package com.camera.simplemjpeg;

import android.media.MediaPlayer;
import android.os.Bundle;
import android.os.Handler;
import android.widget.SeekBar;
import android.widget.TextView;

import java.util.concurrent.TimeUnit;


import android.app.Activity;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.widget.SeekBar;
import android.widget.TextView;

public class mediaplayer extends Activity {
	
	
	
	private MediaPlayer mediaPlayer;
	public TextView songName, duration;
	private double timeElapsed = 0, finalTime = 0;
	private int forwardTime = 2000, backwardTime = 2000;
	private Handler durationHandler = new Handler();
	private SeekBar seekbar;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);

		//set the layout of the Activity
		setContentView(R.layout.mediaplayer);

		//initialize views
		initializeViews();
	}

	
	public void initializeViews(){
		songName = (TextView) findViewById(R.id.songName);
		
	
		mediaPlayer = MediaPlayer.create(this, R.raw.sample_song);
		finalTime = mediaPlayer.getDuration();
		duration = (TextView) findViewById(R.id.songDuration);
		seekbar = (SeekBar) findViewById(R.id.seekBar);
		songName.setText("Sample_Song.mp3");
		
		seekbar.setMax((int) finalTime);
		seekbar.setClickable(false);
		
	}
	
	// play mp3 song
		public void play(View view) {
			mediaPlayer.start();
			timeElapsed = mediaPlayer.getCurrentPosition();
			seekbar.setProgress((int) timeElapsed);
			durationHandler.postDelayed(updateSeekBarTime, 100);
		}

		//handler to change seekBarTime
		private Runnable updateSeekBarTime = new Runnable() {
			public void run() {
				//get current position
				timeElapsed = mediaPlayer.getCurrentPosition();
				//set seekbar progress
				seekbar.setProgress((int) timeElapsed);
				//set time remaing
				double timeRemaining = finalTime - timeElapsed;
				duration.setText(String.format("%d min, %d sec", TimeUnit.MILLISECONDS.toMinutes((long) timeRemaining), TimeUnit.MILLISECONDS.toSeconds((long) timeRemaining) - TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes((long) timeRemaining))));
				
				//repeat yourself that again in 100 miliseconds
				durationHandler.postDelayed(this, 100);
			}
		};

		// pause mp3 song
		public void pause(View view) {
			mediaPlayer.pause();
		}

		// go forward at forwardTime seconds
		public void forward(View view) {
			//check if we can go forward at forwardTime seconds before song endes
			if ((timeElapsed + forwardTime) <= finalTime) {
				timeElapsed = timeElapsed + forwardTime;

				//seek to the exact second of the track
				mediaPlayer.seekTo((int) timeElapsed);
			}
		}

		// go backwards at backwardTime seconds
		public void rewind(View view) {
			//check if we can go back at backwardTime seconds after song starts
			if ((timeElapsed - backwardTime) > 0) {
				timeElapsed = timeElapsed - backwardTime;
				
				//seek to the exact second of the track
				mediaPlayer.seekTo((int) timeElapsed);
			}
		}

	
	
		
}

