Check for server cookie

isAdmin.js

// Setting cookie for logged in admin
// run npm install cookie then:
// petadoption is the name of the cookie for this example

const cookie = require('cookie');

function isAdmin(event) {
  const incomingCookie = cookie.parse(event.headers.cookie || '');
  if (incomingCookie?.petadoption == 'apsodifugyhtjrkelwqzmxncbv0918273645') {
    return true;
  }
  return false;
}

module.exports = isAdmin;

// then require and check if(isAdmin(event)) is any admin file