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

const buttonVariants = cva(
  "inline-flex items-center justify-center gap-2 whitespace-nowrap rounded font-display font-semibold " +
    "transition-[background-color,box-shadow,transform,color] duration-base ease-out " +
    "focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring/60 focus-visible:ring-offset-2 focus-visible:ring-offset-bg " +
    "active:scale-[0.98] disabled:pointer-events-none disabled:opacity-50 [&_svg]:size-4 [&_svg]:shrink-0",
  {
    variants: {
      variant: {
        primary: "bg-brand text-brand-foreground hover:bg-brand-bright shadow-sm hover:shadow-glow",
        secondary: "bg-surface-2 text-text hover:bg-surface-2/70 shadow-sm",
        outline: "border border-border bg-transparent text-text hover:bg-surface-2/60",
        ghost: "bg-transparent text-text hover:bg-surface-2/60",
        danger: "bg-danger text-danger-foreground hover:bg-danger/90 shadow-sm",
        link: "text-brand underline-offset-4 hover:underline",
      },
      size: {
        sm: "h-8 px-3 text-sm",
        md: "h-10 px-4 text-sm",
        lg: "h-12 px-6 text-base",
        icon: "size-10",
      },
    },
    defaultVariants: { variant: "primary", size: "md" },
  }
);

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

export const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(
  ({ className, variant, size, asChild = false, ...props }, ref) => {
    const Comp = asChild ? Slot : "button";
    return <Comp ref={ref} className={cn(buttonVariants({ variant, size }), className)} {...props} />;
  }
);
Button.displayName = "Button";
export { buttonVariants };
