Router::getCalendarUrlWithOldRouting

protected function getCalendarUrlWithOldRouting(int $entityTypeId, int $categoryId = null): ?Uri
{
	if ($entityTypeId === \CCrmOwnerType::Deal && !is_null($categoryId))
	{
		$template = Option::get(self::MODULE_ID, 'path_to_deal_category_calendar');

		return new Uri(\CComponentEngine::makePathFromTemplate($template, ['category_id' => $categoryId]));
	}

	// to Deal/Lead
	$entityName = mb_strtolower(\CCrmOwnerType::ResolveName($entityTypeId));
	$template = Option::get(static::MODULE_ID, "path_to_{$entityName}_calendar");
	if (empty($template))
	{
		return null;
	}

	return new Uri(\CComponentEngine::makePathFromTemplate($template));
}