Moved a part of music logic to a music service

src/NadekoBot/Modules/Administration/Commands/PlayingRotateCommands.cs

@@ -76,10 +76,10 @@ namespace NadekoBot.Modules.Administration
                     { "%servers%", () => NadekoBot.Client.Guilds.Count.ToString()},
                     { "%users%", () => NadekoBot.Client.Guilds.Sum(s => s.Users.Count).ToString()},
                     { "%playing%", () => {
-                            var cnt = Music.Music.MusicPlayers.Count(kvp => kvp.Value.CurrentSong != null);
+                            var cnt = NadekoBot.MusicService.MusicPlayers.Count(kvp => kvp.Value.CurrentSong != null);
                             if (cnt != 1) return cnt.ToString();
                             try {
-                                var mp = Music.Music.MusicPlayers.FirstOrDefault();
+                                var mp = NadekoBot.MusicService.MusicPlayers.FirstOrDefault();
                                 return mp.Value.CurrentSong.SongInfo.Title;
                             }
                             catch {
@@ -87,7 +87,7 @@ namespace NadekoBot.Modules.Administration
                             }
                         }
                     },
-                    { "%queued%", () => Music.Music.MusicPlayers.Sum(kvp => kvp.Value.Playlist.Count).ToString()},
+                    { "%queued%", () => NadekoBot.MusicService.MusicPlayers.Sum(kvp => kvp.Value.Playlist.Count).ToString()},
                     { "%time%", () => DateTime.Now.ToString("HH:mm " + TimeZoneInfo.Local.StandardName.GetInitials()) },
                     { "%shardcount%", () => NadekoBot.Client.Shards.Count.ToString() },
                 };

src/NadekoBot/Modules/Music/Music.cs

@@ -15,6 +15,7 @@ using Newtonsoft.Json.Linq;
 using System.Collections.Generic;
 using NadekoBot.Services.Database.Models;
 using System.Threading;
+using NadekoBot.Services.Music;
 
 namespace NadekoBot.Modules.Music
 {
@@ -22,10 +23,10 @@ namespace NadekoBot.Modules.Music
     [DontAutoLoad]
     public class Music : NadekoTopLevelModule 
     {
-        public static ConcurrentDictionary<ulong, MusicPlayer> MusicPlayers { get; } = new ConcurrentDictionary<ulong, MusicPlayer>();
-
         public const string MusicDataPath = "data/musicdata";
 
+        private static MusicService music;
+
         static Music()
         {
             //it can fail if its currenctly opened or doesn't exist. Either way i don't care
@@ -34,6 +35,9 @@ namespace NadekoBot.Modules.Music
             NadekoBot.Client.UserVoiceStateUpdated += Client_UserVoiceStateUpdated;
 
             Directory.CreateDirectory(MusicDataPath);
+
+            //todo move to service
+            music = NadekoBot.MusicService;
         }
 
         private static Task Client_UserVoiceStateUpdated(SocketUser iusr, SocketVoiceState oldState, SocketVoiceState newState)
@@ -44,13 +48,11 @@ namespace NadekoBot.Modules.Music
                 return Task.CompletedTask;
 
             MusicPlayer player;
-            if (!MusicPlayers.TryGetValue(usr.Guild.Id, out player))
+            if ((player = music.GetPlayer(usr.Guild.Id)) == null)
                 return Task.CompletedTask;
 
             try
             {
-
-
                 //if bot moved
                 if ((player.PlaybackVoiceChannel == oldState.VoiceChannel) &&
                         usr.Id == NadekoBot.Client.CurrentUser.Id)
@@ -92,7 +94,8 @@ namespace NadekoBot.Modules.Music
                 return Task.CompletedTask;
 
             MusicPlayer musicPlayer;
-            if (!MusicPlayers.TryGetValue(Context.Guild.Id, out musicPlayer)) return Task.CompletedTask;
+            if ((musicPlayer = music.GetPlayer(Context.Guild.Id)) == null)
+                return Task.CompletedTask;
             if (musicPlayer.PlaybackVoiceChannel == ((IGuildUser)Context.User).VoiceChannel)
             {
                 while (--skipCount > 0)
@@ -109,7 +112,8 @@ namespace NadekoBot.Modules.Music
         public Task Stop()
         {
             MusicPlayer musicPlayer;
-            if (!MusicPlayers.TryGetValue(Context.Guild.Id, out musicPlayer)) return Task.CompletedTask;
+            if ((musicPlayer = music.GetPlayer(Context.Guild.Id)) == null)
+                return Task.CompletedTask;
             if (((IGuildUser)Context.User).VoiceChannel == musicPlayer.PlaybackVoiceChannel)
             {
                 musicPlayer.Autoplay = false;
@@ -123,10 +127,10 @@ namespace NadekoBot.Modules.Music
         public Task Destroy()
         {
             MusicPlayer musicPlayer;
-            if (!MusicPlayers.TryGetValue(Context.Guild.Id, out musicPlayer)) return Task.CompletedTask;
+            if ((musicPlayer = music.GetPlayer(Context.Guild.Id)) == null)
+                return Task.CompletedTask;
             if (((IGuildUser)Context.User).VoiceChannel == musicPlayer.PlaybackVoiceChannel)
-                if (MusicPlayers.TryRemove(Context.Guild.Id, out musicPlayer))
+                music.DestroyPlayer(Context.Guild.Id);
-                    musicPlayer.Destroy();
 
             return Task.CompletedTask;
 
