import 'package:flutter/material.dart';

class WaveBackground extends StatelessWidget {
  final Color color;
  final double heightFactor;

  const WaveBackground({
    super.key,
    required this.color,
    this.heightFactor = 0.2, 
  });

  @override
  Widget build(BuildContext context) {
    return CustomPaint(
      painter: _WavePainter(color, heightFactor),
      size: Size.infinite,
    );
  }
}

class _WavePainter extends CustomPainter {
  final Color color;
  final double heightFactor;

  _WavePainter(this.color, this.heightFactor);

  @override
  void paint(Canvas canvas, Size size) {
    final paint1 = Paint()
      ..shader = LinearGradient(
        colors: [
          const Color(0xFF49BF3C), 
          const Color(0xFF81C784), 
        ],
        begin: Alignment.topLeft,
        end: Alignment.bottomRight,
      ).createShader(Rect.fromLTWH(0, 0, size.width, size.height));

    final path1 = Path()
      ..moveTo(0, size.height * heightFactor)
      ..quadraticBezierTo(
          size.width * 0.25, size.height * 0.05, size.width * 0.5, size.height * 0.15)
      ..quadraticBezierTo(
          size.width * 0.75, size.height * 0.25, size.width, size.height * 0.1)
      ..lineTo(size.width, 0)
      ..lineTo(0, 0)
      ..close();

    canvas.drawPath(path1, paint1);

    // Secondary wave (overlay) with same green but lighter opacity
    final paint2 = Paint()..color = const Color(0xFF49BF3C).withOpacity(0.15);
    final path2 = Path()
      ..moveTo(0, size.height * (heightFactor + 0.05))
      ..quadraticBezierTo(size.width * 0.4, size.height * 0.1, size.width, size.height * 0.2)
      ..lineTo(size.width, 0)
      ..lineTo(0, 0)
      ..close();

    canvas.drawPath(path2, paint2);
  }

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