import { forwardRef, type ButtonHTMLAttributes } from 'react';
import { cn } from '@/lib/cn';

type Variant = 'primary' | 'secondary' | 'ghost' | 'danger';
type Size = 'sm' | 'md' | 'lg';

interface Props extends ButtonHTMLAttributes<HTMLButtonElement> {
  variant?: Variant;
  size?: Size;
}

const VARIANT: Record<Variant, string> = {
  primary: 'bg-brand-500 text-white hover:bg-brand-600 shadow-sm shadow-brand-500/25',
  secondary: 'bg-white text-ink-900 border border-ink-200 hover:border-ink-300',
  ghost: 'text-ink-700 hover:text-ink-900 hover:bg-ink-100',
  danger: 'bg-rose-500 text-white hover:bg-rose-600 shadow-sm shadow-rose-500/25',
};

const SIZE: Record<Size, string> = {
  sm: 'px-3 py-1.5 text-sm rounded-lg gap-1.5',
  md: 'px-4 py-2 text-sm rounded-xl gap-2',
  lg: 'px-5 py-2.5 text-sm rounded-xl gap-2',
};

export const Button = forwardRef<HTMLButtonElement, Props>(function Button(
  { variant = 'primary', size = 'md', className, ...rest },
  ref,
) {
  return (
    <button
      ref={ref}
      className={cn(
        'inline-flex items-center justify-center font-medium transition',
        'focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-brand-500 focus-visible:ring-offset-2',
        'disabled:pointer-events-none disabled:opacity-60',
        VARIANT[variant],
        SIZE[size],
        className,
      )}
      {...rest}
    />
  );
});