@@ -137,7 +141,8 @@ namespace NadekoBot.Modules.Music
         public Task Pause()
         {
             MusicPlayer musicPlayer;
-            if (!MusicPlayers.TryGetValue(Context.Guild.Id, out musicPlayer)) return Task.CompletedTask;
+            if ((musicPlayer = music.GetPlayer(Context.Guild.Id)) == null)
+                return Task.CompletedTask;
             if (((IGuildUser)Context.User).VoiceChannel != musicPlayer.PlaybackVoiceChannel)
                 return Task.CompletedTask;
             musicPlayer.TogglePause();
@@ -150,7 +155,8 @@ namespace NadekoBot.Modules.Music
         {
             var channel = (ITextChannel)Context.Channel;
             MusicPlayer musicPlayer;
-            if (!MusicPlayers.TryGetValue(channel.Guild.Id, out musicPlayer)) return;
+            if ((musicPlayer = music.GetPlayer(Context.Guild.Id)) == null)
+                return;
             if (((IGuildUser)Context.User).VoiceChannel != musicPlayer.PlaybackVoiceChannel)
                 return;
             var val = musicPlayer.FairPlay = !musicPlayer.FairPlay;
@@ -169,7 +175,7 @@ namespace NadekoBot.Modules.Music
         [RequireContext(ContextType.Guild)]
         public async Task Queue([Remainder] string query)
         {
-            await QueueSong(((IGuildUser)Context.User), (ITextChannel)Context.Channel, ((IGuildUser)Context.User).VoiceChannel, query).ConfigureAwait(false);
+            await music.QueueSong(((IGuildUser)Context.User), (ITextChannel)Context.Channel, ((IGuildUser)Context.User).VoiceChannel, query).ConfigureAwait(false);
             if ((await Context.Guild.GetCurrentUserAsync()).GetPermissions((IGuildChannel)Context.Channel).ManageMessages)
             {
                 Context.Message.DeleteAfter(10);
@@ -180,7 +186,7 @@ namespace NadekoBot.Modules.Music
         [RequireContext(ContextType.Guild)]
         public async Task SoundCloudQueue([Remainder] string query)
         {
-            await QueueSong(((IGuildUser)Context.User), (ITextChannel)Context.Channel, ((IGuildUser)Context.User).VoiceChannel, query, musicType: MusicType.Soundcloud).ConfigureAwait(false);
+            await music.QueueSong(((IGuildUser)Context.User), (ITextChannel)Context.Channel, ((IGuildUser)Context.User).VoiceChannel, query, musicType: MusicType.Soundcloud).ConfigureAwait(false);
             if ((await Context.Guild.GetCurrentUserAsync()).GetPermissions((IGuildChannel)Context.Channel).ManageMessages)
             {
                 Context.Message.DeleteAfter(10);
@@ -193,8 +199,9 @@ namespace NadekoBot.Modules.Music
         {
             Song currentSong;
             MusicPlayer musicPlayer;
-            if (!MusicPlayers.TryGetValue(Context.Guild.Id, out musicPlayer) ||
+            if ((musicPlayer = music.GetPlayer(Context.Guild.Id)) == null)
-                (currentSong = musicPlayer?.CurrentSong) == null)
+                return;
+            if ((currentSong = musicPlayer?.CurrentSong) == null)
             {
                 await ReplyErrorLocalized("no_player").ConfigureAwait(false);
                 return;
@@ -253,7 +260,7 @@ namespace NadekoBot.Modules.Music
         public async Task NowPlaying()
         {
             MusicPlayer musicPlayer;
-            if (!MusicPlayers.TryGetValue(Context.Guild.Id, out musicPlayer))
+            if ((musicPlayer = music.GetPlayer(Context.Guild.Id)) == null)
                 return;
             var currentSong = musicPlayer.CurrentSong;
             if (currentSong == null)
@@ -274,7 +281,7 @@ namespace NadekoBot.Modules.Music
         public async Task Volume(int val)
         {
             MusicPlayer musicPlayer;
-            if (!MusicPlayers.TryGetValue(Context.Guild.Id, out musicPlayer))
+            if ((musicPlayer = music.GetPlayer(Context.Guild.Id)) == null)
                 return;
             if (((IGuildUser)Context.User).VoiceChannel != musicPlayer.PlaybackVoiceChannel)
                 return;
@@ -308,9 +315,8 @@ namespace NadekoBot.Modules.Music
         [RequireContext(ContextType.Guild)]
         public async Task ShufflePlaylist()
         {
-
             MusicPlayer musicPlayer;
-            if (!MusicPlayers.TryGetValue(Context.Guild.Id, out musicPlayer))
+            if ((musicPlayer = music.GetPlayer(Context.Guild.Id)) == null)
                 return;
             if (((IGuildUser)Context.User).VoiceChannel != musicPlayer.PlaybackVoiceChannel)
                 return;
@@ -362,7 +368,7 @@ namespace NadekoBot.Modules.Music
                         return;
                     try
                     {
-                        await QueueSong(gusr, (ITextChannel)Context.Channel, gusr.VoiceChannel, id, true).ConfigureAwait(false);
+                        await music.QueueSong(gusr, (ITextChannel)Context.Channel, gusr.VoiceChannel, id, true).ConfigureAwait(false);
                     }
                     catch (SongNotFoundException) { }
                     catch { try { cancelSource.Cancel(); } catch { } }
@@ -388,17 +394,17 @@ namespace NadekoBot.Modules.Music
             using (var http = new HttpClient())
             {
                 var scvids = JObject.Parse(await http.GetStringAsync($"http://api.soundcloud.com/resolve?url={pl}&client_id={NadekoBot.Credentials.SoundCloudClientId}").ConfigureAwait(false))["tracks"].ToObject<SoundCloudVideo[]>();
-                await QueueSong(((IGuildUser)Context.User), (ITextChannel)Context.Channel, ((IGuildUser)Context.User).VoiceChannel, scvids[0].TrackLink).ConfigureAwait(false);
+                await music.QueueSong(((IGuildUser)Context.User), (ITextChannel)Context.Channel, ((IGuildUser)Context.User).VoiceChannel, scvids[0].TrackLink).ConfigureAwait(false);
 
