import 'package:flutter/services.dart';
import 'package:get/get.dart';
import 'package:flutter_dotenv/flutter_dotenv.dart';

/// 语音交互服务，用于管理原生的 VoiceInteractionService
class VoiceInteractionService extends GetxService {
  static VoiceInteractionService get to => Get.find();
  
  // 服务运行状态
  final _isRunning = false.obs;
  bool get isRunning => _isRunning.value;
  
  // 方法通道
  final MethodChannel _channel = const MethodChannel('com.deep_voice.voice_interaction');
  
  /// 初始化服务
  Future<VoiceInteractionService> init() async {
    // 获取服务运行状态
    await _updateServiceStatus();
    return this;
  }
  
  /// 启动语音交互服务
  Future<bool> startService() async {
    try {
      // 获取配置信息
      final speechKey = dotenv.env['AZURE_ASR_SUBSCRIPTION_KEY'] ?? '';
      final speechRegion = dotenv.env['AZURE_ASR_SERVICE_REGION'] ?? '';
      
      // 从 .env 读取火山 AI API Key
      final aiApiKey = dotenv.env['VOLCANO_AI_API_KEY'] ?? '';
      
      // 调用原生方法，传递配置参数
      final result = await _channel.invokeMethod<bool>('startVoiceInteractionService', {
        'azure_speech_key': speechKey,
        'azure_speech_region': speechRegion,
        'volcano_ai_api_key': aiApiKey,
      }) ?? false;
      
      await _updateServiceStatus();
      return result;
    } catch (e) {
      print('启动语音交互服务失败: $e');
      return false;
    }
  }
  
  /// 停止语音交互服务
  Future<bool> stopService() async {
    try {
      final result = await _channel.invokeMethod<bool>('stopVoiceInteractionService') ?? false;
      await _updateServiceStatus();
      return result;
    } catch (e) {
      print('停止语音交互服务失败: $e');
      return false;
    }
  }
  
  /// 更新服务状态
  Future<void> _updateServiceStatus() async {
    try {
      final status = await _channel.invokeMethod<bool>('isVoiceInteractionServiceRunning') ?? false;
      _isRunning.value = status;
    } catch (e) {
      print('获取语音交互服务状态失败: $e');
      _isRunning.value = false;
    }
  }
}