attempt to fix sse

Signed-off-by: Christian Richter <crichter@owncloud.com>

internal/http/services/appprovider/appprovider.go

@@ -230,6 +230,16 @@ func (s *svc) handleNew(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	touchfileReq := &provider.TouchFileRequest{
+		Ref: fileRef,
+	}
+
+	_, err = client.TouchFile(ctx, touchfileReq)
+	if err != nil {
+		writeError(w, r, appErrorServerError, "error sending a grpc touchfile request", err)
+		return
+	}
+
 	// Create empty file via storageprovider
 	createReq := &provider.InitiateFileUploadRequest{
 		Ref: fileRef,
@@ -244,7 +254,7 @@ func (s *svc) handleNew(w http.ResponseWriter, r *http.Request) {
 	}
 
 	// having a client.CreateFile() function would come in handy here...
-
+	// TODO: this is IMHO the culprit why the event is not triggered
 	createRes, err := client.InitiateFileUpload(ctx, createReq)
 	if err != nil {
 		writeError(w, r, appErrorServerError, "error calling InitiateFileUpload", err)