thinkrank / includes / seo / class-builder-content.php

class-builder-content.php in ThinkRank AI SEO – AI SEO Plugin for WordPress: Schema, XML Sitemaps, Meta Tags, Search Console & Local SEO 2.10.0, at includes/seo/class-builder-content.php

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1	<?php
2	/**
3	* Page-builder content extraction.
4	*
5	* SEO analysis reads `post_content`, which is only the real text on a classic
6	* post. Page builders keep the words somewhere else, and every server-side
7	* scoring path — bulk analysis, the post-list SEO Overview column, the MCP
8	* abilities, cron reports — saw an empty page as a result:
9	*
10	* - Oxygen / Breakdance leave `post_content` completely EMPTY and store the
11	* node tree in postmeta. Nothing to render, nothing to strip: the analyzer
12	* reported "No content" on pages with well over a thousand visible words.
13	* - Elementor does the same via `_elementor_data`.
14	* - Divi 5 and Gutenberg do store block markup in `post_content`, but Divi
15	* keeps module text inside the block's JSON attributes — inside an HTML
16	* comment, which tag stripping removes wholesale.
17	* - Divi 4 and other shortcode builders keep text in shortcode attributes.
18	*
19	* Extraction reads the builder's own stored data rather than invoking its
20	* render engine. Rendering an Oxygen page outside a front-end request is slow,
21	* stateful and can fatal in an admin context, whereas the stored tree is just
22	* JSON — cheap, side-effect free and safe to touch during a bulk run.
23	*
24	* @package ThinkRank\SEO
25	* @since 1.23.0
26	*/
27
28	declare(strict_types=1);
29
30	namespace ThinkRank\SEO;
31
32	if (!defined('ABSPATH')) {
33	exit;
34	}
35
36	/**
37	* Resolves the analyzable content of a post, whatever built it.
38	*/
39	class Builder_Content {
40
41	/**
42	* Post meta keys that hold builder data, in priority order.
43	*
44	* Several generations of the same builder are listed on purpose: Oxygen 6
45	* is Breakdance under the hood (`_breakdance_data`), while earlier Oxygen
46	* releases used `_oxygen_data` or the shortcode-based
47	* `ct_builder_shortcodes`. A site can only have one of them.
48	*
49	* @var string[]
50	*/
51	private const BUILDER_META_KEYS = [
52	'_breakdance_data', // Oxygen 6+ / Breakdance
53	'_oxygen_data', // Oxygen (earlier releases)
54	// Oxygen classic. 4.x writes the tree as JSON to `ct_builder_json`
55	// while still keeping `ct_builder_shortcodes`. A post carrying only
56	// the JSON key used to match no key at all and fall through to an
57	// empty `post_content`, which reads as a one-word page (#776).
58	//
59	// Oxygen 4.8.3 then renamed every `ct_` post meta key to `_ct_`
60	// (`oxygen_vsb_update_4_8_3()` runs `oxy_prefix_meta_keys()` on
61	// upgrade, and `oxy_get_post_meta()` only reads the prefixed name
62	// from then on). A current Oxygen classic site therefore has only the
63	// underscored keys, which nothing here listed, so every one of its
64	// pages resolved as empty. The prefixed keys come first because they
65	// are what Oxygen itself reads; the bare ones cover a site that has
66	// not run the migration (or reverted it with `?unprefix_meta`).
67	//
68	// These four are not read in this loop: from_oxygen_classic() pairs
69	// each JSON key with its shortcode sibling so the two forms can be
70	// compared. They are listed here because this list is also what the
71	// word-count index watches and what FAQ detection scans.
72	'_ct_builder_json', // Oxygen classic 4.8.3+ (JSON tree)
73	'ct_builder_json', // Oxygen classic 4.0-4.8.2 (JSON tree)
74	'_ct_builder_shortcodes', // Oxygen classic 4.8.3+ (shortcode tree)
75	'ct_builder_shortcodes', // Oxygen classic < 4.8.3 (shortcode tree)
76	'_elementor_data', // Elementor
77	// Beaver Builder. Published layout first: `_fl_builder_draft` holds
78	// unsaved changes and would score content the visitor cannot see.
79	// Both are arrays of stdClass nodes, which is why the walker below
80	// has to treat objects like arrays (#449).
81	'_fl_builder_data', // Beaver Builder (published)
82	'_fl_builder_draft', // Beaver Builder (unsaved changes)
83	];
84
85	/**
86	* Bricks' content-area meta key, used when Bricks itself isn't loaded.
87	*
88	* Bricks exposes `BRICKS_DB_PAGE_CONTENT` and renames the underlying key
89	* between generations (it gained the `_2` suffix in 1.7.3), so the
90	* constant is authoritative and this literal is only the fallback for the
91	* contexts where it is undefined — Bricks is a theme, so on an admin or
92	* CLI request against a site that has since switched themes the constant
93	* is simply not there while the post meta still is.
94	*
95	* Bricks stores three areas — header, content and footer. Only the content
96	* area belongs to the post being scored; the header and footer areas live
97	* on Bricks' own template posts and would double-count site chrome into
98	* every page's word count, so they are deliberately not read here.
99	*
100	* @since 2.2.1
101	* @var string
102	*/
103	private const BRICKS_CONTENT_META_KEY = '_bricks_page_content_2';
104
105	/**
106	* Bricks' per-post editor-mode meta key, used when Bricks isn't loaded.
107	*
108	* @since 2.2.1
109	* @var string
110	*/
111	private const BRICKS_EDITOR_MODE_META_KEY = '_bricks_editor_mode';
112
113	/**
114	* Bricks' components option, used when Bricks itself isn't loaded.
115	*
116	* @since 2.2.1
117	* @var string
118	*/
119	private const BRICKS_COMPONENTS_OPTION = 'bricks_components';
120
121	/**
122	* Bricks' element that renders the post's own `post_content`.
123	*
124	* A Bricks page normally discards `post_content` entirely, which is why
125	* anything left there is invisible. Dropping this element onto the canvas
126	* is the one way an author puts it back on the page, so its presence flips
127	* `post_content` from stale leftovers to content the visitor reads.
128	*
129	* @since 2.3.1
130	* @var string
131	*/
132	private const BRICKS_POST_CONTENT_ELEMENT = 'post-content';
133
134	/**
135	* Resolved Bricks trees for this request, keyed by post ID.
136	*
137	* Rendering one page asks for the tree about twenty times — every
138	* description, every schema node, the FAQ guard — and resolving it is not
139	* free. `bricks_content_source()` clears `Bricks\Database::$active_templates`
140	* before asking Bricks which content template applies, which defeats
141	* Bricks' own early-return and re-runs its whole template-condition engine;
142	* `expand_bricks_components()` then walks the tree again. Measured on a
143	* Bricks page with no content of its own, that was ten full runs of the
144	* rules engine per request.
145	*
146	* Per-request only, and only ever read back within one page render — a
147	* request that writes Bricks content does not also render it.
148	*
149	* @since 2.3.1
150	* @var array<int,array<int,mixed>>
151	*/
152	private static array $bricks_trees = [];
153
154	/**
155	* JSON keys whose values are user-visible text.
156	*
157	* Builder trees mix content with configuration, so a blind string sweep
158	* would count CSS classes and option slugs as words. Matching on the key
159	* keeps the word count honest.
160	*
161	* @var string[]
162	*/
163	private const CONTENT_KEYS = [
164	'text', 'title', 'subtitle', 'heading', 'subheading', 'content',
165	'description', 'caption', 'excerpt', 'label', 'value', 'html',
166	'editor', 'quote', 'answer', 'question', 'body', 'button_text',
167	// Oxygen classic keeps an element's copy in `options.ct_content`
168	// (headline, text block, rich text, link and button labels). It is the
169	// field Oxygen's own serializer moves between the tags when it writes
170	// shortcodes (`parse_components_tree()`), and the one Relevanssi and
171	// Oxygen's WPML integration read. Missing from this list, the walker
172	// kept only copy that happened to contain markup: a page of plain
173	// headings and paragraphs lost almost all of its words.
174	'ct_content',
175	// Oxygen's composite elements keep their copy under `options.original`
176	// instead, one key per field. Taken from the list Oxygen itself treats
177	// as text when it serializes (`$options_to_encode`); the numeric price
178	// fields and the progress bar's right-hand percentage are left out.
