Initial commit with base

src/main/java/codes/ztereohype/ztereomusic/audio/TrackScheduer.java

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+package codes.ztereohype.ztereomusic.audio;
+
+import com.sedmelluq.discord.lavaplayer.player.AudioPlayer;
+import com.sedmelluq.discord.lavaplayer.player.event.AudioEvent;
+import com.sedmelluq.discord.lavaplayer.player.event.AudioEventAdapter;
+import com.sedmelluq.discord.lavaplayer.player.event.AudioEventListener;
+import com.sedmelluq.discord.lavaplayer.tools.FriendlyException;
+import com.sedmelluq.discord.lavaplayer.track.AudioTrack;
+import com.sedmelluq.discord.lavaplayer.track.AudioTrackEndReason;
+import net.dv8tion.jda.api.entities.Invite;
+import net.dv8tion.jda.api.entities.MessageChannel;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class TrackScheduer extends AudioEventAdapter {
+
+    private final AudioPlayer player;
+    private final List<AudioTrack> trackQueue = new ArrayList<AudioTrack>();
+    private AudioTrack currentTrack;
+    private final MessageChannel infoChannel;
+
+    public TrackScheduer(AudioPlayer player, MessageChannel infoChannel) {
+        this.player = player;
+        this.infoChannel = infoChannel;
+    }
+
+    public void queue(AudioTrack track) {
+        // change this to add to queue and call onTrackEnd!
+        if (this.currentTrack == null) {
+            System.out.println("Playing song directly as there is no song playing rn");
+            this.currentTrack = track;
+            player.playTrack(track);
+        } else {
+            trackQueue.add(track);
+            System.out.println("Added song to queue");
+        }
+    }
+
+    public AudioPlayer getPlayer() {
+        return this.player;
+    }
+
+    @Override
+    public void onPlayerPause(AudioPlayer player) {
+        infoChannel.sendMessage("Pausing...").queue();
+    }
+
+    @Override
+    public void onPlayerResume(AudioPlayer player) {
+        infoChannel.sendMessage("Resuming...").queue();
+    }
+
+    @Override
+    public void onTrackStart(AudioPlayer player, AudioTrack track) {
+        infoChannel.sendMessage("Starting track: " + track.getInfo().title).queue();
+    }
+
+    @Override
+    public void onTrackEnd(AudioPlayer player, AudioTrack track, AudioTrackEndReason endReason) {
+        currentTrack = null;
+
+        if (endReason.mayStartNext) {
+            if (trackQueue.isEmpty()) {
+                System.out.println("track finishd, no more tracks in queue!");
+                infoChannel.sendMessage("no more tracks in queue!").queue();
+            } else {
+                System.out.println("track finishd, trying next track");
+                AudioTrack nextTrack = trackQueue.get(0);
+                trackQueue.remove(0);
+                currentTrack = nextTrack;
+                infoChannel.sendMessage("Playing next track: " + nextTrack.getInfo().title).queue();
+                player.playTrack(currentTrack);
+            }
+        } else {
+            System.out.println("track finishd, cant start next, bye");
+            infoChannel.sendMessage("oopsie woopsie byebye").queue();
+        }
+
+        // endReason == FINISHED: A track finished or died by an exception (mayStartNext = true).
+        // endReason == LOAD_FAILED: Loading of a track failed (mayStartNext = true).
+        // endReason == STOPPED: The player was stopped.
+        // endReason == REPLACED: Another track started playing while this had not finished
+        // endReason == CLEANUP: Player hasn't been queried for a while, if you want you can put a
+        //                       clone of this back to your queue
+    }
+
+    @Override
+    public void onTrackException(AudioPlayer player, AudioTrack track, FriendlyException exception) {
+        // An already playing track threw an exception (track end event will still be received separately)
+    }
+
+    @Override
+    public void onTrackStuck(AudioPlayer player, AudioTrack track, long thresholdMs) {
+        // Audio track has been unable to provide us any audio, might want to just start a new track
+    }
+}