import * as React from 'react';
import { Slot } from '@radix-ui/react-slot';
import { cva } from 'class-variance-authority';
import { cn } from '@/lib/utils';

const buttonVariants = cva(
  'inline-flex cursor-pointer items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium outline-none transition-all focus-visible:ring-[3px] focus-visible:ring-ring/50 disabled:pointer-events-none disabled:cursor-not-allowed disabled:opacity-50 [&_svg]:pointer-events-none [&_svg]:size-4 [&_svg]:shrink-0',
  {
    variants: {
      variant: {
        default:     'bg-primary text-primary-foreground shadow-sm hover:bg-primary/90 hover:shadow-md active:scale-[0.99]',
        destructive: 'bg-destructive text-destructive-foreground shadow-sm hover:bg-destructive/90 hover:shadow-md active:scale-[0.99]',
        outline:     'border border-input bg-background shadow-sm hover:bg-accent hover:text-accent-foreground hover:shadow',
        secondary:   'bg-secondary text-secondary-foreground shadow-sm hover:bg-secondary/90 hover:shadow',
        ghost:       'hover:bg-accent hover:text-accent-foreground active:bg-accent/80',
        link:        'text-primary underline-offset-4 hover:underline',
      },
      size: {
        default: 'h-9 px-4 py-2',
        sm:      'h-8 rounded-md px-3 text-xs',
        lg:      'h-10 rounded-md px-8',
        icon:    'h-9 w-9',
      },
    },
    defaultVariants: {
      variant: 'default',
      size:    'default',
    },
  }
);

const Button = React.forwardRef(({ className, variant, size, asChild = false, ...props }, ref) => {
  const Comp = asChild ? Slot : 'button';
  return (
    <Comp
      className={cn(buttonVariants({ variant, size, className }))}
      ref={ref}
      {...props}
    />
  );
});
Button.displayName = 'Button';

export { Button, buttonVariants };