?<h3>D¨ızenle: class-wp-rest-pattern-directory-controller.php</h3>
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/**
 * Block Pattern Directory REST API: WP_REST_Pattern_Directory_Controller class
 *
 * @package WordPress
 * @subpackage REST_API
 * @since 5.8.0
 */

/**
 * Controller which provides REST endpoint for block patterns.
 *
 * This simply proxies the endpoint at http://api.wordpress.org/patterns/1.0/. That isn&#039;t necessary for
 * functionality, but is desired for privacy. It prevents api.wordpress.org from knowing the user&#039;s IP address.
 *
 * @since 5.8.0
 *
 * @see WP_REST_Controller
 */
class WP_REST_Pattern_Directory_Controller extends WP_REST_Controller {

	/**
	 * Constructs the controller.
	 *
	 * @since 5.8.0
	 */
	public function __construct() {
		$this-&gt;namespace = &#039;wp/v2&#039;;
		$this-&gt;rest_base = &#039;pattern-directory&#039;;
	}

	/**
	 * Registers the necessary REST API routes.
	 *
	 * @since 5.8.0
	 */
	public function register_routes() {
		register_rest_route(
			$this-&gt;namespace,
			&#039;/&#039; . $this-&gt;rest_base . &#039;/patterns&#039;,
			array(
				array(
					&#039;methods&#039;             =&gt; WP_REST_Server::READABLE,
					&#039;callback&#039;            =&gt; array( $this, &#039;get_items&#039; ),
					&#039;permission_callback&#039; =&gt; array( $this, &#039;get_items_permissions_check&#039; ),
					&#039;args&#039;                =&gt; $this-&gt;get_collection_params(),
				),
				&#039;schema&#039; =&gt; array( $this, &#039;get_public_item_schema&#039; ),
			)
		);
	}

	/**
	 * Checks whether a given request has permission to view the local block pattern directory.
	 *
	 * @since 5.8.0
	 *
	 * @param WP_REST_Request $request Full details about the request.
	 * @return true|WP_Error True if the request has permission, WP_Error object otherwise.
	 */
	public function get_items_permissions_check( $request ) {
		if ( current_user_can( &#039;edit_posts&#039; ) ) {
			return true;
		}

		foreach ( get_post_types( array( &#039;show_in_rest&#039; =&gt; true ), &#039;objects&#039; ) as $post_type ) {
			if ( current_user_can( $post_type-&gt;cap-&gt;edit_posts ) ) {
				return true;
			}
		}

		return new WP_Error(
			&#039;rest_pattern_directory_cannot_view&#039;,
			__( &#039;Sorry, you are not allowed to browse the local block pattern directory.&#039; ),
			array( &#039;status&#039; =&gt; rest_authorization_required_code() )
		);
	}

	/**
	 * Search and retrieve block patterns metadata
	 *
	 * @since 5.8.0
	 * @since 6.0.0 Added &#039;slug&#039; to request.
	 * @since 6.2.0 Added &#039;per_page&#039;, &#039;page&#039;, &#039;offset&#039;, &#039;order&#039;, and &#039;orderby&#039; to request.
	 *
	 * @param WP_REST_Request $request Full details about the request.
	 * @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.
	 */
	public function get_items( $request ) {
		$valid_query_args = array(
			&#039;offset&#039;   =&gt; true,
			&#039;order&#039;    =&gt; true,
			&#039;orderby&#039;  =&gt; true,
			&#039;page&#039;     =&gt; true,
			&#039;per_page&#039; =&gt; true,
			&#039;search&#039;   =&gt; true,
			&#039;slug&#039;     =&gt; true,
		);
		$query_args       = array_intersect_key( $request-&gt;get_params(), $valid_query_args );

		$query_args[&#039;locale&#039;]             = get_user_locale();
		$query_args[&#039;wp-version&#039;]         = wp_get_wp_version();
		$query_args[&#039;pattern-categories&#039;] = isset( $request[&#039;category&#039;] ) ? $request[&#039;category&#039;] : false;
		$query_args[&#039;pattern-keywords&#039;]   = isset( $request[&#039;keyword&#039;] ) ? $request[&#039;keyword&#039;] : false;

		$query_args = array_filter( $query_args );

		$transient_key = $this-&gt;get_transient_key( $query_args );

