<?php //phpcs:ignore WordPress.Files.FileName.InvalidClassFileName

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/**

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* The Jetpack_RelatedPosts class.

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*

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* @package automattic/jetpack

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*/

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use Automattic\Jetpack\Assets;

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use Automattic\Jetpack\Blocks;

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use Automattic\Jetpack\Post_Media\Images;

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use Automattic\Jetpack\Status\Request;

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use Automattic\Jetpack\Sync\Settings;

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/**

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* The Jetpack_RelatedPosts class.

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*/

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class Jetpack_RelatedPosts {

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const VERSION = '20240116';

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const SHORTCODE = 'jetpack-related-posts';

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/**

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* Instance of the class.

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*

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* @var Jetpack_RelatedPosts

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*/

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private static $instance = null;

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/**

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* Instance of the raw class (?).

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*

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* @var Jetpack_RelatedPosts

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*/

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private static $instance_raw = null;

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/**

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* Creates and returns a static instance of Jetpack_RelatedPosts.

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*

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* @return Jetpack_RelatedPosts

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*/

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public static function init() {

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if ( ! self::$instance ) {

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if ( class_exists( 'WPCOM_RelatedPosts' ) && method_exists( 'WPCOM_RelatedPosts', 'init' ) ) {

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self::$instance = WPCOM_RelatedPosts::init();

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} else {

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self::$instance = new Jetpack_RelatedPosts();

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}

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}

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return self::$instance;

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}

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/**

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* Creates and returns a static instance of Jetpack_RelatedPosts_Raw.

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*

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* @return Jetpack_RelatedPosts

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*/

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public static function init_raw() {

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if ( ! self::$instance_raw ) {

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if ( class_exists( 'WPCOM_RelatedPosts' ) && method_exists( 'WPCOM_RelatedPosts', 'init_raw' ) ) {

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self::$instance_raw = WPCOM_RelatedPosts::init_raw();

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} else {

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self::$instance_raw = new Jetpack_RelatedPosts_Raw();

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}

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}

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return self::$instance_raw;

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}

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/**

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* Options.

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*

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* @var array $options

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*/

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protected $options;

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/**

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* Allow feature toggle variable.

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*

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* @var bool

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*/

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protected $allow_feature_toggle;

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/**

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* Blog character set.

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*

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* @var mixed

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*/

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protected $blog_charset;

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/**

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* Convert character set.

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*

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* @var bool

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*/

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protected $convert_charset;

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/**

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* Previous Post ID

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*

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* @var int

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*/

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protected $previous_post_id;

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/**

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* Shortcode usage.

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*

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* @var bool

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*/

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protected $found_shortcode = false;

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/**

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* Constructor for Jetpack_RelatedPosts.

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*

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* @uses get_option, add_action, apply_filters

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*/

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public function __construct() {

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$this->blog_charset = get_option( 'blog_charset' );

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$this->convert_charset = ( function_exists( 'iconv' ) && ! preg_match( '/^utf\-?8$/i', $this->blog_charset ) );

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add_action( 'admin_init', array( $this, 'action_admin_init' ) );

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add_action( 'wp', array( $this, 'action_frontend_init' ) );

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if ( ! class_exists( 'Jetpack_Media_Summary' ) ) {

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require_once JETPACK__PLUGIN_DIR . '_inc/lib/class.media-summary.php';

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}

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// Add Related Posts to the REST API Post response.

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add_action( 'rest_api_init', array( $this, 'rest_register_related_posts' ) );

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}

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/**

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* Get the blog ID.

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*

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* @return mixed current blog id.

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*/

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protected function get_blog_id() {

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return Jetpack_Options::get_option( 'id' );

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}

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/**

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* =================

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* ACTIONS & FILTERS

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* =================

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*/

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/**

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* Add a checkbox field to Settings > Reading for enabling related posts.

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*

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* @action admin_init

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* @uses add_settings_field, __, register_setting, add_action

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*/

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public function action_admin_init() {

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// Add the setting field [jetpack_relatedposts] and place it in Settings > Reading.

