implement torrent/magnet download feature

src/Repository/TorrentDownloadFileRepository.php

@@ -0,0 +1,53 @@
+<?php
+
+namespace App\Repository;
+
+use App\Entity\TorrentDownloadFile;
+use Doctrine\Bundle\DoctrineBundle\Repository\ServiceEntityRepository;
+use Doctrine\Persistence\ManagerRegistry;
+
+/**
+ * @extends ServiceEntityRepository<TorrentDownloadFile>
+ *
+ * @method TorrentDownloadFile|null find($id, $lockMode = null, $lockVersion = null)
+ * @method TorrentDownloadFile|null findOneBy(array $criteria, array $orderBy = null)
+ * @method TorrentDownloadFile[]    findAll()
+ * @method TorrentDownloadFile[]    findBy(array $criteria, array $orderBy = null, $limit = null, $offset = null)
+ */
+class TorrentDownloadFileRepository extends ServiceEntityRepository
+{
+    public function __construct(ManagerRegistry $registry)
+    {
+        parent::__construct($registry, TorrentDownloadFile::class);
+    }
+
+    public function findTorrentDownloadFile(
+        int $torrentId,
+        int $userId
+    ): ?TorrentDownloadFile
+    {
+        return $this->createQueryBuilder('tdf')
+            ->where('tdf.torrentId = :torrentId')
+            ->andWhere('tdf.userId = :userId')
+            ->setParameter('torrentId', $torrentId)
+            ->setParameter('userId', $userId)
+            ->orderBy('tdf.id', 'DESC') // same to ts.added
+            ->setMaxResults(1)
+            ->getQuery()
+            ->getOneOrNullResult()
+        ;
+    }
+
+    public function findTorrentDownloadFilesTotalByTorrentId(
+        int $torrentId
+    ): int
+    {
+        return $this->createQueryBuilder('tdf')
+            ->select('count(tdf.id)')
+            ->where('tdf.torrentId = :torrentId')
+            ->setParameter('torrentId', $torrentId)
+            ->getQuery()
+            ->getSingleScalarResult()
+        ;
+    }
+}