media playback listener

app/src/main/java/com/jens/automation2/receivers/MediaPlayerListener.java

@@ -1,11 +1,103 @@
 package com.jens.automation2.receivers;
 
+import android.content.Context;
+import android.media.AudioManager;
 import android.media.MediaPlayer;
 
-public class MediaPlayerListener
+import com.jens.automation2.AutomationService;
+import com.jens.automation2.Miscellaneous;
+import com.jens.automation2.Rule;
+import com.jens.automation2.Settings;
+import com.jens.automation2.Trigger;
+
+import java.util.ArrayList;
+import java.util.Set;
+import java.util.Timer;
+import java.util.TimerTask;
+
+public class MediaPlayerListener implements AutomationListenerInterface
 {
-    void test()
+    static MediaPlayerListener instance = null;
+    static AudioManager mAudioManager = null;
+    static boolean listenerActive = false;
+    Timer timer = null;
+    TimerTask task = null;
+
+    public static boolean isAudioPlaying(Context context)
     {
-        MediaPlayer.OnInfoListener
+        if(mAudioManager == null)
+            mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
+
+        return mAudioManager.isMusicActive();
     }
-}
+
+    public static MediaPlayerListener getInstance()
+    {
+        if(instance == null)
+            instance = new MediaPlayerListener();
+
+        return instance;
+    }
+
+    @Override
+    public void startListener(AutomationService automationService)
+    {
+        Miscellaneous.logEvent("i", "MediaPlayerListener", "Starting listener.",5);
+
+        if(!listenerActive)
+        {
+            if(timer == null)
+            {
+                timer = new Timer();
+            }
+            else
+            {
+                timer.cancel();
+                timer.purge();
+            }
+
+            task = new TimerTask()
+            {
+                @Override
+                public void run()
+                {
+                    ArrayList<Rule> ruleCandidates = Rule.findRuleCandidates(Trigger.Trigger_Enum.musicPlaying);
+                    for(int i=0; i<ruleCandidates.size(); i++)
+                    {
+                        if(ruleCandidates.get(i).getsGreenLight(AutomationService.getInstance()))
+                            ruleCandidates.get(i).activate(AutomationService.getInstance(), false);
+                    }
+                }
+            };
+
+            timer.scheduleAtFixedRate(task, 0, Settings.musicCheckFrequency * 1000);
+        }
+    }
+
+    @Override
+    public void stopListener(AutomationService automationService)
+    {
+        Miscellaneous.logEvent("i", "MediaPlayerListener", "Stopping listener.",5);
+
+        if(listenerActive)
+        {
+            if (timer != null)
+            {
+                timer.cancel();
+                timer.purge();
+            }
+        }
+    }
+
+    @Override
+    public boolean isListenerRunning()
+    {
+        return listenerActive;
+    }
+
+    @Override
+    public Trigger.Trigger_Enum[] getMonitoredTrigger()
+    {
+        return new Trigger.Trigger_Enum[] { Trigger.Trigger_Enum.musicPlaying };
+    }
+}