awurth / silex-user

src/Provider/UserProvider.php

<?php

/*
 * This file is part of the awurth/silex-user package.
 *
 * (c) Alexis Wurth <awurth.dev@gmail.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace AWurth\Silex\User\Provider;

use AWurth\Silex\User\Model\UserInterface;
use AWurth\Silex\User\Model\UserManagerInterface;
use Symfony\Component\Security\Core\Exception\UnsupportedUserException;
use Symfony\Component\Security\Core\Exception\UsernameNotFoundException;
use Symfony\Component\Security\Core\User\UserInterface as SecurityUserInterface;
use Symfony\Component\Security\Core\User\UserProviderInterface;

class UserProvider implements UserProviderInterface
{
    /**
     * @var UserManagerInterface
     */
    protected $userManager;

    /**
     * Constructor.
     *
     * @param UserManagerInterface $userManager
     */
    public function __construct(UserManagerInterface $userManager)
    {
        $this->userManager = $userManager;
    }

    /**
     * {@inheritdoc}
     */
    public function loadUserByUsername($username)
    {
        $user = $this->findUser($username);

        if (null === $user) {
            throw new UsernameNotFoundException(sprintf('Username "%s" does not exist.', $username));
        }

        return $user;
    }

    /**
     * {@inheritdoc}
     */
    public function refreshUser(SecurityUserInterface $user)
    {
        $class = get_class($user);

        if (!$user instanceof UserInterface) {
            throw new UnsupportedUserException(sprintf('Expected an instance of AWurth\Silex\User\Entity\UserInterface, but got "%s".', $class));
        }

        if (!$this->supportsClass($class)) {
            throw new UnsupportedUserException(sprintf('Expected an instance of %s, but got "%s".', $this->userManager->getClass(), $class));
        }

        return $this->loadUserByUsername($user->getUsername());
    }

    /**
     * {@inheritdoc}
     */
    public function supportsClass($class)
    {
        $userClass = $this->userManager->getClass();

        return $userClass === $class || is_subclass_of($class, $userClass);

Due to PHP Bug #53727, is_subclass_of might return inconsistent results on some PHP versions if $userClass can be an interface. If so, you could instead use ReflectionClass::implementsInterface.

    }

    /**
     * Finds a user by username.
     *
     * @param string $username
     *
     * @return UserInterface|null
     */
    protected function findUser($username)
    {
        return $this->userManager->findUserByUsername($username);
    }
}