import 'dart:math';
import 'package:business_panel/core/config/app_colors.dart';
import 'package:flutter/material.dart';


class OnboardingIndicatorPainter extends CustomPainter {
  final int pageCount;
  final int currentPage;
  final Color activeColor;
  final Color inactiveColor;
  final double strokeWidth;

  OnboardingIndicatorPainter({
    required this.pageCount,
    required this.currentPage,
    this.activeColor = AppColors.primary,
    this.inactiveColor = AppColors.unselected,
    this.strokeWidth = 6.0,
  });

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

    const double gapInDegrees = 30.0;
    const double gapInRadians = gapInDegrees * (pi / 180);

    const double arcAngle = (pi / 2) - gapInRadians;

    final startAngles = [-pi / 2, 0.0, pi / 2, pi];

    for (int i = 0; i < pageCount; i++) {
      final paint = Paint()
        ..color = (i == currentPage) ? activeColor : inactiveColor
        ..style = PaintingStyle.stroke
        ..strokeWidth = strokeWidth
        ..strokeCap = StrokeCap.round;

      final correctedStartAngle = startAngles[i] + (gapInRadians / 2);

      canvas.drawArc(
        Rect.fromCircle(center: center, radius: radius),
        correctedStartAngle,
        arcAngle,
        false,
        paint,
      );
    }
  }

  @override
  bool shouldRepaint(covariant CustomPainter oldDelegate) {
    return true;
  }
}