-                MusicPlayer mp;
+                MusicPlayer musicPlayer;
-                if (!MusicPlayers.TryGetValue(Context.Guild.Id, out mp))
+                if ((musicPlayer = music.GetPlayer(Context.Guild.Id)) == null)
                     return;
 
                 foreach (var svideo in scvids.Skip(1))
                 {
                     try
                     {
-                        mp.AddSong(new Song(new SongInfo
+                        musicPlayer.AddSong(new Song(new SongInfo
                         {
                             Title = svideo.FullName,
                             Provider = "SoundCloud",
@@ -429,7 +435,7 @@ namespace NadekoBot.Modules.Music
             {
                 try
                 {
-                    await QueueSong(gusr, (ITextChannel)Context.Channel, gusr.VoiceChannel, file.FullName, true, MusicType.Local).ConfigureAwait(false);
+                    await music.QueueSong(gusr, (ITextChannel)Context.Channel, gusr.VoiceChannel, file.FullName, true, MusicType.Local).ConfigureAwait(false);
                 }
                 catch (PlaylistFullException)
                 {
@@ -453,7 +459,7 @@ namespace NadekoBot.Modules.Music
                 await ReplyErrorLocalized("must_be_in_voice").ConfigureAwait(false);
                 return;
             }
-            await QueueSong(((IGuildUser)Context.User), (ITextChannel)Context.Channel, ((IGuildUser)Context.User).VoiceChannel, radioLink, musicType: MusicType.Radio).ConfigureAwait(false);
+            await music.QueueSong(((IGuildUser)Context.User), (ITextChannel)Context.Channel, ((IGuildUser)Context.User).VoiceChannel, radioLink, musicType: MusicType.Radio).ConfigureAwait(false);
             if ((await Context.Guild.GetCurrentUserAsync()).GetPermissions((IGuildChannel)Context.Channel).ManageMessages)
             {
                 Context.Message.DeleteAfter(10);
@@ -469,7 +475,7 @@ namespace NadekoBot.Modules.Music
             var arg = path;
             if (string.IsNullOrWhiteSpace(arg))
                 return;
-            await QueueSong(((IGuildUser)Context.User), (ITextChannel)Context.Channel, ((IGuildUser)Context.User).VoiceChannel, path, musicType: MusicType.Local).ConfigureAwait(false);
+            await music.QueueSong(((IGuildUser)Context.User), (ITextChannel)Context.Channel, ((IGuildUser)Context.User).VoiceChannel, path, musicType: MusicType.Local).ConfigureAwait(false);
 
