DisappearService::disappearMessage

static function disappearMessage(Message $message, int $hours): Result
{
	if (
		$message->isDisappearing()
	)
	{
		return (new Result())->addError(new ChatChatError(ChatChatError::ALREADY_DISAPPEARING));
	}

	return MessageDisappearingTable::add([
		'MESSAGE_ID' => $message->getId(),
		'DATE_CREATE' => new DateTime(),
		'DATE_REMOVE' => (new DateTime())->add($hours . ' ' . self::DISAPPEARING_TIME_UNIT)
	]);
}