import 'package:flutter/material.dart';
import 'dart:math';

class SectographWidget extends StatefulWidget {
  @override
  _SectographWidgetState createState() => _SectographWidgetState();
}

class _SectographWidgetState extends State<SectographWidget> with SingleTickerProviderStateMixin {
  late AnimationController _controller;
  DateTime _currentTime = DateTime.now();
  List<Task> tasks = [
    Task(name: "Work", startTime: DateTime.now().add(Duration(hours: 1)), duration: Duration(hours: 2), color: Colors.blue, icon: Icons.work, priority: 3),
    Task(name: "Gym", startTime: DateTime.now().add(Duration(hours: 4)), duration: Duration(hours: 1), color: Colors.red, icon: Icons.fitness_center, priority: 5),
    Task(name: "Lunch", startTime: DateTime.now().add(Duration(hours: 3)), duration: Duration(hours: 1), color: Colors.green, icon: Icons.restaurant, priority: 4),
  ];

  @override
  void initState() {
    super.initState();
    _controller = AnimationController(vsync: this, duration: Duration(seconds: 1))
      ..addListener(() => setState(() => _currentTime = DateTime.now()))
      ..repeat();
  }

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

  @override
  Widget build(BuildContext context) {
    return Stack(
      alignment: Alignment.center,
      children: [
        CustomPaint(
          size: Size(300, 300),
          painter: SectographPainter(_currentTime, tasks),
        ),
        Positioned(
          child: Column(
            mainAxisSize: MainAxisSize.min,
            children: [
              Text(
                "${_currentTime.hour}:${_currentTime.minute.toString().padLeft(2, '0')}",
                style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold, color: Colors.white),
              ),
              ElevatedButton(
                onPressed: () => setState(() => _currentTime = DateTime.now()),
                child: Text("Güncelle"),
              )
            ],
          ),
        )
      ],
    );
  }
}

class SectographPainter extends CustomPainter {
  final DateTime currentTime;
  final List<Task> tasks;

  SectographPainter(this.currentTime, this.tasks);

  @override
  void paint(Canvas canvas, Size size) {
    final center = Offset(size.width / 2, size.height / 2);
    final radius = min(size.width / 2, size.height / 2);
    final paint = Paint()..style = PaintingStyle.stroke..strokeWidth = 15;

    for (var task in tasks) {
      if (task.isVisible(currentTime)) {
        paint.color = task.color;
        double startAngle = _timeToAngle(task.startTime);
        double sweepAngle = _durationToAngle(task.duration);
        canvas.drawArc(Rect.fromCircle(center: center, radius: radius), startAngle, sweepAngle, false, paint);
      }
    }

    final linePaint = Paint()
      ..color = Colors.yellow
      ..strokeWidth = 3;
    double timeAngle = _timeToAngle(currentTime);
    final lineStart = center + Offset(cos(timeAngle) * (radius - 10), sin(timeAngle) * (radius - 10));
    final lineEnd = center + Offset(cos(timeAngle) * radius, sin(timeAngle) * radius);
    canvas.drawLine(lineStart, lineEnd, linePaint);
  }

  double _timeToAngle(DateTime time) {
    return (time.hour * 60 + time.minute) * pi / 720 - pi / 2;
  }

  double _durationToAngle(Duration duration) {
    return (duration.inMinutes) * pi / 720;
  }

  @override
  bool shouldRepaint(covariant CustomPainter oldDelegate) => true;
}

class Task {
  String name;
  DateTime startTime;
  Duration duration;
  Color color;
  IconData icon;
  int priority;

  Task({required this.name, required this.startTime, required this.duration, required this.color, required this.icon, required this.priority});

  bool isVisible(DateTime currentTime) {
    return startTime.day == currentTime.day;
  }
}