Posts_Import::get_duplicate_posts( array $raw_feed,  $post_type )

	public function get_duplicate_posts( $raw_feed, $post_type ){

		if( !$raw_feed ){
			return [];
		}

		$video_ids = [];
		foreach( $raw_feed as $video ){
			$video_ids[] = $video['video_id'];
		}
		/**
		 * @var \WP_Query
		 */
		global $wpdb;
		$query = $wpdb->prepare(
			"
			SELECT {$wpdb->postmeta}.post_id, {$wpdb->postmeta}.meta_value 
			FROM {$wpdb->postmeta}
			LEFT JOIN {$wpdb->posts}
			ON {$wpdb->postmeta}.post_id = {$wpdb->posts}.ID
			WHERE
			{$wpdb->posts}.post_type LIKE '%s' 
			AND meta_value IN(" . implode( ',', $video_ids ) . ")
			",
			$post_type
		);

		$existing = $wpdb->get_results( $query );
		$_result = [];

		if( $existing ){
			foreach( $existing as $r ){
				$_result[ $r->meta_value ][] = $r->post_id;
			}
		}

		/**
		 * Filter the duplicate posts found by the plugin.
		 * When perfoming imports, the filter runs when duplicate imports are detected.
		 *
		 * @param array $_result    The post IDs found as duplicates.
		 */
		$result = apply_filters( 'vimeotheque\duplicate_posts_found', $_result );

		if( $_result !== $result ){
			Helper::debug_message(
				sprintf(
					'Detected duplicate posts override by filter "%s".',
					'vimeotheque\duplicate_posts_found'
				)
			);
		}

		return $result;
	}