Rewrote most of the library

.gitignore

@@ -16,3 +16,7 @@
 /src/MpcNET/MpcNET.csproj.DotSettings
 /.vs
 *.user
+/Sources/.vs/MpcNET/v15
+/Sources/MpcNET/bin/Debug/netstandard2.0
+/Sources/MpcNET/obj
+/Sources/MpcNET.Test/obj

Sources/MpcNET/CommandFactory.cs

@@ -0,0 +1,74 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="CommandFactory.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+
+namespace MpcNET
+{
+    using MpcNET.Commands;
+
+    /// <summary>
+    /// Provides MPD commands.
+    /// </summary>
+    /// <seealso cref="MpcNET.ICommandFactory" />
+    public class CommandFactory : ICommandFactory
+    {
+        /// <summary>
+        /// Gets the status command factory.
+        /// </summary>
+        /// <value>
+        /// The status.
+        /// </value>
+        public IStatusCommandFactory Status { get; } = new StatusCommandFactory();
+
+        /// <summary>
+        /// Gets the database command factory.
+        /// </summary>
+        /// <value>
+        /// The database.
+        /// </value>
+        public IDatabaseCommandFactory Database { get; } = new DatabaseCommandFactory();
+
+        /// <summary>
+        /// Gets the reflection command factory.
+        /// </summary>
+        /// <value>
+        /// The reflection.
+        /// </value>
+        public IReflectionCommandFactory Reflection { get; } = new ReflectionCommandFactory();
+
+        /// <summary>
+        /// Gets the stored playlist command factory.
+        /// </summary>
+        /// <value>
+        /// The stored playlist.
+        /// </value>
+        public IStoredPlaylistCommandFactory StoredPlaylist { get; } = new StoredPlaylistCommandFactory();
+
+        /// <summary>
+        /// Gets the current playlist command factory.
+        /// </summary>
+        /// <value>
+        /// The current playlist.
+        /// </value>
+        public ICurrentPlaylistCommandFactory CurrentPlaylist { get; } = new CurrentPlaylistCommandFactory();
+
+        /// <summary>
+        /// Gets the playback command factory.
+        /// </summary>
+        /// <value>
+        /// The playback.
+        /// </value>
+        public IPlaybackCommandFactory Playback { get; } = new PlaybackCommandFactory();
+
+        /// <summary>
+        /// Gets the output command factory.
+        /// </summary>
+        /// <value>
+        /// The output.
+        /// </value>
+        public IOutputCommandFactory Output { get; } = new OutputCommandFactory();
+    }
+}

Sources/MpcNET/Commands/CurrentPlaylistCommandFactory.cs

@@ -0,0 +1,95 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="CurrentPlaylistCommandFactory.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands
+{
+    using System.Collections.Generic;
+    using MpcNET.Commands.Playlist;
+    using MpcNET.Types;
+
+    /// <summary>
+    /// https://www.musicpd.org/doc/protocol/queue.html
+    /// </summary>
+    public class CurrentPlaylistCommandFactory : ICurrentPlaylistCommandFactory
+    {
+        /// <summary>
+        /// Command: add
+        /// </summary>
+        /// <param name="directory">The directory.</param>
+        /// <returns>An <see cref="AddCommand"/>.</returns>
+        public IMpcCommand<string> AddDirectory(string directory)
+        {
+            return new AddCommand(directory);
+        }
+
+        /// <summary>
+        /// Command: addid
+        /// </summary>
+        /// <param name="songPath">The song path.</param>
+        /// <returns>An <see cref="AddIdCommand"/>.</returns>
+        public IMpcCommand<string> AddSong(string songPath)
+        {
+            return new AddIdCommand(songPath);
+        }
+
+        /// <summary>
+        /// Command: clear
+        /// </summary>
+        /// <returns>An <see cref="ClearCommand"/>.</returns>
+        public IMpcCommand<string> Clear()
+        {
+            return new ClearCommand();
+        }
+
+        /// <summary>
+        /// Command: playlist
+        /// </summary>
+        /// <returns>A <see cref="PlaylistCommand"/>.</returns>
+        public IMpcCommand<IEnumerable<IMpdFile>> GetAllSongsInfo()
+        {
+            return new PlaylistCommand();
+        }
+
+        /// <summary>
+        /// Command: delete
+        /// </summary>
+        /// <param name="position">The position.</param>
+        /// <returns>A <see cref="DeleteCommand" />.</returns>
+        public IMpcCommand<string> RemoveSongByPosition(int position)
+        {
+            return new DeleteCommand(position);
+        }
+
+        /// <summary>
+        /// Command: deleteid
+        /// </summary>
+        /// <param name="songId">The song identifier.</param>
+        /// <returns>A <see cref="DeleteIdCommand"/>.</returns>
+        public IMpcCommand<string> RemoveSongById(int songId)
+        {
+            return new DeleteIdCommand(songId);
+        }
+
+        /// <summary>
+        /// Command: playlistid
+        /// </summary>
+        /// <param name="songId">The song identifier.</param>
+        /// <returns>A <see cref="PlaylistIdCommand" />.</returns>
+        public IMpcCommand<IEnumerable<IMpdFile>> GetSongMetadata(int songId)
+        {
+            return new PlaylistIdCommand(songId);
+        }
+
+        /// <summary>
+        /// Command: playlistinfo
+        /// </summary>
+        /// <returns>A <see cref="PlaylistInfoCommand" />.</returns>
+        public IMpcCommand<IEnumerable<IMpdFile>> GetAllSongMetadata()
+        {
+            return new PlaylistInfoCommand();
+        }
+    }
+}

Sources/MpcNET/Commands/Database/FindCommand.cs

@@ -0,0 +1,36 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="FindCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands.Database
+{
+    using System.Collections.Generic;
+    using MpcNET.Tags;
+    using MpcNET.Types;
+
+    /// <summary>
+    /// Finds songs in the database that is exactly "searchText".
+    /// </summary>
+    internal class FindCommand : IMpcCommand<IEnumerable<IMpdFile>>
+    {
+        private readonly ITag tag;
+        private readonly string searchText;
+
+        public FindCommand(ITag tag, string searchText)
+        {
+            this.tag = tag;
+            this.searchText = searchText;
+        }
+
+        public string Serialize() => string.Join(" ", "find", this.tag.Value, this.searchText);
+
+        public IEnumerable<IMpdFile> Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            return MpdFile.CreateList(response);
+        }
+    }
+
+    // TODO: rescan
+}

Sources/MpcNET/Commands/Database/ListAllCommand.cs

@@ -1,18 +1,23 @@
-using System.Collections.Generic;
-using System.Linq;
-using MpcNET.Types;
-
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="ListAllCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
 namespace MpcNET.Commands.Database
 {
+    using System.Collections.Generic;
+    using System.Linq;
+    using MpcNET.Types;
 
     /// <summary>
     /// Lists all songs and directories in URI.
     /// </summary>
     internal class ListAllCommand : IMpcCommand<IEnumerable<MpdDirectory>>
     {
-        public string Value => "listall";
+        public string Serialize() => "listall";
 
-        public IEnumerable<MpdDirectory> FormatResponse(IList<KeyValuePair<string, string>> response)
+        public IEnumerable<MpdDirectory> Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
         {
             var rootDirectory = new List<MpdDirectory>
             {

Sources/MpcNET/Commands/Database/ListCommand.cs

@@ -0,0 +1,31 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="ListCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands.Database
+{
+    using System.Collections.Generic;
+    using MpcNET.Tags;
+
+    internal class ListCommand : IMpcCommand<string>
+    {
+        private readonly ITag tag;
+
+        public ListCommand(ITag tag)
+        {
+            this.tag = tag;
+        }
+
+        public string Serialize() => string.Join(" ", "list", this.tag);
+
+        public string Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            // TODO:
+            return response.ToString();
+        }
+    }
+
+    // TODO: rescan
+}

Sources/MpcNET/Commands/Database/UpdateCommand.cs

@@ -0,0 +1,46 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="UpdateCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands.Database
+{
+    using System.Collections.Generic;
+
+    internal class UpdateCommand : IMpcCommand<string>
+    {
+        private readonly string uri;
+
+        public UpdateCommand(string uri)
+        {
+            this.uri = uri;
+        }
+
+        public string Serialize()
+        {
+            if (string.IsNullOrEmpty(this.uri))
+            {
+                return "update";
+            }
+
+            var newUri = this.uri;
+            if (this.uri.StartsWith(@""""))
+            {
+                newUri = @"""" + this.uri;
+            }
+
+            if (this.uri.EndsWith(@""""))
+            {
+                newUri = this.uri + @"""";
+            }
+
+            return string.Join(" ", "update", newUri);
+        }
+
+        public string Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            return string.Join(", ", response);
+        }
+    }
+}

