import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:get/get.dart';
import '../controllers/realtime_controller.dart';
import 'widgets/voice_mic_flow.dart';

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

  @override
  Widget build(BuildContext context) {
    // 设置状态栏为黑色文字
    SystemChrome.setSystemUIOverlayStyle(
      const SystemUiOverlayStyle(
        statusBarColor: Colors.transparent,
        statusBarIconBrightness: Brightness.dark,
        statusBarBrightness: Brightness.light,
      ),
    );

    return Scaffold(
      backgroundColor: Colors.white,
      body: SafeArea(
        child: Stack(
          children: [
            // 右上角图标按钮
            Positioned(
              top: 16,
              right: 16,
              child: Row(
                mainAxisSize: MainAxisSize.min,
                children: [
                  // 分享按钮
                  Icon(
                    Icons.ios_share,
                    color: Colors.grey[600],
                    size: 24,
                  ),
                  const SizedBox(width: 20),
                  // 设置按钮
                  Icon(
                    Icons.tune,
                    color: Colors.grey[600],
                    size: 24,
                  ),
                ],
              ),
            ),

            // 状态和字幕显示区域
            Positioned(
              top: 100,
              left: 20,
              right: 20,
              child: Column(
                children: [
                  // 当前状态显示
                  Obx(() => Container(
                    width: double.infinity,
                    padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
                    margin: const EdgeInsets.only(bottom: 12),
                    decoration: BoxDecoration(
                      color: Colors.black.withOpacity(0.1),
                      borderRadius: BorderRadius.circular(20),
                    ),
                    child: Text(
                      controller.currentStatus.value,
                      textAlign: TextAlign.center,
                      style: const TextStyle(
                        fontSize: 16,
                        fontWeight: FontWeight.w500,
                        color: Colors.black87,
                      ),
                    ),
                  )),
                  
                  // 用户ASR内容显示
                  Obx(() => AnimatedContainer(
                    duration: const Duration(milliseconds: 300),
                    width: double.infinity,
                    height: controller.userSpeechText.value.isNotEmpty ? null : 0,
                    padding: controller.userSpeechText.value.isNotEmpty 
                        ? const EdgeInsets.symmetric(horizontal: 16, vertical: 12)
                        : EdgeInsets.zero,
                    margin: controller.userSpeechText.value.isNotEmpty 
                        ? const EdgeInsets.only(bottom: 8)
                        : EdgeInsets.zero,
                    decoration: BoxDecoration(
                      color: Colors.blue.withOpacity(0.1),
                      borderRadius: BorderRadius.circular(16),
                      border: Border.all(
                        color: Colors.blue.withOpacity(0.3),
                        width: 1,
                      ),
                    ),
                    child: controller.userSpeechText.value.isNotEmpty
                        ? Column(
                            crossAxisAlignment: CrossAxisAlignment.start,
                            children: [
                              const Text(
                                '你说：',
                                style: TextStyle(
                                  fontSize: 12,
                                  fontWeight: FontWeight.w600,
                                  color: Colors.blue,
                                ),
                              ),
                              const SizedBox(height: 4),
                              Text(
                                controller.userSpeechText.value,
                                style: const TextStyle(
                                  fontSize: 14,
                                  color: Colors.black87,
                                ),
                              ),
                            ],
                          )
                        : null,
                  )),
                  
                  // AI回复内容显示
                  Obx(() => AnimatedContainer(
                    duration: const Duration(milliseconds: 300),
                    width: double.infinity,
                    height: controller.aiResponseText.value.isNotEmpty ? null : 0,
                    padding: controller.aiResponseText.value.isNotEmpty 
                        ? const EdgeInsets.symmetric(horizontal: 16, vertical: 12)
                        : EdgeInsets.zero,
                    margin: controller.aiResponseText.value.isNotEmpty 
                        ? const EdgeInsets.only(bottom: 20)
                        : EdgeInsets.zero,
                    decoration: BoxDecoration(
                      color: Colors.green.withOpacity(0.1),
                      borderRadius: BorderRadius.circular(16),
                      border: Border.all(
                        color: Colors.green.withOpacity(0.3),
                        width: 1,
                      ),
                    ),
                    child: controller.aiResponseText.value.isNotEmpty
                        ? Column(
                            crossAxisAlignment: CrossAxisAlignment.start,
                            children: [
                              const Text(
                                'AI回复：',
                                style: TextStyle(
                                  fontSize: 12,
                                  fontWeight: FontWeight.w600,
                                  color: Colors.green,
                                ),
                              ),
                              const SizedBox(height: 4),
                              Text(
                                controller.aiResponseText.value,
                                style: const TextStyle(
                                  fontSize: 14,
                                  color: Colors.black87,
                                ),
                              ),
                            ],
                          )
                        : null,
                  )),
                ],
              ),
            ),

            // 中间会呼吸的云彩动画
            Positioned.fill(
              child: Align(
                alignment: const Alignment(0, 0.1),
                child: const VoiceMicFlow(size: 280),
              ),
            ),

            // 底部控制按钮
            Positioned(
              bottom: 80,
              left: 0,
              right: 0,
              child: Padding(
                padding: const EdgeInsets.symmetric(horizontal: 40),
                child: Row(
                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
                  children: [
                    // 摄像头按钮
                    _buildBottomButton(Icons.videocam, null),
                    // 麦克风按钮
                    _buildBottomButton(Icons.mic_none, controller.toggleListening),
                    // 更多按钮
                    _buildBottomButton(Icons.more_horiz, null),
                    // 关闭按钮
                    _buildBottomButton(Icons.close, controller.closeAndGoBack),
                  ],
                ),
              ),
            ),

            // Home Indicator
            Positioned(
              bottom: 8,
              left: 0,
              right: 0,
              child: Center(
                child: Container(
                  width: 134,
                  height: 5,
                  decoration: BoxDecoration(
                    color: Colors.black,
                    borderRadius: BorderRadius.circular(2.5),
                  ),
                ),
              ),
            ),
          ],
        ),
      ),
    );
  }

  /// 构建底部圆形按钮
  Widget _buildBottomButton(IconData icon, VoidCallback? onTap) {
    return GestureDetector(
      onTap: onTap,
      child: Container(
        width: 60,
        height: 60,
        decoration: BoxDecoration(
          color: Colors.grey[200],
          shape: BoxShape.circle,
        ),
        child: Icon(
          icon,
          color: Colors.black,
          size: 26,
        ),
      ),
    );
  }
}