Merge pull request #10 from Kwoth/dev

Dev

DockerGuide.md

@@ -0,0 +1,47 @@
+## Docker guide with digitalocean
+
+#####Prerequisites:
+- Digital ocean account (you can use my reflink to support the project and get 10$ after you register http://m.do.co/c/46b4d3d44795/ )
+- Putty (get it here http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html)
+- A bot account - (follow http://discord.kongslien.net/guide.html)
+- Common sense
+
+Click on the create droplet button
+![img](http://i.imgur.com/g2ayOcC.png)
+
+pick one click apps and select docker on 14.04 
+
+![img](http://imgur.com/065Xkme.png)
+
+- pick any droplet size you want (5$ will work ok-ish on a few servers)
+- pick location closest to your discord server's location
+- Pick a hostname  
+![img](http://imgur.com/ifPKB6p.png)
+
+- click create 
+
+You will get an email from digitalocean with your creds now.
+
+Open putty and type ip adress **you got in your email** with port 22  
+
+![img](http://imgur.com/Mh5ehsh.png)
+
+console will open and you will be prompted for a username, type `root`  
+type in the password you got in the email  
+confirm the password you just typed in  
+type in the new password  
+confirm new password  
+
+when you are successfully logged in, type   
+`docker run --name nadeko -v /nadeko:/config uirel/nadeko`
+
+wait for it to download and at one point it is going to start throwing errors due to credentials.json being empty  
+CTRL+C to exit that  
+type `docker stop nadeko`  
+type `nano /nadeko/credentials.json` and type in your credentials  
+CTRL+X then CTRL+Y to save  
+type `docker start nadeko`  
+
+Your bot is running, enjoy
+
+*When you want to update the bot, just type `docker restart nadeko` as it always downloads latest prerelease*

NadekoBot/Classes/SearchHelper.cs

@@ -175,7 +175,7 @@ namespace NadekoBot.Classes
                 return null;
         }
 
-        public static async Task<string> GetRelatedVideoId(string id)
+        public static async Task<IEnumerable<string>> GetRelatedVideoIds(string id, int count = 1)
         {
             if (string.IsNullOrWhiteSpace(id))
                 throw new ArgumentNullException(nameof(id));
@@ -186,20 +186,14 @@ namespace NadekoBot.Classes
             }
             var response = await GetResponseStringAsync(
                                     $"https://www.googleapis.com/youtube/v3/search?" +
-                                    $"part=snippet&maxResults=1&type=video" +
+                                    $"part=snippet&maxResults={count}&type=video" +
                                     $"&relatedToVideoId={id}" +
                                     $"&key={NadekoBot.Creds.GoogleAPIKey}").ConfigureAwait(false);
             JObject obj = JObject.Parse(response);
 
             var data = JsonConvert.DeserializeObject<YoutubeVideoSearch>(response);
 
-            if (data.items.Length > 0)
+            return data.items.Select(v => "http://www.youtube.com/watch?v=" + v.id.videoId);
-            {
-                var toReturn = "http://www.youtube.com/watch?v=" + data.items[0].id.videoId.ToString();
-                return toReturn;
-            }
-            else
-                return null;
         }
 
         public static async Task<string> GetPlaylistIdByKeyword(string query)

NadekoBot/Modules/Administration/Commands/AutoAssignRole.cs

@@ -34,7 +34,7 @@ namespace NadekoBot.Modules.Administration.Commands
         {
             cgb.CreateCommand(Module.Prefix + "autoassignrole")
                 .Alias(Module.Prefix + "aar")
-                .Description($"Automaticaly assigns a specified role to every user who joins the server. Type `{Prefix}aar` to disable, `{Prefix}aar Role Name` to enable")
+                .Description($"Automaticaly assigns a specified role to every user who joins the server. |`{Prefix}aar` to disable, `{Prefix}aar Role Name` to enable")
                 .Parameter("role", ParameterType.Unparsed)
                 .AddCheck(new SimpleCheckers.ManageRoles())
                 .Do(async e =>

NadekoBot/Modules/Administration/Commands/LogCommand.cs

@@ -4,7 +4,10 @@ using NadekoBot.Classes;
 using NadekoBot.Extensions;
 using NadekoBot.Modules.Permissions.Classes;
 using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
 using System.Linq;
+using System.Threading.Tasks;
 
 namespace NadekoBot.Modules.Administration.Commands
 {
@@ -12,6 +15,8 @@ namespace NadekoBot.Modules.Administration.Commands
     {
         private string prettyCurrentTime => $"【{DateTime.Now:HH:mm:ss}】";
 
