First commit for basic naive implementation

MPDCtrl/Classes/Result.cs

@@ -0,0 +1,52 @@
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MPDCtrl.Models
+{
+    public class Result
+    {
+        public bool IsSuccess;
+        public string ErrorMessage;
+    }
+
+    public class ConnectionResult: Result
+    {
+
+    }
+
+    // generic
+    public class CommandResult : Result
+    {
+        public string ResultText;
+    }
+
+    public class CommandBinaryResult : Result
+    {
+        public int WholeSize;
+        public int ChunkSize;
+        public string Type;
+        public byte[] BinaryData;
+    }
+
+    // for commands that return playlist songs.
+    public class CommandPlaylistResult : CommandResult
+    {
+        public ObservableCollection<SongInfo> PlaylistSongs;
+    }
+
+    // for commands that return search result.
+    public class CommandSearchResult : CommandResult
+    {
+        public ObservableCollection<SongInfo> SearchResult;
+    }
+
+    // TODO: Not used?
+    public class IdleResult : CommandResult
+    {
+
+    }
+}