Method groupDelete

app/src/API/Handlers/ProjectHandler.cpp:1721–1808

* @brief Delete a group by id */

 * @brief Delete a group by id
 */
API::CommandResponse API::Handlers::ProjectHandler::groupDelete(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));

  const auto& targetGroup = groups[groupId];
  QJsonArray childDatasets;
  for (const auto& d : targetGroup.datasets) {
    QJsonObject row;
    row[Keys::DatasetId]         = d.datasetId;
    row[Keys::UniqueId]          = d.uniqueId;
    row[QStringLiteral("title")] = d.title;
    childDatasets.append(row);
  }

  QJsonObject deleted;
  deleted[QStringLiteral("groupId")]      = groupId;
  deleted[QStringLiteral("title")]        = targetGroup.title;
  deleted[QStringLiteral("widget")]       = targetGroup.widget;
  deleted[QStringLiteral("datasetCount")] = childDatasets.size();
  deleted[QStringLiteral("datasets")]     = childDatasets;

  const bool isDryRun = params.value(QStringLiteral("dryRun")).toBool(false);

  QJsonArray renumbered;
  for (const auto& g : groups) {
    if (g.groupId <= groupId)
      continue;

    QJsonObject row;
    row[QStringLiteral("oldGroupId")]   = g.groupId;
    row[QStringLiteral("newGroupId")]   = g.groupId - 1;
    row[QStringLiteral("title")]        = g.title;
    row[QStringLiteral("datasetCount")] = static_cast<int>(g.datasets.size());
    renumbered.append(row);
  }

  QString backupPath;
  qint64 preEpoch = 0;
  if (!isDryRun) {
    backupPath = Misc::BackupManager::instance().snapshot(QStringLiteral("pre-groupDelete"));
    preEpoch   = captureProjectEpoch();
    project.deleteGroup(groupId);
  }

  QJsonObject result;
  if (isDryRun)
    result[QStringLiteral("dryRun")] = true;