+        private ConcurrentBag<KeyValuePair<Channel, string>> voicePresenceUpdates = new ConcurrentBag<KeyValuePair<Channel, string>>();
+
         public LogCommand(DiscordModule module) : base(module)
         {
             NadekoBot.Client.MessageReceived += MsgRecivd;
@@ -45,6 +50,36 @@ namespace NadekoBot.Modules.Administration.Commands
                 }
                 catch { }
             };
+
+            // start the userpresence queue
+
+            NadekoBot.OnReady += () => Task.Run(async () =>
+             {
+                 while (true)
+                 {
+                     var toSend = new Dictionary<Channel, string>();
+                     //take everything from the queue and merge the messages which are going to the same channel
+                     KeyValuePair<Channel, string> item;
+                     while (voicePresenceUpdates.TryTake(out item))
+                     {
+                         if (toSend.ContainsKey(item.Key))
+                         {
+                             toSend[item.Key] = toSend[item.Key] + Environment.NewLine + item.Value;
+                         }
+                         else
+                         {
+                             toSend.Add(item.Key, item.Value);
+                         }
+                     }
+                     //send merged messages to each channel
+                     foreach (var k in toSend)
+                     {
+                         try { await k.Key.SendMessage(Environment.NewLine + k.Value).ConfigureAwait(false); } catch { }
+                     }
+
+                     await Task.Delay(5000);
+                 }
+             });
         }
 
         private async void ChannelUpdated(object sender, ChannelUpdatedEventArgs e)
@@ -177,13 +212,13 @@ namespace NadekoBot.Modules.Administration.Commands
                 if (!string.IsNullOrWhiteSpace(e.Message.Text))
                 {
                     await ch.SendMessage(
-    $@"🕔`{prettyCurrentTime}` **New Message** `#{e.Channel.Name}`
+        $@"🕔`{prettyCurrentTime}` **New Message** `#{e.Channel.Name}`
 👤`{e.User?.ToString() ?? ("NULL")}` {e.Message.Text.Unmention()}").ConfigureAwait(false);
                 }
                 else
                 {
                     await ch.SendMessage(
-    $@"🕔`{prettyCurrentTime}` **File Uploaded** `#{e.Channel.Name}`
+        $@"🕔`{prettyCurrentTime}` **File Uploaded** `#{e.Channel.Name}`
 👤`{e.User?.ToString() ?? ("NULL")}` {e.Message.Attachments.FirstOrDefault()?.ProxyUrl}").ConfigureAwait(false);
                 }
 
@@ -206,13 +241,13 @@ namespace NadekoBot.Modules.Administration.Commands
                 if (!string.IsNullOrWhiteSpace(e.Message.Text))
                 {
                     await ch.SendMessage(
-    $@"🕔`{prettyCurrentTime}` **Message** 🚮 `#{e.Channel.Name}`
+        $@"🕔`{prettyCurrentTime}` **Message** 🚮 `#{e.Channel.Name}`
 👤`{e.User?.ToString() ?? ("NULL")}` {e.Message.Text.Unmention()}").ConfigureAwait(false);
                 }
                 else
                 {
                     await ch.SendMessage(
-    $@"🕔`{prettyCurrentTime}` **File Deleted** `#{e.Channel.Name}`
+        $@"🕔`{prettyCurrentTime}` **File Deleted** `#{e.Channel.Name}`
 👤`{e.User?.ToString() ?? ("NULL")}` {e.Message.Attachments.FirstOrDefault()?.ProxyUrl}").ConfigureAwait(false);
                 }
             }
@@ -232,7 +267,7 @@ namespace NadekoBot.Modules.Administration.Commands
                 if ((ch = e.Server.TextChannels.Where(tc => tc.Id == chId).FirstOrDefault()) == null)
                     return;
                 await ch.SendMessage(
-$@"🕔`{prettyCurrentTime}` **Message** 📝 `#{e.Channel.Name}`
+        $@"🕔`{prettyCurrentTime}` **Message** 📝 `#{e.Channel.Name}`
 👤`{e.User?.ToString() ?? ("NULL")}`
         `Old:` {e.Before.Text.Unmention()}
         `New:` {e.After.Text.Unmention()}").ConfigureAwait(false);
@@ -252,7 +287,7 @@ $@"🕔`{prettyCurrentTime}` **Message** 📝 `#{e.Channel.Name}`
                     {
                         if (e.Before.Status != e.After.Status)
                         {
-                            await ch.SendMessage($"`{prettyCurrentTime}`**{e.Before.Name}** is now **{e.After.Status}**.").ConfigureAwait(false);
+                            voicePresenceUpdates.Add(new KeyValuePair<Channel, string>(ch, $"`{prettyCurrentTime}`**{e.Before.Name}** is now **{e.After.Status}**."));
                         }
                     }
                 }
@@ -372,7 +407,7 @@ $@"🕔`{prettyCurrentTime}` **Message** 📝 `#{e.Channel.Name}`
                       if ((ch = e.Server.TextChannels.Where(tc => tc.Id == chId).FirstOrDefault()) == null)
                           return;
 
