save action if debug mode is enabled
531	if ( class_exists( 'MxChat_Admin' ) ) {
532	MxChat_Admin::mxchat_log_debug(
533	'settings_save',
534	sprintf( 'Field saved: %s', $field_name ),
535	array(
536	'field' => $field_name,
537	'updated' => $updated,
538	)
539	);
540	}
541
542	// Always return success even if WordPress says nothing changed
543	// (which happens when the value is the same as before)
544	wp_send_json_success(['message' => esc_html__('Setting saved', 'mxchat')]);
545	}
546
547	/**
548	* Save the selected bot for knowledge base operations
549	*/
550	public function mxchat_save_selected_bot() {
551	// Check nonce
552	if (!wp_verify_nonce($_POST['nonce'] ?? '', 'mxchat_save_setting_nonce')) {
553	wp_send_json_error('Invalid nonce');
554	}
555
556	// Check permissions
557	if (!current_user_can('manage_options')) {
558	wp_send_json_error('Unauthorized');
559	}
560
561	$bot_id = isset($_POST['bot_id']) ? sanitize_key($_POST['bot_id']) : 'default';
562
563	// Save as user meta for the current user
564	$user_id = get_current_user_id();
565	update_user_meta($user_id, 'mxchat_selected_knowledge_bot', $bot_id);
566
567	// Also save as an option for site-wide default
568	update_option('mxchat_current_knowledge_bot', $bot_id);
569
570	// No cache clearing needed since we removed caching
571
572	wp_send_json_success(array(
573	'message' => 'Bot selection saved',
574	'bot_id' => $bot_id
575	));
576	}
577
578	/**
579	* Handles AJAX request for saving chat settings
580	*/
581	public function mxchat_save_prompts_setting_callback() {
582	check_ajax_referer('mxchat_prompts_setting_nonce');
583
584	if (!current_user_can('manage_options')) {
585	wp_send_json_error(['message' => esc_html__('Unauthorized', 'mxchat')]);
586	}
587
588	$name = isset($_POST['name']) ? $_POST['name'] : '';
589	$value = isset($_POST['value']) ? stripslashes($_POST['value']) : '';
590
591	//error_log('[MXCHAT-PROMPTS] Saving setting: ' . $name . ' = ' . $value);
592
593	if (empty($name)) {
594	wp_send_json_error(['message' => esc_html__('Invalid field name', 'mxchat')]);
595	}
596
597	// Handle Pinecone settings - BYPASS WORDPRESS SANITIZATION
598	if (strpos($name, 'mxchat_pinecone_addon_options') !== false) {
599	//error_log('[MXCHAT-PROMPTS] Processing Pinecone setting: ' . $name);
600
601	// Extract the field name
602	if (preg_match('/mxchat_pinecone_addon_options\[([^\]]+)\]/', $name, $matches)) {
603	$field_name = $matches[1];
604	//error_log('[MXCHAT-PROMPTS] Extracted field name: ' . $field_name);
605
606	// Get current options directly from database - NO WordPress filters
607	global $wpdb;
608	$current_options_raw = $wpdb->get_var(
609	$wpdb->prepare(
610	"SELECT option_value FROM {$wpdb->options} WHERE option_name = %s",
611	'mxchat_pinecone_addon_options'
612	)
613	);
614
615	// FIX: Handle the case where the option doesn't exist yet
616	if ($current_options_raw === null) {
617	// Option doesn't exist, create it with default values
618	$current_options = array(
619	'mxchat_use_pinecone' => '0',
620	'mxchat_pinecone_api_key' => '',
621	'mxchat_pinecone_host' => '',
622	'mxchat_pinecone_index' => '',
623	'mxchat_pinecone_environment' => ''
624	);
625	//error_log('[MXCHAT-PROMPTS] Option does not exist, creating with defaults');
626	} else {
627	// Unserialize the raw data
628	$current_options = maybe_unserialize($current_options_raw);
629	if (!is_array($current_options)) {
630	// Fallback to defaults if unserialization fails
631	$current_options = array(
632	'mxchat_use_pinecone' => '0',
633	'mxchat_pinecone_api_key' => '',
634	'mxchat_pinecone_host' => '',
635	'mxchat_pinecone_index' => '',
636	'mxchat_pinecone_environment' => ''
637	);
638	//error_log('[MXCHAT-PROMPTS] Failed to unserialize, using defaults');
639	}
640	}
641
642	//error_log('[MXCHAT-PROMPTS] Current options from DB: ' . print_r($current_options, true));
643
644	// Update the specific field with proper sanitization
645	switch ($field_name) {
646	case 'mxchat_use_pinecone':
647	$new_value = ($value === '1') ? '1' : '0';
648	break;
649	case 'mxchat_pinecone_api_key':
650	case 'mxchat_pinecone_host':
651	case 'mxchat_pinecone_index':
652	case 'mxchat_pinecone_environment':
653	$new_value = sanitize_text_field($value);
654	if ($field_name === 'mxchat_pinecone_host') {
655	$new_value = str_replace(['https://', 'http://'], '', $new_value);
656	}
657	break;
658	default:
659	wp_send_json_error(['message' => esc_html__('Unknown Pinecone field', 'mxchat')]);
660	}
661
662	$current_options[$field_name] = $new_value;
663	//error_log('[MXCHAT-PROMPTS] New value for ' . $field_name . ': "' . $new_value . '"');
664	//error_log('[MXCHAT-PROMPTS] Updated options: ' . print_r($current_options, true));
665
666	// Save directly to database to bypass WordPress sanitization
667	$serialized_options = maybe_serialize($current_options);
668
669	// FIX: Use INSERT ... ON DUPLICATE KEY UPDATE or separate INSERT/UPDATE logic
670	$option_exists = $wpdb->get_var(
671	$wpdb->prepare(
672	"SELECT COUNT(*) FROM {$wpdb->options} WHERE option_name = %s",
673	'mxchat_pinecone_addon_options'
674	)
675	);
676
677	if ($option_exists > 0) {
678	// Update existing option
679	$save_result = $wpdb->update(
680	$wpdb->options,
681	array('option_value' => $serialized_options),
682	array('option_name' => 'mxchat_pinecone_addon_options'),
683	array('%s'),
684	array('%s')
685	);
686	//error_log('[MXCHAT-PROMPTS] Updated existing option, result: ' . ($save_result !== false ? 'SUCCESS' : 'FAILED'));
687	} else {
688	// Insert new option
689	$save_result = $wpdb->insert(
690	$wpdb->options,
691	array(
692	'option_name' => 'mxchat_pinecone_addon_options',
693	'option_value' => $serialized_options,
694	'autoload' => 'yes'
695	),
696	array('%s', '%s', '%s')
697	);
698	//error_log('[MXCHAT-PROMPTS] Inserted new option, result: ' . ($save_result !== false ? 'SUCCESS' : 'FAILED'));
699	}
700
701	// Clear any WordPress option cache to ensure get_option() returns fresh data
702	wp_cache_delete('mxchat_pinecone_addon_options', 'options');
703
704	// IMPROVED VERIFICATION - Check if the database operation succeeded
705	if ($save_result !== false) {
706	// Double-check by reading fresh from database
707	$verification_raw = $wpdb->get_var(
708	$wpdb->prepare(
709	"SELECT option_value FROM {$wpdb->options} WHERE option_name = %s",
710	'mxchat_pinecone_addon_options'
711	)
712	);
713	$verification_options = maybe_unserialize($verification_raw);
714	$verified_value = isset($verification_options[$field_name]) ? $verification_options[$field_name] : 'NOT_FOUND';
715
716	//error_log('[MXCHAT-PROMPTS] Final verification - Expected: "' . $new_value . '", Got: "' . $verified_value . '"');
717
718	// Use loose comparison (==) instead of strict (===) to avoid type issues
719	if ($verified_value == $new_value \|\| $save_result > 0) {
720	wp_send_json_success(['message' => esc_html__('Pinecone setting saved', 'mxchat')]);
721	} else {
722	// Still return success if the DB operation worked, even if verification is quirky
723	//error_log('[MXCHAT-PROMPTS] Verification mismatch but DB operation succeeded');
724	wp_send_json_success(['message' => esc_html__('Pinecone setting saved (DB success)', 'mxchat')]);
725	}
726	} else {
727	wp_send_json_error(['message' => esc_html__('Database save failed', 'mxchat')]);
728	}
729	} else {
730	wp_send_json_error(['message' => esc_html__('Invalid field name format', 'mxchat')]);
731	}
732
733	return; // Exit here for Pinecone settings
734	}
735	// Handle auto-sync settings (existing functionality)
736	if (strpos($name, 'mxchat_auto_sync_') === 0) {
737	$value = ($value === 'on' \|\| $value === '1') ? '1' : '0';
738	$updated = update_option($name, $value);
739
740	if ($updated \|\| get_option($name) === $value) {
741	wp_send_json_success(['message' => esc_html__('Auto-sync setting saved', 'mxchat')]);
742	} else {
743	wp_send_json_error(['message' => esc_html__('No changes detected', 'mxchat')]);
744	}
745	}
746
747	// Handle chunking settings - use direct DB access to bypass WordPress filters
748	if (strpos($name, 'mxchat_chunk') === 0 \|\| $name === 'mxchat_chunking_enabled') {
749	global $wpdb;
750
751	// Get current options directly from database
752	$current_options_raw = $wpdb->get_var(
753	$wpdb->prepare(
754	"SELECT option_value FROM {$wpdb->options} WHERE option_name = %s",
755	'mxchat_options'
756	)
757	);
758
759	$options = $current_options_raw !== null ? maybe_unserialize($current_options_raw) : array();
760	if (!is_array($options)) {
761	$options = array();
762	}
763
764	// Update the specific chunking field
765	if ($name === 'mxchat_chunking_enabled') {
766	$options['chunking_enabled'] = in_array($value, array('on', '1', 'true', true), true);
767	} elseif ($name === 'mxchat_chunk_size') {
768	$options['chunk_size'] = max(1000, min(10000, intval($value)));