Sources/MpcNET/Commands/DatabaseCommandFactory.cs

@@ -0,0 +1,52 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="DatabaseCommandFactory.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands
+{
+    using System.Collections.Generic;
+    using MpcNET.Commands.Database;
+    using MpcNET.Tags;
+    using MpcNET.Types;
+
+    /// <summary>
+    /// https://www.musicpd.org/doc/protocol/database.html
+    /// </summary>
+    public class DatabaseCommandFactory : IDatabaseCommandFactory
+    {
+        /// <summary>
+        /// Finds the specified tag.
+        /// </summary>
+        /// <param name="tag">The tag.</param>
+        /// <param name="searchText">The search text.</param>
+        /// <returns>An <see cref="FindCommand"/>.</returns>
+        public IMpcCommand<IEnumerable<IMpdFile>> Find(ITag tag, string searchText)
+        {
+            return new FindCommand(tag, searchText);
+        }
+
+        /// <summary>
+        /// Updates the specified URI.
+        /// </summary>
+        /// <param name="uri">The URI.</param>
+        /// <returns>An <see cref="UpdateCommand"/>.</returns>
+        public IMpcCommand<string> Update(string uri = null)
+        {
+            return new UpdateCommand(uri);
+        }
+
+        /// <summary>
+        /// Lists all.
+        /// </summary>
+        /// <returns>A <see cref="ListAllCommand"/>.</returns>
+        public IMpcCommand<IEnumerable<MpdDirectory>> ListAll()
+        {
+            return new ListAllCommand();
+        }
+
+        // TODO: count
+        // TODO: rescan
+    }
+}

Sources/MpcNET/Commands/ICurrentPlaylistCommandFactory.cs

@@ -0,0 +1,71 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="ICurrentPlaylistCommandFactory.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands
+{
+    using System.Collections.Generic;
+    using MpcNET.Commands.Playlist;
+    using MpcNET.Types;
+
+    /// <summary>
+    /// Provides current playlist commands.
+    /// </summary>
+    public interface ICurrentPlaylistCommandFactory
+    {
+        /// <summary>
+        /// Command: add
+        /// </summary>
+        /// <param name="directory">The directory.</param>
+        /// <returns>An <see cref="AddCommand"/>.</returns>
+        IMpcCommand<string> AddDirectory(string directory);
+
+        /// <summary>
+        /// Command: addid
+        /// </summary>
+        /// <param name="songPath">The song path.</param>
+        /// <returns>An <see cref="AddIdCommand"/>.</returns>
+        IMpcCommand<string> AddSong(string songPath);
+
+        /// <summary>
+        /// Command: clear
+        /// </summary>
+        /// <returns>An <see cref="ClearCommand"/>.</returns>
+        IMpcCommand<string> Clear();
+
+        /// <summary>
+        /// Command: playlist
+        /// </summary>
+        /// <returns>A <see cref="PlaylistCommand"/>.</returns>
+        IMpcCommand<IEnumerable<IMpdFile>> GetAllSongsInfo();
+
+        /// <summary>
+        /// Command: delete
+        /// </summary>
+        /// <param name="position">The position.</param>
+        /// <returns>A <see cref="DeleteCommand" />.</returns>
+        IMpcCommand<string> RemoveSongByPosition(int position);
+
+        /// <summary>
+        /// Command: deleteid
+        /// </summary>
+        /// <param name="songId">The song identifier.</param>
+        /// <returns>A <see cref="DeleteIdCommand"/>.</returns>
+        IMpcCommand<string> RemoveSongById(int songId);
+
+        /// <summary>
+        /// Command: playlistid
+        /// </summary>
+        /// <param name="songId">The song identifier.</param>
+        /// <returns>A <see cref="PlaylistIdCommand" />.</returns>
+        IMpcCommand<IEnumerable<IMpdFile>> GetSongMetadata(int songId);
+
+        /// <summary>
+        /// Command: playlistinfo
+        /// </summary>
+        /// <returns>A <see cref="PlaylistInfoCommand" />.</returns>
+        IMpcCommand<IEnumerable<IMpdFile>> GetAllSongMetadata();
+    }
+}

Sources/MpcNET/Commands/IDatabaseCommandFactory.cs

@@ -0,0 +1,40 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="IDatabaseCommandFactory.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands
+{
+    using System.Collections.Generic;
+    using MpcNET.Commands.Database;
+    using MpcNET.Tags;
+    using MpcNET.Types;
+
+    /// <summary>
+    /// Provides database commands.
+    /// </summary>
+    public interface IDatabaseCommandFactory
+    {
+        /// <summary>
+        /// Finds the specified tag.
+        /// </summary>
+        /// <param name="tag">The tag.</param>
+        /// <param name="searchText">The search text.</param>
+        /// <returns>An <see cref="FindCommand"/>.</returns>
+        IMpcCommand<IEnumerable<IMpdFile>> Find(ITag tag, string searchText);
+
+        /// <summary>
+        /// Updates the specified URI.
+        /// </summary>
+        /// <param name="uri">The URI.</param>
+        /// <returns>An <see cref="UpdateCommand"/>.</returns>
+        IMpcCommand<string> Update(string uri = null);
+
+        /// <summary>
+        /// Lists all.
+        /// </summary>
+        /// <returns>A <see cref="ListAllCommand"/>.</returns>
+        IMpcCommand<IEnumerable<MpdDirectory>> ListAll();
+    }
+}

Sources/MpcNET/Commands/IOutputCommandFactory.cs

@@ -0,0 +1,45 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="IOutputCommandFactory.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands
+{
+    using System.Collections.Generic;
+    using MpcNET.Commands.Output;
+    using MpcNET.Types;
+
+    /// <summary>
+    /// Provides output commands.
+    /// </summary>
+    public interface IOutputCommandFactory
+    {
+        /// <summary>
+        /// Outputses this instance.
+        /// </summary>
+        /// <returns>An <see cref="OutputsCommand"/>.</returns>
+        IMpcCommand<IEnumerable<MpdOutput>> Outputs();
+
+        /// <summary>
+        /// Disables the output.
+        /// </summary>
+        /// <param name="outputId">The output identifier.</param>
+        /// <returns>A <see cref="DisableOutputCommand"/>.</returns>
+        IMpcCommand<string> DisableOutput(int outputId);
+
+        /// <summary>
+        /// Enables the output.
+        /// </summary>
+        /// <param name="outputId">The output identifier.</param>
+        /// <returns>A <see cref="EnableOutputCommand"/>.</returns>
+        IMpcCommand<string> EnableOutput(int outputId);
+
+        /// <summary>
+        /// Toggles the output.
+        /// </summary>
+        /// <param name="outputId">The output identifier.</param>
+        /// <returns>A <see cref="ToggleOutputCommand"/>.</returns>
+        IMpcCommand<string> ToggleOutput(int outputId);
+    }
+}

Sources/MpcNET/Commands/IPlaybackCommandFactory.cs

@@ -0,0 +1,71 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="IPlaybackCommandFactory.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands
+{
+    using MpcNET.Commands.Playback;
+    using MpcNET.Types;
+
+    /// <summary>
+    /// Provides playback commands.
+    /// </summary>
+    public interface IPlaybackCommandFactory
+    {
+        /// <summary>
+        /// Get a next command.
+        /// </summary>
+        /// <returns>A <see cref="NextCommand"/>.</returns>
+        IMpcCommand<string> Next();
+
+        /// <summary>
+        /// Get a previous command.
+        /// </summary>
+        /// <returns>A <see cref="StopCommand"/>.</returns>
+        IMpcCommand<string> Previous();
+
+        /// <summary>
+        /// Gets a play-pause command.
+        /// </summary>
+        /// <returns>A <see cref="PlayPauseCommand"/>.</returns>
+        IMpcCommand<string> PlayPause();
+
+        /// <summary>
+        /// Gets a play command.
+        /// </summary>
+        /// <param name="mpdFile">The MPD file.</param>
+        /// <returns>A <see cref="PlayCommand"/>.</returns>
+        IMpcCommand<string> Play(IMpdFile mpdFile);
+
+        /// <summary>
+        /// Gets a play command.
+        /// </summary>
+        /// <param name="position">The position.</param>
+        /// <returns>A <see cref="PlayCommand"/>.</returns>
+        IMpcCommand<string> Play(int position);
+
+        /// <summary>
+        /// Gets a play command.
+        /// </summary>
+        /// <param name="id">The identifier.</param>
+        /// <returns>A <see cref="PlayCommand"/>.</returns>
+        IMpcCommand<string> PlayId(int id);
+
+        /// <summary>
+        /// Gets a stop command.
+        /// </summary>
+        /// <returns>A <see cref="StopCommand"/>.</returns>
+        IMpcCommand<string> Stop();
+
+        /// <summary>
+        /// Sets the volume.
+        /// </summary>
+        /// <param name="volume">The volume.</param>
+        /// <returns>
+        /// A <see cref="SetVolumeCommand" />.
+        /// </returns>
+        IMpcCommand<string> SetVolume(byte volume);
+    }
+}

