CCalendarRestService::EventGet

static function EventGet($params = [], $nav = null, $server = null)
{
	$userId = CCalendar::GetCurUserId();
	$methodName = "calendar.event.get";

	$necessaryParams = ['type'];
	foreach ($necessaryParams as $param)
	{
		if (empty($params[$param]))
		{
			throw new RestException(Loc::getMessage('CAL_REST_PARAM_EXCEPTION', [
				'#PARAM_NAME#' => $param,
				'#REST_METHOD#' => $methodName
			]));
		}
	}

	if (Loader::includeModule('intranet') && !BitrixIntranetUtil::isIntranetUser())
	{
		throw new RestException(Loc::getMessage('CAL_REST_ACCESS_DENIED'));
	}

	$type = $params['type'];
	$ownerId = (int)$params['ownerId'];
	$from = false;
	$to = false;
	if (isset($params['from']))
	{
		$from = CRestUtil::unConvertDateTime($params['from']);
	}
	if (isset($params['to']))
	{
		$to = CRestUtil::unConvertDateTime($params['to']);
	}

	// Default values for from-to period
	if ($from === false && $to === false)
	{
		// Limits
		$ts = time();
		$pastDays = 30;
		$futureDays = 90;
		$from = CCalendar::Date($ts - CCalendar::DAY_LENGTH * $pastDays, false);
		$to = CCalendar::Date($ts + CCalendar::DAY_LENGTH * $futureDays, false);
	}
	elseif ($from !== false && $to === false)
	{
		$to = CCalendar::Date(CCalendar::GetMaxTimestamp(), false);
	}

	$arSectionIds = [];

	$sections = CCalendarSect::GetList([
		'arFilter' => [
			'CAL_TYPE' => $type,
			'OWNER_ID' => $ownerId
		]
	]);
	foreach ($sections as $section)
	{
		if ($section['PERM']['view_full'] || $section['PERM']['view_title'] || $section['PERM']['view_time'])
		{
			$arSectionIds[] = $section['ID'];
		}
	}

	if (isset($params['section']))
	{
		if (!is_array($params['section']) && (int)$params['section'] > 0)
		{
			$params['section'] = [(int)$params['section']];
		}

		if (is_array($params['section']))
		{
			$arSectionIds = array_intersect($arSectionIds, $params['section']);
		}
	}

	$params = [
		'type' => $type,
		'ownerId' => $ownerId,
		'userId' => $userId,
		'section' => $arSectionIds,
		'fromLimit' => $from,
		'toLimit' => $to,
	];

	$arAttendees = [];

	return CCalendar::GetEventList($params, $arAttendees);
}