Added repeat and queue listing, still lots of work that needs to be done.

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

@@ -14,7 +14,7 @@ import java.awt.*;
  */
 public class CommandHandler {
 
-    private static String PREFIX = "!";
+    public static String PREFIX = "!";
 
     private final HandieBot bot;
 
@@ -40,8 +40,10 @@ public class CommandHandler {
                 this.bot.getMusicPlayer().skipTrack(guild);
             } else if (command.equals("help")){
                 this.sendHelpInfo(user);
-            } else if (command.equals("playnow") && args.length == 1){
+            } else if (command.equals("queue") && args.length == 0){
-
+                this.bot.getMusicPlayer().showQueueList(guild);
+            } else if (command.equals("repeat")){
+                this.bot.getMusicPlayer().toggleRepeat(guild);
             }
         }
     }

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

@@ -7,9 +7,11 @@ import com.sedmelluq.discord.lavaplayer.source.AudioSourceManagers;
 import com.sedmelluq.discord.lavaplayer.tools.FriendlyException;
 import com.sedmelluq.discord.lavaplayer.track.AudioPlaylist;
 import com.sedmelluq.discord.lavaplayer.track.AudioTrack;
+import handiebot.command.CommandHandler;
 import sx.blah.discord.handle.obj.IChannel;
 import sx.blah.discord.handle.obj.IGuild;
 import sx.blah.discord.handle.obj.IVoiceChannel;
+import sx.blah.discord.util.EmbedBuilder;
 
 import java.util.HashMap;
 import java.util.List;
@@ -34,6 +36,49 @@ public class MusicPlayer {
         AudioSourceManagers.registerRemoteSources(playerManager);
     }
 
+    /**
+     * Toggles the playlist's repeating.
+     * @param guild The guild to perform the action on.
+     */
+    public void toggleRepeat(IGuild guild){
+        GuildMusicManager musicManager = this.getGuildMusicManager(guild);
+        musicManager.scheduler.setRepeat(!musicManager.scheduler.isRepeating());
+        this.getMessageChannel(guild).sendMessage("**Repeat** is now *"+(musicManager.scheduler.isRepeating() ? "On" : "Off")+"*.");
+    }
+
+    /**
+     * Sends a formatted message to the guild about the first few items in a queue.
+     * @param guild The guild to show the queue for.
+     */
+    public void showQueueList(IGuild guild){
+        GuildMusicManager musicManager = this.getGuildMusicManager(guild);
+        List<AudioTrack> tracks = musicManager.scheduler.queueList();
+        if (tracks.size() == 0) {
+            this.getMessageChannel(guild).sendMessage("The queue is empty. Use **"+ CommandHandler.PREFIX+"play** *URL* to add songs.");
+        } else {
+            EmbedBuilder builder = new EmbedBuilder();
+            builder.withColor(255, 0, 0);
+            StringBuilder sb = new StringBuilder();
+            for (int i = 0; i < (tracks.size() <= 10 ? tracks.size() : 10); i++) {
+                sb.append(i+1);
+                sb.append(". ");
+                sb.append('[');
+                sb.append(tracks.get(i).getInfo().title);
+                sb.append("](");
+                sb.append(tracks.get(i).getInfo().uri);
+                sb.append(") [");
+                int seconds = (int) (tracks.get(i).getInfo().length/1000);
+                int minutes = seconds / 60;
+                sb.append(minutes);
+                sb.append(":");
+                sb.append(seconds % 60);
+                sb.append("]\n");
+            }
+            builder.appendField("Showing " + (tracks.size() <= 10 ? tracks.size() : "the first 10") + " tracks.", sb.toString(), false);
+            this.getMessageChannel(guild).sendMessage(builder.build());
+        }
+    }
+
     /**
      * Loads a URL to the queue, or outputs an error message if it fails.
      * @param guild The guild to load the URL to.
@@ -81,7 +126,7 @@ public class MusicPlayer {
         if (voiceChannel != null){
             musicManager.scheduler.queue(track);
             IChannel channel = this.getMessageChannel(guild);
-            channel.sendMessage("Added ["+track.getInfo().title+"] to the queue.");
+            channel.sendMessage("Added **"+track.getInfo().title+"** to the queue.");
         }
 
     }
@@ -117,11 +162,11 @@ public class MusicPlayer {
      * @return The voice channel the bot is now connected to.
      */
     private IVoiceChannel connectToMusicChannel(IGuild guild){
-        for (IVoiceChannel voiceChannel : guild.getVoiceChannelsByName(CHANNEL_NAME)){
+        List<IVoiceChannel> voiceChannels = guild.getVoiceChannelsByName(CHANNEL_NAME);
-            if (!voiceChannel.isConnected()) {
+        if (voiceChannels.size() == 1){
-                voiceChannel.join();
+            if (!voiceChannels.get(0).isConnected())
-                return voiceChannel;
+                voiceChannels.get(0).join();
-            }
+            return voiceChannels.get(0);
         }
         IVoiceChannel voiceChannel = guild.createVoiceChannel(CHANNEL_NAME);
         voiceChannel.join();

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

@@ -6,6 +6,8 @@ import com.sedmelluq.discord.lavaplayer.tools.FriendlyException;
 import com.sedmelluq.discord.lavaplayer.track.AudioTrack;
 import com.sedmelluq.discord.lavaplayer.track.AudioTrackEndReason;
 
+import java.util.ArrayList;
+import java.util.List;
 import java.util.concurrent.BlockingQueue;
 import java.util.concurrent.LinkedBlockingQueue;
 
@@ -16,6 +18,8 @@ public class TrackScheduler extends AudioEventAdapter {
 
     private final AudioPlayer player;
     private final BlockingQueue<AudioTrack> queue;
+    private boolean repeat = false;
+    private AudioTrack currentTrack = null;
 
     /**
      * Constructs a new track scheduler with the given player.
@@ -26,6 +30,22 @@ public class TrackScheduler extends AudioEventAdapter {
         this.queue = new LinkedBlockingQueue<>();
     }
 
+    /**
+     * Sets whether or not songs get placed back into the queue once they're played.
+     * @param value True if the playlist should repeat.
+     */
+    public void setRepeat(boolean value){
+        this.repeat = value;
+    }
+
+    /**
+     * Returns whether or not repeating is enabled.
+     * @return True if repeating, false otherwise.
+     */
+    public boolean isRepeating(){
+        return this.repeat;
+    }
+
     /**
      * Add the next track to the queue or play right away if nothing is in the queue.
      * @param track The track to play or add to the queue.
@@ -41,7 +61,12 @@ public class TrackScheduler extends AudioEventAdapter {
      * Starts the next track, stopping the current one if it's playing.
      */
     public void nextTrack(){
-        player.startTrack(queue.poll(), false);
+        AudioTrack track = queue.poll();
+        player.startTrack(track, false);
+        this.currentTrack = track;
+        if (this.repeat){
+            this.queue.add(track);
+        }
     }
 
     @Override
@@ -49,10 +74,19 @@ public class TrackScheduler extends AudioEventAdapter {
         if (endReason.mayStartNext){
             nextTrack();
         } else {
+            this.currentTrack = null;
             System.out.println(endReason.toString());
         }
     }
 
+    /**
+     * Returns a list of tracks in the queue.
+     * @return A list of tracks in the queue.
+     */
+    public List<AudioTrack> queueList(){
+        return new ArrayList<>(this.queue);
+    }
+
     @Override
     public void onTrackException(AudioPlayer player, AudioTrack track, FriendlyException exception){
         exception.printStackTrace();