DataSyncManager::syncCalendarSections

private function syncCalendarSections(
	Connection $connection,
	array $calendars
): array
{
	$calendarNames = [];
	$result = [];

	foreach ($calendars as $calendar)
	{
		if (isset($calendar['TYPE']) && $calendar['TYPE'] === 'VEVENT')
		{
			$calendarNames[$calendar['XML_ID']] = $calendar;
		}
	}

	$sectionsLink = SectionConnectionTable::query()
		->setSelect([
            'SECTION_CONNECTION_ID' => 'ID',
            'NAME' => 'SECTION.NAME',
            'EXTERNAL_TYPE' => 'SECTION.EXTERNAL_TYPE',
            'VENDOR_SECTION_ID',
            'VERSION_ID',
            'SECTION_ID',
		])
		->where('SECTION.CAL_TYPE', self::ENTITY_TYPE)
		->where('SECTION.OWNER_ID', $connection->getOwner()->getId())
		->where('CONNECTION_ID', $connection->getId())
		->exec()
	;

	while ($link = $sectionsLink->fetch())
	{
		$xmlId = $link['VENDOR_SECTION_ID'];
		if (empty($xmlId))
		{
			continue;
		}

		if (!array_key_exists($xmlId, $calendarNames))
		{
			$section = $this->mapperFactory->getSection()->getById($link['SECTION_ID']);
			if ($section)
			{
				(new IncomingManager($connection))->deleteSection($section, $link['SECTION_CONNECTION_ID']);
			}
		}
		else
		{
			if (($link['VERSION_ID'] ?? null) !== ($calendarNames[$xmlId]['MODIFICATION_LABEL'] ?? null))
			{
				$fields =  [
					'ID' => (int)($link['SECTION_ID'] ?? null),
					'NAME' => isset($link['EXTERNAL_TYPE']) && $link['EXTERNAL_TYPE'] === 'local'
						? $link['NAME']
						: $calendarNames[$xmlId]['NAME']
					,
					'DESCRIPTION' => $calendarNames[$xmlId]['DESCRIPTION'] ?? null,
					'COLOR' => $calendarNames[$xmlId]['COLOR'] ?? null,
				];

				CCalendarSect::Edit([
					'arFields' => $fields,
					'bAffectToDav' => false,
					'originalFrom' => $connection->getVendor()->getCode(),
				]);

				SectionConnectionTable::update((int)$link['SECTION_CONNECTION_ID'], [
						'LAST_SYNC_DATE' => new DateTime(),
						'LAST_SYNC_STATUS' => Dictionary::SYNC_STATUS['success'],
						'VERSION_ID' => $calendarNames[$xmlId]['MODIFICATION_LABEL'] ?? null,
					]
				);

				$result[] = [
					'XML_ID' => $xmlId,
					'SECTION_ID' => $link['SECTION_ID'],
					'SECTION_CONNECTION_ID' => $link['SECTION_CONNECTION_ID'],
					'SYNC_TOKEN' => $link['VERSION_ID'] ?? null,
					'IS_NEW' => false,
				];
			}

			unset($calendarNames[$xmlId]);
		}
	}

	foreach ($calendarNames as $curXmlId => $calendar)
	{
		$fields = [
			'CAL_TYPE' => self::ENTITY_TYPE,
			'OWNER_ID' => $connection->getOwner()->getId(),
			'CREATED_BY' => $connection->getOwner()->getId(),
			'NAME' => $calendar['NAME'],
			'DESCRIPTION' => $calendar['DESCRIPTION'],
			'COLOR' => $calendar['COLOR'],
			'EXPORT' => ['ALLOW' => false],
			'EXTERNAL_TYPE' => $connection->getVendor()->getCode(),
		];

		$id = (int)CCalendarSect::Edit([
			'arFields' => $fields,
			'bAffectToDav' => false,
			'originalFrom' => $connection->getVendor()->getCode(),
		]);

		if ($id)
		{
			$linkId = SectionConnectionTable::add([
                    'SECTION_ID' => $id,
                    'CONNECTION_ID' => $connection->getId(),
                    'VENDOR_SECTION_ID' => $curXmlId,
                    'ACTIVE' => 'Y',
                    'LAST_SYNC_DATE' => new DateTime(),
                    'LAST_SYNC_STATUS' => Dictionary::SYNC_STATUS['success'],
                    'VERSION_ID' => $calendar['MODIFICATION_LABEL'],
                ]);

			$result[] = [
				'XML_ID' => $curXmlId,
				'SECTION_ID' => $id,
				'SECTION_CONNECTION_ID' => $linkId->getId(),
				'SYNC_TOKEN' => $calendar['MODIFICATION_LABEL'],
				'IS_NEW' => true,
			];
		}
	}

	return $result;
}