import 'dart:async';

import 'package:flutter/material.dart';

import 'package:cached_video_player_plus/cached_video_player_plus.dart';

class VideoControlsOverlay extends StatefulWidget {
  final CachedVideoPlayerPlusController controller;
  final VoidCallback onOverlayTap;
  final bool muted;
  final VoidCallback onMuteToggle;

  const VideoControlsOverlay({
    super.key,
    required this.controller,
    required this.onOverlayTap,
    required this.muted,
    required this.onMuteToggle,
  });

  @override
  State<VideoControlsOverlay> createState() => _VideoControlsOverlayState();
}

class _VideoControlsOverlayState extends State<VideoControlsOverlay> {
  bool _showSeekIndicator = false;
  bool _isRewinding = false;
  Timer? _hideTimer;

  @override
  void dispose() {
    _hideTimer?.cancel();
    super.dispose();
  }

  void _handleDoubleTap(TapDownDetails details) {
    final screenWidth = MediaQuery.of(context).size.width;
    final isRewind = details.globalPosition.dx < screenWidth / 2;

    Future(() {
      if (isRewind) {
        final newPosition =
            widget.controller.value.position - const Duration(seconds: 10);
        widget.controller.seekTo(
          newPosition < Duration.zero ? Duration.zero : newPosition,
        );
      } else {
        final newPosition =
            widget.controller.value.position + const Duration(seconds: 10);
        final duration = widget.controller.value.duration;
        widget.controller.seekTo(
          newPosition > duration ? duration : newPosition,
        );
      }
    });

    _hideTimer?.cancel();
    setState(() {
      _showSeekIndicator = true;
      _isRewinding = isRewind;
    });
    _hideTimer = Timer(const Duration(milliseconds: 500), () {
      setState(() => _showSeekIndicator = false);
    });
  }

  @override
  Widget build(BuildContext context) {
    return Stack(
      alignment: Alignment.center,
      children: [
        GestureDetector(
          onTap: widget.onOverlayTap,
          onDoubleTapDown: _handleDoubleTap,
          child: Container(color: Colors.transparent),
        ),
        AnimatedOpacity(
          opacity: _showSeekIndicator ? 1.0 : 0.0,
          duration: const Duration(milliseconds: 200),
          child: Align(
            alignment: _isRewinding
                ? Alignment.centerLeft
                : Alignment.centerRight,
            child: Padding(
              padding: const EdgeInsets.symmetric(horizontal: 40.0),
              child: Icon(
                _isRewinding
                    ? Icons.fast_rewind_rounded
                    : Icons.fast_forward_rounded,
                color: Colors.white70,
                size: 60,
              ),
            ),
          ),
        ),
        _ControlButton(
          widget.controller.value.isPlaying ? Icons.pause : Icons.play_arrow,
          () {
            widget.onOverlayTap();
            widget.controller.value.isPlaying
                ? widget.controller.pause()
                : widget.controller.play();
          },
          size: 64,
        ),
        Positioned(
          right: 12,
          bottom: 12,
          child: _ControlButton(
            widget.muted ? Icons.volume_off : Icons.volume_up,
            () {
              widget.onOverlayTap();
              widget.onMuteToggle();
            },
            size: 16,
          ),
        ),
        Align(
          alignment: Alignment.bottomCenter,
          child: Padding(
            padding: const EdgeInsets.only(bottom: 0),
            child: Stack(
              clipBehavior: Clip.none,
              children: [
                Positioned(
                  left: 10,
                  bottom: 12,
                  child: Text(
                    '${_formatDuration(widget.controller.value.position)} / ${_formatDuration(widget.controller.value.duration)}',
                    style: const TextStyle(color: Colors.white, fontSize: 12),
                  ),
                ),
                Listener(
                  onPointerDown: (_) {
                    widget.onOverlayTap();
                  },
                  child: VideoProgressIndicator(
                    widget.controller,
                    allowScrubbing: true,
                    padding: const EdgeInsets.only(top: 25.0),
                    colors: const VideoProgressColors(
                      playedColor: Colors.red,
                      backgroundColor: Colors.grey,
                      bufferedColor: Colors.white54,
                    ),
                  ),
                ),
                if (widget.controller.value.duration.inMilliseconds > 0)
                  Positioned(
                    left:
                        (widget.controller.value.position.inMilliseconds /
                                widget
                                    .controller
                                    .value
                                    .duration
                                    .inMilliseconds) *
                            MediaQuery.of(context).size.width -
                        6,
                    bottom: -4,
                    child: Container(
                      width: 12,
                      height: 12,
                      decoration: BoxDecoration(
                        shape: BoxShape.circle,
                        color: Colors.red,
                        border: Border.all(color: Colors.red, width: 2),
                      ),
                    ),
                  ),
              ],
            ),
          ),
        ),
      ],
    );
  }

  String _formatDuration(Duration? duration) {
    if (duration == null) return '00:00';
    String twoDigits(int n) => n.toString().padLeft(2, '0');
    return "${twoDigits(duration.inMinutes % 60)}:${twoDigits(duration.inSeconds % 60)}";
  }
}

class _ControlButton extends StatelessWidget {
  final IconData icon;
  final VoidCallback onPressed;
  final double size;

  const _ControlButton(this.icon, this.onPressed, {this.size = 24});

  @override
  Widget build(BuildContext context) {
    return Container(
      decoration: BoxDecoration(
        shape: BoxShape.circle,
        color: Colors.black.withValues(alpha: 0.4),
      ),
      child: IconButton(
        icon: Icon(icon, size: size),
        onPressed: onPressed,
      ),
    );
  }
}