Sources/MpcNET/Commands/IReflectionCommandFactory.cs

@@ -0,0 +1,42 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="IReflectionCommandFactory.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands
+{
+    using System.Collections.Generic;
+    using MpcNET.Commands.Reflection;
+    using MpcNET.Types;
+
+    /// <summary>
+    /// Provides reflection commands.
+    /// </summary>
+    public interface IReflectionCommandFactory
+    {
+        /// <summary>
+        /// Gets a commands command.
+        /// </summary>
+        /// <returns>A <see cref="CommandsCommand"/>.</returns>
+        IMpcCommand<IEnumerable<string>> Commands();
+
+        /// <summary>
+        /// Gets a tag types command.
+        /// </summary>
+        /// <returns>A <see cref="TagTypesCommand"/>.</returns>
+        IMpcCommand<IEnumerable<string>> TagTypes();
+
+        /// <summary>
+        /// Gets URL handlers command.
+        /// </summary>
+        /// <returns>A <see cref="UrlHandlersCommand"/>.</returns>
+        IMpcCommand<IEnumerable<string>> UrlHandlers();
+
+        /// <summary>
+        /// Gets a decoders command.
+        /// </summary>
+        /// <returns>A <see cref="DecodersCommand"/>.</returns>
+        IMpcCommand<IEnumerable<MpdDecoderPlugin>> Decoders();
+    }
+}

Sources/MpcNET/Commands/IStatusCommandFactory.cs

@@ -0,0 +1,29 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="IStatusCommandFactory.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands
+{
+    using MpcNET.Commands.Status;
+    using MpcNET.Types;
+
+    /// <summary>
+    /// Provides status commands.
+    /// </summary>
+    public interface IStatusCommandFactory
+    {
+        /// <summary>
+        /// Gets a status command.
+        /// </summary>
+        /// <returns>A <see cref="StatusCommand"/>.</returns>
+        IMpcCommand<MpdStatus> GetStatus();
+
+        /// <summary>
+        /// Gets a current song command.
+        /// </summary>
+        /// <returns>A <see cref="CurrentSongCommand"/>.</returns>
+        IMpcCommand<IMpdFile> GetCurrentSong();
+    }
+}

Sources/MpcNET/Commands/IStoredPlaylistCommandFactory.cs

@@ -0,0 +1,45 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="IStoredPlaylistCommandFactory.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands
+{
+    using System.Collections.Generic;
+    using MpcNET.Commands.Playlist;
+    using MpcNET.Types;
+
+    /// <summary>
+    /// Provides stored playlist commands.
+    /// </summary>
+    public interface IStoredPlaylistCommandFactory
+    {
+        /// <summary>
+        /// Command: load
+        /// </summary>
+        /// <param name="playlistName">Name of the playlist.</param>
+        /// <returns>A <see cref="LoadCommand" />.</returns>
+        IMpcCommand<string> Load(string playlistName);
+
+        /// <summary>
+        /// Command: listplaylist
+        /// </summary>
+        /// <param name="playlistName">Name of the playlist.</param>
+        /// <returns>A <see cref="ListPlaylistCommand" />.</returns>
+        IMpcCommand<IEnumerable<IMpdFilePath>> GetContent(string playlistName);
+
+        /// <summary>
+        /// Command: listplaylistinfo
+        /// </summary>
+        /// <param name="playlistName">Name of the playlist.</param>
+        /// <returns>A <see cref="ListPlaylistInfoCommand" />.</returns>
+        IMpcCommand<IEnumerable<IMpdFile>> GetContentWithMetadata(string playlistName);
+
+        /// <summary>
+        /// Command: listplaylists
+        /// </summary>
+        /// <returns>A <see cref="ListPlaylistsCommand" />.</returns>
+        IMpcCommand<IEnumerable<MpdPlaylist>> GetAll();
+    }
+}

Sources/MpcNET/Commands/Output/DisableOutputCommand.cs

@@ -0,0 +1,31 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="DisableOutputCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands.Output
+{
+    using System.Collections.Generic;
+
+    /// <summary>
+    /// Turns an output off.
+    /// </summary>
+    internal class DisableOutputCommand : IMpcCommand<string>
+    {
+        private readonly int outputId;
+
+        public DisableOutputCommand(int outputId)
+        {
+            this.outputId = outputId;
+        }
+
+        public string Serialize() => string.Join(" ", "disableoutput", this.outputId);
+
+        public string Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            // Response should be empty.
+            return string.Join(", ", response);
+        }
+    }
+}

Sources/MpcNET/Commands/Output/EnableOutputCommand.cs

@@ -0,0 +1,31 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="EnableOutputCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands.Output
+{
+    using System.Collections.Generic;
+
+    /// <summary>
+    /// Turns an output on.
+    /// </summary>
+    internal class EnableOutputCommand : IMpcCommand<string>
+    {
+        private readonly int outputId;
+
+        public EnableOutputCommand(int outputId)
+        {
+            this.outputId = outputId;
+        }
+
+        public string Serialize() => string.Join(" ", "enableoutput", this.outputId);
+
+        public string Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            // Response should be empty.
+            return string.Join(", ", response);
+        }
+    }
+}

Sources/MpcNET/Commands/Output/OutputsCommand.cs

@@ -0,0 +1,35 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="OutputsCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands.Output
+{
+    using System.Collections.Generic;
+    using MpcNET.Types;
+
+    /// <summary>
+    /// Shows information about all outputs.
+    /// </summary>
+    internal class OutputsCommand : IMpcCommand<IEnumerable<MpdOutput>>
+    {
+        public string Serialize() => "outputs";
+
+        public IEnumerable<MpdOutput> Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            var result = new List<MpdOutput>();
+
+            for (var i = 0; i < response.Count; i += 3)
+            {
+                var outputId = int.Parse(response[i].Value);
+                var outputName = response[i + 1].Value;
+                var outputEnabled = response[i + 2].Value == "1";
+
+                result.Add(new MpdOutput(outputId, outputName, outputEnabled));
+            }
+
+            return result;
+        }
+    }
+}

Sources/MpcNET/Commands/Output/ToggleOutputCommand.cs

@@ -0,0 +1,30 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="ToggleOutputCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands.Output
+{
+    using System.Collections.Generic;
+
+    /// <summary>
+    /// Turns an output on or off, depending on the current state.
+    /// </summary>
+    internal class ToggleOutputCommand : IMpcCommand<string>
+    {
+        private readonly int outputId;
+
+        public ToggleOutputCommand(int outputId)
+        {
+            this.outputId = outputId;
+        }
+
+        public string Serialize() => string.Join(" ", "toggleoutput", this.outputId);
+
+        public string Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            return string.Join(", ", response);
+        }
+    }
+}