179	'testimonial_text', 'testimonial_author', 'testimonial_author_info',
180	'icon_box_heading', 'icon_box_text',
181	'pricing_box_package_title', 'pricing_box_package_subtitle', 'pricing_box_content',
182	'progress_bar_left_text',
183	];
184
185	/**
186	* Oxygen classic's storage generations, as JSON key => shortcode key.
187	*
188	* @since 2.10.0
189	* @var array<string,string>
190	*/
191	private const OXYGEN_CLASSIC_KEYS = [
192	'_ct_builder_json' => '_ct_builder_shortcodes',
193	'ct_builder_json' => 'ct_builder_shortcodes',
194	];
195
196	/**
197	* JSON keys whose values hold a link destination.
198	*
199	* Builders store a link's destination in a structured field separate from
200	* its label, either as a bare URL string or as a `{ url: … }` object.
201	* Neither shape survives a text sweep — the key is not content and a bare
202	* URL contains no `<` — so no `<a>` tag reached the link counters.
203	*
204	* @var string[]
205	*/
206	private const URL_KEYS = [
207	'link', 'url', 'href', 'link_url', 'button_link', 'permalink', 'link_to',
208	];
209
210	/**
211	* JSON keys whose values hold an embedded video's source.
212	*
213	* A builder's video widget keeps its destination in a provider-specific
214	* field — Elementor picks `youtube_url`, `vimeo_url`, `dailymotion_url` or
215	* `hosted_url` according to the chosen source type — none of which is a
216	* link field or a content field, so a video on a builder page reached the
217	* analyzers as nothing at all.
218	*
219	* These are deliberately kept out of URL_KEYS. A video is an embed, not an
220	* outbound link: rendering one as `<a href>` would add a spurious external
221	* link to every page carrying a video and skew the link counts. They are
222	* reconstructed as `<iframe>`/`<video>` instead, which the video detector
223	* recognises and the link and image counters ignore.
224	*
225	* @since 2.3.1
226	* @var string[]
227	*/
228	private const VIDEO_KEYS = [
229	'youtube_url', 'vimeo_url', 'dailymotion_url', 'videopress_url',
230	'hosted_url', 'video_url', 'video_src', 'video_link',
231	];
232
233	/**
234	* File extensions that mean a video source is a file, not a provider page.
235	*
236	* @since 2.3.1
237	* @var string[]
238	*/
239	private const VIDEO_FILE_EXTENSIONS = ['mp4', 'webm', 'ogv', 'mov', 'm4v'];
240
241	/**
242	* Source keys to trust for a declared video source type.
243	*
244	* A widget keeps one field per provider and does not clear the others when
245	* the author switches source: an Elementor video moved from YouTube to Self
246	* Hosted still carries the earlier `youtube_url`. Reading whichever key
247	* turns up first then emits the video the author replaced. The widget says
248	* which one it is actually playing, so that is read first and the flat key
249	* sweep is only the fallback for a builder that declares nothing.
250	*
251	* @since 2.3.1
252	* @var array<string,string[]>
253	*/
254	private const VIDEO_KEYS_BY_TYPE = [
255	'youtube' => ['youtube_url'],
256	'vimeo' => ['vimeo_url'],
257	'dailymotion' => ['dailymotion_url'],
258	'videopress' => ['videopress_url'],
259	'hosted' => ['hosted_url', 'video_url', 'video_src', 'video_link'],
260	'media' => ['hosted_url', 'video_url', 'video_src', 'video_link'],
261	'file' => ['hosted_url', 'video_url', 'video_src', 'video_link'],
262	'self_hosted' => ['hosted_url', 'video_url', 'video_src', 'video_link'],
263	];
264
265	/**
266	* Keys a builder uses to name which video source a widget is playing.
267	*
268	* @since 2.3.1
269	* @var string[]
270	*/
271	private const VIDEO_TYPE_KEYS = ['video_type', 'videotype', 'video_source', 'source_type'];
272
273	/**
274	* JSON keys whose values hold an image, as a URL string or `{ url, alt }`.
275	*
276	* @var string[]
277	*/
278	private const IMAGE_KEYS = [
279	'image', 'src', 'image_url', 'background_image', 'bg_image', 'photo',
280	];
281
282	/**
283	* JSON keys that carry a heading level for the node's text.
284	*
285	* A builder heading's text is collected (its key is in CONTENT_KEYS) and so
286	* counts toward the word count, but it arrives as bare text with no `<h2>`
287	* wrapper — which is why heading-structure checks saw none.
288	*
289	* @var string[]
290	*/
291	private const HEADING_TAG_KEYS = [
292	// Lower-cased on both sides of the comparison, so `headingtag` is the
293	// camelCase `headingTag` Bricks uses throughout its own controls and
294	// which ThinkRank's Bricks elements declare. Without it their section
295	// headings counted as body copy and never reached heading structure.
296	'header_size', 'heading_tag', 'headingtag', 'html_tag', 'title_tag', 'tag', 'level', 'size',
297	];
298
299	/**
300	* Keys whose value is alternative text for a sibling image.
301	*
302	* @var string[]
303	*/
304	private const ALT_KEYS = ['alt', 'alt_text', 'image_alt', 'title'];
305
306	/**
307	* Resolve the content worth analyzing for a post.
308	*
309	* @param \WP_Post $post Post being analyzed.
310	* @return string HTML/text to analyze.
311	*/
312	public static function resolve(\WP_Post $post): string {
313	$raw = (string) $post->post_content;
314
315	// A page built in Gutenberg and then switched to Bricks keeps its old
316	// blocks in `post_content` forever — Bricks never clears them, and
317	// never renders them either. Resolving that first meant the stale draft
318	// beat the tree the visitor actually reads, and it did not stop at the
319	// score: the same string becomes the meta description, og:description,
320	// twitter:description and the schema description. Starting from nothing
321	// sends the resolution straight to Bricks' storage, which is where this
322	// page's words are (#651).
323	//
324	// Only for the stored path. `resolve_markup()` is also called with live
325	// editor content, and the Bricks panel's resolver reads the canvas —
326	// discarding that would replace what the author is typing with the last
327	// save.
328	if (self::bricks_supersedes_post_content((int) $post->ID)) {
329	$raw = '';
330	}
331
332	return self::resolve_markup($raw, $post);
333	}
334
335	/**
336	* Whether Bricks renders this post and throws its `post_content` away.
337	*
338	* True means anything still stored in `post_content` is invisible: it is
339	* not on the page, so it must not be scored, described or published as
340	* structured data. False covers both a post Bricks does not own and a
341	* Bricks page that puts `post_content` back with a Post Content element.
342	*
343	* @since 2.3.1
344	*
345	* @param int $post_id Post being resolved.
346	* @return bool
347	*/
348	public static function bricks_supersedes_post_content(int $post_id): bool {
349	$tree = self::bricks_tree($post_id);
350
351	if (empty($tree)) {
352	return false;
353	}
354
355	foreach ($tree as $element) {
356	if (is_array($element)
357	&& self::BRICKS_POST_CONTENT_ELEMENT === ($element['name'] ?? null)
358	) {
359	return false;
360	}
361	}
362
363	return !self::bricks_tree_prints_post_content($tree);
364	}
365
366	/**
367	* Whether a Bricks tree prints the body through a dynamic-data tag.
368	*
369	* The Post Content element is not the only way back onto the page: Bricks'
370	* `{post_content}` tag renders the same thing from inside an ordinary text
371	* element, and a single-post template written that way is a common shape.
372	* Missing it would mean the post's real body is discarded everywhere —
373	* scoring, the meta/og/twitter descriptions, the schema description — for a
374	* page that is displaying it.
375	*
376	* Matched over the encoded tree rather than per setting, because the tag can
377	* sit in any string field of any element and Bricks allows modifiers after
378	* the name (`{post_content:...}`).
379	*
380	* @since 2.3.1
381	*
382	* @param array $tree Bricks element tree.
383	* @return bool
384	*/
385	private static function bricks_tree_prints_post_content(array $tree): bool {
386	$encoded = wp_json_encode($tree);
387
388	return is_string($encoded) && false !== stripos($encoded, '{post_content');
389	}
390
391	/**
392	* The post's content as the visitor actually receives it.
393	*
394	* `post_content` for everything except a Bricks page that discards it, and
395	* there the Bricks tree's text. Descriptions are derived from a post's body
396	* in half a dozen places; every one of them wants this rather than the raw
397	* column (#651).
398	*
399	* @since 2.3.1
400	*
401	* @param \WP_Post $post Post being described.
