'use client';

import * as React from 'react';
import { cva, type VariantProps } from 'class-variance-authority';
import { Slot } from '@radix-ui/react-slot';
import { Loader2 } from 'lucide-react';
import { cn } from '@/lib/utils';

const buttonVariants = cva(
  'inline-flex items-center justify-center gap-2 font-medium transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-primary-200 focus-visible:ring-offset-1 disabled:pointer-events-none disabled:opacity-50',
  {
    variants: {
      variant: {
        primary:
          'bg-primary-600 text-white shadow-[0_1px_2px_0_rgb(0_0_0/0.05)] hover:bg-primary-700 active:bg-primary-800',
        secondary:
          'border border-neutral-300 bg-white text-neutral-900 shadow-[0_1px_2px_0_rgb(0_0_0/0.05)] hover:bg-neutral-50 active:bg-neutral-100',
        ghost:
          'text-neutral-700 hover:bg-neutral-100 hover:text-neutral-900 active:bg-neutral-200',
        danger:
          'bg-danger text-white shadow-[0_1px_2px_0_rgb(0_0_0/0.05)] hover:bg-[#b91c1c] active:bg-[#991b1b]',
        link:
          'text-primary-600 underline-offset-4 hover:underline p-0 h-auto',
      },
      size: {
        sm: 'h-8 rounded-md px-3 text-xs',
        md: 'h-10 rounded-md px-4 text-sm',
        lg: 'h-11 rounded-md px-5 text-sm',
        icon: 'h-9 w-9 rounded-md',
      },
    },
    defaultVariants: {
      variant: 'primary',
      size: 'md',
    },
  },
);

export type ButtonVariants = VariantProps<typeof buttonVariants>;

export interface ButtonProps
  extends React.ButtonHTMLAttributes<HTMLButtonElement>,
    ButtonVariants {
  asChild?: boolean;
  loading?: boolean;
}

export const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(
  ({ className, variant, size, asChild = false, loading = false, children, disabled, ...props }, ref) => {
    const Comp = asChild ? Slot : 'button';
    return (
      <Comp
        ref={ref}
        disabled={disabled || loading}
        className={cn(buttonVariants({ variant, size }), className)}
        {...props}
      >
        {asChild ? children : (
          <>
            {loading ? <Loader2 className="h-4 w-4 animate-spin" aria-hidden /> : null}
            {children}
          </>
        )}
      </Comp>
    );
  },
);

Button.displayName = 'Button';