Sources/MpcNET/Commands/OutputCommandFactory.cs

@@ -0,0 +1,57 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="OutputCommandFactory.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands
+{
+    using System.Collections.Generic;
+    using MpcNET.Commands.Output;
+    using MpcNET.Types;
+
+    /// <summary>
+    /// https://www.musicpd.org/doc/protocol/output_commands.html
+    /// </summary>
+    public class OutputCommandFactory : IOutputCommandFactory
+    {
+        /// <summary>
+        /// Outputses this instance.
+        /// </summary>
+        /// <returns>An <see cref="OutputsCommand"/>.</returns>
+        public IMpcCommand<IEnumerable<MpdOutput>> Outputs()
+        {
+            return new OutputsCommand();
+        }
+
+        /// <summary>
+        /// Disables the output.
+        /// </summary>
+        /// <param name="outputId">The output identifier.</param>
+        /// <returns>A <see cref="DisableOutputCommand"/>.</returns>
+        public IMpcCommand<string> DisableOutput(int outputId)
+        {
+            return new DisableOutputCommand(outputId);
+        }
+
+        /// <summary>
+        /// Enables the output.
+        /// </summary>
+        /// <param name="outputId">The output identifier.</param>
+        /// <returns>A <see cref="EnableOutputCommand"/>.</returns>
+        public IMpcCommand<string> EnableOutput(int outputId)
+        {
+            return new EnableOutputCommand(outputId);
+        }
+
+        /// <summary>
+        /// Toggles the output.
+        /// </summary>
+        /// <param name="outputId">The output identifier.</param>
+        /// <returns>A <see cref="ToggleOutputCommand"/>.</returns>
+        public IMpcCommand<string> ToggleOutput(int outputId)
+        {
+            return new ToggleOutputCommand(outputId);
+        }
+    }
+}

Sources/MpcNET/Commands/Playback/NextCommand.cs

@@ -0,0 +1,20 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="NextCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands.Playback
+{
+    using System.Collections.Generic;
+
+    internal class NextCommand : IMpcCommand<string>
+    {
+        public string Serialize() => string.Join(" ", "next");
+
+        public string Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            return string.Join(", ", response);
+        }
+    }
+}

Sources/MpcNET/Commands/Playback/PlayCommand.cs

@@ -0,0 +1,43 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="PlayCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands.Playback
+{
+    using System;
+    using System.Collections.Generic;
+    using MpcNET.Types;
+
+    internal class PlayCommand : IMpcCommand<string>
+    {
+        private readonly int position;
+        private readonly int id;
+
+        public PlayCommand(int position, int id)
+        {
+            this.position = position;
+            this.id = id;
+            if (this.position == MpdFile.NoPos && this.id == MpdFile.NoId)
+            {
+                throw new ArgumentException("PlayCommand requires Id or Position");
+            }
+        }
+
+        public string Serialize()
+        {
+            if (this.id != MpdFile.NoId)
+            {
+                return string.Join(" ", "playid", this.id);
+            }
+
+            return string.Join(" ", "play", this.position);
+        }
+
+        public string Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            return string.Join(", ", response);
+        }
+    }
+}

Sources/MpcNET/Commands/Playback/PlayPauseCommand.cs

@@ -0,0 +1,20 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="PlayPauseCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands.Playback
+{
+    using System.Collections.Generic;
+
+    internal class PlayPauseCommand : IMpcCommand<string>
+    {
+        public string Serialize() => string.Join(" ", "pause");
+
+        public string Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            return string.Join(", ", response);
+        }
+    }
+}

Sources/MpcNET/Commands/Playback/PreviousCommand.cs

@@ -0,0 +1,20 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="PreviousCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands.Playback
+{
+    using System.Collections.Generic;
+
+    internal class PreviousCommand : IMpcCommand<string>
+    {
+        public string Serialize() => string.Join(" ", "previous");
+
+        public string Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            return string.Join(", ", response);
+        }
+    }
+}

Sources/MpcNET/Commands/Playback/SetVolumeCommand.cs

@@ -0,0 +1,31 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="SetVolumeCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+
+namespace MpcNET.Commands.Playback
+{
+    using System.Collections.Generic;
+
+    internal class SetVolumeCommand : IMpcCommand<string>
+    {
+        private readonly byte volume;
+
+        public SetVolumeCommand(byte volume)
+        {
+            this.volume = volume;
+        }
+
+        public string Serialize()
+        {
+            return string.Join(" ", "setvol", this.volume);
+        }
+
+        public string Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            return string.Join(", ", response);
+        }
+    }
+}

Sources/MpcNET/Commands/Playback/StopCommand.cs

@@ -0,0 +1,20 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="StopCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands.Playback
+{
+    using System.Collections.Generic;
+
+    internal class StopCommand : IMpcCommand<string>
+    {
+        public string Serialize() => string.Join(" ", "stop");
+
+        public string Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            return string.Join(", ", response);
+        }
+    }
+}

Sources/MpcNET/Commands/PlaybackCommandFactory.cs

@@ -0,0 +1,95 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="PlaybackCommandFactory.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands
+{
+    using MpcNET.Commands.Playback;
+    using MpcNET.Types;
+
+    /// <summary>
+    /// https://www.musicpd.org/doc/protocol/playback_commands.html
+    /// </summary>
+    public class PlaybackCommandFactory : IPlaybackCommandFactory
+    {
+        /// <summary>
+        /// Get a next command.
+        /// </summary>
+        /// <returns>A <see cref="NextCommand"/>.</returns>
+        public IMpcCommand<string> Next()
+        {
+            return new NextCommand();
+        }
+
+        /// <summary>
+        /// Get a previous command.
+        /// </summary>
+        /// <returns>A <see cref="StopCommand"/>.</returns>
+        public IMpcCommand<string> Previous()
+        {
+            return new PreviousCommand();
+        }
+
+        /// <summary>
+        /// Gets a play-pause command.
+        /// </summary>
+        /// <returns>A <see cref="PlayPauseCommand"/>.</returns>
+        public IMpcCommand<string> PlayPause()
+        {
+            return new PlayPauseCommand();
+        }
+
+        /// <summary>
+        /// Gets a play command.
+        /// </summary>
+        /// <param name="mpdFile">The MPD file.</param>
+        /// <returns>A <see cref="PlayCommand"/>.</returns>
+        public IMpcCommand<string> Play(IMpdFile mpdFile)
+        {
+            return new PlayCommand(mpdFile.Id, mpdFile.Position);
+        }
+
+        /// <summary>
+        /// Gets a play command.
+        /// </summary>
+        /// <param name="position">The position.</param>
+        /// <returns>A <see cref="PlayCommand"/>.</returns>
+        public IMpcCommand<string> Play(int position)
+        {
+            return new PlayCommand(position, MpdFile.NoId);
+        }
+
+        /// <summary>
+        /// Gets a play command.
+        /// </summary>
+        /// <param name="id">The identifier.</param>
+        /// <returns>A <see cref="PlayCommand"/>.</returns>
+        public IMpcCommand<string> PlayId(int id)
+        {
+            return new PlayCommand(MpdFile.NoPos, id);
+        }
+
+        /// <summary>
+        /// Gets a stop command.
+        /// </summary>
+        /// <returns>A <see cref="StopCommand"/>.</returns>
+        public IMpcCommand<string> Stop()
+        {
+            return new StopCommand();
+        }
+
+        /// <summary>
+        /// Sets the volume.
+        /// </summary>
+        /// <param name="volume">The volume.</param>
+        /// <returns>
+        /// A <see cref="T:MpcNET.Commands.Playback.SetVolumeCommand" />.
+        /// </returns>
+        public IMpcCommand<string> SetVolume(byte volume)
+        {
+            return new SetVolumeCommand(volume);
+        }
+    }
+}

Sources/MpcNET/Commands/Playlist/AddCommand.cs

@@ -0,0 +1,30 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="AddCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands.Playlist
+{
+    using System.Collections.Generic;
+
+    /// <summary>
+    /// Adds the file URI to the playlist (directories add recursively). URI can also be a single file.
+    /// </summary>
+    internal class AddCommand : IMpcCommand<string>
+    {
+        private readonly string uri;
+
+        public AddCommand(string uri)
+        {
+            this.uri = uri;
+        }
+
+        public string Serialize() => string.Join(" ", "add", $"\"{this.uri}\"");
+
+        public string Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            return string.Join(", ", response);
+        }
+    }
+}

Sources/MpcNET/Commands/Playlist/AddIdCommand.cs

@@ -0,0 +1,30 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="AddIdCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands.Playlist
+{
+    using System.Collections.Generic;
+
+    /// <summary>
+    /// Adds a song to the playlist (non-recursive) and returns the song id.
+    /// </summary>
+    internal class AddIdCommand : IMpcCommand<string>
+    {
+        private readonly string uri;
+
+        public AddIdCommand(string uri)
+        {
+            this.uri = uri;
+        }
+
+        public string Serialize() => string.Join(" ", "addid", $"\"{this.uri}\"");
+
+        public string Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            return string.Join(", ", response);
+        }
+    }
+}

