Method summarize

app/src/Misc/BackupManager.cpp:289–331

* @brief Returns a structural summary of a snapshot file (title, counts, group titles). */

 * @brief Returns a structural summary of a snapshot file (title, counts, group titles).
 */
QVariantMap Misc::BackupManager::summarize(const QString& path) const
{
  QVariantMap out;
  if (path.isEmpty())
    return out;

  QFile in(path);
  if (!in.open(QIODevice::ReadOnly))
    return out;

  const auto bytes = in.readAll();
  in.close();

  QJsonParseError err{};
  const auto doc = QJsonDocument::fromJson(bytes, &err);
  if (err.error != QJsonParseError::NoError || !doc.isObject())
    return out;

  const auto project = doc.object();
  out.insert(QStringLiteral("title"), project.value(QStringLiteral("title")).toString());

  if (project.contains(kBackupMetaKey))
    out.insert(QStringLiteral("backupMeta"),
               project.value(kBackupMetaKey).toObject().toVariantMap());

  const auto groups = project.value(QStringLiteral("groups")).toArray();
  out.insert(QStringLiteral("groupCount"), groups.size());

  int datasetCount = 0;
  QStringList groupTitles;
  for (const auto& gv : groups) {
    const auto g  = gv.toObject();
    datasetCount += g.value(QStringLiteral("datasets")).toArray().size();
    groupTitles.append(g.value(QStringLiteral("title")).toString());
  }
  out.insert(QStringLiteral("datasetCount"), datasetCount);
  out.insert(QStringLiteral("groupTitles"), groupTitles);

  const auto sources = project.value(QStringLiteral("sources")).toArray();
  out.insert(QStringLiteral("sourceCount"), sources.isEmpty() ? 1 : sources.size());
  out.insert(QStringLiteral("parserHash"), parserSignature(sources));
  return out;
}

/**
 * @brief Returns a structural summary of the current in-memory ProjectModel.