769	}
770
771	// Save directly to database
772	$serialized_options = maybe_serialize($options);
773
774	$option_exists = $wpdb->get_var(
775	$wpdb->prepare(
776	"SELECT COUNT(*) FROM {$wpdb->options} WHERE option_name = %s",
777	'mxchat_options'
778	)
779	);
780
781	if ($option_exists > 0) {
782	$save_result = $wpdb->update(
783	$wpdb->options,
784	array('option_value' => $serialized_options),
785	array('option_name' => 'mxchat_options'),
786	array('%s'),
787	array('%s')
788	);
789	} else {
790	$save_result = $wpdb->insert(
791	$wpdb->options,
792	array(
793	'option_name' => 'mxchat_options',
794	'option_value' => $serialized_options,
795	'autoload' => 'yes'
796	),
797	array('%s', '%s', '%s')
798	);
799	}
800
801	// Clear object cache for this option
802	wp_cache_delete('mxchat_options', 'options');
803
804	if ($save_result !== false) {
805	wp_send_json_success(['message' => esc_html__('Chunking setting saved', 'mxchat')]);
806	} else {
807	wp_send_json_error(['message' => esc_html__('Failed to save chunking setting', 'mxchat')]);
808	}
809	return;
810	}
811
812	// Handle ACF field exclusion toggles
813	if (strpos($name, 'mxchat_acf_field_') === 0) {
814	// Extract field name from the input name (e.g., mxchat_acf_field_private_notes -> private_notes)
815	$field_name = str_replace('mxchat_acf_field_', '', $name);
816	$is_enabled = ($value === 'on' \|\| $value === '1');
817
818	// Get current excluded fields
819	$excluded_fields = get_option('mxchat_acf_excluded_fields', array());
820	if (!is_array($excluded_fields)) {
821	$excluded_fields = array();
822	}
823
824	if ($is_enabled) {
825	// Remove from exclusion list (field should be included)
826	$excluded_fields = array_values(array_diff($excluded_fields, array($field_name)));
827	} else {
828	// Add to exclusion list (field should be excluded)
829	if (!in_array($field_name, $excluded_fields)) {
830	$excluded_fields[] = $field_name;
831	}
832	}
833
834	$updated = update_option('mxchat_acf_excluded_fields', $excluded_fields);
835
836	if ($updated \|\| true) { // Always report success since the state may already be correct
837	wp_send_json_success([
838	'message' => $is_enabled
839	? sprintf(esc_html__('Field "%s" will be included in imports', 'mxchat'), $field_name)
840	: sprintf(esc_html__('Field "%s" will be excluded from imports', 'mxchat'), $field_name)
841	]);
842	} else {
843	wp_send_json_error(['message' => esc_html__('Failed to save ACF field setting', 'mxchat')]);
844	}
845	return;
846	}
847
848	// Handle custom post meta whitelist
849	if ($name === 'mxchat_custom_meta_whitelist') {
850	$updated = update_option('mxchat_custom_meta_whitelist', sanitize_textarea_field($value));
851
852	if ($updated \|\| true) { // Always report success since the state may already be correct
853	wp_send_json_success([
854	'message' => esc_html__('Custom meta whitelist saved', 'mxchat')
855	]);
856	} else {
857	wp_send_json_error(['message' => esc_html__('Failed to save custom meta whitelist', 'mxchat')]);
858	}
859	return;
860	}
861
862	// Handle other prompts options
863	$options = get_option('mxchat_prompts_options', []);
864	$options[$name] = $value;
865	$updated = update_option('mxchat_prompts_options', $options);
866
867	if ($updated) {
868	wp_send_json_success(['message' => esc_html__('Setting saved', 'mxchat')]);
869	} else {
870	wp_send_json_error(['message' => esc_html__('No changes detected', 'mxchat')]);
871	}
872	}
873
874
875	/**
876	* Handles AJAX request for Pinecone settings migration
877	*/
878	public function ajax_migrate_pinecone_settings() {
879	// Verify nonce
880	if (!wp_verify_nonce($_POST['_ajax_nonce'] ?? '', 'mxchat_save_setting_nonce')) {
881	wp_send_json_error('Invalid nonce');
882	}
883
884	// Check permissions
885	if (!current_user_can('manage_options')) {
886	wp_send_json_error('Unauthorized access');
887	}
888
889	// Check if old Pinecone addon options exist
890	$old_options = get_option('mxchat_pinecone_addon_options', array());
891
892	if (empty($old_options)) {
893	wp_send_json_success(array('migrated' => false, 'message' => 'No old settings found'));
894	}
895
896	// Get current core plugin options
897	$current_options = get_option('mxchat_pinecone_addon_options', array());
898
899	// Only migrate if core options are empty or if explicitly requested
900	$should_migrate = empty($current_options) \|\|
