added features and fixes

internal/upload/handlers.go

@@ -119,7 +119,7 @@ func (h *Handler) Upload(w http.ResponseWriter, r *http.Request) {
 	}
 
 	w.Header().Set("Content-Type", "application/json")
-	fmt.Fprintf(w, `{"url":"/%s/%s","size":%d}`, h.bucket, objectName, info.Size)
+	fmt.Fprintf(w, `{"url":"/files/%s","size":%d}`, objectName, info.Size)
 }
 
 func (h *Handler) Serve(w http.ResponseWriter, r *http.Request) {
@@ -153,6 +153,11 @@ func (h *Handler) Serve(w http.ResponseWriter, r *http.Request) {
 
 	w.Header().Set("Content-Type", stat.ContentType)
 	w.Header().Set("Content-Length", fmt.Sprintf("%d", stat.Size))
-	w.Header().Set("Content-Disposition", "attachment")
+	// Inline display for images; attachment for everything else
+	if strings.HasPrefix(stat.ContentType, "image/") {
+		w.Header().Set("Content-Disposition", "inline")
+	} else {
+		w.Header().Set("Content-Disposition", "attachment")
+	}
 	io.Copy(w, obj)
 }