import 'package:get/get.dart';
import 'package:flutter/foundation.dart';
import '../../../data/services/voice_recognition_service.dart';

class VoiceInputController extends GetxController {
  final VoiceRecognitionService _recognitionService;
  
  // Observable states
  final isConnecting = true.obs;
  final isMuted = false.obs;
  final isRecording = false.obs;
  final recognizedText = ''.obs;
  
  // Callbacks
  final Function(String) onRecordingResult;
  final VoidCallback onClosePanel;
  final Function(String) onRecognizing;

  VoiceInputController({
    required this.onRecordingResult,
    required this.onClosePanel,
    required this.onRecognizing,
  }) : _recognitionService = Get.find<VoiceRecognitionService>();

  @override
  void onInit() {
    super.onInit();
    _setupRecognitionCallbacks();
    _initializeRecognition();
  }

  void _setupRecognitionCallbacks() {
    _recognitionService.onRecognitionResult = (result) {
      if (isMuted.value) return;
      recognizedText.value = result;
      onRecognizing(result);
    };

    _recognitionService.onError = (error) {
      Get.snackbar(
        'Error',
        '语音识别失败: $error',
        snackPosition: SnackPosition.BOTTOM,
      );
      stopRecording();
    };

    _recognitionService.onRecognitionComplete = () {
      stopRecording();
      if (!isMuted.value && recognizedText.value.isNotEmpty) {
        onRecordingResult(recognizedText.value);
        recognizedText.value = '';
        startRecording();
      }
    };
  }

  Future<void> _initializeRecognition() async {
    try {
      isConnecting.value = true;
      await _recognitionService.startRecognition();
      isConnecting.value = false;
    } catch (e) {
      Get.snackbar(
        'Error',
        '初始化语音识别失败: $e',
        snackPosition: SnackPosition.BOTTOM,
      );
      onClosePanel();
    }
  }

  Future<void> startRecording() async {
    try {
      await _recognitionService.startRecognition();
      isRecording.value = true;
      recognizedText.value = '';
    } catch (e) {
      Get.snackbar(
        'Error',
        '启动语音识别失败: $e',
        snackPosition: SnackPosition.BOTTOM,
      );
    }
  }

  Future<void> stopRecording() async {
    if (!isRecording.value) return;

    try {
      await _recognitionService.stopRecognition();
    } catch (e) {
      debugPrint('Error stopping recording: $e');
    } finally {
      isRecording.value = false;
    }
  }

  void toggleMute() {
    isMuted.value = !isMuted.value;
  }

  @override
  void onClose() {
    // 停止录音
    stopRecording();
    
    // 清理回调
    _recognitionService.onRecognitionResult = null;
    _recognitionService.onError = null;
    _recognitionService.onRecognitionComplete = null;
    
    // 重置状态
    isConnecting.value = false;
    isMuted.value = false;
    isRecording.value = false;
    recognizedText.value = '';
    
    // 确保语音识别服务停止
    try {
      _recognitionService.stopRecognition();
    } catch (e) {
      debugPrint('Error stopping recognition service: $e');
    }
    
    super.onClose();
  }
}