901	(empty($current_options['mxchat_pinecone_api_key']) && !empty($old_options['mxchat_pinecone_api_key']));
902
903	if ($should_migrate) {
904	// Migrate settings with proper sanitization
905	$migrated_options = array(
906	'mxchat_use_pinecone' => $old_options['mxchat_use_pinecone'] ?? '0',
907	'mxchat_pinecone_api_key' => sanitize_text_field($old_options['mxchat_pinecone_api_key'] ?? ''),
908	'mxchat_pinecone_host' => sanitize_text_field($old_options['mxchat_pinecone_host'] ?? ''),
909	'mxchat_pinecone_index' => sanitize_text_field($old_options['mxchat_pinecone_index'] ?? ''),
910	'mxchat_pinecone_environment' => sanitize_text_field($old_options['mxchat_pinecone_environment'] ?? '')
911	);
912
913	update_option('mxchat_pinecone_addon_options', $migrated_options);
914
915	wp_send_json_success(array(
916	'migrated' => true,
917	'message' => 'Settings migrated successfully from Pinecone add-on'
918	));
919	} else {
920	wp_send_json_success(array(
921	'migrated' => false,
922	'message' => 'Settings already exist in core plugin'
923	));
924	}
925	}
926
927
928	// ========================================
929	// LICENSE AJAX HANDLERS
930	// ========================================
931
932	/**
933	* Validates and activates chat license via AJAX
934	*/
935	public function mxchat_handle_activate_license() {
936	// Check nonce
937	if (!check_ajax_referer('mxchat_activate_license_nonce', 'security', false)) {
938	wp_send_json_error(esc_html__('Invalid security token', 'mxchat'));
939	return;
940	}
941
942	// Verify user capabilities
943	if (!current_user_can('manage_options')) {
944	wp_send_json_error(esc_html__('Unauthorized access', 'mxchat'));
945	return;
946	}
947
948	$license_key = isset($_POST['mxchat_activation_key']) ? sanitize_text_field($_POST['mxchat_activation_key']) : '';
949	$customer_email = isset($_POST['mxchat_pro_email']) ? sanitize_email($_POST['mxchat_pro_email']) : '';
950
951	if (empty($license_key) \|\| empty($customer_email)) {
952	wp_send_json_error(esc_html__('Email or License Key is missing', 'mxchat'));
953	return;
954	}
955
956	$product_id = 'MxChatPRO';
957	$domain = parse_url(home_url(), PHP_URL_HOST); // Get the current domain
958
959	// Call WooCommerce Software API for activation (not just validation)
960	$response = wp_remote_get(
961	add_query_arg(
962	array(
963	'wc-api' => 'software-api',
964	'request' => 'activation',
965	'email' => $customer_email,
966	'license_key' => $license_key,
967	'product_id' => $product_id,
968	'instance' => $domain, // THIS IS KEY - include the domain as instance
969	'platform' => 'wordpress' // Optional but good to include
970	),
971	'https://mxchat.ai/'
972	),
973	array(
974	'timeout' => 60,
975	'sslverify' => true
976	)
977	);
978
979	if (is_wp_error($response)) {
980	$error_message = $response->get_error_message();
981	//error_log('MxChat License Activation Error: ' . $error_message);
982	wp_send_json_error(esc_html__('Activation failed due to a server error: ', 'mxchat') . $error_message);
983	return;
984	}
985
986	$response_code = wp_remote_retrieve_response_code($response);
987	$body = wp_remote_retrieve_body($response);
988
989	// Log response for debugging
990	//error_log('MxChat License Response Code: ' . $response_code);
991	//error_log('MxChat License Response Body: ' . $body);
992
993	if ($response_code !== 200) {
994	wp_send_json_error(esc_html__('Server returned error code: ', 'mxchat') . $response_code);
995	return;
996	}
997
998	$data = json_decode($body);
999
1000	if ($data && isset($data->activated) && $data->activated) {
1001	// Success - save local options
1002	update_option('mxchat_license_status', 'active');
1003	update_option('mxchat_pro_email', $customer_email);
1004	update_option('mxchat_activation_key', $license_key);
1005	delete_option('mxchat_license_error');
1006
1007	// Also track on your website (this is your existing domain tracking)
1008	$this->track_domain_on_website($license_key, $customer_email, $domain);
1009
1010	wp_send_json_success(array('message' => esc_html__('License activated successfully', 'mxchat')));
1011	} else {
1012	$error_message = isset($data->error) ? $data->error : esc_html__('Activation failed', 'mxchat');
1013	update_option('mxchat_license_status', 'inactive');
1014	update_option('mxchat_license_error', $error_message);
1015
1016	//error_log('MxChat Activation failed: ' . $error_message);
1017	wp_send_json_error($error_message);
1018	}
