Redirects user to loginVC if not currently logged in

AppDelegate.swift

/**
 * If any issues, be sure to import Firebase or FirebaseAuth and check your Podfile
 *
 */

func application(_ application: UIApplication, performActionFor shortcutItem: UIApplicationShortcutItem, completionHandler: @escaping (Bool) -> Void) {
  let storyboard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
  let root = UIApplication.shared.keyWindow?.rootViewController
  let lc: LoginVC = storyboard.instantiateViewController(withIdentifier: "loginVC") as! LoginVC
  
  // If the user is not logged in, redirect to loginViewController (loginVC)
  if (FIRAuth.auth()?.currentUser) != nil {
    // Do stuff if shortcutItem.type == "your shortcut"
  } else {
    // Passing the shortcutItem to the loginVC's variable
    lc.params = "\(shortcutItem.type)"
    root?.present(lc, animated: false, completion: { () -> Void in
                                                    completionHandler(true)
                                                   })
  }
}