metasync / includes / class-metasync.php

class-metasync.php in Search Atlas SEO – OTTO AI SEO Automation for WordPress 2.6.15, at includes/class-metasync.php

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1	<?php
2	// If this file is called directly, abort.
3	if (!defined('ABSPATH')) {
4	exit;
5	}
6
7
8	/**
9	* The file that defines the core plugin class
10	*
11	* A class definition that includes attributes and functions used across both the
12	* public-facing side of the site and the admin area.
13	*
14	* @link https://searchatlas.com
15	* @since 1.0.0
16	*
17	* @package Metasync
18	* @subpackage Metasync/includes
19	*/
20
21	/**
22	* The core plugin class.
23	*
24	* This is used to define internationalization, admin-specific hooks, and
25	* public-facing site hooks.
26	*
27	* Also maintains the unique identifier of this plugin as well as the current
28	* version of the plugin.
29	*
30	* @since 1.0.0
31	* @package Metasync
32	* @subpackage Metasync/includes
33	* @author Engineering Team <support@searchatlas.com>
34	*/
35	class Metasync
36	{
37
38	/**
39	* The loader that's responsible for maintaining and registering all hooks that power
40	* the plugin.
41	*
42	* @since 1.0.0
43	* @access protected
44	* @var Metasync_Loader $loader Maintains and registers all hooks for the plugin.
45	*/
46	protected $loader;
47
48	/**
49	* The unique identifier of this plugin.
50	*
51	* @since 1.0.0
52	* @access protected
53	* @var string $plugin_name The string used to uniquely identify this plugin.
54	*/
55	protected $plugin_name;
56
57	/**
58	* The current version of the plugin.
59	*
60	* @since 1.0.0
61	* @access protected
62	* @var string $version The current version of the plugin.
63	*/
64	protected $version;
65
66	protected $database;
67
68	protected $db_redirection;
69
70	protected $db_heartbeat_errors;
71
72
73
74	public const option_name = "metasync_options";
75
76	/**
77	* Dedicated option key for heartbeat throttle timestamps.
78	*
79	* Stored separately from the main options blob so writes to last_heart_beat
80	* and last_heartbeat_at do not race with concurrent settings writes during
81	* the 15-second wp_remote_post window in SyncCustomerParams.
82	*/
83	public const heartbeat_throttle_option = "metasync_heartbeat_throttle";
84
85	/**
86	* Search Atlas Domain Constants
87	* Centralized constants for all Search Atlas service endpoints
88	*/
89	public const HOMEPAGE_DOMAIN = "https://searchatlas.com";
90	public const DASHBOARD_DOMAIN = "https://dashboard.searchatlas.com";
91	public const API_DOMAIN = "https://api.searchatlas.com";
92	public const CA_API_DOMAIN = "https://ca.searchatlas.com";
93	public const SUPPORT_EMAIL = "support@searchatlas.com";
94	public const DOCUMENTATION_DOMAIN = "https://help.searchatlas.com";
95
96	/**
97	* Define the core functionality of the plugin.
98	*
99	* Set the plugin name and the plugin version that can be used throughout the plugin.
100	* Load the dependencies, define the locale, and set the hooks for the admin area and
101	* the public-facing side of the site.
102	*
103	* @since 1.0.0
104	*/
105	public function __construct()
106	{
107	if (defined('METASYNC_VERSION')) {
108	$this->version = METASYNC_VERSION;
109	} else {
110	$this->version = '1.0.0';
111	}
112	$this->plugin_name = 'metasync';
113
114	$this->load_dependencies();
115	// $this->set_locale(); // Language support removed - using default only
116	$this->init_api_key_monitor();
117	$this->define_admin_hooks();
118	$this->define_public_hooks();
119	}
120
121	/**
122	* Load the required dependencies for this plugin.
123	*
124	* Include the following files that make up the plugin:
125	*
126	* - Metasync_Loader. Orchestrates the hooks of the plugin.
127	* - Metasync_i18n. Defines internationalization functionality.
128	* - Metasync_Admin. Defines all hooks for the admin area.
129	* - Metasync_Public. Defines all hooks for the public side of the site.
130	*
131	* Create an instance of the loader which will be used to register the hooks
132	* with WordPress.
133	*
134	* @since 1.0.0
135	* @access private
136	*/
137	private function load_dependencies()
138	{
139	// WordPress core — cannot be autoloaded.
140	require_once ABSPATH . 'wp-admin/includes/taxonomy.php';
141
142	// Procedural init file — not a class, must stay explicit.
143	if (file_exists(plugin_dir_path(dirname(__FILE__)) . 'google-index/google-index-init.php')) {
144	require_once plugin_dir_path(dirname(__FILE__)) . 'google-index/google-index-init.php';
145	} else {
146	error_log('MetaSync Google Index: google-index-init.php not found at ' . plugin_dir_path(dirname(__FILE__)) . 'google-index/google-index-init.php');
147	}
148
149	// Admin navigation is referenced statically from frontend-reachable
150	// includes (heartbeat/connect managers). Require it explicitly here so
151	// the static call never fatals when wp_head fires before autoload.
152	if (!class_exists('Metasync_Admin_Navigation')) {
153	require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-metasync-admin-navigation.php';
154	}
155
156	$this->loader = new Metasync_Loader();
157	$this->db_heartbeat_errors = new Metasync_HeartBeat_Error_Monitor_Database();
158	$this->db_redirection = new Metasync_Redirection_Database();
159	}
160
161	/**
162	* Define the locale for this plugin for internationalization.
163	*
164	* Uses the Metasync_i18n class in order to set the domain and to register the hook
165	* with WordPress.
