class ContentTranslationEnabledSetting

class ContentTranslationEnabledSetting extends ProcessPluginBase {
  
  /**
   * {@inheritdoc}
   */
  public function transform($value, MigrateExecutableInterface $migrate_executable, Row $row, $destination_property) {
    if (!is_array($value)) {
      throw new MigrateException('Input should be an array');
    }
    [$language_content_type, $entity_translation_entity_types, $entity_type] = $value;
    switch ($language_content_type) {
      // In the case of being 0, it will be skipped. We are not actually setting
      // a null value.
      case 0:
        $setting = NULL;
        break;

      case 1:
        $setting = FALSE;
        break;

      case 2:
        $setting = FALSE;
        break;

      case 4:
        // If entity translation is enabled return the status of comment
        // translations.
        $setting = FALSE;
        if (!empty($entity_translation_entity_types[$entity_type])) {
          $setting = TRUE;
        }
        break;

      default:
        $setting = NULL;
        break;

    }
    return $setting;
  }

}