Lots of minor bug fixes, added queue clear.

README.md

@@ -36,7 +36,11 @@ Because the play command is defined as `play [URL]`, and the queue command is de
 
 * `skip` - If a song is playing, the bot will skip it and play the next song in the queue.
 
-* `queue [all]` - Lists up to the first 10 items on the queue, if no argument is given. If you add `all`, the bot will upload a list to [PasteBin](http://pastebin.com) of the entire queue, provided it is greater than 10 elements, and give you a link which expires in 10 minutes.
+* `queue [all|clear]` - Lists up to the first 10 items on the queue, if no argument is given. 
+
+    * If you add `all`, the bot will upload a list to [PasteBin](http://pastebin.com) of the entire queue, provided it is greater than 10 elements, and give you a link which expires in 10 minutes. 
+    
+    * If `clear` is used, the queue will be cleared and the current song will be stopped.
 
 * `repeat [true|false]` - Sets the bot to repeat the playlist, as in once a song is removed from the queue to be played, it is added back to the end of the playlist.
 

src/main/java/handiebot/command/CommandHandler.java

@@ -1,9 +1,5 @@
 package handiebot.command;
 
-import handiebot.command.commands.HelpCommand;
-import handiebot.command.commands.InfoCommand;
-import handiebot.command.commands.SetPrefixCommand;
-import handiebot.command.commands.music.*;
 import handiebot.utils.DisappearingMessage;
 import handiebot.utils.FileUtil;
 import handiebot.view.BotLog;
@@ -53,38 +49,7 @@ public class CommandHandler {
         CommandContext context = new CommandContext(user, channel, guild, args);
         if (guild != null && command != null){
             DisappearingMessage.deleteMessageAfter(1000, message);
-            switch (command){
+            Commands.executeCommand(command, context);
-                //Music commands.
-                case ("play"):
-                    new PlayCommand().execute(context);
-                    break;
-                case ("skip"):
-                    new SkipCommand().execute(context);
-                    break;
-                case ("queue"):
-                    new QueueCommand().execute(context);
-                    break;
-                case ("repeat"):
-                    new RepeatCommand().execute(context);
-                    break;
-                case ("shuffle"):
-                    new ShuffleCommand().execute(context);
-                    break;
-                case ("playlist"):
-                    new PlaylistCommand().execute(context);
-                    break;
-                //Other commands.
-                case ("help"):
-                    new HelpCommand().execute(context);
-                    break;
-                case ("info"):
-                    new InfoCommand().execute(context);
-                    break;
-                case ("setprefix"):
-                    new SetPrefixCommand().execute(context);
-                default:
-                    log.log(BotLog.TYPE.ERROR, guild, "Invalid command: "+command+" issued by "+user.getName());
-            }
         }
     }
 

src/main/java/handiebot/command/Commands.java

@@ -1,11 +1,18 @@
 package handiebot.command;
 
+import handiebot.command.commands.HelpCommand;
+import handiebot.command.commands.InfoCommand;
+import handiebot.command.commands.SetPrefixCommand;
 import handiebot.command.commands.music.*;
 import handiebot.command.types.Command;
+import handiebot.command.types.ContextCommand;
+import handiebot.view.BotLog;
 
 import java.util.ArrayList;
 import java.util.List;
 
+import static handiebot.HandieBot.log;
+
 /**
  * @author Andrew Lalis
  * Class to hold a list of commands, as static definitions that can be called upon by {@code CommandHandler}.
@@ -22,6 +29,26 @@ public class Commands {
         commands.add(new RepeatCommand());
         commands.add(new ShuffleCommand());
         commands.add(new PlaylistCommand());
+        //Other commands.
+        commands.add(new HelpCommand());
+        commands.add(new InfoCommand());
+        commands.add(new SetPrefixCommand());
+    }
+
+    /**
+     * Attempts to execute a command from a given command string.
+     * @param command The string representation of a main command, without prefix.
+     */
+    public static void executeCommand(String command, CommandContext context){
+        for (Command cmd : commands) {
+            if (cmd.getName().equals(command)){
+                if (cmd instanceof ContextCommand){
+                    ((ContextCommand)cmd).execute(context);
+                    return;
+                }
+            }
+        }
+        log.log(BotLog.TYPE.ERROR, context.getGuild(), "Invalid command: "+command+" issued by "+context.getUser().getName());
     }
 
