Option 2 : Cookie Restore

function setMasterCookie() {
    $cookieName = '_aw_master_id';
    $cookieLifetime = time() + (60 * 60 * 24 * 30 * 13);
    $cookieDomain = getMainDomain($_SERVER['HTTP_HOST']);
 
    if (!isset($_COOKIE[$cookieName])) {
        $cookieValue = $this->generateUUID();
    } else {
        $cookieValue = $_COOKIE[$cookieName];
    }
    setcookie(
        $cookieName,
        $cookieValue,
        $cookieLifetime,
        '/',
        $cookieDomain,
        true,
        true
    );
}
 
function generateUUID() {
    return sprintf(
        '%04x%04x-%04x-%04x-%04x-%04x%04x%04x',
        mt_rand(0, 0xFFFF), mt_rand(0, 0xFFFF),
        mt_rand(0, 0xFFFF),
        mt_rand(0, 0x0FFF) | 0x4000,
        mt_rand(0, 0x3FFF) | 0x8000,
        mt_rand(0, 0xFFFF), mt_rand(0, 0xFFFF), mt_rand(0, 0xFFFF)
    );
}
 
function getMainDomain($url) {
    $composedTlds = [
        'co.uk', 'gov.uk', 'ac.uk', 'org.uk', 'net.uk', 'sch.uk', 'nhs.uk', 'police.uk',
        'com.au', 'net.au', 'org.au', 'edu.au', 'gov.au', 'asn.au', 'id.au',
        'co.jp', 'ac.jp', 'ne.jp', 'or.jp', 'go.jp', 'ed.jp', 'ad.jp', 'gr.jp',
        'com.cn', 'net.cn', 'gov.cn', 'org.cn', 'edu.cn', 'mil.cn', 'ac.cn',
        'com.br', 'net.br', 'org.br', 'gov.br', 'edu.br', 'mil.br', 'art.br', 'coop.br',
        'co.in', 'net.in', 'org.in', 'gov.in', 'ac.in', 'res.in', 'edu.in', 'mil.in', 'nic.in',
        'gc.ca', 'gov.ca',
        'com.de', 'net.de', 'org.de',
        'gov.it', 'edu.it',
        'asso.fr', 'nom.fr', 'prd.fr', 'presse.fr', 'tm.fr', 'com.fr', 'gouv.fr',
        'com.es', 'nom.es', 'org.es', 'gob.es', 'edu.es',
        'co.za', 'net.za', 'gov.za', 'org.za', 'edu.za',
        'com.mx', 'net.mx', 'org.mx', 'edu.mx', 'gob.mx',
        'com.ru', 'net.ru', 'org.ru', 'edu.ru', 'gov.ru',
        'co.kr', 'ne.kr', 'or.kr', 're.kr', 'pe.kr', 'go.kr', 'mil.kr',
        'com.sg', 'net.sg', 'org.sg', 'edu.sg', 'gov.sg', 'per.sg',
        'com.my', 'net.my', 'org.my', 'gov.my', 'edu.my', 'mil.my',
        'com.hk', 'net.hk', 'org.hk', 'gov.hk', 'edu.hk', 'idv.hk',
        'com.ar', 'net.ar', 'org.ar', 'gov.ar', 'edu.ar', 'int.ar',
        'com.tr', 'net.tr', 'org.tr', 'gov.tr', 'edu.tr', 'mil.tr',
    ];
 
    // Remove protocol if present
    $domain = preg_replace('/^https?:\/\//', '', $url);
    // Remove www. if present
    $domain = preg_replace('/^www\./', '', $domain);
    // Split the domain into parts
    $parts = explode('.', $domain);
 
    // Check against composed TLDs
    for ($i = 0; $i < count($parts) - 1; $i++) {
        $possibleTld = implode('.', array_slice($parts, $i));
        if (in_array($possibleTld, $composedTlds)) {
            $main_domain = implode('.', array_slice($parts, $i - 1));
            return $main_domain;
        }
    }
 
