#include "jsonparser.h"

#include <QJsonArray>
#include <QJsonObject>

#include "../model/tablemodel.h"

QList<QHash<int, QVariant>> JsonParser::toItemValuesList(const QByteArray& jsonData,
                                                         const QString& objectName) {
  QList<QHash<int, QVariant>> result;

  if (jsonData.isEmpty()) {
    return result;
  }

  QJsonArray itemArray = extractItemArray(jsonData, objectName);

  foreach (QJsonValue value, itemArray) {
    QJsonObject itemJsonObject  = value.toObject();
    QHash<int, QVariant> values = jsonObjectToItemValues(itemJsonObject);
    result.append(values);
  }
  return result;
}

QHash<int, QVariant> JsonParser::jsonObjectToItemValues(const QJsonObject& itemJsonObject) {
  QHash<int, QVariant> values;

  // TODO make this more generic (by reading from model meta data)
  values[TableModel::NameRole] =
      itemJsonObject[TableModel::ROLE_NAMES.value(TableModel::NameRole)].toString();
  values[TableModel::DescriptionRole] =
      itemJsonObject[TableModel::ROLE_NAMES.value(TableModel::DescriptionRole)].toString();
  values[TableModel::InfoRole] =
      itemJsonObject[TableModel::ROLE_NAMES.value(TableModel::InfoRole)].toString();
  values[TableModel::AmountRole] =
      itemJsonObject[TableModel::ROLE_NAMES.value(TableModel::AmountRole)].toInt();
  values[TableModel::FactorRole] =
      itemJsonObject[TableModel::ROLE_NAMES.value(TableModel::FactorRole)].toDouble();

  return values;
}

JsonParser::JsonParser() {}

QJsonArray JsonParser::extractItemArray(const QByteArray& jsonData, const QString& objectName) {
  QJsonDocument doc = QJsonDocument::fromJson(jsonData);
  QJsonArray itemArray;
  if (objectName.isEmpty()) {
    itemArray = doc.array();

  } else {
    QJsonObject rootObject = doc.object();
    itemArray              = rootObject.value(QString("items")).toArray();
  }

  return itemArray;
}