← All changes | includes/Core/Request.php +1821 -159 3.4.1 → 4.9.2 View file →

		@@ -1,65 +1,80 @@
1	1	<?php
	2	+namespace WPDeveloper\BetterDocs\Core;
2	3
3		-namespace WPDeveloper\BetterDocs\Core;
	4	+if ( ! defined( 'ABSPATH' ) ) {
	5	+ exit;
	6	+}
4	7
	8	+
5	9	use WPDeveloper\BetterDocs\Utils\Base;
	10	+use WPDeveloper\BetterDocs\Utils\Helper;
6	11
7	12	class Request extends Base {
8		- /**
9		- * Flag for already parsed or not
10		- *
11		- * Specially needed for those who don't update pro yet.
12		- * @var boolean
13		- */
14		- protected static $already_parsed = false;
	13	+ /**
	14	+ * Flag for already parsed or not
	15	+ *
	16	+ * Specially needed for those who don't update pro yet.
	17	+ * @var boolean
	18	+ */
	19	+ protected static $already_parsed = false;
15	20
16		- /**
17		- * List of BetterDocs Perma Structure
18		- * @var array
19		- */
20		- private $perma_structure = [];
	21	+ /**
	22	+ * List of BetterDocs Perma Structure
	23	+ * @var array
	24	+ */
	25	+ private $perma_structure = [];
21	26
22		- /**
23		- * List of BetterDocs Query Vars Agains Page Structure.
24		- * @var array
25		- */
26		- private $query_vars = [];
	27	+ /**
	28	+ * List of BetterDocs Query Vars Agains Page Structure.
	29	+ * @var array
	30	+ */
	31	+ private $query_vars = [];
27	32
28		- /**
29		- * List of Query Variables from $wp->query_vars.
30		- * @var array
31		- */
32		- private $wp_query_vars = [];
	33	+ /**
	34	+ * List of Query Variables from $wp->query_vars.
	35	+ * @var array
	36	+ */
	37	+ private $wp_query_vars = [];
33	38
34		- /**
35		- * Rewrite Class Reference of BetterDocs
36		- * @var Rewrite
37		- */
38		- protected $rewrite;
	39	+ /**
	40	+ * Stores query vars from a request that was rejected as invalid (wrong KB/category slug).
	41	+ * Used to block canonical redirects for those invalid URLs.
	42	+ * @var array|null
	43	+ */
	44	+ private $invalid_request_query_vars = null;
39	45
40		- /**
41		- * Settings Class Reference of BetterDocs
42		- * @var Settings
43		- */
44		- protected $settings;
	46	+ /**
	47	+ * Rewrite Class Reference of BetterDocs
	48	+ * @var Rewrite
	49	+ */
	50	+ protected $rewrite;
45	51
46		- public function __construct( Rewrite $rewrite, Settings $settings ) {
47		- $this->rewrite = $rewrite;
48		- $this->settings = $settings;
49		- }
	52	+ /**
	53	+ * Settings Class Reference of BetterDocs
	54	+ * @var Settings
	55	+ */
	56	+ protected $settings;
50	57
51		- public function init() {
52		- if ( is_admin() ) {
53		- return;
54		- }
	58	+ public function __construct( Rewrite $rewrite, Settings $settings ) {
	59	+ $this->rewrite = $rewrite;
	60	+ $this->settings = $settings;
	61	+ }
55	62
	63	+ public function init() {
	64	+ if ( is_admin() ) {
	65	+ return;
	66	+ }
	67	+
	68	+ add_action( 'template_redirect', [ $this, 'validate_request_path' ], 1 );
	69	+
56	70	$this->perma_structure = [
57	71	'is_docs' => trim( $this->rewrite->get_base_slug(), '/' ),
58	72	'is_docs_feed' => trim( $this->rewrite->get_base_slug(), '/' ) . '/%feed%',
59	73	'is_docs_category' => trim( $this->settings->get( 'category_slug', 'docs-category' ), '/' ) . '/%doc_category%',
60	74	'is_docs_tag' => trim( $this->settings->get( 'tag_slug', 'docs-tag' ), '/' ) . '/%doc_tag%',
61		- 'is_single_docs' => trim( $this->settings->get( 'permalink_structure', 'docs' ), '/' ) . '/%name%'
	75	+ 'is_single_docs' => trim( $this->settings->get( 'permalink_structure', 'docs' ), '/' ) . '/%name%',
	76	+ 'is_docs_author' => trim( $this->rewrite->get_base_slug(), '/' ) . '/authors/%author%'
62	77	];
63	78
64	79	$this->query_vars = [
65	80	'is_docs' => ['post_type'],
		@@ -65,179 +80,1826 @@
65	80	'is_docs' => ['post_type'],
66	81	'is_docs_feed' => ['doc_category'],
67	82	'is_docs_category' => ['doc_category'],
68	83	'is_docs_tag' => ['doc_tag'],
69		- 'is_single_docs' => ['name', 'docs', 'post_type']
	84	+ 'is_single_docs' => ['name', 'docs', 'post_type'],
	85	+ 'is_docs_author' => ['post_type', 'author']
70	86	];
71	87
72		- add_action( 'parse_request', [$this, 'parse'] );
	88	+ add_action( 'parse_request', [ $this, 'parse' ] );
73	89
74		- /**
75		- * This is for Backward compatibility if pro not updated.
76		- */
77		- add_action( 'parse_request', [$this, 'backward_compability'], 11 );
	90	+ /**
	91	+ * Hook into pre_get_posts to set up taxonomy queries for category archives
	92	+ */
	93	+ add_action( 'pre_get_posts', [ $this, 'setup_taxonomy_query' ], 1 );
78	94
79		- /**
80		- * Make Compatible With Permalink Manager Plugin
81		- */
82		- add_filter( 'permalink_manager_detected_element_id', [$this, 'provide_compatibility'], 10, 3 );
83		- }
	95	+ /**
	96	+ * Hook into pre_get_posts at priority 20 to enforce 404 for invalid KB/category slugs.
	97	+ * This runs before WordPress resolves templates but after parse_request sets query vars.
	98	+ */
	99	+ add_action( 'pre_get_posts', [ $this, 'enforce_404_for_invalid_docs' ], 20 );
84	100
85		- public function provide_compatibility( $element_id, $uri_parts, $request_url ) {
86		- if ( $request_url == $this->settings->get( 'docs_slug' ) ) {
87		- $element_id = '';
88		- }
89		- return $element_id;
90		- }
	101	+ /**
	102	+ * Hook into template_redirect to re-apply taxonomy query flags
	103	+ * This runs after pre_get_posts to ensure the flags stick
	104	+ */
	105	+ add_action( 'template_redirect', [ $this, 'reapply_taxonomy_flags' ], 1 );
91	106
92		- protected function is_docs( &$query_vars ) {
93		- if ( ! $this->settings->get( 'builtin_doc_page', true ) ) {
94		- $query_vars['post_type'] = 'page';
95		- $query_vars['name'] = trim( $this->rewrite->get_base_slug(), '/' );
96		- }
	107	+ /**
	108	+ * Hook into status_header to prevent 404 for valid taxonomy archives
	109	+ */
	110	+ add_filter( 'status_header', [ $this, 'prevent_404_status' ], 10, 2 );
97	111
98		- return $query_vars;
99		- }
	112	+ /**
	113	+ * Hook into wp to ensure tax_query is always initialized
	114	+ * This prevents null reference errors from WPML and other plugins
	115	+ */
	116	+ add_action( 'wp', [ $this, 'ensure_tax_query_initialized' ], 1 );
100	117
101		- public function is_docs_feed( $query_vars ) {
102		- global $wp_rewrite;
103		- return isset( $query_vars['feed'] ) && in_array( $query_vars['feed'], $wp_rewrite->feeds );
	118	+ /**
	119	+ * This is for Backward compatibility if pro not updated.
	120	+ */
	121	+ add_action( 'parse_request', [ $this, 'backward_compability' ], 11 );
	122	+
	123	+ /**
	124	+ * Make Compatible With Permalink Manager Plugin
	125	+ */
	126	+ add_filter( 'permalink_manager_detected_element_id', [ $this, 'provide_compatibility' ], 10, 3 );
	127	+
	128	+ /**
	129	+ * Hook into redirect_canonical to prevent redirects for invalid category-post combinations
	130	+ */
	131	+ add_filter( 'redirect_canonical', [ $this, 'prevent_canonical_redirect_for_invalid_docs' ], 10, 2 );
	132	+
	133	+ /**
	134	+ * Hook into redirect_guess_404_permalink to prevent WordPress from guessing a redirect
	135	+ * when an invalid KB/category slug results in a 404.
	136	+ */
	137	+ add_filter( 'redirect_guess_404_permalink', [ $this, 'prevent_guess_404_redirect_for_invalid_docs' ], 10 );
	138	+
	139	+ /**
	140	+ * Hook into WPML's redirect filter to prevent WPML from redirecting invalid docs URLs
	141	+ * to the canonical URL. This is the actual source of the redirect when WPML is active.
	142	+ */
	143	+ add_filter( 'wpml_is_redirected', [ $this, 'prevent_wpml_redirect_for_invalid_docs' ], 10, 3 );
	144	+
	145	+ /**
	146	+ * Final catch-all: hook into wp_redirect to block any redirect for invalid docs URLs.
	147	+ * This fires for ALL WordPress redirects regardless of source.
	148	+ */
	149	+ add_filter( 'wp_redirect', [ $this, 'prevent_any_redirect_for_invalid_docs' ], 10, 2 );
	150	+
	151	+ /**
	152	+ * Hook into template_redirect to validate category-post relationships
	153	+ * Priority 0 to run before WordPress canonical redirect (priority 10)
	154	+ */
	155	+ add_action( 'template_redirect', [ $this, 'validate_single_docs_category_redirect' ], 0 );
	156	+
	157	+ /**
	158	+ * Hook into template_redirect to 301 non-canonical single doc URLs.
	159	+ * Priority 5: after the validation above (0) so requests already headed for
	160	+ * a 404 are left alone, and before WordPress canonical redirect (10).
	161	+ */
	162	+ add_action( 'template_redirect', [ $this, 'redirect_to_canonical_docs_url' ], 5 );
	163	+ }
	164	+
	165	+ public function provide_compatibility( $element_id, $uri_parts, $request_url ) {
	166	+ if ( $request_url == $this->settings->get( 'docs_slug' ) ) {
	167	+ $element_id = '';
	168	+ }
	169	+ return $element_id;
	170	+ }
	171	+
	172	+ /**
	173	+ * Enforce 404 for invalid docs KB/category URLs via pre_get_posts.
	174	+ *
	175	+ * This fires before WordPress determines the template, allowing us to mark
	176	+ * the main query as a 404 when an invalid KB or category slug was detected
	177	+ * during parse_request.
	178	+ *
	179	+ * @param WP_Query $query
	180	+ */
	181	+ public function enforce_404_for_invalid_docs( $query ) {
	182	+ if ( ! $query->is_main_query() || is_admin() ) {
	183	+ return;
	184	+ }
	185	+ if ( $this->invalid_request_query_vars !== null ) {
	186	+ $query->set_404();
	187	+ status_header( 404 );
	188	+ nocache_headers();
	189	+
	190	+ // Kill ALL query vars that could cause WordPress to route to a doc/taxonomy template.
	191	+ // Without clearing these, WordPress still tries to build a tax_query from
	192	+ // doc_category/knowledge_base, selects the wrong template, and loads it
	193	+ // with a null post — causing PHP warnings in post-template functions.
	194	+ $query->set( 'name', '' );
	195	+ $query->set( 'pagename', '' );
	196	+ $query->set( 'p', -1 );
	197	+ $query->set( 'docs', '' );
	198	+ $query->set( 'doc_category', '' );
	199	+ $query->set( 'doc_tag', '' );
	200	+ $query->set( 'knowledge_base', '' );
	201	+ $query->set( 'post_type', '' );
	202	+
	203	+ // Reset all routing flags — only is_404 should remain true.
	204	+ $query->is_single = false;
	205	+ $query->is_singular = false;
	206	+ $query->is_archive = false;
	207	+ $query->is_tax = false;
	208	+ $query->is_home = false;
	209	+ $query->is_404 = true;
	210	+ }
	211	+ }
	212	+
	213	+ /**
	214	+ * Prevent canonical redirect for invalid docs category-post combinations
	215	+ *
	216	+ * @param string $redirect_url The redirect URL.
	217	+ * @param string $requested_url The requested URL.
	218	+ * @return string|false The redirect URL or false to prevent redirect.
	219	+ */
	220	+ public function prevent_canonical_redirect_for_invalid_docs( $redirect_url, $requested_url ) {
	221	+ global $wp_query;
	222	+
	223	+ // IMPORTANT: By the time redirect_canonical fires, both $requested_url and $_SERVER['REQUEST_URI']
	224	+ // have already had the invalid KB slug stripped (resulting in double slashes like /docs//base/post/).
	225	+ // The only place we captured the original invalid slugs was during is_single_docs() at parse_request time.
	226	+ // So we use the stored invalid_request_query_vars to detect and block invalid redirects.
