import * as React from 'react';
import { Slot, Slottable } from '@radix-ui/react-slot';
import { cva, type VariantProps } from 'class-variance-authority';

import { cn } from '../../shared/utils';

const badgeVariants = cva(
  'inline-flex items-center justify-center rounded-md border px-2 py-0.5 text-xs font-medium w-fit break-words shrink-0 [&>svg]:size-3 gap-1 [&>svg]:pointer-events-none focus-visible:border-ring focus-visible:ring-ring/50 focus-visible:ring-[3px] aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive transition-[color,box-shadow] overflow-hidden',
  {
    variants: {
      variant: {
        default: 'border-transparent bg-primary text-primary-foreground [a&]:hover:bg-primary/90',
        secondary:
          'border-transparent bg-secondary text-secondary-foreground [a&]:hover:bg-secondary/90',
        destructive:
          'border-transparent bg-destructive text-white [a&]:hover:bg-destructive/90 focus-visible:ring-destructive/20 dark:focus-visible:ring-destructive/40 dark:bg-destructive/60',
        outline: 'text-foreground [a&]:hover:bg-accent [a&]:hover:text-accent-foreground',
        success: 'border-transparent bg-success text-success-foreground',
        warning: 'border-transparent bg-warning text-warning-foreground',
        info: 'border-transparent bg-info text-info-foreground',
      },
    },
    defaultVariants: {
      variant: 'default',
    },
  }
);

/**
 * Informational status label for tables, lists, and counts.
 *
 * @description
 * A small inline label used for tagging entities with semantic status,
 * categories, or counters. Not interactive by default.
 *
 * @ai-rules
 * 1. Use the built-in `variant` prop for color — do NOT force colors via `className`.
 * 2. In dense lists, `variant="outline"` reduces visual weight.
 * 3. Available variants: `default`, `secondary`, `destructive`, `outline`, `success`, `warning`, `info`.
 * 4. For overlay dot/count badges on icons or avatars, use `<NotificationBadge>` instead.
 */
export function Badge({
  className,
  variant,
  asChild = false,
  children,
  ...props
}: React.ComponentProps<'span'> & VariantProps<typeof badgeVariants> & { asChild?: boolean }) {
  const Comp = asChild ? Slot : 'span';

  return (
    <Comp data-slot="badge" className={cn(badgeVariants({ variant }), className)} {...props}>
      <Slottable>{children}</Slottable>
    </Comp>
  );
}

export { badgeVariants };
