import 'dart:async';
import 'package:flutter/material.dart';
import 'package:cached_video_player_plus/cached_video_player_plus.dart';
import 'package:get/get.dart';
import 'package:f0ckapp/controller/settingscontroller.dart';

class VideoControlsOverlay extends StatefulWidget {
  final CachedVideoPlayerPlusController controller;
  final VoidCallback? onDoubleTap;

  const VideoControlsOverlay({
    super.key,
    required this.controller,
    this.onDoubleTap,
  });

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

class _VideoControlsOverlayState extends State<VideoControlsOverlay> {
  final SettingsController _settingsController = Get.find();
  Timer? _hideTimer;
  bool _controlsVisible = false;

  bool _isScrubbing = false;
  Duration _scrubbingStartPosition = Duration.zero;
  double _scrubbingStartDx = 0.0;
  Duration _scrubbingSeekPosition = Duration.zero;

  @override
  void initState() {
    super.initState();
    widget.controller.addListener(_listener);
  }

  @override
  void dispose() {
    _hideTimer?.cancel();
    widget.controller.removeListener(_listener);
    super.dispose();
  }

  void _listener() {
    if (mounted) {
      setState(() {});
    }
  }

  void _startHideTimer() {
    _hideTimer?.cancel();
    _hideTimer = Timer(const Duration(seconds: 5), () {
      if (mounted) {
        setState(() => _controlsVisible = false);
      }
    });
  }

  void _toggleControlsVisibility() {
    setState(() => _controlsVisible = !_controlsVisible);
    if (_controlsVisible) {
      _startHideTimer();
    }
  }

  void _handlePlayPause() {
    widget.controller.value.isPlaying
        ? widget.controller.pause()
        : widget.controller.play();
    _startHideTimer();
  }

  void _onHorizontalDragStart(DragStartDetails details) {
    if (!widget.controller.value.isInitialized || !_controlsVisible) return;

    setState(() {
      _isScrubbing = true;
      _scrubbingStartPosition = widget.controller.value.position;
      _scrubbingStartDx = details.globalPosition.dx;
      _scrubbingSeekPosition = widget.controller.value.position;
    });
    _hideTimer?.cancel();
  }

  void _onHorizontalDragUpdate(DragUpdateDetails details) {
    if (!_isScrubbing) return;

    final double delta = details.globalPosition.dx - _scrubbingStartDx;
    final int seekMillis =
        _scrubbingStartPosition.inMilliseconds + (delta * 300).toInt();

    setState(() {
      final Duration duration = widget.controller.value.duration;
      final Duration seekDuration = Duration(milliseconds: seekMillis);
      final Duration clampedSeekDuration = seekDuration < Duration.zero
          ? Duration.zero
          : (seekDuration > duration ? duration : seekDuration);
      _scrubbingSeekPosition = clampedSeekDuration;
    });
  }

  void _onHorizontalDragEnd(DragEndDetails details) {
    if (!_isScrubbing) return;

    widget.controller.seekTo(_scrubbingSeekPosition);
    setState(() => _isScrubbing = false);
    _startHideTimer();
  }

  void _onHorizontalDragCancel() {
    if (!_isScrubbing) return;
    setState(() => _isScrubbing = false);
    _startHideTimer();
  }

  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)}";
  }

  @override
  Widget build(BuildContext context) {
    return GestureDetector(
      behavior: HitTestBehavior.opaque,
      onTap: _toggleControlsVisibility,
      onHorizontalDragStart: _controlsVisible ? _onHorizontalDragStart : null,
      onHorizontalDragUpdate: _controlsVisible ? _onHorizontalDragUpdate : null,
      onHorizontalDragEnd: _controlsVisible ? _onHorizontalDragEnd : null,
      onHorizontalDragCancel: _controlsVisible ? _onHorizontalDragCancel : null,
      child: Stack(
        alignment: Alignment.center,
        children: [
          AnimatedContainer(
            duration: const Duration(milliseconds: 300),
            color: _controlsVisible && !_isScrubbing
                ? Colors.black.withValues(alpha: 0.5)
                : Colors.transparent,
          ),
          AnimatedOpacity(
            opacity: _isScrubbing ? 1.0 : 0.0,
            duration: const Duration(milliseconds: 200),
            child: _buildScrubbingIndicator(),
          ),
          AnimatedOpacity(
            opacity: _controlsVisible && !_isScrubbing ? 1.0 : 0.0,
            duration: const Duration(milliseconds: 300),
            child: Align(
              alignment: Alignment.bottomCenter,
              child: _buildBottomBar(),
            ),
          ),
        ],
      ),
    );
  }

  Widget _buildScrubbingIndicator() {
    final Duration positionChange =
        _scrubbingSeekPosition - _scrubbingStartPosition;
    final String changeSign = positionChange.isNegative ? '-' : '+';
    final String changeText = _formatDuration(positionChange.abs());

    return Container(
      padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8),
      decoration: BoxDecoration(
        color: Colors.black.withValues(alpha: 0.7),
        borderRadius: BorderRadius.circular(8),
      ),
      child: Column(
        mainAxisSize: MainAxisSize.min,
        children: [
          Text(
            _formatDuration(_scrubbingSeekPosition),
            style: const TextStyle(
              color: Colors.white,
              fontSize: 22,
              fontWeight: FontWeight.bold,
            ),
          ),
          Text(
            '[$changeSign$changeText]',
            style: TextStyle(
              color: Colors.white.withValues(alpha: 0.8),
              fontSize: 16,
            ),
          ),
        ],
      ),
    );
  }

  Widget _buildBottomBar() {
    return Padding(
      padding: const EdgeInsets.fromLTRB(16, 0, 16, 8),
      child: Row(
        children: [
          IconButton(
            icon: Icon(
              widget.controller.value.isPlaying
                  ? Icons.pause
                  : Icons.play_arrow,
              color: Theme.of(context).colorScheme.primary,
              size: 20,
            ),
            onPressed: _handlePlayPause,
            constraints: const BoxConstraints(),
            padding: EdgeInsets.zero,
          ),
          Text(
            _formatDuration(widget.controller.value.position),
            style: TextStyle(
              color: Theme.of(context).colorScheme.primary,
              fontSize: 12,
            ),
          ),
          Expanded(
            child: Padding(
              padding: const EdgeInsets.symmetric(horizontal: 12),
              child: VideoProgressIndicator(
                widget.controller,
                allowScrubbing: true,
                colors: VideoProgressColors(
                  playedColor: Theme.of(context).colorScheme.primary,
                  backgroundColor: Colors.white.withValues(alpha: 0.3),
                  bufferedColor: Colors.white.withValues(alpha: 0.6),
                ),
              ),
            ),
          ),
          Text(
            _formatDuration(widget.controller.value.duration),
            style: TextStyle(
              color: Theme.of(context).colorScheme.primary,
              fontSize: 12,
            ),
          ),
          const SizedBox(width: 8),
          Obx(
            () => IconButton(
              icon: Icon(
                _settingsController.muted.value
                    ? Icons.volume_off
                    : Icons.volume_up,
                color: Theme.of(context).colorScheme.primary,
                size: 20,
              ),
              onPressed: () {
                _settingsController.toggleMuted();
                _startHideTimer();
              },
              constraints: const BoxConstraints(),
              padding: EdgeInsets.zero,
            ),
          ),
        ],
      ),
    );
  }
}