export const isAuthenticated = (): boolean => {
  return typeof window !== 'undefined' && !!sessionStorage.getItem('authToken');
};

export const getUserRole = (): string | null => {
  return typeof window !== 'undefined' ? sessionStorage.getItem('userRole') : null;
};

export const getUserName = (): string | null => {
  return typeof window !== 'undefined' ? sessionStorage.getItem('userName') : null;
};

export const logout = () => {
  if (typeof window !== 'undefined') {
    sessionStorage.removeItem('authToken');
    sessionStorage.removeItem('userRole');
    sessionStorage.removeItem('userName');
  }
};