← All changes | class.jetpack-gutenberg.php +1941 -0 16.2-beta → 16.3 View file →

		@@ -1,0 +1,1941 @@
	1	+<?php //phpcs:ignore WordPress.Files.FileName.InvalidClassFileName
	2	+/**
	3	+ * Handles server-side registration and use of all blocks and plugins available in Jetpack for the block editor, aka Gutenberg.
	4	+ * Works in tandem with client-side block registration via `index.json`
	5	+ *
	6	+ * @package automattic/jetpack
	7	+ */
	8	+
	9	+use Automattic\Jetpack\Assets;
	10	+use Automattic\Jetpack\Assets\Shared_Stores_Assets;
	11	+use Automattic\Jetpack\Blocks;
	12	+use Automattic\Jetpack\Connection\Initial_State as Connection_Initial_State;
	13	+use Automattic\Jetpack\Connection\Manager as Connection_Manager;
	14	+use Automattic\Jetpack\Constants;
	15	+use Automattic\Jetpack\Current_Plan as Jetpack_Plan;
	16	+use Automattic\Jetpack\Modules;
	17	+use Automattic\Jetpack\My_Jetpack\Initializer as My_Jetpack_Initializer;
	18	+use Automattic\Jetpack\Status;
	19	+use Automattic\Jetpack\Status\Host;
	20	+
	21	+if ( ! defined( 'ABSPATH' ) ) {
	22	+ exit( 0 );
	23	+}
	24	+
	25	+// Required directly so the AI master-gate helper is available regardless of
	26	+// which loader pulled this class in.
	27	+require_once __DIR__ . '/_inc/lib/class-jetpack-ai-settings.php';
	28	+
	29	+/**
	30	+ * General Gutenberg editor specific functionality
	31	+ */
	32	+class Jetpack_Gutenberg {
	33	+
	34	+ /**
	35	+ * Only these extensions can be registered. Used to control availability of beta blocks.
	36	+ *
	37	+ * @var array|null Extensions allowed list or `null` if not initialized yet.
	38	+ * @see static::get_extensions()
	39	+ */
	40	+ private static $extensions = null;
	41	+
	42	+ /**
	43	+ * Keeps track of the reasons why a given extension is unavailable.
	44	+ *
	45	+ * @var array Extensions availability information
	46	+ */
	47	+ private static $availability = array();
	48	+
	49	+ /**
	50	+ * A cached array of the fully processed availability data. Keeps track of
	51	+ * reasons why an extension is unavailable or missing.
	52	+ *
	53	+ * @var array Extensions availability information.
	54	+ */
	55	+ private static $cached_availability = null;
	56	+
	57	+ /**
	58	+ * Site-specific features available.
	59	+ * Their calculation can be expensive and slow, so we're caching it for the request.
	60	+ *
	61	+ * @var array Site-specific features
	62	+ */
	63	+ private static $site_specific_features = array();
	64	+
	65	+ /**
	66	+ * List of deprecated blocks.
	67	+ *
	68	+ * @var array List of deprecated blocks.
	69	+ */
	70	+ private static $deprecated_blocks = array(
	71	+ 'jetpack/revue',
	72	+ );
	73	+
	74	+ /**
	75	+ * Display-only blocks whose registration PHP can be deferred until the block
	76	+ * actually appears on a front-end page.
	77	+ *
	78	+ * Every block listed here has been verified to be "pure": the callback it hooks
	79	+ * to `init` does nothing but call Blocks::jetpack_register_block() (plus trivial
	80	+ * connection/module guards). It registers exactly one block type named
	81	+ * `jetpack/<dir>` (matching its directory), and any front-end hooks it adds (asset
	82	+ * enqueues, wp_footer, filters, …) live inside its render callback, so they only
	83	+ * run when the block is rendered.
	84	+ *
	85	+ * On plain front-end requests these blocks are NOT loaded on `init`. Instead they
	86	+ * are registered just-in-time the first time the block (or a block whose subtree
	87	+ * contains it) is encountered while rendering, via self::lazy_register_deferred_block()
	88	+ * on `pre_render_block`. On admin/REST/cron/CLI/XML-RPC (block-editor) requests they
	89	+ * keep loading eagerly so the editor, the block-types REST endpoint and server-side
	90	+ * rendering are unaffected.
	91	+ *
	92	+ * One class of front-end request is NOT safe to defer on: front-end block editors
	93	+ * (e.g. P2) render the inserter on a plain front-end page, so is_block_editor_context()
	94	+ * is false, yet the block must be registered at `init` for get_availability() to report
	95	+ * it as available. self::load_independent_blocks() therefore never defers a block that
	96	+ * ships in the `no-post-editor` preset (extensions/index.json) — those are exactly the
	97	+ * blocks available in editors other than the post editor. A block listed here that is
	98	+ * also in `no-post-editor` simply keeps loading eagerly.
	99	+ *
	100	+ * A block must NOT be added here if:
	101	+ * - its `init` callback registers any other hook, post meta, REST route,
	102	+ * shortcode, block pattern or hooked-block;
	103	+ * - it registers more than one block type, or a block name that differs from its
	104	+ * directory name (e.g. videopress registers `jetpack/videopress-block`); or
	105	+ * - it uses `plan_check` (its availability is computed from the init-time
	106	+ * `jetpack_register_gutenberg_extensions` hook, which lazy registration bypasses,
	107	+ * so the front-end availability nudge/render could read a stale value); or
	108	+ * - a front-end path reads its entry from get_cached_availability() before the
	109	+ * block renders. Deferred blocks appear unavailable there until the lazy
	110	+ * registration callback runs; or
	111	+ * - its block file can be `require`d by another runtime code path after `init`
	112	+ * (e.g. slideshow is included by modules/shortcodes/slideshow.php). The lazy
	113	+ * loader registers a block by running the `init` callback its include adds; if
	114	+ * the file was already included elsewhere, the include is a no-op and the
	115	+ * callback would never run, so the block would silently fail to register; or
	116	+ * - another runtime code path calls a function defined in its block file
	117	+ * (e.g. button defines Button\render_email(), called by subscriptions and
	118	+ * memberships for WooCommerce e-mail rendering). Deferring the file would leave
	119	+ * that function undefined when the dependent path runs; or
	120	+ * - it registers a `render_email_callback`. That callback is read off the
	121	+ * registered block type by the WooCommerce e-mail editor — an out-of-band
	122	+ * renderer that does not go through `pre_render_block`/`do_blocks` — so the block
	123	+ * must already be registered when an e-mail containing it is rendered, which can
	124	+ * happen on a front-end request (e.g. a transactional e-mail sent during checkout).
	125	+ *
	126	+ * When in doubt, leave it out: omitted blocks simply keep their current eager
	127	+ * behavior.
	128	+ *
	129	+ * @since 16.0
	130	+ * @var string[] Block feature names (directory names, without the `jetpack/` prefix).
	131	+ */
	132	+ private static $lazy_blocks = array(
	133	+ 'blog-stats',
	134	+ 'blogging-prompt',
	135	+ 'business-hours',
	136	+ 'eventbrite',
	137	+ 'gif',
	138	+ 'goodreads',
	139	+ 'google-calendar',
	140	+ 'google-docs-embed',
	141	+ 'image-compare',
	142	+ 'like',
	143	+ 'markdown',
	144	+ 'nextdoor',
	145	+ 'payments-intro',
	146	+ 'pinterest',
	147	+ 'related-posts',
	148	+ 'repeat-visitor',
	149	+ 'sharing-buttons',
	150	+ 'story',
	151	+ 'tock',
	152	+ 'top-posts',
	153	+ 'voice-to-content',
	154	+ );
	155	+
	156	+ /**
	157	+ * Blocks that were deferred on the current request and still need to be
	158	+ * registered just-in-time when first rendered. Keyed by block feature name.
	159	+ *
	160	+ * @since 16.0
	161	+ * @var array<string,bool>
	162	+ */
	163	+ private static $deferred_blocks = array();
	164	+
	165	+ /**
	166	+ * Fallback minimum plan requirements for WordPress.com/Atomic sites.
	167	+ *
	168	+ * Used when features have conditional availability (e.g., sticker-based gating)
	169	+ * and don't appear in features_data['available']. This only affects the upsell
	170	+ * message shown to users.
	171	+ *
	172	+ * @since 15.5
	173	+ * @var array Feature slug => minimum WordPress.com plan slug.
	174	+ */
	175	+ private static $wpcom_minimum_plan_fallbacks = array(
	176	+ 'donations' => 'value_bundle',
	177	+ 'payment-buttons' => 'value_bundle',
	178	+ 'paypal-payment-buttons' => 'value_bundle',
	179	+ );
	180	+
	181	+ /**
	182	+ * Storing the contents of the preset file.
	183	+ *
	184	+ * Already been json_decode.
	185	+ *
	186	+ * @var null|object JSON decoded object after first usage.
	187	+ */
	188	+ private static $preset_cache = null;
	189	+
	190	+ /**
	191	+ * Keep track of JS loading strategies for each block that needs it.
	192	+ *
	193	+ * @var array<string, array|bool>
	194	+ *
	195	+ * @since 15.0
	196	+ */
	197	+ private static $block_js_loading_strategies = array();
	198	+
	199	+ /**
	200	+ * Check to see if a minimum version of Gutenberg is available. Because a Gutenberg version is not available in
	201	+ * php if the Gutenberg plugin is not installed, if we know which minimum WP release has the required version we can
	202	+ * optionally fall back to that.
	203	+ *
	204	+ * @param array $version_requirements An array containing the required Gutenberg version and, if known, the WordPress version that was released with this minimum version.
	205	+ * @param string $slug The slug of the block or plugin that has the gutenberg version requirement.
	206	+ *
	207	+ * @since 8.3.0
	208	+ *
	209	+ * @return boolean True if the version of gutenberg required by the block or plugin is available.
	210	+ */
	211	+ public static function is_gutenberg_version_available( $version_requirements, $slug ) {
	212	+ global $wp_version;
	213	+
	214	+ // Bail if we don't at least have the gutenberg version requirement, the WP version is optional.
	215	+ if ( empty( $version_requirements['gutenberg'] ) ) {
	216	+ return false;
	217	+ }
	218	+
	219	+ // If running a local dev build of gutenberg plugin GUTENBERG_DEVELOPMENT_MODE is set so assume correct version.
	220	+ if ( defined( 'GUTENBERG_DEVELOPMENT_MODE' ) && GUTENBERG_DEVELOPMENT_MODE ) {
	221	+ return true;
	222	+ }
	223	+
	224	+ $version_available = false;
	225	+
	226	+ // If running a production build of the gutenberg plugin then GUTENBERG_VERSION is set, otherwise if WP version
	227	+ // with required version of Gutenberg is known check that.