 }

src/main/java/handiebot/command/commands/HelpCommand.java

@@ -12,7 +12,7 @@ import java.awt.*;
  * Class for sending help/command info to a user if they so desire it.
  */
 public class HelpCommand extends ContextCommand {
-
+//TODO: Finish the help class.
     public HelpCommand() {
         super("help");
     }

src/main/java/handiebot/command/commands/music/PlaylistCommand.java

@@ -126,7 +126,7 @@ public class PlaylistCommand extends ContextCommand {
                 Playlist playlist = new Playlist(context.getArgs()[1]);
                 playlist.load();
                 IMessage message = context.getChannel().sendMessage(playlist.toString());
-                DisappearingMessage.deleteMessageAfter(6000, message);
+                DisappearingMessage.deleteMessageAfter(12000, message);
             } else {
                 new DisappearingMessage(context.getChannel(), "The playlist you specified does not exist.\nUse `"+CommandHandler.PREFIXES.get(context.getGuild())+"playlist show` to view available playlists.", 5000);
             }
@@ -137,7 +137,7 @@ public class PlaylistCommand extends ContextCommand {
                 sb.append(playlist).append('\n');
             }
             IMessage message = context.getChannel().sendMessage(sb.toString());
-            DisappearingMessage.deleteMessageAfter(6000, message);
+            DisappearingMessage.deleteMessageAfter(12000, message);
         }
     }
 
@@ -228,9 +228,10 @@ public class PlaylistCommand extends ContextCommand {
             Playlist playlist = new Playlist(context.getArgs()[1]);
             playlist.load();
             try{
-                int index = Integer.parseInt(context.getArgs()[2]);
+                int index = Integer.parseInt(context.getArgs()[2]) - 1;
                 UnloadedTrack track = playlist.getTracks().get(index);
                 playlist.removeTrack(track);
+                playlist.save();
                 new DisappearingMessage(context.getChannel(), "Removed song: *"+track.getTitle()+"* from playlist **"+playlist.getName()+"**.", 6000);
                 log.log(BotLog.TYPE.MUSIC, "Removed song: "+track.getTitle()+" from playlist ["+playlist.getName()+"].");
                 DisappearingMessage.deleteMessageAfter(6000, context.getChannel().sendMessage(playlist.toString()));
@@ -266,17 +267,15 @@ public class PlaylistCommand extends ContextCommand {
                 new DisappearingMessage(context.getChannel(), "You must enter two integer values for the song indices.", 5000);
             }
             UnloadedTrack track;
-            if (oldIndex > -1 && oldIndex < playlist.getTrackCount()){
+            if ((oldIndex > -1 && oldIndex < playlist.getTrackCount()) &&
+                    (newIndex > -1 && newIndex <= playlist.getTrackCount())){
                 track = playlist.getTracks().remove(oldIndex);
-                if (newIndex > -1 && newIndex <= playlist.getTrackCount()){
                 playlist.getTracks().add(newIndex, track);
+                playlist.save();
                 new DisappearingMessage(context.getChannel(), "Moved song *"+track.getTitle()+"* from position "+(oldIndex+1)+" to position "+(newIndex+1), 6000);
                 log.log(BotLog.TYPE.MUSIC, "Moved song "+track.getTitle()+" from position "+(oldIndex+1)+" to position "+(newIndex+1));
             } else {
-                    new DisappearingMessage(context.getChannel(), "The index of the song's new position is invalid. You entered "+newIndex, 5000);
+                new DisappearingMessage(context.getChannel(), "The song indices are invalid. You specified moving song "+oldIndex+" to position "+newIndex+". ", 5000);
-                }
-            } else {
-                new DisappearingMessage(context.getChannel(), "The index of the song is invalid. You entered "+oldIndex, 5000);
             }
         } else {
             new DisappearingMessage(context.getChannel(), "You must provide a playlist name, followed by the song index, and a new index for that song.", 5000);

src/main/java/handiebot/command/commands/music/QueueCommand.java

@@ -3,6 +3,7 @@ package handiebot.command.commands.music;
 import handiebot.HandieBot;
 import handiebot.command.CommandContext;
 import handiebot.command.types.ContextCommand;
+import handiebot.utils.DisappearingMessage;
 
 /**
  * @author Andrew Lalis
@@ -15,7 +16,16 @@ public class QueueCommand extends ContextCommand {
 
