[Broken Link Checker] - Siteorigin integration

blc-siteorigin-integration.php

<?php
/**
 * Plugin Name: [Broken Link Checker] - Integrate with SiteOrigin page builder.
 * Plugin URI: https://premium.wpmudev.org/
 * Description: This integration allows to find and unlink broken links for SiteOrigin builder's Text and HTML widgets.
 * Task: BLC-144
 * Author: Panos Lyrakis @ WPMUDEV
 * Author URI: https://premium.wpmudev.org/
 * License: GPLv2 or later
 */

if ( ! defined( 'ABSPATH' ) || ( defined( 'WP_CLI' ) && WP_CLI ) ) {
	return;
}

add_filter(
	'blc-parser-html-link-content',
	function ( $content ) {
		if ( false === strpos( $content, 'class="panel-layout"' ) ) {
			return $content;
		}

		return html_entity_decode( stripslashes_deep( $content ), ENT_COMPAT, 'UTF-8' );
	}
);

add_action(
	'wp_ajax_blc_unlink',
	function () {
		if ( ! current_user_can( 'edit_others_posts' ) || ! check_ajax_referer( 'blc_unlink', false, false ) ) {
			die(
				json_encode(
					array(
						'error' => "You're not allowed to do that!",
					)
				)
			);
		}

		if ( isset( $_POST['link_id'] ) ) {
			$link_id = intval( $_POST['link_id'] );
			$link    = new blcLink( $link_id );

			if ( ! $link->valid() ) {
				// Just return. The link was probably deleted by original ajax callback.
				return;
			}

			global $wpdb;
			// $broken_url = str_replace( '/', '\/', htmlentities( addslashes( $link->url ) ) );
			$_instances = blc_get_instances( array( $link_id ) );

			if ( ! isset( $_instances[ $link_id ] ) ) {
				return;
			}

			foreach ( $_instances[ $link_id ] as $instance ) {
				$parser      = $instance->get_parser();
				$post_id     = (int) $instance->container_id;
				$post        = get_post( $post_id );
				$panels_data = get_post_meta( $post_id, 'panels_data', true );

				if ( ! empty( $panels_data ) ) {
					if ( isset( $panels_data['widgets'] ) && ! empty( $panels_data['widgets'] ) ) {
						foreach ( $panels_data['widgets'] as $widget_key => $widget ) {
							if ( isset( $widget['content'] ) ) {
								$panels_data['widgets'][ $widget_key ]['content'] = $parser->unlink( $widget['content'], $link->url, $link->url );
							}

							if ( isset( $widget['text'] ) ) {
								$panels_data['widgets'][ $widget_key ]['text'] = $parser->unlink( $widget['text'], $link->url, $link->url );
							}
						}
					}

					if ( update_post_meta( $post_id, 'panels_data', $panels_data ) ) {
						// $link->forget();
						$wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->prefix}blc_instances WHERE link_id=%d", $link_id ) );
						$wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->prefix}blc_links WHERE link_id=%d", $link_id ) );
					}

					$response = array(
						'cnt_okay'  => 2,
						'cnt_error' => 0,
						'errors'    => array(),
					);

					die( json_encode( $response ) );
				}
			}
		}
		return;
	}
);