	227	+ if ( $this->invalid_request_query_vars !== null ) {
	228	+ return false; // Block the redirect, show 404 instead
	229	+ }
	230	+
	231	+ $actual_url = home_url( isset( $_SERVER['REQUEST_URI'] ) ? esc_url_raw( wp_unslash( $_SERVER['REQUEST_URI'] ) ) : '' );
	232	+
	233	+ // Legacy check: if post_type=docs is already set in query vars, validate category
	234	+ if ( isset( $wp_query->query_vars['post_type'] ) && $wp_query->query_vars['post_type'] === 'docs' &&
	235	+ isset( $wp_query->query_vars['doc_category'] ) && isset( $wp_query->query_vars['name'] ) ) {
	236	+
	237	+ $doc_category = $wp_query->query_vars['doc_category'];
	238	+ $post_name = $wp_query->query_vars['name'];
	239	+
	240	+ // Get the post
	241	+ $post = get_page_by_path( $post_name, OBJECT, 'docs' );
	242	+
	243	+ if ( ! $post ) {
	244	+ return false; // Post doesn't exist, show 404
	245	+ }
	246	+
	247	+ // Get post's categories
	248	+ $post_categories = wp_get_post_terms( $post->ID, 'doc_category' );
	249	+
	250	+ if ( empty( $post_categories ) || is_wp_error( $post_categories ) ) {
	251	+ // Post has no categories - only allow if URL is 'uncategorized'
	252	+ if ( $doc_category !== 'uncategorized' ) {
	253	+ return false;
	254	+ }
	255	+ } else {
	256	+ // Post has categories - check if it belongs to the category in URL
	257	+ $category_slugs = wp_list_pluck( $post_categories, 'slug' );
	258	+
	259	+ // Handle hierarchical categories: check if any part of the path matches
	260	+ $category_parts = explode('/', trim($doc_category, '/'));
	261	+ $found_match = false;
	262	+
	263	+ foreach ( $category_parts as $cat_slug ) {
	264	+ if ( in_array( $cat_slug, $category_slugs ) ) {
	265	+ $found_match = true;
	266	+ break;
	267	+ }
	268	+ }
	269	+
	270	+ if ( ! $found_match ) {
	271	+ return false; // Post doesn't belong to this category, show 404
	272	+ }
	273	+ }
	274	+ }
	275	+
	276	+ return $redirect_url;
	277	+ }
	278	+
	279	+ /**
	280	+ * Prevent redirect_guess_404_permalink for invalid docs KB/category URLs
	281	+ *
	282	+ * @param string|false $redirect_url The guessed redirect URL, or false.
	283	+ * @return string|false
	284	+ */
	285	+ public function prevent_guess_404_redirect_for_invalid_docs( $redirect_url ) {
	286	+ if ( $this->invalid_request_query_vars !== null ) {
	287	+ return false; // Don't guess a redirect for invalid docs URLs
	288	+ }
	289	+ return $redirect_url;
	290	+ }
	291	+
	292	+ /**
	293	+ * Prevent WPML from redirecting invalid docs KB/category URLs to canonical URLs.
	294	+ *
	295	+ * WPML detects that the request URL doesn't match the post's canonical permalink
	296	+ * and issues a 301 redirect. We must block this when the URL has an invalid KB slug.
	297	+ *
	298	+ * @param string|false $redirect The redirect URL or false.
	299	+ * @param int $post_id The post ID.
	300	+ * @param WP_Query $q The query object.
	301	+ * @return string|false
	302	+ */
	303	+ public function prevent_wpml_redirect_for_invalid_docs( $redirect, $post_id, $q ) {
	304	+ // If we already detected an invalid KB/category slug during parse_request, block the redirect
	305	+ if ( $this->invalid_request_query_vars !== null ) {
	306	+ return false;
	307	+ }
	308	+ return $redirect;
	309	+ }
	310	+
	311	+ /**
	312	+ * Catch-all to prevent ANY WordPress wp_redirect() call for invalid docs URLs.
	313	+ *
	314	+ * This fires for all wp_redirect() calls regardless of source (canonical, WPML,
	315	+ * redirect_guess_404_permalink, etc.). Returning empty string cancels the redirect.
	316	+ *
	317	+ * @param string $location The redirect URL.
	318	+ * @param int $status The HTTP status code.
	319	+ * @return string The redirect URL or empty string to cancel.
	320	+ */
	321	+ public function prevent_any_redirect_for_invalid_docs( $location, $status ) {
	322	+ if ( $this->invalid_request_query_vars !== null ) {
	323	+ return ''; // Returning empty string cancels the redirect in wp_redirect()
	324	+ }
	325	+ return $location;
	326	+ }
	327	+
	328	+ /**
	329	+ * Validate single docs category relationship on template_redirect and force 404 if invalid
	330	+ */
	331	+ public function validate_single_docs_category_redirect() {
	332	+ global $wp_query, $wp;
	333	+
	334	+ // Use stored invalid query vars from parse time (most reliable approach)
	335	+ if ( $this->invalid_request_query_vars !== null ) {
	336	+ $wp_query->set_404();
	337	+ status_header( 404 );
	338	+ nocache_headers();
	339	+
	340	+ // We must actually serve the 404 template — set_404() alone doesn't stop the current template.
	341	+ // Hook into template_include to return the 404 template instead.
	342	+ add_filter( 'template_include', function( $template ) {
	343	+ $not_found = get_404_template();
	344	+ return $not_found ? $not_found : $template;
	345	+ }, 999 );
	346	+ return;
	347	+ }
	348	+
	349	+ // Legacy check: if post_type=docs is already set in query vars, validate category.
	350	+ // `name` must be a non-empty string — WP populates it with '' for taxonomy archive
	351	+ // requests (e.g. comma-separated multi-category URLs like /docs-category/a,b/),
	352	+ // which `isset()` would treat as present and incorrectly trigger this single-doc branch.
	353	+ if ( isset( $wp_query->query_vars['post_type'] ) && $wp_query->query_vars['post_type'] === 'docs' &&
	354	+ isset( $wp_query->query_vars['doc_category'] ) && ! empty( $wp_query->query_vars['name'] ) ) {
	355	+
	356	+ $doc_category = $wp_query->query_vars['doc_category'];
	357	+ $post_name = $wp_query->query_vars['name'];
	358	+
	359	+ // Get the post
	360	+ $post = get_page_by_path( $post_name, OBJECT, 'docs' );
	361	+
	362	+ if ( ! $post ) {
	363	+ $wp_query->set_404();
	364	+ status_header( 404 );
	365	+ nocache_headers();
	366	+ return;
	367	+ }
	368	+
	369	+ // Get post's categories
	370	+ $post_categories = wp_get_post_terms( $post->ID, 'doc_category' );
	371	+
	372	+ if ( empty( $post_categories ) || is_wp_error( $post_categories ) ) {
	373	+ // Post has no categories - only allow if URL is 'uncategorized'
	374	+ if ( $doc_category !== 'uncategorized' ) {
	375	+ $wp_query->set_404();
	376	+ status_header( 404 );
	377	+ nocache_headers();
	378	+ return;
	379	+ }
	380	+ } else {
	381	+ // Post has categories - check if it belongs to the category in URL
	382	+ $category_slugs = wp_list_pluck( $post_categories, 'slug' );
	383	+
	384	+ // Handle hierarchical categories: check if any part of the path matches
	385	+ $category_parts = explode('/', trim($doc_category, '/'));
	386	+ $found_match = false;
	387	+
	388	+ foreach ( $category_parts as $cat_slug ) {
	389	+ if ( in_array( $cat_slug, $category_slugs ) ) {
	390	+ $found_match = true;
	391	+ break;
	392	+ }
	393	+ }
	394	+
	395	+ if ( ! $found_match ) {
	396	+ $wp_query->set_404();
	397	+ status_header( 404 );
	398	+ nocache_headers();
	399	+ return;
	400	+ }
	401	+ }
	402	+ }
	403	+ }
	404	+
	405	+ /**
	406	+ * 301 redirect a single doc to its canonical permalink.
	407	+ *
	408	+ * With `enable_category_hierarchy_slugs` enabled the single doc rewrite rule
	409	+ * captures every segment between the base and the doc slug into `doc_category`
	410	+ * (see Rewrite::rules), and the category validation above only requires ONE of
	411	+ * those segments to match. That looseness is deliberate — a strict match would
	412	+ * 404 legitimate Multiple KB and WPML URLs, where the KB slug and translated
	413	+ * segments share the same capture group — but it also means a doc resolves on an
	414	+ * unlimited number of URLs, e.g. /docs/anything/real-category/doc-slug/.
	415	+ *
	416	+ * Rather than tightening the match, this compares the requested category path
	417	+ * against every path the doc legitimately has and redirects the rest. Every URL
	418	+ * that resolves today keeps resolving; only the extra ones collapse.
	419	+ */
	420	+ public function redirect_to_canonical_docs_url() {
	421	+ global $wp_query;
	422	+
	423	+ /**
	424	+ * Allow the canonical redirect to be disabled.
	425	+ *
	426	+ * @param bool $enabled Whether non-canonical single doc URLs should 301.
	427	+ */
	428	+ if ( ! apply_filters( 'betterdocs_enable_canonical_redirect', true ) ) {
	429	+ return;
	430	+ }
	431	+
	432	+ if ( is_admin() || wp_doing_ajax() || is_feed() || is_embed() || is_preview() || is_customize_preview() ) {
	433	+ return;
	434	+ }
	435	+
	436	+ $request_method = isset( $_SERVER['REQUEST_METHOD'] ) ? strtoupper( sanitize_text_field( wp_unslash( $_SERVER['REQUEST_METHOD'] ) ) ) : 'GET';
	437	+ if ( $request_method !== 'GET' ) {
	438	+ return;
	439	+ }
	440	+
	441	+ if ( ! is_singular( 'docs' ) || is_404() ) {
	442	+ return;
	443	+ }
	444	+
	445	+ /**
	446	+ * The request is already headed for a 404 — leave it alone. Note that
	447	+ * prevent_any_redirect_for_invalid_docs() cancels every wp_redirect() while
	448	+ * this flag is set, so the redirect below would be swallowed anyway.
	449	+ */
	450	+ if ( $this->invalid_request_query_vars !== null ) {
	451	+ return;
	452	+ }
	453	+
	454	+ $requested_category = isset( $wp_query->query_vars['doc_category'] ) ? $wp_query->query_vars['doc_category'] : '';
	455	+ if ( ! is_string( $requested_category ) || $requested_category === '' ) {
	456	+ return;
	457	+ }
	458	+
	459	+ $post_id = get_queried_object_id();
	460	+ if ( ! $post_id ) {
	461	+ return;
	462	+ }
	463	+
	464	+ $valid_paths = $this->get_valid_category_paths( $post_id );
	465	+ if ( empty( $valid_paths ) ) {
	466	+ return;
	467	+ }
	468	+
	469	+ $requested_category = urldecode( trim( $requested_category, '/' ) );
	470	+
	471	+ /**
	472	+ * Under Multiple KB the knowledge base segment is parsed into its own query
	473	+ * var, so put it back in front of the category chain before comparing —
	474	+ * otherwise a crossed `/kb-a/category-of-kb-b/doc/` would look canonical.
	475	+ */
	476	+ $requested_kb = isset( $wp_query->query_vars['knowledge_base'] ) ? $wp_query->query_vars['knowledge_base'] : '';
	477	+ if ( is_string( $requested_kb ) && $requested_kb !== '' ) {
	478	+ $requested_category = urldecode( trim( $requested_kb, '/' ) ) . '/' . $requested_category;
	479	+ }
	480	+
	481	+ if ( in_array( $requested_category, $valid_paths, true ) ) {
	482	+ return; // Already canonical (or another legitimate category of this doc).
	483	+ }
	484	+
	485	+ $canonical = get_permalink( $post_id );
	486	+ if ( ! $canonical ) {
	487	+ return;
	488	+ }
	489	+
	490	+ // Keep the multipage segment the rewrite rule captured.
	491	+ $page = isset( $wp_query->query_vars['page'] ) ? absint( $wp_query->query_vars['page'] ) : 0;
	492	+ if ( $page > 1 ) {
	493	+ $canonical = trailingslashit( $canonical ) . user_trailingslashit( $page, 'single_paged' );
	494	+ }
	495	+
	496	+ /**
	497	+ * Belt and braces: never redirect a URL onto itself. The allowed set is built
	498	+ * from the same term chains get_permalink() uses, so this should be
	499	+ * unreachable, but a third party filtering the permalink could otherwise turn
	500	+ * a redirect into a loop.
	501	+ */
	502	+ $requested_path = isset( $_SERVER['REQUEST_URI'] ) ? wp_parse_url( wp_unslash( $_SERVER['REQUEST_URI'] ), PHP_URL_PATH ) : '';
	503	+ $canonical_path = wp_parse_url( $canonical, PHP_URL_PATH );
	504	+ if ( untrailingslashit( urldecode( (string) $requested_path ) ) === untrailingslashit( urldecode( (string) $canonical_path ) ) ) {
	505	+ return;
	506	+ }
	507	+
	508	+ $query_string = isset( $_SERVER['QUERY_STRING'] ) ? sanitize_text_field( wp_unslash( $_SERVER['QUERY_STRING'] ) ) : '';
	509	+ if ( $query_string !== '' ) {
	510	+ $canonical .= ( strpos( $canonical, '?' ) === false ? '?' : '&' ) . $query_string;
	511	+ }
	512	+
	513	+ if ( wp_safe_redirect( $canonical, 301 ) ) {
	514	+ exit;
	515	+ }
	516	+ }
	517	+
	518	+ /**
	519	+ * Every category path a doc can legitimately be reached at.
