/*
 * Copyright (C) 2010 ZXing authors
 *
 * 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 io.comi.rn.barcode.scanner;

import android.app.Activity;
import android.content.Context;
import android.content.res.AssetFileDescriptor;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.os.Vibrator;
import android.support.annotation.RawRes;
import android.util.Log;
import java.io.Closeable;
import java.io.IOException;

/**
 * Manages beeps and vibrations for {@link AbsCaptureActivity}.
 */
public final class BeepManager implements MediaPlayer.OnErrorListener, Closeable {

    private static final String TAG = BeepManager.class.getSimpleName();

    private static final float BEEP_VOLUME = 0.10f;
    private static final long VIBRATE_DURATION = 200L;

    private final Activity activity;
    private MediaPlayer mediaPlayer;
    private boolean playBeep = true;
    private boolean vibrate = true;
    @RawRes private int beepSource = -1;

    public BeepManager(Activity activity, @RawRes int beepSource) {
        if (beepSource <= 0) {
            throw new IllegalArgumentException(
                    "你可能忘了实现CaptureActivity的 getBeepSource() 方法返回有效的声音资源id");
        }
        this.activity = activity;
        this.mediaPlayer = null;
        this.beepSource = beepSource;
        updatePrefs();
    }

    public boolean isPlayBeep() {
        return playBeep;
    }

    public void setPlayBeep(boolean playBeep) {
        this.playBeep = playBeep;
        updatePrefs();
    }

    public boolean isVibrate() {
        return vibrate;
    }

    public void setVibrate(boolean vibrate) {
        this.vibrate = vibrate;
    }

    synchronized void updatePrefs() {
        playBeep = shouldBeep(playBeep, activity);
        if (playBeep && mediaPlayer == null) {
            // The volume on STREAM_SYSTEM is not adjustable, and users found it too loud,
            // so we now play on the music stream.
            activity.setVolumeControlStream(AudioManager.STREAM_MUSIC);
            mediaPlayer = buildMediaPlayer(activity);
        }
    }

    synchronized void playBeepSoundAndVibrate() {
        if (playBeep && mediaPlayer != null) {
            mediaPlayer.start();
        }
        if (vibrate) {
            Vibrator vibrator = (Vibrator) activity.getSystemService(Context.VIBRATOR_SERVICE);
            vibrator.vibrate(VIBRATE_DURATION);
        }
    }

    private static boolean shouldBeep(boolean shouldPlayBeep, Context activity) {
        if (shouldPlayBeep) {
            // See if sound settings overrides this
            AudioManager audioService =
                    (AudioManager) activity.getSystemService(Context.AUDIO_SERVICE);
            if (audioService.getRingerMode() != AudioManager.RINGER_MODE_NORMAL) {
                shouldPlayBeep = false;
            }
        }
        return shouldPlayBeep;
    }

    private MediaPlayer buildMediaPlayer(Context activity) {
        MediaPlayer mediaPlayer = new MediaPlayer();
        try {
            AssetFileDescriptor file = activity.getResources().openRawResourceFd(beepSource);
            try {
                mediaPlayer.setDataSource(file.getFileDescriptor(), file.getStartOffset(),
                        file.getLength());
            } finally {
                file.close();
            }
            mediaPlayer.setOnErrorListener(this);
            mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
            mediaPlayer.setLooping(false);
            mediaPlayer.setVolume(BEEP_VOLUME, BEEP_VOLUME);
            mediaPlayer.prepare();
            return mediaPlayer;
        } catch (IOException ioe) {
            Log.w(TAG, ioe);
            mediaPlayer.release();
            return null;
        }
    }

    public void setBeepResource(@RawRes int beepSource) {
        if (beepSource <= 0) {
            throw new IllegalArgumentException("请设置有效的声音资源id");
        }
        this.beepSource = beepSource;
        if (mediaPlayer == null) {
            buildMediaPlayer(activity);
        } else {
            AssetFileDescriptor file = activity.getResources().openRawResourceFd(beepSource);
            try {
                mediaPlayer.setDataSource(file.getFileDescriptor(), file.getStartOffset(),
                        file.getLength());
            } catch (IOException e) {
                e.printStackTrace();
            } finally {
                try {
                    file.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }

    @Override
    public synchronized boolean onError(MediaPlayer mp, int what, int extra) {
        if (what == MediaPlayer.MEDIA_ERROR_SERVER_DIED) {
            // we are finished, so put up an appropriate error toast if required and finish
            activity.finish();
        } else {
            // possibly media player error, so release and recreate
            close();
            updatePrefs();
        }
        return true;
    }

    @Override
    public synchronized void close() {
        if (mediaPlayer != null) {
            mediaPlayer.release();
            mediaPlayer = null;
        }
    }
}