402	* @return string
403	*/
404	public static function visible_content(\WP_Post $post): string {
405	$superseding = self::superseding_content($post);
406
407	return '' !== $superseding ? $superseding : (string) $post->post_content;
408	}
409
410	/**
411	* Replacement body text for a post whose `post_content` does not render.
412	*
413	* Empty for every ordinary post, which is what makes this safe to call from
414	* paths that already handle excerpts their own way: they keep that handling
415	* and only a Bricks page is diverted.
416	*
417	* @since 2.3.1
418	*
419	* @param \WP_Post $post Post being described.
420	* @return string Visible body text, or '' when `post_content` is fine.
421	*/
422	public static function superseding_content(\WP_Post $post): string {
423	if (!self::bricks_supersedes_post_content((int) $post->ID)) {
424	return '';
425	}
426
427	$bricks = self::from_bricks((int) $post->ID);
428
429	return self::is_blank($bricks) ? '' : $bricks;
430	}
431
432	/**
433	* Body text to derive a description from, when the usual source is wrong.
434	*
435	* A hand-written excerpt is the author's own summary and is correct however
436	* the page is built, so it yields '' here and the caller's normal
437	* `get_the_excerpt()` path keeps it. Only a Bricks page with no excerpt —
438	* where core would derive one from discarded `post_content` — gets diverted.
439	*
440	* @since 2.3.1
441	*
442	* @param \WP_Post $post Post being described.
443	* @return string Text to summarize, or '' to leave the caller's path alone.
444	*/
445	public static function superseding_excerpt_source(\WP_Post $post): string {
446	if ('' !== trim((string) $post->post_excerpt)) {
447	return '';
448	}
449
450	return self::superseding_content($post);
451	}
452
453	/**
454	* The Bricks element tree that renders for a post.
455	*
456	* Public because what Bricks puts on the page is not only a scoring
457	* question: the schema graph has to know whether a Bricks element already
458	* publishes the page's FAQ before adding one of its own (#649, #650).
459	*
460	* Flat, in Bricks' own storage shape — `expand_bricks_components()`
461	* appends component definitions to the same list rather than nesting them,
462	* so one `foreach` reaches every element.
463	*
464	* @since 2.3.1
465	*
466	* @param int $post_id Post being resolved.
467	* @return array<int,mixed> Elements, or [] when Bricks renders nothing here.
468	*/
469	/**
470	* The builder meta keys, for callers that need to inspect the raw storage
471	* rather than the text extracted from it.
472	*
473	* The SEO Analyzer reads these to answer "is there a ThinkRank FAQ element
474	* on this post?", which is a question about the stored tree, not about the
475	* words in it (#686).
476	*
477	* @since 2.7.0
478	* @return string[]
479	*/
480	public static function builder_meta_keys(): array {
481	return self::BUILDER_META_KEYS;
482	}
483
484	public static function bricks_tree(int $post_id): array {
485	if (array_key_exists($post_id, self::$bricks_trees)) {
486	return self::$bricks_trees[$post_id];
487	}
488
489	self::$bricks_trees[$post_id] = self::resolve_bricks_tree($post_id);
490
491	return self::$bricks_trees[$post_id];
492	}
493
494	/**
495	* Discard the resolved-tree memo. Test seam.
496	*
497	* @since 2.3.1
498	* @return void
499	*/
500	public static function flush_bricks_cache(): void {
501	self::$bricks_trees = [];
502	}
503
504	/**
505	* Read and resolve a post's Bricks tree, ignoring the memo.
506	*
507	* @since 2.3.1
508	*
509	* @param int $post_id Post being resolved.
510	* @return array<int,mixed>
511	*/
512	private static function resolve_bricks_tree(int $post_id): array {
513	if (!self::bricks_owns_post($post_id)) {
514	return [];
515	}
516
517	$source = self::bricks_content_source($post_id);
518	if (!$source) {
519	return [];
520	}
521
522	$stored = get_post_meta($source, self::bricks_meta_key(), true);
523
524	if (is_string($stored)) {
525	$stored = '' === trim($stored) ? null : json_decode($stored, true);
526	}
527
528	if (!is_array($stored) \|\| empty($stored)) {
529	return [];
530	}
531
532	return self::expand_bricks_components($stored);
533	}
534
535	/**
536	* Resolve an arbitrary chunk of editor markup for the given post.
537	*
538	* The editor sends its live content to the scorer so an author sees their
539	* unsaved edits reflected. On a builder page that live string is the raw
540	* builder markup — the block editor hands over Divi's
541	* `<!-- wp:divi/... -->` comments verbatim, because it cannot render
542	* blocks it has no client-side registration for. Analyzed as-is it reads
543	* as zero words, which is how a Divi page could show a correct saved score
544	* while the live Content Analysis panel next to it still said
545	* "No content".
546	*
547	* Running the live string through the same chain as stored content keeps
548	* both paths honest, and falling through to the post's builder storage
549	* covers builders (Oxygen) whose editor content is empty to begin with.
550	*
551	* @since 1.23.0
552	*
553	* @param string $raw Markup to analyze.
554	* @param \WP_Post $post Post the markup belongs to.
555	* @return string Content to analyze.
556	*/
557	public static function resolve_markup(string $raw, \WP_Post $post): string {
558	$content = self::render_post_content($raw);
559
560	// Block markup that renders to nothing usually means the builder that
561	// owns those blocks did not register them in this context — Divi 5
562	// loads its module library lazily per-request, so in CLI, REST, admin
563	// and block-editor requests do_blocks() yields an empty string while
564	// the words sit right there in the block attributes. Read them
565	// directly.
566	if (self::is_blank($content)) {
567	$from_blocks = self::from_block_attributes($raw);
568	if (!self::is_blank($from_blocks)) {
569	$content = $from_blocks;
570	}
571	}
572
573	// Only reach for builder storage when the markup yielded nothing — a
574	// classic post must never pay for this.
575	if (self::is_blank($content)) {
576	$builder = self::from_builder_meta((int) $post->ID);
577	if (!self::is_blank($builder)) {
578	$content = $builder;
579	}
580	}
581
582	// A resolution that collapsed to nothing is worse than the raw markup.
583	if (self::is_blank($content) && !self::is_blank($raw)) {
584	$content = $raw;
585	}
586
587	/**
588	* Filter the content ThinkRank analyzes for a post.
589	*
590	* Use this to teach ThinkRank about a builder it does not know, or to
591	* override extraction for one it does.
592	*
593	* @since 1.23.0
594	*
595	* @param string $content Resolved content.
596	* @param \WP_Post $post Post being analyzed.
597	* @param string $raw Markup this resolution started from.
598	*/
599	return (string) apply_filters('thinkrank_analyzable_content', $content, $post, $raw);
600	}
601
602	/**
603	* Render blocks and shortcodes found in post_content.
604	*
605	* Best-effort: a third-party block that fatals must not take the whole
606	* score down with it.
607	*
608	* @param string $raw Raw post content.
609	* @return string Rendered content.
610	*/
611	private static function render_post_content(string $raw): string {
612	if ('' === trim($raw)) {
613	return '';
614	}
615
616	$content = $raw;
617
618	try {
619	if (function_exists('has_blocks') && function_exists('do_blocks') && has_blocks($raw)) {
620	$content = do_blocks($raw);
621	}
622
623	// Block output can itself contain shortcodes, so this runs either way.
624	if (function_exists('do_shortcode') && strpos($content, '[') !== false) {
625	$content = do_shortcode($content);
626	}
627	} catch (\Throwable $e) {
628	return $raw;
629	}
630
631	return self::is_blank($content) ? $raw : $content;
632	}
633
634	/**
635	* Extract text from the attributes of parsed blocks.
636	*
637	* @param string $raw Raw post content containing block markup.
638	* @return string Collected text, or '' when nothing was found.
639	*/
640	private static function from_block_attributes(string $raw): string {
641	if (!function_exists('parse_blocks') \|\| !function_exists('has_blocks') \|\| !has_blocks($raw)) {
642	return '';
643	}
644
645	try {
646	$blocks = parse_blocks($raw);
647	} catch (\Throwable $e) {
648	return '';
649	}
650
651	$attrs = [];
652	$collect = static function (array $items) use (&$collect, &$attrs): void {
653	foreach ($items as $block) {
654	if (!empty($block['attrs']) && is_array($block['attrs'])) {
655	$attrs[] = $block['attrs'];
656	}
657	if (!empty($block['innerBlocks']) && is_array($block['innerBlocks'])) {
658	$collect($block['innerBlocks']);
659	}
660	}
661	};
662	$collect($blocks);
663
664	return empty($attrs) ? '' : self::text_from_tree($attrs);
665	}
666
667	/**
668	* Everything Bricks contributes to this post's analyzable content.