	520	+ *
	521	+ * Includes the full parent/child chain of each assigned category, and — because
	522	+ * the hierarchy rewrite rule folds the knowledge base slug into `doc_category`
	523	+ * for the `docs/%knowledge_base%/%doc_category%` structure — the KB-prefixed
	524	+ * variants too.
	525	+ *
	526	+ * @param int $post_id The doc id.
	527	+ * @return string[] Normalised (urldecoded, unslashed) category paths.
	528	+ */
	529	+ protected function get_valid_category_paths( $post_id ) {
	530	+ $cat_terms = wp_get_object_terms( $post_id, 'doc_category' );
	531	+
	532	+ if ( is_wp_error( $cat_terms ) ) {
	533	+ return [];
	534	+ }
	535	+
	536	+ $paths = [];
	537	+ $cat_paths = [];
	538	+
	539	+ if ( empty( $cat_terms ) ) {
	540	+ $paths[] = 'uncategorized';
	541	+ } else {
	542	+ foreach ( $cat_terms as $cat_term ) {
	543	+ $path = PostType::build_category_path( $cat_term );
	544	+
	545	+ if ( $path !== '' ) {
	546	+ $paths[] = $path;
	547	+ $cat_paths[ $cat_term->term_id ] = $path;
	548	+ }
	549	+ }
	550	+ }
	551	+
	552	+ if ( taxonomy_exists( 'knowledge_base' ) ) {
	553	+ $kb_terms = wp_get_object_terms( $post_id, 'knowledge_base', [ 'fields' => 'slugs' ] );
	554	+
	555	+ if ( ! is_wp_error( $kb_terms ) && ! empty( $kb_terms ) ) {
	556	+ $kb_paths = [];
	557	+
	558	+ /**
	559	+ * Read the KB association once per category rather than once per
	560	+ * KB/category pair. The wp_get_object_terms() call above primes the
	561	+ * term meta cache for these terms (`update_term_meta_cache` defaults
	562	+ * to true), so these reads are cache hits and add no queries.
	563	+ *
	564	+ * The association mirrors how PostType::post_link() picks the
	565	+ * category via `doc_category_knowledge_base`. Without it a doc in
	566	+ * KB A / category A and KB B / category B would treat the crossed
	567	+ * `/kb-a/category-b/doc/` as canonical. A term with no association
	568	+ * meta is unassigned rather than KB specific, so it stays valid
	569	+ * under every KB — post_link() falls back the same way.
	570	+ */
	571	+ $term_kbs = [];
	572	+
	573	+ if ( ! empty( $cat_paths ) ) {
	574	+ foreach ( array_keys( $cat_paths ) as $term_id ) {
	575	+ $meta = get_term_meta( $term_id, 'doc_category_knowledge_base', true );
	576	+ $term_kbs[ $term_id ] = ( ! empty( $meta ) && is_array( $meta ) ) ? $meta : null;
	577	+ }
	578	+ }
	579	+
	580	+ foreach ( $kb_terms as $kb_slug ) {
	581	+ if ( empty( $cat_paths ) ) {
	582	+ // Uncategorised doc: the KB slug is the only prefix there is.
	583	+ foreach ( $paths as $path ) {
	584	+ $kb_paths[] = $kb_slug . '/' . $path;
	585	+ }
	586	+ continue;
	587	+ }
	588	+
	589	+ foreach ( $cat_paths as $term_id => $path ) {
	590	+ if ( $term_kbs[ $term_id ] !== null && ! in_array( $kb_slug, $term_kbs[ $term_id ], true ) ) {
	591	+ continue;
	592	+ }
	593	+
	594	+ $kb_paths[] = $kb_slug . '/' . $path;
	595	+ }
	596	+ }
	597	+
	598	+ $paths = array_merge( $paths, $kb_paths );
	599	+ }
	600	+ }
	601	+
	602	+ /**
	603	+ * Non-Latin slugs are stored URL encoded while the requested path arrives
	604	+ * decoded, so normalise both sides before comparing.
	605	+ */
	606	+ $paths = array_map(
	607	+ function ( $path ) {
	608	+ return urldecode( trim( $path, '/' ) );
	609	+ },
	610	+ $paths
	611	+ );
	612	+
	613	+ /**
	614	+ * Filter the category paths a doc is allowed to be reached at.
	615	+ *
	616	+ * @param string[] $paths Valid category paths.
	617	+ * @param int $post_id The doc id.
	618	+ */
	619	+ return array_values( array_unique( apply_filters( 'betterdocs_valid_docs_category_paths', $paths, $post_id ) ) );
	620	+ }
	621	+
	622	+ /**
	623	+ * Check if a URL matches a BetterDocs single docs permalink structure
	624	+ * but has invalid KB/category slugs that don't match the post.
	625	+ *
	626	+ * @param string $url The URL to check.
	627	+ * @return bool True if the URL is a BetterDocs docs URL with invalid slugs.
	628	+ */
	629	+ protected function is_invalid_docs_url( $url ) {
	630	+ // Get the path from the URL
	631	+ $path = trim( (string) wp_parse_url( $url, PHP_URL_PATH ), '/' );
	632	+
	633	+ // Check each permalink structure
	634	+ foreach ( $this->perma_structure as $_type => $structure ) {
	635	+ if ( $_type !== 'is_single_docs' ) {
	636	+ continue;
	637	+ }
	638	+
	639	+ $_perma_vars = $this->is_perma_valid_for( $structure, $path );
	640	+ if ( ! $_perma_vars ) {
	641	+ continue;
	642	+ }
	643	+
	644	+ // URL matches the single docs structure - now validate the slugs
	645	+ $name = isset( $_perma_vars['docs'] ) ? $_perma_vars['docs'] : ( isset( $_perma_vars['name'] ) ? $_perma_vars['name'] : '' );
	646	+ if ( empty( $name ) ) {
	647	+ continue;
	648	+ }
	649	+
	650	+ // Check if the post exists
	651	+ $post = get_page_by_path( $name, OBJECT, 'docs' );
	652	+ if ( ! $post ) {
	653	+ return false; // Post doesn't exist at all - not our concern
	654	+ }
	655	+
	656	+ // Validate knowledge_base slug if present
	657	+ if ( isset( $_perma_vars['knowledge_base'] ) && ! empty( $_perma_vars['knowledge_base'] ) ) {
	658	+ $post_kbs = wp_get_post_terms( $post->ID, 'knowledge_base', [ 'fields' => 'slugs' ] );
	659	+ if ( ! is_wp_error( $post_kbs ) && ! in_array( $_perma_vars['knowledge_base'], $post_kbs ) ) {
	660	+ return true; // Invalid KB slug
	661	+ }
	662	+ }
	663	+
	664	+ // Validate doc_category slug if present
	665	+ if ( isset( $_perma_vars['doc_category'] ) && ! empty( $_perma_vars['doc_category'] ) ) {
	666	+ $category_parts = explode( '/', trim( $_perma_vars['doc_category'], '/' ) );
	667	+ $post_categories = wp_get_post_terms( $post->ID, 'doc_category', [ 'fields' => 'slugs' ] );
	668	+
	669	+ if ( ! is_wp_error( $post_categories ) ) {
	670	+ $found = false;
	671	+ foreach ( $category_parts as $cat_slug ) {
	672	+ if ( in_array( $cat_slug, $post_categories ) ) {
	673	+ $found = true;
	674	+ break;
	675	+ }
	676	+ }
	677	+ if ( ! $found ) {
	678	+ return true; // Invalid category slug
	679	+ }
	680	+ }
	681	+ }
	682	+ }
	683	+
	684	+ return false;
	685	+ }
	686	+
	687	+ /**
	688	+ * Set up taxonomy query for category archives
	689	+ * This ensures WordPress recognizes requests with doc_category or knowledge_base as taxonomy archives
	690	+ *
	691	+ * @param \WP_Query $query The WordPress query object
	692	+ */
	693	+ public function setup_taxonomy_query( $query ) {
	694	+ if ( is_admin() || ! $query->is_main_query() ) {
	695	+ return;
	696	+ }
	697	+ if ( $this->invalid_request_query_vars !== null ) {
	698	+ return;
	699	+ }
	700	+
	701	+ // Check if this is a doc_category request
	702	+ if ( isset( $query->query_vars['doc_category'] ) && ! empty( $query->query_vars['doc_category'] ) ) {
	703	+ // If this is already identified as singular, don't override it
	704	+ if ( $query->is_singular() || $query->is_singular ) {
	705	+
	706	+ // Ensure it's not marked as 404
	707	+ $query->is_404 = false;
	708	+ return;
	709	+ }
	710	+
	711	+ // Check if we have a post ID set (p query var)
	712	+ if ( isset( $query->query_vars['p'] ) && $query->query_vars['p'] > 0 ) {
	713	+ // Security check: if this is a private post and user can't read private docs, show 404
	714	+ $post = get_post( $query->query_vars['p'] );
	715	+ if ( $post && $post->post_status === 'private' && ! current_user_can( 'read_private_docs' ) ) {
	716	+
	717	+ $query->is_404 = true;
	718	+ $query->is_single = false;
	719	+ $query->is_singular = false;
	720	+ return;
	721	+ }
	722	+
	723	+ // Explicitly set this as a single post, not an archive or 404
	724	+ $query->is_single = true;
	725	+ $query->is_singular = true;
	726	+ $query->is_404 = false;
	727	+ $query->is_archive = false;
	728	+ $query->is_tax = false;
	729	+ return;
	730	+ }
	731	+
	732	+ // Check if we have 'docs' query var (alternative to 'name')
	733	+ if ( isset( $query->query_vars['docs'] ) && ! empty( $query->query_vars['docs'] ) ) {
	734	+ // Explicitly set this as a single post
	735	+ $query->is_single = true;
	736	+ $query->is_singular = true;
	737	+ $query->is_404 = false;
	738	+ $query->is_archive = false;
	739	+ $query->is_tax = false;
	740	+ return;
	741	+ }
	742	+
	743	+ // If 'name' is set, check if a post with that name exists
	744	+ // This prevents private docs from being incorrectly treated as category archives
	745	+ if ( isset( $query->query_vars['name'] ) && ! empty( $query->query_vars['name'] ) ) {
	746	+ $post_exists = get_page_by_path( $query->query_vars['name'], OBJECT, 'docs' );
	747	+
	748	+ if ( $post_exists ) {
	749	+ // A post exists - this is a single doc request, not a category archive
	750	+ // Don't set taxonomy flags
	751	+ return;
	752	+ }
	753	+ }
	754	+
	755	+ // Only set taxonomy flags if none of the above conditions are met (pure category archive)
	756	+ if ( ( ! isset( $query->query_vars['name'] ) || empty( $query->query_vars['name'] ) ) &&
	757	+ ( ! isset( $query->query_vars['p'] ) || $query->query_vars['p'] <= 0 ) &&
	758	+ ( ! isset( $query->query_vars['docs'] ) || empty( $query->query_vars['docs'] ) ) ) {
	759	+
	760	+ // Set this as a taxonomy query
	761	+ $query->is_tax = true;
	762	+ $query->is_archive = true;
	763	+ $query->is_home = false;
	764	+ $query->is_404 = false; // Important: reset 404 flag
	765	+
	766	+ // WordPress/Polylang may store non-Latin slugs URL-encoded (%e0%a6...) while the
	767	+ // query var arrives decoded (বেটারডক্স). Try both forms so the term lookup succeeds.
	768	+ $term = $this->get_term_by_slug_or_encoded( $query->query_vars['doc_category'], 'doc_category' );
	769	+ if ( $term ) {
	770	+ $query->queried_object = $term;
	771	+ $query->queried_object_id = $term->term_id;
	772	+
	773	+ // Set up tax_query using proper WP_Tax_Query class
	774	+ if ( ! isset( $query->tax_query ) || ! is_a( $query->tax_query, 'WP_Tax_Query' ) ) {
	775	+ $tax_query_args = [
	776	+ [
	777	+ 'taxonomy' => 'doc_category',
	778	+ 'field' => 'slug',
	779	+ 'terms' => [ $term->slug ]
	780	+ ]
	781	+ ];
	782	+ $query->tax_query = new \WP_Tax_Query( $tax_query_args );
	783	+ $query->tax_query->queried_terms = [
	784	+ 'doc_category' => [
	785	+ 'terms' => [ $term->slug ],
	786	+ 'field' => 'slug'
	787	+ ]
	788	+ ];
	789	+ }
	790	+ }
	791	+ }
	792	+ }
	793	+
	794	+ }
	795	+
	796	+ /**
	797	+ * Validate that the requested path matches the expected documentation root.
