web/src/components/ui/button.tsx

import * as React from 'react'
import {merge} from '@/lib/utils'
import {cva} from 'class-variance-authority'

type ButtonProps = React.ComponentProps<'button'> & {
  variant?: 'default' | 'outline' | 'gradient' | 'danger' | 'accent'
}

function Button(rawProps: ButtonProps) {
  const {className, variant, ...props} = rawProps

  return (
    <button
      className={merge(
        `transition-all duration-200 ease-in-out`,
        `h-10 px-4 rounded-md cursor-pointer`,
        'whitespace-nowrap',
        'inline-flex items-center justify-center gap-2',
        'disabled:pointer-events-none disabled:opacity-50 ',
        '[&_svg]:pointer-events-none [&_svg:not([class*=\'size-\'])]:size-4 shrink-0 [&_svg]:shrink-0 ',
        'outline-none focus-visible:ring-4 ring-blue-200',
        'aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive',
        {
          gradient: 'bg-gradient-to-r from-blue-400 to-cyan-300 text-white ring-offset-2',
          default: 'bg-primary text-primary-foreground hover:bg-primary/90',
          accent: 'bg-accent text-accent-foreground hover:bg-accent/90',
          danger: 'bg-destructive text-white hover:bg-destructive/90',
          outline: 'border bg-background hover:bg-secondary hover:text-secondary-foreground dark:bg-input/30 dark:border-input dark:hover:bg-input/50',
        }[variant ?? 'default'],
        className,
      )}
      {...props}
    />
  )
}

const buttonVariants = cva(
  "inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium transition-colors focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring disabled:pointer-events-none disabled:opacity-50 [&_svg]:pointer-events-none [&_svg]:size-4 [&_svg]:shrink-0",
  {
    variants: {
      variant: {
        default:
          "bg-primary text-primary-foreground shadow hover:bg-primary/90",
        destructive:
          "bg-destructive text-destructive-foreground shadow-sm hover:bg-destructive/90",
        outline:
          "border border-input bg-background shadow-sm hover:bg-secondary hover:text-secondary-foreground",
        secondary:
          "bg-secondary text-secondary-foreground shadow-sm hover:bg-secondary/80",
        ghost: "hover:bg-secondary hover:text-secondary-foreground",
        link: "text-primary underline-offset-4 hover:underline",
      },
      size: {
        default: "h-9 px-4 py-2",
        sm: "h-8 rounded-md px-3 text-xs",
        lg: "h-10 rounded-md px-8",
        icon: "h-9 w-9",
      },
    },
    defaultVariants: {
      variant: "default",
      size: "default",
    },
  }
)

export {Button, buttonVariants}