User.php

См. документацию.

<?php
 
namespace Bitrix\Im\V2\Controller;
 
use Bitrix\Im\V2\Entity;
use Bitrix\Main\Engine\AutoWire\ExactParameter;
use Bitrix\HumanResources\Service\Container;
use Bitrix\HumanResources\Type;
 
class User extends BaseController
{
    public function getPrimaryAutoWiredParameter()
    {
        return new ExactParameter(
            Entity\User\User::class,
            'user',
            function ($className, int $id) {
                return $this->getUserById($id);
            }
        );
    }

    public function getDepartmentAction(Entity\User\User $user): ?array
    {
        $nodeRepository = Container::getNodeRepository();
        $userNodes = $nodeRepository->findAllByUserId($user->getId())->getItemMap();
        $userDepartments = array_filter($userNodes, function($node) {
            return $node->type === Type\NodeEntityType::DEPARTMENT;
        });
        usort($userDepartments, function($a, $b) {
            return $a->depth <=> $b->depth;
        });
        $department = array_pop($userDepartments);
 
        return [
            'id' => $department->id,
            'name' => $department->name,
        ];
    }
 
    protected function getUserById(int $id): ?Entity\User\User
    {
        $user = Entity\User\User::getInstance($id);
 
        if (!$user->isExist())
        {
            $this->addError(new Entity\User\UserError(Entity\User\UserError::NOT_FOUND));
 
            return null;
        }
 
        return $user;
    }
}