	798	+ * This prevents URLs with invalid prefixes (e.g., /invalid/docs/...) from showing archive templates.
	799	+ */
	800	+ public function validate_request_path() {
	801	+ if ( is_admin() || ! is_main_query() ) {
	802	+ return;
	803	+ }
	804	+
	805	+ global $wp;
	806	+ // $wp->request contains the path relative to site root, without query string
	807	+ $request_path = isset( $wp->request ) ? urldecode( $wp->request ) : '';
	808	+
	809	+ // Normalize request path: remove index.php/ and leading/trailing slashes
	810	+ $request_path = trim( preg_replace( '#^index\.php(/|$)#', '', $request_path ), '/' );
	811	+
	812	+ // If the request path is empty, this is a query-string-only request (e.g. /?post_type=docs).
	813	+ // There is no URL prefix to validate in that case, so bail early.
	814	+ if ( $request_path === '' ) {
	815	+ return;
	816	+ }
	817	+
	818	+ // Normalize base slug
	819	+ $docs_slug = $this->rewrite->get_base_slug();
	820	+
	821	+ // If user is using a custom page as root, use that page's path
	822	+ if ( ! $this->settings->get( 'builtin_doc_page', true ) ) {
	823	+ $docs_page_id = $this->settings->get( 'docs_page', 0 );
	824	+ if ( $docs_page_id ) {
	825	+ $page_path = get_page_uri( $docs_page_id );
	826	+ if ( $page_path ) {
	827	+ $docs_slug = $page_path;
	828	+ }
	829	+ }
	830	+ }
	831	+
	832	+ $docs_slug = trim( $docs_slug, '/' );
	833	+
	834	+ if ( empty( $docs_slug ) ) {
	835	+ return;
	836	+ }
	837	+
	838	+ // Check if this is a query we should validate
	839	+ $is_docs_query = is_singular( 'docs' ) || is_post_type_archive( 'docs' ) || is_tax( [ 'doc_category', 'knowledge_base', 'doc_tag' ] );
	840	+ $looks_like_docs_url = strpos( $request_path, $docs_slug ) !== false;
	841	+
	842	+ // We validate if it's explicitly a docs query, OR if it looks like a docs URL but fell back to home/archive
	843	+ if ( ! $is_docs_query && ! ( $looks_like_docs_url && is_home() ) ) {
	844	+ return;
	845	+ }
	846	+
	847	+ // If WordPress already correctly resolved this as a single docs post, trust that resolution.
	848	+ // The post was found and is valid — no need to validate the URL prefix at all.
	849	+ // Path validation is only meaningful for archive/tax pages whose URL leaked past the docs slug.
	850	+ if ( is_singular( 'docs' ) ) {
	851	+ return;
	852	+ }
	853	+
	854	+ // Check if request path strictly starts with docs slug, category slug, or tag slug
	855	+ // Using # as delimiter, need to preg_quote
	856	+ $valid_slugs = [
	857	+ $docs_slug,
	858	+ trim( $this->settings->get( 'category_slug', 'docs-category' ), '/' ),
	859	+ trim( $this->settings->get( 'tag_slug', 'docs-tag' ), '/' )
	860	+ ];
	861	+
	862	+ // WPML/Polylang translate the registered rewrite slug per active language,
	863	+ // while $docs_slug from settings is always the default-language slug. Include
	864	+ // the post type's / taxonomies' currently-registered rewrite slugs so that
	865	+ // translated archive URLs (e.g. /en/support/ when settings.docs_slug is
	866	+ // "soporte") are accepted instead of being 404'd.
	867	+ $docs_pt = get_post_type_object( 'docs' );
	868	+ if ( $docs_pt && ! empty( $docs_pt->rewrite['slug'] ) ) {
	869	+ $valid_slugs[] = trim( $docs_pt->rewrite['slug'], '/' );
	870	+ }
	871	+ foreach ( [ 'doc_category', 'doc_tag', 'knowledge_base' ] as $tax ) {
	872	+ $tax_obj = get_taxonomy( $tax );
	873	+ if ( $tax_obj && ! empty( $tax_obj->rewrite['slug'] ) ) {
	874	+ $valid_slugs[] = trim( $tax_obj->rewrite['slug'], '/' );
	875	+ }
	876	+ }
	877	+
	878	+ // Belt-and-suspenders for WPML's slug-translation feature, which may store
	879	+ // the translated slug separately from the post type's rewrite['slug'].
	880	+ if ( has_filter( 'wpml_get_translated_slug' ) ) {
	881	+ // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedHooknameFound -- WPML-owned filter; name must be used verbatim.
	882	+ $wpml_slug = apply_filters( 'wpml_get_translated_slug', $docs_slug, 'docs' );
	883	+ if ( is_string( $wpml_slug ) && $wpml_slug !== '' ) {
	884	+ $valid_slugs[] = trim( $wpml_slug, '/' );
	885	+ }
	886	+ }
	887	+
	888	+ $valid_prefixes = array_unique( array_filter( $valid_slugs ) );
	889	+ $valid_prefixes = array_map( function ( $slug ) { return preg_quote( $slug, '#' ); }, $valid_prefixes );
	890	+
	891	+ // Allow optional language prefixes (e.g. /en/, /pt-br/) for WPML/Polylang/TranslatePress compatibility
	892	+ $lang_pattern = '(?:[a-zA-Z]{2,3}(?:-[a-zA-Z0-9]{2,4})?/)?';
	893	+
	894	+ $prefix_pattern = '#^' . $lang_pattern . '(' . implode( '|', $valid_prefixes ) . ')(/|$)#';
	895	+
	896	+ if ( ! preg_match( $prefix_pattern, $request_path ) ) {
	897	+ global $wp_query;
	898	+ $wp_query->set_404();
	899	+ status_header( 404 );
	900	+ nocache_headers();
	901	+ }
	902	+ }
	903	+
	904	+ /**
	905	+ * Re-apply taxonomy flags on template_redirect
	906	+ * This ensures the flags stick even if WordPress or other plugins reset them
	907	+ */
	908	+ public function reapply_taxonomy_flags() {
	909	+ global $wp_query;
	910	+
	911	+ // If we found invalid query vars, do not mess with the query flags.
	912	+ if ( $this->invalid_request_query_vars !== null ) {
	913	+ return;
	914	+ }
	915	+
	916	+ // Check if we have doc_category or knowledge_base in query vars
	917	+ if ( isset( $wp_query->query_vars['doc_category'] ) && ! empty( $wp_query->query_vars['doc_category'] ) ) {
	918	+ // If this is already identified as singular, don't override it
	919	+ if ( $wp_query->is_singular() || $wp_query->is_singular ) {
	920	+
	921	+ // Ensure it's not marked as 404
	922	+ $wp_query->is_404 = false;
	923	+ return;
	924	+ }
	925	+
	926	+ // Check if we have a post ID set (p query var)
	927	+ if ( isset( $wp_query->query_vars['p'] ) && $wp_query->query_vars['p'] > 0 ) {
	928	+
	929	+
	930	+ // Security check: if this is a private post and user can't read private docs, show 404
	931	+ $post = get_post( $wp_query->query_vars['p'] );
	932	+ if ( $post && $post->post_status === 'private' && ! current_user_can( 'read_private_docs' ) ) {
	933	+
	934	+ $wp_query->is_404 = true;
	935	+ $wp_query->is_single = false;
	936	+ $wp_query->is_singular = false;
	937	+ return;
	938	+ }
	939	+
	940	+ // Explicitly set this as a single post, not an archive or 404
	941	+ $wp_query->is_single = true;
	942	+ $wp_query->is_singular = true;
	943	+ $wp_query->is_404 = false;
	944	+ $wp_query->is_archive = false;
	945	+ $wp_query->is_tax = false;
	946	+ return;
	947	+ }
	948	+
	949	+ // Check if we have 'docs' query var (alternative to 'name')
	950	+ if ( isset( $wp_query->query_vars['docs'] ) && ! empty( $wp_query->query_vars['docs'] ) ) {
	951	+
	952	+ // Explicitly set this as a single post
	953	+ $wp_query->is_single = true;
	954	+ $wp_query->is_singular = true;
	955	+ $wp_query->is_404 = false;
	956	+ $wp_query->is_archive = false;
	957	+ $wp_query->is_tax = false;
	958	+ return;
	959	+ }
	960	+
	961	+ // If 'name' is set, check if a post with that name exists
	962	+ // This prevents posts from being incorrectly treated as category archives
	963	+ // (important when post slug == category slug, e.g. docs/old/new/new)
	964	+ if ( isset( $wp_query->query_vars['name'] ) && ! empty( $wp_query->query_vars['name'] ) ) {
	965	+ $post_exists = get_page_by_path( $wp_query->query_vars['name'], OBJECT, 'docs' );
	966	+
	967	+ if ( $post_exists ) {
	968	+ // A post exists - explicitly mark as single post and clear any taxonomy flags.
	969	+ // Without this, WP may leave is_tax=true (set during parse_request because
	970	+ // doc_category is also present), causing redirect_canonical to redirect
	971	+ // the correct single-post URL to the category archive URL.
	972	+ $wp_query->is_single = true;
	973	+ $wp_query->is_singular = true;
	974	+ $wp_query->is_404 = false;
	975	+ $wp_query->is_archive = false;
	976	+ $wp_query->is_tax = false;
	977	+ $wp_query->queried_object = $post_exists;
	978	+ $wp_query->queried_object_id = $post_exists->ID;
	979	+ return;
	980	+ }
	981	+ }
	982	+
	983	+ // Only set taxonomy flags if none of the above conditions are met (pure category archive)
	984	+ if ( ( ! isset( $wp_query->query_vars['name'] ) || empty( $wp_query->query_vars['name'] ) ) &&
	985	+ ( ! isset( $wp_query->query_vars['p'] ) || $wp_query->query_vars['p'] <= 0 ) &&
	986	+ ( ! isset( $wp_query->query_vars['docs'] ) || empty( $wp_query->query_vars['docs'] ) ) ) {
	987	+
	988	+ // Ensure the queried object is set or fetch the term
	989	+ $term = null;
	990	+ if ( isset( $wp_query->queried_object ) && $wp_query->queried_object ) {
	991	+ $term = $wp_query->queried_object;
	992	+ } else {
	993	+ // WordPress/Polylang may store non-Latin slugs URL-encoded; try both forms.
	994	+ $term = $this->get_term_by_slug_or_encoded( $wp_query->query_vars['doc_category'], 'doc_category' );
	995	+ }
	996	+
	997	+ // Only if the term effectively exists, we set the flags
	998	+ if ( $term && ! is_wp_error( $term ) ) {
	999	+ // Also validate knowledge_base if present
	1000	+ if ( isset( $wp_query->query_vars['knowledge_base'] ) && ! empty( $wp_query->query_vars['knowledge_base'] ) ) {
	1001	+ if ( ! $this->get_term_by_slug_or_encoded( $wp_query->query_vars['knowledge_base'], 'knowledge_base' ) ) {
	1002	+ return;
	1003	+ }
	1004	+ }
	1005	+
	1006	+ // Re-apply the taxonomy flags
	1007	+ $wp_query->is_tax = true;
	1008	+ $wp_query->is_archive = true;
	1009	+ $wp_query->is_home = false;
	1010	+ $wp_query->is_404 = false;
	1011	+
	1012	+ if ( ! isset( $wp_query->queried_object ) || ! $wp_query->queried_object ) {
	1013	+ $wp_query->queried_object = $term;
	1014	+ $wp_query->queried_object_id = $term->term_id;
	1015	+
	1016	+ // Set up tax_query using proper WP_Tax_Query class
	1017	+ if ( ! isset( $wp_query->tax_query ) || ! is_a( $wp_query->tax_query, 'WP_Tax_Query' ) ) {
	1018	+ $tax_query_args = [
	1019	+ [
	1020	+ 'taxonomy' => 'doc_category',
	1021	+ 'field' => 'slug',
	1022	+ 'terms' => [ $term->slug ]
	1023	+ ]
	1024	+ ];
	1025	+ $wp_query->tax_query = new \WP_Tax_Query( $tax_query_args );
	1026	+ $wp_query->tax_query->queried_terms = [
	1027	+ 'doc_category' => [
	1028	+ 'terms' => [ $term->slug ],
	1029	+ 'field' => 'slug'
	1030	+ ]
	1031	+ ];
	1032	+ }
	1033	+ }
	1034	+ }
	1035	+ }
	1036	+ }
	1037	+
	1038	+ }
	1039	+
	1040	+ /**
	1041	+ * Debug template redirect to see the query state
	1042	+ */
	1043	+ /**
	1044	+ * Prevent 404 status for valid taxonomy archives
	1045	+ *
	1046	+ * @param string $status_header The HTTP status header
	1047	+ * @param int $code The HTTP status code
	1048	+ * @return string The modified status header
	1049	+ */
	1050	+ public function prevent_404_status( $status_header, $code ) {
	1051	+ global $wp_query;
	1052	+
	1053	+ // If we've explicitly marked this request as invalid (malformed KB/category slug), respect the 404!
