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

import { cn } from '@/lib/utils';
import { Slot } from '@/lib/slot';

// Spec source: Figma "APP Re-design Phase 1" → page "Button ✅"
// h=40, padding 16x, radius 9999 (pill), gap 8, fill #ec008c (--primary), text Inter 500 14px
const buttonVariants = cva(
  "inline-flex shrink-0 items-center justify-center gap-2 rounded-full text-sm font-medium whitespace-nowrap transition-all outline-none focus-visible:border-ring focus-visible:ring-[3px] 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 shadow-xs',
        destructive:
          'bg-destructive text-white hover:bg-destructive/90 focus-visible:ring-destructive/20 dark:bg-destructive/60 dark:focus-visible:ring-destructive/40 shadow-xs',
        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 shadow-xs',
        ghost: 'hover:bg-accent hover:text-accent-foreground dark:hover:bg-accent/50',
        link: 'text-primary underline-offset-4 hover:underline',
      },
      size: {
        default: 'h-10 px-4 has-[>svg]:px-3',
        xs: "h-7 gap-1 px-2.5 text-xs has-[>svg]:px-2 [&_svg:not([class*='size-'])]:size-3",
        sm: 'h-8 gap-1.5 px-3 has-[>svg]:px-2.5',
        lg: 'h-12 px-7 text-base has-[>svg]:px-5',
        icon: 'size-10',
        'icon-xs': "size-7 [&_svg:not([class*='size-'])]:size-3.5",
        'icon-sm': 'size-8',
        'icon-lg': 'size-12',
      },
    },
    defaultVariants: { variant: 'default', size: 'default' },
  },
);

function Button({
  className,
  variant = 'default',
  size = 'default',
  asChild = false,
  ...props
}: React.ComponentProps<'button'> &
  VariantProps<typeof buttonVariants> & { asChild?: boolean }) {
  const Comp = asChild ? Slot : 'button';
  return (
    <Comp
      data-slot="button"
      data-variant={variant}
      data-size={size}
      className={cn(buttonVariants({ variant, size, className }))}
      {...props}
    />
  );
}

export { Button, buttonVariants };