Horizon Theme Toggle

import { type ButtonHTMLAttributes, type CSSProperties, useId } from "react";

export interface HorizonProps extends Omit<
  ButtonHTMLAttributes<HTMLButtonElement>,
  "children"
> {
  duration?: number;
  /** Whether the toggle should render in its dark-theme state. */
  toggled?: boolean;
  [key: `data-${string}`]: string | number | boolean | null | undefined;
}

export function Horizon({
  duration = 500,
  toggled,
  className,
  type = "button",
  title = "Toggle theme",
  "aria-label": ariaLabel = "Toggle theme",
  "aria-pressed": ariaPressed,
  ...props
}: HorizonProps) {
  const toggleId = useId();

  const clipMainId = `toggles.dev-horizon-main-${toggleId}`;

  return (
    <button
      {...props}
      type={type}
      title={title}
      aria-label={ariaLabel}
      aria-pressed={toggled ?? ariaPressed}
      className={[
        className,
        toggled === true ? "dark" : toggled === false ? "light" : undefined,
      ]
        .filter(Boolean)
        .join(" ")}
    >
      <svg
        width="1em"
        height="1em"
        viewBox="0 0 32 32"
        aria-hidden="true"
        fill={"currentColor"}
        style={
          { "--toggles-horizon--duration": `${duration}ms` } as CSSProperties
        }
      >
        <defs>
          <clipPath id={clipMainId}>
            <path d={"M0 0h32v29h-32z"} />
          </clipPath>
        </defs>
        <path
          d={
            "M30.7 29.9H1.3c-.7 0-1.3.5-1.3 1.1 0 .6.6 1 1.3 1h29.3c.7 0 1.3-.5 1.3-1.1.1-.5-.5-1-1.2-1z"
          }
        />
        <g clipPath={`url(#${clipMainId})`}>
          <path
            d={
              "M16 8.8c-3.4 0-6.1 2.8-6.1 6.1s2.7 6.3 6.1 6.3 6.1-2.8 6.1-6.1-2.7-6.3-6.1-6.3zm13.3 11L26 15l3.3-4.8c.3-.5.1-1.1-.5-1.2l-5.7-1-1-5.7c-.1-.6-.8-.8-1.2-.5L16 5.1l-4.8-3.3c-.5-.4-1.2-.1-1.3.4L8.9 8 3.2 9c-.6.1-.8.8-.5 1.2L6 15l-3.3 4.8c-.3.5-.1 1.1.5 1.2l5.7 1 1 5.7c.1.6.8.8 1.2.5L16 25l4.8 3.3c.5.3 1.1.1 1.2-.5l1-5.7 5.7-1c.7-.1.9-.8.6-1.3zM16 22.5A7.6 7.6 0 0 1 8.3 15c0-4.2 3.5-7.5 7.7-7.5s7.7 3.4 7.7 7.5c0 4.2-3.4 7.5-7.7 7.5z"
            }
            className="motion-safe:transition-transform motion-safe:duration-(--toggles-horizon--duration) motion-safe:[transition-timing-function:cubic-bezier(0,0,0.15,1)] dark:translate-y-[50%]"
          />
        </g>
      </svg>
    </button>
  );
}