WP_REST_URL_Details_Controller::parse_url_details() WordPress Method

	public function parse_url_details( $request ) {
		$url = untrailingslashit( $request['url'] );

		if ( empty( $url ) ) {
			return new WP_Error( 'rest_invalid_url', __( 'Invalid URL' ), array( 'status' => 404 ) );
		}

		// Transient per URL.
		$cache_key = $this->build_cache_key_for_url( $url );

		// Attempt to retrieve cached response.
		$cached_response = $this->get_cache( $cache_key );

		if ( ! empty( $cached_response ) ) {
			$remote_url_response = $cached_response;
		} else {
			$remote_url_response = $this->get_remote_url( $url );

			// Exit if we don't have a valid body or it's empty.
			if ( is_wp_error( $remote_url_response ) || empty( $remote_url_response ) ) {
				return $remote_url_response;
			}

			// Cache the valid response.
			$this->set_cache( $cache_key, $remote_url_response );
		}

		$html_head     = $this->get_document_head( $remote_url_response );
		$meta_elements = $this->get_meta_with_content_elements( $html_head );

		$data = $this->add_additional_fields_to_object(
			array(
				'title'       => $this->get_title( $html_head ),
				'icon'        => $this->get_icon( $html_head, $url ),
				'description' => $this->get_description( $meta_elements ),
				'image'       => $this->get_image( $meta_elements, $url ),
			),
			$request
		);

		// Wrap the data in a response object.
		$response = rest_ensure_response( $data );

		/**
		 * Filters the URL data for the response.
		 *
		 * @since 5.9.0
		 *
		 * @param WP_REST_Response $response            The response object.
		 * @param string           $url                 The requested URL.
		 * @param WP_REST_Request  $request             Request object.
		 * @param string           $remote_url_response HTTP response body from the remote URL.
		 */
		return apply_filters( 'rest_prepare_url_details', $response, $url, $request, $remote_url_response );
	}