166	*
167	* @since 1.0.0
168	* @access private
169	*/
170	// Language support removed - using default only
171	/*
172	private function set_locale()
173	{
174	$plugin_i18n = new Metasync_i18n();
175
176	$this->loader->add_action('plugins_loaded', $plugin_i18n, 'load_plugin_textdomain');
177	}
178	*/
179
180	/**
181	* Initialize the API Key Monitor for comprehensive API key change detection
182	*
183	* @since 1.0.0
184	* @access private
185	*/
186	private function init_api_key_monitor()
187	{
188	// Initialize the singleton instance of the API Key Monitor
189	// This will automatically set up hooks to monitor all API key changes
190	Metasync_API_Key_Monitor::get_instance();
191
192	// Log successful initialization
193	#commented out to stop appending this to error.php
194	# error_log('MetaSync: API Key Monitor initialized successfully');
195	}
196
197	/**
198	* Register all of the hooks related to the admin area functionality
199	* of the plugin.
200	*
201	* @since 1.0.0
202	* @access private
203	*/
204	private function define_admin_hooks()
205	{
206
207	$plugin_admin = new Metasync_Admin($this->get_plugin_name(), $this->get_version(), $this->database, $this->db_redirection, $this->db_heartbeat_errors); // , $this->data_error_log_list
208
209	// Initialize HTML Visual Editor
210	$html_visual_editor = new Metasync_HTML_Visual_Editor($this->get_plugin_name(), $this->get_version());
211	$html_visual_editor->init();
212
213	// Initialize OTTO Debug class for developers
214	if (class_exists('Metasync_Otto_Debug')) {
215	$otto_debug = new Metasync_Otto_Debug($this->get_plugin_name(), $this->get_version());
216	}
217
218	// Initialize SEO Sidebar for Gutenberg Block Editor
219	if (class_exists('Metasync_SEO_Sidebar')) {
220	new Metasync_SEO_Sidebar($this->get_version());
221	}
222
223	// Initialize Internal Link Suggestions for Gutenberg Block Editor
224	if (class_exists('Metasync_Link_Suggestions')) {
225	new Metasync_Link_Suggestions();
226	}
227
228	$this->loader->add_action('admin_enqueue_scripts', $plugin_admin, 'enqueue_styles');
229	$this->loader->add_action('admin_enqueue_scripts', $plugin_admin, 'enqueue_scripts');
230
231	# Redirection import AJAX handler
232	$redirection_handler = new Metasync_Redirection($this->db_redirection);
233	$this->loader->add_action('wp_ajax_metasync_import_redirections', $redirection_handler, 'handle_import_ajax');
234	$this->loader->add_action('wp_ajax_metasync_check_redirects_health', $redirection_handler, 'handle_health_check_ajax');
235
236	// HeartBeat API Receive Respond and Settings.
237	$this->loader->add_action('heartbeat_settings', $plugin_admin, 'metasync_heartbeat_settings');
238	$this->loader->add_action('heartbeat_received', $plugin_admin, 'metasync_received_data', 10, 2);
239	$this->loader->add_action('wp_ajax_metasync_send_customer_params', $plugin_admin, 'lgSendCustomerParams');
240
241	// Search Atlas Connect endpoints - authenticates with Search Atlas platform to retrieve SA API key and Otto UUID
242	$this->loader->add_action('wp_ajax_metasync_generate_connect_url', $plugin_admin, 'generate_searchatlas_connect_url');
243	$this->loader->add_action('wp_ajax_metasync_check_connect_status', $plugin_admin, 'check_searchatlas_connect_status');
244	$this->loader->add_action('wp_ajax_metasync_reset_authentication', $plugin_admin, 'reset_searchatlas_authentication');
245
246	// Auto-update filter
247	$this->loader->add_filter('auto_update_plugin', $plugin_admin, 'control_plugin_auto_updates', 10, 2);
248
249	// Search Atlas Connect development/testing endpoints
250	$this->loader->add_action('wp_ajax_metasync_test_enhanced_tokens', $plugin_admin, 'test_enhanced_searchatlas_tokens');
251	$this->loader->add_action('wp_ajax_metasync_test_whitelabel_domain', $plugin_admin, 'test_whitelabel_domain');
252	$this->loader->add_action('wp_ajax_metasync_test_ajax_endpoint', $plugin_admin, 'test_searchatlas_ajax_endpoint');
253	$this->loader->add_action('wp_ajax_metasync_simple_ajax_test', $plugin_admin, 'simple_ajax_test');
254
255
256	$post_meta_setting = new Metasync_Post_Meta_Settings();
257	$this->loader->add_action('admin_init', $post_meta_setting, 'add_post_meta_data', 2);
258	$this->loader->add_action('admin_init', $post_meta_setting, 'show_top_admin_bar', 9);
259
260	// SEO Health CSV export: must run on admin_init (before output).
261	// Cheap $_GET check avoids loading the class on every admin page.
262	if (
263	isset($_GET['page'], $_GET['export'], $_GET['_wpnonce']) &&
264	$_GET['export'] === 'csv' &&
265	strpos($_GET['page'], '-seo-health') !== false
266	) {
267	$this->loader->add_action('admin_init', Metasync_SEO_Health::get_instance(), 'handle_csv_export', 1);
268	}
269	$this->loader->add_action('wp', $post_meta_setting, 'show_top_admin_bar', 9);
270
271	// Initialize XML Sitemap auto-update hooks if enabled
272	// Note: Must not be gated by is_admin() because Gutenberg saves posts
273	// via the REST API where is_admin() returns false, and REST_REQUEST
274	// is not yet defined at plugin load time
275	if (get_option('metasync_sitemap_auto_update', false)) {
276	$sitemap_generator = new Metasync_Sitemap_Generator();
277	$sitemap_generator->setup_auto_update_hooks();
278	}
279	// Initialize Schema Markup functionality
280	$schema_markup = new Metasync_Schema_Markup($this->get_plugin_name(), $this->get_version());
281	$this->loader->add_action('wp_ajax_metasync_get_schema_fields', $schema_markup, 'ajax_get_schema_fields');
282	$this->loader->add_action('wp_ajax_metasync_preview_schema', $schema_markup, 'ajax_preview_schema');
283
284	// Initialize Breadcrumbs functionality
285	if (class_exists('Metasync_Breadcrumbs')) {
286	new Metasync_Breadcrumbs($this->get_plugin_name(), $this->get_version());
287	}
288	if (class_exists('Metasync_Breadcrumbs_Schema')) {
289	new Metasync_Breadcrumbs_Schema($this->get_plugin_name(), $this->get_version());
290	}
291
292	// Initialize Developer Panel (for endpoint switching)
293	if (class_exists('Metasync_Dev_Panel')) {
294	$dev_panel = new Metasync_Dev_Panel($this->get_plugin_name(), $this->get_version());
295	}
296
297	// Initialize Site Health integration
298	if (class_exists('Metasync_Site_Health')) {
299	$site_health = new Metasync_Site_Health();
300	$site_health->register_tests();
301	}
302
303	// Initialize endpoint URL filtering for staging mode
304	$this->init_endpoint_filtering();
305
306	}
307
308	/**
309	* Register all of the hooks related to the public-facing functionality
310	* of the plugin.
