import 'package:audioplayers/audioplayers.dart';
import 'package:flutter_smart_dialog/flutter_smart_dialog.dart';
import 'package:get/get.dart';

/// 语音播放管理器，单例模式，统一管理语音播放
class VoicePlayerManager extends GetxController {
  static VoicePlayerManager? _instance;
  static VoicePlayerManager get instance {
    _instance ??= Get.put(VoicePlayerManager());
    return _instance!;
  }

  final AudioPlayer _audioPlayer = AudioPlayer();
  String? _currentPlayingId;
  final Rx<String?> currentPlayingId = Rx<String?>(null);
  final Rx<PlayerState> playerState = Rx<PlayerState>(PlayerState.stopped);

  VoicePlayerManager() {
    // 监听播放状态变化
    _audioPlayer.onPlayerStateChanged.listen((state) {
      playerState.value = state;
      if (state == PlayerState.completed) {
        // 播放完成，重置状态
        _currentPlayingId = null;
        currentPlayingId.value = null;
      }
    });
  }

  /// 播放音频
  /// [audioId] 音频的唯一标识（通常是消息ID）
  /// [filePath] 音频文件路径
  Future<void> play(String audioId, String filePath) async {
    try {
      // 如果正在播放其他音频，先停止
      if (_currentPlayingId != null && _currentPlayingId != audioId) {
        await stop();
      }

      // 如果是同一个音频，则暂停/恢复
      if (_currentPlayingId == audioId) {
        if (playerState.value == PlayerState.playing) {
          await _audioPlayer.pause();
        } else {
          await _audioPlayer.resume();
        }
        return;
      }
      // 播放新音频
      _currentPlayingId = audioId;
      currentPlayingId.value = audioId;
      await _audioPlayer.play(DeviceFileSource(filePath));
    } catch (e) {
      print('播放音频失败: $e');
      _currentPlayingId = null;
      currentPlayingId.value = null;
    }
  }

  /// 停止播放
  Future<void> stop() async {
    try {
      await _audioPlayer.stop();
      _currentPlayingId = null;
      currentPlayingId.value = null;
    } catch (e) {
      print('停止播放失败: $e');
    }
  }

  /// 暂停播放
  Future<void> pause() async {
    try {
      await _audioPlayer.pause();
    } catch (e) {
      print('暂停播放失败: $e');
    }
  }

  /// 检查指定音频是否正在播放
  bool isPlaying(String audioId) {
    return _currentPlayingId == audioId &&
        playerState.value == PlayerState.playing;
  }

  /// 检查指定音频是否已加载
  bool isLoaded(String audioId) {
    return _currentPlayingId == audioId;
  }

  @override
  void onClose() {
    _audioPlayer.dispose();
    super.onClose();
  }
}