DeleteService::updateRelation

private function updateRelation(): void
{
	if ($this->needUpdateRecent)
	{
		$newLastId = $this->chatLastMessage['ID'] ?? 0;
	}
	else
	{
		$newLastId = $this->getPreviousMessageId();
	}
	Application::getConnection()->query("
		UPDATE b_im_relation 
		SET LAST_ID = {$newLastId} 
		WHERE CHAT_ID = {$this->message->getChatId()} AND LAST_ID = {$this->message->getMessageId()}
		");
}