669	*
670	* Bricks is the only builder here that needs more than a meta key, on
671	* three counts:
672	*
673	* - It leaves its stored tree behind when a post is switched back to the
674	* block editor, so an editor-mode gate has to run first or ThinkRank
675	* scores markup the visitor never sees — the same failure
676	* `_fl_builder_draft` was ordered against in #449.
677	* - A post's content can live on ANOTHER post. Bricks' Templates feature
678	* assigns a content template by condition, and a page using one stores
679	* nothing of its own; reading only the page's meta scores it blank
680	* while the visitor reads a full page.
681	* - Its stored text carries dynamic-data tags and internal element names
682	* that never reach the rendered page.
683	*
684	* @since 2.2.1
685	*
686	* @param int $post_id Post being resolved.
687	* @return string Extracted text, or '' when Bricks has nothing for it.
688	*/
689	private static function from_bricks(int $post_id): string {
690	$tree = self::bricks_tree($post_id);
691
692	if (empty($tree)) {
693	return '';
694	}
695
696	return self::strip_bricks_dynamic_tags(
697	self::text_from_tree(self::without_bricks_element_labels($tree))
698	);
699	}
700
701	/**
702	* Whether Bricks — not the block editor — renders this post.
703	*
704	* Bricks writes `bricks` or `wordpress` into its editor-mode meta as the
705	* author toggles between the two, and never clears the content it stored
706	* for the other mode. Only the `wordpress` value is disqualifying: an
707	* absent value is the normal state for a post Bricks built and never
708	* toggled. This follows Bricks' own `Helpers::render_with_bricks()`, which
709	* bails on exactly that one value.
710	*
711	* It deliberately does not match it exactly: the comparison here is
712	* case-insensitive, where Bricks' is strict. Bricks 2.3.12 only ever writes
713	* the value lowercase, so the two agree on everything Bricks itself
714	* stores; they part company only on a value some other integration wrote.
715	* The two shipping today disagree about the casing — SureRank compares
716	* against `'WordPress'`, AIOSEO against `'bricks'` — and of the two ways to
717	* be wrong about `'WordPress'`, blocking costs a score on a page that has
718	* one, while allowing scores stale content the visitor never sees, which is
719	* the failure this gate exists to prevent.
720	*
721	* @since 2.2.1
722	*
723	* @param int $post_id Post being resolved.
724	* @return bool
725	*/
726	private static function bricks_owns_post(int $post_id): bool {
727	$mode = get_post_meta($post_id, self::bricks_editor_mode_key(), true);
728
729	// phpcs:ignore WordPress.WP.CapitalPDangit.MisspelledInText -- Bricks' own stored meta value, lower-cased for the comparison.
730	return !(is_string($mode) && 'wordpress' === strtolower(trim($mode)));
731	}
732
733	/**
734	* The post whose Bricks tree actually renders for this post.
735	*
736	* Usually the post itself. When it stores nothing of its own, Bricks falls
737	* back to whichever content template's conditions match, and that template
738	* is a separate post carrying the words the visitor reads.
739	*
740	* Resolution is delegated to Bricks rather than reimplemented: template
741	* conditions are a whole rules engine (post IDs, types, taxonomies,
742	* archives), and a second implementation would drift from it. Bricks
743	* answers through statics, so they are saved and restored around the call —
744	* `set_active_templates()` returns early once populated, and on a
745	* front-end request Bricks has already populated it for the page being
746	* served. Clobbering that would corrupt the render in progress.
747	*
748	* Best-effort by design: any failure returns the post's own data, which is
749	* exactly today's behaviour.
750	*
751	* @since 2.2.1
752	*
753	* @param int $post_id Post being resolved.
754	* @return int Post ID holding the Bricks tree, or 0 when there is none.
755	*/
756	private static function bricks_content_source(int $post_id): int {
757	$own = get_post_meta($post_id, self::bricks_meta_key(), true);
758	if ((is_array($own) && !empty($own)) \|\| (is_string($own) && '' !== trim($own))) {
759	return $post_id;
760	}
761
762	if (!class_exists('\\Bricks\\Database')
763	\|\| !method_exists('\\Bricks\\Database', 'set_active_templates')
764	) {
765	return 0;
766	}
767
768	// `set_active_templates()` writes TWO statics — `$active_templates` and,
769	// when a header template resolves, `$header_position`. Both are saved,
770	// and both are restored in `finally` rather than on the happy path: a
771	// throw part-way through (a third-party hook on
772	// `bricks/database/content_type`, `bricks/builder/data_post_id` or
773	// `bricks/active_templates` is enough) must not leave Bricks' render
774	// state holding this lookup's values. Restoring only after a clean
775	// return is what the `catch` below would otherwise skip.
776	$has_header_position = property_exists('\\Bricks\\Database', 'header_position');
777	$saved_templates = \Bricks\Database::$active_templates;
778	$saved_header_position = $has_header_position ? \Bricks\Database::$header_position : null;
779
780	try {
781	\Bricks\Database::$active_templates = [];
782	\Bricks\Database::set_active_templates($post_id);
783	$template = (int) (\Bricks\Database::$active_templates['content'] ?? 0);
784	} catch (\Throwable $e) {
785	return 0;
786	} finally {
787	\Bricks\Database::$active_templates = $saved_templates;
788	if ($has_header_position) {
789	\Bricks\Database::$header_position = $saved_header_position;
790	}
791	}
792
793	// A template that is the post itself adds nothing over the empty read
794	// above, and would otherwise recurse conceptually.
795	return $template === $post_id ? 0 : $template;
796	}
797
798	/**
799	* Splice component definitions into the tree.
800	*
801	* A Bricks component keeps its markup in the `bricks_components` option,
802	* not on the page. The page stores only an instance: an element carrying
803	* `cid` and, usually, empty `settings`. Walking the page alone therefore
804	* found no words at all, and a page built entirely from components scored
805	* blank — the same failure as a page built from a content template.
806	*
807	* Confirmed on Bricks 2.3.12: `Bricks\Frontend::render_data()` renders the
808	* component's copy from an instance this walker extracted '' from.
809	*
810	* The definition is read straight from the option rather than through
811	* `Bricks\Helpers::get_component_instance()`. That helper resolves an
812	* instance's property overrides, which would be better, but it reads
813	* `Bricks\Database::$global_data['components']` — populated once per
814	* request, and empty in the admin and CLI contexts where bulk scoring
815	* runs. Refreshing it would mean writing to Bricks' live render state, the
816	* same hazard the template resolver is careful to avoid, and gating on it
817	* would make a page score differently in wp-admin than on the front end.
818	* Reading the stored definition is consistent everywhere.
819	*
820	* The trade-off: an instance that overrides a component property is scored
821	* with the component's authored copy rather than the override. That is the
822	* text the component renders by default, and it is much closer than the
823	* nothing this returned before.
824	*
825	* @since 2.2.1
826	*
827	* @param array $tree Bricks content area.
828	* @return array Tree with component elements spliced in after each instance.
829	*/
830	private static function expand_bricks_components(array $tree): array {
831	$expanded = [];
832	$open = [];
833
834	$walk = static function (array $elements, int $depth) use (&$walk, &$expanded, &$open): void {
835	foreach ($elements as $element) {
836	$expanded[] = $element;
837
838	if (!is_array($element) \|\| empty($element['cid']) \|\| !is_string($element['cid'])) {
839	continue;
840	}
841
842	$cid = $element['cid'];
843
844	// A component nested inside its own definition would recurse
845	// forever; the depth cap covers deep but legitimate nesting.
846	if (isset($open[$cid]) \|\| $depth > 4) {
847	continue;
848	}
849
850	$children = self::bricks_component_elements($cid);
851	if (empty($children)) {
852	continue;
853	}
854
855	// Re-entrant per branch, not per page: the guard is released
856	// after the walk so a second instance further along the page
857	// still expands, rather than being mistaken for recursion.
858	//
859	// That does NOT double the word count — `text_from_tree()`
860	// ends in `array_unique()`, which collapses a repeated
861	// component's copy the same way it collapses a value repeated
862	// across responsive breakpoints. Expanding both instances is
863	// about not silently dropping the second one's structure.
