User: remove empty email / username check from update in service (#77347)

User: remove empty email / username check from update in service

pkg/api/user.go

@@ -221,6 +221,15 @@ func (hs *HTTPServer) handleUpdateUser(ctx context.Context, cmd user.UpdateUserC
 		return response.Error(http.StatusForbidden, "User info cannot be updated for external Users", nil)
 	}
 
+	if len(cmd.Login) == 0 {
+		cmd.Login = cmd.Email
+	}
+
+	// if login is still empty both email and login field is missing
+	if len(cmd.Login) == 0 {
+		return response.Err(user.ErrEmptyUsernameAndEmail.Errorf("user cannot be created with empty username and email"))
+	}
+
 	if err := hs.userService.Update(ctx, &cmd); err != nil {
 		if errors.Is(err, user.ErrCaseInsensitive) {
 			return response.Error(http.StatusConflict, "Update would result in user login conflict", err)