         }
 
@@ -491,7 +497,7 @@ namespace NadekoBot.Modules.Music
         public Task Remove(int num)
         {
             MusicPlayer musicPlayer;
-            if (!MusicPlayers.TryGetValue(Context.Guild.Id, out musicPlayer))
+            if ((musicPlayer = music.GetPlayer(Context.Guild.Id)) == null)
                 return Task.CompletedTask;
             if (((IGuildUser)Context.User).VoiceChannel != musicPlayer.PlaybackVoiceChannel)
                 return Task.CompletedTask;
@@ -508,7 +514,8 @@ namespace NadekoBot.Modules.Music
             if (all.Trim().ToUpperInvariant() != "ALL")
                 return;
             MusicPlayer musicPlayer;
-            if (!MusicPlayers.TryGetValue(Context.Guild.Id, out musicPlayer)) return;
+            if ((musicPlayer = music.GetPlayer(Context.Guild.Id)) == null)
+                return;
             musicPlayer.ClearQueue();
             await ReplyConfirmLocalized("queue_cleared").ConfigureAwait(false);
         }
@@ -521,7 +528,7 @@ namespace NadekoBot.Modules.Music
                 return;
 
             MusicPlayer musicPlayer;
-            if (!MusicPlayers.TryGetValue(Context.Guild.Id, out musicPlayer))
+            if ((musicPlayer = music.GetPlayer(Context.Guild.Id)) == null)
                 return;
 
             fromto = fromto?.Trim();
@@ -564,7 +571,7 @@ namespace NadekoBot.Modules.Music
         public async Task SetMaxQueue(uint size = 0)
         {
             MusicPlayer musicPlayer;
-            if (!MusicPlayers.TryGetValue(Context.Guild.Id, out musicPlayer))
+            if ((musicPlayer = music.GetPlayer(Context.Guild.Id)) == null)
                 return;
 
             musicPlayer.MaxQueueSize = size;
@@ -584,7 +591,7 @@ namespace NadekoBot.Modules.Music
 
             var channel = (ITextChannel)Context.Channel;
             MusicPlayer musicPlayer;
-            if (!MusicPlayers.TryGetValue(channel.Guild.Id, out musicPlayer))
+            if ((musicPlayer = music.GetPlayer(Context.Guild.Id)) == null)
                 return;
             musicPlayer.MaxPlaytimeSeconds = seconds;
             if (seconds == 0)
@@ -597,9 +604,8 @@ namespace NadekoBot.Modules.Music
         [RequireContext(ContextType.Guild)]
         public async Task ReptCurSong()
         {
-
             MusicPlayer musicPlayer;
-            if (!MusicPlayers.TryGetValue(Context.Guild.Id, out musicPlayer))
+            if ((musicPlayer = music.GetPlayer(Context.Guild.Id)) == null)
                 return;
             var currentSong = musicPlayer.CurrentSong;
             if (currentSong == null)
@@ -621,9 +627,8 @@ namespace NadekoBot.Modules.Music
         [RequireContext(ContextType.Guild)]
         public async Task RepeatPl()
         {
-
             MusicPlayer musicPlayer;
-            if (!MusicPlayers.TryGetValue(Context.Guild.Id, out musicPlayer))
+            if ((musicPlayer = music.GetPlayer(Context.Guild.Id)) == null)
                 return;
             var currentValue = musicPlayer.ToggleRepeatPlaylist();
             if(currentValue)
@@ -636,9 +641,8 @@ namespace NadekoBot.Modules.Music
         [RequireContext(ContextType.Guild)]
         public async Task Save([Remainder] string name)
         {
-
             MusicPlayer musicPlayer;
-            if (!MusicPlayers.TryGetValue(Context.Guild.Id, out musicPlayer))
+            if ((musicPlayer = music.GetPlayer(Context.Guild.Id)) == null)
                 return;
 
             var curSong = musicPlayer.CurrentSong;
@@ -694,7 +698,7 @@ namespace NadekoBot.Modules.Music
                 var usr = (IGuildUser)Context.User;
                 try
                 {
-                    await QueueSong(usr, (ITextChannel)Context.Channel, usr.VoiceChannel, item.Query, true, item.ProviderType).ConfigureAwait(false);
+                    await music.QueueSong(usr, (ITextChannel)Context.Channel, usr.VoiceChannel, item.Query, true, item.ProviderType).ConfigureAwait(false);
                 }
                 catch (SongNotFoundException) { }
                 catch { break; }
@@ -764,7 +768,7 @@ namespace NadekoBot.Modules.Music
         public async Task Goto(int time)
         {
             MusicPlayer musicPlayer;
-            if (!MusicPlayers.TryGetValue(Context.Guild.Id, out musicPlayer))
+            if ((musicPlayer = music.GetPlayer(Context.Guild.Id)) == null)
                 return;
             if (((IGuildUser)Context.User).VoiceChannel != musicPlayer.PlaybackVoiceChannel)
                 return;
@@ -799,7 +803,7 @@ namespace NadekoBot.Modules.Music
         public async Task Autoplay()
         {
             MusicPlayer musicPlayer;
-            if (!MusicPlayers.TryGetValue(Context.Guild.Id, out musicPlayer))
+            if ((musicPlayer = music.GetPlayer(Context.Guild.Id)) == null)
                 return;
 
