CCalendarEvent::getAttendeeList

static function getAttendeeList($entryIdList = []): array
{
	global $DB;
	$attendeeList = [];
	$userIdList = [];

	if (CCalendar::IsSocNet())
	{
		$entryIdList =
			is_array($entryIdList)
				? array_map(
					function($entryId) {return (int)$entryId;} ,
					array_unique($entryIdList)
			)
				: [(int)$entryIdList]
		;

		if (!empty($entryIdList))
		{
			$strSql = "
				SELECT
					CE.OWNER_ID AS USER_ID,
					CE.ID, CE.PARENT_ID, CE.MEETING_STATUS, CE.MEETING_HOST
				FROM
					b_calendar_event CE
				WHERE
					CE.ACTIVE = 'Y' AND
					CE.CAL_TYPE = 'user' AND
					CE.DELETED = 'N' AND
					CE.PARENT_ID in (".implode(',', $entryIdList).")"
			;

			$res = $DB->Query($strSql, false, "File: ".__FILE__."
Line: ".__LINE__);
			while($entry = $res->Fetch())
			{
				$entry['USER_ID'] = (int)$entry['USER_ID'];
				if (!isset($attendeeList[$entry['PARENT_ID']]))
				{
					$attendeeList[$entry['PARENT_ID']] = [];
				}
				$entry["STATUS"] = trim($entry["MEETING_STATUS"]);
				if ($entry['PARENT_ID'] === $entry['ID'] || $entry['USER_ID'] === $entry['MEETING_HOST'])
				{
					$entry["STATUS"] = "H";
				}
				$attendeeList[$entry['PARENT_ID']][] = [
					'id' => $entry['USER_ID'],
					'entryId' => $entry['ID'],
					'status' => $entry["STATUS"]
				];

				if (!in_array($entry['USER_ID'], $userIdList, true))
				{
					$userIdList[] = $entry['USER_ID'];
				}
			}
		}
	}

	return [
		'attendeeList' => $attendeeList,
		'userIdList' => $userIdList
	];
}