	228	+ if ( defined( 'GUTENBERG_VERSION' ) ) {
	229	+ $version_available = version_compare( GUTENBERG_VERSION, $version_requirements['gutenberg'], '>=' );
	230	+ } elseif ( ! empty( $version_requirements['wp'] ) ) {
	231	+ $version_available = version_compare( $wp_version, $version_requirements['wp'], '>=' );
	232	+ }
	233	+
	234	+ if ( ! $version_available ) {
	235	+ $slug = self::remove_extension_prefix( $slug );
	236	+ self::set_extension_unavailable(
	237	+ $slug,
	238	+ 'incorrect_gutenberg_version',
	239	+ array(
	240	+ 'required_feature' => $slug,
	241	+ 'required_version' => $version_requirements,
	242	+ 'current_version' => array(
	243	+ 'wp' => $wp_version,
	244	+ 'gutenberg' => defined( 'GUTENBERG_VERSION' ) ? GUTENBERG_VERSION : null,
	245	+ ),
	246	+ )
	247	+ );
	248	+ }
	249	+
	250	+ return $version_available;
	251	+ }
	252	+
	253	+ /**
	254	+ * Prepend the 'jetpack/' prefix to a block name
	255	+ *
	256	+ * @param string $block_name The block name.
	257	+ *
	258	+ * @return string The prefixed block name.
	259	+ */
	260	+ private static function prepend_block_prefix( $block_name ) {
	261	+ return 'jetpack/' . $block_name;
	262	+ }
	263	+
	264	+ /**
	265	+ * Remove the 'jetpack/' or jetpack-' prefix from an extension name
	266	+ *
	267	+ * @param string $extension_name The extension name.
	268	+ *
	269	+ * @return string The unprefixed extension name.
	270	+ */
	271	+ public static function remove_extension_prefix( $extension_name ) {
	272	+ if ( str_starts_with( $extension_name, 'jetpack/' ) || str_starts_with( $extension_name, 'jetpack-' ) ) {
	273	+ return substr( $extension_name, strlen( 'jetpack/' ) );
	274	+ }
	275	+ return $extension_name;
	276	+ }
	277	+
	278	+ /**
	279	+ * Whether two arrays share at least one item
	280	+ *
	281	+ * @param array $a An array.
	282	+ * @param array $b Another array.
	283	+ *
	284	+ * @return boolean True if $a and $b share at least one item
	285	+ */
	286	+ protected static function share_items( $a, $b ) {
	287	+ return array_intersect( $a, $b ) !== array();
	288	+ }
	289	+
	290	+ /**
	291	+ * Set a (non-block) extension as available
	292	+ *
	293	+ * @param string $slug Slug of the extension.
	294	+ */
	295	+ public static function set_extension_available( $slug ) {
	296	+ $slug = self::remove_extension_prefix( $slug );
	297	+ self::$availability[ $slug ] = true;
	298	+ }
	299	+
	300	+ /**
	301	+ * Set the reason why an extension (block or plugin) is unavailable
	302	+ *
	303	+ * @param string $slug Slug of the extension.
	304	+ * @param string $reason A string representation of why the extension is unavailable.
	305	+ * @param array $details A free-form array containing more information on why the extension is unavailable.
	306	+ */
	307	+ public static function set_extension_unavailable( $slug, $reason, $details = array() ) {
	308	+ if (
	309	+ // Extensions that require a plan may be eligible for upgrades.
	310	+ 'missing_plan' === $reason
	311	+ && (
	312	+ /**
	313	+ * Filter 'jetpack_block_editor_enable_upgrade_nudge' with `true` to enable or `false`
	314	+ * to disable paid feature upgrade nudges in the block editor.
	315	+ *
	316	+ * When this is changed to default to `true`, you should also update `modules/memberships/class-jetpack-memberships.php`
	317	+ * See https://github.com/Automattic/jetpack/pull/13394#pullrequestreview-293063378
	318	+ *
	319	+ * @since 7.7.0
	320	+ *
	321	+ * @param boolean
	322	+ */
	323	+ ! apply_filters( 'jetpack_block_editor_enable_upgrade_nudge', false )
	324	+ /** This filter is documented in _inc/lib/admin-pages/class.jetpack-react-page.php */
	325	+ || ! apply_filters( 'jetpack_show_promotions', true )
	326	+ )
	327	+ ) {
	328	+ // The block editor may apply an upgrade nudge if `missing_plan` is the reason.
	329	+ // Add a descriptive suffix to disable behavior but provide informative reason.
	330	+ $reason .= '__nudge_disabled';
	331	+ }
	332	+ $slug = self::remove_extension_prefix( $slug );
	333	+ self::$availability[ $slug ] = array(
	334	+ 'reason' => $reason,
	335	+ 'details' => $details,
	336	+ );
	337	+ }
	338	+
	339	+ /**
	340	+ * Used to initialize the class, no longer in use.
	341	+ *
	342	+ * @return void
	343	+ * @deprecated 12.2 No longer needed.
	344	+ */
	345	+ public static function init() {
	346	+ _deprecated_function( __METHOD__, '12.2' );
	347	+ }
	348	+
	349	+ /**
	350	+ * Resets the class to its original state
	351	+ *
	352	+ * Used in unit tests
	353	+ *
	354	+ * @return void
	355	+ */
	356	+ public static function reset() {
	357	+ self::$extensions = null;
	358	+ self::$availability = array();
	359	+ self::$cached_availability = null;
	360	+ self::$block_js_loading_strategies = array();
	361	+ self::$deferred_blocks = array();
	362	+ }
	363	+
	364	+ /**
	365	+ * Return the Gutenberg extensions (blocks and plugins) directory
	366	+ *
	367	+ * @return string The Gutenberg extensions directory
	368	+ */
	369	+ public static function get_blocks_directory() {
	370	+ /**
	371	+ * Filter to select Gutenberg blocks directory
	372	+ *
	373	+ * @since 6.9.0
	374	+ *
	375	+ * @param string default: '_inc/blocks/'
	376	+ */
	377	+ return apply_filters( 'jetpack_blocks_directory', '_inc/blocks/' );
	378	+ }
	379	+
	380	+ /**
	381	+ * Checks for a given .json file in the blocks folder.
	382	+ *
	383	+ * @deprecated 14.3
	384	+ *
	385	+ * @param string $preset The name of the .json file to look for.
	386	+ *
	387	+ * @return bool True if the file is found.
	388	+ */
	389	+ public static function preset_exists( $preset ) {
	390	+ _deprecated_function( __METHOD__, '14.3' );
	391	+ return file_exists( JETPACK__PLUGIN_DIR . self::get_blocks_directory() . $preset . '.json' );
	392	+ }
	393	+
	394	+ /**
	395	+ * Decodes JSON loaded from the preset file in the blocks folder
	396	+ *
	397	+ * @since 14.3 Deprecated argument. Only one value is ever used.
	398	+ *
	399	+ * @param null $deprecated No longer used.
	400	+ *
	401	+ * @return mixed Returns an object if the file is present, or false if a valid .json file is not present.
	402	+ */
	403	+ public static function get_preset( $deprecated = null ) {
	404	+ if ( $deprecated ) {
	405	+ _deprecated_argument( __METHOD__, '14.3', 'The $preset argument is no longer needed or used.' );
	406	+ }
	407	+
	408	+ if ( self::$preset_cache ) {
	409	+ return self::$preset_cache;
	410	+ }
	411	+
	412	+ /*
	413	+ * The manifest is a build artifact and is absent in a source checkout (e.g. when
	414	+ * running the test suite). Return false — as documented — rather than calling
	415	+ * wp_json_file_decode() on a missing file, which triggers _doing_it_wrong().
	416	+ */
	417	+ $preset_file = JETPACK__PLUGIN_DIR . self::get_blocks_directory() . 'index.json';
	418	+ if ( ! file_exists( $preset_file ) ) {
	419	+ return false;
	420	+ }
	421	+
	422	+ self::$preset_cache = wp_json_file_decode( $preset_file );
	423	+ return self::$preset_cache;
	424	+ }
	425	+
	426	+ /**
	427	+ * Returns a list of Jetpack Gutenberg extensions (blocks and plugins), based on index.json
	428	+ *
	429	+ * @return array A list of blocks: eg [ 'publicize', 'markdown' ]
	430	+ */
	431	+ public static function get_jetpack_gutenberg_extensions_allowed_list() {
	432	+ $preset_extensions_manifest = ( defined( 'TESTING_IN_JETPACK' ) && TESTING_IN_JETPACK ) ? array() : self::get_preset();
	433	+ $blocks_variation = self::blocks_variation();
	434	+
	435	+ return self::get_extensions_preset_for_variation( $preset_extensions_manifest, $blocks_variation );
	436	+ }
	437	+
	438	+ /**
	439	+ * Returns a diff from a combined list of allowed extensions and extensions determined to be excluded
	440	+ *
	441	+ * @param array $allowed_extensions An array of allowed extensions.
	442	+ *
	443	+ * @return array A list of blocks: eg array( 'publicize', 'markdown' )
	444	+ */
	445	+ public static function get_available_extensions( $allowed_extensions = null ) {
	446	+ $exclusions = get_option( 'jetpack_excluded_extensions', array() );
	447	+ $allowed_extensions = $allowed_extensions === null ? self::get_jetpack_gutenberg_extensions_allowed_list() : $allowed_extensions;
	448	+
	449	+ // Avoid errors if option data is not as expected.
	450	+ if ( ! is_array( $exclusions ) ) {
	451	+ $exclusions = array();
	452	+ }
	453	+
	454	+ return array_diff( $allowed_extensions, $exclusions );
	455	+ }
	456	+
	457	+ /**
	458	+ * Return true if the extension has been registered and there's nothing in the availablilty array.
	459	+ *
	460	+ * @param string $extension The name of the extension.
	461	+ *
	462	+ * @return bool whether the extension has been registered and there's nothing in the availablilty array.
	463	+ */
	464	+ public static function is_registered_and_no_entry_in_availability( $extension ) {
	465	+ return self::is_registered( 'jetpack/' . $extension ) && ! isset( self::$availability[ $extension ] );
	466	+ }
	467	+
	468	+ /**
	469	+ * Return true if the extension has a true entry in the availablilty array.
	470	+ *
	471	+ * @param string $extension The name of the extension.
	472	+ *
	473	+ * @return bool whether the extension has a true entry in the availablilty array.
	474	+ */
	475	+ public static function is_available( $extension ) {
	476	+ return isset( self::$availability[ $extension ] ) && true === self::$availability[ $extension ];
	477	+ }
	478	+
	479	+ /**
	480	+ * Get the availability of each block / plugin, or return the cached availability
	481	+ * if it has already been calculated. Avoids re-registering extensions when not
	482	+ * necessary.
	483	+ *
	484	+ * @return array A list of block and plugins and their availability status.
	485	+ */
	486	+ public static function get_cached_availability() {
	487	+ if ( null === self::$cached_availability ) {
	488	+ self::$cached_availability = self::get_availability();
	489	+ }
	490	+ return self::$cached_availability;
	491	+ }
	492	+
	493	+ /**
	494	+ * Get availability of each block / plugin.
	495	+ *
	496	+ * @return array A list of block and plugins and their availablity status
	497	+ */
	498	+ public static function get_availability() {
	499	+ /**
	500	+ * Fires before Gutenberg extensions availability is computed.
	501	+ *
	502	+ * In the function call you supply, use `Blocks::jetpack_register_block()` to set a block as available.
	503	+ * Alternatively, use `Jetpack_Gutenberg::set_extension_available()` (for a non-block plugin), and
	504	+ * `Jetpack_Gutenberg::set_extension_unavailable()` (if the block or plugin should not be registered
	505	+ * but marked as unavailable).