311	*
312	* @since 1.0.0
313	* @access private
314	*/
315	private function define_public_hooks()
316	{
317	// Header and Footer code snippets
318	$code_snippets = new Metasync_Code_Snippets();
319
320	$this->loader->add_action('wp_head', $code_snippets, 'get_header_snippet');
321	$this->loader->add_action('wp_footer', $code_snippets, 'get_footer_snippet');
322
323
324
325	$optimal_settings = new Metasync_Optimal_Settings();
326	$this->loader->add_filter('wp_robots', $optimal_settings, 'add_robots_meta');
327	$this->loader->add_action('the_content', $optimal_settings, 'add_attributes_external_links');
328
329	$plugin_public = new Metasync_Public($this->get_plugin_name(), $this->get_version());
330	$rest_api = $plugin_public->get_rest_api();
331	$seo_output = $plugin_public->get_seo_output();
332	$get_plugin_basename = sprintf('%1$s/%1$s.php', $this->plugin_name);
333
334	// Asset enqueue hooks (Metasync_Public)
335	$this->loader->add_action('wp_enqueue_scripts', $plugin_public, 'enqueue_styles');
336	$this->loader->add_action('wp_enqueue_scripts', $plugin_public, 'enqueue_scripts');
337	$this->loader->add_action('wp_enqueue_scripts', $plugin_public, 'enqueue_page_custom_css', 999);
338
339	// Elementor editor CSS injection
340	if (class_exists('\Elementor\Plugin')) {
341	$this->loader->add_action('elementor/preview/enqueue_styles', $plugin_public, 'enqueue_elementor_editor_css', 999);
342	}
343
344	// Divi builder CSS injection
345	if (function_exists('et_setup_theme')) {
346	$this->loader->add_action('wp_enqueue_scripts', $plugin_public, 'enqueue_divi_builder_css', 999);
347	}
348
349	// Initialize centralized SEO conflict handler (singleton — suppresses
350	// third-party SEO plugin descriptions when MetaSync provides its own).
351	Metasync_SEO_Conflict_Handler::get_instance();
352
353	// Term-level SEO plugin sync: propagate MetaSync term meta (category/tag
354	// archives) into Yoast/Rank Math/AIOSEO term storage on every write.
355	$this->loader->add_action('updated_term_meta', $this, 'on_term_meta_updated', 10, 4);
356	$this->loader->add_action('added_term_meta', $this, 'on_term_meta_updated', 10, 4);
357
358	// Post-level plugin sync (WP-196): propagate MetaSync post meta into
359	// Yoast/Rank Math/AIOSEO post storage on every write.
360	$this->loader->add_action('updated_post_meta', $this, 'on_post_meta_updated', 10, 4);
361	$this->loader->add_action('added_post_meta', $this, 'on_post_meta_updated', 10, 4);
362
363	// SEO Output hooks (Metasync_Seo_Output)
364	$this->loader->add_action('wp_head', $seo_output, 'hook_metasync_metatags', 1, 1);
365	$this->loader->add_action('template_redirect', $seo_output, 'inject_archive_seo_controls');
366
367	// Hreflang / language alternates output (wp_head @ priority 2).
368	$plugin_hreflang = new Metasync_Hreflang_Output();
369	$this->loader->add_action('wp_head', $plugin_hreflang, 'output_hreflang_tags', 2);
370
371	// Edge Cache: detect Cloudways Varnish and persist for settings UI
372	$this->loader->add_action('init', 'Metasync_Edge_Cache_Purge', 'detect_cloudways');
373
374	// Sitemap exclusions for disabled archive types
375	$this->loader->add_filter('wp_sitemaps_taxonomies', $seo_output, 'filter_sitemap_taxonomies');
376	$this->loader->add_filter('wp_sitemaps_users_entry', $seo_output, 'filter_sitemap_users', 10, 2);
377	$this->loader->add_filter('wp_sitemaps_add_provider', $seo_output, 'filter_sitemap_providers', 10, 2);
378	$this->loader->add_filter('wp_sitemaps_index_entry', $seo_output, 'filter_sitemap_index_entries', 10, 4);
379
380	// AMP cleanup functionality - remove metasync_optimized attribute from head on AMP pages
381	$this->loader->add_action('template_redirect', $seo_output, 'cleanup_amp_head_attribute', 1);
382	$this->loader->add_action('wp_footer', $seo_output, 'end_amp_head_cleanup', 999);
383
384	// Redirection functionality
385	$redirection = new Metasync_Redirection($this->db_redirection);
386	$this->loader->add_action('template_redirect', $redirection, 'handle_template_redirect', 5);
387
388	# Prevent WordPress from redirecting to draft posts via redirect_canonical
389	$this->loader->add_filter('redirect_canonical', $redirection, 'prevent_draft_post_redirects', 10, 2);
390
391	# Prevent WordPress old slug redirects to unpublished posts only
392	$this->loader->add_filter('old_slug_redirect_post_id', $redirection, 'prevent_old_slug_redirect_to_drafts', 10, 1);
393
394	// Auto-redirect on slug change - creates 301 redirect when post/page slug is changed
395	$auto_redirect = new Metasync_Auto_Redirect($this->db_redirection);
396	$auto_redirect->init();
397
398	# Custom HTML Pages functionality
399	# No additional loader hooks needed - class registers its own hooks
400	$custom_pages = new Metasync_Custom_Pages();
401
402	// 404 Error monitoring
403	$this->loader->add_action('template_redirect', $this, 'handle_404_monitoring', 10);
404	$this->loader->add_action('plugin_action_links_' . $get_plugin_basename, $plugin_public, 'metasync_plugin_links');
405
406	// REST API hooks (Metasync_Rest_Api)
407	$this->loader->add_action('rest_api_init', $rest_api, 'metasync_register_rest_routes');
408	$this->loader->add_action('init', $plugin_public, 'metasync_plugin_init', 5);
