) {}

	/**
	 * Starts the cleaning procedure to fix escaped, corrupted data.
	 *
	 * @since 4.1.2
	 *
	 * @return void
	 */
	public function scheduleUnescapeData() {
		aioseo()->core->cache->update( 'unslash_escaped_data_posts', time(), WEEK_IN_SECONDS );
		aioseo()->actionScheduler->scheduleSingle( 'aioseo_unslash_escaped_data_posts', 120 );
	}

	/**
	 * Unlashes corrupted escaped data in posts.
	 *
	 * @since 4.1.2
	 *
	 * @return void
	 */
	public function unslashEscapedDataPosts() {
		$postsToUnslash = apply_filters( 'aioseo_debug_unslash_escaped_posts', 200 );
		$timeStarted    = gmdate( 'Y-m-d H:i:s', aioseo()->core->cache->get( 'unslash_escaped_data_posts' ) );

		$posts = aioseo()->core->db->start( 'aioseo_posts' )
			->select( '*' )
			->whereRaw( "updated < '$timeStarted'" )
			->orderBy( 'updated ASC' )
			->limit( $postsToUnslash )
			->run()
			->result();

		if ( empty( $posts ) ) {
			aioseo()->core->cache->delete( 'unslash_escaped_data_posts' );

			return;
		}

		aioseo()->actionScheduler->scheduleSingle( 'aioseo_unslash_escaped_data_posts', 120, [], true );

		foreach ( $posts as $post ) {
			$aioseoPost = Models\Post::getPost( $post->post_id );
			foreach ( $this->getColumnsToUnslash() as $columnName ) {
				// Remove backslashes but preserve encoded unicode characters in JSON data.
				$aioseoPost->$columnName = aioseo()->helpers->pregReplace( '/\\\(?![uU][+]?[a-zA-Z0-9]{4})/', '', $post->$columnName );
			}
			$aioseoPost->images          = null;
			$aioseoPost->image_scan_date = null;
			$aioseoPost->videos          = null;
			$aioseoPost->video_scan_date = null;
			$aioseoPost->save();
		}
	}

	/**
	 * Returns a list of names of database columns that should be unslashed when cleaning the corrupted data.
	 *
	 * @since 4.1.2
	 *
	 * @return array The list of column names.
	 */
	protected function getColumnsToUnslash() {
		return [
			'title',
			'description',
			'keywords',
			'keyphrases',
			'page_analysis',
			'canonical_url',
			'og_title',
			'og_description',
			'og_image_custom_url',
			'og_image_custom_fields',
			'og_video',
			'og_custom_url',
			'og_article_section',
			'og_article_tags',
			'twitter_title',
			'twitter_description',
			'twitter_image_custom_url',
			'twitter_image_custom_fields',
			'schema_type_options',
			'local_seo',
			'options'
		];
	}

	/**
	 * Get the first available page item for the current user.
	 *
	 * @since 4.1.3
	 *
	 * @return bool|string The page slug.
	 */
	public function getFirstAvailablePageSlug() {
		foreach ( $this->pages as $slug => $page ) {
			// Ignore other pages.
			if ( $this->pageSlug !== $page['parent'] ) {
				continue;
			}

			if ( current_user_can( $this->getPageRequiredCapability( $slug ) ) ) {
				return $slug;
			}
		}

		return false;
	}

	/**
	 * Appends a message to the default WordPress "trashed" message.
	 *
	 * @since 4.1.2
	 *
	 * @param  array $messages The original messages.
	 * @return array           The modified messages.
	 */
	public function appendTrashedMessage( $messages ) {
		// Let advanced users override this.
		if ( apply_filters( 'aioseo_redirects_disable_trashed_posts_suggestions', false ) ) {
			return $messages;
		}

		if ( function_exists( 'aioseoRedirects' ) && aioseoRedirects()->options->monitor->trash ) {
			return $messages;
		}

		if ( empty( $_GET['ids'] ) ) { // phpcs:ignore HM.Security.NonceVerification.Recommended
			return $messages;
		}

		$ids = array_map( 'intval', explode( ',', wp_unslash( $_GET['ids'] ) ) ); // phpcs:ignore HM.Security.NonceVerification.Recommended, HM.Security.ValidatedSanitizedInput.InputNotSanitized

		$posts = [];
		foreach ( $ids as $id ) {
			// We need to clone the post here so we can get a real permalink for the post even if it is not published already.
			$post = aioseo()->helpers->getPost( $id );
			if ( ! is_a( $post, 'WP_Post' ) ) {
				continue;
			}

			$post->post_status = 'publish';
			$post->post_name   = sanitize_title(
				$post->post_name ? $post->post_name : $post->post_title,
				$post->ID
			);

			$posts[] = [
				'url'    => str_replace( '__trashed', '', get_permalink( $post ) ),
				'target' => '/',
				'type'   => 301
			];
		}

		if ( empty( $posts ) ) {
			return $messages;
		}

		$url         = aioseo()->slugMonitor->manualRedirectUrl( $posts );
		$addRedirect = _n( 'Add Redirect to improve SEO', 'Add Redirects to improve SEO', count( $posts ), 'all-in-one-seo-pack' );

		$messages['post']['trashed'] = $messages['post']['trashed'] . '&nbsp;<a href="' . $url . '" class="aioseo-redirects-trashed-post">' . $addRedirect . '</a> |';
		$messages['page']['trashed'] = $messages['page']['trashed'] . '&nbsp;<a href="' . $url . '" class="aioseo-redirects-trashed-post">' . $addRedirect . '</a> |';

		return $messages;
	}

	/**
	* Get the class name for the Score button.
	* Depending on the score the button should have different color.
	*
	* @since 4.0.0
	*
	* @param  int    $score The content to retrieve from the remote URL.
	* @return string        The class name for Score button.
	*/
	private function getScoreClass( $score ) {
		$scoreClass = 50 < $score ? 'score-orange' : 'score-red';

		if ( 0 === $score ) {
			$scoreClass = 'score-none';
		}

		if ( $score >= 80 ) {
			$scoreClass = 'score-green';
		}

		return $scoreClass;
	}

	/**
	 * Loads the plugin text domain.
	 *
	 * @since 4.1.4
	 *
	 * @return void
	 */
	public function loadTextDomain() {
		aioseo()->helpers->loadTextDomain( 'all-in-one-seo-pack' );
	}

	/**
	 * Add the div for the modal portal.
	 *
	 * @since 4.2.5
	 *
	 * @return void
	 */
	public function addAioseoModalPortal() {
		echo '<div id="aioseo-modal-portal"></div>';
	}

	/**
	 * Outputs the element we can mount our footer promotion standalone Vue app on.
	 * Also enqueues the assets.
	 *
	 * @since   4.3.6
	 * @version 4.4.3
	 *
	 * @return void
	 */
	public function addFooterPromotion() {
		echo wp_kses_post( '<div id="aioseo-footer-links"></div>' );

		aioseo()->core->assets->load( 'src/vue/standalone/footer-links/main.js' );
	}
}