user.php

<?php
 
namespace Bitrix\Pull\Controller;
 
use \Bitrix\Main\Application;
use Bitrix\Main\Engine;
use Bitrix\Main\Error;
use Bitrix\Main\Type\DateTime;
use Bitrix\Main\UserTable;
use Bitrix\Pull\JsonRpcTransport;
 
class User extends Engine\Controller
{
    function getLastSeenAction(array $userIds, bool $sendToQueueSever = false)
    {
        $userIds = array_map(fn ($a) => (int)$a, $userIds);
        if (empty($userIds))
        {
            $this->addError(new Error("userIds should not be empty"));
        }
 
        $now = time();
        $timestamps = [];
        $result = [];
 
        $cursor = UserTable::getList([
            'select' => ['ID', 'LAST_ACTIVITY_DATE'],
            'filter' => ['=ID' => $userIds],
        ]);
 
        foreach ($cursor->getIterator() as $row)
        {
            if ($row['LAST_ACTIVITY_DATE'] instanceof DateTime)
            {
                $userId = $row['ID'];
                $lastSeen = $row['LAST_ACTIVITY_DATE']->getTimestamp();
                $timestamps[$userId] = $lastSeen;
                $result[$userId] = $now - $lastSeen;
            }
        }
 
        if ($sendToQueueSever && !empty($timestamps))
        {
            Application::getInstance()->addBackgroundJob(
                function (array $timestamps) {
                    (new JsonRpcTransport())->updateUsersLastSeen($timestamps);
                },
                [$timestamps]
            );
        }
        return $result;
    }
}