	1054	+ if ( $this->invalid_request_query_vars !== null ) {
	1055	+ return $status_header;
	1056	+ }
	1057	+
	1058	+ // If a 404 is being sent but the queried object is a valid single docs post,
	1059	+ // override with 200. This guards against false 404s on single docs pages.
	1060	+ if ( $code == 404 &&
	1061	+ isset( $wp_query->queried_object ) &&
	1062	+ $wp_query->queried_object instanceof \WP_Post &&
	1063	+ $wp_query->queried_object->post_type === 'docs' &&
	1064	+ in_array( $wp_query->queried_object->post_status, [ 'publish', 'private' ], true )
	1065	+ ) {
	1066	+ // Only allow if the current user can actually read this post
	1067	+ if ( 'publish' === $wp_query->queried_object->post_status ||
	1068	+ current_user_can( 'read_private_posts', $wp_query->queried_object->ID ) ) {
	1069	+ return 'HTTP/1.1 200 OK';
	1070	+ }
	1071	+ }
	1072	+
	1073	+ // If this is a 404 but we have doc_category or doc_tag query vars, change it to 200
	1074	+ // We check the query vars instead of is_tax because the flags get reset by WordPress
	1075	+ if ( $code == 404 && (
	1076	+ (isset($wp_query->query_vars['doc_category']) && ! empty($wp_query->query_vars['doc_category'])) ||
	1077	+ (isset($wp_query->query_vars['doc_tag']) && ! empty($wp_query->query_vars['doc_tag']))
	1078	+ ) ) {
	1079	+ // Validate existence before forcing 200
	1080	+ // Use encoded fallback so Bengali/Arabic/CJK slugs are found correctly.
	1081	+ if ( isset($wp_query->query_vars['doc_category']) && ! empty($wp_query->query_vars['doc_category']) ) {
	1082	+ $term = $this->get_term_by_slug_or_encoded( $wp_query->query_vars['doc_category'], 'doc_category' );
	1083	+ if ( ! $term || is_wp_error( $term ) ) {
	1084	+ return $status_header;
	1085	+ }
	1086	+ }
	1087	+ if ( isset($wp_query->query_vars['doc_tag']) && ! empty($wp_query->query_vars['doc_tag']) ) {
	1088	+ $term = $this->get_term_by_slug_or_encoded( $wp_query->query_vars['doc_tag'], 'doc_tag' );
	1089	+ if ( ! $term || is_wp_error( $term ) ) {
	1090	+ return $status_header;
	1091	+ }
	1092	+ }
	1093	+ if ( isset($wp_query->query_vars['knowledge_base']) && ! empty($wp_query->query_vars['knowledge_base']) ) {
	1094	+ $term = $this->get_term_by_slug_or_encoded( $wp_query->query_vars['knowledge_base'], 'knowledge_base' );
	1095	+ if ( ! $term || is_wp_error( $term ) ) {
	1096	+ return $status_header;
	1097	+ }
	1098	+ }
	1099	+
	1100	+ return 'HTTP/1.1 200 OK';
	1101	+ }
	1102	+
	1103	+ return $status_header;
	1104	+ }
	1105	+
	1106	+ /**
	1107	+ * Ensure tax_query is always initialized as an object
	1108	+ * This prevents null reference errors from WPML and other plugins
	1109	+ * Only applies to BetterDocs post type and taxonomies
	1110	+ */
	1111	+ public function ensure_tax_query_initialized() {
	1112	+ global $wp_query;
	1113	+
	1114	+ // Only apply to BetterDocs-related queries
	1115	+ $is_betterdocs_query = false;
	1116	+
	1117	+ // Check if this is a docs post type query
	1118	+ if ( isset( $wp_query->query_vars['post_type'] ) && $wp_query->query_vars['post_type'] === 'docs' ) {
	1119	+ $is_betterdocs_query = true;
	1120	+ }
	1121	+
	1122	+ // Check if this is a BetterDocs taxonomy query
	1123	+ if ( isset( $wp_query->query_vars['doc_category'] ) && ! empty( $wp_query->query_vars['doc_category'] ) ) {
	1124	+ $is_betterdocs_query = true;
	1125	+ }
	1126	+
	1127	+ if ( isset( $wp_query->query_vars['doc_tag'] ) && ! empty( $wp_query->query_vars['doc_tag'] ) ) {
	1128	+ $is_betterdocs_query = true;
	1129	+ }
	1130	+
	1131	+ if ( isset( $wp_query->query_vars['knowledge_base'] ) && ! empty( $wp_query->query_vars['knowledge_base'] ) ) {
	1132	+ $is_betterdocs_query = true;
	1133	+ }
	1134	+
	1135	+ // Check if queried object is a BetterDocs taxonomy term
	1136	+ if ( isset( $wp_query->queried_object ) && isset( $wp_query->queried_object->taxonomy ) ) {
	1137	+ if ( in_array( $wp_query->queried_object->taxonomy, [ 'doc_category', 'doc_tag', 'knowledge_base' ] ) ) {
	1138	+ $is_betterdocs_query = true;
	1139	+ }
	1140	+ }
	1141	+
	1142	+ // Only proceed if this is a BetterDocs-related query
	1143	+ if ( ! $is_betterdocs_query ) {
	1144	+ return;
	1145	+ }
	1146	+
	1147	+ // Only initialize if it's not already a proper WP_Tax_Query instance
	1148	+ if ( ! isset( $wp_query->tax_query ) || ! is_a( $wp_query->tax_query, 'WP_Tax_Query' ) ) {
	1149	+ // Create a proper WP_Tax_Query instance with empty queries
	1150	+ $wp_query->tax_query = new \WP_Tax_Query( [] );
	1151	+ $wp_query->tax_query->queried_terms = [];
	1152	+ }
	1153	+
	1154	+ // For WPML compatibility: if queried_object is null, set it to an empty object
	1155	+ // but only if we're actually on a taxonomy page (is_tax is true)
	1156	+ if ( ! isset( $wp_query->queried_object ) && $wp_query->is_tax ) {
	1157	+ // Create a minimal WP_Term-like object to prevent errors
	1158	+ $wp_query->queried_object = new \stdClass();
	1159	+ $wp_query->queried_object->term_id = 0;
	1160	+ $wp_query->queried_object->name = '';
	1161	+ $wp_query->queried_object->slug = '';
	1162	+ $wp_query->queried_object->term_group = 0;
	1163	+ $wp_query->queried_object->term_taxonomy_id = 0;
	1164	+ $wp_query->queried_object->taxonomy = 'doc_category';
	1165	+ $wp_query->queried_object->description = '';
	1166	+ $wp_query->queried_object->parent = 0;
	1167	+ $wp_query->queried_object->count = 0;
	1168	+ $wp_query->queried_object->filter = 'raw';
	1169	+ }
	1170	+ }
	1171	+
	1172	+ protected function is_docs( &$query_vars ) {
	1173	+ if ( ! $this->settings->get( 'builtin_doc_page', true ) ) {
	1174	+ $query_vars['post_type'] = 'page';
	1175	+ $query_vars['name'] = trim( $this->rewrite->get_base_slug(), '/' );
	1176	+ }
	1177	+
	1178	+ return $query_vars;
	1179	+ }
	1180	+
	1181	+ public function is_docs_feed( $query_vars ) {
	1182	+ global $wp_rewrite;
	1183	+ return isset( $query_vars['feed'] ) && in_array( $query_vars['feed'], $wp_rewrite->feeds );
	1184	+ }
	1185	+
	1186	+ public function is_docs_author( $query_vars ) {
	1187	+ return isset( $query_vars['author'] ) ? true : false;
104	1188	}
105	1189
106	1190	protected function is_single_docs( $query_vars ) {
107		- if ( ! isset( $query_vars['name'] ) ) {
	1191	+ // Check for both 'name' and 'docs' query variables
	1192	+ if ( ! isset( $query_vars['name'] ) && ! isset( $query_vars['docs'] ) ) {
108	1193	return false;
109	1194	}
110	1195
111		- global $wpdb;
112		- $name = $query_vars['name'];
	1196	+ // phpcs:disable WordPress.DB.DirectDatabaseQuery.DirectQuery,WordPress.DB.DirectDatabaseQuery.NoCaching -- frontend single-doc URL resolution; queries vary per request and run on `parse_request`, before object cache is reliable.
	1197	+ global $wpdb;
	1198	+ $name = isset( $query_vars['docs'] ) ? $query_vars['docs'] : $query_vars['name'];
113	1199
114		- $_post_id = (int) $wpdb->get_var(
115		- $wpdb->prepare(
116		- "SELECT ID FROM {$wpdb->posts} WHERE post_name = %s AND post_type = %s LIMIT 1",
117		- esc_sql( $name ),
118		- 'docs'
119		- )
120		- );
121	1200
122		- return $_post_id > 0;
123		- }
	1201	+ // If doc_category is specified in the URL, validate that the post belongs to that category
	1202	+ if ( isset( $query_vars['doc_category'] ) ) {
	1203	+ $doc_category = $query_vars['doc_category'];
124	1204
125		- protected function is_docs_category( $query_vars ) {
126		- return $this->term_exists( $query_vars, 'doc_category' );
127		- }
128	1205
129		- protected function is_docs_tag( $query_vars ) {
130		- return $this->term_exists( $query_vars, 'doc_tag' );
131		- }
	1206	+ // Handle hierarchical category slugs (e.g., parent/child/grandchild)
	1207	+ $category_parts = explode('/', trim($doc_category, '/'));
	1208	+ $target_category_slug = end($category_parts); // Get the last part as the target category
132	1209
133		- protected function term_exists( $query_vars, $taxonomy ) {
134		- if ( ! isset( $query_vars[$taxonomy] ) ) {
135		- return false;
136		- }
137	1210
138		- return term_exists( $query_vars[$taxonomy], $taxonomy );
139		- }
	1211	+ // First, check if the post exists.
	1212	+ // When MKB is active, multiple translated posts share the same slug — one per KB.
	1213	+ // We MUST join the KB taxonomy so we select the post for the correct language/KB.
	1214	+ // Polylang/multilingual plugins store post_name URL-encoded; try the encoded form first.
	1215	+ $_encoded_name = rawurlencode( $name );
140	1216
141		- public function set_perma_structure( $structures = [] ) {
142		- $this->perma_structure = array_merge( $this->perma_structure, $structures );
143		- }
	1217	+ if ( isset( $query_vars['knowledge_base'] ) && ! empty( $query_vars['knowledge_base'] ) ) {
	1218	+ // KB-aware lookup: only select the post that is assigned to this KB.
	1219	+ // Also join doc_category when present so that, on Polylang/WPML sites
	1220	+ // where multiple translated posts share both the same post_name and
	1221	+ // the same KB term (e.g. all language variants assigned to the
	1222	+ // "advice" KB), we land on the translation whose doc_category matches
	1223	+ // the URL — not the one the DB happens to return first.
	1224	+ $_kb_slug = $query_vars['knowledge_base'];
	1225	+ $_kb_slug_enc = strtolower( rawurlencode( $_kb_slug ) );
144	1226
145		- public function set_query_vars( $query_vars = [] ) {
146		- $this->query_vars = array_merge( $this->query_vars, $query_vars );
147		- }
	1227	+ $_cat_target = $target_category_slug;
	1228	+ $_cat_target_enc = strtolower( rawurlencode( $_cat_target ) );
148	1229
149		- public function backward_compability( $wp ) {
150		- if ( static::$already_parsed ) {
151		- return;
152		- }
	1230	+ $_post_id = (int) $wpdb->get_var(
	1231	+ $wpdb->prepare(
	1232	+ "SELECT p.ID FROM {$wpdb->posts} p
	1233	+ INNER JOIN {$wpdb->term_relationships} tr_kb ON tr_kb.object_id = p.ID
	1234	+ INNER JOIN {$wpdb->term_taxonomy} tt_kb ON tt_kb.term_taxonomy_id = tr_kb.term_taxonomy_id AND tt_kb.taxonomy = 'knowledge_base'
	1235	+ INNER JOIN {$wpdb->terms} t_kb ON t_kb.term_id = tt_kb.term_id
	1236	+ INNER JOIN {$wpdb->term_relationships} tr_cat ON tr_cat.object_id = p.ID
	1237	+ INNER JOIN {$wpdb->term_taxonomy} tt_cat ON tt_cat.term_taxonomy_id = tr_cat.term_taxonomy_id AND tt_cat.taxonomy = 'doc_category'
	1238	+ INNER JOIN {$wpdb->terms} t_cat ON t_cat.term_id = tt_cat.term_id
	1239	+ WHERE p.post_name = %s AND p.post_type = 'docs'
	1240	+ AND t_kb.slug IN (%s, %s)
	1241	+ AND t_cat.slug IN (%s, %s)
	1242	+ LIMIT 1",
	1243	+ esc_sql( $_encoded_name ),
	1244	+ esc_sql( $_kb_slug ),
	1245	+ esc_sql( $_kb_slug_enc ),
	1246	+ esc_sql( $_cat_target_enc ),
	1247	+ esc_sql( $_cat_target )
	1248	+ )
	1249	+ );
	1250	+ // Fallback: post_name stored as decoded Unicode
	1251	+ if ( ! $_post_id && $_encoded_name !== $name ) {
	1252	+ $_post_id = (int) $wpdb->get_var(
	1253	+ $wpdb->prepare(
	1254	+ "SELECT p.ID FROM {$wpdb->posts} p
	1255	+ INNER JOIN {$wpdb->term_relationships} tr_kb ON tr_kb.object_id = p.ID
	1256	+ INNER JOIN {$wpdb->term_taxonomy} tt_kb ON tt_kb.term_taxonomy_id = tr_kb.term_taxonomy_id AND tt_kb.taxonomy = 'knowledge_base'
	1257	+ INNER JOIN {$wpdb->terms} t_kb ON t_kb.term_id = tt_kb.term_id
	1258	+ INNER JOIN {$wpdb->term_relationships} tr_cat ON tr_cat.object_id = p.ID
	1259	+ INNER JOIN {$wpdb->term_taxonomy} tt_cat ON tt_cat.term_taxonomy_id = tr_cat.term_taxonomy_id AND tt_cat.taxonomy = 'doc_category'
	1260	+ INNER JOIN {$wpdb->terms} t_cat ON t_cat.term_id = tt_cat.term_id
	1261	+ WHERE p.post_name = %s AND p.post_type = 'docs'
	1262	+ AND t_kb.slug IN (%s, %s)
	1263	+ AND t_cat.slug IN (%s, %s)
	1264	+ LIMIT 1",
	1265	+ esc_sql( $name ),
	1266	+ esc_sql( $_kb_slug ),
	1267	+ esc_sql( $_kb_slug_enc ),
	1268	+ esc_sql( $_cat_target_enc ),
	1269	+ esc_sql( $_cat_target )
	1270	+ )
	1271	+ );
	1272	+ }
153	1273
	1274	+ // Fallback to the KB-only lookup (no category filter) when nothing
	1275	+ // matched both KB + category. Keeps single-language behaviour intact
	1276	+ // and lets the category-validation block below handle any genuine
	1277	+ // mismatch by setting invalid_request_query_vars.
