move mutation dest dir fix

internal/mutations.go

@@ -70,6 +70,13 @@ func moveMutation(ctx context.Context, src, dest string) (*File, error) {
 		return nil, fmt.Errorf("Failed to get s3Client from context")
 	}
 
+	// Check if dest is a file or a dir
+	if strings.HasSuffix(dest, "/") {
+		// create new dest id
+		// TODO: What if a file with this id already exists?
+		dest += getFilenameFromID(src)
+	}
+
 	// There is no (spoon) move. Only copy and delete
 	info, err := s3Client.CopyObject(ctx, minio.CopyDestOptions{
 		Bucket: bucketName,