Relation::fillRestriction

public function fillRestriction(bool $hideHistory, Chat $chat): self
{
	if ($hideHistory)
	{
		$this
			->setStartId($chat->getLastMessageId() + 1)
			->setLastFileId($chat->getLastFileId())
			->setStartCounter($chat->getMessageCount())
		;
	}

	if (!$hideHistory && $chat->getContext()->getUserId() > 0)
	{
		$selfRelation = $chat->getSelfRelation();
		if ($selfRelation !== null && $selfRelation->getStartId() > 0)
		{
			$this
				->setStartCounter($selfRelation->getStartId())
				->setLastFileId($selfRelation->getLastFileId())
				->setStartCounter($selfRelation->getStartCounter())
			;
		}
	}

	return $this;
}