	1278	+ if ( ! $_post_id ) {
	1279	+ $_post_id = (int) $wpdb->get_var(
	1280	+ $wpdb->prepare(
	1281	+ "SELECT p.ID FROM {$wpdb->posts} p
	1282	+ INNER JOIN {$wpdb->term_relationships} tr ON tr.object_id = p.ID
	1283	+ INNER JOIN {$wpdb->term_taxonomy} tt ON tt.term_taxonomy_id = tr.term_taxonomy_id AND tt.taxonomy = 'knowledge_base'
	1284	+ INNER JOIN {$wpdb->terms} t ON t.term_id = tt.term_id
	1285	+ WHERE p.post_name = %s AND p.post_type = 'docs'
	1286	+ AND t.slug IN (%s, %s)
	1287	+ LIMIT 1",
	1288	+ esc_sql( $_encoded_name ),
	1289	+ esc_sql( $_kb_slug ),
	1290	+ esc_sql( $_kb_slug_enc )
	1291	+ )
	1292	+ );
	1293	+ if ( ! $_post_id && $_encoded_name !== $name ) {
	1294	+ $_post_id = (int) $wpdb->get_var(
	1295	+ $wpdb->prepare(
	1296	+ "SELECT p.ID FROM {$wpdb->posts} p
	1297	+ INNER JOIN {$wpdb->term_relationships} tr ON tr.object_id = p.ID
	1298	+ INNER JOIN {$wpdb->term_taxonomy} tt ON tt.term_taxonomy_id = tr.term_taxonomy_id AND tt.taxonomy = 'knowledge_base'
	1299	+ INNER JOIN {$wpdb->terms} t ON t.term_id = tt.term_id
	1300	+ WHERE p.post_name = %s AND p.post_type = 'docs'
	1301	+ AND t.slug IN (%s, %s)
	1302	+ LIMIT 1",
	1303	+ esc_sql( $name ),
	1304	+ esc_sql( $_kb_slug ),
	1305	+ esc_sql( $_kb_slug_enc )
	1306	+ )
	1307	+ );
	1308	+ }
	1309	+ }
	1310	+ } else {
	1311	+ // No KB in URL — disambiguate via doc_category. WPML/Polylang assign each
	1312	+ // translated post the same post_name (e.g. "spacious-family-home..."),
	1313	+ // so a plain `WHERE post_name = ... LIMIT 1` returns whichever language
	1314	+ // the DB serves first. When that pick does not belong to the category in
	1315	+ // the URL, the validation below falsely fires a 404 even though the
	1316	+ // correctly-translated post exists. Join doc_category so we land on the
	1317	+ // translation that actually owns the requested category.
	1318	+ $_cat_target = $target_category_slug;
	1319	+ $_cat_target_enc = strtolower( rawurlencode( $_cat_target ) );
	1320	+ $_post_id = (int) $wpdb->get_var(
	1321	+ $wpdb->prepare(
	1322	+ "SELECT p.ID FROM {$wpdb->posts} p
	1323	+ INNER JOIN {$wpdb->term_relationships} tr ON tr.object_id = p.ID
	1324	+ INNER JOIN {$wpdb->term_taxonomy} tt ON tt.term_taxonomy_id = tr.term_taxonomy_id AND tt.taxonomy = 'doc_category'
	1325	+ INNER JOIN {$wpdb->terms} t ON t.term_id = tt.term_id
	1326	+ WHERE p.post_name = %s AND p.post_type = 'docs'
	1327	+ AND t.slug IN (%s, %s)
	1328	+ LIMIT 1",
	1329	+ esc_sql( $_encoded_name ),
	1330	+ esc_sql( $_cat_target_enc ),
	1331	+ esc_sql( $_cat_target )
	1332	+ )
	1333	+ );
	1334	+ if ( ! $_post_id && $_encoded_name !== $name ) {
	1335	+ $_post_id = (int) $wpdb->get_var(
	1336	+ $wpdb->prepare(
	1337	+ "SELECT p.ID FROM {$wpdb->posts} p
	1338	+ INNER JOIN {$wpdb->term_relationships} tr ON tr.object_id = p.ID
	1339	+ INNER JOIN {$wpdb->term_taxonomy} tt ON tt.term_taxonomy_id = tr.term_taxonomy_id AND tt.taxonomy = 'doc_category'
	1340	+ INNER JOIN {$wpdb->terms} t ON t.term_id = tt.term_id
	1341	+ WHERE p.post_name = %s AND p.post_type = 'docs'
	1342	+ AND t.slug IN (%s, %s)
	1343	+ LIMIT 1",
	1344	+ esc_sql( $name ),
	1345	+ esc_sql( $_cat_target_enc ),
	1346	+ esc_sql( $_cat_target )
	1347	+ )
	1348	+ );
	1349	+ }
	1350	+
	1351	+ // Fallback: post exists with this name but not under the requested
	1352	+ // category. Let the category-validation block below handle the 404 so
	1353	+ // we keep the existing single-language behaviour intact.
	1354	+ if ( ! $_post_id ) {
	1355	+ $_post_id = (int) $wpdb->get_var(
	1356	+ $wpdb->prepare(
	1357	+ "SELECT ID FROM {$wpdb->posts} WHERE post_name = %s AND post_type = %s LIMIT 1",
	1358	+ esc_sql( $_encoded_name ),
	1359	+ 'docs'
	1360	+ )
	1361	+ );
	1362	+ if ( ! $_post_id && $_encoded_name !== $name ) {
	1363	+ $_post_id = (int) $wpdb->get_var(
	1364	+ $wpdb->prepare(
	1365	+ "SELECT ID FROM {$wpdb->posts} WHERE post_name = %s AND post_type = %s LIMIT 1",
	1366	+ esc_sql( $name ),
	1367	+ 'docs'
	1368	+ )
	1369	+ );
	1370	+ }
	1371	+ }
	1372	+ }
	1373	+
	1374	+ // If post exists, validate it belongs to the category in the URL
	1375	+ if ( $_post_id > 0 ) {
	1376	+
	1377	+ // When hierarchical slugs are enabled, check if post belongs to any category in the path
	1378	+ $has_category = false;
	1379	+
	1380	+ if ( $this->settings->get( 'enable_category_hierarchy_slugs' ) && count($category_parts) > 1 ) {
	1381	+
	1382	+ // Check if post belongs to ANY category in the hierarchy path
	1383	+ // For example, if URL is "update/overview", check for both "update" and "overview"
	1384	+ $category_slugs_to_check = $category_parts;
	1385	+
	1386	+ foreach ( $category_slugs_to_check as $cat_slug ) {
	1387	+
	1388	+ // rawurlencode produces uppercase hex (%E0%...) but WP/Polylang stores lowercase (%e0%).
	1389	+ // Always normalise to lowercase so the slug IN (...) comparison succeeds.
	1390	+ $_encoded_cat = strtolower( rawurlencode( $cat_slug ) );
	1391	+ $cat_check = $wpdb->get_var(
	1392	+ $wpdb->prepare(
	1393	+ "SELECT COUNT(*) FROM {$wpdb->term_relationships} tr
	1394	+ INNER JOIN {$wpdb->term_taxonomy} tt ON tr.term_taxonomy_id = tt.term_taxonomy_id
	1395	+ INNER JOIN {$wpdb->terms} t ON tt.term_id = t.term_id
	1396	+ WHERE tr.object_id = %d AND t.slug IN (%s, %s) AND tt.taxonomy = %s",
	1397	+ $_post_id,
	1398	+ esc_sql( $_encoded_cat ),
	1399	+ esc_sql( $cat_slug ),
	1400	+ 'doc_category'
	1401	+ )
	1402	+ );
	1403	+
	1404	+ if ( $cat_check > 0 ) {
	1405	+ // If knowledge_base is set, verify the category belongs to that KB
	1406	+ if ( isset( $query_vars['knowledge_base'] ) ) {
	1407	+
	1408	+ // Get the term ID - use our helper that tries both decoded and encoded forms.
	1409	+ $term = $this->get_term_by_slug_or_encoded( $cat_slug, 'doc_category' );
	1410	+ if ( $term ) {
	1411	+ $term_kbs = get_term_meta( $term->term_id, 'doc_category_knowledge_base', true );
	1412	+
	1413	+ // Primary check: category's stored KB meta includes the requested KB.
	1414	+ if ( is_array( $term_kbs ) && in_array( $query_vars['knowledge_base'], $term_kbs ) ) {
	1415	+ $has_category = true;
	1416	+ break;
	1417	+ }
	1418	+
	1419	+ // Fallback: for Polylang/multilingual sites the term meta may store the
	1420	+ // original-language KB slug while the URL uses the translated slug.
	1421	+ // Verify instead that the post is actually assigned to the requested KB.
	1422	+ // wp_get_post_terms may return slugs URL-encoded (Polylang) or decoded (standard WP).
	1423	+ // Normalise everything to lowercase for comparison.
	1424	+ $kb_slug_url = $query_vars['knowledge_base'];
	1425	+ $kb_slug_enc = strtolower( rawurlencode( $kb_slug_url ) );
	1426	+ $post_kbs = wp_get_post_terms( $_post_id, 'knowledge_base', [ 'fields' => 'slugs' ] );
	1427	+ $post_kbs_lower = array_map( 'strtolower', is_array( $post_kbs ) ? $post_kbs : [] );
	1428	+ if ( ! is_wp_error( $post_kbs ) &&
	1429	+ ( in_array( $kb_slug_url, $post_kbs_lower ) || in_array( $kb_slug_enc, $post_kbs_lower ) ) ) {
	1430	+ $has_category = true;
	1431	+ break;
	1432	+ }
	1433	+ }
	1434	+ } else {
	1435	+
	1436	+ // No KB in URL, so any category match is valid
	1437	+ $has_category = true;
	1438	+ break;
	1439	+ }
	1440	+ }
	1441	+ }
	1442	+ } else {
	1443	+ // Non-hierarchical or single category - check only the target category
	1444	+ // Always lowercase-encode so the slug matches WP/Polylang's stored lowercase hex.
	1445	+ $_encoded_target = strtolower( rawurlencode( $target_category_slug ) );
	1446	+ $has_category = $wpdb->get_var(
	1447	+ $wpdb->prepare(
	1448	+ "SELECT COUNT(*) FROM {$wpdb->term_relationships} tr
	1449	+ INNER JOIN {$wpdb->term_taxonomy} tt ON tr.term_taxonomy_id = tt.term_taxonomy_id
	1450	+ INNER JOIN {$wpdb->terms} t ON tt.term_id = t.term_id
	1451	+ WHERE tr.object_id = %d AND t.slug IN (%s, %s) AND tt.taxonomy = %s",
	1452	+ $_post_id,
	1453	+ esc_sql( $_encoded_target ),
	1454	+ esc_sql( $target_category_slug ),
	1455	+ 'doc_category'
	1456	+ )
	1457	+ );
	1458	+
	1459	+ // If knowledge_base is set and category was found, verify the POST belongs to that KB.
	1460	+ // We use the post's actual KB taxonomy terms as the source of truth,
	1461	+ // NOT the doc_category_knowledge_base meta (which can be stale or misconfigured).
	1462	+ // Only block if the post is explicitly assigned to OTHER KBs that don't include the requested one.