	506	+ *
	507	+ * @since 7.0.0
	508	+ */
	509	+ do_action( 'jetpack_register_gutenberg_extensions' );
	510	+
	511	+ $available_extensions = array();
	512	+
	513	+ foreach ( static::get_extensions() as $extension ) {
	514	+ $is_available = self::is_registered_and_no_entry_in_availability( $extension ) || self::is_available( $extension );
	515	+ $available_extensions[ $extension ] = array(
	516	+ 'available' => $is_available,
	517	+ );
	518	+
	519	+ if ( ! $is_available ) {
	520	+ $reason = isset( self::$availability[ $extension ] ) ? self::$availability[ $extension ]['reason'] : 'missing_module';
	521	+ $details = isset( self::$availability[ $extension ] ) ? self::$availability[ $extension ]['details'] : array();
	522	+ $available_extensions[ $extension ]['unavailable_reason'] = $reason;
	523	+ $available_extensions[ $extension ]['details'] = $details;
	524	+ }
	525	+ }
	526	+
	527	+ return $available_extensions;
	528	+ }
	529	+
	530	+ /**
	531	+ * Return the list of extensions that are available.
	532	+ *
	533	+ * @since 11.9
	534	+ *
	535	+ * @return array A list of block and plugins and their availability status.
	536	+ */
	537	+ public static function get_extensions() {
	538	+ if ( ! static::should_load() ) {
	539	+ return array();
	540	+ }
	541	+
	542	+ if ( null === self::$extensions ) {
	543	+ /**
	544	+ * Filter the list of block editor extensions that are available through Jetpack.
	545	+ *
	546	+ * @since 7.0.0
	547	+ *
	548	+ * @param array
	549	+ */
	550	+ self::$extensions = apply_filters( 'jetpack_set_available_extensions', self::get_available_extensions() );
	551	+
	552	+ if ( ! is_array( self::$extensions ) ) {
	553	+ _doing_it_wrong( __METHOD__, esc_html__( 'The jetpack_set_available_extensions filter must return an array.', 'jetpack' ), '14.9' );
	554	+ self::$extensions = array();
	555	+ }
	556	+ }
	557	+
	558	+ return self::$extensions;
	559	+ }
	560	+
	561	+ /**
	562	+ * Check if an extension/block is already registered
	563	+ *
	564	+ * @since 7.2
	565	+ *
	566	+ * @param string $slug Name of extension/block to check.
	567	+ *
	568	+ * @return bool
	569	+ */
	570	+ public static function is_registered( $slug ) {
	571	+ return WP_Block_Type_Registry::get_instance()->is_registered( $slug );
	572	+ }
	573	+
	574	+ /**
	575	+ * Check if Gutenberg editor is available
	576	+ *
	577	+ * @since 6.7.0
	578	+ *
	579	+ * @return bool
	580	+ */
	581	+ public static function is_gutenberg_available() {
	582	+ return true;
	583	+ }
	584	+
	585	+ /**
	586	+ * Check whether conditions indicate Gutenberg Extensions (blocks and plugins) should be loaded
	587	+ *
	588	+ * Loading blocks and plugins is enabled by default and may be disabled via filter:
	589	+ * add_filter( 'jetpack_gutenberg', '__return_false' );
	590	+ *
	591	+ * @since 6.9.0
	592	+ *
	593	+ * @return bool
	594	+ */
	595	+ public static function should_load() {
	596	+ if ( ! Jetpack::is_connection_ready() && ! ( new Status() )->is_offline_mode() ) {
	597	+ return false;
	598	+ }
	599	+
	600	+ $return = true;
	601	+
	602	+ if ( ! ( new Modules() )->is_active( 'blocks' ) ) {
	603	+ $return = false;
	604	+ }
	605	+
	606	+ /**
	607	+ * Filter to enable Gutenberg blocks.
	608	+ *
	609	+ * Defaults to true if (connected or in offline mode) and the Blocks module is active.
	610	+ *
	611	+ * @since 6.5.0
	612	+ * @since 13.9 Filter is able to activate or deactivate Gutenberg blocks.
	613	+ *
	614	+ * @param bool true Whether to load Gutenberg blocks
	615	+ */
	616	+ return (bool) apply_filters( 'jetpack_gutenberg', $return );
	617	+ }
	618	+
	619	+ /**
	620	+ * Queue a script to set `Jetpack_Block_Assets_Base_Url`.
	621	+ *
	622	+ * In certain cases Webpack needs to know a base to load additional assets from.
	623	+ * Normally it can determine that itself, but when JS concatenation is involved that tends to confuse it.
	624	+ * We work around that by explicitly outputting a variable with the correct URL.
	625	+ * We set that as its own "script" so we can reliably only output it once.
	626	+ */
	627	+ private static function register_blocks_assets_base_url() {
	628	+ if ( ! wp_script_is( 'jetpack-blocks-assets-base-url', 'registered' ) ) {
	629	+ // phpcs:ignore WordPress.WP.EnqueuedResourceParameters.MissingVersion -- No actual script, so no version needed.
	630	+ wp_register_script( 'jetpack-blocks-assets-base-url', false, array(), null, array( 'in_footer' => false ) );
	631	+ $json_encode_flags = JSON_UNESCAPED_SLASHES | JSON_HEX_TAG | JSON_HEX_AMP;
	632	+ if ( get_option( 'blog_charset' ) === 'UTF-8' ) {
	633	+ $json_encode_flags |= JSON_UNESCAPED_UNICODE;
	634	+ }
	635	+ wp_add_inline_script(
	636	+ 'jetpack-blocks-assets-base-url',
	637	+ 'var Jetpack_Block_Assets_Base_Url=' . wp_json_encode( plugins_url( self::get_blocks_directory(), JETPACK__PLUGIN_FILE ), $json_encode_flags ) . ';',
	638	+ 'before'
	639	+ );
	640	+ }
	641	+ }
	642	+
	643	+ /**
	644	+ * Only enqueue block assets when needed.
	645	+ *
	646	+ * @param string $type Slug of the block or absolute path to the block source code directory.
	647	+ * @param array $script_dependencies Script dependencies. Will be merged with automatically
	648	+ * detected script dependencies from the webpack build.
	649	+ *
	650	+ * @return void
	651	+ */
	652	+ public static function load_assets_as_required( $type, $script_dependencies = array() ) {
	653	+ if ( is_admin() ) {
	654	+ // A block's view assets will not be required in wp-admin.
	655	+ return;
	656	+ }
	657	+
	658	+ // Retrieve the feature from block.json if a path is passed.
	659	+ if ( path_is_absolute( $type ) ) {
	660	+ $metadata = Blocks::get_block_metadata_from_file( Blocks::get_path_to_block_metadata( $type ) );
	661	+ $feature = Blocks::get_block_feature_from_metadata( $metadata );
	662	+
	663	+ if ( ! empty( $feature ) ) {
	664	+ $type = $feature;
	665	+ }
	666	+ }
	667	+
	668	+ $type = sanitize_title_with_dashes( $type );
	669	+ self::load_styles_as_required( $type );
	670	+ self::load_scripts_as_required( $type, $script_dependencies );
	671	+ }
	672	+
	673	+ /**
	674	+ * Only enqueue block sytles when needed.
	675	+ *
	676	+ * @param string $type Slug of the block.
	677	+ *
	678	+ * @since 7.2.0
	679	+ *
	680	+ * @return void
	681	+ */
	682	+ public static function load_styles_as_required( $type ) {
	683	+ if ( is_admin() ) {
	684	+ // A block's view assets will not be required in wp-admin.
	685	+ return;
	686	+ }
	687	+
	688	+ // Enqueue styles.
	689	+ $style_relative_path = self::get_blocks_directory() . $type . '/view' . ( is_rtl() ? '.rtl' : '' ) . '.css';
	690	+ if ( self::block_has_asset( $style_relative_path ) ) {
	691	+ $style_version = self::get_asset_version( $style_relative_path );
	692	+ $view_style = plugins_url( $style_relative_path, JETPACK__PLUGIN_FILE );
	693	+ $view_style = add_query_arg( 'minify', 'false', $view_style );
	694	+
	695	+ // If this is a customizer preview, render the style directly to the preview after autosave.
	696	+ // phpcs:ignore WordPress.Security.NonceVerification.Recommended
	697	+ if ( is_customize_preview() && ! empty( $_GET['customize_autosaved'] ) ) {
	698	+ // phpcs:ignore WordPress.WP.EnqueuedResources.NonEnqueuedStylesheet
	699	+ echo '<link rel="stylesheet" id="jetpack-block-' . esc_attr( $type ) . '" href="' . esc_attr( $view_style ) . '&amp;ver=' . esc_attr( $style_version ) . '" media="all">';
	700	+ } else {
	701	+ wp_enqueue_style( 'jetpack-block-' . $type, $view_style, array(), $style_version );
	702	+ wp_style_add_data( 'jetpack-block-' . $type, 'path', JETPACK__PLUGIN_DIR . $style_relative_path );
	703	+ }
	704	+ }
	705	+ }
	706	+
	707	+ /**
	708	+ * Only enqueue block scripts when needed.
	709	+ *
	710	+ * @param string $type Slug of the block.
	711	+ * @param array $script_dependencies Script dependencies. Will be merged with automatically
	712	+ * detected script dependencies from the webpack build.
	713	+ *
	714	+ * @since 7.2.0
	715	+ *
	716	+ * @return void
	717	+ */
	718	+ public static function load_scripts_as_required( $type, $script_dependencies = array() ) {
	719	+ if ( is_admin() ) {
	720	+ // A block's view assets will not be required in wp-admin.
	721	+ return;
	722	+ }
	723	+
	724	+ self::register_blocks_assets_base_url();
	725	+
	726	+ // Enqueue script.
	727	+ $script_relative_path = self::get_blocks_directory() . $type . '/view.js';
	728	+ $script_deps_path = JETPACK__PLUGIN_DIR . self::get_blocks_directory() . $type . '/view.asset.php';
	729	+ $script_dependencies[] = 'jetpack-blocks-assets-base-url';
	730	+ if ( file_exists( $script_deps_path ) ) {
	731	+ $asset_manifest = include $script_deps_path;
	732	+ $script_dependencies = array_unique( array_merge( $script_dependencies, $asset_manifest['dependencies'] ) );
	733	+ }
	734	+
	735	+ if ( ! Blocks::is_amp_request() && self::block_has_asset( $script_relative_path ) ) {
	736	+ $script_version = self::get_asset_version( $script_relative_path );
	737	+ $view_script = plugins_url( $script_relative_path, JETPACK__PLUGIN_FILE );
	738	+ $view_script = add_query_arg( 'minify', 'false', $view_script );
	739	+ $strategy = self::get_block_js_loading_strategy( $type );
	740	+
	741	+ // Enqueue dependencies.
	742	+ wp_enqueue_script( 'jetpack-block-' . $type, $view_script, $script_dependencies, $script_version, $strategy );
	743	+
	744	+ // If this is a customizer preview, enqueue the dependencies and render the script directly to the preview after autosave.
	745	+ // phpcs:ignore WordPress.Security.NonceVerification.Recommended
	746	+ if ( is_customize_preview() && ! empty( $_GET['customize_autosaved'] ) ) {
	747	+ // The Map block is dependent on wp-element, and it doesn't appear to to be possible to load
	748	+ // this dynamically into the customizer iframe currently.