409	$this->loader->add_action('wp_ajax_metasync_lglogin', $rest_api, 'linkgraph_login');
410
411	// Robots meta filter (Metasync_Seo_Output)
412	$this->loader->add_filter('wp_robots', $seo_output, 'metasync_wp_robots_meta');
413
414
415
416	$metasyncTemplateClass = new Metasync_Template();
417	$this->loader->add_filter('theme_page_templates', $metasyncTemplateClass, 'metasync_template_landing_page', 10, 3);
418	$this->loader->add_filter('template_include', $metasyncTemplateClass, 'metasync_template_landing_page_load', 99 );
419	$templateCrawler = new MetaSyncHiddenPostManager(); # initialize the crawler class
420
421	$this->loader->add_action('wp_trash_post', $templateCrawler , 'prevent_post_deletion'); # Prevent post deletion when moved to trash
422	$this->loader->add_action('before_delete_post', $templateCrawler , 'prevent_post_deletion'); # Prevent permanent deletion
423	# $this->loader->add_filter('metasync_hidden_post_manager', $templateCrawler , 'init'); # run the crawler
424	# Hidden post manager now runs via cron instead of filter (to avoid interfering with post create/update)
425	$this->loader->add_action('metasync_hidden_post_check', $templateCrawler , 'init'); # run the crawler via cron
426
427	// Open Graph and Social Media Tags
428	$opengraph = new Metasync_OpenGraph($this->get_plugin_name(), $this->get_version());
429	$opengraph->init();
430
431	# Save current theme info to database (safe context - admin/init hooks)
432	$this->loader->add_action('after_switch_theme', $this, 'save_current_theme_info');
433	$this->loader->add_action('admin_init', $this, 'ensure_theme_info_saved');
434
435	// OTTO Frontend Toolbar
436	$otto_toolbar = new Metasync_Otto_Frontend_Toolbar($this->get_plugin_name(), $this->get_version());
437	$this->loader->add_action('wp_enqueue_scripts', $otto_toolbar, 'enqueue_styles');
438	$this->loader->add_action('wp_enqueue_scripts', $otto_toolbar, 'enqueue_scripts');
439	$this->loader->add_action('admin_bar_menu', $otto_toolbar, 'add_admin_bar_menu', 100);
440	$this->loader->add_action('wp_footer', $otto_toolbar, 'render_debug_bar', 999);
441
442	// Initialize Sitemap Generator on frontend (for virtual sitemap serving)
443	$sitemap_generator = new Metasync_Sitemap_Generator();
444
445	// Initialize LLMs.txt Generator (for virtual /llms.txt and /llms-full.txt serving)
446	require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-metasync-html-to-markdown.php';
447	require_once plugin_dir_path(dirname(__FILE__)) . 'llms-txt/class-metasync-llms-txt-generator.php';
448	$llms_txt_generator = new Metasync_Llms_Txt_Generator();
449
450	// Serve the IndexNow key file virtually at /{key}.txt (WP-511) so it works
451	// on read-only web roots and nginx hosts that 403 direct static .txt access.
452	require_once plugin_dir_path(dirname(__FILE__)) . 'bing-index/class-metasync-bing-instant-index.php';
453	add_action('template_redirect', array('Metasync_Bing_Instant_Index', 'serve_virtual_key_file'), 0);
454
455	// One-time upgrade: regenerate sitemap to remove any Beaver Builder template entries
456	if ( ! get_option( 'metasync_sitemap_bb_exclusion_applied' ) ) {
457	$this->loader->add_action('init', $this, 'maybe_regenerate_sitemap_after_upgrade');
458	}
459	}
460
461	/**
462	* One-time upgrade routine: regenerate the XML sitemap so that Beaver Builder
463	* template post types (fl-builder-template, fl-theme-layout) that were already
464	* present in previously-generated sitemaps are purged.
465	*
466	* Runs once on 'init' and sets a flag so it never runs again.
467	*
468	* @since 1.0.0
469	*/
470	public function maybe_regenerate_sitemap_after_upgrade() {
471	$done_key = 'metasync_sitemap_bb_exclusion_applied';
472	if ( get_option( $done_key ) ) {
473	return;
474	}
475
476	// Only regenerate if the custom sitemap feature is actually in use.
477	if ( get_option( 'metasync_sitemap_auto_update', false ) \|\| file_exists( ABSPATH . 'sitemap_index.xml' ) ) {
478	if ( ! class_exists( 'Metasync_Sitemap_Generator' ) ) {
479	require_once plugin_dir_path( dirname( __FILE__ ) ) . 'sitemap/class-metasync-sitemap-generator.php';
480	}
481	$sitemap = new Metasync_Sitemap_Generator();
482	$sitemap->generate_sitemap();
483	update_option( $done_key, true );
484	}
485	// If sitemap is not in use, don't set the flag — retry on next load
486	// so that enabling sitemaps later will still clean up BB templates.
487	}
488
489	/**
490	* Initialize endpoint URL filtering for staging mode
491	* Intercepts HTTP requests and replaces production URLs with staging URLs
492	*/
493	private function init_endpoint_filtering() {
494	// Only add filter if Endpoint Manager is available and staging mode is active
495	if (!class_exists('Metasync_Endpoint_Manager') \|\| !Metasync_Endpoint_Manager::is_staging_mode()) {
496	return;
497	}
498
499	// Add filter to intercept HTTP requests before they're sent
500	add_filter('pre_http_request', array($this, 'filter_http_request_urls'), 10, 3);
501	}
502
503	/**
504	* Filter HTTP request URLs to replace production endpoints with staging
505	*
506	* @param false\|array\|WP_Error $preempt Whether to preempt an HTTP request's return value.
