package com.miniabs;

import java.io.File;
import java.io.FileInputStream;

import android.content.Context;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.os.PowerManager;

/** Android's own MediaPlayer: every Android version. No speed control (Android 2.x can't). */
final class MediaPlayerEngine implements Engine, MediaPlayer.OnPreparedListener, MediaPlayer.OnCompletionListener,
        MediaPlayer.OnErrorListener, MediaPlayer.OnBufferingUpdateListener {

    private final MediaPlayer mp = new MediaPlayer();
    private Listener listener;
    private int buffered;

    MediaPlayerEngine(Context c) {
        mp.setAudioStreamType(AudioManager.STREAM_MUSIC);
        mp.setWakeMode(c.getApplicationContext(), PowerManager.PARTIAL_WAKE_LOCK);
        mp.setOnPreparedListener(this);
        mp.setOnCompletionListener(this);
        mp.setOnErrorListener(this);
        mp.setOnBufferingUpdateListener(this);
    }

    public void setListener(Listener l) { listener = l; }

    public void setSource(File file, String url) throws Exception {
        if (file != null) {
            FileInputStream in = new FileInputStream(file);
            try { mp.setDataSource(in.getFD()); } finally { in.close(); }
        } else {
            mp.setDataSource(url);
        }
    }

    public void prepare() { mp.prepareAsync(); }

    public void start() { mp.start(); }

    public void pause() { mp.pause(); }

    public void seekTo(int ms) { mp.seekTo(ms); }

    public int position() { return mp.getCurrentPosition(); }

    public int duration() { return Math.max(0, mp.getDuration()); }

    public int bufferedPercent() { return buffered; }

    public void setVolume(float v) { mp.setVolume(v, v); }

    public void setSpeed(float speed, boolean skipSilence) {}

    public void release() {
        listener = null;
        try { mp.reset(); } catch (Exception ignored) {}
        try { mp.release(); } catch (Exception ignored) {}
    }

    public void onPrepared(MediaPlayer p) { if (listener != null) listener.onPrepared(this); }

    public void onCompletion(MediaPlayer p) { if (listener != null) listener.onCompletion(this); }

    public boolean onError(MediaPlayer p, int what, int extra) {
        if (listener != null) listener.onError(this, "Erro de reprodución (" + what + "/" + extra + ").", false);
        return true;
    }

    public void onBufferingUpdate(MediaPlayer p, int percent) { buffered = percent; }
}