fixes #791 - Support server-side playlists

MediaBrowser.Server.Implementations/Library/Resolvers/PlaylistResolver.cs

@@ -0,0 +1,38 @@
+using MediaBrowser.Controller.Library;
+using MediaBrowser.Controller.Playlists;
+using System;
+using System.IO;
+
+namespace MediaBrowser.Server.Implementations.Library.Resolvers
+{
+    public class PlaylistResolver : FolderResolver<Playlist>
+    {
+        /// <summary>
+        /// Resolves the specified args.
+        /// </summary>
+        /// <param name="args">The args.</param>
+        /// <returns>BoxSet.</returns>
+        protected override Playlist Resolve(ItemResolveArgs args)
+        {
+            // It's a boxset if all of the following conditions are met:
+            // Is a Directory
+            // Contains [playlist] in the path
+            if (args.IsDirectory)
+            {
+                var filename = Path.GetFileName(args.Path);
+
+                if (string.IsNullOrEmpty(filename))
+                {
+                    return null;
+                }
+
+                if (filename.IndexOf("[playlist]", StringComparison.OrdinalIgnoreCase) != -1)
+                {
+                    return new Playlist { Path = args.Path };
+                }
+            }
+
+            return null;
+        }
+    }
+}