	749	+ if ( 'map' === $type ) {
	750	+ echo '<div>' . esc_html__( 'No map preview available. Publish and refresh to see this widget.', 'jetpack' ) . '</div>';
	751	+ echo '<script>';
	752	+ echo 'Array.from(document.getElementsByClassName(\'wp-block-jetpack-map\')).forEach(function(element){element.style.display = \'none\';})';
	753	+ echo '</script>';
	754	+ } else {
	755	+ echo '<script id="jetpack-block-' . esc_attr( $type ) . '" src="' . esc_attr( $view_script ) . '&amp;ver=' . esc_attr( $script_version ) . '"></script>';
	756	+ }
	757	+ }
	758	+ }
	759	+ }
	760	+
	761	+ /**
	762	+ * Check if an asset exists for a block.
	763	+ *
	764	+ * @param string $file Path of the file we are looking for.
	765	+ *
	766	+ * @return bool $block_has_asset Does the file exist.
	767	+ */
	768	+ public static function block_has_asset( $file ) {
	769	+ return file_exists( JETPACK__PLUGIN_DIR . $file );
	770	+ }
	771	+
	772	+ /**
	773	+ * Get the version number to use when loading the file. Allows us to bypass cache when developing.
	774	+ *
	775	+ * @param string $file Path of the file we are looking for.
	776	+ *
	777	+ * @return string $script_version Version number.
	778	+ */
	779	+ public static function get_asset_version( $file ) {
	780	+ return Jetpack::is_development_version() && self::block_has_asset( $file )
	781	+ ? filemtime( JETPACK__PLUGIN_DIR . $file )
	782	+ : JETPACK__VERSION;
	783	+ }
	784	+
	785	+ /**
	786	+ * Load Gutenberg editor assets
	787	+ *
	788	+ * @since 6.7.0
	789	+ *
	790	+ * @return void
	791	+ */
	792	+ public static function enqueue_block_editor_assets() {
	793	+ if ( ! self::should_load() ) {
	794	+ return;
	795	+ }
	796	+
	797	+ /*
	798	+ * When the user returns to the editor right after a successful plan
	799	+ * purchase (signalled by the `plan_upgraded` redirect argument), refresh
	800	+ * the locally cached plan from WordPress.com before block availability is
	801	+ * computed below. Otherwise `available_blocks` is derived from the stale
	802	+ * `jetpack_active_plan` option (only refreshed by the daily heartbeat) and
	803	+ * paid blocks keep showing their upgrade nudge even though the plan is now
	804	+ * active. Simple sites gate features live via `wpcom_site_has_feature()`,
	805	+ * so they neither need nor benefit from this.
	806	+ *
	807	+ * The refresh is a blocking WordPress.com request, so it is guarded to run
	808	+ * only on a connected, non-WPCOM site, throttled to once per minute (a
	809	+ * repeated or bookmarked `?plan_upgraded` URL cannot trigger a request on
	810	+ * every load), and time-boxed so a slow origin cannot hang the editor. The
	811	+ * client-side reload fallback covers a skipped or failed refresh. The value
	812	+ * is only used to trigger a cache refresh from an authoritative source, so
	813	+ * no nonce is required. See FORMS-712.
	814	+ */
	815	+ if (
	816	+ ! empty( $_GET['plan_upgraded'] ) // phpcs:ignore WordPress.Security.NonceVerification.Recommended
	817	+ && ! ( defined( 'IS_WPCOM' ) && IS_WPCOM )
	818	+ && Jetpack::is_connection_ready()
	819	+ && ! get_transient( 'jetpack_plan_upgraded_refresh' )
	820	+ ) {
	821	+ set_transient( 'jetpack_plan_upgraded_refresh', 1, MINUTE_IN_SECONDS );
	822	+
	823	+ $cap_plan_refresh_timeout = static function () {
	824	+ return 5;
	825	+ };
	826	+ add_filter( 'http_request_timeout', $cap_plan_refresh_timeout, PHP_INT_MAX );
	827	+ Jetpack_Plan::refresh_from_wpcom();
	828	+ remove_filter( 'http_request_timeout', $cap_plan_refresh_timeout, PHP_INT_MAX );
	829	+ }
	830	+
	831	+ $status = new Status();
	832	+
	833	+ // Required for Analytics. See _inc/lib/admin-pages/class.jetpack-admin-page.php.
	834	+ if ( ! $status->is_offline_mode() && Jetpack::is_connection_ready() ) {
	835	+ wp_enqueue_script( 'jp-tracks', '//stats.wp.com/w.js', array(), gmdate( 'YW' ), true );
	836	+ }
	837	+
	838	+ $blocks_dir = self::get_blocks_directory();
	839	+ $blocks_variation = self::blocks_variation();
	840	+
	841	+ if ( 'production' !== $blocks_variation ) {
	842	+ $blocks_env = '-' . esc_attr( $blocks_variation );
	843	+ } else {
	844	+ $blocks_env = '';
	845	+ }
	846	+
	847	+ self::register_blocks_assets_base_url();
	848	+
	849	+ Assets::register_script(
	850	+ 'jetpack-blocks-editor',
	851	+ "{$blocks_dir}editor{$blocks_env}.js",
	852	+ JETPACK__PLUGIN_FILE,
	853	+ array(
	854	+ 'textdomain' => 'jetpack',
	855	+ 'dependencies' => array( 'jetpack-blocks-assets-base-url' ),
	856	+ )
	857	+ );
	858	+
	859	+ /**
	860	+ * This can be called multiple times per page load in the admin, during the `enqueue_block_assets` action.
	861	+ * These assets are necessary for the admin for editing but are not necessary for each pattern preview.
	862	+ * Therefore we dequeue them, so they don't load for each pattern preview iframe.
	863	+ */
	864	+ if ( ! wp_should_load_block_editor_scripts_and_styles() ) {
	865	+ wp_dequeue_script( 'jp-tracks' );
	866	+ wp_dequeue_script( 'jetpack-blocks-editor' );
	867	+
	868	+ return;
	869	+ }
	870	+
	871	+ // Hack around #20357 (specifically, that the editor bundle depends on
	872	+ // wp-edit-post but wp-edit-post's styles break the Widget Editor and
	873	+ // Site Editor) until a real fix gets unblocked.
	874	+ // @todo Remove this once #20357 is properly fixed.
	875	+ $wp_styles_fix = wp_styles()->query( 'jetpack-blocks-editor', 'registered' );
	876	+ if ( empty( $wp_styles_fix ) ) {
	877	+ wp_die( 'Your installation of Jetpack is incomplete. Please run "jetpack build plugins/jetpack" in your dev env.' );
	878	+ }
	879	+ wp_styles()->query( 'jetpack-blocks-editor', 'registered' )->deps = array();
	880	+
	881	+ Assets::enqueue_script( 'jetpack-blocks-editor' );
	882	+
	883	+ if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) {
	884	+ $user = wp_get_current_user();
	885	+ $user_data = array(
	886	+ 'email' => $user->user_email,
	887	+ 'userid' => $user->ID,
	888	+ 'username' => $user->user_login,
	889	+ );
	890	+ $blog_id = get_current_blog_id();
	891	+ $is_current_user_connected = true;
	892	+ } else {
	893	+ $user_data = Jetpack_Tracks_Client::get_connected_user_tracks_identity();
	894	+ $blog_id = Jetpack_Options::get_option( 'id', 0 );
	895	+ $is_current_user_connected = ( new Connection_Manager( 'jetpack' ) )->is_user_connected();
	896	+ }
	897	+
	898	+ if ( $blocks_variation === 'beta' && $is_current_user_connected ) {
	899	+ wp_enqueue_style( 'recoleta-font', '//s1.wp.com/i/fonts/recoleta/css/400.min.css', array(), Constants::get_constant( 'JETPACK__VERSION' ) );
	900	+ }
	901	+ // AI Assistant
	902	+ $ai_assistant_state = array(
	903	+ 'is-enabled' => Jetpack_AI_Settings::is_ai_enabled(),
	904	+ 'is-seo-enabled' => Jetpack_AI_Settings::is_ai_seo_enabled(),
	905	+ );
	906	+
	907	+ $screen_base = null;
	908	+ if ( function_exists( 'get_current_screen' ) ) {
	909	+ $current_screen = get_current_screen();
	910	+ $screen_base = $current_screen ? $current_screen->base : null;
	911	+ }
	912	+
	913	+ $modules = array();
	914	+ if ( class_exists( 'Jetpack_Core_API_Module_List_Endpoint' ) ) {
	915	+ $module_list_endpoint = new Jetpack_Core_API_Module_List_Endpoint();
	916	+ $modules = $module_list_endpoint->get_modules();
	917	+ }
	918	+
	919	+ $jetpack_plan = Jetpack_Plan::get();
	920	+ $initial_state = array(
	921	+ 'available_blocks' => self::get_availability(),
	922	+ 'blocks_variation' => $blocks_variation,
	923	+ 'modules' => $modules,
	924	+ 'jetpack' => array(
	925	+ 'is_active' => Jetpack::is_connection_ready(),
	926	+ 'is_current_user_connected' => $is_current_user_connected,
	927	+ /** This filter is documented in class.jetpack-gutenberg.php */
	928	+ 'enable_upgrade_nudge' => apply_filters( 'jetpack_block_editor_enable_upgrade_nudge', false ),
	929	+ 'is_private_site' => $status->is_private_site(),
	930	+ 'is_coming_soon' => $status->is_coming_soon(),
	931	+ 'is_offline_mode' => $status->is_offline_mode(),
	932	+ 'is_newsletter_feature_enabled' => class_exists( '\Jetpack_Memberships' ),
	933	+ // Whether the current user may send a newsletter test email to an
	934	+ // address other than their own. The wpcom guard enforces this on send
	935	+ // (also checking add_users and site stickers); this flag only controls
	936	+ // whether the editor's recipient field is editable. Approximated with
	937	+ // manage_options so editors, who can only test-send to themselves,
	938	+ // aren't shown an editable field that would always be rejected.
	939	+ 'can_send_test_email_to_others' => current_user_can( 'manage_options' ),
	940	+ // Which settings-driven subscribe placements are on, for the Site Editor's admin-only notice.
	941	+ 'subscribe_placements' => current_user_can( 'manage_options' ) ? array(
	942	+ 'sm_enabled' => (bool) get_option( 'sm_enabled', false ),
	943	+ 'jetpack_subscribe_overlay_enabled' => (bool) get_option( 'jetpack_subscribe_overlay_enabled', false ),
	944	+ 'jetpack_subscribe_floating_button_enabled' => (bool) get_option( 'jetpack_subscribe_floating_button_enabled', false ),
	945	+ 'wpcom_action_bar' => ( new Host() )->is_wpcom_simple() && ! get_option( 'wpcom_hide_action_bar' ),
	946	+ ) : null,
	947	+ // this is the equivalent of JP initial state siteData.showMyJetpack (class-jetpack-redux-state-helper)
	948	+ // used to determine if we can link to My Jetpack from the block editor
	949	+ 'is_my_jetpack_available' => My_Jetpack_Initializer::should_initialize(),
	950	+ 'jetpack_plan' => array(
	951	+ 'data' => $jetpack_plan['product_slug'],
	952	+ ),
	953	+ /**
	954	+ * Enable the RePublicize UI in the block editor context.
	955	+ *
	956	+ * @module publicize
	957	+ *
	958	+ * @since 10.3.0
	959	+ * @deprecated 11.5 This is a feature flag that is no longer used.
