added copying and moving

app/service/storageService/storageService.go

@@ -46,6 +46,35 @@ func (s *StorageService) DownloadFilePrep(abs_path string) (*os.File, string, in
 	return f, filepath.Base(abs_path), info.Size(), nil
 }
 
+func (s *StorageService) Move(src_abs_path string, dest_abs_path string) error {
+	_, err := s.storageRepo.EntryInfo(src_abs_path)
+	if err != nil {
+		return responseErrors.ErrFileDoesNotExist
+	}
+
+	if err == nil {
+		return responseErrors.ErrNameTaken
+	} else if os.IsNotExist(err) {
+		return s.storageRepo.Move(src_abs_path, dest_abs_path)
+	} else {
+		return err
+	}
+}
+func (s *StorageService) Copy(src_abs_path string, dest_abs_path string) error {
+	_, err := s.storageRepo.EntryInfo(src_abs_path)
+	if err != nil {
+		return responseErrors.ErrFileDoesNotExist
+	}
+
+	if err == nil {
+		return responseErrors.ErrNameTaken
+	} else if os.IsNotExist(err) {
+		return s.storageRepo.Copy(src_abs_path, dest_abs_path)
+	} else {
+		return err
+	}
+}
+
 func (s *StorageService) UploadFile(c fiber.Ctx, abs_path string, f *multipart.FileHeader) error {
 	info, err := s.storageRepo.EntryInfo(abs_path)
 	if err != nil || !info.IsDir() {