	1463	+ if ( $has_category && isset( $query_vars['knowledge_base'] ) ) {
	1464	+ $post_kbs = wp_get_post_terms( $_post_id, 'knowledge_base', [ 'fields' => 'slugs' ] );
	1465	+ if ( ! is_wp_error( $post_kbs ) && ! empty( $post_kbs ) ) {
	1466	+ $kb_slug = $query_vars['knowledge_base'];
	1467	+ // PHP's rawurlencode() produces uppercase (%E0%A6...) but WordPress/Polylang stores
	1468	+ // slugs with lowercase hex (%e0%a6...). Normalise both sides to lowercase.
	1469	+ $kb_slug_encoded = strtolower( rawurlencode( $kb_slug ) );
	1470	+ $post_kbs_lower = array_map( 'strtolower', $post_kbs );
	1471	+ // Check decoded form (standard WP) and encoded form (Polylang).
	1472	+ if ( ! in_array( $kb_slug, $post_kbs_lower ) && ! in_array( $kb_slug_encoded, $post_kbs_lower ) ) {
	1473	+ $has_category = false;
	1474	+ }
	1475	+ }
	1476	+ }
	1477	+
	1478	+
	1479	+ }
	1480	+
	1481	+ // Special handling for uncategorized docs
	1482	+ if ( ! $has_category && $target_category_slug === 'uncategorized' ) {
	1483	+ // Check if the post has no categories assigned at all
	1484	+ $category_count = $wpdb->get_var(
	1485	+ $wpdb->prepare(
	1486	+ "SELECT COUNT(*) FROM {$wpdb->term_relationships} tr
	1487	+ INNER JOIN {$wpdb->term_taxonomy} tt ON tr.term_taxonomy_id = tt.term_taxonomy_id
	1488	+ WHERE tr.object_id = %d AND tt.taxonomy = %s",
	1489	+ $_post_id,
	1490	+ 'doc_category'
	1491	+ )
	1492	+ );
	1493	+
	1494	+ // If post has no categories, allow it for uncategorized URL
	1495	+ if ( $category_count == 0 ) {
	1496	+ $has_category = true;
	1497	+ }
	1498	+ }
	1499	+
	1500	+
	1501	+ // If post doesn't belong to the target category, return false (404)
	1502	+ if ( ! $has_category ) {
	1503	+ // Remember these query vars so we can block any canonical redirect for this invalid URL
	1504	+ $this->invalid_request_query_vars = $query_vars;
	1505	+ return false;
	1506	+ }
	1507	+
	1508	+ // If hierarchical slugs are enabled and we found a post, validate the full hierarchy
	1509	+ if ( $this->settings->get( 'enable_category_hierarchy_slugs' ) && count($category_parts) > 1 ) {
	1510	+ // Get the post's category terms
	1511	+ $post_categories = wp_get_object_terms( $_post_id, 'doc_category' );
	1512	+
	1513	+ if ( ! empty( $post_categories ) ) {
	1514	+ $found_valid_hierarchy = false;
	1515	+
	1516	+ foreach ( $post_categories as $post_category ) {
	1517	+ // Build the hierarchy path for this category
	1518	+ $hierarchy_path = [];
	1519	+ $current_term = $post_category;
	1520	+
	1521	+ // Build path from child to parent
	1522	+ while ( $current_term ) {
	1523	+ array_unshift( $hierarchy_path, $current_term->slug );
	1524	+ $current_term = $current_term->parent ? get_term( $current_term->parent, 'doc_category' ) : null;
	1525	+ }
	1526	+
	1527	+ // Check if this hierarchy matches the URL structure.
	1528	+ // WordPress/Polylang store non-Latin term slugs URL-encoded
	1529	+ // (%e0%a6...) while $doc_category arrives decoded from
	1530	+ // is_perma_valid_for. Compare in the decoded form so Bengali,
	1531	+ // Arabic, CJK, etc. hierarchies actually match.
	1532	+ $built_path = implode('/', $hierarchy_path);
	1533	+ $built_path_norm = urldecode( $built_path );
	1534	+ $doc_cat_norm = urldecode( $doc_category );
	1535	+
	1536	+ // Allow partial path matching to accommodate KB-prefixed URLs or partial hierarchies.
	1537	+ // Using substr for broad PHP version compatibility (equivalent to str_ends_with).
	1538	+ $is_suffix = strlen( $built_path_norm ) > 0 && substr( $doc_cat_norm, -strlen( $built_path_norm ) ) === $built_path_norm;
	1539	+ $is_prefix = strlen( $doc_cat_norm ) > 0 && substr( $built_path_norm, -strlen( $doc_cat_norm ) ) === $doc_cat_norm;
	1540	+
	1541	+ if ( $built_path_norm === $doc_cat_norm || $is_suffix || $is_prefix ) {
	1542	+ $found_valid_hierarchy = true;
	1543	+ break;
	1544	+ }
	1545	+ }
	1546	+
	1547	+ // If no valid hierarchy found, return false (404)
	1548	+ if ( ! $found_valid_hierarchy ) {
	1549	+ return false;
	1550	+ }
	1551	+ }
	1552	+ }
	1553	+ }
	1554	+ } else {
	1555	+ // First, check if the post exists.
	1556	+ // When MKB is active, multiple translated posts share the same slug — one per KB.
	1557	+ // Join the KB taxonomy when knowledge_base is in the URL to find the right post.
	1558	+ $_encoded_name = rawurlencode( $name );
	1559	+
	1560	+ if ( isset( $query_vars['knowledge_base'] ) && ! empty( $query_vars['knowledge_base'] ) ) {
	1561	+ $_kb_slug = $query_vars['knowledge_base'];
	1562	+ $_kb_slug_enc = strtolower( rawurlencode( $_kb_slug ) );
	1563	+ $_post_id = (int) $wpdb->get_var(
	1564	+ $wpdb->prepare(
	1565	+ "SELECT p.ID FROM {$wpdb->posts} p
	1566	+ INNER JOIN {$wpdb->term_relationships} tr ON tr.object_id = p.ID
	1567	+ INNER JOIN {$wpdb->term_taxonomy} tt ON tt.term_taxonomy_id = tr.term_taxonomy_id AND tt.taxonomy = 'knowledge_base'
	1568	+ INNER JOIN {$wpdb->terms} t ON t.term_id = tt.term_id
	1569	+ WHERE p.post_name = %s AND p.post_type = 'docs'
	1570	+ AND t.slug IN (%s, %s)
	1571	+ LIMIT 1",
	1572	+ esc_sql( $_encoded_name ),
	1573	+ esc_sql( $_kb_slug ),
	1574	+ esc_sql( $_kb_slug_enc )
	1575	+ )
	1576	+ );
	1577	+ if ( ! $_post_id && $_encoded_name !== $name ) {
	1578	+ $_post_id = (int) $wpdb->get_var(
	1579	+ $wpdb->prepare(
	1580	+ "SELECT p.ID FROM {$wpdb->posts} p
	1581	+ INNER JOIN {$wpdb->term_relationships} tr ON tr.object_id = p.ID
	1582	+ INNER JOIN {$wpdb->term_taxonomy} tt ON tt.term_taxonomy_id = tr.term_taxonomy_id AND tt.taxonomy = 'knowledge_base'
	1583	+ INNER JOIN {$wpdb->terms} t ON t.term_id = tt.term_id
	1584	+ WHERE p.post_name = %s AND p.post_type = 'docs'
	1585	+ AND t.slug IN (%s, %s)
	1586	+ LIMIT 1",
	1587	+ esc_sql( $name ),
	1588	+ esc_sql( $_kb_slug ),
	1589	+ esc_sql( $_kb_slug_enc )
	1590	+ )
	1591	+ );
	1592	+ }
	1593	+ } else {
	1594	+ $_post_id = (int) $wpdb->get_var(
	1595	+ $wpdb->prepare(
	1596	+ "SELECT ID FROM {$wpdb->posts} WHERE post_name = %s AND post_type = %s LIMIT 1",
	1597	+ esc_sql( $_encoded_name ),
	1598	+ 'docs'
	1599	+ )
	1600	+ );
	1601	+ if ( ! $_post_id && $_encoded_name !== $name ) {
	1602	+ $_post_id = (int) $wpdb->get_var(
	1603	+ $wpdb->prepare(
	1604	+ "SELECT ID FROM {$wpdb->posts} WHERE post_name = %s AND post_type = %s LIMIT 1",
	1605	+ esc_sql( $name ),
	1606	+ 'docs'
	1607	+ )
	1608	+ );
	1609	+ }
	1610	+ }
	1611	+
	1612	+
	1613	+ // If knowledge_base is set, validate the post actually belongs to that KB.
	1614	+ // wp_get_post_terms may return slugs URL-encoded (Polylang) or decoded (standard WP).
	1615	+ // Check both forms so the match works regardless of storage format.
	1616	+ if ( $_post_id > 0 && isset( $query_vars['knowledge_base'] ) ) {
	1617	+ $post_kbs = wp_get_post_terms( $_post_id, 'knowledge_base', [ 'fields' => 'slugs' ] );
	1618	+ if ( ! is_wp_error( $post_kbs ) && ! empty( $post_kbs ) ) {
	1619	+ $kb_slug = $query_vars['knowledge_base'];
	1620	+ $kb_slug_encoded = strtolower( rawurlencode( $kb_slug ) );
	1621	+ $post_kbs_lower = array_map( 'strtolower', $post_kbs );
	1622	+ if ( ! in_array( $kb_slug, $post_kbs_lower ) && ! in_array( $kb_slug_encoded, $post_kbs_lower ) ) {
	1623	+ // Remember these query vars so we can block any canonical redirect for this invalid URL
	1624	+ $this->invalid_request_query_vars = $query_vars;
	1625	+ return false;
	1626	+ }
	1627	+ }
	1628	+ // If post has no KB terms → allow it (not assigned to any KB explicitly).
	1629	+ }
	1630	+ }
	1631	+
	1632	+ return $_post_id > 0;
	1633	+ // phpcs:enable WordPress.DB.DirectDatabaseQuery.DirectQuery,WordPress.DB.DirectDatabaseQuery.NoCaching
	1634	+ }
	1635	+
	1636	+ protected function is_docs_category( $query_vars ) {
	1637	+ $result = $this->term_exists( $query_vars, 'doc_category' );
	1638	+ return $result;
	1639	+ }
	1640	+
	1641	+ protected function is_docs_tag( $query_vars ) {
	1642	+ return $this->term_exists( $query_vars, 'doc_tag' );
	1643	+ }
	1644	+
	1645	+ protected function term_exists( $query_vars, $taxonomy ) {
	1646	+ if ( ! isset( $query_vars[ $taxonomy ] ) ) {
	1647	+ return false;
	1648	+ }
	1649	+
	1650	+ // WordPress/Polylang stores non-Latin slugs URL-encoded (%e0%a6...) but the query var
	1651	+ // arrives already decoded (e.g. বেটারডক্স). Try the decoded form first, then encoded.
	1652	+ if ( term_exists( $query_vars[ $taxonomy ], $taxonomy ) ) {
	1653	+ return true;
	1654	+ }
	1655	+ $encoded = strtolower( rawurlencode( $query_vars[ $taxonomy ] ) );
	1656	+ if ( $encoded !== $query_vars[ $taxonomy ] && term_exists( $encoded, $taxonomy ) ) {
	1657	+ return true;
	1658	+ }
	1659	+ return false;
	1660	+ }
	1661	+
	1662	+ /**
	1663	+ * Look up a taxonomy term by slug, trying both the raw (possibly Unicode-decoded) form
	1664	+ * and the lowercase URL-encoded form that WordPress/Polylang stores for non-Latin slugs.
	1665	+ *
	1666	+ * @param string $slug Slug to look up (may be decoded Unicode, e.g. বেটারডক্স).
	1667	+ * @param string $taxonomy Taxonomy name.
	1668	+ * @return \WP_Term|false
	1669	+ */
	1670	+ protected function get_term_by_slug_or_encoded( $slug, $taxonomy ) {
	1671	+ $term = get_term_by( 'slug', $slug, $taxonomy );
	1672	+ if ( $term ) {
	1673	+ return $term;
	1674	+ }
	1675	+ // Fallback: WordPress/Polylang stores non-Latin slugs as lowercase percent-encoded strings.
	1676	+ $encoded = strtolower( rawurlencode( $slug ) );
	1677	+ if ( $encoded !== $slug ) {
	1678	+ $term = get_term_by( 'slug', $encoded, $taxonomy );
	1679	+ }
	1680	+ return $term ? $term : false;
	1681	+ }
	1682	+
	1683	+ public function set_perma_structure( $structures = [] ) {
	1684	+ $this->perma_structure = array_merge( $this->perma_structure, $structures );
	1685	+ }
	1686	+
	1687	+ public function set_query_vars( $query_vars = [] ) {
	1688	+ $this->query_vars = array_merge( $this->query_vars, $query_vars );
	1689	+ }
	1690	+
	1691	+ public function backward_compability( $wp ) {
	1692	+ if ( static::$already_parsed ) {
	1693	+ return;
	1694	+ }
	1695	+
	1696	+ $this->permalink_magic( $wp );
	1697	+ }
	1698	+
	1699	+ public function parse( $wp ) {
	1700	+ static::$already_parsed = true;
	1701	+
	1702	+ // An API Reference rewrite rule already matched (/docs/api/{slug}).