Sources/MpcNET/Commands/Playlist/ClearCommand.cs

@@ -0,0 +1,23 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="ClearCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands.Playlist
+{
+    using System.Collections.Generic;
+
+    /// <summary>
+    /// Clears the current playlist.
+    /// </summary>
+    internal class ClearCommand : IMpcCommand<string>
+    {
+        public string Serialize() => "clear";
+
+        public string Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            return string.Join(", ", response);
+        }
+    }
+}

Sources/MpcNET/Commands/Playlist/DeleteCommand.cs

@@ -0,0 +1,30 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="DeleteCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands.Playlist
+{
+    using System.Collections.Generic;
+
+    /// <summary>
+    /// Deletes a song from the playlist.
+    /// </summary>
+    internal class DeleteCommand : IMpcCommand<string>
+    {
+        private readonly int position;
+
+        public DeleteCommand(int position)
+        {
+            this.position = position;
+        }
+
+        public string Serialize() => string.Join(" ", "delete", this.position);
+
+        public string Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            return string.Join(", ", response);
+        }
+    }
+}

Sources/MpcNET/Commands/Playlist/DeleteIdCommand.cs

@@ -0,0 +1,30 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="DeleteIdCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands.Playlist
+{
+    using System.Collections.Generic;
+
+    /// <summary>
+    /// Deletes the song SONGID from the playlist
+    /// </summary>
+    internal class DeleteIdCommand : IMpcCommand<string>
+    {
+        private readonly int songId;
+
+        public DeleteIdCommand(int songId)
+        {
+            this.songId = songId;
+        }
+
+        public string Serialize() => string.Join(" ", "deleteid", this.songId);
+
+        public string Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            return string.Join(", ", response);
+        }
+    }
+}

Sources/MpcNET/Commands/Playlist/ListPlaylistCommand.cs

@@ -0,0 +1,34 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="ListPlaylistCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands.Playlist
+{
+    using System.Collections.Generic;
+    using System.Linq;
+    using MpcNET.Types;
+
+    /// <summary>
+    /// Lists the songs in the playlist.
+    /// </summary>
+    internal class ListPlaylistCommand : IMpcCommand<IEnumerable<IMpdFilePath>>
+    {
+        private readonly string playlistName;
+
+        public ListPlaylistCommand(string playlistName)
+        {
+            this.playlistName = playlistName;
+        }
+
+        public string Serialize() => string.Join(" ", "listplaylist", $"\"{this.playlistName}\"");
+
+        public IEnumerable<IMpdFilePath> Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            var results = response.Where(line => line.Key.Equals("file")).Select(line => new MpdFile(line.Value));
+
+            return results;
+        }
+    }
+}

Sources/MpcNET/Commands/Playlist/ListPlaylistInfoCommand.cs

@@ -0,0 +1,31 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="ListPlaylistInfoCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands.Playlist
+{
+    using System.Collections.Generic;
+    using MpcNET.Types;
+
+    /// <summary>
+    /// Lists the songs with metadata in the playlist.
+    /// </summary>
+    internal class ListPlaylistInfoCommand : IMpcCommand<IEnumerable<IMpdFile>>
+    {
+        private readonly string playlistName;
+
+        public ListPlaylistInfoCommand(string playlistName)
+        {
+            this.playlistName = playlistName;
+        }
+
+        public string Serialize() => string.Join(" ", "listplaylistinfo", $"\"{this.playlistName}\"");
+
+        public IEnumerable<IMpdFile> Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            return MpdFile.CreateList(response);
+        }
+    }
+}

Sources/MpcNET/Commands/Playlist/ListPlaylistsCommand.cs

@@ -0,0 +1,39 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="ListPlaylistsCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands.Playlist
+{
+    using System.Collections.Generic;
+    using System.Linq;
+    using MpcNET.Types;
+
+    /// <summary>
+    /// Prints a list of the playlist directory.
+    /// </summary>
+    internal class ListPlaylistsCommand : IMpcCommand<IEnumerable<MpdPlaylist>>
+    {
+        public string Serialize() => "listplaylists";
+
+        public IEnumerable<MpdPlaylist> Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            var result = new List<MpdPlaylist>();
+
+            foreach (var line in response)
+            {
+                if (line.Key.Equals("playlist"))
+                {
+                    result.Add(new MpdPlaylist(line.Value));
+                }
+                else if (line.Key.Equals("Last-Modified"))
+                {
+                    result.Last().AddLastModified(line.Value);
+                }
+            }
+
+            return result;
+        }
+    }
+}

Sources/MpcNET/Commands/Playlist/LoadCommand.cs

@@ -0,0 +1,30 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="LoadCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands.Playlist
+{
+    using System.Collections.Generic;
+
+    /// <summary>
+    /// Loads the playlist into the current queue.
+    /// </summary>
+    internal class LoadCommand : IMpcCommand<string>
+    {
+        private readonly string playlistName;
+
+        public LoadCommand(string playlistName)
+        {
+            this.playlistName = playlistName;
+        }
+
+        public string Serialize() => string.Join(" ", "load", $"\"{this.playlistName}\"");
+
+        public string Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            return string.Join(", ", response);
+        }
+    }
+}

Sources/MpcNET/Commands/Playlist/PlaylistCommand.cs

@@ -0,0 +1,27 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="PlaylistCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands.Playlist
+{
+    using System.Collections.Generic;
+    using System.Linq;
+    using MpcNET.Types;
+
+    /// <summary>
+    /// Displays the current playlist.
+    /// </summary>
+    internal class PlaylistCommand : IMpcCommand<IEnumerable<IMpdFile>>
+    {
+        public string Serialize() => "playlist";
+
+        public IEnumerable<IMpdFile> Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            var results = response.Select(line => MpdFile.Create(line.Value, int.Parse(line.Key)));
+
+            return results;
+        }
+    }
+}

Sources/MpcNET/Commands/Playlist/PlaylistIdCommand.cs

@@ -0,0 +1,31 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="PlaylistIdCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands.Playlist
+{
+    using System.Collections.Generic;
+    using MpcNET.Types;
+
+    /// <summary>
+    /// Displays song ID in the playlist.
+    /// </summary>
+    internal class PlaylistIdCommand : IMpcCommand<IEnumerable<IMpdFile>>
+    {
+        private readonly int songId;
+
+        public PlaylistIdCommand(int songId)
+        {
+            this.songId = songId;
+        }
+
+        public string Serialize() => string.Join(" ", new[] { "playlistid" }, this.songId);
+
+        public IEnumerable<IMpdFile> Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            return MpdFile.CreateList(response);
+        }
+    }
+}

Sources/MpcNET/Commands/Playlist/PlaylistInfoCommand.cs

@@ -0,0 +1,24 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="PlaylistInfoCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands.Playlist
+{
+    using System.Collections.Generic;
+    using MpcNET.Types;
+
+    /// <summary>
+    /// Displays a list of all songs in the playlist,
+    /// </summary>
+    internal class PlaylistInfoCommand : IMpcCommand<IEnumerable<IMpdFile>>
+    {
+        public string Serialize() => "playlistinfo";
+
+        public IEnumerable<IMpdFile> Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            return MpdFile.CreateList(response);
+        }
+    }
+}

Sources/MpcNET/Commands/Reflection/CommandsCommand.cs

@@ -0,0 +1,27 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="CommandsCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands.Reflection
+{
+    using System.Collections.Generic;
+    using System.Linq;
+
+    /// <summary>
+    /// Shows which commands the current user has access to.
+    /// config : This command is only permitted to "local" clients (connected via UNIX domain socket).
+    /// </summary>
+    internal class CommandsCommand : IMpcCommand<IEnumerable<string>>
+    {
+        public string Serialize() => "commands";
+
+        public IEnumerable<string> Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            var result = response.Where(item => item.Key.Equals("command")).Select(item => item.Value);
+
+            return result;
+        }
+    }
+}

Sources/MpcNET/Commands/Reflection/DecodersCommand.cs

@@ -1,16 +1,22 @@
-using System.Collections.Generic;
-using MpcNET.Types;
-
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="DecodersCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
 namespace MpcNET.Commands.Reflection
 {
+    using System.Collections.Generic;
+    using MpcNET.Types;
+
     /// <summary>
     /// Print a list of decoder plugins, followed by their supported suffixes and MIME types.
     /// </summary>
-    public class DecodersCommand : IMpcCommand<IEnumerable<MpdDecoderPlugin>>
+    internal class DecodersCommand : IMpcCommand<IEnumerable<MpdDecoderPlugin>>
     {
-        public string Value => "decoders";
+        public string Serialize() => "decoders";
 
