Refactor uploadFile to support multiple file uploads and update related types and handlers

app/src/api/file.ts

@@ -4,7 +4,9 @@ import {
   API_BASE_URL,
   isLookupResponse,
   isSaveFileResponse,
+  isUploadFilesResponse,
   type SaveFileResponse,
+  type UploadFilesResponse,
 } from '@/types/api';
 
 /**
@@ -203,19 +205,19 @@ export const moveFile = async (
  * @param workspaceName - The name of the workspace
  * @param directoryPath - The directory path where files should be uploaded
  * @param files - Multiple files to upload
- * @returns {Promise<SaveFileResponse>} A promise that resolves to the upload file response
+ * @returns {Promise<UploadFilesResponse>} A promise that resolves to the upload file response
  * @throws {Error} If the API call fails or returns an invalid response
  */
 export const uploadFile = async (
   workspaceName: string,
   directoryPath: string,
   files: FileList
-): Promise<SaveFileResponse> => {
+): Promise<UploadFilesResponse> => {
   const formData = new FormData();
 
   // Add all files to the form data
   Array.from(files).forEach((file) => {
-    formData.append('file', file);
+    formData.append('files', file);
   });
 
   const response = await apiCall(
@@ -228,7 +230,7 @@ export const uploadFile = async (
     }
   );
   const data: unknown = await response.json();
-  if (!isSaveFileResponse(data)) {
+  if (!isUploadFilesResponse(data)) {
     throw new Error('Invalid upload file response received from API');
   }
   return data;

app/src/hooks/useFileOperations.ts

@@ -122,7 +122,6 @@ export const useFileOperations = (): UseFileOperationsResult => {
       if (!currentWorkspace) return false;
 
       try {
-        // Use unified upload API that handles both single and multiple files
         await uploadFile(currentWorkspace.name, targetPath || '', files);
 
         notifications.show({

app/src/types/api.ts

@@ -98,6 +98,24 @@ export function isSaveFileResponse(obj: unknown): obj is SaveFileResponse {
   );
 }
 
+export interface UploadFilesResponse {
+  filePaths: string[];
+}
+
+export function isUploadFilesResponse(
+  obj: unknown
+): obj is UploadFilesResponse {
+  return (
+    typeof obj === 'object' &&
+    obj !== null &&
+    'filePaths' in obj &&
+    Array.isArray((obj as UploadFilesResponse).filePaths) &&
+    (obj as UploadFilesResponse).filePaths.every(
+      (path) => typeof path === 'string'
+    )
+  );
+}
+
 export interface UpdateLastOpenedFileRequest {
   filePath: string;
 }

server/internal/handlers/file_handlers.go

@@ -24,6 +24,10 @@ type SaveFileResponse struct {
 	UpdatedAt time.Time `json:"updatedAt"`
 }
 
+type UploadFilesResponse struct {
+	FilePaths []string `json:"filePaths"`
+}
+
 // LastOpenedFileResponse represents a response to a last opened file request
 type LastOpenedFileResponse struct {
 	LastOpenedFilePath string `json:"lastOpenedFilePath"`
@@ -294,8 +298,8 @@ func (h *Handler) SaveFile() http.HandlerFunc {
 }
 
 // UploadFile godoc
-// @Summary Upload file
-// @Description Uploads a file to the user's workspace
+// @Summary Upload files
+// @Description Uploads one or more files to the user's workspace
 // @Tags files
 // @ID uploadFile
 // @Security CookieAuth
@@ -303,10 +307,13 @@ func (h *Handler) SaveFile() http.HandlerFunc {
 // @Produce json
 // @Param workspace_name path string true "Workspace name"
 // @Param file_path query string true "Directory path"
-// @Param file formData file true "File to upload"
-// @Success 200 {object} SaveFileResponse
-// @Failure 400 {object} ErrorResponse "Failed to get file from form"
+// @Param files formData file true "Files to upload"
+// @Success 200 {object} UploadFilesResponse
+// @Failure 400 {object} ErrorResponse "No files found in form"
+// @Failure 400 {object} ErrorResponse "file_path is required"
 // @Failure 400 {object} ErrorResponse "Invalid file path"
+// @Failure 400 {object} ErrorResponse "Empty file uploaded"
+// @Failure 400 {object} ErrorResponse "Failed to get file from form"
 // @Failure 500 {object} ErrorResponse "Failed to read uploaded file"
 // @Failure 500 {object} ErrorResponse "Failed to save file"
 // @Router /workspaces/{workspace_name}/files/upload/ [post]
@@ -323,7 +330,45 @@ func (h *Handler) UploadFile() http.HandlerFunc {
 			"clientIP", r.RemoteAddr,
 		)
 
