import 'package:flutter/material.dart';
import '../../../../core/theme/app_theme.dart';
import '../../../../core/theme/app_theme_extension.dart';
import '../../../../core/theme/app_spacing.dart';
import '../../../components/glass_panel.dart';

/// 餘額卡片 — 顯示單個賬戶的 USDT 餘額
class BalanceCard extends StatelessWidget {
  final String label;
  final String balance;

  const BalanceCard({
    super.key,
    required this.label,
    required this.balance,
  });

  @override
  Widget build(BuildContext context) {
    final displayBalance = balance;

    return SizedBox(
      width: double.infinity, // 確保卡片撐滿寬度
      child: GlassPanel(
        padding: const EdgeInsets.all(20),
        borderRadius: BorderRadius.circular(AppRadius.lg),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Text(
              label,
              style: AppTextStyles.bodyMedium(context).copyWith(
                color: context.colors.onSurfaceVariant,
                fontWeight: FontWeight.w400,
              ),
            ),
            const SizedBox(height: 12),
            FittedBox(
              fit: BoxFit.scaleDown,
              alignment: Alignment.centerLeft,
              child: Text(
                _formatBalance(displayBalance),
                style: AppTextStyles.numberLarge(context),
              ),
            ),
            const SizedBox(height: 8),
            FittedBox(
              fit: BoxFit.scaleDown,
              alignment: Alignment.centerLeft,
              child: Text(
                '\u2248 \$${_formatBalance(displayBalance)} USD',
                style: AppTextStyles.bodyMedium(context).copyWith(
                  color: context.appColors.onSurfaceMuted,
                  fontWeight: FontWeight.w400,
                ),
              ),
            ),
          ],
        ),
      ),
    );
  }

  String _formatBalance(String balance) {
    final d = double.tryParse(balance) ?? 0;
    return d.toStringAsFixed(2).replaceAllMapped(
      RegExp(r'\B(?=(\d{3})+(?!\d))'),
      (Match m) => ',',
    );
  }
}