             if (!musicPlayer.ToggleAutoplay())
@@ -814,7 +818,7 @@ namespace NadekoBot.Modules.Music
         public async Task SetMusicChannel()
         {
             MusicPlayer musicPlayer;
-            if (!MusicPlayers.TryGetValue(Context.Guild.Id, out musicPlayer))
+            if ((musicPlayer = music.GetPlayer(Context.Guild.Id)) == null)
             {
                 await ReplyErrorLocalized("no_player").ConfigureAwait(false);
                 return;
@@ -825,167 +829,5 @@ namespace NadekoBot.Modules.Music
             await ReplyConfirmLocalized("set_music_channel").ConfigureAwait(false);
         }
 
-        public async Task QueueSong(IGuildUser queuer, ITextChannel textCh, IVoiceChannel voiceCh, string query, bool silent = false, MusicType musicType = MusicType.Normal)
-        {
-            if (voiceCh == null || voiceCh.Guild != textCh.Guild)
-            {
-                if (!silent)
-                    await textCh.SendErrorAsync(GetText("must_be_in_voice")).ConfigureAwait(false);
-                throw new ArgumentNullException(nameof(voiceCh));
-            }
-            if (string.IsNullOrWhiteSpace(query) || query.Length < 3)
-                throw new ArgumentException("Invalid song query.", nameof(query));
-
-            var musicPlayer = MusicPlayers.GetOrAdd(textCh.Guild.Id, server =>
-            {
-                float vol;// SpecificConfigurations.Default.Of(server.Id).DefaultMusicVolume;
-                using (var uow = DbHandler.UnitOfWork())
-                {
-                    vol = uow.GuildConfigs.For(textCh.Guild.Id, set => set).DefaultMusicVolume;
-                }
-                var mp = new MusicPlayer(voiceCh, textCh, vol);
-                IUserMessage playingMessage = null;
-                IUserMessage lastFinishedMessage = null;
-                mp.OnCompleted += async (s, song) =>
-                {
-                    try
-                    {
-                        lastFinishedMessage?.DeleteAfter(0);
-
-                        try
-                        {
-                            lastFinishedMessage = await mp.OutputTextChannel.EmbedAsync(new EmbedBuilder().WithOkColor()
-                                    .WithAuthor(eab => eab.WithName(GetText("finished_song")).WithMusicIcon())
-                                    .WithDescription(song.PrettyName)
-                                    .WithFooter(ef => ef.WithText(song.PrettyInfo)))
-                                .ConfigureAwait(false);
-                        }
-                        catch
-                        {
-                            // ignored
-                        }
-
-                        if (mp.Autoplay && mp.Playlist.Count == 0 && song.SongInfo.ProviderType == MusicType.Normal)
-                        {
-                            var relatedVideos = (await NadekoBot.Google.GetRelatedVideosAsync(song.SongInfo.Query, 4)).ToList();
-                            if(relatedVideos.Count > 0)
-                            await QueueSong(await queuer.Guild.GetCurrentUserAsync(), 
-                                textCh, 
-                                voiceCh, 
-                                relatedVideos[new NadekoRandom().Next(0, relatedVideos.Count)],
-                                true).ConfigureAwait(false);
-                        }
-                    }
-                    catch
-                    {
-                        // ignored
-                    }
-                };
-
-                mp.OnStarted += async (player, song) =>
-                {
-                    try { await mp.UpdateSongDurationsAsync().ConfigureAwait(false); }
-                    catch
-                    {
-                        // ignored
-                    }
-                    var sender = player;
-                    if (sender == null)
-                        return;
-                    try
-                    {
-                        playingMessage?.DeleteAfter(0);
-
-                        playingMessage = await mp.OutputTextChannel.EmbedAsync(new EmbedBuilder().WithOkColor()
-                                                    .WithAuthor(eab => eab.WithName(GetText("playing_song")).WithMusicIcon())
-                                                    .WithDescription(song.PrettyName)
-                                                    .WithFooter(ef => ef.WithText(song.PrettyInfo)))
-                                                    .ConfigureAwait(false);
-                    }
-                    catch
-                    {
-                        // ignored
-                    }
-                };
-                mp.OnPauseChanged += async (paused) =>
-                {
-                    try
-                    {
-                        IUserMessage msg;
-                        if (paused)
-                            msg = await mp.OutputTextChannel.SendConfirmAsync(GetText("paused")).ConfigureAwait(false);
-                        else
-                            msg = await mp.OutputTextChannel.SendConfirmAsync(GetText("resumed")).ConfigureAwait(false);
-
-                        msg?.DeleteAfter(10);
-                    }
-                    catch
-                    {
-                        // ignored
-                    }
-                };
-                
-                mp.SongRemoved += async (song, index) =>
-                {
-                    try
-                    {
-                        var embed = new EmbedBuilder()
-                            .WithAuthor(eab => eab.WithName(GetText("removed_song") + " #" + (index + 1)).WithMusicIcon())
-                            .WithDescription(song.PrettyName)
-                            .WithFooter(ef => ef.WithText(song.PrettyInfo))
-                            .WithErrorColor();
-
-                        await mp.OutputTextChannel.EmbedAsync(embed).ConfigureAwait(false);
-
-                    }
-                    catch
-                    {
-                        // ignored
-                    }
-                };
-                return mp;
-            });
-            Song resolvedSong;
-            try
-            {
-                musicPlayer.ThrowIfQueueFull();
-                resolvedSong = await SongHandler.ResolveSong(query, musicType).ConfigureAwait(false);
-
-                if (resolvedSong == null)
-                    throw new SongNotFoundException();
-
-                musicPlayer.AddSong(resolvedSong, queuer.Username);
-            }
-            catch (PlaylistFullException)
-            {
-                try
-                {
-                    await textCh.SendConfirmAsync(GetText("queue_full", musicPlayer.MaxQueueSize));
-                }
-                catch
-                {
-                    // ignored
-                }
-                throw;
-            }
-            if (!silent)
-            {
-                try
-                {
-                    //var queuedMessage = await textCh.SendConfirmAsync($"🎵 Queued **{resolvedSong.SongInfo.Title}** at `#{musicPlayer.Playlist.Count + 1}`").ConfigureAwait(false);
-                    var queuedMessage = await textCh.EmbedAsync(new EmbedBuilder().WithOkColor()
-                                                            .WithAuthor(eab => eab.WithName(GetText("queued_song") + " #" + (musicPlayer.Playlist.Count + 1)).WithMusicIcon())
-                                                            .WithDescription($"{resolvedSong.PrettyName}\n{GetText("queue")} ")
-                                                            .WithThumbnailUrl(resolvedSong.Thumbnail)
-                                                            .WithFooter(ef => ef.WithText(resolvedSong.PrettyProvider)))
-                                                            .ConfigureAwait(false);
-                    queuedMessage?.DeleteAfter(10);
-                }
-                catch
-                {
-                    // ignored
-                } // if queued message sending fails, don't attempt to delete it
-            }
-        }
     }
 }