		/*
		 * Use network-wide transient to improve performance. The locale is the only site
		 * configuration that affects the response, and it&#039;s included in the transient key.
		 */
		$raw_patterns = get_site_transient( $transient_key );

		if ( ! $raw_patterns ) {
			$api_url = &#039;http://api.wordpress.org/patterns/1.0/?&#039; . build_query( $query_args );
			if ( wp_http_supports( array( &#039;ssl&#039; ) ) ) {
				$api_url = set_url_scheme( $api_url, &#039;https&#039; );
			}

			/*
			 * Default to a short TTL, to mitigate cache stampedes on high-traffic sites.
			 * This assumes that most errors will be short-lived, e.g., packet loss that causes the
			 * first request to fail, but a follow-up one will succeed. The value should be high
			 * enough to avoid stampedes, but low enough to not interfere with users manually
			 * re-trying a failed request.
			 */
			$cache_ttl      = 5;
			$wporg_response = wp_remote_get( $api_url );
			$raw_patterns   = json_decode( wp_remote_retrieve_body( $wporg_response ) );

			if ( is_wp_error( $wporg_response ) ) {
				$raw_patterns = $wporg_response;

			} elseif ( ! is_array( $raw_patterns ) ) {
				// HTTP request succeeded, but response data is invalid.
				$raw_patterns = new WP_Error(
					&#039;pattern_api_failed&#039;,
					sprintf(
						/* translators: %s: Support forums URL. */
						__( &#039;An unexpected error occurred. Something may be wrong with WordPress.org or this server&amp;#8217;s configuration. If you continue to have problems, please try the &lt;a href=&quot;%s&quot;&gt;support forums&lt;/a&gt;.&#039; ),
						__( &#039;https://wordpress.org/support/forums/&#039; )
					),
					array(
						&#039;response&#039; =&gt; wp_remote_retrieve_body( $wporg_response ),
					)
				);

			} else {
				// Response has valid data.
				$cache_ttl = HOUR_IN_SECONDS;
			}

			set_site_transient( $transient_key, $raw_patterns, $cache_ttl );
		}

		if ( is_wp_error( $raw_patterns ) ) {
			$raw_patterns-&gt;add_data( array( &#039;status&#039; =&gt; 500 ) );

			return $raw_patterns;
		}

		if ( $request-&gt;is_method( &#039;HEAD&#039; ) ) {
			// Return early as this handler doesn&#039;t add any response headers.
			return new WP_REST_Response( array() );
		}

		$response = array();

		if ( $raw_patterns ) {
			foreach ( $raw_patterns as $pattern ) {
				$response[] = $this-&gt;prepare_response_for_collection(
					$this-&gt;prepare_item_for_response( $pattern, $request )
				);
			}
		}

		return new WP_REST_Response( $response );
	}

	/**
	 * Prepare a raw block pattern before it gets output in a REST API response.
	 *
	 * @since 5.8.0
	 * @since 5.9.0 Renamed `$raw_pattern` to `$item` to match parent class for PHP 8 named parameter support.
	 *
	 * @param object          $item    Raw pattern from api.wordpress.org, before any changes.
	 * @param WP_REST_Request $request Request object.
	 * @return WP_REST_Response
	 */
	public function prepare_item_for_response( $item, $request ) {
		// Restores the more descriptive, specific name for use within this method.
		$raw_pattern = $item;

		$prepared_pattern = array(
			&#039;id&#039;             =&gt; absint( $raw_pattern-&gt;id ),
			&#039;title&#039;          =&gt; sanitize_text_field( $raw_pattern-&gt;title-&gt;rendered ),
			&#039;content&#039;        =&gt; wp_kses_post( $raw_pattern-&gt;pattern_content ),
			&#039;categories&#039;     =&gt; array_map( &#039;sanitize_title&#039;, $raw_pattern-&gt;category_slugs ),
			&#039;keywords&#039;       =&gt; array_map( &#039;sanitize_text_field&#039;, explode( &#039;,&#039;, $raw_pattern-&gt;meta-&gt;wpop_keywords ) ),
			&#039;description&#039;    =&gt; sanitize_text_field( $raw_pattern-&gt;meta-&gt;wpop_description ),
			&#039;viewport_width&#039; =&gt; absint( $raw_pattern-&gt;meta-&gt;wpop_viewport_width ),
			&#039;block_types&#039;    =&gt; array_map( &#039;sanitize_text_field&#039;, $raw_pattern-&gt;meta-&gt;wpop_block_types ),
		);

