MemberEntities.php

См. документацию.

<?php
 
namespace Bitrix\Im\V2\Controller\Chat;
 
use Bitrix\Im\V2\Chat;
use Bitrix\Im\V2\Controller\BaseController;
use Bitrix\Im\V2\Controller\Filter\CheckActionAccess;
use Bitrix\Im\V2\Integration\HumanResources\Structure;
use Bitrix\Im\V2\Relation\Reason;
use Bitrix\Main\Engine\CurrentUser;
use Bitrix\Main\UI\EntitySelector\Converter;
 
class MemberEntities extends BaseController
{
    protected const LIMIT = 1000;

    public function listAction(Chat $chat): ?array
    {
        $relations = $chat->getRelationByReason(Reason::DEFAULT);
        $userCount = $relations->count();
 
        $users = [];
        if ($userCount < self::LIMIT)
        {
            foreach ($relations->getUserIds() as $userId)
            {
                $user = \Bitrix\Im\V2\Entity\User\User::getInstance($userId);
                if (!$user->isBot())
                {
                    $users[] = ['user', $userId];
                }
            }
        }
 
        $departments = Converter::convertFromFinderCodes((new Structure($chat))->getNodesAccessCodes());
        foreach ($departments as $key => $department)
        {
            if (is_numeric($department[1]))
            {
                $departments[$key][1] = (int)$department[1];
            }
        }
 
        return [
            'memberEntities' => array_merge($users, $departments),
            'userCount' => $userCount,
            'areUsersCollapsed' => $userCount >= self::LIMIT,
        ];
    }
}