import { useEffect, useState } from "react";

const QUERY = "(prefers-reduced-motion: reduce)";

function getInitialValue(): boolean {
  if (typeof window === "undefined" || !window.matchMedia) return false;
  return window.matchMedia(QUERY).matches;
}

export function usePrefersReducedMotion(): boolean {
  const [reduced, setReduced] = useState<boolean>(getInitialValue);

  useEffect(() => {
    if (typeof window === "undefined" || !window.matchMedia) return;
    const media = window.matchMedia(QUERY);
    const handler = (event: MediaQueryListEvent) => setReduced(event.matches);
    setReduced(media.matches);
    media.addEventListener("change", handler);
    return () => media.removeEventListener("change", handler);
  }, []);

  return reduced;
}