Merge pull request #5301 from Bond-009/validinput

(cherry picked from commit 5860979500)
Signed-off-by: Joshua M. Boniface <joshua@boniface.me>

MediaBrowser.Model/Entities/CollectionTypeOptions.cs

@@ -0,0 +1,16 @@
+#pragma warning disable CS1591
+
+namespace MediaBrowser.Model.Entities
+{
+    public enum CollectionTypeOptions
+    {
+        Movies = 0,
+        TvShows = 1,
+        Music = 2,
+        MusicVideos = 3,
+        HomeVideos = 4,
+        BoxSets = 5,
+        Books = 6,
+        Mixed = 7
+    }
+}

MediaBrowser.Model/Entities/VirtualFolderInfo.cs

@@ -27,7 +27,7 @@ namespace MediaBrowser.Model.Entities
         /// Gets or sets the type of the collection.
         /// </summary>
         /// <value>The type of the collection.</value>
-        public string CollectionType { get; set; }
+        public CollectionTypeOptions? CollectionType { get; set; }
 
         public LibraryOptions LibraryOptions { get; set; }