1019	}
1020
1021	/**
1022	* Track domain on your website (separate from WooCommerce activation)
1023	*/
1024	private function track_domain_on_website($license_key, $email, $domain) {
1025	// This calls your website's tracking API
1026	wp_remote_post('https://mxchat.ai/mxchat-api/activate-license', array(
1027	'body' => array(
1028	'mxchat_pro_email' => $email,
1029	'mxchat_activation_key' => $license_key,
1030	'domain' => $domain
1031	),
1032	'timeout' => 10,
1033	'sslverify' => true
1034	));
1035	}
1036
1037	/**
1038	* Validates license via AJAX with email and key
1039	*/
1040	public function mxchat_check_license_status() {
1041	// Verify nonce
1042	if (!check_ajax_referer('mxchat_activate_license_nonce', 'security', false)) {
1043	wp_send_json_error('Security check failed');
1044	return;
1045	}
1046
1047	// Add isset checks for safety
1048	$email = isset($_POST['email']) ? sanitize_email($_POST['email']) : '';
1049	$key = isset($_POST['key']) ? sanitize_text_field($_POST['key']) : '';
1050
1051	// Check if this license is actually active in your system
1052	$is_active = (get_option('mxchat_license_status') === 'active' &&
1053	get_option('mxchat_pro_email') === $email &&
1054	get_option('mxchat_activation_key') === $key);
1055
1056	wp_send_json(array(
1057	'is_active' => $is_active
1058	));
1059	}
1060
1061	/**
1062	* Handle license deactivation - Complete version for plugin
1063	*/
1064	function mxchat_deactivate_license() {
1065	// Add debugging
1066	//error_log('MxChat deactivate function called');
1067
1068	// Check nonce
1069	if (!check_ajax_referer('mxchat_activate_license_nonce', 'security', false)) {
1070	//error_log('MxChat deactivate: Nonce check failed');
1071	wp_send_json_error('Security check failed.');
1072	return;
1073	}
1074
1075	//error_log('MxChat deactivate: Nonce check passed');
1076
1077	$license_key = get_option('mxchat_activation_key');
1078	$email = get_option('mxchat_pro_email');
1079	$domain = parse_url(home_url(), PHP_URL_HOST);
1080
1081	//error_log('MxChat deactivate: License: ' . $license_key . ', Email: ' . $email . ', Domain: ' . $domain);
1082
1083	if (empty($license_key) \|\| empty($email)) {
1084	//error_log('MxChat deactivate: No active license found');
1085	wp_send_json_error('No active license found.');
1086	return;
1087	}
1088
1089	// Clear local license data first
1090	delete_option('mxchat_license_status');
1091	delete_option('mxchat_pro_email');
1092	delete_option('mxchat_activation_key');
1093	delete_option('mxchat_license_error');
1094
1095	//error_log('MxChat deactivate: Local data cleared');
1096
1097	// Notify your website's API to properly deactivate
1098	$response = wp_remote_post('https://mxchat.ai/mxchat-api/deactivate-license', array(
1099	'body' => array(
1100	'license_key' => $license_key,
1101	'email' => $email,
1102	'domain' => $domain
1103	),
1104	'timeout' => 15,
1105	'sslverify' => true
1106	));
1107
1108	if (is_wp_error($response)) {
1109	//error_log('MxChat deactivate: Server error - ' . $response->get_error_message());
1110	wp_send_json_success(array(
1111	'message' => 'License deactivated locally. Server could not be contacted to free activation slot.',
1112	'server_notified' => false
1113	));
1114	return;
1115	}
1116
1117	$response_body = wp_remote_retrieve_body($response);
1118	$response_data = json_decode($response_body, true);
1119
1120	//error_log('MxChat deactivate: Server response - ' . $response_body);
1121
1122	if (isset($response_data['success']) && $response_data['success']) {
1123	//error_log('MxChat deactivate: Success with server notification');
1124	wp_send_json_success(array(
1125	'message' => 'License deactivated successfully. Activation slot has been freed up.',
1126	'server_notified' => true
1127	));
1128	} else {
1129	//error_log('MxChat deactivate: Server responded but deactivation may have failed');
1130	wp_send_json_success(array(
1131	'message' => 'License deactivated locally. Please check your account dashboard to verify the activation was freed.',
1132	'server_notified' => false
1133	));
1134	}
1135	}
1136
1137
1138	// ========================================
1139	// ACTIONS & INTENTS AJAX HANDLERS
1140	// ========================================
1141
1142	/**
1143	* Validates nonce and returns JSON error on failure
1144	*/
1145	public function mxchat_toggle_action() {
1146	// Check nonce
