Automatically show "now playing" when a new track starts

src/main/java/com/jagrosh/jmusicbot/BotConfig.java

@@ -42,7 +42,7 @@ public class BotConfig
     private Path path = null;
     private String token, prefix, altprefix, helpWord, playlistsFolder,
             successEmoji, warningEmoji, errorEmoji, loadingEmoji, searchingEmoji;
-    private boolean stayInChannel, songInGame, npImages, updatealerts, useEval, dbots;
+    private boolean stayInChannel, songInGame, npImages, updatealerts, useEval, dbots, autoNowPlaying;
     private long owner, maxSeconds, aloneTimeUntilStop;
     private OnlineStatus status;
     private Activity game;
@@ -90,6 +90,7 @@ public void load()
             status = OtherUtil.parseStatus(config.getString("status"));
             stayInChannel = config.getBoolean("stayinchannel");
             songInGame = config.getBoolean("songinstatus");
+            autoNowPlaying = config.getBoolean("autonowplaying");
             npImages = config.getBoolean("npimages");
             updatealerts = config.getBoolean("updatealerts");
             useEval = config.getBoolean("eval");
@@ -266,6 +267,11 @@ public boolean getSongInStatus()
         return songInGame;
     }
 
+    public boolean getAutoNowPlaying()
+    {
+        return autoNowPlaying;
+    }
+
     public String getPlaylistsFolder()
     {
         return playlistsFolder;

src/main/java/com/jagrosh/jmusicbot/audio/AudioHandler.java

@@ -195,7 +195,7 @@ public void onTrackStart(AudioPlayer player, AudioTrack track)
 
 
     // Formatting
-    public Message getNowPlaying(JDA jda)
+    public Message getNowPlaying(JDA jda, boolean includeProgress)
     {
         if(isMusicPlaying(jda))
         {
@@ -232,17 +232,28 @@ public Message getNowPlaying(JDA jda)
             if(track.getInfo().author != null && !track.getInfo().author.isEmpty())
                 eb.setFooter("Source: " + track.getInfo().author, null);
 
-            double progress = (double)audioPlayer.getPlayingTrack().getPosition()/track.getDuration();
-            eb.setDescription((audioPlayer.isPaused() ? JMusicBot.PAUSE_EMOJI : JMusicBot.PLAY_EMOJI)
-                    + " "+FormatUtil.progressBar(progress)
-                    + " `[" + FormatUtil.formatTime(track.getPosition()) + "/" + FormatUtil.formatTime(track.getDuration()) + "]` "
-                    + FormatUtil.volumeIcon(audioPlayer.getVolume()));
+            if(includeProgress)
+            {
+                double progress = (double)audioPlayer.getPlayingTrack().getPosition()/track.getDuration();
+                eb.setDescription((audioPlayer.isPaused() ? JMusicBot.PAUSE_EMOJI : JMusicBot.PLAY_EMOJI)
+                        + " "+FormatUtil.progressBar(progress)
+                        + " `[" + FormatUtil.formatTime(track.getPosition()) + "/" + FormatUtil.formatTime(track.getDuration()) + "]` "
+                        + FormatUtil.volumeIcon(audioPlayer.getVolume()));
+            }
+            else
+                eb.setDescription(" `[" + FormatUtil.formatTime(track.getDuration()) + "]` "
+                        + FormatUtil.volumeIcon(audioPlayer.getVolume()));
 
             return mb.setEmbed(eb.build()).build();
         }
         else return null;
     }
 
+    public Message getNowPlaying(JDA jda)
+    {
+        return getNowPlaying(jda, true);
+    }
+
     public Message getNoMusicPlaying(JDA jda)
     {
         Guild guild = guild(jda);

src/main/java/com/jagrosh/jmusicbot/audio/NowplayingHandler.java

@@ -132,6 +132,28 @@ else if(topic.contains("\u200B"))
         }
     }
 
+    public void sendNowPlayingMessageForNewTrack(long guildId)
+    {
+        Guild guild = bot.getJDA().getGuildById(guildId);
+        if(guild==null)
+            return;
+
+        Settings settings = bot.getSettingsManager().getSettings(guildId);
+        TextChannel tchan = settings.getTextChannel(guild);
+        if (tchan == null)
+            return;
+
+        AudioHandler handler = (AudioHandler)guild.getAudioManager().getSendingHandler();
+        // Because useNPImages prevents now playing messages from automatically updating,
+        // there's no point in including the track progress because it will always be
+        // right at the beginning. Instead show a message just containing the track length:
+        Message msg = handler.getNowPlaying(bot.getJDA(), !bot.getConfig().useNPImages());
+        if(msg==null)
+            return;
+
+        tchan.sendMessage(msg).queue((m) -> setLastNPMessage(m));
+    }
+
     // "event"-based methods
     public void onTrackUpdate(long guildId, AudioTrack track, AudioHandler handler)
     {
@@ -146,6 +168,9 @@ public void onTrackUpdate(long guildId, AudioTrack track, AudioHandler handler)
 
         // update channel topic if applicable
         updateTopic(guildId, handler, false);
+
+        if(bot.getConfig().getAutoNowPlaying())
+            sendNowPlayingMessageForNewTrack(guildId);
     }
 
     public void onMessageDelete(Guild guild, long messageId)

src/main/resources/reference.conf

@@ -92,6 +92,13 @@ npimages = false
 stayinchannel = false
 
 
+// If you set this, the bot will automatically send a message displaying the current
+// track and which user queued it when a track starts playing for guilds that have
+// set a text channel for music commands.
+
+autonowplaying = false
+
+
 // This sets the maximum amount of seconds any track loaded can be. If not set or set
 // to any number less than or equal to zero, there is no maximum time length. This time
 // restriction applies to songs loaded from any source.