Only add DMM fragment when there is the same filename in the directory

internal/dav/response.go

@@ -43,7 +43,8 @@ func createSingleTorrentResponse(basePath string, torrents []torrent.Torrent, t
 	currentPath := filepath.Join(basePath, torrents[0].Name)
 	responses = append(responses, dav.Directory(currentPath))
 
-	seen := make(map[string]bool)
+	nameAndLink := make(map[string]bool)
+	finalName := make(map[string]bool)
 
 	var torrentResponses []dav.Response
 	for _, torrent := range torrents {
@@ -57,12 +58,15 @@ func createSingleTorrentResponse(basePath string, torrents []torrent.Torrent, t
 				continue
 			}
 			filename := filepath.Base(file.Path)
-			fragment := davextra.GetLinkFragment(file.Link)
+			if _, exists := nameAndLink[filename+file.Link]; exists {
-			filename = davextra.InsertLinkFragment(filename, fragment)
-			if _, exists := seen[filename]; exists {
 				continue
 			}
-			seen[filename] = true
+			nameAndLink[filename+file.Link] = true
+			if _, exists := finalName[filename]; exists {
+				fragment := davextra.GetLinkFragment(file.Link)
+				filename = davextra.InsertLinkFragment(filename, fragment)
+			}
+			finalName[filename] = true
 			filePath := filepath.Join(currentPath, filename)
 			torrentResponses = append(torrentResponses, dav.File(
 				filePath,