507	* @param array $args HTTP request arguments.
508	* @param string $url The request URL.
509	* @return false\|array\|WP_Error
510	*/
511	public function filter_http_request_urls($preempt, $args, $url) {
512	// Only process if we're not preempting the request
513	if ($preempt !== false) {
514	return $preempt;
515	}
516
517	// Only process if staging mode is active
518	if (!class_exists('Metasync_Endpoint_Manager') \|\| !Metasync_Endpoint_Manager::is_staging_mode()) {
519	return $preempt;
520	}
521
522	// Define URL replacements (production => staging)
523	$url_replacements = array(
524	'https://dashboard.searchatlas.com' => 'https://dashboard.staging.searchatlas.com',
525	'https://api.searchatlas.com' => 'https://api.staging.searchatlas.com',
526	'https://ca.searchatlas.com' => 'https://ca.staging.searchatlas.com',
527	'https://sa.searchatlas.com' => 'https://sa.staging.searchatlas.com',
528	);
529
530	// Check if URL needs to be replaced
531	$original_url = $url;
532	foreach ($url_replacements as $production => $staging) {
533	if (strpos($url, $production) === 0) {
534	$url = str_replace($production, $staging, $url);
535	error_log("MetaSync Endpoint Filter: Replaced {$production} with {$staging} in URL: {$original_url}");
536	break;
537	}
538	}
539
540	// If URL was changed, modify the args and make the request ourselves
541	if ($url !== $original_url) {
542	// Make the request with the modified URL
543	return wp_remote_request($url, $args);
544	}
545
546	return $preempt;
547	}
548
549	/**
550	* Term meta update hook: mirror MetaSync term meta (`_metasync_*`)
551	* into the active third-party SEO plugins' term storage.
552	*
553	* Registered on both `updated_term_meta` and `added_term_meta` so new
554	* fields are synced the first time they are written as well as on
555	* subsequent updates.
556	*
557	* @param int $meta_id Meta row ID (unused).
558	* @param int $object_id Term ID.
559	* @param string $meta_key Meta key being written.
560	* @param mixed $meta_value Meta value being written.
561	*/
562	public function on_term_meta_updated($meta_id, $object_id, $meta_key, $meta_value) {
563	if (strncmp($meta_key, '_metasync_', 10) !== 0) {
564	return;
565	}
566
567	if (!class_exists('Metasync_Term_Plugin_Sync')) {
568	return;
569	}
570
571	$term = get_term((int) $object_id);
572	if (!$term \|\| is_wp_error($term)) {
573	return;
574	}
575
576	$canonical_map = [
577	'_metasync_metatitle' => 'title',
578	'_metasync_metadesc' => 'desc',
579	'_metasync_robots_index' => 'noindex',
580	'_metasync_canonical_url' => 'canonical',
581	'_metasync_og_title' => 'og_title',
582	'_metasync_og_description' => 'og_desc',
583	'_metasync_og_image' => 'og_image',
584	'_metasync_twitter_title' => 'twitter_title',
585	'_metasync_twitter_description' => 'twitter_desc',
586	];
587
588	if (!isset($canonical_map[$meta_key])) {
589	return;
590	}
591
592	$canonical_key = $canonical_map[$meta_key];
593
594	Metasync_Term_Plugin_Sync::get_instance()->sync_term(
595	(int) $object_id,
596	(string) $term->taxonomy,
597	[$canonical_key => $meta_value]
598	);
599	}
600
601	/**
602	* Post meta update hook: mirror MetaSync post meta (`_metasync_*`)
603	* into the active third-party SEO plugins' post storage.
604	*
605	* Registered on both `updated_post_meta` and `added_post_meta` so new
606	* fields are synced the first time they are written as well as on
607	* subsequent updates.
608	*
609	* @param int $meta_id Meta row ID (unused).
610	* @param int $post_id Post ID.
611	* @param string $meta_key Meta key being written.
612	* @param mixed $meta_value Meta value being written.
613	*/
614	public function on_post_meta_updated($meta_id, $post_id, $meta_key, $meta_value) {
615	if (!class_exists('Metasync_Plugin_Sync')) {
616	return;
617	}
618
619	Metasync_Plugin_Sync::get_instance()->on_meta_updated($meta_id, $post_id, $meta_key, $meta_value);
620	}
621
622	/**
623	* Save current theme information to MetaSync options
624	* This runs in WordPress admin context, not during REST API requests
625	* Safe to use wp_get_theme() here
626	*/
627	public function save_current_theme_info() {
628	$theme = wp_get_theme();
629	$metasync_data = self::get_option();
630
631	if (!isset($metasync_data['general'])) {
632	$metasync_data['general'] = array();
633	}
634
635	$metasync_data['general']['current_theme_name'] = $theme->get('Name');
636	$metasync_data['general']['current_theme_template'] = $theme->get_template();
637	$metasync_data['general']['theme_info_updated'] = time();
638
639	self::set_option($metasync_data);
640	}
641
642	/**
643	* Ensure theme info is saved on admin_init if not already saved
644	* This ensures theme info is available even if theme wasn't switched
645	*/
646	public function ensure_theme_info_saved() {
647	$metasync_data = self::get_option('general');
648
649	# Only run once per day to avoid overhead
650	if (empty($metasync_data['theme_info_updated']) \|\|
651	(time() - $metasync_data['theme_info_updated']) > 86400) {
652	$this->save_current_theme_info();
653	}
654	}
655
656	public static function get_option($key = null, $default = null)
657	{
658	$options = get_option(Metasync::option_name);
659	if (empty($options)) $options = [];
660	if ($key === null) return $options;
661	return $options[$key] ?? ($default !== null ? $default : null);
662	}
663
664	public static function set_option($data)
665	{
666	#return update_option(Metasync::option_name, $data);
667	$result = update_option(Metasync::option_name, $data);
668
669	// NEW: Structured error logging for database errors (only log if it's a real DB error)
670	global $wpdb;
671	if ($result === false && class_exists('Metasync_Error_Logger') && !empty($wpdb->last_error)) {
672	// Check if it's actually a database error (not just same value)
673	$saved_data = get_option(Metasync::option_name);
674	if ($saved_data !== $data) {
675	// Value is different but save failed - this is a real database error
676	Metasync_Error_Logger::log(
677	Metasync_Error_Logger::CATEGORY_DATABASE_ERROR,
678	Metasync_Error_Logger::SEVERITY_ERROR,
679	'Failed to save plugin main options to database',
680	[
681	'option_name' => Metasync::option_name,
682	'wpdb_error' => $wpdb->last_error,
683	'wpdb_last_query' => $wpdb->last_query,
684	'operation' => 'set_option',
685	'has_api_key' => !empty($data['general']['searchatlas_api_key'] ?? null),
686	'has_auth_token' => !empty($data['general']['apikey'] ?? null)
687	]
688	);
689	}
690	}
691
692	return $result;
693	}
694
695	/**
696	* Read the heartbeat throttle state from its dedicated option.
