2 files changed, 45 insertions, 8 deletions
diff --git a/MediaBrowser.Server.Implementations/Playlists/PlaylistImageProvider.cs b/MediaBrowser.Server.Implementations/Playlists/PlaylistImageProvider.cs
index bdb73ea382..5b234d0c67 100644
--- a/MediaBrowser.Server.Implementations/Playlists/PlaylistImageProvider.cs
+++ b/MediaBrowser.Server.Implementations/Playlists/PlaylistImageProvider.cs
@@ -12,6 +12,8 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
 using CommonIO;
+using MediaBrowser.Controller.Library;
+using MediaBrowser.Model.Querying;
 
 namespace MediaBrowser.Server.Implementations.Playlists
 {
@@ -65,4 +67,36 @@ namespace MediaBrowser.Server.Implementations.Playlists
             return Task.FromResult(GetFinalItems(items));
         }
     }
+
+    public class MusicGenreImageProvider : BaseDynamicImageProvider<MusicGenre>
+    {
+        private readonly ILibraryManager _libraryManager;
+
+        public MusicGenreImageProvider(IFileSystem fileSystem, IProviderManager providerManager, IApplicationPaths applicationPaths, IImageProcessor imageProcessor, ILibraryManager libraryManager) : base(fileSystem, providerManager, applicationPaths, imageProcessor)
+        {
+            _libraryManager = libraryManager;
+        }
+
+        protected override Task<List<BaseItem>> GetItemsWithImages(IHasImages item)
+        {
+            var items = _libraryManager.GetItemList(new InternalItemsQuery
+            {
+                Genres = new[] { item.Name },
+                IncludeItemTypes = new[] { typeof(MusicAlbum).Name, typeof(MusicVideo).Name, typeof(Audio).Name },
+                SortBy = new[] { ItemSortBy.Random },
+                Limit = 4,
+                Recursive = true,
+                ImageTypes = new[] { ImageType.Primary }
+
+            }).ToList();
+
+            return Task.FromResult(GetFinalItems(items));
+        }
+
+        //protected override Task<string> CreateImage(IHasImages item, List<BaseItem> itemsWithImages, string outputPathWithoutExtension, ImageType imageType, int imageIndex)
+        //{
+        //    return CreateSingleImage(itemsWithImages, outputPathWithoutExtension, ImageType.Primary);
+        //}
+    }
+
 }
diff --git a/MediaBrowser.Server.Implementations/Playlists/PlaylistManager.cs b/MediaBrowser.Server.Implementations/Playlists/PlaylistManager.cs
index 06ef05951a..ba1559bd03 100644
--- a/MediaBrowser.Server.Implementations/Playlists/PlaylistManager.cs
+++ b/MediaBrowser.Server.Implementations/Playlists/PlaylistManager.cs
@@ -158,7 +158,7 @@ namespace MediaBrowser.Server.Implementations.Playlists
             return path;
         }
 
-        private IEnumerable<BaseItem> GetPlaylistItems(IEnumerable<string> itemIds, string playlistMediaType, User user)
+        private Task<IEnumerable<BaseItem>> GetPlaylistItems(IEnumerable<string> itemIds, string playlistMediaType, User user)
         {
             var items = itemIds.Select(i => _libraryManager.GetItemById(i)).Where(i => i != null);
 
@@ -183,7 +183,7 @@ namespace MediaBrowser.Server.Implementations.Playlists
 
             var list = new List<LinkedChild>();
 
-            var items = GetPlaylistItems(itemIds, playlist.MediaType, user)
+            var items = (await GetPlaylistItems(itemIds, playlist.MediaType, user).ConfigureAwait(false))
                 .Where(i => i.SupportsAddingToPlaylist)
                 .ToList();
 
@@ -247,15 +247,18 @@ namespace MediaBrowser.Server.Implementations.Playlists
                 return;
             }
 
-            if (newIndex > oldIndex)
-            {
-                newIndex--;
-            }
-
             var item = playlist.LinkedChildren[oldIndex];
 
             playlist.LinkedChildren.Remove(item);
-            playlist.LinkedChildren.Insert(newIndex, item);
+
+            if (newIndex >= playlist.LinkedChildren.Count)
+            {
+                playlist.LinkedChildren.Add(item);
+            }
+            else
+            {
+                playlist.LinkedChildren.Insert(newIndex, item);
+            }
 
             await playlist.UpdateToRepository(ItemUpdateType.MetadataEdit, CancellationToken.None).ConfigureAwait(false);
         }