	960	+ *
	961	+ * @param bool true Enable the RePublicize UI in the block editor context. Defaults to true.
	962	+ */
	963	+ 'republicize_enabled' => apply_filters( 'jetpack_block_editor_republicize_feature', true ),
	964	+ ),
	965	+ 'siteFragment' => $status->get_site_suffix(),
	966	+ 'adminUrl' => esc_url( admin_url() ),
	967	+ 'tracksUserData' => $user_data,
	968	+ 'wpcomBlogId' => $blog_id,
	969	+ 'allowedMimeTypes' => wp_get_mime_types(),
	970	+ 'siteLocale' => str_replace( '_', '-', get_locale() ),
	971	+ 'ai-assistant' => $ai_assistant_state,
	972	+ 'screenBase' => $screen_base,
	973	+ /**
	974	+ * Add your own feature flags to the block editor.
	975	+ *
	976	+ * You can access the feature flags in the block editor via hasFeatureFlag( 'your-feature-flag' ) function.
	977	+ *
	978	+ * @since 14.8
	979	+ *
	980	+ * @param array true Enable the RePublicize UI in the block editor context. Defaults to true.
	981	+ */
	982	+ 'feature_flags' => apply_filters( 'jetpack_block_editor_feature_flags', array() ),
	983	+ 'pluginBasePath' => plugins_url( '', Constants::get_constant( 'JETPACK__PLUGIN_FILE' ) ),
	984	+ );
	985	+
	986	+ wp_localize_script(
	987	+ Shared_Stores_Assets::SCRIPT_HANDLE,
	988	+ 'Jetpack_Editor_Initial_State',
	989	+ $initial_state
	990	+ );
	991	+
	992	+ // Adds Connection package initial state.
	993	+ Connection_Initial_State::render_script( 'jetpack-blocks-editor' );
	994	+ }
	995	+
	996	+ /**
	997	+ * Block feature names in the `no-post-editor` preset (extensions/index.json): blocks
	998	+ * whose editor bundle is usable outside the post editor, so they appear in front-end
	999	+ * block editors such as P2. These must never be deferred (see self::$lazy_blocks and
	1000	+ * self::load_independent_blocks()).
	1001	+ *
	1002	+ * @since 16.2
	1003	+ *
	1004	+ * @return string[] Feature names, or an empty array when the preset is unavailable.
	1005	+ */
	1006	+ private static function get_no_post_editor_extensions() {
	1007	+ $preset = self::get_preset();
	1008	+ if ( is_object( $preset ) && isset( $preset->{'no-post-editor'} ) && is_array( $preset->{'no-post-editor'} ) ) {
	1009	+ return $preset->{'no-post-editor'};
	1010	+ }
	1011	+ return array();
	1012	+ }
	1013	+
	1014	+ /**
	1015	+ * Some blocks do not depend on a specific module,
	1016	+ * and can consequently be loaded outside of the usual modules.
	1017	+ * We will look for such modules in the extensions/ directory.
	1018	+ *
	1019	+ * @since 7.1.0
	1020	+ * @since 16.0 Pure display blocks are deferred on front-end requests and registered on first render.
	1021	+ * @since 16.2 Blocks in the `no-post-editor` preset are never deferred, so front-end editors (e.g. P2) keep them.
	1022	+ * @see wp_common_block_scripts_and_styles()
	1023	+ */
	1024	+ public static function load_independent_blocks() {
	1025	+ if ( self::should_load() ) {
	1026	+ /**
	1027	+ * Look for files that match our list of available Jetpack Gutenberg extensions (blocks and plugins).
	1028	+ * If available, load them.
	1029	+ */
	1030	+ $directories = array( 'blocks', 'plugins', 'extended-blocks' );
	1031	+
	1032	+ /*
	1033	+ * On plain front-end requests, defer the registration PHP of pure display
	1034	+ * blocks (see self::$lazy_blocks) until the block is actually encountered
	1035	+ * while rendering. The block editor, the block-types REST endpoint and
	1036	+ * server-side rendering all run in a "block-editor context" and keep loading
	1037	+ * every block eagerly, so their behavior is unchanged.
	1038	+ */
	1039	+ $defer = ! self::is_block_editor_context();
	1040	+
	1041	+ /*
	1042	+ * Front-end block editors (e.g. P2) render the inserter on a plain front-end
	1043	+ * request, so is_block_editor_context() is false there, yet a block must be
	1044	+ * registered on `init` for get_availability() to report it and keep it in the
	1045	+ * inserter. Never defer a block that ships in the `no-post-editor` preset —
	1046	+ * those are precisely the blocks usable outside the post editor.
	1047	+ */
	1048	+ $no_post_editor_blocks = $defer ? self::get_no_post_editor_extensions() : array();
	1049	+
	1050	+ foreach ( static::get_extensions() as $extension ) {
	1051	+ if (
	1052	+ $defer
	1053	+ && in_array( $extension, self::$lazy_blocks, true )
	1054	+ && ! in_array( $extension, $no_post_editor_blocks, true )
	1055	+ ) {
	1056	+ self::$deferred_blocks[ $extension ] = true;
	1057	+ continue;
	1058	+ }
	1059	+
	1060	+ foreach ( $directories as $dirname ) {
	1061	+ $path = JETPACK__PLUGIN_DIR . "extensions/{$dirname}/{$extension}/{$extension}.php";
	1062	+
	1063	+ if ( file_exists( $path ) ) {
	1064	+ include_once $path;
	1065	+ continue 2;
	1066	+ }
	1067	+ }
	1068	+ }
	1069	+
	1070	+ if ( ! empty( self::$deferred_blocks ) ) {
	1071	+ add_filter( 'pre_render_block', array( __CLASS__, 'lazy_register_deferred_block' ), 10, 3 );
	1072	+ }
	1073	+ }
	1074	+ }
	1075	+
	1076	+ /**
	1077	+ * Register deferred blocks present in a top-level block's subtree before it renders.
	1078	+ *
	1079	+ * Hooked to `pre_render_block`. For a top-level block ($parent_block is null) the
	1080	+ * filter fires before core builds the block's WP_Block object, so we walk the whole
	1081	+ * parsed subtree and register every deferred Jetpack block it contains. This must
	1082	+ * happen at the top level: core resolves an inner block's `block_type` when it
	1083	+ * constructs that inner WP_Block, which is *before* the inner block's own
	1084	+ * `pre_render_block` fires — so registering a deferred dynamic block only when its
	1085	+ * own inner filter fires would be too late and its render_callback would be skipped.
	1086	+ * Inner-block invocations (non-null $parent_block) are ignored because the top-level
	1087	+ * walk has already handled the whole tree. Returns $pre_render untouched.
	1088	+ *
	1089	+ * @since 16.0
	1090	+ *
	1091	+ * @param string|null $pre_render The pre-rendered content. Default null.
	1092	+ * @param array $parsed_block The parsed block being rendered.
	1093	+ * @param \WP_Block|null $parent_block Parent block, or null for a top-level block.
	1094	+ *
	1095	+ * @return string|null Unchanged $pre_render.
	1096	+ */
	1097	+ public static function lazy_register_deferred_block( $pre_render, $parsed_block, $parent_block = null ) {
	1098	+ // Respect any earlier short-circuit, only act on top-level blocks, and stop
	1099	+ // once every deferred block on the page has been registered.
	1100	+ if ( null !== $pre_render || null !== $parent_block || empty( self::$deferred_blocks ) ) {
	1101	+ return $pre_render;
	1102	+ }
	1103	+
	1104	+ self::register_deferred_blocks_in_subtree( $parsed_block );
	1105	+
	1106	+ return $pre_render;
	1107	+ }
	1108	+
	1109	+ /**
	1110	+ * Recursively register any deferred Jetpack blocks found in a parsed block subtree.
	1111	+ *
	1112	+ * @since 16.0
	1113	+ *
	1114	+ * @param array $parsed_block A parsed block (with optional `innerBlocks`).
	1115	+ * @param array $seen_refs Reusable-block IDs already visited, to guard against cycles.
	1116	+ *
	1117	+ * @return void
	1118	+ */
	1119	+ private static function register_deferred_blocks_in_subtree( $parsed_block, &$seen_refs = array() ) {
	1120	+ if ( empty( self::$deferred_blocks ) ) {
	1121	+ return;
	1122	+ }
	1123	+
	1124	+ $block_name = $parsed_block['blockName'] ?? '';
	1125	+ if ( '' !== $block_name && str_starts_with( $block_name, 'jetpack/' ) ) {
	1126	+ $feature = substr( $block_name, strlen( 'jetpack/' ) );
	1127	+ if ( ! empty( self::$deferred_blocks[ $feature ] ) ) {
	1128	+ // Only attempt registration once per block, whether or not it succeeds
	1129	+ // (a block guarded by a connection/module check may intentionally not register).
	1130	+ unset( self::$deferred_blocks[ $feature ] );
	1131	+
	1132	+ if ( ! self::is_registered( $block_name ) ) {
	1133	+ self::load_and_register_deferred_block( $feature );
	1134	+ }
	1135	+ }
	1136	+ }
	1137	+
	1138	+ /*
	1139	+ * A synced pattern / reusable block (core/block) keeps its content in a separate
	1140	+ * wp_block post that core only parses at render time (render_block_core_block),
	1141	+ * so it is absent from this parsed tree. Resolve the reference and recurse so a
	1142	+ * deferred block inside the pattern is registered before core builds its WP_Block.
	1143	+ *
	1144	+ * core/navigation has the same ref-based hidden-content shape (a wp_navigation
	1145	+ * post) but is intentionally not handled: none of the deferred blocks can be
	1146	+ * inserted into a navigation menu through the editor, and resolving the ref would
	1147	+ * add a get_post()/parse_blocks() on essentially every front-end page (menus are
	1148	+ * near-ubiquitous) for a case that cannot occur without hand-authored markup.
	1149	+ */
	1150	+ if ( 'core/block' === $block_name && ! empty( $parsed_block['attrs']['ref'] ) ) {
	1151	+ $ref = (int) $parsed_block['attrs']['ref'];
	1152	+ if ( ! isset( $seen_refs[ $ref ] ) ) {
	1153	+ $seen_refs[ $ref ] = true;
	1154	+ $reusable_block = get_post( $ref );
	1155	+ if ( $reusable_block instanceof \WP_Post && 'wp_block' === $reusable_block->post_type ) {
	1156	+ foreach ( parse_blocks( $reusable_block->post_content ) as $inner_block ) {
	1157	+ self::register_deferred_blocks_in_subtree( $inner_block, $seen_refs );
	1158	+ }
	1159	+ }
	1160	+ }
	1161	+ }
	1162	+
	1163	+ if ( ! empty( $parsed_block['innerBlocks'] ) ) {
	1164	+ foreach ( $parsed_block['innerBlocks'] as $inner_block ) {
	1165	+ self::register_deferred_blocks_in_subtree( $inner_block, $seen_refs );
	1166	+ }
	1167	+ }
	1168	+ }
	1169	+
	1170	+ /**
	1171	+ * Include a deferred block's registration PHP and run the `init` callback it
	1172	+ * adds, immediately.
	1173	+ *
	1174	+ * The block files register themselves with `add_action( 'init', … )`. By render
	1175	+ * time `init` has long since fired, so including the file is not enough on its
	1176	+ * own: we capture the callback(s) the include adds to `init` and invoke them now.