-                      SpecificConfigurations.Default.Of (e.Server.Id).LogServerChannel = null;
+                      SpecificConfigurations.Default.Of(e.Server.Id).LogServerChannel = null;
                       await e.Channel.SendMessage($"❗**NO LONGER LOGGING IN {ch.Mention} CHANNEL**❗").ConfigureAwait(false);
                   });
 

NadekoBot/Modules/Administration/Commands/MessageRepeater.cs

@@ -57,7 +57,7 @@ namespace NadekoBot.Modules.Administration.Commands
 
             cgb.CreateCommand(Module.Prefix + "repeatinvoke")
                 .Alias(Module.Prefix + "repinv")
-                .Description("Immediately shows the repeat message and restarts the timer. | `{Prefix}repinv`")
+                .Description($"Immediately shows the repeat message and restarts the timer. | `{Prefix}repinv`")
                 .AddCheck(SimpleCheckers.ManageMessages())
                 .Do(async e =>
                 {

NadekoBot/Modules/Games/Commands/BetrayGame.cs

@@ -20,7 +20,7 @@ namespace NadekoBot.Modules.Games.Commands
             cgb.CreateCommand(Module.Prefix + "betray")
                 .Description("BETRAY GAME. Betray nadeko next turn." +
                              "If Nadeko cooperates - you get extra points, nadeko loses a LOT." +
-                             "If Nadeko betrays - you both lose some points. | `{Prefix}betray`")
+                             $"If Nadeko betrays - you both lose some points. | `{Prefix}betray`")
                 .Do(async e =>
                 {
                     await ReceiveAnswer(e, Answers.Betray).ConfigureAwait(false);
@@ -29,7 +29,7 @@ namespace NadekoBot.Modules.Games.Commands
             cgb.CreateCommand(Module.Prefix + "cooperate")
                 .Description("BETRAY GAME. Cooperate with nadeko next turn." +
                              "If Nadeko cooperates - you both get bonus points." +
-                             "If Nadeko betrays - you lose A LOT, nadeko gets extra. | `{Prefix}cooperater`")
+                             $"If Nadeko betrays - you lose A LOT, nadeko gets extra. | `{Prefix}cooperater`")
                 .Do(async e =>
                 {
 

NadekoBot/Modules/Help/Commands/HelpCommand.cs

@@ -48,12 +48,11 @@ namespace NadekoBot.Classes.Help.Commands
         public Action<CommandEventArgs> DoGitFunc() => e =>
         {
             string helpstr =
-$@"######For more information and how to setup your own NadekoBot, go to: **http://github.com/Kwoth/NadekoBot/**
+$@"######For more information and how to setup your own NadekoBot, go to: <http://github.com/Kwoth/NadekoBot/wiki>
-######You can donate on patreon: `https://patreon.com/nadekobot`
+######You can donate on patreon: <https://patreon.com/nadekobot>
 ######or paypal: `nadekodiscordbot@gmail.com`
 