src/NadekoBot/Modules/Utility/Utility.cs

@@ -418,8 +418,8 @@ namespace NadekoBot.Modules.Utility
                             NadekoBot.Client.Guilds.Count, stats.TextChannels, stats.VoiceChannels)).WithIsInline(true))
 #if !GLOBAL_NADEKO
                     .WithFooter(efb => efb.WithText(GetText("stats_songs",
-                        Music.Music.MusicPlayers.Count(mp => mp.Value.CurrentSong != null),
+                        NadekoBot.MusicService.MusicPlayers.Count(mp => mp.Value.CurrentSong != null),
-                        Music.Music.MusicPlayers.Sum(mp => mp.Value.Playlist.Count))))
+                        NadekoBot.MusicService.MusicPlayers.Sum(mp => mp.Value.Playlist.Count))))
 #endif
                     );
         }

src/NadekoBot/NadekoBot.cs

@@ -18,6 +18,7 @@ using System.Diagnostics;
 using NadekoBot.Modules.Music;
 using NadekoBot.Services.Database.Models;
 using System.Threading;
+using NadekoBot.Services.Music;
 
 namespace NadekoBot
 {
@@ -49,6 +50,7 @@ namespace NadekoBot
         //services
         //todo DI in the future
         public static GreetSettingsService GreetSettingsService { get; private set; }
+        public static MusicService MusicService { get; private set; }
 
         static NadekoBot()
         {

src/NadekoBot/Services/GreetSettingsService.cs

@@ -1,4 +1,5 @@
 using NadekoBot.Extensions;
+using NadekoBot.Services;
 using NadekoBot.Services.Database.Models;
 using System;
 using System.Collections.Concurrent;
@@ -36,6 +37,41 @@ namespace NadekoBot.Services
             return settings;
         }
 
