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

const buttonVariants = cva(
  'inline-flex items-center justify-center whitespace-nowrap rounded-lg text-sm font-medium transition-all duration-200 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-brand-500 focus-visible:ring-offset-2 disabled:pointer-events-none disabled:opacity-50 active:scale-[0.97]',
  {
    variants: {
      variant: {
        default: 'bg-brand-600 text-white shadow-sm hover:bg-brand-700 dark:bg-brand-500 dark:hover:bg-brand-600',
        destructive: 'bg-red-500 text-white shadow-sm hover:bg-red-600 dark:bg-red-600 dark:hover:bg-red-700',
        outline: 'border border-gray-200 bg-white text-gray-700 hover:bg-gray-50 hover:text-gray-900 dark:border-gray-700 dark:bg-gray-800 dark:text-gray-300 dark:hover:bg-gray-700 dark:hover:text-white',
        secondary: 'bg-gray-100 text-gray-900 hover:bg-gray-200 dark:bg-gray-700 dark:text-gray-100 dark:hover:bg-gray-600',
        ghost: 'text-gray-600 hover:bg-gray-100 hover:text-gray-900 dark:text-gray-400 dark:hover:bg-gray-800 dark:hover:text-white',
        link: 'text-brand-600 underline-offset-4 hover:underline dark:text-brand-400',
      },
      size: {
        default: 'h-10 px-4 py-2',
        sm: 'h-9 rounded-md px-3 text-xs',
        lg: 'h-11 rounded-lg px-8 text-base',
        icon: 'h-10 w-10',
      },
    },
    defaultVariants: {
      variant: 'default',
      size: 'default',
    },
  },
)

export interface ButtonProps extends React.ButtonHTMLAttributes<HTMLButtonElement>, VariantProps<typeof buttonVariants> {
  asChild?: boolean
}

const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(
  ({ 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 }