-#NadekoBot List Of Commands  
+#NadekoBot List Of Commands  ";
-Version: `{NadekoStats.Instance.BotVersion}`";
 
 
             string lastCategory = "";
@@ -81,7 +80,7 @@ Version: `{NadekoStats.Instance.BotVersion}`";
         {
             cgb.CreateCommand(Module.Prefix + "h")
                 .Alias(Module.Prefix + "help", NadekoBot.BotMention + " help", NadekoBot.BotMention + " h", "~h")
-                .Description("Either shows a help for a single command, or PMs you help link if no arguments are specified. | `-h !m q` or just `-h` ")
+                .Description($"Either shows a help for a single command, or PMs you help link if no arguments are specified. | `{Prefix}h !m q` or just `{Prefix}h` ")
                 .Parameter("command", ParameterType.Unparsed)
                 .Do(HelpFunc());
             cgb.CreateCommand(Module.Prefix + "hgit")
@@ -103,7 +102,7 @@ Version: `{NadekoStats.Instance.BotVersion}`";
 
             cgb.CreateCommand(Module.Prefix + "donate")
                 .Alias("~donate")
-                .Description("Instructions for helping the project! | `{Prefix}donate` or `~donate`")
+                .Description($"Instructions for helping the project! | `{Prefix}donate` or `~donate`")
                 .Do(async e =>
                 {
                     await e.Channel.SendMessage(

NadekoBot/Modules/Help/HelpModule.cs

@@ -29,7 +29,7 @@ namespace NadekoBot.Modules.Help
 
                 cgb.CreateCommand(Prefix + "modules")
                     .Alias(".modules")
-                    .Description("List all bot modules. | `{Prefix}modules` or `.modules`")
+                    .Description($"List all bot modules. | `{Prefix}modules` or `.modules`")
                     .Do(async e =>
                     {
                         await e.Channel.SendMessage("`List of modules:` \n• " + string.Join("\n• ", NadekoBot.Client.GetService<ModuleService>().Modules.Select(m => m.Name)) + $"\n`Type \"{Prefix}commands module_name\" to get a list of commands in that module.`")
@@ -38,7 +38,7 @@ namespace NadekoBot.Modules.Help
 
                 cgb.CreateCommand(Prefix + "commands")
                     .Alias(".commands")
-                    .Description("List all of the bot's commands from a certain module. | `{Prefix}commands` or `.commands`")
+                    .Description($"List all of the bot's commands from a certain module. | `{Prefix}commands` or `.commands`")
                     .Parameter("module", ParameterType.Unparsed)
                     .Do(async e =>
                     {

NadekoBot/Modules/Music/Classes/MusicControls.cs

@@ -34,7 +34,7 @@ namespace NadekoBot.Modules.Music.Classes
         public IReadOnlyCollection<Song> Playlist => playlist;
 
         public Song CurrentSong { get; private set; }
-        private CancellationTokenSource SongCancelSource { get; set; }
+        public CancellationTokenSource SongCancelSource { get; private set; }
         private CancellationToken cancelToken { get; set; }
 
         public bool Paused { get; set; }

NadekoBot/Modules/Music/Classes/Song.cs

@@ -32,7 +32,6 @@ namespace NadekoBot.Modules.Music.Classes
         public SongInfo SongInfo { get; }
         public string QueuerName { get; set; }
 
-        private bool bufferingCompleted { get; set; } = false;
         public MusicPlayer MusicPlayer { get; set; }
 
         public string PrettyCurrentTime()
@@ -73,78 +72,22 @@ namespace NadekoBot.Modules.Music.Classes
             return this;
         }
 
-        private Task BufferSong(string filename, CancellationToken cancelToken) =>
-            Task.Factory.StartNew(async () =>
-            {
-                Process p = null;
-                try
-                {
-                    p = Process.Start(new ProcessStartInfo
-                    {
-                        FileName = "ffmpeg",
-                        Arguments = $"-ss {skipTo} -i {SongInfo.Uri} -f s16le -ar 48000 -ac 2 pipe:1 -loglevel quiet",
-                        UseShellExecute = false,
-                        RedirectStandardOutput = true,
-                        RedirectStandardError = false,
-                        CreateNoWindow = true,
-                    });
-                    var prebufferSize = 100ul.MiB();
-                    using (var outStream = new FileStream(filename, FileMode.Append, FileAccess.Write, FileShare.Read))
-                    {
-                        byte[] buffer = new byte[81920];
-                        int bytesRead;
-                        while ((bytesRead = await p.StandardOutput.BaseStream.ReadAsync(buffer, 0, buffer.Length, cancelToken).ConfigureAwait(false)) != 0)
-                        {
-                            await outStream.WriteAsync(buffer, 0, bytesRead, cancelToken).ConfigureAwait(false);
-                            while ((ulong)outStream.Length - bytesSent > prebufferSize)
-                                await Task.Delay(100, cancelToken);
-                        }
-                    }
-                        
-                    bufferingCompleted = true;
-                }
-                catch (System.ComponentModel.Win32Exception) {
-                    var oldclr = Console.ForegroundColor;
-                    Console.ForegroundColor = ConsoleColor.Red;
-                    Console.WriteLine(@"You have not properly installed or configured FFMPEG. 
-Please install and configure FFMPEG to play music. 
-Check the guides for your platform on how to setup ffmpeg correctly:
-    Windows Guide: https://goo.gl/SCv72y
-    Linux Guide:  https://goo.gl/rRhjCp");
-                    Console.ForegroundColor = oldclr;
-                }
-                catch (Exception ex)
-                {
-                    Console.WriteLine($"Buffering stopped: {ex.Message}");
-                }
-                finally
-                {
-                    Console.WriteLine($"Buffering done.");
-                    if (p != null)
-                    {
-                        try
-                        {
-                            p.Kill();
-                        }
-                        catch { }
-                        p.Dispose();
-                    }
-                }
-            }, TaskCreationOptions.LongRunning);
-
         internal async Task Play(IAudioClient voiceClient, CancellationToken cancelToken)
         {
             var filename = Path.Combine(MusicModule.MusicDataPath, DateTime.Now.UnixTimestamp().ToString());
 