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add_settings_field( 'jetpack_relatedposts', '<span id="jetpack_relatedposts">' . __( 'Related posts', 'jetpack' ) . '</span>', array( $this, 'print_setting_html' ), 'reading' );

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register_setting( 'reading', 'jetpack_relatedposts', array( $this, 'parse_options' ) );

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add_action( 'admin_head', array( $this, 'print_setting_head' ) );

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if ( 'options-reading.php' === $GLOBALS['pagenow'] ) {

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// Enqueue style for live preview on the reading settings page.

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$this->enqueue_assets( false, true );

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}

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}

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/**

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* Load related posts assets if it's an eligible front end page or execute search and return JSON if it's an endpoint request.

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*

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* @global $_GET

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* @action wp

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* @uses add_shortcode, get_the_ID

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*/

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public function action_frontend_init() {

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// Add a shortcode handler that outputs nothing, this gets overridden later if we can display related content.

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add_shortcode( self::SHORTCODE, array( $this, 'get_client_rendered_html_unsupported' ) );

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if ( ! $this->enabled_for_request() ) {

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return;

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}

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if ( isset( $_GET['relatedposts'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Reading and checking if we need to generate a list of excuded posts, does not update anything on the site.

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$excludes = $this->parse_numeric_get_arg( 'relatedposts_exclude' );

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$this->action_frontend_init_ajax( $excludes );

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} else {

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if ( isset( $_GET['relatedposts_hit'] ) && isset( $_GET['relatedposts_origin'] ) && isset( $_GET['relatedposts_position'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- checking if fields are set to setup tracking, nothing is changing on the site.

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$this->previous_post_id = (int) $_GET['relatedposts_origin']; // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- fetching a previous post ID for tracking, nothing is changing on the site.

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$this->log_click( $this->previous_post_id, get_the_ID(), sanitize_text_field( wp_unslash( $_GET['relatedposts_position'] ) ) ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- logging the click for tracking, nothing is changing on the site.

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}

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$this->action_frontend_init_page();

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}

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}

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/**

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* Render insertion point.

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*

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* @since 4.2.0

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*

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* @return string

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*/

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public function get_headline() {

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$options = $this->get_options();

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if ( ! empty( $options['show_headline'] ) ) {

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$headline = sprintf(

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/** This filter is already documented in modules/sharedaddy/sharing-service.php */

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apply_filters( 'jetpack_sharing_headline_html', '<h3 class="jp-relatedposts-headline"><em>%s</em></h3>', esc_html( $options['headline'] ), 'related-posts' ),

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esc_html( $options['headline'] )

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);

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} else {

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$headline = '';

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}

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return $headline;

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}

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/**

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* Adds a target to the post content to load related posts into if a shortcode for it did not already exist.

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* Will skip adding the target if the post content contains a Related Posts block, if the 'get_the_excerpt'

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* hook is in the current filter list, or if the site is running an FSE/Site Editor theme.

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*

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* @filter the_content

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*

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* @param string $content Post content.

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*

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* @return string

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*/

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public function filter_add_target_to_dom( $content ) {

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// Do not output related posts for ActivityPub requests.

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if (

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function_exists( '\Activitypub\is_activitypub_request' )

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&& \Activitypub\is_activitypub_request()

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) {

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return $content;

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}

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if ( has_block( 'jetpack/related-posts' ) || Blocks::is_fse_theme() ) {

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return $content;

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}

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if ( ! $this->found_shortcode && ! doing_filter( 'get_the_excerpt' ) ) {

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if ( class_exists( 'Jetpack_AMP_Support' ) && Jetpack_AMP_Support::is_amp_request() ) {

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$content .= "\n" . $this->get_server_rendered_html();

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} else {

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$content .= "\n" . $this->get_client_rendered_html();

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}

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}

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return $content;

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}

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/**

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* Render static markup based on the Gutenberg block code

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*

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* @return string Rendered related posts HTML.

