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

import '../../../core/theme/halo_tokens.dart';

/// Slugs we ship SVGs for. Keep this in sync with `assets/payment_icons/`.
/// When a brand mark is added to the bundle (drop the SVG into the asset
/// dir), add its slug here. Anything not in this set renders the placeholder.
///
/// Source: idn-finlogos (github.com/hafidznoor/idn-finlogos) — see
/// `assets/payment_icons/NOTICE_IDN_FINLOGOS.txt` for licensing terms.
const Set<String> _kBundledSlugs = {
  'qris',
  'ovo',
  'dana',
  'shopeepay',
  'gopay',
  'bca',
  'mandiri',
  'bni',
  'bri',
  'permata',
};

/// Renders a payment-method brand mark by slug (`payment_methods.icon`).
/// Falls back to a generic credit-card placeholder when the slug isn't
/// bundled. Slugs are kept lower-case by convention.
class PaymentIcon extends StatelessWidget {
  final String? slug;
  final double size;
  final Color color;

  const PaymentIcon({
    super.key,
    required this.slug,
    this.size = 24,
    this.color = HaloTokens.brandDark,
  });

  @override
  Widget build(BuildContext context) {
    final isBundled = slug != null && _kBundledSlugs.contains(slug);
    final asset = isBundled
        ? 'assets/payment_icons/$slug.svg'
        : 'assets/payment_icons/placeholder.svg';

    // Brand SVGs ship with their canonical colors and must NOT be tinted;
    // the placeholder is mono-color and DOES want the brand-dark tint.
    return SvgPicture.asset(
      asset,
      width: size,
      height: size,
      colorFilter: isBundled ? null : ColorFilter.mode(color, BlendMode.srcIn),
    );
  }
}