-            var bufferTask = BufferSong(filename, cancelToken).ConfigureAwait(false);
+            SongBuffer sb = new SongBuffer(filename, SongInfo, skipTo);
+            var bufferTask = sb.BufferSong(cancelToken).ConfigureAwait(false);
 
-            var inStream = new FileStream(filename, FileMode.OpenOrCreate, FileAccess.Read, FileShare.Write);
+            var inStream = new FileStream(sb.GetNextFile(), FileMode.OpenOrCreate, FileAccess.Read, FileShare.Write); ;
 
             bytesSent = 0;
 
             try
             {
-                var prebufferingTask = CheckPrebufferingAsync(inStream, cancelToken);
+                var attempt = 0;             
+
+                var prebufferingTask = CheckPrebufferingAsync(inStream, sb, cancelToken);
                 var sw = new Stopwatch();
                 sw.Start();
                 var t = await Task.WhenAny(prebufferingTask, Task.Delay(5000, cancelToken));
@@ -162,7 +105,6 @@ Check the guides for your platform on how to setup ffmpeg correctly:
                 Console.WriteLine("Prebuffering successfully completed in "+ sw.Elapsed);
 
                 const int blockSize = 3840;
-                var attempt = 0;
                 byte[] buffer = new byte[blockSize];
                 while (!cancelToken.IsCancellationRequested)
                 {
@@ -173,14 +115,31 @@ Check the guides for your platform on how to setup ffmpeg correctly:
                     {
                         bytesSent += (ulong)read;
                     }
-                    if (read == 0)
+                    if (read < blockSize)
-                        if (attempt++ == 20)
+                    {
+                        if (sb.IsNextFileReady())
                         {
-                            voiceClient.Wait();
+                            inStream.Dispose();
-                            break;
+                            inStream = new FileStream(sb.GetNextFile(), FileMode.Open, FileAccess.Read, FileShare.Write);
+                            read += inStream.Read(buffer, read, buffer.Length - read);
+                            attempt = 0;
+                        }
+                        if (read == 0)
+                        {
+                            if (sb.BufferingCompleted)
+                                break;
+                            if (attempt++ == 20)
+                            {
+                                voiceClient.Wait();
+                                MusicPlayer.SongCancelSource.Cancel();
+                                break;
+                            }
+                            else
+                                await Task.Delay(100, cancelToken).ConfigureAwait(false);                         
                         }
                         else
-                            await Task.Delay(100, cancelToken).ConfigureAwait(false);
+                            attempt = 0;
+                    }
                     else
                         attempt = 0;
 
@@ -195,14 +154,16 @@ Check the guides for your platform on how to setup ffmpeg correctly:
             {
                 await bufferTask;
                 await Task.Run(() => voiceClient.Clear());
-                inStream.Dispose();
+                if(inStream != null)
-                try { File.Delete(filename); } catch { }
+                    inStream.Dispose();
+                Console.WriteLine("l");
+                sb.CleanFiles();
             }
         }
 
-        private async Task CheckPrebufferingAsync(Stream inStream, CancellationToken cancelToken)
+        private async Task CheckPrebufferingAsync(Stream inStream, SongBuffer sb, CancellationToken cancelToken)
         {
-            while (!bufferingCompleted && inStream.Length < 2.MiB())
+            while (!sb.BufferingCompleted && inStream.Length < 2.MiB())
             {
                 await Task.Delay(100, cancelToken);
             }

