cloud sync updates

MediaBrowser.Controller/Sync/ISyncDataProvider.cs

@@ -0,0 +1,41 @@
+using MediaBrowser.Model.Sync;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+namespace MediaBrowser.Controller.Sync
+{
+    public interface ISyncDataProvider
+    {
+        /// <summary>
+        /// Gets the server item ids.
+        /// </summary>
+        /// <param name="target">The target.</param>
+        /// <param name="serverId">The server identifier.</param>
+        /// <returns>Task&lt;List&lt;System.String&gt;&gt;.</returns>
+        Task<List<string>> GetServerItemIds(SyncTarget target, string serverId);
+
+        /// <summary>
+        /// Adds the or update.
+        /// </summary>
+        /// <param name="target">The target.</param>
+        /// <param name="item">The item.</param>
+        /// <returns>Task.</returns>
+        Task AddOrUpdate(SyncTarget target, LocalItem item);
+
+        /// <summary>
+        /// Deletes the specified identifier.
+        /// </summary>
+        /// <param name="target">The target.</param>
+        /// <param name="id">The identifier.</param>
+        /// <returns>Task.</returns>
+        Task Delete(SyncTarget target, string id);
+
+        /// <summary>
+        /// Gets the specified identifier.
+        /// </summary>
+        /// <param name="target">The target.</param>
+        /// <param name="id">The identifier.</param>
+        /// <returns>Task&lt;LocalItem&gt;.</returns>
+        Task<LocalItem> Get(SyncTarget target, string id);
+    }
+}