auth.js - Client Side - Tinder Clone

auth.js

window.addEventListener("DOMContentLoaded", function () {
  function shouldRedirectToHomePage(user, isLoginPage) {
    return user && isLoginPage;
  }

  function shouldRedirectToLoginPage(user, isLoginPage) {
    return !user && !isLoginPage;
  }

  const authenticatedUser = JSON.parse(localStorage.getItem("auth"));
  // check current page is the login page, or not.
  const isLoginPage = window.location.href.includes("login");
  if (shouldRedirectToHomePage(authenticatedUser, isLoginPage)) {
    window.location.href = "/";
  } else if (shouldRedirectToLoginPage(authenticatedUser, isLoginPage)) {
    window.location.href = "/login.html";
  }
});