NadekoBot/Modules/Music/Classes/SongBuffer.cs

@@ -0,0 +1,159 @@
+using NadekoBot.Extensions;
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace NadekoBot.Modules.Music.Classes
+{
+    /// <summary>
+    /// Create a buffer for a song file. It will create multiples files to ensure, that radio don't fill up disk space.
+    /// It also help for large music by deleting files that are already seen.
+    /// </summary>
+    class SongBuffer
+    {
+
+        public SongBuffer(string basename, SongInfo songInfo, int skipTo)
+        {
+            Basename = basename;
+            SongInfo = songInfo;
+            SkipTo = skipTo;
+        }
+
+        private string Basename;
+
+        private SongInfo SongInfo;
+
+        private int SkipTo;
+
+        private static int MAX_FILE_SIZE = 20.MiB();
+
+        private long FileNumber = -1;
+
+        private long NextFileToRead = 0;
+
+        public bool BufferingCompleted { get; private set;} = false;
+
+        private ulong CurrentBufferSize = 0;
+
+        public Task BufferSong(CancellationToken cancelToken) =>
+           Task.Factory.StartNew(async () =>
+           {
+               Process p = null;
+               FileStream outStream = null;
+               try
+               {
+                   p = Process.Start(new ProcessStartInfo
+                   {
+                       FileName = "ffmpeg",
+                       Arguments = $"-ss {SkipTo} -i {SongInfo.Uri} -f s16le -ar 48000 -ac 2 pipe:1 -loglevel quiet",
+                       UseShellExecute = false,
+                       RedirectStandardOutput = true,
+                       RedirectStandardError = false,
+                       CreateNoWindow = true,
+                   });
+
+                   byte[] buffer = new byte[81920];
+                   int currentFileSize = 0;
+                   ulong prebufferSize = 100ul.MiB();
+
+                   outStream = new FileStream(Basename + "-" + ++FileNumber, FileMode.Append, FileAccess.Write, FileShare.Read);
+                   while (!p.HasExited) //Also fix low bandwidth
+                   {
+                       int bytesRead = await p.StandardOutput.BaseStream.ReadAsync(buffer, 0, buffer.Length, cancelToken).ConfigureAwait(false);
+                       if (currentFileSize >= MAX_FILE_SIZE)
+                       {
+                           try
+                           {
+                               outStream.Dispose();
+                           }catch { }
+                           outStream = new FileStream(Basename + "-" + ++FileNumber, FileMode.Append, FileAccess.Write, FileShare.Read);
+                           currentFileSize = bytesRead;
+                       }
+                       else
+                       {
+                           currentFileSize += bytesRead;
+                       }
+                       CurrentBufferSize += Convert.ToUInt64(bytesRead);
+                       await outStream.WriteAsync(buffer, 0, bytesRead, cancelToken).ConfigureAwait(false);
+                       while (CurrentBufferSize > prebufferSize)
+                           await Task.Delay(100, cancelToken);
+                   }
+                   BufferingCompleted = true;
+               }
+               catch (System.ComponentModel.Win32Exception)
+               {
+                   var oldclr = Console.ForegroundColor;
+                   Console.ForegroundColor = ConsoleColor.Red;
+                   Console.WriteLine(@"You have not properly installed or configured FFMPEG. 
+Please install and configure FFMPEG to play music. 
+Check the guides for your platform on how to setup ffmpeg correctly:
+    Windows Guide: https://goo.gl/SCv72y
+    Linux Guide:  https://goo.gl/rRhjCp");
+                   Console.ForegroundColor = oldclr;
+               }
+               catch (Exception ex)
+               {
+                   Console.WriteLine($"Buffering stopped: {ex.Message}");
+               }
+               finally
+               {
+                   if(outStream != null)
+                        outStream.Dispose();
+                   Console.WriteLine($"Buffering done.");
+                   if (p != null)
+                   {
+                       try
+                       {
+                           p.Kill();
+                       }
+                       catch { }
+                       p.Dispose();
+                   }
+               }
+           }, TaskCreationOptions.LongRunning);
+
+        /// <summary>
+        /// Return the next file to read, and delete the old one
+        /// </summary>
+        /// <returns>Name of the file to read</returns>
+        public string GetNextFile()
+        {
+            string filename = Basename + "-" + NextFileToRead;
+            
+            if (NextFileToRead != 0)
+            {
+                try
+                {
+                    CurrentBufferSize -= Convert.ToUInt64(new FileInfo(Basename + "-" + (NextFileToRead - 1)).Length);
+                    File.Delete(Basename + "-" + (NextFileToRead - 1));
+                }
+                catch { }
+            }
+            NextFileToRead++;
+            return filename;
+        }
+
+        public bool IsNextFileReady()
+        {
+            return NextFileToRead <= FileNumber;
+        }
+
+        public void CleanFiles()
+        {
+            for (long i = NextFileToRead - 1 ; i <= FileNumber; i++)
+            {
+                try
+                {
+                    File.Delete(Basename + "-" + i);
+                }
+                catch { }
+            }
+        }
+    }
+}

