Method groupUpdate

app/src/API/Handlers/ProjectHandler.cpp:4699–4753

* @brief Patch any subset of group fields by id. */

 * @brief Patch any subset of group fields by id.
 */
API::CommandResponse API::Handlers::ProjectHandler::groupUpdate(const QString& id,
                                                                const QJsonObject& params)
{
  if (!params.contains(QStringLiteral("groupId")))
    return CommandResponse::makeError(
      id, ErrorCode::MissingParam, QStringLiteral("Missing required parameter: groupId"));

  const int groupId  = params.value(QStringLiteral("groupId")).toInt();
  auto& project      = DataModel::ProjectModel::instance();
  const auto& groups = project.groups();
  if (groupId < 0 || static_cast<size_t>(groupId) >= groups.size())
    return CommandResponse::makeError(
      id, ErrorCode::InvalidParam, QStringLiteral("Group id not found: %1").arg(groupId));

  DataModel::Group g = groups[groupId];
  bool rebuildTree   = false;
  QSet<QString> consumed{QStringLiteral("groupId")};
  const auto identityKeyCount = consumed.size();

  const auto take = [&](const QString& key) -> bool {
    if (!params.contains(key))
      return false;

    consumed.insert(key);
    return true;
  };

  if (take(QStringLiteral("title"))) {
    g.title     = params.value(QStringLiteral("title")).toString();
    rebuildTree = true;
  }
  if (take(QStringLiteral("widget"))) {
    g.widget    = params.value(QStringLiteral("widget")).toString();
    rebuildTree = true;
  }
  if (take(QStringLiteral("columns")))
    g.columns = params.value(QStringLiteral("columns")).toInt();

  if (take(Keys::SourceId))
    g.sourceId = params.value(Keys::SourceId).toInt();

  if (take(QStringLiteral("painterCode")))
    g.painterCode = params.value(QStringLiteral("painterCode")).toString();

  if (consumed.size() > identityKeyCount)
    rebuildTree = true;

  project.updateGroup(groupId, g, rebuildTree);

  QJsonObject result;
  result[QStringLiteral("groupId")] = groupId;
  result[QStringLiteral("updated")] = true;
  appendUnknownFieldsWarning(result, params, consumed, QStringLiteral("project.group.update"));
  return CommandResponse::makeSuccess(id, result);
}

/**
 * @brief Patch optional dataset fields onto @p d; returns non-empty error string on failure.