import React from 'react';
import { Stack } from '@/ui/Stack';
import { Text } from '@/ui/Text';
import { Icon } from '@/ui/Icon';
import { LucideIcon } from 'lucide-react';
import { Grid } from '@/ui/Grid';

interface BillingStatProps {
  label: string;
  value: string | number;
  subValue?: string;
  icon: LucideIcon;
  variant?: 'default' | 'success' | 'warning' | 'danger' | 'info';
}

function BillingStat({ label, value, subValue, icon, variant = 'default' }: BillingStatProps) {
  const colorMap = {
    default: 'text-white',
    success: 'text-performance-green',
    warning: 'text-warning-amber',
    danger: 'text-racing-red',
    info: 'text-primary-blue',
  };

  const bgMap = {
    default: 'bg-iron-gray/50',
    success: 'bg-performance-green/10',
    warning: 'bg-warning-amber/10',
    danger: 'bg-racing-red/10',
    info: 'bg-primary-blue/10',
  };

  return (
    <Stack p={4} bg="bg-iron-gray/20" rounded="lg" border borderColor="border-charcoal-outline/50">
      <Stack direction="row" align="center" gap={3} mb={2}>
        <Stack p={2} rounded="md" bg={bgMap[variant]}>
          <Icon icon={icon} size={4} color={colorMap[variant] as any} />
        </Stack>
        <Text size="xs" weight="medium" color="text-gray-500" uppercase letterSpacing="wider">
          {label}
        </Text>
      </Stack>
      <Stack>
        <Text size="xl" weight="bold" color={colorMap[variant] as any}>
          {value}
        </Text>
        {subValue && (
          <Text size="xs" color="text-gray-500" block mt={0.5}>
            {subValue}
          </Text>
        )}
      </Stack>
    </Stack>
  );
}

interface BillingSummaryPanelProps {
  stats: BillingStatProps[];
}

/**
 * BillingSummaryPanel
 * 
 * A semantic panel for displaying billing metrics.
 * Dense, grid-based layout for financial data.
 */
export function BillingSummaryPanel({ stats }: BillingSummaryPanelProps) {
  return (
    <Grid cols={1} mdCols={2} lgCols={4} gap={4} mb={8}>
      {stats.map((stat, index) => (
        <BillingStat key={index} {...stat} />
      ))}
    </Grid>
  );
}