697	*
698	* Backfills from the legacy location (`metasync_options['general']`) the
699	* first time the dedicated option is empty, so existing installs keep
700	* their throttle history across the migration.
701	*/
702	public static function get_heartbeat_throttle(): array
703	{
704	$value = get_option(self::heartbeat_throttle_option, []);
705	if (is_array($value) && !empty($value)) {
706	return $value;
707	}
708
709	$general = self::get_option('general');
710	if (is_array($general) && (array_key_exists('last_heart_beat', $general) \|\| array_key_exists('last_heartbeat_at', $general))) {
711	$throttle = [
712	'last_heart_beat' => $general['last_heart_beat'] ?? 0,
713	'last_heartbeat_at' => $general['last_heartbeat_at'] ?? null,
714	];
715	update_option(self::heartbeat_throttle_option, $throttle);
716	return $throttle;
717	}
718
719	return [];
720	}
721
722	/**
723	* Merge fields into the dedicated heartbeat throttle option.
724	*
725	* Writes via update_option directly so the main metasync_options blob is
726	* never read or rewritten — avoiding the read-modify-write race with
727	* concurrent settings saves.
728	*/
729	public static function set_heartbeat_throttle(array $fields): void
730	{
731	$existing = get_option(self::heartbeat_throttle_option, []);
732	if (!is_array($existing)) {
733	$existing = [];
734	}
735	$merged = array_merge($existing, $fields);
736	update_option(self::heartbeat_throttle_option, $merged);
737	}
738
739	/**
740	* Get whitelabel settings
741	* Helper method to retrieve whitelabel configuration
742	*/
743	public static function get_whitelabel_settings()
744	{
745	$whitelabel = self::get_option('whitelabel');
746	return is_array($whitelabel) ? $whitelabel : array(
747	'is_whitelabel' => false,
748	'domain' => '',
749	'logo' => '',
750	'logo_light' => '',
751	'logo_dark' => '',
752	'company_name' => '',
753	'color_palette' => array(),
754	'updated_at' => 0
755	);
756	}
757
758	/**
759	* Check if whitelabel mode is enabled
760	*/
761	public static function is_whitelabel_enabled()
762	{
763	$whitelabel = self::get_whitelabel_settings();
764	return isset($whitelabel['is_whitelabel']) && $whitelabel['is_whitelabel'] === true;
765	}
766
767	/**
768	* Get effective dashboard domain for the plugin
769	* Returns whitelabel domain if set (regardless of is_whitelabel flag), otherwise respects staging/production mode
770	*/
771	public static function get_dashboard_domain()
772	{
773	$whitelabel = self::get_whitelabel_settings();
774
775	// Priority 1: Use whitelabel domain if it's not empty (regardless of is_whitelabel flag)
776	if (!empty($whitelabel['domain'])) {
777	return $whitelabel['domain'];
778	}
779
780	// Priority 2: Use endpoint manager to respect staging/production mode
781	if (class_exists('Metasync_Endpoint_Manager')) {
782	return Metasync_Endpoint_Manager::get_endpoint('DASHBOARD_DOMAIN');
783	}
784
785	// Priority 3: Fallback to production default domain
786	return self::DASHBOARD_DOMAIN;
787	}
788
789	/**
790	* Get whitelabel logo URL
791	* Returns the whitelabel logo URL if logo is set
792	*/
793	public static function get_whitelabel_logo()
794	{
795	$whitelabel = self::get_whitelabel_settings();
796
797	// Return logo if it's set and is a valid URL
798	// Users should be able to set a custom logo without requiring a custom domain
799	if (!empty($whitelabel['logo'])) {
800	return $whitelabel['logo'];
801	}
802
803	return null;
804	}
805
806	/**
807	* Get whitelabel logo URL for light theme
808	* Falls back to legacy 'logo' field if logo_light is not set
809	*/
810	public static function get_whitelabel_logo_light()
811	{
812	$whitelabel = self::get_whitelabel_settings();
813
814	if (!empty($whitelabel['logo_light'])) {
815	return $whitelabel['logo_light'];
816	}
817
818	if (!empty($whitelabel['logo'])) {
819	return $whitelabel['logo'];
820	}
821
822	return null;
823	}
824
825	/**
826	* Get whitelabel logo URL for dark theme
827	* Falls back to legacy 'logo' field if logo_dark is not set
828	*/
829	public static function get_whitelabel_logo_dark()
830	{
831	$whitelabel = self::get_whitelabel_settings();
832
833	if (!empty($whitelabel['logo_dark'])) {
834	return $whitelabel['logo_dark'];
835	}
836
837	if (!empty($whitelabel['logo'])) {
838	return $whitelabel['logo'];
839	}
840
841	return null;
842	}
843
844	/**
845	* Get whitelabel company name
846	* Returns the whitelabel company name if whitelabel is active and company name is set
847	*/
848	public static function get_whitelabel_company_name()
849	{
850	$whitelabel = self::get_whitelabel_settings();
851
852	// Return company name only if whitelabel is active and company name is set
853	if (isset($whitelabel['is_whitelabel']) && $whitelabel['is_whitelabel'] === true && !empty($whitelabel['company_name'])) {
854	return $whitelabel['company_name'];
855	}
856
857	return null;
858	}
859
860	/**
861	* Get whitelabel OTTO name
862	* Returns the custom OTTO name if set, otherwise returns 'OTTO'
863	*/
864	public static function get_whitelabel_otto_name()
865	{
866	$general_settings = self::get_option('general');
867
868	// Return custom OTTO name if set, otherwise fallback to 'OTTO'