		$prepared_pattern = $this-&gt;add_additional_fields_to_object( $prepared_pattern, $request );

		$response = new WP_REST_Response( $prepared_pattern );

		/**
		 * Filters the REST API response for a block pattern.
		 *
		 * @since 5.8.0
		 *
		 * @param WP_REST_Response $response    The response object.
		 * @param object           $raw_pattern The unprepared block pattern.
		 * @param WP_REST_Request  $request     The request object.
		 */
		return apply_filters( &#039;rest_prepare_block_pattern&#039;, $response, $raw_pattern, $request );
	}

	/**
	 * Retrieves the block pattern&#039;s schema, conforming to JSON Schema.
	 *
	 * @since 5.8.0
	 * @since 6.2.0 Added `&#039;block_types&#039;` to schema.
	 *
	 * @return array Item schema data.
	 */
	public function get_item_schema() {
		if ( $this-&gt;schema ) {
			return $this-&gt;add_additional_fields_schema( $this-&gt;schema );
		}

		$this-&gt;schema = array(
			&#039;$schema&#039;    =&gt; &#039;http://json-schema.org/draft-04/schema#&#039;,
			&#039;title&#039;      =&gt; &#039;pattern-directory-item&#039;,
			&#039;type&#039;       =&gt; &#039;object&#039;,
			&#039;properties&#039; =&gt; array(
				&#039;id&#039;             =&gt; array(
					&#039;description&#039; =&gt; __( &#039;The pattern ID.&#039; ),
					&#039;type&#039;        =&gt; &#039;integer&#039;,
					&#039;minimum&#039;     =&gt; 1,
					&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039;, &#039;embed&#039; ),
				),

				&#039;title&#039;          =&gt; array(
					&#039;description&#039; =&gt; __( &#039;The pattern title, in human readable format.&#039; ),
					&#039;type&#039;        =&gt; &#039;string&#039;,
					&#039;minLength&#039;   =&gt; 1,
					&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039;, &#039;embed&#039; ),
				),

				&#039;content&#039;        =&gt; array(
					&#039;description&#039; =&gt; __( &#039;The pattern content.&#039; ),
					&#039;type&#039;        =&gt; &#039;string&#039;,
					&#039;minLength&#039;   =&gt; 1,
					&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039;, &#039;embed&#039; ),
				),

				&#039;categories&#039;     =&gt; array(
					&#039;description&#039; =&gt; __( &quot;The pattern&#039;s category slugs.&quot; ),
					&#039;type&#039;        =&gt; &#039;array&#039;,
					&#039;uniqueItems&#039; =&gt; true,
					&#039;items&#039;       =&gt; array( &#039;type&#039; =&gt; &#039;string&#039; ),
					&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039;, &#039;embed&#039; ),
				),

				&#039;keywords&#039;       =&gt; array(
					&#039;description&#039; =&gt; __( &quot;The pattern&#039;s keywords.&quot; ),
					&#039;type&#039;        =&gt; &#039;array&#039;,
					&#039;uniqueItems&#039; =&gt; true,
					&#039;items&#039;       =&gt; array( &#039;type&#039; =&gt; &#039;string&#039; ),
					&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039;, &#039;embed&#039; ),
				),

				&#039;description&#039;    =&gt; array(
					&#039;description&#039; =&gt; __( &#039;A description of the pattern.&#039; ),
					&#039;type&#039;        =&gt; &#039;string&#039;,
					&#039;minLength&#039;   =&gt; 1,
					&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039;, &#039;embed&#039; ),
				),

				&#039;viewport_width&#039; =&gt; array(
					&#039;description&#039; =&gt; __( &#039;The preferred width of the viewport when previewing a pattern, in pixels.&#039; ),
					&#039;type&#039;        =&gt; &#039;integer&#039;,
					&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039;, &#039;embed&#039; ),
				),

				&#039;block_types&#039;    =&gt; array(
					&#039;description&#039; =&gt; __( &#039;The block types which can use this pattern.&#039; ),
					&#039;type&#039;        =&gt; &#039;array&#039;,
					&#039;uniqueItems&#039; =&gt; true,
					&#039;items&#039;       =&gt; array( &#039;type&#039; =&gt; &#039;string&#039; ),
					&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;embed&#039; ),
				),
			),
		);

		return $this-&gt;add_additional_fields_schema( $this-&gt;schema );
	}

	/**
	 * Retrieves the search parameters for the block pattern&#039;s collection.
	 *
	 * @since 5.8.0
	 * @since 6.2.0 Added &#039;per_page&#039;, &#039;page&#039;, &#039;offset&#039;, &#039;order&#039;, and &#039;orderby&#039; to request.
	 *
	 * @return array Collection parameters.
	 */
	public function get_collection_params() {
		$query_params = parent::get_collection_params();