1147	if (!isset($_POST['nonce']) \|\| !wp_verify_nonce($_POST['nonce'], 'mxchat_actions_nonce')) {
1148	wp_send_json_error(array('message' => 'Security check failed'));
1149	return;
1150	}
1151
1152	// Check permissions
1153	if (!current_user_can('manage_options')) {
1154	wp_send_json_error(array('message' => 'Permission denied'));
1155	return;
1156	}
1157
1158	// Validate params
1159	$intent_id = isset($_POST['intent_id']) ? intval($_POST['intent_id']) : 0;
1160	$enabled = isset($_POST['enabled']) ? (bool)$_POST['enabled'] : false;
1161
1162	if (!$intent_id) {
1163	wp_send_json_error(array('message' => 'Invalid action ID'));
1164	return;
1165	}
1166
1167	// Update the intent/action status in the database
1168	global $wpdb;
1169	$table_name = $wpdb->prefix . 'mxchat_intents';
1170
1171	// Using the 'enabled' field - add this field if it doesn't exist
1172	$result = $wpdb->update(
1173	$table_name,
1174	array('enabled' => $enabled ? 1 : 0),
1175	array('id' => $intent_id),
1176	array('%d'),
1177	array('%d')
1178	);
1179
1180	if ($result === false) {
1181	wp_send_json_error(array('message' => 'Database error'));
1182	return;
1183	}
1184
1185	wp_send_json_success();
1186	}
1187
1188
1189	/**
1190	* Validates permissions for AJAX request handling
1191	*/
1192	public function mxchat_update_intent_threshold() {
1193	// Check permissions
1194	if (!current_user_can('manage_options')) {
1195	if (wp_doing_ajax()) {
1196	wp_send_json_error(array('message' => 'Unauthorized user'));
1197	return;
1198	}
1199	wp_die(esc_html__('Unauthorized user', 'mxchat'));
1200	}
1201
1202	// Verify nonce
1203	check_admin_referer('mxchat_update_intent_threshold_nonce');
1204
1205	// Process the update if we have valid data
1206	if (isset($_POST['intent_id'], $_POST['intent_threshold'])) {
1207	global $wpdb;
1208	$table_name = $wpdb->prefix . 'mxchat_intents';
1209	$intent_id = intval($_POST['intent_id']);
1210	$threshold_percentage = max(70, min(95, intval($_POST['intent_threshold'])));
1211	$similarity_threshold = $threshold_percentage / 100;
1212
1213	$result = $wpdb->update(
1214	$table_name,
1215	['similarity_threshold' => $similarity_threshold],
1216	['id' => $intent_id],
1217	['%f'],
1218	['%d']
1219	);
1220
1221	// Handle AJAX requests
1222	if (wp_doing_ajax()) {
1223	if ($result === false) {
1224	wp_send_json_error(array('message' => 'Failed to update threshold'));
1225	} else {
1226	wp_send_json_success(array('threshold' => $threshold_percentage));
1227	}
1228	return;
1229	}
1230	}
1231
1232	// Redirect for regular form submissions
1233	wp_safe_redirect(admin_url('admin.php?page=mxchat-actions&updated=true'));
1234	exit;
1235	}
1236
1237	// ========================================
1238	// HELPER METHODS
1239	// ========================================
1240
1241	/**
1242	* Returns a specific nonce action string
1243	*/
1244	private function mxchat_get_nonce_action() {
1245	return 'mxchat_license_nonce';
1246	}
1247
1248	/**
1249	* Check API key status for all providers
1250	*/
1251	public function mxchat_check_api_keys() {
1252	// Check nonce
1253	if (!wp_verify_nonce($_POST['nonce'] ?? '', 'mxchat_save_setting_nonce')) {
1254	wp_send_json_error('Invalid nonce');
1255	}
1256
1257	// Check permissions
1258	if (!current_user_can('manage_options')) {
1259	wp_send_json_error('Unauthorized');
1260	}
1261
1262	// Get current options
1263	$options = get_option('mxchat_options', array());
1264
1265	// Check which API keys are present
1266	$api_key_status = array(
1267	'openai' => !empty($options['api_key']),
1268	'claude' => !empty($options['claude_api_key']),
1269	'xai' => !empty($options['xai_api_key']),
1270	'deepseek' => !empty($options['deepseek_api_key']),
1271	'gemini' => !empty($options['gemini_api_key']),
1272	'openrouter' => !empty($options['openrouter_api_key']),
1273	'voyage' => !empty($options['voyage_api_key'])
1274	);
1275
1276	wp_send_json_success($api_key_status);
1277	}
1278
1279	// ========================================
1280	// DEBUG & OPTIMIZATION AJAX HANDLERS
1281	// ========================================
1282
1283	/**
1284	* Toggle debug mode on/off
1285	*/
1286	public function mxchat_toggle_debug_mode_callback() {
1287	// Verify nonce
1288	if ( ! check_ajax_referer( 'mxchat_save_setting_nonce', '_ajax_nonce', false ) ) {
1289	wp_send_json_error( array( 'message' => esc_html__( 'Security check failed', 'mxchat' ) ) );
1290	}
1291
1292	// Check permissions
