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

///弹窗组件：VideoPlayerPopup
class VideoPlayerPopup extends StatefulWidget {
  /// 视频地址
  final String videoUrl;
  const VideoPlayerPopup({Key? key, required this.videoUrl}) : super(key: key);

  @override
  State<VideoPlayerPopup> createState() => _VideoPlayerPopupState();

}

class _VideoPlayerPopupState extends State<VideoPlayerPopup> {
  late VideoPlayerController _controller;
  bool _showControls = true;

  @override
  void initState() {
    super.initState();
    _controller = VideoPlayerController.networkUrl(
      Uri.parse(widget.videoUrl),
    )..initialize().then((_) {
        setState(() {});
        _controller.play();
      });
    // 自动隐藏控件
    _controller.addListener(() {
      if (_controller.value.isPlaying && _showControls) {
        Future.delayed(const Duration(seconds: 3), () {
          if (_controller.value.isPlaying && mounted) {
            setState(() => _showControls = false);
          }
        });
      }
    });
  }

  @override
  void dispose() {
    _controller.dispose();
    super.dispose();
  }

  Widget _buildControls() {
    final pos = _controller.value.position;
    final dur = _controller.value.duration;
    String fmt(Duration d) =>
        '${d.inMinutes.remainder(60).toString().padLeft(2, '0')}:'
            '${d.inSeconds.remainder(60).toString().padLeft(2, '0')}';

    return Positioned.fill(
      child: AnimatedOpacity(
        opacity: _showControls ? 1 : 0,
        duration: const Duration(milliseconds: 300),
        child: GestureDetector(
          onTap: () => setState(() => _showControls = !_showControls),
          child: Container(
            color: Colors.black45,
            child: Column(
              mainAxisAlignment: MainAxisAlignment.end,
              children: [
                // 进度条
                Slider(
                  value: pos.inMilliseconds.toDouble().clamp(0, dur.inMilliseconds.toDouble()),
                  max: dur.inMilliseconds.toDouble(),
                  onChanged: (v) {
                    _controller.seekTo(Duration(milliseconds: v.toInt()));
                  },
                ),
                // 时间 + 控制按钮
                Padding(
                  padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8),
                  child: Row(
                    children: [
                      IconButton(
                        icon: Icon(
                          _controller.value.isPlaying ? Icons.pause : Icons.play_arrow,
                          color: Colors.white,
                        ),
                        onPressed: () {
                          setState(() {
                            _controller.value.isPlaying
                                ? _controller.pause()
                                : _controller.play();
                          });
                        },
                      ),
                      Text(
                        '${fmt(pos)} / ${fmt(dur)}',
                        style: const TextStyle(color: Colors.white),
                      ),
                      const Spacer(),
                      IconButton(
                        icon: const Icon(Icons.fullscreen, color: Colors.white),
                        onPressed: () {
                          Navigator.of(context).push(MaterialPageRoute(
                              builder: (_) => FullScreenVideoPage(
                                  controller: _controller)));
                        },
                      ),
                    ],
                  ),
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }

  @override
  Widget build(BuildContext context) {
    return Center(
      child: Material(
        color: Colors.transparent,
        child: Container(
          constraints: BoxConstraints(
            maxWidth: MediaQuery.of(context).size.width * 0.9,
            maxHeight: MediaQuery.of(context).size.height * 0.8,
          ),
          decoration: BoxDecoration(
            color: Colors.white,
            borderRadius: BorderRadius.circular(8),
          ),
          child: Stack(
            children: [
              // 视频内容
              if (_controller.value.isInitialized)
                AspectRatio(
                  aspectRatio: _controller.value.aspectRatio,
                  child: VideoPlayer(_controller),
                )
              else
                const Center(child: CircularProgressIndicator()),

              // 关闭按钮
              Positioned(
                top: 4,
                right: 4,
                child: IconButton(
                  icon: const Icon(Icons.close, color: Colors.black54),
                  onPressed: () => Navigator.of(context).pop(),
                ),
              ),

              // 播放控制
              if (_controller.value.isInitialized) _buildControls(),
            ],
          ),
        ),
      ),
    );
  }
}

/// 全屏横屏播放页面：FullScreenVideoPage
class FullScreenVideoPage extends StatefulWidget {
  final VideoPlayerController controller;
  const FullScreenVideoPage({Key? key, required this.controller}) : super(key: key);

  @override
  State<FullScreenVideoPage> createState() => _FullScreenVideoPageState();
}

class _FullScreenVideoPageState extends State<FullScreenVideoPage> {
  VideoPlayerController get _controller => widget.controller;

  @override
  void initState() {
    super.initState();
    // 进入横屏、沉浸式
    SystemChrome.setPreferredOrientations([
      DeviceOrientation.landscapeLeft,
      DeviceOrientation.landscapeRight,
    ]);
    SystemChrome.setEnabledSystemUIMode(SystemUiMode.immersiveSticky);
  }

  @override
  void dispose() {
    // 恢复竖屏
    SystemChrome.setEnabledSystemUIMode(SystemUiMode.edgeToEdge);
    SystemChrome.setPreferredOrientations([
      DeviceOrientation.portraitUp,
      DeviceOrientation.portraitDown,
    ]);
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Colors.black,
      body: Center(
        child: Stack(
          children: [
            // 全屏视频
            if (_controller.value.isInitialized)
              SizedBox.expand(child: VideoPlayer(_controller))
            else
              const Center(child: CircularProgressIndicator()),

            // 简单控制：点击画面切换播放/暂停
            GestureDetector(
              onTap: () {
                setState(() {
                  _controller.value.isPlaying
                      ? _controller.pause()
                      : _controller.play();
                });
              },
            ),

            // 返回按钮
            Positioned(
              top: 20,
              left: 20,
              child: IconButton(
                icon: const Icon(Icons.arrow_back, color: Colors.white, size: 28),
                onPressed: () => Navigator.of(context).pop(),
              ),
            ),

            // 时间 & 进度条（简单版）
            if (_controller.value.isInitialized)
              Positioned(
                bottom: 20,
                left: 20,
                right: 20,
                child: Row(
                  children: [
                    Text(
                      '${_format(_controller.value.position)} / ${_format(_controller.value.duration)}',
                      style: const TextStyle(color: Colors.white),
                    ),
                    const SizedBox(width: 12),
                    Expanded(
                      child: VideoProgressIndicator(
                        _controller,
                        allowScrubbing: true,
                        colors: VideoProgressColors(
                          playedColor: Colors.red,
                          bufferedColor: Colors.white54,
                          backgroundColor: Colors.white30,
                        ),
                      ),
                    ),
                  ],
                ),
              ),
          ],
        ),
      ),
    );
  }

  String _format(Duration d) =>
      '${d.inMinutes.remainder(60).toString().padLeft(2, '0')}:'
          '${d.inSeconds.remainder(60).toString().padLeft(2, '0')}';
}