CAllIMContactList::IsExtranet

static function IsExtranet($arUser)
{
	$result = false;

	if (!IsModuleInstalled('intranet'))
	{
		return false;
	}

	if (($arUser['EXTERNAL_AUTH_ID'] ?? null) === BitrixImBot::EXTERNAL_AUTH_ID)
	{
		return false;
	}

	if (array_key_exists('UF_DEPARTMENT', $arUser))
	{
		if ($arUser['UF_DEPARTMENT'] == "")
		{
			$result = true;
		}
		else if (is_array($arUser['UF_DEPARTMENT']) && empty($arUser['UF_DEPARTMENT']))
		{
			$result = true;
		}
		else if (is_array($arUser['UF_DEPARTMENT']) && count($arUser['UF_DEPARTMENT']) == 1 && $arUser['UF_DEPARTMENT'][0] == 0)
		{
			$result = true;
		}
	}
	else
	{
		$result = true;
	}

	return $result;
}