import { cva, type VariantProps } from 'class-variance-authority'
import { Slot } from 'radix-ui'
import * as React from 'react'

import { cn } from '../lib/utils'

/*
 * Button — copied verbatim from apps/desktop/src/components/ui/button.tsx.
 *
 * We import the desktop's local shadcn-style Button rather than
 * @nous-research/ui's <Button>, because the DS Button uses bg-midground /
 * text-background-base utilities that resolve to the DS's hardcoded
 * gold/brown brand defaults (#ffac02 / #170d02) unless overridden in
 * runtime. The desktop never sets those vars; it routes through its
 * own --dt-* token chain via shadcn classes like bg-primary. We do
 * the same so visuals match exactly.
 */

const buttonVariants = cva(
  "inline-flex shrink-0 items-center justify-center gap-2 rounded-md text-sm font-medium whitespace-nowrap transition-all outline-none focus-visible:border-ring focus-visible:ring-[0.1875rem] focus-visible:ring-ring/50 disabled:pointer-events-none disabled:opacity-50 aria-invalid:border-destructive aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-4",
  {
    variants: {
      variant: {
        default: 'bg-primary text-primary-foreground hover:bg-primary/90',
        destructive:
          'bg-destructive text-white hover:bg-destructive/90 focus-visible:ring-destructive/20 dark:bg-destructive/60 dark:focus-visible:ring-destructive/40',
        outline:
          'border bg-background shadow-xs hover:bg-accent hover:text-accent-foreground dark:border-input dark:bg-input/30 dark:hover:bg-input/50',
        secondary:
          'bg-secondary text-secondary-foreground hover:bg-secondary/80',
        ghost:
          'hover:bg-accent hover:text-accent-foreground dark:hover:bg-accent/50',
        link: 'text-primary underline-offset-4 decoration-current/20 hover:underline'
      },
      size: {
        default: 'h-9 px-4 py-2 has-[>svg]:px-3',
        xs: "h-6 gap-1 rounded-md px-2 text-xs has-[>svg]:px-1.5 [&_svg:not([class*='size-'])]:size-3",
        sm: 'h-8 gap-1.5 rounded-md px-3 has-[>svg]:px-2.5',
        lg: 'h-10 rounded-md px-6 has-[>svg]:px-4',
        icon: 'size-9',
        'icon-xs':
          "size-6 rounded-md [&_svg:not([class*='size-'])]:size-3",
        'icon-sm': 'size-8',
        'icon-lg': 'size-10'
      }
    },
    defaultVariants: {
      variant: 'default',
      size: 'default'
    }
  }
)

interface ButtonProps
  extends React.ComponentProps<'button'>,
    VariantProps<typeof buttonVariants> {
  asChild?: boolean
}

export function Button({
  className,
  variant = 'default',
  size = 'default',
  asChild = false,
  ...props
}: ButtonProps) {
  const Comp = asChild ? Slot.Root : 'button'

  return (
    <Comp
      className={cn(buttonVariants({ variant, size }), className)}
      data-size={size}
      data-slot="button"
      data-variant={variant}
      {...props}
    />
  )
}

export { buttonVariants }
