import 'dart:async';

import 'package:audioplayers/audioplayers.dart';
import 'package:vibration/vibration.dart';

/// 提醒：同类目标 10s 内只提醒一次。
/// 震动/提示音默认开启，不提供关闭入口。
class Reminder {
  final AudioPlayer _player = AudioPlayer();
  String? _lastAlertLabel;
  int _lastAlertAt = 0;

  /// 同类目标 10s 内只提醒一次
  void onDetected(String label) {
    final now = DateTime.now().millisecondsSinceEpoch;
    if (label == _lastAlertLabel && now - _lastAlertAt < 10000) return;
    _lastAlertAt = now;
    _lastAlertLabel = label;

    _vibrate();
    _playTone();
  }

  void _vibrate() => Vibration.vibrate(duration: 200);

  Future<void> _playTone() async {
    await _player.stop();
    await _player.play(AssetSource('beep.wav'));
  }

  void release() {
    _player.dispose();
  }
}