-		file, header, err := r.FormFile("file")
+		form := r.MultipartForm
+		if form == nil || len(form.File) == 0 {
+			log.Debug("no files found in form")
+			respondError(w, "No files found in form", http.StatusBadRequest)
+			return
+		}
+
+		uploadPath := r.URL.Query().Get("file_path")
+		if uploadPath == "" {
+			log.Debug("missing file_path parameter")
+			respondError(w, "file_path is required", http.StatusBadRequest)
+			return
+		}
+
+		decodedPath, err := url.PathUnescape(uploadPath)
+		if err != nil {
+			log.Error("failed to decode file path",
+				"filePath", uploadPath,
+				"error", err.Error(),
+			)
+			respondError(w, "Invalid file path", http.StatusBadRequest)
+			return
+		}
+
+		uploadedPaths := []string{}
+
+		for _, formFile := range form.File["files"] {
+
+			if formFile.Filename == "" || formFile.Size == 0 {
+				log.Debug("empty file uploaded",
+					"fileName", formFile.Filename,
+					"fileSize", formFile.Size,
+				)
+				respondError(w, "Empty file uploaded", http.StatusBadRequest)
+				return
+			}
+
+			// Open the uploaded file
+			file, err := formFile.Open()
 			if err != nil {
 				log.Error("failed to get file from form",
 					"error", err.Error(),
@@ -339,40 +384,24 @@ func (h *Handler) UploadFile() http.HandlerFunc {
 				}
 			}()
 
-		filePath := r.URL.Query().Get("file_path")
-		if filePath == "" {
-			log.Debug("missing file_path parameter")
-			respondError(w, "file_path is required", http.StatusBadRequest)
-			return
-		}
+			filePath := decodedPath + "/" + formFile.Filename
 
-		decodedPath, err := url.PathUnescape(filePath)
-		if err != nil {
-			log.Error("failed to decode file path",
-				"filePath", filePath,
-				"error", err.Error(),
-			)
-			respondError(w, "Invalid file path", http.StatusBadRequest)
-			return
-		}
-		decodedPath = decodedPath + "/" + header.Filename
-
-		content := make([]byte, header.Size)
+			content := make([]byte, formFile.Size)
 			_, err = file.Read(content)
 			if err != nil && err != io.EOF {
 				log.Error("failed to read uploaded file",
-				"filePath", decodedPath,
+					"filePath", filePath,
 					"error", err.Error(),
 				)
 				respondError(w, "Failed to read uploaded file", http.StatusInternalServerError)
 				return
 			}
 
-		err = h.Storage.SaveFile(ctx.UserID, ctx.Workspace.ID, decodedPath, content)
+			err = h.Storage.SaveFile(ctx.UserID, ctx.Workspace.ID, filePath, content)
 			if err != nil {
 				if storage.IsPathValidationError(err) {
 					log.Error("invalid file path attempted",
-					"filePath", decodedPath,
+						"filePath", filePath,
 						"error", err.Error(),
 					)
 					respondError(w, "Invalid file path", http.StatusBadRequest)
@@ -380,7 +409,7 @@ func (h *Handler) UploadFile() http.HandlerFunc {
 				}
 
 				log.Error("failed to save file",
-				"filePath", decodedPath,
+					"filePath", filePath,
 					"contentSize", len(content),
 					"error", err.Error(),
 				)
@@ -388,10 +417,11 @@ func (h *Handler) UploadFile() http.HandlerFunc {
 				return
 			}
 
-		response := SaveFileResponse{
-			FilePath:  decodedPath,
-			Size:      int64(len(content)),
-			UpdatedAt: time.Now().UTC(),
+			uploadedPaths = append(uploadedPaths, filePath)
+		}
+
+		response := UploadFilesResponse{
+			FilePaths: uploadedPaths,
 		}
 		respondJSON(w, response)
 	}