felixarntz/wp-gcs-offload

<?php
/**
 * WPGCSOffload\Core\SyncAssistant class
 *
 * @package WPGCSOffload
 * @subpackage Core
 * @author Felix Arntz <felix-arntz@leaves-and-love.net>
 * @since 0.5.0
 */

namespace WPGCSOffload\Core;

use WPGCSOffload\Admin\Settings as Settings;

if ( ! defined( 'ABSPATH' ) ) {
    die();
}

if ( ! class_exists( 'WPGCSOffload\Core\SyncAssistant' ) ) {
    /**
     * This class is responsible for syncing attachments with Google Cloud Storage.
     *
     * @since 0.5.0
     */
    class SyncAssistant {
        private static $instance = null;

        public static function instance() {
            if ( null === self::$instance ) {
                self::$instance = new self();
            }

            return self::$instance;
        }

        private function __construct() {
            // empty
        }

        public function sync_addition( $data, $id ) {
            $attachment = Attachment::get( $id );
            if ( ! $attachment ) {
                return $data;
            }

            $status = $attachment->upload_to_cloud_storage( $data );

            return $data;
        }

        public function sync_deletion( $id ) {
            $attachment = Attachment::get( $id );
            if ( ! $attachment ) {
                return;
            }

            $status = $attachment->delete_from_cloud_storage( false, true );
        }

        public function delete_local_on_upload( $id, $attachment, $metadata ) {
            $status = $attachment->delete_local_file( $metadata, true );
        }

        public function store_local_on_remote_only_delete( $id, $attachment, $metadata ) {
            if ( $attachment->is_local_file() ) {
                return;
            }

            $status = $attachment->download_from_cloud_storage( $metadata );
        }

        public function store_remote_on_local_only_delete( $id, $attachment, $metadata ) {
            if ( $attachment->is_cloud_storage_file() ) {
                return;
            }

            $status = $attachment->upload_to_cloud_storage( $metadata );
        }
    }
}