Main: Log various events to stdout.

src/main/java/moe/nekojimi/chords/Main.java

@@ -7,6 +7,8 @@ package moe.nekojimi.chords;
 
 import java.io.File;
 import java.net.URL;
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
 import java.util.*;
 import javax.security.auth.login.LoginException;
 import moe.nekojimi.chords.commands.*;
@@ -16,6 +18,7 @@ import moe.nekojimi.musicsearcher.providers.Searcher;
 import net.dv8tion.jda.api.JDA;
 import net.dv8tion.jda.api.JDABuilder;
 import net.dv8tion.jda.api.entities.*;
+import net.dv8tion.jda.api.events.guild.voice.GuildVoiceLeaveEvent;
 import net.dv8tion.jda.api.events.message.guild.GuildMessageReceivedEvent;
 import net.dv8tion.jda.api.hooks.ListenerAdapter;
 import net.dv8tion.jda.api.managers.AudioManager;
@@ -77,6 +80,7 @@ public class Main extends ListenerAdapter
 
     public Main()
     {
+        log("INFO", "Starting up...");
         downloader = new Downloader();
         downloader.setMessageHandler((Song song, Exception ex) ->
         {
@@ -85,8 +89,10 @@ public class Main extends ListenerAdapter
             if (channel != null)
                 if (ex == null)
                     if (song.getLocation() != null)
+                    {
                         channel.sendMessage(/*bracketNo + */"Finished downloading " + song + " for " + song.getRequestedBy() + ", added to queue!").queue();
-                    else
+                        log("DOWN", "Downloaded " + song);
+                    }                    else
                     {
                         Format format = song.getBestFormat();
                         String formatDetails = "";
@@ -95,9 +101,13 @@ public class Main extends ListenerAdapter
                             formatDetails = " (" + format.getBitrate() / 1000 + "k, " + String.format("%.2f", format.getSize() / (1024.0 * 1024.0)) + "MiB)";
                         }
                         channel.sendMessage(/*bracketNo + */"Now downloading " + song + formatDetails + " for " + song.getRequestedBy() + " ...").queue();
+                        log("DOWN", "Downloading " + song + "...");
                     }
                 else
+                {
                     channel.sendMessage(/*bracketNo + */"Failed to download " + song + " for " + song.getRequestedBy() + "! Reason: " + ex.getMessage()).queue();
+                    log("DOWN", "Failed to download " + song + "! Reason: " + ex.getMessage());
+                }
 
         });
         searcher = MetaSearcher.loadYAML(new File("searchproviders.yml"));
@@ -111,6 +121,8 @@ public class Main extends ListenerAdapter
         addCommand(new SkipCommand(this));
         helpCommand = new HelpCommand(this);
         addCommand(helpCommand);
+
+        log("INFO", "Started OK!");
     }
 
     private void addCommand(Command command)
@@ -123,6 +135,19 @@ public class Main extends ListenerAdapter
         this.jda = jda;
     }
 
+    @Override
+    public void onGuildVoiceLeave(GuildVoiceLeaveEvent event)
+    {
+        if (this.currentVoiceChannel == null)
+            return;
+
+        final VoiceChannel channelLeft = event.getChannelLeft();
+
+        if (channelLeft.getMembers().isEmpty())
+            if (channelLeft == currentVoiceChannel)
+                disconnect();
+    }
+
     @Override
     public void onGuildMessageReceived(GuildMessageReceivedEvent event)
     {
@@ -139,6 +164,8 @@ public class Main extends ListenerAdapter
         if (author.isBot())
             return;
 
+        log("MESG", "G:" + guild.getName() + " A:" + author.getName() + " C:" + content);
+
         try
         {
             String[] split = content.split("\\s+", 2);
@@ -162,6 +189,7 @@ public class Main extends ListenerAdapter
         } catch (Exception ex)
         {
             event.getChannel().sendMessage("Error in command! " + ex.getMessage()).queue();
+            log("UERR", "Command error:" + ex.getMessage());
         }
     }
 
@@ -223,6 +251,11 @@ public class Main extends ListenerAdapter
         }
     }
 
+    public void log(String type, String message)
+    {
+        System.out.println(type + " " + LocalDateTime.now().format(DateTimeFormatter.ISO_DATE_TIME) + "\t" + message);
+    }
+
     public MusicHandler getMusicHandler()
     {
         return musicHandler;