	1177	+ * Only blocks in self::$lazy_blocks reach this path, and each adds exactly its
	1178	+ * own registration callback to `init`, so this runs that single registration.
	1179	+ *
	1180	+ * @since 16.0
	1181	+ *
	1182	+ * @param string $feature Block feature name (directory name without the `jetpack/` prefix).
	1183	+ *
	1184	+ * @return void
	1185	+ */
	1186	+ private static function load_and_register_deferred_block( $feature ) {
	1187	+ $path = JETPACK__PLUGIN_DIR . "extensions/blocks/{$feature}/{$feature}.php";
	1188	+ if ( ! file_exists( $path ) ) {
	1189	+ self::warn_about_deferred_block_registration_failure( $feature, 'missing block registration file' );
	1190	+ return;
	1191	+ }
	1192	+
	1193	+ global $wp_filter;
	1194	+
	1195	+ $before = isset( $wp_filter['init'] ) ? $wp_filter['init']->callbacks : array();
	1196	+
	1197	+ include_once $path;
	1198	+
	1199	+ if ( ! isset( $wp_filter['init'] ) ) {
	1200	+ self::warn_about_deferred_block_registration_failure( $feature, 'block file did not add an init callback' );
	1201	+ return;
	1202	+ }
	1203	+
	1204	+ $registered_callback = false;
	1205	+
	1206	+ // Run (and then detach) any callback the include just added to `init`.
	1207	+ foreach ( $wp_filter['init']->callbacks as $priority => $callbacks ) {
	1208	+ foreach ( $callbacks as $id => $callback ) {
	1209	+ if ( isset( $before[ $priority ][ $id ] ) ) {
	1210	+ continue;
	1211	+ }
	1212	+ $registered_callback = true;
	1213	+ if ( is_callable( $callback['function'] ) ) {
	1214	+ call_user_func( $callback['function'] );
	1215	+ }
	1216	+ remove_action( 'init', $callback['function'], $priority );
	1217	+ }
	1218	+ }
	1219	+
	1220	+ if ( ! $registered_callback ) {
	1221	+ self::warn_about_deferred_block_registration_failure( $feature, 'block file did not add a new init callback' );
	1222	+ }
	1223	+ }
	1224	+
	1225	+ /**
	1226	+ * Surface lazy-registration mistakes during debugging without adding front-end noise.
	1227	+ *
	1228	+ * @since 16.0
	1229	+ *
	1230	+ * @param string $feature Block feature name (directory name without the `jetpack/` prefix).
	1231	+ * @param string $reason Short reason for the failure.
	1232	+ *
	1233	+ * @return void
	1234	+ */
	1235	+ private static function warn_about_deferred_block_registration_failure( $feature, $reason ) {
	1236	+ if ( ! ( defined( 'WP_DEBUG' ) && WP_DEBUG ) || ! function_exists( '_doing_it_wrong' ) ) {
	1237	+ return;
	1238	+ }
	1239	+
	1240	+ _doing_it_wrong(
	1241	+ __METHOD__,
	1242	+ sprintf(
	1243	+ /* translators: 1: Jetpack block feature name. 2: Failure reason. */
	1244	+ esc_html__( 'Lazy Jetpack block registration failed for "%1$s": %2$s.', 'jetpack' ),
	1245	+ esc_html( $feature ),
	1246	+ esc_html( $reason )
	1247	+ ),
	1248	+ '16.0'
	1249	+ );
	1250	+ }
	1251	+
	1252	+ /**
	1253	+ * Determine whether the current request is a block-editor context that needs
	1254	+ * every Jetpack block loaded eagerly on `init`.
	1255	+ *
	1256	+ * Returns true for admin, REST, cron, WP-CLI and XML-RPC requests so the editor,
	1257	+ * the `/wp/v2/block-types` endpoint and server-side rendering keep seeing the full
	1258	+ * set of blocks. Returns false only for plain front-end web requests, where pure
	1259	+ * display blocks are registered just-in-time as they render.
	1260	+ *
	1261	+ * This runs at module-load time (around after_setup_theme), before core defines
	1262	+ * REST_REQUEST during parse_request, so self-hosted and Atomic REST requests are
	1263	+ * detected from the request URL instead of the constant. That URL check cannot
	1264	+ * work on WordPress.com Simple: its public API filters `rest_url_prefix` to an
	1265	+ * empty string, so rest_get_url_prefix() returns '' and the REST roots computed
	1266	+ * below collapse to '//', which no request path can match. Simple's requests are
	1267	+ * detected via REST_API_REQUEST instead, which its API entry points define before
	1268	+ * wp-load.php runs.
	1269	+ *
	1270	+ * @since 16.0
	1271	+ *
	1272	+ * @return bool True for block-editor (non-front-end) contexts, false for plain front-end requests.
	1273	+ */
	1274	+ private static function is_block_editor_context() {
	1275	+ if ( is_admin() ) {
	1276	+ return true;
	1277	+ }
	1278	+
	1279	+ /*
	1280	+ * Treat any non-front-end execution context as block-editor. These are not the
	1281	+ * front-end hot path this gate optimizes, and some still render block content
	1282	+ * (e.g. cron-generated subscription e-mails) that depends on full registration.
	1283	+ *
	1284	+ * Core defines REST_REQUEST during parse_request, after this runs, so it is
	1285	+ * normally still unset here; it is checked anyway so the result stays correct
	1286	+ * if this is ever called later in the request. REST_API_REQUEST is what catches
	1287	+ * WordPress.com Simple, where the URL check below cannot work at all (see the
	1288	+ * method docblock).
	1289	+ */
	1290	+ if (
	1291	+ Constants::is_true( 'DOING_CRON' )
	1292	+ || Constants::is_true( 'WP_CLI' )
	1293	+ || Constants::is_true( 'XMLRPC_REQUEST' )
	1294	+ || Constants::is_true( 'REST_REQUEST' )
	1295	+ || Constants::is_true( 'REST_API_REQUEST' )
	1296	+ ) {
	1297	+ return true;
	1298	+ }
	1299	+
	1300	+ /*
	1301	+ * No request URI means a non-web execution context (WP-CLI without it, test
	1302	+ * suites, etc.). A genuine front-end page request always carries one, so it
	1303	+ * costs nothing on the hot path to treat the empty case as "load eagerly".
	1304	+ */
	1305	+ $request_uri = isset( $_SERVER['REQUEST_URI'] ) ? sanitize_text_field( wp_unslash( $_SERVER['REQUEST_URI'] ) ) : '';
	1306	+ if ( '' === $request_uri ) {
	1307	+ return true;
	1308	+ }
	1309	+
	1310	+ /*
	1311	+ * Anchor the REST root (home path + prefix) at the start of the request path,
	1312	+ * so a front-end URL that merely carries the prefix in a query value or a
	1313	+ * deeper path segment is not misread as a REST request. home_url() is used
	1314	+ * rather than rest_url() so detection does not depend on permalink structure.
	1315	+ * Both the rewritten `/wp-json/` form and the index-permalink
	1316	+ * `/index.php/wp-json/` form (used when the site lacks pretty permalinks) are
	1317	+ * matched.
	1318	+ */
	1319	+ $path = (string) wp_parse_url( $request_uri, PHP_URL_PATH );
	1320	+ if ( '' !== $path ) {
	1321	+ $home_path = trailingslashit( (string) wp_parse_url( home_url(), PHP_URL_PATH ) );
	1322	+ $rest_prefix = trailingslashit( rest_get_url_prefix() );
	1323	+ $rest_roots = array(
	1324	+ $home_path . $rest_prefix,
	1325	+ $home_path . 'index.php/' . $rest_prefix,
	1326	+ );
	1327	+ foreach ( $rest_roots as $rest_root ) {
	1328	+ if ( str_starts_with( trailingslashit( $path ), $rest_root ) ) {
	1329	+ return true;
	1330	+ }
	1331	+ }
	1332	+ }
	1333	+
	1334	+ // Plain-permalink REST uses a `rest_route` query var; match the exact key.
	1335	+ $query = (string) wp_parse_url( $request_uri, PHP_URL_QUERY );
	1336	+ if ( '' !== $query ) {
	1337	+ parse_str( $query, $query_vars );
	1338	+ if ( ! empty( $query_vars['rest_route'] ) ) {
	1339	+ return true;
	1340	+ }
	1341	+ }
	1342	+
	1343	+ return false;
	1344	+ }
	1345	+
	1346	+ /**
	1347	+ * Editor-oriented extensions that nonetheless have front-end side effects and must
	1348	+ * therefore keep loading on every request, even outside the block editor.
	1349	+ *
	1350	+ * Keyed by directory ('plugins' / 'extended-blocks') for an exact, intentional match.
	1351	+ *
	1352	+ * @since 16.0
	1353	+ *
	1354	+ * @var array
	1355	+ */
	1356	+ private static $frontend_editor_extensions = array(
	1357	+ 'plugins' => array(
	1358	+ // Mounts the Reader Chat widget on the front end (wp_enqueue_scripts) and
	1359	+ // wires the AI sidebar/provider registration AI Assistant depends on.
	1360	+ 'ai-assistant-plugin',
	1361	+ // Signals Big Sky via the jetpack_image_studio_enabled filter on `init`,
	1362	+ // which can run on the front end.
	1363	+ 'image-studio',
	1364	+ ),
	1365	+ 'extended-blocks' => array(
	1366	+ // Registers the videopress/video block on `init`, required to render it on the front end.
	1367	+ 'videopress-video',
	1368	+ // Registers the `premium-content/container` plan availability that the Premium Content
	1369	+ // block's front-end render reads via required_plan_checks(); skipping it breaks the paywall.
	1370	+ 'premium-content-container',
	1371	+ ),
	1372	+ );
	1373	+
	1374	+ /**
	1375	+ * Loads PHP components of block editor extensions.
	1376	+ *
	1377	+ * @since 8.9.0
	1378	+ */
	1379	+ public static function load_block_editor_extensions() {
	1380	+ if ( self::should_load() ) {
	1381	+ // Block editor extensions to load.
	1382	+ $extensions_to_load = array(
	1383	+ 'extended-blocks',
	1384	+ 'plugins',
	1385	+ );
	1386	+
	1387	+ $is_editor_context = self::is_block_editor_context();
	1388	+
	1389	+ // Collect the extension paths.
	1390	+ foreach ( $extensions_to_load as $extension_to_load ) {
	1391	+ $extensions_folder = glob( JETPACK__PLUGIN_DIR . 'extensions/' . $extension_to_load . '/*' );
	1392	+
	1393	+ $frontend_allow_list = self::$frontend_editor_extensions[ $extension_to_load ] ?? array();
	1394	+
	1395	+ // Require each of the extension files, in case it exists.
	1396	+ foreach ( $extensions_folder as $extension_folder ) {
	1397	+ $name = basename( $extension_folder );
	1398	+
	1399	+ /*
	1400	+ * On plain front-end requests, only load extensions that have known
	1401	+ * front-end side effects. Editor-only extensions are skipped here and
	1402	+ * loaded on admin/REST (block-editor) requests instead, reducing the
	1403	+ * per-front-end-request PHP/opcache footprint.
