Add retain_rd_torrent_name setting

internal/torrent/manager.go

@@ -404,6 +404,9 @@ func hashStringToFh(s string) (fh uint64) {
 }
 
 func (t *TorrentManager) getName(name, originalName string) string {
+	if t.cfg.EnableRetainRDTorrentName() {
+		return name
+	}
 	// drop the extension from the name
 	if t.cfg.EnableRetainFolderNameExtension() && strings.Contains(name, originalName) {
 		return name
@@ -655,6 +658,19 @@ func (t *TorrentManager) Repair(accessKey string) {
 			missingFiles = append(missingFiles, *file)
 		}
 	})
+
+	// if we download a single file, it will be named differently
+	// so we need to download 1 extra file to preserve the name
+	// this is only relevant if we enable retain_rd_torrent_name
+	if t.cfg.EnableRetainRDTorrentName() && len(missingFiles) == 1 && streamableCount > 1 {
+		// add the first file link encountered with a prefix of http
+		for _, file := range torrent.SelectedFiles.Items() {
+			if strings.HasPrefix(file.Link, "http") {
+				missingFiles = append(missingFiles, *file)
+				break
+			}
+		}
+	}
 	if len(missingFiles) > 0 {
 		t.log.Infof("Redownloading in multiple batches the %d missing files for torrent %s", len(missingFiles), torrent.AccessKey)
 		// if not, last resort: add only the missing files but do it in 2 batches
@@ -667,6 +683,8 @@ func (t *TorrentManager) Repair(accessKey string) {
 		if missingFiles2 != "" {
 			t.reinsertTorrent(torrent, missingFiles2)
 		}
+	} else {
+		t.log.Warnf("Torrent %s has no missing files to repair", torrent.AccessKey)
 	}
 }