-        public IEnumerable<MpdDecoderPlugin> FormatResponse(IList<KeyValuePair<string, string>> response)
+        public IEnumerable<MpdDecoderPlugin> Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
         {
             var result = new List<MpdDecoderPlugin>();
 

Sources/MpcNET/Commands/Reflection/TagTypesCommand.cs

@@ -0,0 +1,28 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="TagTypesCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands.Reflection
+{
+    using System.Collections.Generic;
+    using System.Linq;
+
+    // TODO: notcommands : Shows which commands the current user does not have access to.
+
+    /// <summary>
+    /// Shows a list of available song metadata.
+    /// </summary>
+    internal class TagTypesCommand : IMpcCommand<IEnumerable<string>>
+    {
+        public string Serialize() => "tagtypes";
+
+        public IEnumerable<string> Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            var result = response.Where(item => item.Key.Equals("tagtype")).Select(item => item.Value);
+
+            return result;
+        }
+    }
+}

Sources/MpcNET/Commands/Reflection/UrlHandlersCommand.cs

@@ -0,0 +1,26 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="UrlHandlersCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands.Reflection
+{
+    using System.Collections.Generic;
+    using System.Linq;
+
+    /// <summary>
+    /// Gets a list of available URL handlers.
+    /// </summary>
+    internal class UrlHandlersCommand : IMpcCommand<IEnumerable<string>>
+    {
+        public string Serialize() => "urlhandlers";
+
+        public IEnumerable<string> Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            var result = response.Where(item => item.Key.Equals("handler")).Select(item => item.Value);
+
+            return result;
+        }
+    }
+}

Sources/MpcNET/Commands/ReflectionCommandFactory.cs

@@ -0,0 +1,54 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="ReflectionCommandFactory.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands
+{
+    using System.Collections.Generic;
+    using MpcNET.Commands.Reflection;
+    using MpcNET.Types;
+
+    /// <summary>
+    /// https://www.musicpd.org/doc/protocol/reflection_commands.html
+    /// </summary>
+    public class ReflectionCommandFactory : IReflectionCommandFactory
+    {
+        /// <summary>
+        /// Gets a commands command.
+        /// </summary>
+        /// <returns>A <see cref="CommandsCommand"/>.</returns>
+        public IMpcCommand<IEnumerable<string>> Commands()
+        {
+            return new CommandsCommand();
+        }
+
+        /// <summary>
+        /// Gets a tag types command.
+        /// </summary>
+        /// <returns>A <see cref="TagTypesCommand"/>.</returns>
+        public IMpcCommand<IEnumerable<string>> TagTypes()
+        {
+            return new TagTypesCommand();
+        }
+
+        /// <summary>
+        /// Gets URL handlers command.
+        /// </summary>
+        /// <returns>A <see cref="UrlHandlersCommand"/>.</returns>
+        public IMpcCommand<IEnumerable<string>> UrlHandlers()
+        {
+            return new UrlHandlersCommand();
+        }
+
+        /// <summary>
+        /// Gets a decoders command.
+        /// </summary>
+        /// <returns>A <see cref="DecodersCommand"/>.</returns>
+        public IMpcCommand<IEnumerable<MpdDecoderPlugin>> Decoders()
+        {
+            return new DecodersCommand();
+        }
+    }
+}

Sources/MpcNET/Commands/Status/CurrentSongCommand.cs

@@ -0,0 +1,21 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="CurrentSongCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands.Status
+{
+    using System.Collections.Generic;
+    using MpcNET.Types;
+
+    internal class CurrentSongCommand : IMpcCommand<IMpdFile>
+    {
+        public string Serialize() => "currentsong";
+
+        public IMpdFile Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            return MpdFile.Create(response, 0).mpdFile;
+        }
+    }
+}

Sources/MpcNET/Commands/Status/IdleCommand.cs

@@ -0,0 +1,35 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="IdleCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands.Status
+{
+    using System.Collections.Generic;
+
+    internal class IdleCommand : IMpcCommand<string>
+    {
+        private readonly string subSystem;
+
+        public IdleCommand(string subSystem)
+        {
+            this.subSystem = subSystem;
+        }
+
+        public string Serialize()
+        {
+            if (string.IsNullOrEmpty(this.subSystem))
+            {
+                return "idle";
+            }
+
+            return "idle " + this.subSystem;
+        }
+
+        public string Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            return string.Join(", ", response);
+        }
+    }
+}

Sources/MpcNET/Commands/Status/NoIdleCommand.cs

@@ -0,0 +1,20 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="NoIdleCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands.Status
+{
+    using System.Collections.Generic;
+
+    internal class NoIdleCommand : IMpcCommand<string>
+    {
+        public string Serialize() => "noidle";
+
+        public string Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            return string.Join(", ", response);
+        }
+    }
+}

Sources/MpcNET/Commands/Status/StatusCommand.cs

@@ -1,14 +1,41 @@
-using System;
-using System.Collections.Generic;
-using System.Diagnostics;
-
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="StatusCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
 namespace MpcNET.Commands.Status
 {
+    using System;
+    using System.Collections.Generic;
+    using System.Diagnostics;
+
     internal class StatusCommand : IMpcCommand<MpdStatus>
     {
-        public string Value => "status";
+        private const string VolumeText = "volume";
+        private const string RepeatText = "repeat";
+        private const string RandomText = "random";
+        private const string SingleText = "single";
+        private const string ConsumeText = "consume";
+        private const string PlaylistText = "playlist";
+        private const string PlaylistlengthText = "playlistlength";
+        private const string SongText = "song";
+        private const string SongidText = "songid";
+        private const string NextsongText = "nextsong";
+        private const string NextsongidText = "nextsongid";
+        private const string BitrateText = "bitrate";
+        private const string AudioText = "audio";
+        private const string XfadeText = "xfade";
+        private const string StateText = "state";
+        private const string TimeText = "time";
+        private const string ElapsedText = "elapsed";
+        private const string DurationText = "duration";
+        private const string MixrampDbText = "mixrampdb";
+        private const string UpdatingDbText = "updating_db";
 
-        public MpdStatus FormatResponse(IList<KeyValuePair<string, string>> response)
+        public string Serialize() => "status";
+
+        public MpdStatus Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
         {
             int volume = -1;
             bool repeat = false;
@@ -29,6 +56,7 @@ namespace MpcNET.Commands.Status
             MpdState mpdState = MpdState.Unknown;
             TimeSpan elapsed;
             TimeSpan duration;
+            double mixrampDb = -1;
             int updatingDb = -1;
             string error = string.Empty;
             foreach (var keyValuePair in response)
@@ -36,61 +64,66 @@ namespace MpcNET.Commands.Status
                 var value = keyValuePair.Value;
                 switch (keyValuePair.Key)
                 {
-                    case "volume":
+                    case VolumeText:
                         int.TryParse(value, out volume);
                         break;
-                    case "repeat":
-                        repeat = "1" == value;
+                    case RepeatText:
+                        repeat = value == "1";
                         break;
-                    case "random":
-                        random = "1" == value;
+                    case RandomText:
+                        random = value == "1";
                         break;
-                    case "single":
-                        single = "1" == value;
+                    case SingleText:
+                        single = value == "1";
                         break;
-                    case "consume":
-                        consume = "1" == value;
+                    case ConsumeText:
+                        consume = value == "1";
                         break;
-                    case "playlist":
+                    case PlaylistText:
                         int.TryParse(value, out playlist);
                         break;
-                    case "playlistlength":
+                    case PlaylistlengthText:
                         int.TryParse(value, out playlistLength);
                         break;
-                    case "song":
+                    case SongText:
                         int.TryParse(value, out playlistSong);
                         break;
-                    case "songid":
+                    case SongidText:
                         int.TryParse(value, out playlistSongId);
                         break;
-                    case "nextsong":
+                    case NextsongText:
                         int.TryParse(value, out playlistNextSong);
                         break;
-                    case "nextsongid":
+                    case NextsongidText:
                         int.TryParse(value, out playlistNextSongId);
                         break;
-                    case "bitrate":
+                    case BitrateText:
                         int.TryParse(value, out bitrate);
                         break;
-                    case "audio":
+                    case AudioText:
                         var audioFormat = value.Split(':');
                         int.TryParse(audioFormat[0], out audioSampleRate);
                         int.TryParse(audioFormat[1], out audioBits);
                         int.TryParse(audioFormat[2], out audioChannels);
                         break;
-                    case "xfade":
+                    case XfadeText:
                         int.TryParse(value, out crossfade);
                         break;
-                    case "state":
+                    case StateText:
                         Enum.TryParse(value, true, out mpdState);
                         break;
-                    case "elapsed":
+                    case ElapsedText:
                         elapsed = ParseTime(value);
                         break;
-                    case "duration":
+                    case TimeText:
+                        break;
+                    case DurationText:
                         duration = ParseTime(value);
                         break;
-                    case "updating_db":
+                    case MixrampDbText:
+                        double.TryParse(value, out mixrampDb);
+                        break;
+                    case UpdatingDbText:
                         int.TryParse(value, out updatingDb);
                         break;
                     default:
@@ -103,6 +136,8 @@ namespace MpcNET.Commands.Status
                 volume,
                 repeat,
                 random,
+                consume,
+                single,
                 playlist,
                 playlistLength,
                 crossfade,