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*/

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public function get_server_rendered_html() {

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$rp_settings = $this->get_options();

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$block_rp_settings = array(

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'displayThumbnails' => $rp_settings['show_thumbnails'],

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'showHeadline' => $rp_settings['show_headline'],

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'displayDate' => isset( $rp_settings['show_date'] ) ? (bool) $rp_settings['show_date'] : true,

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'displayContext' => isset( $rp_settings['show_context'] ) && $rp_settings['show_context'],

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'postLayout' => isset( $rp_settings['layout'] ) ? $rp_settings['layout'] : 'grid',

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'postsToShow' => isset( $rp_settings['size'] ) ? $rp_settings['size'] : 3,

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/** This filter is already documented in modules/related-posts/jetpack-related-posts.php */

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'headline' => apply_filters( 'jetpack_relatedposts_filter_headline', $this->get_headline() ),

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'isServerRendered' => true,

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);

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return $this->render_block( $block_rp_settings, '' );

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}

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/**

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* Looks for our shortcode on the unfiltered content, this has to execute early.

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*

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* @filter the_content

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* @param string $content - content of the post.

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* @uses has_shortcode

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* @return string $content

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*/

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public function test_for_shortcode( $content ) {

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$this->found_shortcode = has_shortcode( $content, self::SHORTCODE );

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return $content;

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}

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/**

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* Returns the HTML for the related posts section.

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*

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* @uses esc_html__, apply_filters

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* @return string

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*/

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public function get_client_rendered_html() {

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if ( Settings::is_syncing() ) {

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return '';

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}

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/**

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* Filter the Related Posts headline.

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*

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* @module related-posts

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*

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* @since 3.0.0

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*

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* @param string $headline Related Posts heading.

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*/

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$headline = apply_filters( 'jetpack_relatedposts_filter_headline', $this->get_headline() );

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if ( $this->previous_post_id ) {

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$exclude = "data-exclude='{$this->previous_post_id}'";

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} else {

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$exclude = '';

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}

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return <<<EOT

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<div id='jp-relatedposts' class='jp-relatedposts' $exclude>

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$headline

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</div>

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EOT;

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}

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/**

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* Returns the HTML for the related posts section if it's running in the loop or other instances where we don't support related posts.

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*

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* @return string

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*/

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public function get_client_rendered_html_unsupported() {

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if ( Settings::is_syncing() ) {

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return '';

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}

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return "\n\n<!-- Jetpack Related Posts is not supported in this context. -->\n\n";

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}

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/**

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* ===============

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* GUTENBERG BLOCK

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* ===============

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*/

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/**

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* Echoes out items for the Gutenberg block

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*

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* @param array $related_post The post object.

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* @param array $block_attributes The block attributes.

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*/

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public function render_block_item( $related_post, $block_attributes ) {

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$instance_id = 'related-posts-item-' . uniqid();

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$label_id = $instance_id . '-label';

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$title = $related_post['title'];

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$url = $related_post['url'];

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$rel = $related_post['rel'];

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$img = '';

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$list = '';

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$item_markup = sprintf(

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'<li id="%1$s" class="jp-related-posts-i2__post">',

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esc_attr( $instance_id )

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);

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// Thumbnail

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if ( ! empty( $block_attributes['show_thumbnails'] ) && ! empty( $related_post['img']['src'] ) ) {

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$img = sprintf(

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'<img loading="lazy" class="jp-related-posts-i2__post-img" src="%1$s" alt="%2$s" %3$s/>',

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esc_url( $related_post['img']['src'] ),

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esc_attr( $related_post['img']['alt_text'] ),

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( ! empty( $related_post['img']['srcset'] ) ? 'srcset="' . esc_attr( $related_post['img']['srcset'] ) . '"' : '' )

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);

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}

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// Link

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$item_markup .= sprintf(

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'<a id="%1$s" href="%2$s" class="jp-related-posts-i2__post-link" %3$s>%4$s%5$s</a>',

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esc_attr( $label_id ),

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esc_url( $url ),

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( ! empty( $rel ) ? 'rel="' . esc_attr( $rel ) . '"' : '' ),

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esc_html( $title ),

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$img

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);

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// Date

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if ( $block_attributes['show_date'] ) {

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$list .= '<dt>' . __( 'Date', 'jetpack' ) . '</dt>';

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$list .= '<dd class="jp-related-posts-i2__post-date">';

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$list .= esc_html( $related_post['date'] );

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$list .= '</dd>';

