CDavConnection::Add

static function Add($arFields)
{
	global $DB, $APPLICATION;

	$res = self::ParseFields($arFields);
	if ($res !== true)
	{
		foreach ($res as $v)
		{
			$APPLICATION->ThrowException($v[0], $v[1]);
		}
		return null;
	}

	$arInsert = $DB->PrepareInsert("b_dav_connections", $arFields);

	$strSql =
		"INSERT INTO b_dav_connections (".$arInsert[0].", CREATED, MODIFIED) ".
		"VALUES(".$arInsert[1].", ".$DB::CurrentTimeFunction().", ".$DB::CurrentTimeFunction().")";
	$DB->Query($strSql, false, "File: ".__FILE__."
Line: ".__LINE__);

	$id = (int)$DB->LastID();
	if ($id > 0 && BitrixMainLoader::includeModule('calendar'))
	{
		// TODO: remove dependence from different calendar systems
		/** @var GoogleHelper $googleHelper */
		$googleHelper = ServiceLocator::getInstance()->get('calendar.service.google.helper');
		/** @var Office365Helper $office365Helper */
		$office365Helper = ServiceLocator::getInstance()->get('calendar.service.office365.helper');
		$iCloudHelper = ServiceLocator::getInstance()->get('calendar.service.icloud.helper');
		$caldavHelper = ServiceLocator::getInstance()->get('calendar.service.caldav.helper');
		$connectionType = $googleHelper->isGoogleConnection($arFields['ACCOUNT_TYPE'])
			? 'google'
			: ($office365Helper->isVendorConnection($arFields['ACCOUNT_TYPE'])
				? 'office365'
				: ($iCloudHelper->isVendorConnection($arFields['ACCOUNT_TYPE'])
					? 'icloud'
					: ($caldavHelper->isYandex($arFields['SERVER_HOST'])
						? 'yandex'
						: 'caldav'
					)
				)
			)
		;
		$connectionName = $connectionType . $id;
		BitrixCalendarUtil::addPullEvent(
			'add_sync_connection',
			$arFields['ENTITY_ID'],
			[
				'syncInfo' => [
					$connectionName => [
						'type' => $connectionType,
					],
				]
			]
		);

		AddEventToStatFile('calendar', 'sync_connection_connected', $connectionType, '', 'server_connection');
	}

	return $id;
}