Part-DB-server/src/Security/Voter/GroupVoter.php

<?php
/**
 * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
 *
 * Copyright (C) 2019 - 2022 Jan Böhmer (https://github.com/jbtronics)
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

declare(strict_types=1);

namespace App\Security\Voter;

use App\Entity\UserSystem\Group;
use App\Entity\UserSystem\User;
use App\Services\UserSystem\VoterHelper;
use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
use Symfony\Component\Security\Core\Authorization\Voter\Voter;

final class GroupVoter extends Voter
{

    public function __construct(private readonly VoterHelper $helper)
    {
    }

    /**
     * Similar to voteOnAttribute, but checking for the anonymous user is already done.
     * The current user (or the anonymous user) is passed by $user.
     *
     * @param  string  $attribute
     */
    protected function voteOnAttribute(string $attribute, $subject, TokenInterface $token): bool
    {
        return $this->helper->isGranted($token, 'groups', $attribute);
    }

    /**
     * Determines if the attribute and subject are supported by this voter.
     *
     * @param  string  $attribute An attribute
     * @param mixed  $subject   The subject to secure, e.g. an object the user wants to access or any other PHP type
     *
     * @return bool True if the attribute and subject are supported, false otherwise
     */
    protected function supports(string $attribute, $subject): bool
    {
        if (is_a($subject, Group::class, true)) {
            return $this->helper->isValidOperation('groups', $attribute);
        }

        return false;
    }
}