public function __construct(EntityManager $entityManager, AlbumCoverProvider $albumCoverProvider, string $songsDirectory)
{
$this->entityManager = $entityManager;
$this->songsDirectory = $songsDirectory;
$this->albumCoverProvider = $albumCoverProvider;
$this->songRepository = $entityManager->getRepository(Song::getClassName());
$this->genresRepository = $entityManager->getRepository(Genre::getClassName());
$this->addFunctions();
$this->genreCache = [];
$this->hashCache = [];
}
/**
* @return string[]
*/
public function getAllGenreNames() : array
{
$qb = $this->entityManager->createQueryBuilder();
$qb->select('g.name')->from(Genre::getClassName(), 'g');
return array_column($qb->getQuery()->getScalarResult(), 'name');
}