LogFollow::checkDestinationsFollowStatus

static function checkDestinationsFollowStatus($params = [])
{
	$logId = (isset($params['logId']) ? (int)$params['logId'] : 0);
	if ($logId <= 0)
	{
		return false;
	}

	$key = 'L' . $logId;

	$destUserIdList = [];
	$res = LogRightTable::getList([
		'filter' => [
			'LOG_ID' => $logId
		],
		'select' => [ 'GROUP_CODE' ]
	]);
	while ($logRight = $res->fetch())
	{
		if (preg_match('/^U(d+)$/', $logRight['GROUP_CODE'], $matches))
		{
			$destUserIdList[] = $matches[1];
		}
	}

	$defaultFollowValue = false;
	$userFollowValue = [];

	if (!empty($destUserIdList))
	{
		$defaultFollowValue = LogFollowTable::getDefaultValue([
			'USER_ID' => false
		]);

		$res = LogFollowTable::getList([
			'filter' => [
				'=CODE' => [ '**', $key ],
				'@USER_ID' => $destUserIdList
			],
			'select' => [ 'CODE', 'TYPE', 'USER_ID' ]
		]);
		while($logFollow = $res->fetch())
		{
			if (!isset($userFollowValue[$logFollow['USER_ID']]))
			{
				$userFollowValue[$logFollow['USER_ID']] = [];
			}
			$userFollowValue[$logFollow['USER_ID']][$logFollow['CODE']] = $logFollow['TYPE'];
		}
	}

	foreach($destUserIdList as $destUserId)
	{
		$subscribeTypeList = [];

		if (
			(
				!isset($userFollowValue[$destUserId])
				&& $defaultFollowValue === 'N'
			)
			|| (
				isset($userFollowValue[$destUserId])
				&& !isset($userFollowValue[$destUserId][$key]) // && isset($userFollowValue[$destUserId]['**'])
				&& $userFollowValue[$destUserId]['**'] === 'N'
			)
		)
		{
			$subscribeTypeList[] = 'FOLLOW';
		}

		BitrixSocialnetworkComponentHelper::userLogSubscribe([
			'logId' => $logId,
			'userId' => $destUserId,
			'typeList' => $subscribeTypeList,
			'followDate' => 'CURRENT'
		]);

	}

	return true;
}