import Link from "next/link";
import clsx from "clsx";

function ArrowIcon(props: React.ComponentPropsWithoutRef<"svg">) {
  return (
    <svg viewBox="0 0 20 20" fill="none" aria-hidden="true" {...props}>
      <path
        stroke="currentColor"
        strokeLinecap="round"
        strokeLinejoin="round"
        d="m11.5 6.5 3 3.5m0 0-3 3.5m3-3.5h-9"
      />
    </svg>
  );
}

const variantStyles = {
  primary:
    "rounded-full bg-zinc-900 py-1 px-3 text-white hover:bg-zinc-700 dark:bg-teal-400/10 dark:text-teal-400 dark:ring-1 dark:ring-inset dark:ring-teal-400/20 dark:hover:bg-teal-400/10 dark:hover:text-teal-300 dark:hover:ring-teal-300",
  secondary:
    "rounded-full bg-zinc-100 py-1 px-3 text-zinc-900 hover:bg-zinc-200 dark:bg-zinc-800/40 dark:text-zinc-400 dark:ring-1 dark:ring-inset dark:ring-zinc-800 dark:hover:bg-zinc-800 dark:hover:text-zinc-300",
  filled:
    "rounded-full bg-zinc-900 py-1 px-3 text-white hover:bg-zinc-700 dark:bg-teal-500 dark:text-white dark:hover:bg-teal-400",
  outline:
    "rounded-full py-1 px-3 text-zinc-700 ring-1 ring-inset ring-zinc-900/10 hover:bg-zinc-900/2.5 hover:text-zinc-900 dark:text-zinc-400 dark:ring-white/10 dark:hover:bg-white/5 dark:hover:text-white",
  text: "text-teal-500 hover:text-teal-700 dark:text-teal-400 dark:hover:text-teal-600",
};

type ButtonProps = {
  variant?: keyof typeof variantStyles;
  arrow?: "left" | "right";
} & (
  | React.ComponentPropsWithoutRef<typeof Link>
  | (React.ComponentPropsWithoutRef<"button"> & { href?: undefined })
);

export function Button({ variant = "primary", className, children, arrow, ...props }: ButtonProps) {
  className = clsx(
    "inline-flex gap-0.5 justify-center overflow-hidden text-sm font-medium transition",
    variantStyles[variant],
    className
  );

  let arrowIcon = (
    <ArrowIcon
      className={clsx(
        "mt-0.5 h-5 w-5",
        variant === "text" && "relative top-px",
        arrow === "left" && "-ml-1 rotate-180",
        arrow === "right" && "-mr-1"
      )}
    />
  );

  let inner = (
    <>
      {arrow === "left" && arrowIcon}
      {children}
      {arrow === "right" && arrowIcon}
    </>
  );

  if (typeof props.href === "undefined") {
    return (
      <button className={className} {...props}>
        {inner}
      </button>
    );
  }

  return (
    <Link className={className} {...props}>
      {inner}
    </Link>
  );
}