	1703	+ // The permalink magic below re-interprets the raw path against the
	1704	+ // docs/category/KB structures and would hijack the request whenever a
	1705	+ // doc_category or knowledge_base term shares the reference's slug —
	1706	+ // an explicit CPT match always wins.
	1707	+ if ( isset( $wp->query_vars['betterdocs_api_ref'] ) ) {
	1708	+ return;
	1709	+ }
	1710	+
	1711	+ // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedHooknameFound -- legacy public filter name, retained for back-compat with Pro/extensions.
	1712	+ $this->perma_structure = apply_filters('docs_rewrite_rules', $this->perma_structure);
	1713	+
154	1714	$this->permalink_magic( $wp );
155	1715	}
156	1716
157		- public function parse( $wp ) {
158		- static::$already_parsed = true;
	1717	+ protected function permalink_magic( $wp ) {
	1718	+ $this->wp_query_vars = $wp->query_vars;
159	1719
160		- $this->permalink_magic( $wp );
161		- }
	1720	+ if ( ! empty( $this->perma_structure ) ) {
	1721	+ $_valid = [];
162	1722
163		- protected function permalink_magic( $wp ) {
164		- $this->wp_query_vars = $wp->query_vars;
	1723	+ // Normalize request path: remove index.php/ and leading/trailing slashes.
	1724	+ // urldecode is correct here: $wp->request arrives decoded by PHP/Apache, and the structure
	1725	+ // regex patterns (e.g. "docs/%knowledge_base%") are plain ASCII, so matching works fine.
	1726	+ // DB lookups handle the encoding separately below.
	1727	+ $request = isset( $wp->request ) ? urldecode( $wp->request ) : '';
	1728	+ $request = trim( preg_replace( '#^index\.php(/|$)#', '', $request ), '/' );
165	1729
166		- if ( ! empty( $this->perma_structure ) ) {
167		- $_valid = [];
	1730	+ // Strip pagination segment (/page/N) before matching permalink structures.
	1731	+ // When hierarchy slugs are enabled, the (.+?) regex for %doc_category% would
	1732	+ // otherwise capture "/page/2" as part of the category slug, breaking pagination.
	1733	+ $paged = 0;
	1734	+ if ( preg_match( '#/page/([0-9]+)/?$#', $request, $page_matches ) ) {
	1735	+ $paged = intval( $page_matches[1] );
	1736	+ $request = preg_replace( '#/page/[0-9]+/?$#', '', $request );
	1737	+ }
168	1738
169		- foreach ( $this->perma_structure as $_type => $structure ) {
170		- $_perma_vars = $this->is_perma_valid_for( $structure, $wp->request );
	1739	+ // Strip optional language prefix injected by Polylang/WPML (e.g. "en/", "bn/", "pt-br/")
	1740	+ // so that "bn/docs/..." matches the structure "docs/..." correctly.
	1741	+ $request_without_lang = preg_replace( '#^[a-zA-Z]{2,3}(?:-[a-zA-Z0-9]{2,8})?/#', '', $request );
171	1742
	1743	+ // When WPML translates a taxonomy base slug per language (e.g. doc_tag
	1744	+ // "docs-tag" -> "docs-tag-bn"), the incoming URL uses the translated slug,
	1745	+ // but perma_structure is built from the default-language slug. Map the
	1746	+ // leading translated slug back to its default so the raw structures match.
	1747	+ // No-op on non-WPML sites and when the slug isn't translated.
	1748	+ $request_canonical = $this->canonicalize_translated_slug( $request_without_lang );
	1749	+
	1750	+ foreach ( $this->perma_structure as $_type => $structure ) {
	1751	+ // First try the raw (possibly language-prefixed) request, then the lang-stripped variant.
	1752	+ // This ensures we still match non-multilingual sites without stripping valid slugs.
	1753	+ $_perma_vars = $this->is_perma_valid_for( $structure, $request );
	1754	+ if ( ! $_perma_vars && $request_without_lang !== $request ) {
	1755	+ $_perma_vars = $this->is_perma_valid_for( $structure, $request_without_lang );
	1756	+ }
	1757	+ if ( ! $_perma_vars && $request_canonical !== $request_without_lang ) {
	1758	+ $_perma_vars = $this->is_perma_valid_for( $structure, $request_canonical );
	1759	+ }
	1760	+
172	1761	// $_valid = empty( $_valid ) && $_perma_vars ? [ 'type' => $_type, 'query_vars' => $_perma_vars ] : $_valid;
173		- if ( ( $_perma_vars && method_exists( $this, $_type ) && call_user_func_array( [$this, $_type], [ & $_perma_vars] ) ) ) {
	1762	+ if ( ( $_perma_vars && method_exists( $this, $_type ) && call_user_func_array( [$this, $_type], [ & $_perma_vars] ) ) ) {
	1763	+
174	1764	// dump( $_type, $_perma_vars );
175		- if ( $_type === 'is_single_docs' || $_type == 'is_docs_feed' ) {
	1765	+ if ( $_type === 'is_single_docs' || $_type == 'is_docs_feed' || $_type == 'is_docs_author' ) {
176	1766	$_perma_vars['post_type'] = 'docs';
177	1767	}
178	1768	$_valid = ['type' => $_type, 'query_vars' => $_perma_vars];
	1769	+
	1770	+ // Single doc match is definitive — stop here so later category/KB archive
	1771	+ // structures cannot overwrite it (e.g. is_knowledge_base_category).
	1772	+ if ( $_type === 'is_single_docs' ) {
	1773	+ break;
	1774	+ }
179	1775	}
180	1776	}
181	1777
182		- $type = isset( $_valid['type'] ) ? $_valid['type'] : '';
183		- $query_vars = isset( $_valid['query_vars'] ) ? $_valid['query_vars'] : [];
	1778	+ $type = isset( $_valid['type'] ) ? $_valid['type'] : '';
	1779	+ $query_vars = isset( $_valid['query_vars'] ) ? $_valid['query_vars'] : [];
184	1780
185		- if ( ! empty( $type ) ) {
186		- unset( $this->query_vars[$type] );
187		- array_map( function ( $_vars ) use ( &$wp ) {
188		- array_map( function ( $_var ) use ( &$wp ) {
189		- unset( $wp->query_vars[$_var] );
190		- }, $_vars );
191		- }, $this->query_vars );
192		- }
	1781	+ // Inject the paged query var if a /page/N segment was stripped from the request.
	1782	+ if ( $paged > 0 && ! empty( $type ) ) {
	1783	+ $query_vars['paged'] = $paged;
	1784	+ }
193	1785
	1786	+ if ( ! empty( $type ) ) {
	1787	+ unset( $this->query_vars[ $type ] );
	1788	+ array_map(
	1789	+ function ( $_vars ) use ( &$wp ) {
	1790	+ array_map(
	1791	+ function ( $_var ) use ( &$wp ) {
	1792	+ unset( $wp->query_vars[ $_var ] );
	1793	+ },
	1794	+ $_vars
	1795	+ );
	1796	+ },
	1797	+ $this->query_vars
	1798	+ );
	1799	+ }
	1800	+
194	1801	$wp->query_vars = is_array( $query_vars ) ? array_merge( $wp->query_vars, $query_vars ) : $wp->query_vars;
195		- //var_dump($_valid);
	1802	+
196	1803	// Fallback
197		- if( ! empty( $_valid ) ) {
	1804	+ if ( ! empty( $_valid ) ) {
198	1805	unset( $wp->query_vars['attachment'] );
199	1806	}
200	1807	}
201	1808	}
202	1809
203		- /**
204		- * This method is responsible for checking a structure is valid again a request.
205		- *
206		- * @param string $structure
207		- * @param string $request
208		- * @return array|bool
209		- */
210		- private function is_perma_valid_for( $structure, $request ) {
211		- if ( empty( $structure ) ) {
212		- return false;
213		- }
	1810	+ /**
	1811	+ * Map a leading WPML-translated taxonomy base slug back to its default-language
	1812	+ * value so the default-language perma_structure patterns can match a translated URL.
	1813	+ *
	1814	+ * Only the first path segment is considered (the taxonomy base). Returns the
	1815	+ * request unchanged when WPML is inactive or the leading segment isn't a
	1816	+ * translated BetterDocs slug.
	1817	+ *
	1818	+ * @param string $request Language-stripped request path (no leading/trailing slash).
	1819	+ * @return string
	1820	+ */
	1821	+ private function canonicalize_translated_slug( $request ) {
	1822	+ if ( $request === '' || strpos( $request, '/' ) === false ) {
	1823	+ return $request;
	1824	+ }
214	1825
215		- $_tags = explode( '/', trim( $structure, '/' ) );
216		- $_replace_matched_tags = [];
	1826	+ $slug_map = [
	1827	+ 'doc_tag' => trim( $this->settings->get( 'tag_slug', 'docs-tag' ), '/' ),
	1828	+ 'doc_category' => trim( $this->settings->get( 'category_slug', 'docs-category' ), '/' ),
	1829	+ ];
217	1830
218		- $_replace_tags = array_filter( $_tags, function ( $item ) use ( &$_replace_matched_tags ) {
219		- $_is_valid = strpos( $item, '%' ) !== false;
220		- if ( $_is_valid ) {
221		- $_replace_matched_tags[] = trim( $item, '%' );
222		- }
223		- return $_is_valid;
224		- } );
	1831	+ $segments = explode( '/', $request );
225	1832
226		- $_perma_structure = preg_quote( $structure, '/' );
227		- $_perma_structure = str_replace( $_replace_tags, '([^\/]+)', $_perma_structure );
	1833	+ foreach ( $slug_map as $taxonomy => $default ) {
	1834	+ if ( $default === '' ) {
	1835	+ continue;
	1836	+ }
228	1837
229		- preg_match( "/^$_perma_structure$/", $request, $matches );
	1838	+ $translated = Helper::wpml_translated_tax_slug( $taxonomy, $default );
	1839	+ if ( $translated !== $default && $segments[0] === $translated ) {
	1840	+ $segments[0] = $default;
	1841	+ return implode( '/', $segments );
	1842	+ }
	1843	+ }
230	1844
231		- if ( empty( $matches ) || ! is_array( $matches ) ) {
232		- return false;
233		- }
	1845	+ return $request;
	1846	+ }
234	1847
235		- if ( count( $matches ) === 1 ) {
236		- return ['post_type' => 'docs'];
237		- }
	1848	+ /**
	1849	+ * This method is responsible for checking a structure is valid again a request.
	1850	+ *
	1851	+ * @param string $structure
	1852	+ * @param string $request
	1853	+ * @return array|bool
	1854	+ */
	1855	+ private function is_perma_valid_for( $structure, $request ) {
	1856	+ if ( empty( $structure ) ) {
	1857	+ return false;
	1858	+ }
238	1859
239		- unset( $matches[0] );
	1860	+ $_tags = explode( '/', trim( $structure, '/' ) );
	1861	+ $_replace_matched_tags = [];
240	1862
241		- return array_combine( $_replace_matched_tags, $matches );
242		- }
	1863	+ $_replace_tags = array_filter(
	1864	+ $_tags,
	1865	+ function ( $item ) use ( &$_replace_matched_tags ) {
	1866	+ $_is_valid = strpos( $item, '%' ) !== false;
	1867	+ if ( $_is_valid ) {
	1868	+ $_replace_matched_tags[] = trim( $item, '%' );
	1869	+ }
	1870	+ return $_is_valid;
	1871	+ }
	1872	+ );
	1873	+
	1874	+ // First, preg_quote the structure to safely use it in a regex
	1875	+ $_perma_structure = preg_quote( $structure, '#' );
	1876	+
	1877	+ // Since our placeholders like %name% contain characters (like %) that preg_quote escapes,
	1878	+ // we must also preg_quote the tags before searching for them in the escaped structure.
	1879	+ foreach ( $_replace_tags as $tag ) {
	1880	+ $tag_escaped = preg_quote( $tag, '#' );
	1881	+ $replacement = '([^/]+)';
	1882	+
	1883	+ // If hierarchical slugs are enabled, allow slashes in the %doc_category% placeholder
	1884	+ if ( $tag === '%doc_category%' && $this->settings->get( 'enable_category_hierarchy_slugs' ) ) {
	1885	+ $replacement = '(.+?)';
	1886	+ }
	1887	+
	1888	+ $_perma_structure = str_replace( $tag_escaped, $replacement, $_perma_structure );
	1889	+ }
	1890	+
	1891	+ preg_match( "#^$_perma_structure$#", $request, $matches );
	1892	+
	1893	+ if ( empty( $matches ) || ! is_array( $matches ) ) {
	1894	+ return false;
	1895	+ }
	1896	+
	1897	+ if ( count( $matches ) === 1 ) {
	1898	+ return [ 'post_type' => 'docs' ];
	1899	+ }
	1900	+
	1901	+ unset( $matches[0] );
	1902	+
	1903	+ return array_combine( $_replace_matched_tags, $matches );
	1904	+ }
243	1905	}