864	$open[$cid] = true;
865	$walk($children, $depth + 1);
866	unset($open[$cid]);
867	}
868	};
869
870	$walk($tree, 0);
871
872	return $expanded;
873	}
874
875	/**
876	* The stored elements of one Bricks component.
877	*
878	* @since 2.2.1
879	*
880	* @param string $cid Component id held by an instance element.
881	* @return array Component elements, or [] when it cannot be resolved.
882	*/
883	private static function bricks_component_elements(string $cid): array {
884	$components = get_option(self::bricks_constant('BRICKS_DB_COMPONENTS', self::BRICKS_COMPONENTS_OPTION), []);
885
886	if (!is_array($components)) {
887	return [];
888	}
889
890	foreach ($components as $component) {
891	$component = self::as_children($component);
892	if (null === $component) {
893	continue;
894	}
895
896	if (isset($component['id']) && $component['id'] === $cid && !empty($component['elements'])) {
897	return is_array($component['elements']) ? $component['elements'] : [];
898	}
899	}
900
901	return [];
902	}
903
904	/**
905	* Drop each Bricks element's internal name before the tree is walked.
906	*
907	* A Bricks element carries an optional top-level `label` — the nickname an
908	* author types in the Structure panel to find it again ("Hero headline",
909	* "CTA row"). It is builder chrome and is never rendered, but `label` is in
910	* CONTENT_KEYS because it is real content for other builders' form fields,
911	* so it was being counted as page copy.
912	*
913	* Only the element's own `label` is removed. A `label` inside `settings`
914	* is a rendered field label and stays.
915	*
916	* @since 2.2.1
917	*
918	* @param array $tree Bricks content area.
919	* @return array Tree with element nicknames removed.
920	*/
921	private static function without_bricks_element_labels(array $tree): array {
922	foreach ($tree as $index => $element) {
923	if (is_array($element) && isset($element['id'], $element['label'])) {
924	unset($tree[$index]['label']);
925	}
926	}
927
928	return $tree;
929	}
930
931	/**
932	* Remove Bricks dynamic-data tags from extracted text.
933	*
934	* Bricks stores `{post_title}`, `{post_meta:price}`, `{echo:my_fn}` and the
935	* like verbatim and resolves them when it renders. Extraction reads the
936	* stored tree, so without this the placeholders were counted as words, and
937	* a heading whose text is `{post_title}` reported the literal token as its
938	* heading text.
939	*
940	* The pattern is deliberately narrower than Bricks' own
941	* (`/{([\wÀ-ÖØ-öø-ÿ\-\s\.\/:...]+)}/u`), which also matches braces
942	* containing spaces. Bricks only substitutes tags that resolve to a
943	* registered provider and leaves anything else on the page as literal text,
944	* so the broad pattern would delete prose the visitor can actually read.
945	* Matching only tag-shaped tokens keeps every real sentence and still
946	* removes every placeholder — the same trade-off SureRank makes.
947	*
948	* @since 2.2.1
949	*
950	* @param string $text Extracted text.
951	* @return string Text with placeholders removed.
952	*/
953	private static function strip_bricks_dynamic_tags(string $text): string {
954	$stripped = preg_replace('/\{[a-z0-9_][a-z0-9_:\-\.]*\}/i', '', $text);
955
956	if (null === $stripped) {
957	return $text;
958	}
959
960	// Collapse the runs of spaces a removed tag leaves mid-sentence,
961	// without touching the newlines that separate collected nodes.
962	$tidied = preg_replace('/[ \t]{2,}/', ' ', $stripped);
963
964	return null === $tidied ? $stripped : $tidied;
965	}
966
967	/**
968	* Bricks' content-area meta key, preferring Bricks' own constant.
969	*
970	* @since 2.2.1
971	*
972	* @return string
973	*/
974	private static function bricks_meta_key(): string {
975	return self::bricks_constant('BRICKS_DB_PAGE_CONTENT', self::BRICKS_CONTENT_META_KEY);
976	}
977
978	/**
979	* Bricks' editor-mode meta key, preferring Bricks' own constant.
980	*
981	* @since 2.2.1
982	*
983	* @return string
984	*/
985	private static function bricks_editor_mode_key(): string {
986	return self::bricks_constant('BRICKS_DB_EDITOR_MODE', self::BRICKS_EDITOR_MODE_META_KEY);
987	}
988
989	/**
990	* Read one of Bricks' key-name constants, falling back to the literal.
991	*
992	* @since 2.2.1
993	*
994	* @param string $name Constant name.
995	* @param string $fallback Key to use when the constant is unavailable.
996	* @return string
997	*/
998	private static function bricks_constant(string $name, string $fallback): string {
999	if (defined($name)) {
1000	$value = constant($name);
1001	if (is_string($value) && '' !== trim($value)) {
1002	return $value;
1003	}
1004	}
1005
1006	return $fallback;
1007	}
1008
1009	/**
1010	* Pull text out of whichever builder stored this post.
1011	*
1012	* @param int $post_id Post ID.
1013	* @return string Extracted text, or '' when no builder data was found.
1014	*/
1015	private static function from_builder_meta(int $post_id): string {
1016	// Bricks first: it is the only builder whose content can live on
1017	// another post, and the only one gated on an editor mode.
1018	$bricks = self::from_bricks($post_id);
1019	if (!self::is_blank($bricks)) {
1020	return $bricks;
1021	}
1022
1023	foreach (self::BUILDER_META_KEYS as $key) {
1024	if (self::is_oxygen_classic_key($key)) {
1025	// Resolved as a pair, once, at the first of its keys.
1026	if ('_ct_builder_json' !== $key) {
1027	continue;
1028	}
1029
1030	$oxygen = self::from_oxygen_classic($post_id);
1031	if (!self::is_blank($oxygen)) {
1032	return $oxygen;
1033	}
1034	continue;
1035	}
1036
1037	$stored = get_post_meta($post_id, $key, true);
1038
1039	if (is_string($stored) && '' !== trim($stored)) {
1040	$decoded = json_decode($stored, true);
1041
1042	// JSON node tree (Breakdance/Oxygen 6, Elementor).
1043	if (is_array($decoded)) {
1044	$text = self::text_from_tree($decoded);
1045	if (!self::is_blank($text)) {
1046	return $text;
1047	}
1048	continue;
1049	}
1050
1051	continue;
1052	}
1053
1054	// Some builders store an already-decoded tree — an array for most,
1055	// an array of objects for Beaver Builder (#449).
1056	$tree = self::as_children($stored);
1057	if (null !== $tree) {
1058	$text = self::text_from_tree($tree);
1059	if (!self::is_blank($text)) {
1060	return $text;
1061	}
1062	}
1063	}
1064
1065	return '';
1066	}
1067
1068	/**
1069	* Whether a meta key is one of Oxygen classic's storage keys.
1070	*
1071	* @since 2.10.0
1072	*
1073	* @param string $key Meta key.
1074	* @return bool
1075	*/
1076	private static function is_oxygen_classic_key(string $key): bool {
1077	return isset(self::OXYGEN_CLASSIC_KEYS[$key]) \|\| in_array($key, self::OXYGEN_CLASSIC_KEYS, true);
1078	}
1079
1080	/**
1081	* Text of an Oxygen classic page, from whichever stored form holds more.
1082	*
1083	* Oxygen 4.x keeps the same tree twice: as JSON, and as the shortcodes it
1084	* used before 4.0. The JSON is preferred because it carries copy the
1085	* shortcode form hides (a composite element's text is base64-encoded
1086	* inside `ct_options`, which is configuration and stripped). It is not
1087	* trusted blindly, though. Reading `ct_builder_json` first once meant a
1088	* key missing from CONTENT_KEYS silently threw the page away while the
1089	* shortcode copy sat unread next to it, because a non-empty JSON result
1090	* stopped the search. Comparing the two means the next such gap costs
1091	* nothing: the richer form wins.
1092	*
1093	* A generation is only read as a pair. The prefixed keys are what Oxygen
1094	* 4.8.3+ reads, so an unprefixed leftover next to them is stale.
1095	*
1096	* @since 2.10.0
1097	*
1098	* @param int $post_id Post ID.
1099	* @return string Extracted text, or '' when Oxygen classic stored nothing.
