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-md text-sm font-medium ring-offset-background transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:pointer-events-none disabled:opacity-50',
  {
    variants: {
      variant: {
        default: 'bg-primary text-primary-foreground hover:bg-primary/90',
        destructive:
          'bg-destructive text-destructive-foreground hover:bg-destructive/90',
        outline:
          'border border-input bg-background hover:bg-accent hover:text-accent-foreground',
        secondary:
          'bg-secondary text-secondary-foreground hover:bg-secondary/80',
        ghost: 'hover:bg-accent hover:text-accent-foreground',
        link: 'text-primary underline-offset-4 hover:underline',
      },
      size: {
        default: 'h-10 px-4 py-2',
        sm: 'h-9 rounded-md px-3',
        lg: 'h-11 rounded-md px-8',
        icon: 'h-10 w-10',
      },
    },
    defaultVariants: {
      variant: 'default',
      size: 'default',
    },
  }
)

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

const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(
  ({ className, isLoading, variant, size, asChild = false, ...props }, ref) => {
    const Comp = asChild ? Slot : 'button'
    const isLoadingClass = isLoading ? '' : ''

    return (
      <Comp
        className={cn(
          buttonVariants({ variant, size, className }),
          isLoadingClass
        )}
        ref={ref}
        disabled={isLoading}
        {...props}
      >
        {isLoading && (
          <span className="mr-2">
            <svg
              className="animate-spin h-5 w-5 text-white"
              xmlns="http://www.w3.org/2000/svg"
              fill="none"
              viewBox="0 0 24 24"
            >
              <circle
                className="opacity-25"
                cx="12"
                cy="12"
                r="10"
                stroke="currentColor"
                strokeWidth="4"
              ></circle>
              <path
                className="opacity-75"
                fill="currentColor"
                d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.416A7.963 7.963 0 014 12H0c0 6.627 5.373 12 12 12v-4a7.963 7.963 0 01-6 2.416z"
              ></path>
            </svg>
          </span>
        )}
        {props.children}
      </Comp>
    )
  }
)
Button.displayName = 'Button'

export { Button, buttonVariants }