tududi/frontend/components/Shared/DarkModeToggle.tsx

import { MoonIcon, SunIcon } from "@heroicons/react/24/solid";
import React, { useEffect, useState } from "react";

const DarkModeToggle: React.FC = () => {
  const [darkMode, setDarkMode] = useState<boolean>(() => {
    return localStorage.getItem("darkMode") === "true";
  });

  useEffect(() => {
    document.body.classList.toggle("dark-mode", darkMode);
    localStorage.setItem("darkMode", darkMode.toString());
  }, [darkMode]);

  return (
    <button onClick={() => setDarkMode(!darkMode)}>
      {darkMode ? (
        <SunIcon className="h-6 w-6" />
      ) : (
        <MoonIcon className="h-6 w-6" />
      )}
    </button>
  );
};

export default DarkModeToggle;