869	if (!empty($general_settings['whitelabel_otto_name'])) {
870	return $general_settings['whitelabel_otto_name'];
871	}
872
873	return 'OTTO';
874	}
875
876	/**
877	* Check if the current user has access to the plugin based on role settings
878	*
879	* @return bool True if user has access, false otherwise
880	*/
881	public static function current_user_has_plugin_access()
882	{
883	$user = wp_get_current_user();
884	if (!$user \|\| !$user->exists()) {
885	return false;
886	}
887
888	// Administrators always have access
889	if (in_array('administrator', (array) $user->roles)) {
890	return true;
891	}
892
893	// Get the plugin access roles setting
894	$general_options = self::get_option('general');
895
896	// If setting not configured, default to admin-only access
897	if (!isset($general_options['plugin_access_roles'])) {
898	return false;
899	}
900
901	$allowed_roles = $general_options['plugin_access_roles'];
902
903	// If it's a string (single role), convert to array
904	if (!is_array($allowed_roles)) {
905	$allowed_roles = array($allowed_roles);
906	}
907
908	// If "all" is selected, allow access
909	if (in_array('all', $allowed_roles)) {
910	return true;
911	}
912
913	// If array is empty, deny access (only admins allowed)
914	if (empty($allowed_roles)) {
915	return false;
916	}
917
918	// Check if user has any of the allowed roles
919	$user_roles = (array) $user->roles;
920	return !empty(array_intersect($user_roles, $allowed_roles));
921	}
922
923	/**
924	* Get active JWT token for Search Atlas API authentication
925	* Convenience method accessible from anywhere in the plugin
926	*
927	* @param bool $force_refresh Force generation of new token even if cached one exists
928	* @return string\|false JWT token on success, false on failure
929	*/
930	public static function get_jwt_token($force_refresh = false)
931	{
932	// Delegate to admin class method
933	return Metasync_Admin::get_active_jwt_token($force_refresh);
934	}
935
936	/**
937	* Get effective plugin name
938	* Returns plugin name respecting white label settings
939	* Priority: 1) white_label_plugin_name 2) company branding + base_name 3) base_name
940	*/
941	public static function get_effective_plugin_name($base_name = 'Search Atlas')
942	{
943	$general_settings = self::get_option('general');
944
945	// Priority 1: Use white_label_plugin_name if set and not empty
946	if (!empty($general_settings['white_label_plugin_name'])) {
947	return $general_settings['white_label_plugin_name'];
948	}
949
950	$whitelabel = self::get_whitelabel_settings();
951
952	// Priority 2: If whitelabel is enabled and company name is provided, enhance the plugin name
953	if (isset($whitelabel['is_whitelabel']) && $whitelabel['is_whitelabel'] === true && !empty($whitelabel['company_name'])) {
954	return $whitelabel['company_name'] . ' ' . $base_name;
955	}
956
957	// Priority 3: Return base_name as fallback
958	return $base_name;
959	}
960
961	/**
962	* Centralized API Key Event Logging
963	* Provides structured logging for all API key related events with consistent formatting
964	*
965	* @since 1.0.0
966	* @param string $event_type Type of event (change, refresh, reset, etc.)
967	* @param string $api_key_type Type of API key (plugin_auth_token, searchatlas_api_key)
968	* @param array $details Additional details about the event
969	* @param string $level Log level (info, warning, error)
970	*/
971	public static function log_api_key_event($event_type, $api_key_type, $details = array(), $level = 'info')
972	{
973	try {
974	// Build structured log entry
975	$log_data = array(
976	'timestamp' => current_time('mysql'),
977	'event_type' => $event_type,
978	'api_key_type' => $api_key_type,
979	'level' => $level
980	);
981
982	// Add details if provided
983	if (!empty($details)) {
984	$log_data['details'] = $details;
985	}
986
987	// Format log message with consistent structure
988	$log_prefix = strtoupper($level) . ' - MetaSync API Key Event';
989	$log_message = sprintf('[%s] %s: %s (%s)',
990	$log_data['timestamp'],
991	$log_prefix,
992	$event_type,
993	$api_key_type
994	);
995
996	// Add details to log message if present
997	if (!empty($details)) {
998	$formatted_details = array();
999	foreach ($details as $key => $value) {
1000	$formatted_details[] = $key . ': ' . (is_string($value) ? $value : json_encode($value));
1001	}
1002	$log_message .= ' - ' . implode(', ', $formatted_details);
1003	}
1004
1005
1006	// Optionally store in database for admin dashboard (future enhancement)
1007	// This could be extended to store in a dedicated log table
1008
1009	} catch (Exception $e) {
1010	// Fallback logging if structured logging fails
1011	error_log('MetaSync API Key Event Logging Error: ' . $e->getMessage());
1012	}
1013	}
1014
1015	/**
1016	* Handle 404 error monitoring
1017	*/
1018	public function handle_404_monitoring()
1019	{
1020	// Only process on frontend
1021	if (is_admin()) {
1022	return;
1023	}
1024
1025	// Check if this is a 404 error
1026	if (!is_404()) {
1027	return;
1028	}
1029
1030	// PROTECTION 0: Skip WordPress system paths — these are not "broken links"
1031	$request_uri = $_SERVER['REQUEST_URI'] ?? '';