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}

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// Author

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if ( $block_attributes['show_author'] ) {

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$list .= '<dt>' . __( 'Author', 'jetpack' ) . '</dt>';

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$list .= '<dd class="jp-related-posts-i2__post-author">';

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$list .= esc_html( $related_post['author'] );

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$list .= '</dd>';

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}

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// Context

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if ( ( $block_attributes['show_context'] ) && ! empty( $related_post['block_context'] ) ) {

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// translators: this is followed by the reason why the item is related to the current post

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$list .= '<dt>' . __( 'In relation to', 'jetpack' ) . '</dt>';

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$list .= '<dd class="jp-related-posts-i2__post-context">';

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// Note: The original 'context' value is not used when rendering the block.

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// It is still generated and available for the legacy rendering code path though.

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// See './related-posts.js' for that usage.

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$block_context = $related_post['block_context'];

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if ( ! empty( $block_context['link'] ) ) {

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$list .= sprintf(

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'<a href="%1$s">%2$s</a>',

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esc_url( $block_context['link'] ),

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esc_html( $block_context['text'] )

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);

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} else {

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$list .= esc_html( $block_context['text'] );

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}

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$list .= '</dd>';

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}

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// Metadata

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if ( ! empty( $list ) ) {

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$item_markup .= '<dl class="jp-related-posts-i2__post-defs">' . $list . '</dl>';

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}

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$item_markup .= '</li>';

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return $item_markup;

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}

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/**

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* Render the list of related posts.

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*

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* @param array $posts The posts to render into the list.

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* @param array $block_attributes Block attributes.

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* @return string

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*/

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public function render_post_list( $posts, $block_attributes ) {

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$markup = '';

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foreach ( $posts as $post ) {

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$markup .= $this->render_block_item( $post, $block_attributes );

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}

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return sprintf(

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// role="list" is required for accessibility as VoiceOver ignores unstyled lists.

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'<ul class="jp-related-posts-i2__list" role="list" data-post-count="%1$s">%2$s</ul>',

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count( $posts ),

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$markup

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);

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}

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[448] Fix | Delete

/**

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* Render the related posts markup.

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*

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* @param array $attributes Block attributes.

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* @param string $content String containing the related Posts block content.

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* @param WP_Block $block The block object.

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* @return string

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*/

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public function render_block( $attributes, $content, $block = null ) {

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if ( ! Request::is_frontend() ) {

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return $content;

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}

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$wrapper_attributes = array();

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$post_id = get_the_ID();

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$block_attributes = array(

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'headline' => isset( $attributes['headline'] ) ? $attributes['headline'] : null,

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'show_thumbnails' => isset( $attributes['displayThumbnails'] ) && $attributes['displayThumbnails'],

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'show_author' => isset( $attributes['displayAuthor'] ) ? (bool) $attributes['displayAuthor'] : false,

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'show_headline' => isset( $attributes['displayHeadline'] ) ? (bool) $attributes['displayHeadline'] : false,

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'show_date' => isset( $attributes['displayDate'] ) ? (bool) $attributes['displayDate'] : true,

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'show_context' => isset( $attributes['displayContext'] ) && $attributes['displayContext'],

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'layout' => isset( $attributes['postLayout'] ) && 'list' === $attributes['postLayout'] ? $attributes['postLayout'] : 'grid',

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'size' => ! empty( $attributes['postsToShow'] ) ? absint( $attributes['postsToShow'] ) : 3,

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);

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$excludes = $this->parse_numeric_get_arg( 'relatedposts_origin' );

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$related_posts = $this->get_for_post_id(

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$post_id,

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array(

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'size' => $block_attributes['size'],

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'exclude_post_ids' => $excludes,

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)

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);

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if ( empty( $related_posts ) ) {

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return '';

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}

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$list_markup = $this->render_post_list( $related_posts, $block_attributes );

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if ( empty( $attributes['isServerRendered'] ) ) {

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// The get_server_rendered_html() path won't register a block,

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// so only apply block supports when not server rendered.

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$wrapper_attributes = \WP_Block_Supports::get_instance()->apply_block_supports();

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}

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$headline_markup = '';

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if ( isset( $block ) ) {

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