src/Wallabag/CoreBundle/ParamConverter/UsernameRssTokenConverter.php

   1 <?php
   2
   3 namespace Wallabag\CoreBundle\ParamConverter;
   4
   5 use Doctrine\Common\Persistence\ManagerRegistry;
   6 use Sensio\Bundle\FrameworkExtraBundle\Configuration\ParamConverter;
   7 use Sensio\Bundle\FrameworkExtraBundle\Request\ParamConverter\ParamConverterInterface;
   8 use Symfony\Component\HttpFoundation\Request;
   9 use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
  10 use Wallabag\UserBundle\Entity\User;
  11
  12 /**
  13  * ParamConverter used in the RSS controller to retrieve the right user according to
  14  * username & token given in the url.
  15  *
  16  * @see http://stfalcon.com/en/blog/post/symfony2-custom-paramconverter
  17  */
  18 class UsernameRssTokenConverter implements ParamConverterInterface
  19 {
  20     private $registry;
  21
  22     /**
  23      * @param ManagerRegistry $registry Manager registry
  24      */
  25     public function __construct(ManagerRegistry $registry = null)
  26     {
  27         $this->registry = $registry;
  28     }
  29
  30     /**
  31      * {@inheritdoc}
  32      *
  33      * Check, if object supported by our converter
  34      */
  35     public function supports(ParamConverter $configuration)
  36     {
  37         // If there is no manager, this means that only Doctrine DBAL is configured
  38         // In this case we can do nothing and just return
  39         if (null === $this->registry || !count($this->registry->getManagers())) {
  40             return false;
  41         }
  42
  43         // Check, if option class was set in configuration
  44         if (null === $configuration->getClass()) {
  45             return false;
  46         }
  47
  48         // Get actual entity manager for class
  49         $em = $this->registry->getManagerForClass($configuration->getClass());
  50
  51         // Check, if class name is what we need
  52         if ('Wallabag\UserBundle\Entity\User' !== $em->getClassMetadata($configuration->getClass())->getName()) {
  53             return false;
  54         }
  55
  56         return true;
  57     }
  58
  59     /**
  60      * {@inheritdoc}
  61      *
  62      * Applies converting
  63      *
  64      * @throws \InvalidArgumentException When route attributes are missing
  65      * @throws NotFoundHttpException     When object not found
  66      */
  67     public function apply(Request $request, ParamConverter $configuration)
  68     {
  69         $username = $request->attributes->get('username');
  70         $rssToken = $request->attributes->get('token');
  71
  72         // Check, if route attributes exists
  73         if (null === $username || null === $rssToken) {
  74             throw new \InvalidArgumentException('Route attribute is missing');
  75         }
  76
  77         // Get actual entity manager for class
  78         $em = $this->registry->getManagerForClass($configuration->getClass());
  79
  80         $userRepository = $em->getRepository($configuration->getClass());
  81
  82         // Try to find user by its username and config rss_token
  83         $user = $userRepository->findOneByUsernameAndRsstoken($username, $rssToken);
  84
  85         if (null === $user || !($user instanceof User)) {
  86             throw new NotFoundHttpException(sprintf('%s not found.', $configuration->getClass()));
  87         }
  88
  89         // Map found user to the route's parameter
  90         $request->attributes->set($configuration->getName(), $user);
  91     }
  92 }