Yiannistaos/cookies-policy-notification-bar-joomla-plugin-google-consent-mode.php

## cookies-policy-notification-bar-joomla-plugin-google-consent-mode.php
<?php
/**
 * BEGIN: Check if Cookies are accepted from the User (Compatible with Cookies Policy Notification Bar - Joomla! plugin by Web357.com)
 * GOOGLE CONSENT MODE
 * https://developers.google.com/tag-platform/devguides/consent
 */
$cookies_accepted = 0;

// get cookies from the browser
$jcookies = JFactory::getApplication()->input->cookie->getArray(); // $_COOKIE

// get plugin's parameters
jimport('joomla.plugin.helper');
$cookiespolicynotificationbar = JPluginHelper::getPlugin('system', 'cookiespolicynotificationbar');
$cpnb_params = new JRegistry($cookiespolicynotificationbar->params);
$cpnb_cookie_name = $cpnb_params->get('cookie_name', 'cookiesDirective');

// Block cookies from specific categories
if (isset($jcookies['cpnb_cookiesSettings']))
{
    $cpnb_specific_cookie_category_name_to_be_blocked = 'analytical-cookies'; // Note that you can replace the category ID (analytical-cookies) with another one. The category id should be same with that one you have created in the plugin settings.
    $cpnb_cookiesSettings = $jcookies['cpnb_cookiesSettings'];
    $cpnb_cookiesSettings_arr = json_decode($cpnb_cookiesSettings, true);
    $cpnb_specific_cookies_category_accepted = $cpnb_cookiesSettings_arr[$cpnb_specific_cookie_category_name_to_be_blocked];

    if (isset($jcookies[$cpnb_cookie_name]) && $cpnb_specific_cookies_category_accepted === 1)
    {
      $cookies_accepted = 1; // Granted
    }
    elseif ((isset($jcookies['cpnbCookiesDeclined']) || isset($jcookies[$cpnb_cookie_name])) && $cpnb_specific_cookies_category_accepted === 0)
    {
        $cookies_accepted = -1; // Denied
    }
}
/**
 * END: Check if Cookies are accepted from the User (Compatible with Cookies Policy Notification Bar - Joomla! plugin by Web357.com)
 */
?>

<!-- DEFAULT GOOGLE CONSENT -->
<!-- Global site tag (gtag.js) - Google Analytics -->
<script async src="https://www.googletagmanager.com/gtag/js?id=G-XXXXXX"></script>
<script>
  window.dataLayer = window.dataLayer || [];
  function gtag(){dataLayer.push(arguments);}

  // Default to 'denied'.
  gtag('consent', 'default', {
    'ad_storage': 'denied',
    'analytics_storage': 'denied'
  });

  gtag('js', new Date());
  gtag('config', 'G-XXXXXX');
</script>

<?php
/**
 * Here you will place the gtag based on user's choice (Accept, Decline)
 */
if ($cookies_accepted === 1): ?>
    <!-- GOOGLE CONSENT GRANTED -->
    <!-- When users specify consent or their consent status is known from a previous page load, update measurement behavior with the gtag('consent', 'update', ...) command. Call update as soon as possible on every page. After a user grants consent, persist their choice and call the update command accordingly on subsequent pages.
    For example, the following code grants consent when user agrees to allow advertising cookies: -->
    <script>
        gtag('consent', 'update', {
            'ad_storage': 'granted',
            'analytics_storage': 'granted'
        });
    </script>
<?php elseif ($cookies_accepted === -1): ?>
    <!-- GOOGLE CONSENT DENIED -->
    <script>
        gtag('consent', 'update', {
            'ad_storage': 'denied',
            'analytics_storage': 'denied'
        });
    </script>
<?php endif; ?>

</body>
</html>