import 'dart:async';
import 'package:star_lock/blue/io_tool/manager_event_bus.dart';
import 'package:star_lock/talk/starChart/constant/talk_status.dart';

class StartChartTalkStatus {
  // 私有字段，用于存储当前状态
  TalkStatus _status = TalkStatus.uninitialized;

  // 私有化默认构造函数，防止外部创建实例
  StartChartTalkStatus._();

  // 静态私有字段，存储唯一的实例
  static final StartChartTalkStatus _instance = StartChartTalkStatus._();

  // 提供一个静态方法来获取单例实例
  static StartChartTalkStatus get instance => _instance;

  // 创建一个 StreamController 用于状态变化
  final StreamController<TalkStatus> _statusStreamController =
      StreamController<TalkStatus>.broadcast();

  // 提供一个方法来获取 Stream
  Stream<TalkStatus> get statusStream => _statusStreamController.stream;

  // 获取当前状态的 getter 方法
  TalkStatus get status => _status;

  // 内部方法，用于更新状态并触发状态变化事件
  void _setStatus(TalkStatus newStatus) {
    if (_status == newStatus) return; // 如果状态没有变化，直接返回
    print("对讲状态变化: ${_status} -> ${newStatus}");

    // 更新状态
    _status = newStatus;

    // 触发状态变化事件
    _statusStreamController.add(_status);
  }

  // 提供状态设置方法
  void setPassiveCallWaitingAnswer() => _setStatus(TalkStatus.passiveCallWaitingAnswer);
  void setProactivelyCallWaitingAnswer() => _setStatus(TalkStatus.proactivelyCallWaitingAnswer);

  void setWaitingData() => _setStatus(TalkStatus.waitingData);

  // void setDuringCall() => _setStatus(TalkStatus.duringCall);

  void setRejected() => _setStatus(TalkStatus.rejected);

  void setUninitialized() => _setStatus(TalkStatus.uninitialized);

  void setInitializationCompleted() =>
      _setStatus(TalkStatus.initializationCompleted);

  void setNotTalkData() => _setStatus(TalkStatus.notTalkData);

  void setNotTalkPing() => _setStatus(TalkStatus.notTalkPing);

  void setError() => _setStatus(TalkStatus.error);

  void setHangingUpDuring() => _setStatus(TalkStatus.hangingUpDuring);

  void setAnsweredSuccessfully() => _setStatus(TalkStatus.answeredSuccessfully);

  void setEnd() => _setStatus(TalkStatus.end);

  // 提供一个方法来关闭 StreamController
  void dispose() {
    _statusStreamController.close();
  }
}