	1404	+ */
	1405	+ if ( ! $is_editor_context && ! in_array( $name, $frontend_allow_list, true ) ) {
	1406	+ continue;
	1407	+ }
	1408	+
	1409	+ $extension_file_path = JETPACK__PLUGIN_DIR . 'extensions/' . $extension_to_load . '/' . $name . '/' . $name . '.php';
	1410	+
	1411	+ if ( file_exists( $extension_file_path ) ) {
	1412	+ include_once $extension_file_path;
	1413	+ }
	1414	+ }
	1415	+ }
	1416	+ }
	1417	+ }
	1418	+
	1419	+ /**
	1420	+ * Determine whether a site should use the default set of blocks, or a custom set.
	1421	+ * Possible variations are currently beta, experimental, and production.
	1422	+ *
	1423	+ * @since 8.1.0
	1424	+ *
	1425	+ * @return string $block_varation production|beta|experimental
	1426	+ */
	1427	+ public static function blocks_variation() {
	1428	+ // Default to production blocks.
	1429	+ $block_varation = 'production';
	1430	+
	1431	+ /*
	1432	+ * Prefer to use this JETPACK_BLOCKS_VARIATION constant
	1433	+ * or the jetpack_blocks_variation filter
	1434	+ * to set the block variation in your code.
	1435	+ */
	1436	+ $default = Constants::get_constant( 'JETPACK_BLOCKS_VARIATION' );
	1437	+ if ( ! empty( $default ) && in_array( $default, array( 'beta', 'experimental', 'production' ), true ) ) {
	1438	+ $block_varation = $default;
	1439	+ }
	1440	+
	1441	+ /**
	1442	+ * Alternative to `JETPACK_BETA_BLOCKS`, set to `true` to load Beta Blocks.
	1443	+ *
	1444	+ * @since 6.9.0
	1445	+ * @deprecated 11.8.0 Use jetpack_blocks_variation filter instead.
	1446	+ *
	1447	+ * @param boolean
	1448	+ */
	1449	+ $is_beta = apply_filters_deprecated(
	1450	+ 'jetpack_load_beta_blocks',
	1451	+ array( false ),
	1452	+ 'jetpack-11.8.0',
	1453	+ 'jetpack_blocks_variation'
	1454	+ );
	1455	+
	1456	+ /*
	1457	+ * Switch to beta blocks if you use the JETPACK_BETA_BLOCKS constant
	1458	+ * or the deprecated jetpack_load_beta_blocks filter.
	1459	+ * This only applies when not using the newer JETPACK_BLOCKS_VARIATION constant.
	1460	+ */
	1461	+ if (
	1462	+ empty( $default )
	1463	+ && (
	1464	+ $is_beta
	1465	+ || Constants::is_true( 'JETPACK_BETA_BLOCKS' )
	1466	+ )
	1467	+ ) {
	1468	+ $block_varation = 'beta';
	1469	+ }
	1470	+
	1471	+ /**
	1472	+ * Alternative to `JETPACK_EXPERIMENTAL_BLOCKS`, set to `true` to load Experimental Blocks.
	1473	+ *
	1474	+ * @since 6.9.0
	1475	+ * @deprecated 11.8.0 Use jetpack_blocks_variation filter instead.
	1476	+ *
	1477	+ * @param boolean
	1478	+ */
	1479	+ $is_experimental = apply_filters_deprecated(
	1480	+ 'jetpack_load_experimental_blocks',
	1481	+ array( false ),
	1482	+ 'jetpack-11.8.0',
	1483	+ 'jetpack_blocks_variation'
	1484	+ );
	1485	+
	1486	+ /*
	1487	+ * Switch to experimental blocks if you use the JETPACK_EXPERIMENTAL_BLOCKS constant
	1488	+ * or the deprecated jetpack_load_experimental_blocks filter.
	1489	+ * This only applies when not using the newer JETPACK_BLOCKS_VARIATION constant.
	1490	+ */
	1491	+ if (
	1492	+ empty( $default )
	1493	+ && (
	1494	+ $is_experimental
	1495	+ || Constants::is_true( 'JETPACK_EXPERIMENTAL_BLOCKS' )
	1496	+ )
	1497	+ ) {
	1498	+ $block_varation = 'experimental';
	1499	+ }
	1500	+
	1501	+ /**
	1502	+ * Allow customizing the variation of blocks in use on a site.
	1503	+ * Overwrites any previously set values, whether by constant or filter.
	1504	+ *
	1505	+ * @since 8.1.0
	1506	+ *
	1507	+ * @param string $block_variation Can be beta, experimental, and production. Defaults to production.
	1508	+ */
	1509	+ return apply_filters( 'jetpack_blocks_variation', $block_varation );
	1510	+ }
	1511	+
	1512	+ /**
	1513	+ * Get a list of extensions available for the variation you chose.
	1514	+ *
	1515	+ * @since 8.1.0
	1516	+ *
	1517	+ * @param object $preset_extensions_manifest List of extensions available in Jetpack.
	1518	+ * @param string $blocks_variation Subset of blocks. production|beta|experimental.
	1519	+ *
	1520	+ * @return array $preset_extensions Array of extensions for that variation
	1521	+ */
	1522	+ public static function get_extensions_preset_for_variation( $preset_extensions_manifest, $blocks_variation ) {
	1523	+ $preset_extensions = isset( $preset_extensions_manifest->{ $blocks_variation } )
	1524	+ ? (array) $preset_extensions_manifest->{ $blocks_variation }
	1525	+ : array();
	1526	+
	1527	+ /*
	1528	+ * Experimental and Beta blocks need the production blocks as well.
	1529	+ */
	1530	+ if (
	1531	+ 'experimental' === $blocks_variation
	1532	+ || 'beta' === $blocks_variation
	1533	+ ) {
	1534	+ $production_extensions = isset( $preset_extensions_manifest->production )
	1535	+ ? (array) $preset_extensions_manifest->production
	1536	+ : array();
	1537	+
	1538	+ $preset_extensions = array_unique( array_merge( $preset_extensions, $production_extensions ) );
	1539	+ }
	1540	+
	1541	+ /*
	1542	+ * Beta blocks need the experimental blocks as well.
	1543	+ *
	1544	+ * If you've chosen to see Beta blocks,
	1545	+ * we want to make all blocks available to you:
	1546	+ * - Production
	1547	+ * - Experimental
	1548	+ * - Beta
	1549	+ */
	1550	+ if ( 'beta' === $blocks_variation ) {
	1551	+ $production_extensions = isset( $preset_extensions_manifest->experimental )
	1552	+ ? (array) $preset_extensions_manifest->experimental
	1553	+ : array();
	1554	+
	1555	+ $preset_extensions = array_unique( array_merge( $preset_extensions, $production_extensions ) );
	1556	+ }
	1557	+
	1558	+ return $preset_extensions;
	1559	+ }
	1560	+
	1561	+ /**
	1562	+ * Validate a URL used in a SSR block.
	1563	+ *
	1564	+ * @since 8.3.0
	1565	+ *
	1566	+ * @param string $url URL saved as an attribute in block.
	1567	+ * @param array $allowed Array of allowed hosts for that block, or regexes to check against.
	1568	+ * @param bool $is_regex Array of regexes matching the URL that could be used in block.
	1569	+ *
	1570	+ * @return bool|string
	1571	+ */
	1572	+ public static function validate_block_embed_url( $url, $allowed = array(), $is_regex = false ) {
	1573	+ if (
	1574	+ empty( $url )
	1575	+ || ! is_array( $allowed )
	1576	+ || empty( $allowed )
	1577	+ ) {
	1578	+ return false;
	1579	+ }
	1580	+
	1581	+ $url_components = wp_parse_url( $url );
	1582	+
	1583	+ // Bail early if we cannot find a host.
	1584	+ if ( empty( $url_components['host'] ) ) {
	1585	+ return false;
	1586	+ }
	1587	+
	1588	+ // Only http and https URLs are valid.
	1589	+ if (
	1590	+ isset( $url_components['scheme'] )
	1591	+ && ! in_array( strtolower( $url_components['scheme'] ), array( 'http', 'https' ), true )
	1592	+ ) {
	1593	+ return false;
	1594	+ }
	1595	+
	1596	+ // Normalize URL.
	1597	+ $url = sprintf(
	1598	+ '%s://%s%s%s',
	1599	+ $url_components['scheme'] ?? 'https',
	1600	+ $url_components['host'],
	1601	+ $url_components['path'] ?? '/',
	1602	+ isset( $url_components['query'] ) ? '?' . $url_components['query'] : ''
	1603	+ );
	1604	+
	1605	+ if ( ! empty( $url_components['fragment'] ) ) {
	1606	+ $url = $url . '#' . rawurlencode( $url_components['fragment'] );
	1607	+ }
	1608	+
	1609	+ /*
	1610	+ * If we're using an allowed list of hosts,
	1611	+ * check if the URL belongs to one of the domains allowed for that block.
	1612	+ */
	1613	+ if (
	1614	+ false === $is_regex
	1615	+ && in_array( $url_components['host'], $allowed, true )
	1616	+ ) {
	1617	+ return $url;
	1618	+ }
	1619	+
	1620	+ /*
	1621	+ * If we are using an array of regexes to check against,
	1622	+ * loop through that.
	1623	+ */
	1624	+ if ( true === $is_regex ) {
	1625	+ foreach ( $allowed as $regex ) {
	1626	+ if ( 1 === preg_match( $regex, $url ) ) {
	1627	+ return $url;
	1628	+ }
	1629	+ }
	1630	+ }
	1631	+
	1632	+ return false;
	1633	+ }
	1634	+
	1635	+ /**
	1636	+ * Determines whether a preview of the block with an upgrade nudge should
	1637	+ * be displayed for admins on the site frontend.
	1638	+ *
	1639	+ * @since 8.4.0
	1640	+ *
	1641	+ * @param array $availability_for_block The availability for the block.
	1642	+ *
	1643	+ * @return bool
	1644	+ */
	1645	+ public static function should_show_frontend_preview( $availability_for_block ) {
	1646	+ return (
	1647	+ isset( $availability_for_block['details']['required_plan'] )
	1648	+ && current_user_can( 'manage_options' )
	1649	+ && ! is_feed()
	1650	+ );
	1651	+ }
	1652	+
	1653	+ /**
	1654	+ * Output an UpgradeNudge Component on the frontend of a site.
	1655	+ *
	1656	+ * @since 8.4.0
	1657	+ *
	1658	+ * @param string $plan The plan that users need to purchase to make the block work.
	1659	+ *
	1660	+ * @return string
	1661	+ */
	1662	+ public static function upgrade_nudge( $plan ) {
	1663	+ require_once JETPACK__PLUGIN_DIR . '_inc/lib/components.php';
	1664	+ return Jetpack_Components::render_upgrade_nudge(
	1665	+ array(
	1666	+ 'plan' => $plan,
	1667	+ )
	1668	+ );
	1669	+ }
	1670	+
	1671	+ /**
	1672	+ * Output a notice within a block.
	1673	+ *
	1674	+ * @since 8.6.0
	1675	+ *
	1676	+ * @param string $message Notice we want to output.
	1677	+ * @param string $status Status of the notice. Can be one of success, info, warning, error. info by default.
	1678	+ * @param string $classes List of CSS classes.
