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<?php |
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namespace App\Movies\EventListener; |
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use App\Genres\Entity\Genre; |
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use App\Guests\Entity\GuestSession; |
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use App\Guests\Entity\GuestWatchedMovie; |
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use App\Movies\Entity\Movie; |
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use App\Movies\Entity\WatchedMovie; |
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use App\Users\Entity\User; |
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use App\Users\Entity\UserWatchedMovie; |
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use Doctrine\DBAL\Exception\UniqueConstraintViolationException; |
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use Doctrine\ORM\EntityManagerInterface; |
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use Enqueue\Client\TopicSubscriberInterface; |
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use Interop\Queue\Context; |
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use Interop\Queue\Message as QMessage; |
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use Interop\Queue\Processor; |
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use Psr\Log\LoggerInterface; |
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// Looks like here some logic problem |
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// todo construct entities by params from message here instead of create each of them with correct associations |
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// TODO IMPORTANT |
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class WatchedMovieProcessor implements Processor, TopicSubscriberInterface |
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{ |
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public const ADD_WATCHED_MOVIE_TMDB = 'addWatchedMovieTMDB'; |
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private $em; |
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private $logger; |
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public function __construct(EntityManagerInterface $em, LoggerInterface $logger) |
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{ |
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$this->em = $em; |
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$this->logger = $logger; |
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} |
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/** |
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* This method called when user or guest trying to add movie to own list of watched movies but we do not have this movie in our db yet. |
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* |
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* @param QMessage $message |
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* @param Context $session |
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* |
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* @throws \Doctrine\ORM\ORMException|\Exception |
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* |
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* @return object|string |
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*/ |
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public function process(QMessage $message, Context $session) |
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{ |
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$watchedMovies = $message->getBody(); |
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$watchedMovies = unserialize($watchedMovies); |
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$validClasses = [UserWatchedMovie::class, GuestWatchedMovie::class]; |
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if ($this->em->isOpen() === false) { |
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throw new \ErrorException('em is closed'); |
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} |
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/** @var $watchedMovies UserWatchedMovie[]|GuestWatchedMovie[] */ |
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foreach ($watchedMovies as $watchedMovie) { |
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if (\in_array(\get_class($watchedMovie), $validClasses, true) === false) { |
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$this->logger->error('Unexpected behavior: $watchedMovie not in range of valid classes', [ |
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'actualClass' => \get_class($watchedMovie), |
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]); |
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continue; |
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} |
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$movie = $watchedMovie->getMovie(); // Not saved movie |
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$movie = $this->refreshGenresAssociations($movie); |
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$newWatchedMovie = $this->recreateWatchedMovie($watchedMovie, $movie); |
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$this->em->persist($movie); |
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$this->em->persist($newWatchedMovie); |
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} |
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try { |
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$this->em->flush(); |
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} catch (UniqueConstraintViolationException $exception) { |
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$this->logger->error('UniqueConstraintViolationException when we are trying to save watched movie', [ |
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'message' => $exception->getMessage(), |
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]); |
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} finally { |
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$this->em->clear(); |
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} |
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return self::ACK; |
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} |
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/** |
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* @param WatchedMovie $watchedMovie |
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* @param Movie $movie |
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* |
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* @throws \Doctrine\ORM\ORMException |
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* |
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* @return WatchedMovie |
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*/ |
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private function recreateWatchedMovie(WatchedMovie $watchedMovie, Movie $movie): WatchedMovie |
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{ |
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// Recreate *WatchedMovie entity with new managed by doctrine associations |
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if ($watchedMovie instanceof UserWatchedMovie) { |
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$newWatchedMovie = $this->recreateUserWatchedMovie($watchedMovie, $movie); |
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} |
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if ($watchedMovie instanceof GuestWatchedMovie) { |
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$newWatchedMovie = $this->recreateGuestWatchedMovie($watchedMovie, $movie); |
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} |
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if (!isset($newWatchedMovie)) { |
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throw new \LogicException('Watched movie not a valid child class of WatchedMovie'); |
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} |
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return $newWatchedMovie; |
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} |
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/** |
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* @param UserWatchedMovie $userWatchedMovie |
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* @param Movie $movie |
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* |
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* @throws \Doctrine\ORM\ORMException|\Exception |
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* |
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* @return UserWatchedMovie |
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*/ |
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private function recreateUserWatchedMovie(UserWatchedMovie $userWatchedMovie, Movie $movie): UserWatchedMovie |
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{ |
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/** @var $userReference User */ |
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$userReference = $this->em->getReference(User::class, $userWatchedMovie->getUser()->getId()); |
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return new UserWatchedMovie($userReference, $movie, $userWatchedMovie->getVote(), $userWatchedMovie->getWatchedAt()); |
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} |
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/** |
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* @param GuestWatchedMovie $guestWatchedMovie |
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* @param Movie $movie |
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* |
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* @throws \Doctrine\ORM\ORMException|\Exception |
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* |
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* @return GuestWatchedMovie |
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*/ |
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private function recreateGuestWatchedMovie(GuestWatchedMovie $guestWatchedMovie, Movie $movie): GuestWatchedMovie |
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{ |
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/** @var $guestSessionReference GuestSession */ |
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$guestSessionReference = $this->em->getReference(GuestSession::class, $guestWatchedMovie->getGuestSession()->getId()); |
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return new GuestWatchedMovie($guestSessionReference, $movie, $guestWatchedMovie->getVote(), $guestWatchedMovie->getWatchedAt()); |
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} |
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/** |
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* @param Movie $movie |
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* |
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* @throws \Doctrine\ORM\ORMException |
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* |
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* @return Movie |
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*/ |
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private function refreshGenresAssociations(Movie $movie): Movie |
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{ |
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$genres = $movie->getGenres(); |
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$movie->removeAllGenres(); // Because doctrine doesn't know about these genres due unserialization |
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foreach ($genres as $genre) { |
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/** @var $genreReference Genre */ |
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$genreReference = $this->em->getReference(Genre::class, $genre->getId()); // so we need to re-add 'em |
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$movie->addGenre($genreReference); |
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} |
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return $movie; |
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} |
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public static function getSubscribedTopics() |
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{ |
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return [self::ADD_WATCHED_MOVIE_TMDB]; |
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} |
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} |
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svbackend /
my-art-lib