		$query_params[&#039;per_page&#039;][&#039;default&#039;] = 100;
		$query_params[&#039;search&#039;][&#039;minLength&#039;] = 1;
		$query_params[&#039;context&#039;][&#039;default&#039;]  = &#039;view&#039;;

		$query_params[&#039;category&#039;] = array(
			&#039;description&#039; =&gt; __( &#039;Limit results to those matching a category ID.&#039; ),
			&#039;type&#039;        =&gt; &#039;integer&#039;,
			&#039;minimum&#039;     =&gt; 1,
		);

		$query_params[&#039;keyword&#039;] = array(
			&#039;description&#039; =&gt; __( &#039;Limit results to those matching a keyword ID.&#039; ),
			&#039;type&#039;        =&gt; &#039;integer&#039;,
			&#039;minimum&#039;     =&gt; 1,
		);

		$query_params[&#039;slug&#039;] = array(
			&#039;description&#039; =&gt; __( &#039;Limit results to those matching a pattern (slug).&#039; ),
			&#039;type&#039;        =&gt; &#039;array&#039;,
		);

		$query_params[&#039;offset&#039;] = array(
			&#039;description&#039; =&gt; __( &#039;Offset the result set by a specific number of items.&#039; ),
			&#039;type&#039;        =&gt; &#039;integer&#039;,
		);

		$query_params[&#039;order&#039;] = array(
			&#039;description&#039; =&gt; __( &#039;Order sort attribute ascending or descending.&#039; ),
			&#039;type&#039;        =&gt; &#039;string&#039;,
			&#039;default&#039;     =&gt; &#039;desc&#039;,
			&#039;enum&#039;        =&gt; array( &#039;asc&#039;, &#039;desc&#039; ),
		);

		$query_params[&#039;orderby&#039;] = array(
			&#039;description&#039; =&gt; __( &#039;Sort collection by post attribute.&#039; ),
			&#039;type&#039;        =&gt; &#039;string&#039;,
			&#039;default&#039;     =&gt; &#039;date&#039;,
			&#039;enum&#039;        =&gt; array(
				&#039;author&#039;,
				&#039;date&#039;,
				&#039;id&#039;,
				&#039;include&#039;,
				&#039;modified&#039;,
				&#039;parent&#039;,
				&#039;relevance&#039;,
				&#039;slug&#039;,
				&#039;include_slugs&#039;,
				&#039;title&#039;,
				&#039;favorite_count&#039;,
			),
		);

		/**
		 * Filter collection parameters for the block pattern directory controller.
		 *
		 * @since 5.8.0
		 *
		 * @param array $query_params JSON Schema-formatted collection parameters.
		 */
		return apply_filters( &#039;rest_pattern_directory_collection_params&#039;, $query_params );
	}

	/**
	 * Include a hash of the query args, so that different requests are stored in
	 * separate caches.
	 *
	 * MD5 is chosen for its speed, low-collision rate, universal availability, and to stay
	 * under the character limit for `_site_transient_timeout_{...}` keys.
	 *
	 * @link https://stackoverflow.com/questions/3665247/fastest-hash-for-non-cryptographic-uses
	 *
	 * @since 6.0.0
	 *
	 * @param array $query_args Query arguments to generate a transient key from.
	 * @return string Transient key.
	 */
	protected function get_transient_key( $query_args ) {

		if ( isset( $query_args[&#039;slug&#039;] ) ) {
			// This is an additional precaution because the &quot;sort&quot; function expects an array.
			$query_args[&#039;slug&#039;] = wp_parse_list( $query_args[&#039;slug&#039;] );

			// Empty arrays should not affect the transient key.
			if ( empty( $query_args[&#039;slug&#039;] ) ) {
				unset( $query_args[&#039;slug&#039;] );
			} else {
				// Sort the array so that the transient key doesn&#039;t depend on the order of slugs.
				sort( $query_args[&#039;slug&#039;] );
			}
		}

		return &#039;wp_remote_block_patterns_&#039; . md5( serialize( $query_args ) );
	}
}
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