1100	*/
1101	private static function from_oxygen_classic(int $post_id): string {
1102	foreach (self::OXYGEN_CLASSIC_KEYS as $json_key => $shortcode_key) {
1103	$json = get_post_meta($post_id, $json_key, true);
1104	$shortcodes = get_post_meta($post_id, $shortcode_key, true);
1105
1106	$from_json = '';
1107	if (is_string($json) && '' !== trim($json)) {
1108	$decoded = json_decode($json, true);
1109	if (is_array($decoded)) {
1110	// `[oxygen data="..."]` is a dynamic-data placeholder
1111	// Oxygen fills at render time. The shortcode path drops it
1112	// with every other tag, so it goes here too or the two
1113	// forms would disagree on the same page.
1114	$from_json = (string) preg_replace(
1115	'/\[oxygen\b[^\]]*\]/i',
1116	' ',
1117	self::text_from_tree($decoded)
1118	);
1119	}
1120	}
1121
1122	$from_shortcodes = '';
1123	if (is_string($shortcodes) && strpos($shortcodes, '[') !== false) {
1124	$from_shortcodes = self::text_from_shortcodes($shortcodes);
1125	}
1126
1127	if (self::is_blank($from_json) && self::is_blank($from_shortcodes)) {
1128	continue;
1129	}
1130
1131	return self::visible_word_count($from_json) >= self::visible_word_count($from_shortcodes)
1132	? $from_json
1133	: $from_shortcodes;
1134	}
1135
1136	return '';
1137	}
1138
1139	/**
1140	* Rough count of the words a visitor would read in extracted text.
1141	*
1142	* Only used to compare two extractions of the same page, so it needs to
1143	* be consistent rather than locale-exact.
1144	*
1145	* @since 2.10.0
1146	*
1147	* @param string $text Extracted text or markup.
1148	* @return int
1149	*/
1150	private static function visible_word_count(string $text): int {
1151	$plain = trim((string) preg_replace('/\s+/u', ' ', wp_strip_all_tags($text)));
1152
1153	return '' === $plain ? 0 : count(explode(' ', $plain));
1154	}
1155
1156	/**
1157	* Shortcode attributes that carry copy a visitor reads.
1158	*
1159	* An allow-list, not a deny-list. Oxygen Classic tags carry far more
1160	* attributes than they do copy — `id`, `class`, `selector`, `url`,
1161	* `ct_options` and friends — and a deny-list silently admits every
1162	* attribute a future builder release invents, which is how markup ends up
1163	* being counted as prose.
1164	*
1165	* @var string[]
1166	*/
1167	private const SHORTCODE_TEXT_ATTRIBUTES = [
1168	'text',
1169	'content',
1170	'heading',
1171	'title',
1172	'subtitle',
1173	'label',
1174	'caption',
1175	'description',
1176	'alt',
1177	'button_text',
1178	'link_text',
1179	];
1180
1181	/**
1182	* Extract readable text from a shortcode tree, without rendering it.
1183	*
1184	* Oxygen Classic is the only builder whose storage is shortcodes rather
1185	* than JSON, and the previous implementation handed the string to
1186	* `do_shortcode()`. That silently depends on Oxygen having registered its
1187	* `ct_*` handlers in the current request — which it has on a front-end
1188	* view, and has not during bulk analysis, the post-list column, cron or
1189	* REST/MCP. With no handlers registered `do_shortcode()` returns its input
1190	* unchanged, so the raw shortcode source was scored as if it were the
1191	* page's prose: `[ct_section`, `id="section-1"` and the rest counted toward
1192	* the word count, while the actual copy sitting in `text="..."` attributes
1193	* was never counted at all (#776).
1194	*
1195	* `strip_shortcodes()` is no help either — it also only knows registered
1196	* shortcodes, so it leaves the same text untouched.
1197	*
1198	* Reading the stored tree directly is what every other builder here already
1199	* does, and it matches the class's stated design: no render engine, no
1200	* dependency on load order, safe during a bulk run.
1201	*
1202	* Parsing unconditionally, rather than rendering when Oxygen happens to be
1203	* loaded and parsing otherwise, is deliberate. It makes the extracted text
1204	* the same in every context, so the score in the editor matches the score
1205	* from a bulk run or from MCP. The old code produced whichever of the two
1206	* the request happened to allow, which is why the same post could report
1207	* two different word counts depending on how it was asked.
1208	*
1209	* The trade-off is that rendered output (resolved images, links, anything
1210	* Oxygen pulls in from a reusable part) is no longer reflected here. For
1211	* what this text feeds — word count, content scoring, meta-description
1212	* fallbacks and schema text — that markup was never the point, and counting
1213	* it only when the builder happened to be booted was the bug.
1214	*
1215	* @since 2.10.0
1216	*
1217	* @param string $stored Raw shortcode source.
1218	* @return string Extracted text.
1219	*/
1220	private static function text_from_shortcodes(string $stored): string {
1221	// Oxygen stores each element's settings as a JSON blob in `ct_options`.
1222	// It is configuration, never copy, and it contains braces and brackets
1223	// that would otherwise confuse the tag scan below, so it goes first.
1224	//
1225	// The blob is matched as a balanced JSON object, not as "up to the
1226	// next quote". Oxygen wraps it in single quotes but does not escape
1227	// an apostrophe inside it (`"nicename":"Bob's Plumbing"`), so the
1228	// quote-to-quote match stopped mid-value and the rest of the blob,
1229	// `s Plumbing"}'` and all, was left in the tag and leaked into the
1230	// text. Strings inside the object are skipped whole, so neither a quote
1231	// nor a brace inside a value can end the match early.
1232	$source = (string) preg_replace(
1233	'/\sct_options\s=\s\'(?<obj>\{(?:[^{}"]++\|"(?:[^"\\\\]\|\\\\.)+"\|(?&obj))+\})\'/s',
1234	'',
1235	$stored
1236	);
1237
1238	// Anything not shaped like Oxygen's JSON blob keeps the old,
1239	// quote-delimited strip.
1240	$source = (string) preg_replace(
1241	'/\sct_options\s=\s(["\']).*?\1/s',
1242	'',
1243	$source
1244	);
1245
1246	$attributes = implode('\|', array_map(
1247	static fn(string $name): string => preg_quote($name, '/'),
1248	self::SHORTCODE_TEXT_ATTRIBUTES
1249	));
1250
1251	// Replace each shortcode tag with whatever readable copy its attributes
1252	// carry. Text between tags is left exactly where it is, so the result
1253	// keeps the page's reading order rather than hoisting all the headings
1254	// to the front.
1255	// The attribute blob is matched quote-aware rather than as "anything up
1256	// to the first `]`". Oxygen copy contains brackets often enough to
1257	// matter — "Best tools [2026]", "[Updated] our policy" — and a naive
1258	// scan ends the tag inside the `text` attribute, dropping the copy
1259	// before the bracket and leaking the stray `"]` after it into the
1260	// prose. Which is this bug's own failure mode: the wrong text scored.
1261	//
1262	// A tag name must start with a letter or underscore. `[2026]` is not a
1263	// shortcode anyone can register, and scanning it as one dropped the
1264	// year out of "Best tools [2026]".
1265	$text = (string) preg_replace_callback(
1266	'/\[\/?[a-zA-Z_][a-zA-Z0-9_-]((?:[^\]"\']\|"[^"]"\|\'[^\']\'))\]/',
1267	static function (array $matches) use ($attributes): string {
1268	if ('' === trim($matches[1])) {
1269	return ' ';
1270	}
1271
1272	if (!preg_match_all(
1273	'/\b(' . $attributes . ')\s=\s(["\'])(.*?)\2/s',
1274	$matches[1],
1275	$found,
1276	PREG_SET_ORDER
1277	)) {
1278	return ' ';
1279	}
1280
1281	$parts = [];
1282	foreach ($found as $attribute) {
1283	$value = trim($attribute[3]);
1284
1285	// An attribute holding markup or a JSON fragment is
1286	// configuration that happens to share a name with a copy
1287	// field, not something a visitor reads.
1288	if ('' === $value \|\| preg_match('/^[\[{<]/', $value)) {
1289	continue;
1290	}
1291
1292	$parts[] = $value;
1293	}
1294
1295	return empty($parts) ? ' ' : ' ' . implode(' ', $parts) . ' ';
1296	},
1297	$source
1298	);
1299
1300	// Oxygen escapes square brackets in an element's copy before writing
1301	// it between the tags, so that "Best tools [2026]" cannot be mistaken
1302	// for a shortcode (`oxygen_vsb_filter_shortcode_content_encode()`).
1303	// Decoded only now, after the tag scan, for the same reason; left
1304	// encoded, the placeholders were scored as words of their own.
