enaklo-flutter/lib/presentation/pages/reward/widgets/ticket_card.dart

import 'package:flutter/material.dart';

import '../../../../common/theme/theme.dart';

/// Kartu berbentuk tiket: sobekan kiri ([stub]) dan isi kanan ([body]),
/// dipisah garis putus-putus.
class TicketCard extends StatelessWidget {
  const TicketCard({
    super.key,
    required this.stub,
    required this.body,
    required this.onTap,
    this.active = true,
  });

  final Widget stub;
  final Widget body;
  final VoidCallback onTap;

  /// Latar sobekan berwarna untuk voucher yang bisa ditukar / dipakai.
  final bool active;

  static const double stubWidth = 84;

  @override
  Widget build(BuildContext context) {
    return PhysicalShape(
      clipper: const _TicketClipper(notchX: stubWidth + 0.5),
      color: AppColor.white,
      elevation: 2,
      shadowColor: Colors.black.withOpacity(0.25),
      child: Material(
        type: MaterialType.transparency,
        child: InkWell(
          onTap: onTap,
          child: IntrinsicHeight(
            child: Row(
              crossAxisAlignment: CrossAxisAlignment.stretch,
              children: [
                Container(
                  width: stubWidth,
                  color: active
                      ? AppColor.primary.withOpacity(0.06)
                      : AppColor.background,
                  padding: const EdgeInsets.symmetric(
                    horizontal: 8,
                    vertical: 16,
                  ),
                  child: stub,
                ),
                const Padding(
                  padding: EdgeInsets.symmetric(vertical: 14),
                  child: CustomPaint(
                    size: Size(1, double.infinity),
                    painter: _VerticalDashPainter(),
                  ),
                ),
                Expanded(child: body),
              ],
            ),
          ),
        ),
      ),
    );
  }
}

/// Persegi panjang membulat dengan lekuk setengah lingkaran di atas dan
/// bawah pada posisi [notchX], tempat garis sobekan tiket.
class _TicketClipper extends CustomClipper<Path> {
  const _TicketClipper({required this.notchX});

  final double notchX;

  static const double _radius = 16;
  static const double _notchRadius = 8;

  @override
  Path getClip(Size size) {
    final card = Path()
      ..addRRect(
        RRect.fromRectAndRadius(
          Offset.zero & size,
          const Radius.circular(_radius),
        ),
      );
    final notches = Path()
      ..addOval(
        Rect.fromCircle(center: Offset(notchX, 0), radius: _notchRadius),
      )
      ..addOval(
        Rect.fromCircle(
          center: Offset(notchX, size.height),
          radius: _notchRadius,
        ),
      );
    return Path.combine(PathOperation.difference, card, notches);
  }

  @override
  bool shouldReclip(covariant _TicketClipper oldClipper) =>
      oldClipper.notchX != notchX;
}

class _VerticalDashPainter extends CustomPainter {
  const _VerticalDashPainter();

  static const double _dash = 5;
  static const double _gap = 4;

  @override
  void paint(Canvas canvas, Size size) {
    final paint = Paint()
      ..color = AppColor.border
      ..strokeWidth = size.width;
    final x = size.width / 2;

    for (double y = 0; y < size.height; y += _dash + _gap) {
      final end = (y + _dash).clamp(0, size.height).toDouble();
      canvas.drawLine(Offset(x, y), Offset(x, end), paint);
    }
  }

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

/// Isi sobekan: gambar voucher dan EnakPoint yang ditukar.
class TicketStub extends StatelessWidget {
  const TicketStub({
    super.key,
    required this.image,
    required this.pointCost,
    this.active = true,
  });

  final Widget image;
  final String pointCost;
  final bool active;

  @override
  Widget build(BuildContext context) {
    return Column(
      mainAxisAlignment: MainAxisAlignment.center,
      children: [
        image,
        const SizedBox(height: 8),
        FittedBox(
          fit: BoxFit.scaleDown,
          child: Text(
            pointCost,
            style: AppStyle.md.copyWith(
              color: active ? AppColor.primary : AppColor.textSecondary,
              fontWeight: FontWeight.w700,
            ),
          ),
        ),
        Text(
          'EnakPoint',
          style: AppStyle.xs.copyWith(
            fontSize: 10,
            color: AppColor.textSecondary,
          ),
        ),
      ],
    );
  }
}