CCalendarEvent::GetList

static function GetList($params = [])
{
	$isIntranetEnabled = CCalendar::IsIntranetEnabled();
	$checkPermissions = ($params['checkPermissions'] ?? null) !== false;
	$bCache = CCalendar::CacheTime() > 0;
	$params['setDefaultLimit'] = ($params['setDefaultLimit'] ?? null) === true;
	$userId = (isset($params['userId']) && $params['userId']) ? (int)$params['userId'] : CCalendar::GetCurUserId();
	$params['parseDescription'] = $params['parseDescription'] ?? true;
	$params['fetchAttendees'] = ($params['fetchAttendees'] ?? null) !== false;
	$resultEntryList = null;
	$userIndex = null;

	CTimeZone::Disable();
	if ($bCache)
	{
		$cache = new CPHPCache;
		$cacheId = 'eventlist'.md5(serialize($params)).CCalendar::GetOffset();
		if ($checkPermissions)
		{
			$cacheId .= 'perm' . CCalendar::GetCurUserId() . '|';
		}
		if (CCalendar::IsSocNet() && CCalendar::IsSocnetAdmin())
		{
			$cacheId .= 'socnetAdmin|';
		}
		$cachePath = CCalendar::CachePath().'event_list';

		if ($cache->InitCache(CCalendar::CacheTime(), $cacheId, $cachePath))
		{
			$cachedData = $cache->GetVars();
			if (isset($cachedData['dateTimeFormat']) && $cachedData['dateTimeFormat'] === FORMAT_DATETIME)
			{
				$resultEntryList = $cachedData["resultEntryList"];
				$userIndex = $cachedData["userIndex"];
			}
		}
	}

	if (!$bCache || !isset($resultEntryList))
	{
		$arFilter = $params['arFilter'];
		$resultEntryList = [];

		if (self::$useOrmFilter)
		{
			[$eventList, $parentMeetingIdList, $involvedUsersIdList] = self::getListOrm($params);
		}
		else
		{
			[$eventList, $parentMeetingIdList, $involvedUsersIdList] = self::getListOld($params);
		}

		if (!empty($params['fetchAttendees']) && !empty($parentMeetingIdList))
		{
			$attendeeListData = self::getAttendeeList($parentMeetingIdList);
			$attendeeList = $attendeeListData['attendeeList'];
			$involvedUsersIdList = array_unique(array_merge($involvedUsersIdList, $attendeeListData['userIdList']));
		}
		$userIndex = self::getUsersDetails($involvedUsersIdList);

		foreach ($eventList as $event)
		{
			if (
				$event['IS_MEETING']
				&& isset($attendeeList[$event['PARENT_ID']])
				&& $isIntranetEnabled
			)
			{
				$event['ATTENDEE_LIST'] = $attendeeList[$event['PARENT_ID']];
			}
			else if (!empty($params['fetchAttendees']))
			{
				$event['ATTENDEE_LIST'] = [
					[
						'id' => (int)$event['MEETING_HOST'],
						'entryId' => $event['ID'],
						'status' => in_array($event['MEETING_STATUS'], ['Y', 'N', 'Q', 'H'])
							? $event['MEETING_STATUS']
							: 'H'
						,
					]
				];
			}
			else
			{
				$event['ATTENDEE_LIST'] = [];
			}

			if ($checkPermissions)
			{
				$checkPermissionsForEvent = $userId !== (int)($event['CREATED_BY'] ?? null); // It's creator

				// It's event in user's calendar
				if (
					$checkPermissionsForEvent
					&& $event['CAL_TYPE'] === 'user'
					&& $userId === (int)$event['OWNER_ID']
				)
				{
					$checkPermissionsForEvent = false;
				}
				if (
					$checkPermissionsForEvent
					&& $event['IS_MEETING']
					&& ($event['USER_MEETING'] ?? null)
					&& (int)$event['USER_MEETING']['ATTENDEE_ID'] === $userId
				)
				{
					$checkPermissionsForEvent = false;
				}

				if (
					$checkPermissionsForEvent
					&& $event['IS_MEETING']
					&& is_array($event['ATTENDEE_LIST'] ?? null)
				)
				{
					foreach($event['ATTENDEE_LIST'] as $attendee)
					{
						if ((int)$attendee['id'] === $userId)
						{
							$checkPermissionsForEvent = false;
							break;
						}
					}
				}

				if ($checkPermissionsForEvent)
				{
					$event = self::ApplyAccessRestrictions($event, $userId);
				}
			}

			if ($event !== false)
			{
				$event = self::PreHandleEvent($event, [
					'parseDescription' => $params['parseDescription']
				]);

				if (!empty($params['parseRecursion']) && self::CheckRecurcion($event))
				{
					self::ParseRecursion($resultEntryList, $event, [
						'userId' => $userId,
						'fromLimit' => $arFilter["FROM_LIMIT"] ?? null,
						'toLimit' => $arFilter["TO_LIMIT"] ?? null,
						'loadLimit' => $params["limit"] ?? null,
						'instanceCount' => $params['maxInstanceCount'] ?? false,
						'preciseLimits' => $params['preciseLimits'] ?? false
					]);
				}
				else
				{
					self::HandleEvent($resultEntryList, $event, $userId);
				}
			}
		}

		if ($bCache)
		{
			$cache->StartDataCache(CCalendar::CacheTime(), $cacheId, $cachePath);
			$cache->EndDataCache([
				"resultEntryList" => $resultEntryList,
				"userIndex" => $userIndex,
				"dateTimeFormat" => FORMAT_DATETIME,
			]);
		}
	}

	if (is_array($userIndex))
	{
		foreach($userIndex as $userIndexId => $userIndexDetails)
		{
			self::$userIndex[$userIndexId] = $userIndexDetails;
		}
	}

	CTimeZone::Enable();

	return $resultEntryList;
}