1305	$text = str_replace(
1306	['_OXY_OPENING_BRACKET_', '_OXY_CLOSING_BRACKET_'],
1307	['[', ']'],
1308	$text
1309	);
1310
1311	// Entities are stored encoded in attributes (&, ’), and would
1312	// otherwise be counted as words.
1313	$text = html_entity_decode($text, ENT_QUOTES \| ENT_HTML5, 'UTF-8');
1314
1315	return trim((string) preg_replace('/\s+/u', ' ', $text));
1316	}
1317
1318	/**
1319	* A node's children, whether it stores them as an array or an object.
1320	*
1321	* The walker used to return immediately on `!is_array($node)`, so an
1322	* object node was dropped along with its entire subtree — silently, as
1323	* `''`, which the caller reads as "this builder stored nothing" rather
1324	* than "this walker cannot read this shape".
1325	*
1326	* Beaver Builder stores `_fl_builder_data` as an array of stdClass nodes,
1327	* each with a stdClass `settings` object, so every node would have been
1328	* dropped and adding its meta key alone would have looked like it worked
1329	* and changed nothing. Not BB-specific: any builder storing objects hits
1330	* this, and that shape will come up again (#449).
1331	*
1332	* @since 2.1.0
1333	*
1334	* @param mixed $node Candidate node.
1335	* @return array<string\|int,mixed>\|null Traversable children, or null.
1336	*/
1337	private static function as_children($node): ?array {
1338	if (is_array($node)) {
1339	return $node;
1340	}
1341
1342	// Deliberately not is_object(): a builder can store a value object
1343	// (DateTime, a WP_Post) whose properties are not content, and
1344	// get_object_vars() on those yields noise. stdClass is what the
1345	// JSON/serialize round-trip produces, which is the shape we want.
1346	if ($node instanceof \stdClass) {
1347	return get_object_vars($node);
1348	}
1349
1350	return null;
1351	}
1352
1353	/**
1354	* Walk a builder node tree and collect the user-visible text.
1355	*
1356	* Values are joined with block-level markup so downstream heading, link and
1357	* image detection keeps working on the result.
1358	*
1359	* @param array $tree Decoded builder tree.
1360	* @return string Collected HTML.
1361	*/
1362	private static function text_from_tree(array $tree): string {
1363	$collected = [];
1364
1365	// Strings already represented inside reconstructed markup, so the plain
1366	// sweep below doesn't emit a link label or heading a second time and
1367	// double it in the word count.
1368	$consumed = [];
1369
1370	// Pass 1 — rebuild <a>, <img> and <hN> from node shape. This has to
1371	// happen per node rather than per leaf: a link's label and its
1372	// destination are separate sibling fields, so once the tree is
1373	// flattened to leaves the pairing is gone.
1374	$reconstruct = static function ($node) use (&$reconstruct, &$collected, &$consumed): void {
1375	$node = self::as_children($node);
1376	if (null === $node) {
1377	return;
1378	}
1379
1380	$markup = self::markup_for_node($node, $consumed);
1381	if ('' !== $markup) {
1382	$collected[] = $markup;
1383	}
1384
1385	foreach ($node as $child_key => $child) {
1386	// A `link` / `image` sub-object is a destination descriptor the
1387	// parent has already folded into its markup. Descending into it
1388	// would emit the same URL a second time as a bare link, and
1389	// would turn an image's own `url` field into a spurious <a>.
1390	if (is_string($child_key)
1391	&& (in_array(strtolower($child_key), self::URL_KEYS, true)
1392	\|\| in_array(strtolower($child_key), self::IMAGE_KEYS, true)
1393	\|\| in_array(strtolower($child_key), self::VIDEO_KEYS, true))
1394	) {
1395	continue;
1396	}
1397
1398	$reconstruct($child);
1399	}
1400	};
1401	$reconstruct($tree);
1402
1403	// Pass 2 — remaining visible text.
1404	$walk = static function ($node, $key = null) use (&$walk, &$collected, &$consumed): void {
1405	$children = self::as_children($node);
1406	if (null !== $children) {
1407	foreach ($children as $child_key => $child) {
1408	$walk($child, is_string($child_key) ? $child_key : $key);
1409	}
1410	return;
1411	}
1412
1413	if (!is_string($node) \|\| '' === trim($node)) {
1414	return;
1415	}
1416
1417	// Already inside a reconstructed tag.
1418	if (in_array($node, $consumed, true)) {
1419	return;
1420	}
1421
1422	$is_content_key = is_string($key)
1423	&& in_array(strtolower($key), self::CONTENT_KEYS, true);
1424
1425	// Markup is content wherever it appears; bare strings only count
1426	// when their key says they are content, so slugs and class names
1427	// stay out of the word count.
1428	if ($is_content_key \|\| strpos($node, '<') !== false) {
1429	$collected[] = $node;
1430	}
1431	};
1432
1433	$walk($tree);
1434
1435	if (empty($collected)) {
1436	return '';
1437	}
1438
1439	// De-duplicate: builder trees often repeat a value across responsive
1440	// breakpoints, which would otherwise multiply the word count.
1441	$collected = array_unique($collected);
1442
1443	return implode("\n", $collected);
1444	}
1445
1446	/**
1447	* The video source a node is actually playing, if any.
1448	*
1449	* @since 2.3.1
1450	*
1451	* @param array $node Builder node.
1452	* @return string Video source, or '' when the node carries none.
1453	*/
1454	private static function video_from(array $node): string {
1455	foreach ($node as $key => $value) {
1456	if (!is_string($key) \|\| !is_string($value)) {
1457	continue;
1458	}
1459
1460	if (!in_array(strtolower($key), self::VIDEO_TYPE_KEYS, true)) {
1461	continue;
1462	}
1463
1464	$keys = self::VIDEO_KEYS_BY_TYPE[strtolower(trim($value))] ?? null;
1465	if (null === $keys) {
1466	continue;
1467	}
1468
1469	// A recognised video_type settles it, including when that
1470	// provider's own field is empty. Falling through to the flat sweep
1471	// there handed back whichever sibling key happened to come first in
1472	// node order — the stale youtube_url left behind after switching
1473	// the widget to a hosted file, which is exactly what keying on the
1474	// declared type is meant to prevent.
1475	$declared = self::url_from($node, $keys);
1476
1477	return self::is_video_source($declared) ? $declared : '';
1478	}
1479
1480	$url = self::url_from($node, self::VIDEO_KEYS);
1481
1482	return self::is_video_source($url) ? $url : '';
1483	}
1484
1485	/**
1486	* Whether a value can be a video source.
1487	*
1488	* `looks_like_url()` also accepts `#anchor`, `mailto:` and `tel:`, which a
1489	* link node may legitimately hold but a video cannot: `<iframe src="#top">`
1490	* is not a video and would reach a video sitemap as one.
1491	*
1492	* @since 2.3.1
1493	*
1494	* @param string $url Candidate source.
1495	* @return bool
1496	*/
1497	private static function is_video_source(string $url): bool {
1498	return '' !== $url
1499	&& (1 === preg_match('#^(https?:)?//#i', $url) \|\| str_starts_with($url, '/'));
1500	}
1501
1502	/**
1503	* Whether a video source points at a file rather than a provider page.
1504	*
1505	* @since 2.3.1
1506	*
1507	* @param string $url Video source.
1508	* @return bool
1509	*/
1510	private static function is_video_file(string $url): bool {
1511	$path = (string) wp_parse_url($url, PHP_URL_PATH);
1512	$ext = strtolower((string) pathinfo($path, PATHINFO_EXTENSION));
1513
1514	return in_array($ext, self::VIDEO_FILE_EXTENSIONS, true);
1515	}
1516
1517	/**
1518	* Rebuild the HTML a single builder node represents, if any.
1519	*
1520	* Looks only at the node's own fields (plus one level of nesting, because
1521	* builders commonly wrap a destination as `{ url: … }`). Returns an empty
1522	* string for the vast majority of nodes, which are layout or configuration.
1523	*
1524	* Any leaf string folded into the returned markup is appended to $consumed
1525	* so the plain-text sweep doesn't count it twice.
1526	*
1527	* @param array $node Builder node.
1528	* @param array $consumed Collects strings represented in the returned markup.
1529	* @return string Reconstructed HTML, or '' when the node carries none.
