Chat::removeUsers

public function removeUsers(array $userIds): self
{
	if (!$this->getChatId() || empty($userIds) || !count($userIds))
	{
		return $this;
	}

	$userIds = filter_var(
		$userIds,
		FILTER_VALIDATE_INT,
		[
			'flags' => FILTER_REQUIRE_ARRAY,
			'options' => ['min_range' => 1],
		]
	);

	foreach ($userIds as $key => $userId)
	{
		if (!is_int($userId))
		{
			unset($userIds[$key]);
		}
	}

	$relations = $this->getRelations([
		'CHAT_ID' => $this->getChatId(),
	]);

	$removedCount = RelationTable::deleteBatch([
		['=USER_ID' => $userIds],
		['=CHAT_ID' => $this->getChatId()]
	]);

	if (!$removedCount)
	{
		return $this;
	}

	$relations = $this->getRelations();
	if ($extranetFlag = $this->getExtranet() ?? false)
	{
		$extranetFlag = false;
		foreach ($relations as $relation)
		{
			if ($extranetFlag = $relation->getUser()->isExtranet())
			{
				break;
			}
		}
	}

	$this
		->setExtranet($extranetFlag)
		->setUserCount($relations->count())
		->save();

	if (BitrixMainLoader::includeModule('pull'))
	{
		$pushMessage = [
			'module_id' => 'im',
			'command' => 'chatUsersRemove',
			'params' => [
				'chatId' => $this->getChatId(),
				'dialogId' => 'chat' . $this->getChatId(),
				'chatExtranet' => $extranetFlag,
				'userCount' => $relations->count()
			],
			'extra' => BitrixImCommon::getPullExtra()
		];

		$allUsersIds = $relations->getUserIds();
		if ($this->getEntityType() === self::ENTITY_TYPE_LINE)
		{
			foreach ($relations as $relation)
			{
				if ($relation->getUser()->getExternalAuthId() === 'imconnector')
				{
					unset($allUsersIds[$relation['userId']]);
				}
			}
		}
		BitrixPullEvent::add(array_values($allUsersIds), $pushMessage);
		if ($this->getType() === self::IM_TYPE_OPEN  || $this->getType() === self::IM_TYPE_OPEN_LINE)
		{
			CPullWatch::AddToStack('IM_PUBLIC_' . $this->getChatId(), $pushMessage);
		}
	}

	return $this;
}