Method HandlePATCH_nodes_uid

Modules/RESTAPI/src/mitkDataStorageController.cpp:1240–1327

}

void DataStorageController::HandlePATCH_nodes_uid(const httplib::Request& req, httplib::Response& res)
{
  if (!m_Bridge.HasDataStorage())
  {
    this->SendErrorResponse(res, 503, ErrorResponse::DataStorageNotAvailable(req.path));
    return;
  }

  const std::string uid = req.path_params.at("uid");
  if (!ValidateUid(uid))
  {
    this->SendErrorResponse(res, 400, ErrorResponse::InvalidRequest("Invalid UID format", req.path));
    return;
  }

  // Check if node exists
  auto existingNode = m_Bridge.GetNode(uid);
  if (!existingNode.has_value())
  {
    this->SendErrorResponse(res, 404, ErrorResponse::NodeNotFound(uid, req.path));
    return;
  }

  // Parse request body
  nlohmann::json updates;
  try
  {
    updates = nlohmann::json::parse(req.body);
  }
  catch (const nlohmann::json::parse_error& e)
  {
    this->SendErrorResponse(res, 400, ErrorResponse::InvalidRequest("Invalid JSON: " + std::string(e.what()), req.path));
    return;
  }

  // PATCH /nodes/{uid} only supports reparenting via "parent_uid"
  if (!updates.is_object() || !updates.contains("parent_uid"))
  {
    this->SendErrorResponse(res, 400, ErrorResponse::InvalidRequest(
      "PATCH /nodes/{uid} only supports reparenting. "
      "Provide 'parent_uid' in the request body (use null for root level).", req.path));
    return;
  }

  // Validate parent_uid value: must be null (move to root) or an existing node UID
  if (!updates["parent_uid"].is_null())
  {
    if (!updates["parent_uid"].is_string())
    {
      this->SendErrorResponse(res, 400, ErrorResponse::InvalidRequest(
        "Invalid 'parent_uid': must be a string UID or null.", req.path));
      return;
    }
    const std::string parentUid = updates["parent_uid"].get<std::string>();
    if (!ValidateUid(parentUid))
    {
      this->SendErrorResponse(res, 400, ErrorResponse::InvalidRequest("Invalid parent_uid format", req.path));
      return;