domain_path.module

<?php

/**
 * @file
 *  Path alias handling for multiple domains.
 */

use Drupal\Core\Entity\EntityInterface;

/**
 * Implements hook_form_alter().
 */
function domain_path_form_alter(&$form, &$form_state, $form_id) {
  // We really only want to alter entity forms with the path widget on it since
  // we're editing path aliases.
  if (isset($form['path']['widget']) && ($object = $form_state->getFormObject())
    && !empty($object) && is_callable([$object, 'getEntity'])
    && ($entity = $object->getEntity())) {
    $domain_path_helper = \Drupal::service('domain_path.helper');
    if ($domain_path_helper->domainPathsIsEnabled($entity)) {
      $domain_path_helper->alterEntityForm($form, $form_state, $entity);
    }
  }
}

/**
 * Implements hook_entity_delete().
 */
function domain_path_entity_delete(EntityInterface $entity) {
  \Drupal::service('domain_path.helper')->deleteEntityDomainPaths($entity, TRUE);
}

/**
 * Implements hook_entity_translation_delete().
 */
function domain_path_entity_translation_delete(EntityInterface $translation) {
  \Drupal::service('domain_path.helper')->deleteEntityDomainPaths($translation);
}