Added leave announce and info when bot is PMed

NadekoBot/Modules/Administration.cs

@@ -298,6 +298,8 @@ namespace NadekoBot.Modules
                     .Do(e => {
                         NadekoBot.client.Servers.ForEach(async s => { if (s.Name == "NadekoLog" || s.Name == "Discord Bots") return; await s.Leave(); });
                     });
+
+
                 cgb.CreateCommand(".prune")
                     .Parameter("num", ParameterType.Required)
                     .Description("Prunes a number of messages from the current channel.\n**Usage**: .prune 50")
@@ -353,13 +355,13 @@ namespace NadekoBot.Modules
                     .Description("Enables or Disables anouncements on the current channel when someone joins the server.")
                     .Do(async e => {
                         if (e.User.Id != NadekoBot.OwnerID) return;
-                        announcing = !announcing;
+                        announcingGreet = !announcingGreet;
                         
-                        if (announcing) {
+                        if (announcingGreet) {
                             announceChannel = e.Channel;
                             joinServer = e.Server;
                             NadekoBot.client.UserJoined += Client_UserJoined;
-                            await e.Send("Announcements enabled on this channel.");
+                            await e.Send("Greet announcements enabled on this channel.");
                         } else {
                             announceChannel = null;
                             joinServer = null;
@@ -368,6 +370,25 @@ namespace NadekoBot.Modules
                         }
                     });
 
+                cgb.CreateCommand(".bye")
+                    .Description("Enables or Disables anouncements on the current channel when someone leaves the server.")
+                    .Do(async e => {
+                        if (e.User.Id != NadekoBot.OwnerID) return;
+                        announcingLeave = !announcingLeave;
+
+                        if (announcingLeave) {
+                            announceLeaveChannel = e.Channel;
+                            leaveServer = e.Server;
+                            NadekoBot.client.UserJoined += Client_UserJoined;
+                            await e.Send("Leave announcements enabled on this channel.");
+                        } else {
+                            announceLeaveChannel = null;
+                            leaveServer = null;
+                            NadekoBot.client.UserLeft -= Client_UserLeft;
+                            await e.Send("Leave announcements disabled.");
+                        }
+                    });
+
                 cgb.CreateCommand(".greetmsg")
                     .Description("Sets a new announce message. Type %user% if you want to mention the new member.\n**Usage**: .greetmsg Welcome to the server, %user%.")
                     .Parameter("msg",ParameterType.Unparsed)
@@ -380,7 +401,7 @@ namespace NadekoBot.Modules
 
         }
 
-        bool announcing = false;
+        bool announcingGreet = false;
         Channel announceChannel = null;
         Server joinServer = null;
         string announceMsg = "Welcome to the server %user%";
@@ -394,5 +415,19 @@ namespace NadekoBot.Modules
             }
 
         }
+        bool announcingLeave = false;
+        Channel announceLeaveChannel = null;
+        Server leaveServer = null;
+        string announceLeaveMsg = "Welcome to the server %user%";
+
+        private void Client_UserLeft(object sender, UserEventArgs e) {
+            if (e.Server != leaveServer) return;
+            try {
+                announceLeaveChannel?.Send(announceLeaveMsg.Replace("%user%", e.User.Mention));
+            } catch (Exception) {
+                Console.WriteLine("Failed sending leave message to the specified channel.");
+            }
+
+        }
     }
 }

NadekoBot/Modules/Music.cs

@@ -95,8 +95,9 @@ namespace NadekoBot.Modules {
                         
                         if (video?.Uri != "" && video.Uri != null) {
                             SongQueue.Add(video);
-                            if(SongQueue.Count > 1)
                             await e.Send("**Queued** " + video.FullName);
+                        } else {
+                            await e.Send("Failed to load that song.");
                         }
                     });
 

NadekoBot/NadekoBot.cs

@@ -6,8 +6,9 @@ using Parse;
 using Discord.Commands;
 using NadekoBot.Modules;
 using Discord.Modules;
-using Discord.Legacy;
 using Discord.Audio;
+using System.Threading.Tasks;
+using System.Timers;
 
 namespace NadekoBot
 {
@@ -63,6 +64,8 @@ namespace NadekoBot
                 Console.WriteLine("Parse key and/or ID not found. Bot will not log.");
             }
 
+            //reply to personal messages
+            client.MessageReceived += Client_MessageReceived;
 
             //add command service
             var commands = client.Services.Add<CommandService>(commandService);
@@ -93,5 +96,20 @@ namespace NadekoBot
             Console.WriteLine("Exiting...");
             Console.ReadKey();
         }
+        static bool repliedRecently = false;
+        private static async void Client_MessageReceived(object sender, MessageEventArgs e) {
+            if (e.Server != null) return;
+            if (repliedRecently = !repliedRecently) {
+                await e.Send("You can type `-h` or `-help` or `@MyName help` in any of the channels I am in and I will send you a message with my commands.\n Or you can find out what i do here: https://github.com/Kwoth/NadekoBot\nIf you don't want me on your server, you can simply ban me ;(");
+                Timer t = new Timer();
+                t.Interval = 2000;
+                t.Start();
+                t.Elapsed += (s, ev) => {
+                    repliedRecently = !repliedRecently;
+                    t.Stop();
+                    t.Dispose();
+                };
+            }
+        }
     }
 }