_CTimeManCalendarNew::Get

public function Get($arParams)
{
	global $USER;

	$arEvents = CCalendarEvent::GetList(
		[
			'arFilter' => [
				"ID" => $arParams['ID'],
				"DELETED" => "N",
			],
			'parseRecursion' => true,
			'fetchAttendees' => true,
			'checkPermissions' => true,
		]
	);

	if (is_array($arEvents) && count($arEvents) > 0)
	{
		$arEvent = $arEvents[0];
		if ($arEvent['IS_MEETING'])
		{
			$arEvent['GUESTS'] = [];
			if (is_array($arEvent['ATTENDEE_LIST']))
			{
				$userIndex = CCalendarEvent::getUserIndex();
				foreach ($arEvent['ATTENDEE_LIST'] as $attendee)
				{
					if (isset($userIndex[$attendee["id"]]))
					{
						$arEvent['GUESTS'][] = [
							'id' => $attendee['id'],
							'name' => $userIndex[$attendee["id"]]['DISPLAY_NAME'],
							'status' => $attendee['status'],
							'accessibility' => $arEvent['ACCESSIBILITY'],
							'bHost' => $attendee['id'] == $arEvent['MEETING_HOST'],
						];

						if ($attendee['id'] == $USER->GetID())
						{
							$arEvent['STATUS'] = $attendee['status'];
						}
					}
				}
			}
			elseif (is_array($arEvent['~ATTENDEES']))
			{
				foreach ($arEvent['~ATTENDEES'] as $guest)
				{
					$arEvent['GUESTS'][] = [
						'id' => $guest['USER_ID'],
						'name' => CUser::FormatName(CSite::GetNameFormat(false), $guest, true),
						'status' => $guest['STATUS'],
						'accessibility' => $guest['ACCESSIBILITY'],
						'bHost' => $guest['USER_ID'] == $arEvent['MEETING_HOST'],
					];

					if ($guest['USER_ID'] == $USER->GetID())
					{
						$arEvent['STATUS'] = $guest['STATUS'];
					}
				}
			}
		}

		$set = CCalendar::GetSettings();
		$url = str_replace(
				   '#user_id#', $arEvent['CREATED_BY'], $set['path_to_user_calendar']
			   ) . '?EVENT_ID=' . $arEvent['ID'];

		return [
			'ID' => $arEvent['ID'],
			'NAME' => $arEvent['NAME'],
			'DETAIL_TEXT' => $arEvent['DESCRIPTION'],
			'DATE_FROM' => $arEvent['DATE_FROM'],
			'DATE_TO' => $arEvent['DATE_TO'],
			'ACCESSIBILITY' => $arEvent['ACCESSIBILITY'],
			'IMPORTANCE' => $arEvent['IMPORTANCE'],
			'STATUS' => $arEvent['STATUS'],
			'IS_MEETING' => $arEvent['IS_MEETING'] ? 'Y' : 'N',
			'GUESTS' => $arEvent['GUESTS'],
			'URL' => $url,
		];
	}
}