    // Default to last two parts if no composed TLD matches
    return implode('.', array_slice($parts, -2));
}
 
setMasterCookie();

const crypto = require('crypto');
const { URL } = require('url');
 
function setMasterCookie(req, res) {
    const cookieName = '_aw_master_id';
    const cookieLifetime = 60 * 60 * 24 * 30 * 13 * 1000; // Milliseconds
    const cookieDomain = getMainDomain(req.headers.host);
 
    let cookieValue;
 
    if (!req.cookies[cookieName]) {
        cookieValue = generateUUID();
    } else {
        cookieValue = req.cookies[cookieName];
    }
 
    const cookieOptions = {
        maxAge: cookieLifetime,
        domain: cookieDomain,
        path: '/',
        secure: true,
        httpOnly: true
    };
 
    res.cookie(
        cookieName,
        cookieValue,
        cookieOptions
    );
}
 
function generateUUID() {
    return crypto.randomUUID();
}
 
function getMainDomain(url) {
    const composedTlds = [
    'co.uk', 'gov.uk', 'ac.uk', 'org.uk', 'net.uk', 'sch.uk', 'nhs.uk', 'police.uk',
    'com.au', 'net.au', 'org.au', 'edu.au', 'gov.au', 'asn.au', 'id.au',
    'co.jp', 'ac.jp', 'ne.jp', 'or.jp', 'go.jp', 'ed.jp', 'ad.jp', 'gr.jp',
    'com.cn', 'net.cn', 'gov.cn', 'org.cn', 'edu.cn', 'mil.cn', 'ac.cn',
    'com.br', 'net.br', 'org.br', 'gov.br', 'edu.br', 'mil.br', 'art.br', 'coop.br',
    'co.in', 'net.in', 'org.in', 'gov.in', 'ac.in', 'res.in', 'edu.in', 'mil.in', 'nic.in',
    'gc.ca', 'gov.ca',
    'com.de', 'net.de', 'org.de',
    'gov.it', 'edu.it',
    'asso.fr', 'nom.fr', 'prd.fr', 'presse.fr', 'tm.fr', 'com.fr', 'gouv.fr',
    'com.es', 'nom.es', 'org.es', 'gob.es', 'edu.es',
    'co.za', 'net.za', 'gov.za', 'org.za', 'edu.za',
    'com.mx', 'net.mx', 'org.mx', 'edu.mx', 'gob.mx',
    'com.ru', 'net.ru', 'org.ru', 'edu.ru', 'gov.ru',
    'co.kr', 'ne.kr', 'or.kr', 're.kr', 'pe.kr', 'go.kr', 'mil.kr',
    'com.sg', 'net.sg', 'org.sg', 'edu.sg', 'gov.sg', 'per.sg',
    'com.my', 'net.my', 'org.my', 'gov.my', 'edu.my', 'mil.my',
    'com.hk', 'net.hk', 'org.hk', 'gov.hk', 'edu.hk', 'idv.hk',
    'com.ar', 'net.ar', 'org.ar', 'gov.ar', 'edu.ar', 'int.ar',
    'com.tr', 'net.tr', 'org.tr', 'gov.tr', 'edu.tr', 'mil.tr',
    ];
 
    // Remove protocol if present
    let domain = url.replace(/^https?:\/\//, '');
    // Remove www. if present
    domain = domain.replace(/^www\./, '');
    // Split the domain into parts
    const parts = domain.split('.');
 
    // Check against composed TLDs
    for (let i = 0; i < parts.length - 1; i++) {
        const possibleTld = parts.slice(i).join('.');
        if (composedTlds.includes(possibleTld)) {
            const mainDomain = parts.slice(i - 1).join('.');
            return mainDomain;
        }
    }
 
    // Default to last two parts if no composed TLD matches
    return parts.slice(-2).join('.');
}
 
// Example usage with Express.js
const express = require('express');
const cookieParser = require('cookie-parser');
 
const app = express();
app.use(cookieParser());
 
app.use((req, res, next) => {
    setMasterCookie(req, res);
    next();
});
 
app.get('/', (req, res) => {
    res.send('Cookie is set!');
});
 
app.listen(3000, () => {
    console.log('Server is running on port 3000');
});