+        public async Task<bool> SetSettings(ulong guildId, GreetSettings settings)
+        {
+            if (settings.AutoDeleteByeMessagesTimer > 600 ||
+                settings.AutoDeleteByeMessagesTimer < 0 ||
+                settings.AutoDeleteGreetMessagesTimer > 600 ||
+                settings.AutoDeleteGreetMessagesTimer < 0)
+            {
+                return false;
+            }
+
+            using (var uow = DbHandler.UnitOfWork())
+            {
+                var conf = uow.GuildConfigs.For(guildId, set => set);
+                conf.DmGreetMessageText = settings.DmGreetMessageText?.SanitizeMentions();
+                conf.ChannelGreetMessageText = settings.ChannelGreetMessageText?.SanitizeMentions();
+                conf.ChannelByeMessageText = settings.ChannelByeMessageText?.SanitizeMentions();
+
+                conf.AutoDeleteGreetMessagesTimer = settings.AutoDeleteGreetMessagesTimer;
+                conf.AutoDeleteGreetMessages = settings.AutoDeleteGreetMessagesTimer > 0;
+
+                conf.AutoDeleteByeMessagesTimer = settings.AutoDeleteByeMessagesTimer;
+                conf.AutoDeleteByeMessages = settings.AutoDeleteByeMessagesTimer > 0;
+
+                conf.GreetMessageChannelId = settings.GreetMessageChannelId;
+                conf.ByeMessageChannelId = settings.ByeMessageChannelId;
+
+                conf.SendChannelGreetMessage = settings.SendChannelGreetMessage;
+                conf.SendChannelByeMessage = settings.SendChannelByeMessage;
+
+                await uow.CompleteAsync().ConfigureAwait(false);
+            }
+
+            return true;
+        }
+
         public async Task<bool> SetGreet(ulong guildId, ulong channelId, bool? value = null)
         {
             bool enabled;

src/NadekoBot/Services/Music/MusicControls.cs

@@ -11,7 +11,6 @@ using NLog;
 
 namespace NadekoBot.Modules.Music.Classes
 {
-
     public enum MusicType
     {
         Radio,

