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

class SpeechDemoPage extends StatefulWidget {
  const SpeechDemoPage({Key? key}) : super(key: key);

  @override
  _SpeechDemoPageState createState() => _SpeechDemoPageState();
}

class _SpeechDemoPageState extends State<SpeechDemoPage> {
  final VoiceRecognitionService _recognitionService = Get.find<VoiceRecognitionService>();
  
  @override
  void initState() {
    super.initState();
    _initializeEngine();
  }

  Future<void> _initializeEngine() async {
    try {
      await _recognitionService.initialize();
    } catch (e) {
      if (mounted) {
        ScaffoldMessenger.of(context).showSnackBar(
          SnackBar(content: Text('初始化失败: $e')),
        );
      }
    }
  }

  Future<void> _startRecognition() async {
    try {
      await _recognitionService.startRecognition();
    } catch (e) {
      if (mounted) {
        ScaffoldMessenger.of(context).showSnackBar(
          SnackBar(content: Text('启动识别失败: $e')),
        );
      }
    }
  }

  Future<void> _stopRecognition() async {
    try {
      await _recognitionService.stopRecognition();
    } catch (e) {
      if (mounted) {
        ScaffoldMessenger.of(context).showSnackBar(
          SnackBar(content: Text('停止识别失败: $e')),
        );
      }
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('火山语音识别演示'),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            // 状态显示
            Obx(() {
              String status = '准备中';
              if (_recognitionService.isConnecting.value) {
                status = '连接中...';
              } else if (_recognitionService.isInitialized.value) {
                status = _recognitionService.isListening.value ? '正在听...' : '就绪';
              }
              return Text('状态: $status', style: const TextStyle(fontSize: 18));
            }),
            
            const SizedBox(height: 20),
            
            // 识别结果显示
            Padding(
              padding: const EdgeInsets.all(16.0),
              child: Container(
                width: double.infinity,
                height: 200,
                decoration: BoxDecoration(
                  border: Border.all(color: Colors.grey),
                  borderRadius: BorderRadius.circular(8),
                ),
                padding: const EdgeInsets.all(16),
                child: Obx(() {
                  return SingleChildScrollView(
                    child: Text(
                      _recognitionService.recognizedText.value,
                      style: const TextStyle(fontSize: 16),
                    ),
                  );
                }),
              ),
            ),
            
            const SizedBox(height: 20),
            
            // 控制按钮
            Row(
              mainAxisAlignment: MainAxisAlignment.center,
              children: [
                Obx(() {
                  return ElevatedButton(
                    onPressed: _recognitionService.isInitialized.value && !_recognitionService.isListening.value
                        ? _startRecognition
                        : null,
                    child: const Text('开始识别'),
                  );
                }),
                
                const SizedBox(width: 20),
                
                Obx(() {
                  return ElevatedButton(
                    onPressed: _recognitionService.isListening.value
                        ? _stopRecognition
                        : null,
                    style: ElevatedButton.styleFrom(
                      backgroundColor: Colors.red,
                    ),
                    child: const Text('停止识别'),
                  );
                }),
              ],
            ),
          ],
        ),
      ),
    );
  }
}