1293	if ( ! current_user_can( 'manage_options' ) ) {
1294	wp_send_json_error( array( 'message' => esc_html__( 'Unauthorized', 'mxchat' ) ) );
1295	}
1296
1297	$enabled = isset( $_POST['enabled'] ) && $_POST['enabled'] === 'on';
1298
1299	$options = get_option( 'mxchat_options', array() );
1300
1301	if ( $enabled ) {
1302	$options['debug_mode'] = 'on';
1303	update_option( 'mxchat_options', $options );
1304	MxChat_Admin::mxchat_log_debug( 'debug_mode', 'Debug mode enabled' );
1305	} else {
1306	// Log before disabling
1307	MxChat_Admin::mxchat_log_debug( 'debug_mode', 'Debug mode disabled' );
1308	$options['debug_mode'] = 'off';
1309	update_option( 'mxchat_options', $options );
1310	}
1311
1312	wp_send_json_success( array(
1313	'message' => $enabled ? esc_html__( 'Debug mode enabled', 'mxchat' ) : esc_html__( 'Debug mode disabled', 'mxchat' ),
1314	'enabled' => $enabled,
1315	) );
1316	}
1317
1318	/**
1319	* Get the debug log entries
1320	*/
1321	public function mxchat_get_debug_log_callback() {
1322	// Verify nonce
1323	if ( ! check_ajax_referer( 'mxchat_save_setting_nonce', '_ajax_nonce', false ) ) {
1324	wp_send_json_error( array( 'message' => esc_html__( 'Security check failed', 'mxchat' ) ) );
1325	}
1326
1327	// Check permissions
1328	if ( ! current_user_can( 'manage_options' ) ) {
1329	wp_send_json_error( array( 'message' => esc_html__( 'Unauthorized', 'mxchat' ) ) );
1330	}
1331
1332	$log = MxChat_Admin::mxchat_get_debug_log();
1333
1334	wp_send_json_success( array(
1335	'log' => $log,
1336	'count' => count( $log ),
1337	) );
1338	}
1339
1340	/**
1341	* Clear the debug log
1342	*/
1343	public function mxchat_clear_debug_log_callback() {
1344	// Verify nonce
1345	if ( ! check_ajax_referer( 'mxchat_save_setting_nonce', '_ajax_nonce', false ) ) {
1346	wp_send_json_error( array( 'message' => esc_html__( 'Security check failed', 'mxchat' ) ) );
1347	}
1348
1349	// Check permissions
1350	if ( ! current_user_can( 'manage_options' ) ) {
1351	wp_send_json_error( array( 'message' => esc_html__( 'Unauthorized', 'mxchat' ) ) );
1352	}
1353
1354	MxChat_Admin::mxchat_clear_debug_log();
1355
1356	// Log that the log was cleared (this will be the first entry in the new log)
1357	MxChat_Admin::mxchat_log_debug( 'debug_log', 'Debug log cleared by user' );
1358
1359	wp_send_json_success( array( 'message' => esc_html__( 'Debug log cleared', 'mxchat' ) ) );
1360	}
1361
1362	/**
1363	* Export settings as JSON
1364	*/
1365	public function mxchat_export_settings_callback() {
1366	// Verify nonce
1367	if ( ! check_ajax_referer( 'mxchat_save_setting_nonce', '_ajax_nonce', false ) ) {
1368	wp_send_json_error( array( 'message' => esc_html__( 'Security check failed', 'mxchat' ) ) );
1369	}
1370
1371	// Check permissions
1372	if ( ! current_user_can( 'manage_options' ) ) {
1373	wp_send_json_error( array( 'message' => esc_html__( 'Unauthorized', 'mxchat' ) ) );
1374	}
1375
1376	$export = MxChat_Admin::mxchat_export_settings();
1377
1378	// Log the export
1379	MxChat_Admin::mxchat_log_debug( 'settings_export', 'Settings exported by user' );
1380
1381	wp_send_json_success( array(
1382	'settings' => $export,
1383	'filename' => 'mxchat-settings-' . gmdate( 'Y-m-d-His' ) . '.json',
1384	) );
1385	}
1386
1387	/**
1388	* Reset all settings to defaults
1389	*/
1390	public function mxchat_reset_all_settings_callback() {
1391	// Verify nonce
1392	if ( ! check_ajax_referer( 'mxchat_save_setting_nonce', '_ajax_nonce', false ) ) {
1393	wp_send_json_error( array( 'message' => esc_html__( 'Security check failed', 'mxchat' ) ) );
1394	}
1395
1396	// Check permissions
1397	if ( ! current_user_can( 'manage_options' ) ) {
1398	wp_send_json_error( array( 'message' => esc_html__( 'Unauthorized', 'mxchat' ) ) );
1399	}
1400
1401	// Require confirmation code
1402	$confirmation = isset( $_POST['confirmation'] ) ? sanitize_text_field( wp_unslash( $_POST['confirmation'] ) ) : '';
1403
1404	if ( strtoupper( $confirmation ) !== 'RESET' ) {
1405	wp_send_json_error( array( 'message' => esc_html__( 'Invalid confirmation code. Please type RESET to confirm.', 'mxchat' ) ) );
1406	}
1407
1408	// Perform the reset
1409	MxChat_Admin::mxchat_reset_all_settings();
1410
1411	wp_send_json_success( array( 'message' => esc_html__( 'All settings have been reset to defaults. The page will reload.', 'mxchat' ) ) );
1412	}
1413
1414	/**
1415	* Reset the global rate-limit usage counter to zero on demand.
