Have got saving working

services/imgedit/service.go

@@ -175,6 +175,58 @@ func (s *Service) UpdateProcessor(ctx context.Context, sessionID string, req Upd
 	return session, nil
 }
 
+type SaveResult struct {
+	UploadID int64 `json:"upload_id"`
+}
+
+func (s *Service) Save(ctx context.Context, sessionID string, mode string) (*SaveResult, error) {
+	session, err := s.loadAndVerifySession(ctx, sessionID)
+	if err != nil {
+		return nil, err
+	}
+
+	if len(session.Processors) == 0 {
+		return nil, fmt.Errorf("no processors in session")
+	}
+
+	lastProc := session.Processors[len(session.Processors)-1]
+	finalImagePath := fmt.Sprintf("%v/%v/%v.%v", s.scratchDir, session.GUID, lastProc.VersionID, session.ImageExt)
+
+	var mimeType string
+	switch session.ImageExt {
+	case "jpg", "jpeg":
+		mimeType = "image/jpeg"
+	case "png":
+		mimeType = "image/png"
+	}
+
+	var uploadID int64
+	switch mode {
+	case "replace":
+		upload, err := s.uploadService.ReplaceUploadFile(ctx, session.BaseUploadID, finalImagePath)
+		if err != nil {
+			return nil, err
+		}
+		uploadID = upload.ID
+	case "copy":
+		baseUpload, _, err := s.uploadService.OpenUpload(ctx, session.BaseUploadID)
+		if err != nil {
+			return nil, err
+		}
+		upload, err := s.uploadService.CreateUploadFromFile(ctx, finalImagePath, baseUpload.Filename, mimeType)
+		if err != nil {
+			return nil, err
+		}
+		uploadID = upload.ID
+	default:
+		return nil, fmt.Errorf("unknown save mode: %v", mode)
+	}
+
+	s.sessionStore.delete(session.GUID)
+
+	return &SaveResult{UploadID: uploadID}, nil
+}
+
 func (s *Service) loadAndVerifySession(ctx context.Context, sessionID string) (*models.ImageEditSession, error) {
 	site, user, err := s.fetchSiteAndUser(ctx)
 	if err != nil {

services/imgedit/store.go

@@ -42,6 +42,10 @@ func (ss *sessionStore) get(guid string) (*models.ImageEditSession, error) {
 	return &sessionData, nil
 }
 
+func (ss *sessionStore) delete(guid string) {
+	os.RemoveAll(filepath.Join(ss.baseDir, guid))
+}
+
 func (ss *sessionStore) getImage(session *models.ImageEditSession, imageFilename string) (string, func() (io.ReadCloser, error), error) {
 	fullPath := filepath.Join(ss.baseDir, session.GUID, imageFilename)
 	if s, err := os.Stat(fullPath); err != nil {