src/NadekoBot/Services/Music/MusicService.cs

@@ -0,0 +1,213 @@
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using NadekoBot.Modules.Music.Classes;
+using Discord;
+using NadekoBot.Extensions;
+using NadekoBot.Modules;
+
+namespace NadekoBot.Services.Music
+{
+    public class MusicService
+    {
+        private readonly IGoogleApiService _google;
+        public ConcurrentDictionary<ulong, MusicPlayer> MusicPlayers { get; } = new ConcurrentDictionary<ulong, MusicPlayer>();
+
+        public MusicService(IGoogleApiService google)
+        {
+            _google = google;
+        }
+
+        public MusicPlayer GetPlayer(ulong guildId)
+        {
+            MusicPlayers.TryGetValue(guildId, out var player);
+            return player;
+        }
+
+        public MusicPlayer GetOrCreatePlayer(ulong guildId, IVoiceChannel voiceCh, ITextChannel textCh)
+        {
+            string GetText(string text, params object[] replacements) =>
+                NadekoTopLevelModule.GetTextStatic(text, NadekoBot.Localization.GetCultureInfo(textCh.Guild), nameof(Modules.Music.Music).ToLowerInvariant(), replacements);
+
+            return MusicPlayers.GetOrAdd(guildId, server =>
+            {
+                float vol;// SpecificConfigurations.Default.Of(server.Id).DefaultMusicVolume;
+                using (var uow = DbHandler.UnitOfWork())
+                {
+                    //todo move to cached variable
+                    vol = uow.GuildConfigs.For(guildId, set => set).DefaultMusicVolume;
+                }
+                var mp = new MusicPlayer(voiceCh, textCh, vol);
+                IUserMessage playingMessage = null;
+                IUserMessage lastFinishedMessage = null;
+                mp.OnCompleted += async (s, song) =>
+                {
+                    try
+                    {
+                        lastFinishedMessage?.DeleteAfter(0);
+
+                        try
+                        {
+                            lastFinishedMessage = await mp.OutputTextChannel.EmbedAsync(new EmbedBuilder().WithOkColor()
+                                    .WithAuthor(eab => eab.WithName(GetText("finished_song")).WithMusicIcon())
+                                    .WithDescription(song.PrettyName)
+                                    .WithFooter(ef => ef.WithText(song.PrettyInfo)))
+                                .ConfigureAwait(false);
+                        }
+                        catch
+                        {
+                            // ignored
+                        }
+
+                        if (mp.Autoplay && mp.Playlist.Count == 0 && song.SongInfo.ProviderType == MusicType.Normal)
+                        {
+                            var relatedVideos = (await NadekoBot.Google.GetRelatedVideosAsync(song.SongInfo.Query, 4)).ToList();
+                            if (relatedVideos.Count > 0)
+                                await QueueSong(await textCh.Guild.GetCurrentUserAsync(),
+                                    textCh,
+                                    voiceCh,
+                                    relatedVideos[new NadekoRandom().Next(0, relatedVideos.Count)],
+                                    true).ConfigureAwait(false);
+                        }
+                    }
+                    catch
+                    {
+                        // ignored
+                    }
+                };
+
+                mp.OnStarted += async (player, song) =>
+                {
+                    try { await mp.UpdateSongDurationsAsync().ConfigureAwait(false); }
+                    catch
+                    {
+                        // ignored
+                    }
+                    var sender = player;
+                    if (sender == null)
+                        return;
+                    try
+                    {
+                        playingMessage?.DeleteAfter(0);
+
+                        playingMessage = await mp.OutputTextChannel.EmbedAsync(new EmbedBuilder().WithOkColor()
+                                                    .WithAuthor(eab => eab.WithName(GetText("playing_song")).WithMusicIcon())
+                                                    .WithDescription(song.PrettyName)
+                                                    .WithFooter(ef => ef.WithText(song.PrettyInfo)))
+                                                    .ConfigureAwait(false);
+                    }
+                    catch
+                    {
+                        // ignored
+                    }
+                };
+                mp.OnPauseChanged += async (paused) =>
+                {
+                    try
+                    {
+                        IUserMessage msg;
+                        if (paused)
+                            msg = await mp.OutputTextChannel.SendConfirmAsync(GetText("paused")).ConfigureAwait(false);
+                        else
+                            msg = await mp.OutputTextChannel.SendConfirmAsync(GetText("resumed")).ConfigureAwait(false);
+
+                        msg?.DeleteAfter(10);
+                    }
+                    catch
+                    {
+                        // ignored
+                    }
+                };
+
+                mp.SongRemoved += async (song, index) =>
+                {
+                    try
+                    {
+                        var embed = new EmbedBuilder()
+                            .WithAuthor(eab => eab.WithName(GetText("removed_song") + " #" + (index + 1)).WithMusicIcon())
+                            .WithDescription(song.PrettyName)
+                            .WithFooter(ef => ef.WithText(song.PrettyInfo))
+                            .WithErrorColor();
+
+                        await mp.OutputTextChannel.EmbedAsync(embed).ConfigureAwait(false);
+
+                    }
+                    catch
+                    {
+                        // ignored
+                    }
+                };
+                return mp;
+            });
+        }
+
+
+        public async Task QueueSong(IGuildUser queuer, ITextChannel textCh, IVoiceChannel voiceCh, string query, bool silent = false, MusicType musicType = MusicType.Normal)
+        {
+            string GetText(string text, params object[] replacements) => 
+                NadekoTopLevelModule.GetTextStatic(text, NadekoBot.Localization.GetCultureInfo(textCh.Guild), nameof(Modules.Music.Music).ToLowerInvariant(), replacements);
+
+            if (voiceCh == null || voiceCh.Guild != textCh.Guild)
+            {
+                if (!silent)
+                    await textCh.SendErrorAsync(GetText("must_be_in_voice")).ConfigureAwait(false);
+                throw new ArgumentNullException(nameof(voiceCh));
+            }
+            if (string.IsNullOrWhiteSpace(query) || query.Length < 3)
+                throw new ArgumentException("Invalid song query.", nameof(query));
+
+            var musicPlayer = GetOrCreatePlayer(textCh.Guild.Id, voiceCh, textCh);
+            Song resolvedSong;
+            try
+            {
+                musicPlayer.ThrowIfQueueFull();
+                resolvedSong = await SongHandler.ResolveSong(query, musicType).ConfigureAwait(false);
+
+                if (resolvedSong == null)
+                    throw new SongNotFoundException();
+
+                musicPlayer.AddSong(resolvedSong, queuer.Username);
+            }
+            catch (PlaylistFullException)
+            {
+                try
+                {
+                    await textCh.SendConfirmAsync(GetText("queue_full", musicPlayer.MaxQueueSize));
+                }
+                catch
+                {
+                    // ignored
+                }
+                throw;
+            }
+            if (!silent)
+            {
+                try
+                {
+                    //var queuedMessage = await textCh.SendConfirmAsync($"🎵 Queued **{resolvedSong.SongInfo.Title}** at `#{musicPlayer.Playlist.Count + 1}`").ConfigureAwait(false);
+                    var queuedMessage = await textCh.EmbedAsync(new EmbedBuilder().WithOkColor()
+                                                            .WithAuthor(eab => eab.WithName(GetText("queued_song") + " #" + (musicPlayer.Playlist.Count + 1)).WithMusicIcon())
+                                                            .WithDescription($"{resolvedSong.PrettyName}\n{GetText("queue")} ")
+                                                            .WithThumbnailUrl(resolvedSong.Thumbnail)
+                                                            .WithFooter(ef => ef.WithText(resolvedSong.PrettyProvider)))
+                                                            .ConfigureAwait(false);
+                    queuedMessage?.DeleteAfter(10);
+                }
+                catch
+                {
+                    // ignored
+                } // if queued message sending fails, don't attempt to delete it
+            }
+        }
+
+        internal void DestroyPlayer(ulong id)
+        {
+            throw new NotImplementedException();
+        }
+
+
+    }
+}