1530	*/
1531	private static function markup_for_node(array $node, array &$consumed): string {
1532	$text = self::first_value($node, self::CONTENT_KEYS);
1533	$url = self::url_from($node, self::URL_KEYS);
1534	$image = self::image_from($node);
1535	$video = self::video_from($node);
1536	$tag = self::heading_tag_from($node);
1537
1538	$parts = [];
1539
1540	// Video: an embed shape rather than a link, so the video detector can
1541	// see it while the link counters do not mistake it for an outbound
1542	// link. A file source becomes <video src>, anything else an <iframe>,
1543	// matching how the builder itself renders the two cases.
1544	if ('' !== $video) {
1545	$parts[] = self::is_video_file($video)
1546	? sprintf('<video src="%s"></video>', esc_url_raw($video))
1547	: sprintf('<iframe src="%s"></iframe>', esc_url_raw($video));
1548	}
1549
1550	// Image: alt text matters as much as the tag, since alt checks run over
1551	// whatever this returns.
1552	if ('' !== $image['url']) {
1553	$alt = '' !== $image['alt'] ? $image['alt'] : (string) self::first_value($node, self::ALT_KEYS);
1554	if ('' !== $alt) {
1555	$consumed[] = $alt;
1556	}
1557	$parts[] = sprintf(
1558	'<img src="%s" alt="%s" />',
1559	esc_url_raw($image['url']),
1560	htmlspecialchars($alt, ENT_QUOTES)
1561	);
1562	}
1563
1564	if ('' !== $text) {
1565	$inner = $text;
1566
1567	if ('' !== $url) {
1568	$consumed[] = $text;
1569	$inner = sprintf('<a href="%s">%s</a>', esc_url_raw($url), $text);
1570	}
1571
1572	if ('' !== $tag) {
1573	$consumed[] = $text;
1574	$parts[] = sprintf('<%1$s>%2$s</%1$s>', $tag, $inner);
1575	} elseif ('' !== $url) {
1576	$parts[] = $inner;
1577	}
1578	} elseif ('' !== $url) {
1579	// A destination with no label still counts as a link for link
1580	// checks; the URL doubles as its anchor text.
1581	$parts[] = sprintf('<a href="%1$s">%1$s</a>', esc_url_raw($url));
1582	}
1583
1584	return implode("\n", $parts);
1585	}
1586
1587	/**
1588	* First non-empty scalar value under any of the given keys.
1589	*
1590	* @param array $node Builder node.
1591	* @param string[] $keys Candidate keys.
1592	* @return string Trimmed value, or '' when none match.
1593	*/
1594	private static function first_value(array $node, array $keys): string {
1595	foreach ($node as $key => $value) {
1596	if (!is_string($key) \|\| !is_string($value)) {
1597	continue;
1598	}
1599	if (in_array(strtolower($key), $keys, true) && '' !== trim($value)) {
1600	return trim($value);
1601	}
1602	}
1603
1604	return '';
1605	}
1606
1607	/**
1608	* Link destination held by a node, as a bare string or a `{ url: … }` object.
1609	*
1610	* @param array $node Builder node.
1611	* @param string[] $keys Candidate keys.
1612	* @return string URL, or '' when the node holds none.
1613	*/
1614	private static function url_from(array $node, array $keys): string {
1615	foreach ($node as $key => $value) {
1616	if (!is_string($key) \|\| !in_array(strtolower($key), $keys, true)) {
1617	continue;
1618	}
1619
1620	if (is_string($value) && self::looks_like_url($value)) {
1621	return trim($value);
1622	}
1623
1624	// Elementor and Breakdance both nest the destination one level down.
1625	$nested_values = self::as_children($value);
1626	if (null !== $nested_values) {
1627	foreach ($nested_values as $nested_key => $nested) {
1628	if (is_string($nested_key)
1629	&& in_array(strtolower($nested_key), ['url', 'href', 'permalink'], true)
1630	&& is_string($nested)
1631	&& self::looks_like_url($nested)
1632	) {
1633	return trim($nested);
1634	}
1635	}
1636	}
1637	}
1638
1639	return '';
1640	}
1641
1642	/**
1643	* Image URL and alt text held by a node.
1644	*
1645	* @param array $node Builder node.
1646	* @return array{url:string,alt:string}
1647	*/
1648	private static function image_from(array $node): array {
1649	foreach ($node as $key => $value) {
1650	if (!is_string($key) \|\| !in_array(strtolower($key), self::IMAGE_KEYS, true)) {
1651	continue;
1652	}
1653
1654	if (is_string($value) && self::looks_like_url($value)) {
1655	return ['url' => trim($value), 'alt' => ''];
1656	}
1657
1658	$nested_values = self::as_children($value);
1659	if (null !== $nested_values) {
1660	$url = '';
1661	$alt = '';
1662	foreach ($nested_values as $nested_key => $nested) {
1663	if (!is_string($nested_key) \|\| !is_string($nested)) {
1664	continue;
1665	}
1666	$nested_key = strtolower($nested_key);
1667	if ('' === $url && in_array($nested_key, ['url', 'src'], true) && self::looks_like_url($nested)) {
1668	$url = trim($nested);
1669	}
1670	if ('' === $alt && in_array($nested_key, self::ALT_KEYS, true)) {
1671	$alt = trim($nested);
1672	}
1673	}
1674	if ('' !== $url) {
1675	return ['url' => $url, 'alt' => $alt];
1676	}
1677	}
1678	}
1679
1680	return ['url' => '', 'alt' => ''];
1681	}
1682
1683	/**
1684	* Heading tag a node asks for, normalised to h1–h6.
1685	*
1686	* Accepts both the `h2` form and a bare level like `2`.
1687	*
1688	* @param array $node Builder node.
1689	* @return string Tag name, or '' when the node is not a heading.
1690	*/
1691	private static function heading_tag_from(array $node): string {
1692	foreach ($node as $key => $value) {
1693	if (!is_string($key) \|\| !in_array(strtolower($key), self::HEADING_TAG_KEYS, true)) {
1694	continue;
1695	}
1696
1697	if (is_string($value) && preg_match('/^h([1-6])$/i', trim($value), $m)) {
1698	return 'h' . $m[1];
1699	}
1700
1701	// A bare level only counts under a key that unambiguously means one;
1702	// `size` and `tag` carry values like "large" or "div" far more often.
1703	if (is_numeric($value)
1704	&& in_array(strtolower($key), ['level'], true)
1705	&& (int) $value >= 1 && (int) $value <= 6
1706	) {
1707	return 'h' . (int) $value;
1708	}
1709	}
1710
1711	return '';
1712	}
1713
1714	/**
1715	* Whether a string is plausibly a link or asset destination.
1716	*
1717	* Deliberately permissive about relative paths — builders store internal
1718	* links that way — but rejects the option slugs and CSS values that make up
1719	* most of a builder tree.
1720	*
1721	* @param string $value Candidate.
1722	* @return bool
1723	*/
1724	private static function looks_like_url(string $value): bool {
1725	$value = trim($value);
1726
1727	if ('' === $value \|\| strlen($value) > 2048) {
1728	return false;
1729	}
1730
1731	if (preg_match('#^(https?:)?//#i', $value) \|\| str_starts_with($value, '/')) {
1732	return true;
1733	}
1734
1735	// Protocol-ish destinations a link node can legitimately hold.
1736	return (bool) preg_match('#^(mailto:\|tel:\|\#)#i', $value);
1737	}
1738
1739	/**
1740	* Whether a value carries nothing worth analyzing.
1741	*
1742	* Readable text is the usual signal, but not the only one: a page can be
1743	* made entirely of media. A builder section holding just a gallery
1744	* reconstructs to `<img>` tags and one holding just a video widget to a
1745	* single `<iframe>` — both strip to an empty string, so a text-only test
1746	* discarded them here and the page fell through to the next builder key,
1747	* then to the raw markup, and finally reported as having no content at all.
1748	*
1749	* Comments are dropped before the tag test: the raw markup this class falls
1750	* back to on a builder page is unrendered block comments, which must stay
1751	* blank rather than be mistaken for reconstructed media.
1752	*
1753	* @param string $value Candidate content.
1754	* @return bool
1755	*/
1756	private static function is_blank(string $value): bool {
1757	if ('' !== trim(wp_strip_all_tags($value))) {
1758	return false;
1759	}
1760
1761	$without_comments = (string) preg_replace('~<!--.*?-->~s', '', $value);
1762
1763	return 1 !== preg_match('~<(?:a\|img\|iframe\|video\|source)\b~i', $without_comments);
1764	}
1765	}
1766