Sources/MpcNET/Commands/StatusCommandFactory.cs

@@ -0,0 +1,35 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="StatusCommandFactory.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands
+{
+    using MpcNET.Commands.Status;
+    using MpcNET.Types;
+
+    /// <summary>
+    /// https://www.musicpd.org/doc/protocol/command_reference.html#status_commands
+    /// </summary>
+    public class StatusCommandFactory : IStatusCommandFactory
+    {
+        /// <summary>
+        /// Gets a status command.
+        /// </summary>
+        /// <returns>A <see cref="StatusCommand"/>.</returns>
+        public IMpcCommand<MpdStatus> GetStatus()
+        {
+            return new StatusCommand();
+        }
+
+        /// <summary>
+        /// Gets a current song command.
+        /// </summary>
+        /// <returns>A <see cref="CurrentSongCommand"/>.</returns>
+        public IMpcCommand<IMpdFile> GetCurrentSong()
+        {
+            return new CurrentSongCommand();
+        }
+    }
+}

Sources/MpcNET/Commands/StoredPlaylistCommandFactory.cs

@@ -0,0 +1,57 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="StoredPlaylistCommandFactory.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands
+{
+    using System.Collections.Generic;
+    using MpcNET.Commands.Playlist;
+    using MpcNET.Types;
+
+    /// <summary>
+    /// https://www.musicpd.org/doc/protocol/playlist_files.html
+    /// </summary>
+    public class StoredPlaylistCommandFactory : IStoredPlaylistCommandFactory
+    {
+        /// <summary>
+        /// Command: load
+        /// </summary>
+        /// <param name="playlistName">Name of the playlist.</param>
+        /// <returns>A <see cref="LoadCommand" />.</returns>
+        public IMpcCommand<string> Load(string playlistName)
+        {
+            return new LoadCommand(playlistName);
+        }
+
+        /// <summary>
+        /// Command: listplaylist
+        /// </summary>
+        /// <param name="playlistName">Name of the playlist.</param>
+        /// <returns>A <see cref="ListPlaylistCommand" />.</returns>
+        public IMpcCommand<IEnumerable<IMpdFilePath>> GetContent(string playlistName)
+        {
+            return new ListPlaylistCommand(playlistName);
+        }
+
+        /// <summary>
+        /// Command: listplaylistinfo
+        /// </summary>
+        /// <param name="playlistName">Name of the playlist.</param>
+        /// <returns>A <see cref="ListPlaylistInfoCommand" />.</returns>
+        public IMpcCommand<IEnumerable<IMpdFile>> GetContentWithMetadata(string playlistName)
+        {
+            return new ListPlaylistInfoCommand(playlistName);
+        }
+
+        /// <summary>
+        /// Command: listplaylists
+        /// </summary>
+        /// <returns>A <see cref="ListPlaylistsCommand" />.</returns>
+        public IMpcCommand<IEnumerable<MpdPlaylist>> GetAll()
+        {
+            return new ListPlaylistsCommand();
+        }
+    }
+}

Sources/MpcNET/Constants.cs

@@ -0,0 +1,17 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="Constants.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET
+{
+    internal class Constants
+    {
+        public static readonly string Ok = "OK";
+
+        public static readonly string Ack = "ACK";
+
+        public static readonly string FirstLinePrefix = "OK MPD ";
+    }
+}

Sources/MpcNET/Exceptions/CommandNullException.cs

@@ -0,0 +1,20 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="CommandNullException.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Exceptions
+{
+    /// <summary>
+    /// Thrown by <see cref="MpcConnection"/> when the command is null.
+    /// </summary>
+    /// <seealso cref="System.Exception" />
+    public class CommandNullException : MpcException
+    {
+        internal CommandNullException()
+            : base("No command was specified")
+        {
+        }
+    }
+}

Sources/MpcNET/Exceptions/EmptyResponseException.cs

@@ -0,0 +1,26 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="EmptyResponseException.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Exceptions
+{
+    using System;
+
+    /// <summary>
+    /// Exception throw when an empty response is received.
+    /// </summary>
+    /// <seealso cref="Exception" />
+    public class EmptyResponseException : MpcException
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="EmptyResponseException"/> class.
+        /// </summary>
+        /// <param name="command">The command.</param>
+        public EmptyResponseException(string command)
+            : base($"The command: {command} returned no response")
+        {
+        }
+    }
+}

Sources/MpcNET/Exceptions/MpcConnectException.cs

@@ -0,0 +1,26 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="MpcConnectException.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Exceptions
+{
+    using System;
+
+    /// <summary>
+    /// Exception thrown when there are problems with the <see cref="MpcConnection"/>.
+    /// </summary>
+    /// <seealso cref="Exception" />
+    public class MpcConnectException : MpcException
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="MpcConnectException"/> class.
+        /// </summary>
+        /// <param name="message">The message that describes the error.</param>
+        public MpcConnectException(string message)
+            : base(message)
+        {
+        }
+    }
+}

Sources/MpcNET/Exceptions/MpcException.cs

@@ -0,0 +1,26 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="MpcException.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Exceptions
+{
+    using System;
+
+    /// <summary>
+    /// Base class for all exceptions.
+    /// </summary>
+    /// <seealso cref="System.Exception" />
+    public class MpcException : Exception
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="MpcException" /> class.
+        /// </summary>
+        /// <param name="message">The message.</param>
+        public MpcException(string message)
+            : base(message)
+        {
+        }
+    }
+}

Sources/MpcNET/ICommandFactory.cs

@@ -0,0 +1,72 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="ICommandFactory.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET
+{
+    using MpcNET.Commands;
+
+    /// <summary>
+    /// Interface for providing specific command factories.
+    /// </summary>
+    public interface ICommandFactory
+    {
+        /// <summary>
+        /// Gets the status command factory.
+        /// </summary>
+        /// <value>
+        /// The status.
+        /// </value>
+        IStatusCommandFactory Status { get; }
+
+        /// <summary>
+        /// Gets the database command factory.
+        /// </summary>
+        /// <value>
+        /// The database.
+        /// </value>
+        IDatabaseCommandFactory Database { get; }
+
+        /// <summary>
+        /// Gets the reflection command factory.
+        /// </summary>
+        /// <value>
+        /// The reflection.
+        /// </value>
+        IReflectionCommandFactory Reflection { get; }
+
+        /// <summary>
+        /// Gets the stored playlist command factory.
+        /// </summary>
+        /// <value>
+        /// The stored playlist.
+        /// </value>
+        IStoredPlaylistCommandFactory StoredPlaylist { get; }
+
+        /// <summary>
+        /// Gets the current playlist command factory.
+        /// </summary>
+        /// <value>
+        /// The current playlist.
+        /// </value>
+        ICurrentPlaylistCommandFactory CurrentPlaylist { get; }
+
+        /// <summary>
+        /// Gets the playback command factory.
+        /// </summary>
+        /// <value>
+        /// The playback.
+        /// </value>
+        IPlaybackCommandFactory Playback { get; }
+
+        /// <summary>
+        /// Gets the output command factory.
+        /// </summary>
+        /// <value>
+        /// The output.
+        /// </value>
+        IOutputCommandFactory Output { get; }
+    }
+}

