import 'dart:io';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:video_player/video_player.dart';
import 'package:chewie/chewie.dart';
import 'package:get/get.dart';

/// 视频播放页面
class VideoPlayerPage extends StatefulWidget {
  final String videoPath;
  final bool isNetwork;

  const VideoPlayerPage({
    required this.videoPath,
    this.isNetwork = false,
    super.key,
  });

  @override
  State<VideoPlayerPage> createState() => _VideoPlayerPageState();
}

class _VideoPlayerPageState extends State<VideoPlayerPage> {
  late VideoPlayerController _videoPlayerController;
  ChewieController? _chewieController;
  bool _isLoading = true;
  String? _errorMessage;

  @override
  void initState() {
    super.initState();
    _initializePlayer();
  }

  Future<void> _initializePlayer() async {
    try {
      // 创建视频控制器
      if (widget.isNetwork) {
        _videoPlayerController = VideoPlayerController.networkUrl(
          Uri.parse(widget.videoPath),
        );
      } else {
        _videoPlayerController = VideoPlayerController.file(
          File(widget.videoPath),
        );
      }

      // 初始化视频
      await _videoPlayerController.initialize();

      // 创建 Chewie 控制器
      _chewieController = ChewieController(
        videoPlayerController: _videoPlayerController,
        autoPlay: true,
        looping: false,
        aspectRatio: _videoPlayerController.value.aspectRatio,
        // 显示控制栏
        showControls: true,
        // 自动隐藏控制栏
        autoInitialize: true,
        // 错误提示
        errorBuilder: (context, errorMessage) {
          return Center(
            child: Column(
              mainAxisAlignment: MainAxisAlignment.center,
              children: [
                const Icon(
                  Icons.error_outline,
                  color: Colors.white,
                  size: 48,
                ),
                const SizedBox(height: 16),
                Text(
                  '播放失败\n$errorMessage',
                  style: const TextStyle(color: Colors.white),
                  textAlign: TextAlign.center,
                ),
              ],
            ),
          );
        },
        // 允许全屏
        allowFullScreen: true,
        // 允许静音
        allowMuting: true,
        // 显示播放速度选项
        allowPlaybackSpeedChanging: true,
        // 播放速度选项
        playbackSpeeds: const [0.5, 0.75, 1.0, 1.25, 1.5, 2.0],
        // 材质进度条颜色
        materialProgressColors: ChewieProgressColors(
          playedColor: Theme.of(context).primaryColor,
          handleColor: Theme.of(context).primaryColor,
          backgroundColor: Colors.grey,
          bufferedColor: Colors.grey[300]!,
        ),
      );

      setState(() {
        _isLoading = false;
      });
    } catch (e) {
      setState(() {
        _isLoading = false;
        _errorMessage = e.toString();
      });
      print('❌ 视频初始化失败: $e');
    }
  }

  @override
  void dispose() {
    _chewieController?.dispose();
    _videoPlayerController.dispose();
    // 恢复系统UI
    SystemChrome.setEnabledSystemUIMode(SystemUiMode.edgeToEdge);
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Colors.black,
      body: SafeArea(
        child: Stack(
          children: [
            // 视频播放器
            Center(
              child: _isLoading
                  ? const CircularProgressIndicator(
                      valueColor: AlwaysStoppedAnimation<Color>(Colors.white),
                    )
                  : _errorMessage != null
                      ? _buildErrorWidget()
                      : _chewieController != null
                          ? Chewie(controller: _chewieController!)
                          : const SizedBox.shrink(),
            ),
            // 关闭按钮
            Positioned(
              top: 16,
              left: 16,
              child: Material(
                color: Colors.black.withOpacity(0.5),
                shape: const CircleBorder(),
                child: IconButton(
                  icon: const Icon(
                    Icons.close,
                    color: Colors.white,
                    size: 28,
                  ),
                  onPressed: () => Get.back(),
                ),
              ),
            ),
          ],
        ),
      ),
    );
  }

  Widget _buildErrorWidget() {
    return Center(
      child: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
          const Icon(
            Icons.error_outline,
            color: Colors.white,
            size: 64,
          ),
          const SizedBox(height: 16),
          const Text(
            '视频加载失败',
            style: TextStyle(
              color: Colors.white,
              fontSize: 18,
              fontWeight: FontWeight.bold,
            ),
          ),
          const SizedBox(height: 8),
          Padding(
            padding: const EdgeInsets.symmetric(horizontal: 32),
            child: Text(
              _errorMessage ?? '未知错误',
              style: const TextStyle(
                color: Colors.white70,
                fontSize: 14,
              ),
              textAlign: TextAlign.center,
            ),
          ),
          const SizedBox(height: 24),
          ElevatedButton.icon(
            onPressed: () {
              setState(() {
                _isLoading = true;
                _errorMessage = null;
              });
              _initializePlayer();
            },
            icon: const Icon(Icons.refresh),
            label: const Text('重试'),
            style: ElevatedButton.styleFrom(
              backgroundColor: Colors.white,
              foregroundColor: Colors.black,
            ),
          ),
        ],
      ),
    );
  }
}