cpd_2022_zi/lib/providers/audio_provider.dart

import 'dart:async';

import 'package:audioplayers/audioplayers.dart';
import 'package:flutter/cupertino.dart';

class AudioProvider extends ChangeNotifier {
  final AudioPlayer _audioPlayer = AudioPlayer();
  bool _isMuted = false;
  final Source _finishedSoundSource = AssetSource('finish.mp3');
  final Source _beepSoundSource = AssetSource('beep.mp3');
  StreamSubscription? _onCompleteSubscription;

  bool get isMuted => _isMuted;

  void stop() => _resetPlayer();

  void playFinishSound() {
    _resetPlayer();
    _audioPlayer.play(_finishedSoundSource);
  }

  void mutePlayer() {
    _isMuted = true;
    _audioPlayer.setVolume(0);
    notifyListeners();
  }

  void unMutePlayer() {
    _isMuted = false;
    _audioPlayer.setVolume(1);
    notifyListeners();
  }

  //resets player position and delete listening subscription
  void _resetPlayer() {
    _audioPlayer.stop();
    _onCompleteSubscription?.cancel();
  }

  void playSourceAfterBeep(AssetSource source) {
    _resetPlayer();
    _audioPlayer.play(_beepSoundSource);
    _onCompleteSubscription = _audioPlayer.onPlayerComplete.listen((event) {
      _audioPlayer.play(source);
      _audioPlayer.setReleaseMode(ReleaseMode.loop);
    });
  }
}