Sources/MpcNET/IMpcCommand.cs

@@ -0,0 +1,30 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="IMpcCommand.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET
+{
+    using System.Collections.Generic;
+
+    /// <summary>
+    /// Interface for implementing a MPD command.
+    /// </summary>
+    /// <typeparam name="TValue">The type of the value.</typeparam>
+    public interface IMpcCommand<out TValue>
+    {
+        /// <summary>
+        /// Serializes the command.
+        /// </summary>
+        /// <returns>The serialize command.</returns>
+        string Serialize();
+
+        /// <summary>
+        /// Deserializes the specified response text pairs.
+        /// </summary>
+        /// <param name="response">The response.</param>
+        /// <returns>The deserialized response.</returns>
+        TValue Deserialize(IReadOnlyList<KeyValuePair<string, string>> response);
+    }
+}

Sources/MpcNET/IMpcConnection.cs

@@ -0,0 +1,45 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="IMpcConnection.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+
+namespace MpcNET
+{
+    using System;
+    using System.Threading.Tasks;
+    using MpcNET.Message;
+
+    /// <summary>
+    /// Interface for implementing an MPD connection.
+    /// </summary>
+    /// <seealso cref="System.IDisposable" />
+    public interface IMpcConnection : IDisposable
+    {
+        /// <summary>
+        /// Gets the version.
+        /// </summary>
+        string Version { get; }
+
+        /// <summary>
+        /// Connects asynchronously.
+        /// </summary>
+        /// <returns>The connect task.</returns>
+        Task ConnectAsync();
+
+        /// <summary>
+        /// Disconnects asynchronously.
+        /// </summary>
+        /// <returns>The disconnect task.</returns>
+        Task DisconnectAsync();
+
+        /// <summary>
+        /// Sends the command asynchronously.
+        /// </summary>
+        /// <typeparam name="TResponse">The response type.</typeparam>
+        /// <param name="commandSelector">The command selector.</param>
+        /// <returns>The send task.</returns>
+        Task<IMpdMessage<TResponse>> SendAsync<TResponse>(Func<ICommandFactory, IMpcCommand<TResponse>> commandSelector);
+    }
+}

Sources/MpcNET/IMpcConnectionObserver.cs

@@ -0,0 +1,77 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="IMpcConnectionObserver.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET
+{
+    using System;
+
+    /// <summary>
+    /// Interface for implementing an observer for <see cref="MpcConnection"/>.
+    /// </summary>
+    public interface IMpcConnectionObserver
+    {
+        /// <summary>
+        /// Called when connecting.
+        /// </summary>
+        /// <param name="isReconnect">if set to <c>true</c> [is reconnect].</param>
+        /// <param name="connectAttempt">The connect attempt.</param>
+        void Connecting(bool isReconnect, int connectAttempt);
+
+        /// <summary>
+        /// Called when connection is accepted.
+        /// </summary>
+        /// <param name="isReconnect">if set to <c>true</c> [is reconnect].</param>
+        /// <param name="connectAttempt">The connect attempt.</param>
+        void ConnectionAccepted(bool isReconnect, int connectAttempt);
+
+        /// <summary>
+        /// Called when connected.
+        /// </summary>
+        /// <param name="isReconnect">if set to <c>true</c> [is reconnect].</param>
+        /// <param name="connectAttempt">The connect attempt.</param>
+        /// <param name="connectionInfo">The connection information.</param>
+        void Connected(bool isReconnect, int connectAttempt, string connectionInfo);
+
+        /// <summary>
+        /// Called when sending command.
+        /// </summary>
+        /// <param name="command">The command.</param>
+        void Sending(string command);
+
+        /// <summary>
+        /// Called when send exception occured.
+        /// </summary>
+        /// <param name="commandText">The command text.</param>
+        /// <param name="sendAttempt">The send attempt.</param>
+        /// <param name="exception">The exception.</param>
+        void SendException(string commandText, int sendAttempt, Exception exception);
+
+        /// <summary>
+        /// Called when send is retried.
+        /// </summary>
+        /// <param name="command">The command.</param>
+        /// <param name="sendAttempt">The send attempt.</param>
+        void RetrySend(string command, int sendAttempt);
+
+        /// <summary>
+        /// Called when response is read.
+        /// </summary>
+        /// <param name="responseLine">The response line.</param>
+        void ReadResponse(string responseLine);
+
+        /// <summary>
+        /// Called when disconnecting.
+        /// </summary>
+        /// <param name="isExplicitDisconnect">if set to <c>true</c> the disconnect was explicitly called.</param>
+        void Disconnecting(bool isExplicitDisconnect);
+
+        /// <summary>
+        /// Called when disconnected.
+        /// </summary>
+        /// <param name="isExplicitDisconnect">if set to <c>true</c> the disconnect was explicitly called.</param>
+        void Disconnected(bool isExplicitDisconnect);
+    }
+}

Sources/MpcNET/Message/ErrorMpdMessage.cs

@@ -0,0 +1,23 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="ErrorMpdMessage.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Message
+{
+    internal class ErrorMpdMessage<T> : IMpdMessage<T>
+    {
+        public ErrorMpdMessage(IMpcCommand<T> command, ErrorMpdResponse<T> errorResponse)
+        {
+            this.Request = new MpdRequest<T>(command);
+            this.Response = errorResponse;
+        }
+
+        public IMpdRequest<T> Request { get; }
+
+        public IMpdResponse<T> Response { get; }
+
+        public bool IsResponseValid => false;
+    }
+}

Sources/MpcNET/Message/ErrorMpdResponse.cs

@@ -0,0 +1,44 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="ErrorMpdResponse.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Message
+{
+    using System;
+
+    /// <summary>
+    /// Implementation of <see cref="IMpdResponse{TContent}"/> in case of an error.
+    /// </summary>
+    /// <typeparam name="TContent">The content type.</typeparam>
+    /// <seealso cref="MpcNET.Message.IMpdResponse{T}" />
+    public class ErrorMpdResponse<TContent> : IMpdResponse<TContent>
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="ErrorMpdResponse{TContent}"/> class.
+        /// </summary>
+        /// <param name="exception">The exception.</param>
+        public ErrorMpdResponse(Exception exception)
+        {
+            this.Result = new MpdResponseResult(null, false, exception);
+            this.Content = default(TContent);
+        }
+
+        /// <summary>
+        /// Gets the state.
+        /// </summary>
+        /// <value>
+        /// The state.
+        /// </value>
+        public IMpdResponseResult Result { get; }
+
+        /// <summary>
+        /// Gets the content.
+        /// </summary>
+        /// <value>
+        /// The content.
+        /// </value>
+        public TContent Content { get; }
+    }
+}

Sources/MpcNET/Message/IMpdMessage.cs

@@ -0,0 +1,39 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="IMpdMessage.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Message
+{
+    /// <summary>
+    /// Interface for implementing MPD message.
+    /// </summary>
+    /// <typeparam name="TContent">The type of the content.</typeparam>
+    public interface IMpdMessage<TContent>
+    {
+        /// <summary>
+        /// Gets the request.
+        /// </summary>
+        /// <value>
+        /// The request.
+        /// </value>
+        IMpdRequest<TContent> Request { get; }
+
+        /// <summary>
+        /// Gets the response.
+        /// </summary>
+        /// <value>
+        /// The response.
+        /// </value>
+        IMpdResponse<TContent> Response { get; }
+
+        /// <summary>
+        /// Gets a value indicating whether this instance is response valid.
+        /// </summary>
+        /// <value>
+        /// <c>true</c> if this instance is response valid; otherwise, <c>false</c>.
+        /// </value>
+        bool IsResponseValid { get; }
+    }
+}

Sources/MpcNET/Message/IMpdRequest.cs

@@ -0,0 +1,23 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="IMpdRequest.cs" company="Hukano">
+// Copyright (c) Hukano. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Message
+{
+    /// <summary>
+    /// Interface for implementing a MPD request.
+    /// </summary>
+    /// <typeparam name="TContent">The response content.</typeparam>
+    public interface IMpdRequest<out TContent>
+    {
+        /// <summary>
+        /// Gets the command.
+        /// </summary>
+        /// <value>
+        /// The command.
+        /// </value>
+        IMpcCommand<TContent> Command { get; }
+    }
+}