Add feature to shuffle all requests regardless of requester

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

@@ -124,6 +124,7 @@ private static void startBot()
                         new PauseCmd(bot),
                         new PlaynextCmd(bot),
                         new RepeatCmd(bot),
+                        new ShuffleAllCmd(bot),
                         new SkiptoCmd(bot),
                         new StopCmd(bot),
                         new VolumeCmd(bot),

src/main/java/com/jagrosh/jmusicbot/commands/dj/ShuffleAllCmd.java

@@ -0,0 +1,56 @@
+/*
+ * Copyright 2019 John Grosh <[email protected]>.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.jagrosh.jmusicbot.commands.dj;
+
+import com.jagrosh.jdautilities.command.CommandEvent;
+import com.jagrosh.jmusicbot.Bot;
+import com.jagrosh.jmusicbot.audio.AudioHandler;
+import com.jagrosh.jmusicbot.commands.DJCommand;
+
+/**
+ *
+ * @author Joshua L.
+ */
+public class ShuffleAllCmd extends DJCommand
+{
+    public ShuffleAllCmd(Bot bot)
+    {
+        super(bot);
+        this.name = "shuffleall";
+        this.help = "shuffles all songs in the queue";
+        this.aliases = bot.getConfig().getAliases(this.name);
+        this.bePlaying = true;
+    }
+
+    @Override
+    public void doCommand(CommandEvent event) 
+    {
+        AudioHandler handler = (AudioHandler)event.getGuild().getAudioManager().getSendingHandler();
+        int s = handler.getQueue().shuffle(0, true);
+        switch (s) 
+        {
+            case 0:
+                event.replyError("There isn't any music in the queue to shuffle!");
+                break;
+            case 1:
+                event.replyWarning("There is only one song in the queue!");
+                break;
+            default:
+                event.replySuccess("You successfully shuffled "+s+" entries.");
+                break;
+        }
+    }
+}

src/main/java/com/jagrosh/jmusicbot/commands/music/ShuffleCmd.java

@@ -40,7 +40,7 @@ public ShuffleCmd(Bot bot)
     public void doCommand(CommandEvent event) 
     {
         AudioHandler handler = (AudioHandler)event.getGuild().getAudioManager().getSendingHandler();
-        int s = handler.getQueue().shuffle(event.getAuthor().getIdLong());
+        int s = handler.getQueue().shuffle(event.getAuthor().getIdLong(), false);
         switch (s) 
         {
             case 0:

src/main/java/com/jagrosh/jmusicbot/queue/FairQueue.java

@@ -104,15 +104,26 @@ public void clear()
         list.clear();
     }
 
-    public int shuffle(long identifier)
+    public int shuffle(long identifier, Boolean shuffleall)
     {
         List<Integer> iset = new ArrayList<>();
-        for(int i=0; i<list.size(); i++)
+        if (shuffleall)
         {
-            if(list.get(i).getIdentifier()==identifier)
-                iset.add(i);
+            for (int i=0; i<list.size(); i++)
+            {
+                iset.add(i); 
+            }
+        }
+        else
+        {
+            for (int i=0; i<list.size(); i++)
+            {
+                if (list.get(i).getIdentifier()==identifier)
+                    iset.add(i);
+            }
         }
-        for(int j=0; j<iset.size(); j++)
+
+        for (int j=0; j<iset.size(); j++)
         {
             int first = iset.get(j);
             int second = iset.get((int)(Math.random()*iset.size()));