cookies-1.0.3/modules/cookies_facebook_pixel/cookies_facebook_pixel.module

<?php

/**
 * @file
 * Contains cookies_facebook_pixel.module.
 */

use Drupal\cookies\Constants\CookiesConstants;
use Drupal\Core\Asset\AttachedAssetsInterface;
use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\Core\Template\Attribute;

/**
 * Implements hook_help().
 */
function cookies_facebook_pixel_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    // Main module help for the cookies_facebook_pixel module.
    case 'help.page.cookies_facebook_pixel':
      $output = '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('Submodule of COOKiES to manage Facebook Pixel implemented by facebook_pixel module.') . '</p>';
      return $output;

    default:
  }
}

/**
 * Implements hook_page_attachments().
 */
function cookies_facebook_pixel_page_attachments(&$page) {
  $doKo = Drupal::service('cookies.knock_out')->doKnockOut();

  // Knock-Out supporting the module "Facebook Pixel (facebook_pixel)".
  if ($doKo && isset($page["#attached"]["html_head"])) {
    foreach ($page["#attached"]["html_head"] as $key => $head_tag) {
      $scripts = [
        'facebook_tracking_pixel_script',
      ];
      foreach ($scripts as $script) {
        if (in_array($script, $head_tag)) {
          $attr = (isset($head_tag[0]['#attributes'])) ? $head_tag[0]['#attributes'] : [];
          $attr = array_merge(
            $attr,
            [
              'type' => CookiesConstants::COOKIES_SCRIPT_KO_TYPE,
              'id' => "cookies_{$script}",
              'data-cookieconsent' => 'facebook_pixel',
            ],
          );
          $page["#attached"]["html_head"][$key][0]['#attributes'] = new Attribute($attr);
          break;
        }
      }
    }
    $page["#attached"]["library"][] = 'cookies_facebook_pixel/facebook_pixel';
  }
}

/**
 * Implements hook_js_alter().
 */
function cookies_facebook_pixel_js_alter(array &$javascript, AttachedAssetsInterface $assets) {
  $doKo = Drupal::service('cookies.knock_out')->doKnockOut();
  if ($doKo) {
    $modulePath = \Drupal::service('module_handler')->getModule('facebook_pixel')->getPath();
    $script = $modulePath . '/js/facebook_pixel.js';
    if (isset($javascript[$script])) {
      $javascript[$script]['preprocess'] = FALSE;
      $javascript[$script]['attributes']['type'] = CookiesConstants::COOKIES_SCRIPT_KO_TYPE;
      $javascript[$script]['attributes']['id'] = 'facebook_tracking_pixel_script';
      $javascript[$script]['attributes']['data-cookieconsent'] = 'facebook_pixel';
    }
  }
}