Add GPL modules

MediaBrowser.Controller/Collections/ICollectionManager.cs

@@ -0,0 +1,57 @@
+using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.Entities.Movies;
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+namespace MediaBrowser.Controller.Collections
+{
+    public interface ICollectionManager
+    {
+        /// <summary>
+        /// Occurs when [collection created].
+        /// </summary>
+        event EventHandler<CollectionCreatedEventArgs> CollectionCreated;
+
+        /// <summary>
+        /// Occurs when [items added to collection].
+        /// </summary>
+        event EventHandler<CollectionModifiedEventArgs> ItemsAddedToCollection;
+
+        /// <summary>
+        /// Occurs when [items removed from collection].
+        /// </summary>
+        event EventHandler<CollectionModifiedEventArgs> ItemsRemovedFromCollection;
+
+        /// <summary>
+        /// Creates the collection.
+        /// </summary>
+        /// <param name="options">The options.</param>
+        BoxSet CreateCollection(CollectionCreationOptions options);
+
+        /// <summary>
+        /// Adds to collection.
+        /// </summary>
+        /// <param name="collectionId">The collection identifier.</param>
+        /// <param name="itemIds">The item ids.</param>
+        void AddToCollection(Guid collectionId, IEnumerable<string> itemIds);
+
+        /// <summary>
+        /// Removes from collection.
+        /// </summary>
+        /// <param name="collectionId">The collection identifier.</param>
+        /// <param name="itemIds">The item ids.</param>
+        void RemoveFromCollection(Guid collectionId, IEnumerable<string> itemIds);
+
+        void AddToCollection(Guid collectionId, IEnumerable<Guid> itemIds);
+        void RemoveFromCollection(Guid collectionId, IEnumerable<Guid> itemIds);
+
+        /// <summary>
+        /// Collapses the items within box sets.
+        /// </summary>
+        /// <param name="items">The items.</param>
+        /// <param name="user">The user.</param>
+        /// <returns>IEnumerable{BaseItem}.</returns>
+        IEnumerable<BaseItem> CollapseItemsWithinBoxSets(IEnumerable<BaseItem> items, User user);
+    }
+}