Notification::getMessageStatusCode

static function getMessageStatusCode(string $statusId, Event $event = null): ?int
{
	$isDelivered = $statusId === MessageStatus::DELIVERED;
	// WORKAROUND: to correct update Bitrix24 notification
	$isSmsNotificationDelivered = isset($event)
		&& !self::isWhatsappMessage($event)
		&& $statusId === MessageStatus::IN_DELIVERY;

	if ($isDelivered || $isSmsNotificationDelivered)
	{
		return static::MESSAGE_SUCCESS;
	}

	if ($statusId === MessageStatus::READ)
	{
		return static::MESSAGE_READ;
	}

	if (in_array($statusId, [MessageStatus::UNDELIVERED, MessageStatus::ERROR, MessageStatus::FAILED], true))
	{
		return static::MESSAGE_FAILURE;
	}

	return null;
}