NadekoBot/Modules/Music/MusicModule.cs

@@ -773,11 +773,13 @@ namespace NadekoBot.Modules.Music
                             {
                                 await e.Channel.SendMessage("Could not select song, likely wrong index");
 
-                            } else
+                            }
+                            else
                             {
                                 await e.Channel.SendMessage($"🎶`Selected song {selSong.SongInfo.Title}:` <{selSong.SongInfo.Query}>").ConfigureAwait(false);
                             }
-                        } else
+                        }
+                        else
                         {
                             var curSong = musicPlayer.CurrentSong;
                             if (curSong == null)
@@ -837,7 +839,7 @@ namespace NadekoBot.Modules.Music
                             lastFinishedMessage = await textCh.SendMessage($"🎵`Finished`{song.PrettyName}").ConfigureAwait(false);
                             if (mp.Autoplay && mp.Playlist.Count == 0 && song.SongInfo.Provider == "YouTube")
                             {
-                                await QueueSong(queuer, textCh, voiceCh, await SearchHelper.GetRelatedVideoId(song.SongInfo.Query), silent, musicType).ConfigureAwait(false);
+                                await QueueSong(queuer.Server.CurrentUser, textCh, voiceCh, (await SearchHelper.GetRelatedVideoIds(song.SongInfo.Query, 4)).ToList().Shuffle().FirstOrDefault(), silent, musicType).ConfigureAwait(false);
                             }
                         }
                         catch (Exception e)

NadekoBot/Modules/Translator/ValidLanguagesCommand.cs

@@ -13,7 +13,7 @@ namespace NadekoBot.Modules.Translator
         internal override void Init(CommandGroupBuilder cgb)
         {
             cgb.CreateCommand(Module.Prefix + "translangs")
-                .Description("List the valid languages for translation. | `{Prefix}translangs` or `{Prefix}translangs language`")
+                .Description($"List the valid languages for translation. | `{Prefix}translangs` or `{Prefix}translangs language`")
                 .Parameter("search", ParameterType.Optional)
                 .Do(ListLanguagesFunc());
         }

NadekoBot/Modules/Trello/TrelloModule.cs

@@ -92,7 +92,7 @@ namespace NadekoBot.Modules.Trello
                     });
 
                 cgb.CreateCommand(Prefix + "unbind")
-                    .Description("Unbinds a bot from the channel and board.")
+                    .Description($"Unbinds a bot from the channel and board. | `{Prefix}unbind`")
                     .Do(async e =>
                     {
                         if (!NadekoBot.IsOwner(e.User.Id)) return;
@@ -106,7 +106,7 @@ namespace NadekoBot.Modules.Trello
 
                 cgb.CreateCommand(Prefix + "lists")
                     .Alias(Prefix + "list")
-                    .Description("Lists all lists yo ;)")
+                    .Description($"Lists all lists yo ;) | {Prefix}list")
                     .Do(async e =>
                     {
                         if (!NadekoBot.IsOwner(e.User.Id)) return;

NadekoBot/NadekoBot.csproj

@@ -231,6 +231,7 @@
     <Compile Include="Modules\Music\Classes\MusicControls.cs" />
     <Compile Include="Modules\Music\Classes\PoopyBuffer.cs" />
     <Compile Include="Modules\Music\Classes\Song.cs" />
+	<Compile Include="Modules\Music\Classes\SongBuffer.cs" />
     <Compile Include="Modules\Music\Classes\SoundCloud.cs" />
     <Compile Include="Modules\Permissions\Classes\PermissionChecker.cs" />
     <Compile Include="Modules\Permissions\Classes\PermissionHelper.cs" />