	1679	+ *
	1680	+ * @return string
	1681	+ */
	1682	+ public static function notice( $message, $status = 'info', $classes = '' ) {
	1683	+ if (
	1684	+ empty( $message )
	1685	+ || ! in_array( $status, array( 'success', 'info', 'warning', 'error' ), true )
	1686	+ ) {
	1687	+ return '';
	1688	+ }
	1689	+
	1690	+ $color = '';
	1691	+ switch ( $status ) {
	1692	+ case 'success':
	1693	+ $color = '#00a32a';
	1694	+ break;
	1695	+ case 'warning':
	1696	+ $color = '#dba617';
	1697	+ break;
	1698	+ case 'error':
	1699	+ $color = '#d63638';
	1700	+ break;
	1701	+ case 'info':
	1702	+ default:
	1703	+ $color = '#72aee6';
	1704	+ break;
	1705	+ }
	1706	+
	1707	+ return sprintf(
	1708	+ '<div class="jetpack-block__notice %1$s %3$s" style="border-left:5px solid %4$s;padding:1em;background-color:#f8f9f9;">%2$s</div>',
	1709	+ esc_attr( $status ),
	1710	+ wp_kses(
	1711	+ $message,
	1712	+ array(
	1713	+ 'br' => array(),
	1714	+ 'p' => array(),
	1715	+ 'a' => array(
	1716	+ 'href' => array(),
	1717	+ 'target' => array(),
	1718	+ 'rel' => array(),
	1719	+ ),
	1720	+ )
	1721	+ ),
	1722	+ esc_attr( $classes ),
	1723	+ sanitize_hex_color( $color )
	1724	+ );
	1725	+ }
	1726	+
	1727	+ /**
	1728	+ * Retrieve site-specific features for Simple sites.
	1729	+ *
	1730	+ * We're caching the data for the lifetime of the request, because it can be slow to calculate,
	1731	+ * and it can be called multiple times per single request.
	1732	+ *
	1733	+ * We intentionally don't use object caching or any other type of persistent caching,
	1734	+ * in order to avoid complex cache invalidation on subscription addition or removal.
	1735	+ *
	1736	+ * @since 10.7
	1737	+ *
	1738	+ * @return array
	1739	+ */
	1740	+ private static function get_site_specific_features() {
	1741	+ $current_blog_id = get_current_blog_id();
	1742	+
	1743	+ if ( isset( self::$site_specific_features[ $current_blog_id ] ) ) {
	1744	+ return self::$site_specific_features[ $current_blog_id ];
	1745	+ }
	1746	+
	1747	+ if ( ! class_exists( 'Store_Product_List' ) ) {
	1748	+ require WP_CONTENT_DIR . '/admin-plugins/wpcom-billing/store-product-list.php';
	1749	+ }
	1750	+
	1751	+ $site_specific_features = Store_Product_List::get_site_specific_features_data( $current_blog_id );
	1752	+ self::$site_specific_features[ $current_blog_id ] = $site_specific_features;
	1753	+
	1754	+ return $site_specific_features;
	1755	+ }
	1756	+
	1757	+ /**
	1758	+ * Set the availability of the block as the editor
	1759	+ * is loaded.
	1760	+ *
	1761	+ * @param string $slug Slug of the block.
	1762	+ */
	1763	+ public static function set_availability_for_plan( $slug ) {
	1764	+ $slug = self::remove_extension_prefix( $slug );
	1765	+
	1766	+ if ( Jetpack_Plan::supports( $slug ) ) {
	1767	+ self::set_extension_available( $slug );
	1768	+ return;
	1769	+ }
	1770	+
	1771	+ // Check what's the minimum plan where the feature is available.
	1772	+ $plan = '';
	1773	+ $features_data = array();
	1774	+ $is_simple_site = defined( 'IS_WPCOM' ) && IS_WPCOM;
	1775	+ $is_atomic_site = ( new Host() )->is_woa_site();
	1776	+
	1777	+ if ( $is_simple_site || $is_atomic_site ) {
	1778	+ // Simple sites.
	1779	+ if ( $is_simple_site ) {
	1780	+ $features_data = self::get_site_specific_features();
	1781	+ } else {
	1782	+ // Atomic sites.
	1783	+ $option = get_option( 'jetpack_active_plan' );
	1784	+ if ( isset( $option['features'] ) ) {
	1785	+ $features_data = $option['features'];
	1786	+ }
	1787	+ }
	1788	+
	1789	+ if ( ! empty( $features_data['available'][ $slug ] ) ) {
	1790	+ $plan = $features_data['available'][ $slug ][0];
	1791	+ } elseif ( isset( self::$wpcom_minimum_plan_fallbacks[ $slug ] ) ) {
	1792	+ // Fallback for features with conditional availability (e.g., sticker-based gating)
	1793	+ // that don't appear in features_data['available'].
	1794	+ $plan = self::$wpcom_minimum_plan_fallbacks[ $slug ];
	1795	+ }
	1796	+ } else {
	1797	+ // Jetpack sites.
	1798	+ $plan = Jetpack_Plan::get_minimum_plan_for_feature( $slug );
	1799	+ }
	1800	+
	1801	+ self::set_extension_unavailable(
	1802	+ $slug,
	1803	+ 'missing_plan',
	1804	+ array(
	1805	+ 'required_feature' => $slug,
	1806	+ 'required_plan' => $plan,
	1807	+ )
	1808	+ );
	1809	+ }
	1810	+
	1811	+ /**
	1812	+ * Wraps the suplied render_callback in a function to check
	1813	+ * the availability of the block before rendering it.
	1814	+ *
	1815	+ * @param string $slug The block slug, used to check for availability.
	1816	+ * @param callable $render_callback The render_callback that will be called if the block is available.
	1817	+ */
	1818	+ public static function get_render_callback_with_availability_check( $slug, $render_callback ) {
	1819	+ return function ( $prepared_attributes, $block_content, $block ) use ( $render_callback, $slug ) {
	1820	+ $availability = self::get_cached_availability();
	1821	+ $bare_slug = self::remove_extension_prefix( $slug );
	1822	+ if ( isset( $availability[ $bare_slug ] ) && $availability[ $bare_slug ]['available'] ) {
	1823	+ return call_user_func( $render_callback, $prepared_attributes, $block_content, $block );
	1824	+ }
	1825	+
	1826	+ // A preview of the block is rendered for admins on the frontend with an upgrade nudge.
	1827	+ if ( isset( $availability[ $bare_slug ] ) ) {
	1828	+ if ( self::should_show_frontend_preview( $availability[ $bare_slug ] ) ) {
	1829	+ $block_preview = call_user_func( $render_callback, $prepared_attributes, $block_content, $block );
	1830	+
	1831	+ // If the upgrade nudge isn't already being displayed by a parent block, display the nudge.
	1832	+ if ( isset( $block->attributes['shouldDisplayFrontendBanner'] ) && $block->attributes['shouldDisplayFrontendBanner'] ) {
	1833	+ $upgrade_nudge = self::upgrade_nudge( $availability[ $bare_slug ]['details']['required_plan'] );
	1834	+ return $upgrade_nudge . $block_preview;
	1835	+ }
	1836	+
	1837	+ return $block_preview;
	1838	+ }
	1839	+ }
	1840	+
	1841	+ return null;
	1842	+ };
	1843	+ }
	1844	+
	1845	+ /**
	1846	+ * Display a message to site editors and roles above when a block is no longer supported.
	1847	+ * This is only displayed on the frontend.
	1848	+ *
	1849	+ * @since 12.3
	1850	+ *
	1851	+ * @param string $block_content The block content.
	1852	+ * @param array $block The full block, including name and attributes.
	1853	+ *
	1854	+ * @return string
	1855	+ */
	1856	+ public static function display_deprecated_block_message( $block_content, $block ) {
	1857	+ if ( isset( $block['blockName'] ) && in_array( $block['blockName'], self::$deprecated_blocks, true ) ) {
	1858	+ if ( current_user_can( 'edit_posts' ) ) {
	1859	+ $block_content = self::notice(
	1860	+ __( 'This block is no longer supported. Its contents will no longer be displayed to your visitors and as such this block should be removed.', 'jetpack' ),
	1861	+ 'warning',
	1862	+ 'jetpack-block-deprecated'
	1863	+ );
	1864	+ } else {
	1865	+ $block_content = '';
	1866	+ }
	1867	+ }
	1868	+
	1869	+ return $block_content;
	1870	+ }
	1871	+
	1872	+ /**
	1873	+ * Register block metadata collection for Jetpack blocks.
	1874	+ * This allows for more efficient block metadata loading by avoiding
	1875	+ * individual block.json file reads at runtime.
	1876	+ *
	1877	+ * Uses wp_register_block_metadata_collection() if the manifest file
	1878	+ * exists. The manifest file is auto-generated during the build process.
	1879	+ *
	1880	+ * Runs on plugins_loaded to ensure registration happens before individual
	1881	+ * blocks register themselves on init.
	1882	+ *
	1883	+ * @static
	1884	+ * @since 14.1
	1885	+ * @return void
	1886	+ */
	1887	+ public static function register_block_metadata_collection() {
	1888	+ $meta_file_path = JETPACK__PLUGIN_DIR . '_inc/blocks/blocks-manifest.php';
	1889	+ if ( file_exists( $meta_file_path ) ) {
	1890	+ wp_register_block_metadata_collection(
	1891	+ JETPACK__PLUGIN_DIR . '_inc/blocks/',
	1892	+ $meta_file_path
	1893	+ );
	1894	+ }
	1895	+ }
	1896	+
	1897	+ /**
	1898	+ * Set the JS loading strategy for a block.
	1899	+ *
	1900	+ * @param string $block_name The block name.
	1901	+ * @param array|bool $strategy The JS loading strategy.
	1902	+ *
	1903	+ * @since 15.0
	1904	+ */
	1905	+ public static function set_block_js_loading_strategy( $block_name, $strategy ) {
	1906	+ self::$block_js_loading_strategies[ $block_name ] = $strategy;
	1907	+ }
	1908	+
	1909	+ /**
	1910	+ * Get the JS loading strategy for a block.
	1911	+ *
	1912	+ * @param string $block_name The block name.
	1913	+ *
	1914	+ * @return array|bool The JS loading strategy for the block.
	1915	+ *
	1916	+ * @since 15.0
	1917	+ */
	1918	+ public static function get_block_js_loading_strategy( $block_name ) {
	1919	+ $strategy = array(
	1920	+ 'strategy' => 'defer',
	1921	+ 'in_footer' => true,
	1922	+ );
	1923	+
	1924	+ if ( isset( self::$block_js_loading_strategies[ $block_name ] ) ) {
	1925	+ $strategy = self::$block_js_loading_strategies[ $block_name ];
	1926	+ }
	1927	+
	1928	+ return $strategy;
	1929	+ }
	1930	+}
	1931	+
	1932	+if ( ( new Host() )->is_woa_site() ) {
	1933	+ /**
	1934	+ * Enable upgrade nudge for Atomic sites.
	1935	+ * This feature is false as default,
	1936	+ * so let's enable it through this filter.
	1937	+ *
	1938	+ * More doc: https://github.com/Automattic/jetpack/blob/trunk/projects/plugins/jetpack/extensions/README.md#upgrades-for-blocks
	1939	+ */
	1940	+ add_filter( 'jetpack_block_editor_enable_upgrade_nudge', '__return_true' );
	1941	+}