1032	$skip_prefixes = [
1033	'/wp-json/',
1034	'/wp-admin/',
1035	'/feed/',
1036	'/xmlrpc.php',
1037	'/wp-login.php',
1038	'/wp-cron.php',
1039	];
1040	foreach ($skip_prefixes as $prefix) {
1041	if (stripos($request_uri, $prefix) === 0) {
1042	return;
1043	}
1044	}
1045
1046	// PROTECTION 1: Exclude static assets to reduce noise
1047	$static_extensions = ['.css', '.js', '.jpg', '.jpeg', '.png', '.gif', '.ico', '.svg', '.woff', '.woff2', '.ttf', '.eot', '.map','.webp'];
1048	foreach ($static_extensions as $ext) {
1049	if (stripos($request_uri, $ext) !== false) {
1050	return; // Skip logging static asset 404s
1051	}
1052	}
1053
1054	// PROTECTION 2: Bot detection - Block known bot patterns
1055	$user_agent = $_SERVER['HTTP_USER_AGENT'] ?? '';
1056	$bot_patterns = ['bot', 'crawler', 'spider', 'scraper', 'curl', 'wget', 'python', 'java'];
1057	foreach ($bot_patterns as $pattern) {
1058	if (stripos($user_agent, $pattern) !== false) {
1059	// Rate limit bot 404s more aggressively
1060	$bot_rate_key = 'metasync_404_bot_rate';
1061	$bot_hits = get_transient($bot_rate_key);
1062	if ($bot_hits !== false && $bot_hits >= 10) {
1063	// Bot has hit 10+ 404s in last minute - stop logging
1064	return;
1065	}
1066	set_transient($bot_rate_key, $bot_hits === false ? 1 : $bot_hits + 1, 60);
1067	break;
1068	}
1069	}
1070
1071	// PROTECTION 3: Global rate limiting - Prevent 404 logging storms
1072	$global_rate_key = 'metasync_404_global_rate';
1073	$global_hits = get_transient($global_rate_key);
1074	if ($global_hits !== false && $global_hits >= 50) {
1075	// More than 50 404s per minute - stop logging to protect database
1076	if ($global_hits === 50) {
1077	error_log('MetaSync 404 Monitor: Rate limit exceeded - 50+ 404s per minute. Pausing logging.');
1078	}
1079	set_transient($global_rate_key, $global_hits + 1, 60);
1080	return;
1081	}
1082	set_transient($global_rate_key, $global_hits === false ? 1 : $global_hits + 1, 60);
1083
1084	// Get current URL
1085	$current_url = $this->get_current_url();
1086
1087	// PROTECTION 4: Per-URL caching - Prevent same URL from being logged repeatedly
1088	$url_cache_key = 'metasync_404_cached_' . md5($current_url);
1089	if (get_transient($url_cache_key)) {
1090	// This URL was already logged in last 5 minutes - skip DB write
1091	return;
1092	}
1093
1094	// PROTECTION 5: URL validation - Skip obviously malicious URLs
1095	if (strlen($current_url) > 500 \|\| preg_match('/[<>{}\\\\\|]/', $current_url)) {
1096	return; // Skip potentially malicious or malformed URLs
1097	}
1098
1099	// Initialize 404 monitor database
1100	require_once plugin_dir_path(dirname(__FILE__)) . '404-monitor/class-metasync-404-monitor-database.php';
1101	$db_404 = new Metasync_Error_Monitor_Database();
1102
1103	// Get user agent (sanitized)
1104	$user_agent = isset($_SERVER['HTTP_USER_AGENT']) ? sanitize_text_field($_SERVER['HTTP_USER_AGENT']) : '';
1105
1106	// Log the 404 error
1107	$result = $db_404->update([
1108	'uri' => $current_url,
1109	'user_agent' => $user_agent,
1110	'date_time' => current_time('mysql'),
1111	'hits_count' => 1
1112	]);
1113
1114	// Cache this URL for 5 minutes to prevent repeated DB writes
1115	set_transient($url_cache_key, true, 300);
1116	}
1117
1118	/**
1119	* Get current URL
1120	*/
1121	private function get_current_url()
1122	{
1123	$protocol = is_ssl() ? 'https://' : 'http://';
1124
1125	// Safely get HTTP_HOST with fallback
1126	$host = isset($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : '';
1127	if (empty($host) && isset($_SERVER['SERVER_NAME'])) {
1128	$host = $_SERVER['SERVER_NAME'];
1129	}
1130	if (empty($host)) {
1131	// Fallback to WordPress site URL if available
1132	$host = parse_url(home_url(), PHP_URL_HOST);
1133	}
1134
1135	// Safely get REQUEST_URI with fallback
1136	$uri = isset($_SERVER['REQUEST_URI']) ? $_SERVER['REQUEST_URI'] : '/';
1137
1138	// Decode URL-encoded characters
1139	$uri = urldecode($uri);
1140
1141	// Ensure URI starts with /
1142	if (!str_starts_with($uri, '/')) {
1143	$uri = '/' . $uri;
1144	}
1145
1146	return $protocol . $host . $uri;
1147	}
1148
1149	/**
1150	* Run the loader to execute all of the hooks with WordPress.
1151	*
1152	* @since 1.0.0
1153	*/
1154	public function run()
1155	{
1156	$this->loader->run();
1157	}
1158
1159	/**
1160	* The name of the plugin used to uniquely identify it within the context of
1161	* WordPress and to define internationalization functionality.
1162	*
1163	* @since 1.0.0
1164	* @return string The name of the plugin.
1165	*/
1166	public function get_plugin_name()
1167	{
1168	return $this->plugin_name;
1169	}
1170
1171	/**
1172	* The reference to the class that orchestrates the hooks with the plugin.
1173	*
1174	* @since 1.0.0
1175	* @return Metasync_Loader Orchestrates the hooks of the plugin.
1176	*/
1177	public function get_loader()
1178	{
1179	return $this->loader;
1180	}
1181
1182	/**
1183	* Retrieve the version number of the plugin.
1184	*
1185	* @since 1.0.0
1186	* @return string The version number of the plugin.
1187	*/
1188	public function get_version()
1189	{
1190	return $this->version;
1191	}
1192	}
1193