import 'package:flutter/material.dart';

import '../theme/lawheatmap_tokens.dart';

/// Surface container — visual equivalent of fai_chain_studio's
/// `ChainCard`, retuned to the fai_web palette.
class LawHeatmapCard extends StatelessWidget {
  const LawHeatmapCard({
    super.key,
    required this.child,
    this.padding =
        const EdgeInsets.all(LawHeatmapSpace.lg),
    this.accent = false,
    this.expand = false,
  });

  final Widget child;
  final EdgeInsetsGeometry padding;

  /// If true, draws a thin petrol accent bar at the top —
  /// used for "this card carries a primary action".
  final bool accent;

  /// If true, the card grows to fill its parent's bounded
  /// dimensions and forces the child to expand. Use when the
  /// card is placed inside an `Expanded` widget and the child
  /// is itself a free-sizing widget (e.g. CustomPaint).
  final bool expand;

  @override
  Widget build(BuildContext context) {
    final padded = Padding(padding: padding, child: child);
    return Card(
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.stretch,
        mainAxisSize: expand ? MainAxisSize.max : MainAxisSize.min,
        children: [
          if (accent)
            Container(
              height: 2,
              decoration: const BoxDecoration(
                color: LawHeatmapColors.signal,
                borderRadius: BorderRadius.vertical(
                  top: LawHeatmapRadius.md,
                ),
              ),
            ),
          if (expand) Expanded(child: padded) else padded,
        ],
      ),
    );
  }
}