     @Override
     public void execute(CommandContext context) {
-        HandieBot.musicPlayer.showQueueList(context.getGuild(), (context.getArgs().length == 1 && context.getArgs()[0].equals("all")));
+        if (context.getArgs().length == 1){
+            if (context.getArgs()[0].equals("all")){
+                HandieBot.musicPlayer.showQueueList(context.getGuild(), true);
+            } else if (context.getArgs()[0].equals("clear")){
+                HandieBot.musicPlayer.getMusicManager(context.getGuild()).scheduler.clearQueue();
+                new DisappearingMessage(context.getChannel(), "Cleared the queue.", 5000);
+            }
+        } else {
+            HandieBot.musicPlayer.showQueueList(context.getGuild(), false);
+        }
     }
 
 }

src/main/java/handiebot/lavaplayer/MusicPlayer.java

@@ -169,7 +169,7 @@ public class MusicPlayer {
                     sb.append(tracks.get(i).getURL()).append(")");
                     sb.append(tracks.get(i).getFormattedDuration()).append('\n');
                 }
-                builder.appendField("Showing " + (tracks.size() <= 10 ? tracks.size() : "the first 10") + " track" + (tracks.size() > 1 ? "s" : "") + ".", sb.toString(), false);
+                builder.appendField("Showing " + (tracks.size() <= 10 ? tracks.size() : "the first 10") + " track" + (tracks.size() > 1 ? "s" : "") + " out of "+tracks.size()+".", sb.toString(), false);
                 IMessage message = getChatChannel(guild).sendMessage(builder.build());
                 DisappearingMessage.deleteMessageAfter(6000, message);
             }

src/main/java/handiebot/lavaplayer/TrackScheduler.java

@@ -50,13 +50,21 @@ public class TrackScheduler extends AudioEventAdapter {
      * @param playlist the playlist to load from.
      */
     public void setPlaylist(Playlist playlist){
-        this.activePlaylist = playlist;
+        this.activePlaylist.copy(playlist);
     }
 
     public Playlist getActivePlaylist(){
         return this.activePlaylist;
     }
 
+    /**
+     * Clears the queue.
+     */
+    public void clearQueue(){
+        this.quit();
+        this.activePlaylist.clear();
+    }
+
     /**
      * Sets whether or not songs get placed back into the queue once they're played.
      * @param value True if the playlist should repeat.

src/main/java/handiebot/lavaplayer/playlist/Playlist.java

@@ -56,6 +56,21 @@ public class Playlist {
         this.tracks.remove(track);
     }
 
+    /**
+     * Copies all the tracks from another playlist onto this one.
+     * @param playlist A playlist.
+     */
+    public void copy(Playlist playlist){
+        this.getTracks().clear();
+        for (UnloadedTrack track : playlist.getTracks()){
+            this.tracks.add(track.clone());
+        }
+    }
+
+    public void clear(){
+        this.tracks.clear();
+    }
+
     /**
      * Loads and returns the audio track that's first on the list.
      * This removes that track from the playlist.
@@ -63,6 +78,9 @@ public class Playlist {
      * @return The AudioTrack corresponding to the next UnloadedTrack in the list.
      */
     public AudioTrack loadNextTrack(boolean shouldShuffle){
+        if (this.getTrackCount() == 0){
+            return null;
+        }
         if (shouldShuffle){
             return this.tracks.remove(getShuffledIndex(this.tracks.size())).loadAudioTrack();
         } else {
@@ -188,9 +206,13 @@ public class Playlist {
 
     @Override
     public String toString(){
-        StringBuilder sb = new StringBuilder("HandieBot Playlist: "+this.getName()+'\n');
+        StringBuilder sb = new StringBuilder("Playlist: "+this.getName()+'\n');
-        for (int i = 0; i < this.getTrackCount(); i++){
+        if (this.getTrackCount() == 0){
-            sb.append(i+1).append(". ").append(this.tracks.get(i).getTitle()).append(" ").append(this.tracks.get(i).getFormattedDuration()).append("\n");
+            sb.append("There are no songs in this playlist.");
+        } else {
+            for (int i = 0; i < this.getTrackCount(); i++) {
+                sb.append(i + 1).append(". ").append(this.tracks.get(i).getTitle()).append(" ").append(this.tracks.get(i).getFormattedDuration()).append("\n");
+            }
         }
         return sb.toString();
     }