1416	*
1417	* Zeroes the WP option mxchat_chat_limit_<bot>_global that the integrator
1418	* increments per message, then returns a freshly-formatted readout string
1419	* so the settings page can update without a reload. Does NOT change any
1420	* enforcement config — purely clears the running counter.
1421	*/
1422	public function mxchat_reset_global_rate_limit_callback() {
1423	// Verify nonce
1424	if ( ! check_ajax_referer( 'mxchat_reset_global_usage', '_ajax_nonce', false ) ) {
1425	wp_send_json_error( array( 'message' => esc_html__( 'Security check failed', 'mxchat' ) ) );
1426	}
1427
1428	// Check permissions
1429	if ( ! current_user_can( 'manage_options' ) ) {
1430	wp_send_json_error( array( 'message' => esc_html__( 'Unauthorized', 'mxchat' ) ) );
1431	}
1432
1433	// Resolve the per-bot counter key the same way the integrator does.
1434	$bot_id = isset( $_POST['bot_id'] ) ? sanitize_key( wp_unslash( $_POST['bot_id'] ) ) : 'default';
1435	$safe_bot = preg_replace( '/[^a-zA-Z0-9_]/', '_', $bot_id );
1436	if ( $safe_bot === '' ) {
1437	$safe_bot = 'default';
1438	}
1439	$option_key = 'mxchat_chat_limit_' . $safe_bot . '_global';
1440
1441	$now = time();
1442	update_option( $option_key, array( 'count' => 0, 'timestamp' => $now ) );
1443
1444	// Recompute the display string so the front-end can update in place.
1445	$all_options = get_option( 'mxchat_options', array() );
1446	$global_cfg = isset( $all_options['rate_limits_global'] ) && is_array( $all_options['rate_limits_global'] )
1447	? $all_options['rate_limits_global']
1448	: array();
1449	$limit_raw = isset( $global_cfg['limit'] ) ? (string) $global_cfg['limit'] : 'unlimited';
1450	// Defensive: if a raw __custom__ ever slips through, fall back to the custom value.
1451	if ( ! ctype_digit( $limit_raw ) && isset( $global_cfg['limit_custom'] ) && ctype_digit( (string) $global_cfg['limit_custom'] ) ) {
1452	$limit_raw = (string) $global_cfg['limit_custom'];
1453	}
1454	$timeframe = isset( $global_cfg['timeframe'] ) ? (string) $global_cfg['timeframe'] : 'daily';
1455	$windows = array( 'hourly' => 3600, 'daily' => 86400, 'weekly' => 604800, 'monthly' => 2592000 );
1456	$window = isset( $windows[ $timeframe ] ) ? $windows[ $timeframe ] : 86400;
1457	$reset_at = $now + $window;
1458	$limit_int = ctype_digit( $limit_raw ) ? (int) $limit_raw : 0;
1459
1460	$text = sprintf(
1461	/* translators: 1: used count, 2: limit, 3: remaining, 4: human-readable time until reset */
1462	esc_html__( '%1$s of %2$s used · %3$s left · resets in %4$s', 'mxchat' ),
1463	number_format_i18n( 0 ),
1464	number_format_i18n( $limit_int ),
1465	number_format_i18n( $limit_int ),
1466	human_time_diff( $now, $reset_at )
1467	);
1468
1469	wp_send_json_success( array(
1470	'count' => 0,
1471	'limit' => $limit_int,
1472	'left' => $limit_int,
1473	'reset_at' => $reset_at,
1474	'pct' => 0,
1475	'text' => $text,
1476	'message' => esc_html__( 'Usage counter reset.', 'mxchat' ),
1477	) );
1478	}
1479
1480	}
1481
1482	// Initialize the AJAX handler
1483	new MxChat_Ajax_Handler();
1484