import 'package:flutter/material.dart';
import 'package:get/get.dart';
import '../controllers/azure_asr_test_controller.dart';
import '../../../data/services/azure_asr_service.dart';

class AzureAsrTestView extends GetView<AzureAsrTestController> {
  const AzureAsrTestView({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Azure语音识别测试'),
        actions: [
          _buildLanguageDropdown(),
        ],
      ),
      body: Padding(
        padding: const EdgeInsets.all(16.0),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.stretch,
          children: [
            _buildStatusCard(),
            const SizedBox(height: 16),
            _buildRecognitionResultCard(),
            const SizedBox(height: 16),
            _buildControlButtons(context),
          ],
        ),
      ),
    );
  }

  // 构建状态卡片
  Widget _buildStatusCard() {
    return Card(
      child: Padding(
        padding: const EdgeInsets.all(16.0),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            const Text(
              '状态信息',
              style: TextStyle(
                fontSize: 18,
                fontWeight: FontWeight.bold,
              ),
            ),
            const SizedBox(height: 8),
            Obx(() => Text('识别状态: ${_getStateText(controller.asrState.value)}')),
            Obx(() => Text('是否正在监听: ${controller.isListening.value ? "是" : "否"}')),
            Obx(() => Text('当前语言: ${controller.selectedLanguage.value}')),
          ],
        ),
      ),
    );
  }

  // 构建识别结果卡片
  Widget _buildRecognitionResultCard() {
    return Expanded(
      child: Card(
        child: Padding(
          padding: const EdgeInsets.all(16.0),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              const Text(
                '识别结果',
                style: TextStyle(
                  fontSize: 18,
                  fontWeight: FontWeight.bold,
                ),
              ),
              const SizedBox(height: 8),
              const Text('部分识别结果:'),
              Obx(() => Text(
                    controller.partialText.value,
                    style: const TextStyle(color: Colors.blue),
                  )),
              const SizedBox(height: 16),
              const Text('最终识别结果:'),
              Expanded(
                child: Obx(() => SingleChildScrollView(
                      child: Text(
                        controller.recognizedText.value,
                        style: const TextStyle(
                          fontWeight: FontWeight.bold,
                          fontSize: 16,
                        ),
                      ),
                    )),
              ),
            ],
          ),
        ),
      ),
    );
  }

  // 构建控制按钮
  Widget _buildControlButtons(BuildContext context) {
    return Row(
      mainAxisAlignment: MainAxisAlignment.spaceEvenly,
      children: [
        Expanded(
          child: Obx(() => ElevatedButton(
                onPressed: controller.isListening.value
                    ? null
                    : controller.startSimpleRecognition,
                child: const Text('简单识别'),
              )),
        ),
        const SizedBox(width: 16),
        Expanded(
          child: Obx(() => ElevatedButton(
                onPressed: controller.toggleContinuousRecognition,
                style: ElevatedButton.styleFrom(
                  backgroundColor: controller.isListening.value
                      ? Colors.red
                      : Theme.of(context).primaryColor,
                ),
                child: Text(
                  controller.isListening.value ? '停止连续识别' : '开始连续识别',
                ),
              )),
        ),
      ],
    );
  }

  // 构建语言下拉菜单
  Widget _buildLanguageDropdown() {
    return Padding(
      padding: const EdgeInsets.only(right: 16.0),
      child: Obx(() => DropdownButton<String>(
            value: controller.selectedLanguage.value,
            onChanged: controller.isListening.value
                ? null
                : (value) {
                    if (value != null) {
                      controller.changeLanguage(value);
                    }
                  },
            items: controller.availableLanguages
                .map<DropdownMenuItem<String>>((String value) {
              return DropdownMenuItem<String>(
                value: value,
                child: Text(value),
              );
            }).toList(),
          )),
    );
  }

  // 获取状态文本
  String _getStateText(AzureAsrState state) {
    switch (state) {
      case AzureAsrState.notInitialized:
        return '未初始化';
      case AzureAsrState.initialized:
        return '已初始化';
      case AzureAsrState.listening:
        return '正在监听';
      case AzureAsrState.notListening:
        return '未监听';
      case AzureAsrState.error:
        return '错误';
      default:
        return '未知';
    }
  }
}