File indexing completed on 2024-05-12 04:42:52

 /*
     SPDX-FileCopyrightText: 2021 Volker Krause <vkrause@kde.org>
 
     SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #include "locationhistorymodel.h"
 #include "logging.h"
 
 #include <QDirIterator>
 #include <QJsonDocument>
 #include <QJsonObject>
 #include <QStandardPaths>
 
 using namespace KPublicTransport;
 
 static QString basePath()
 {
 #ifdef Q_OS_ANDROID
     constexpr auto dataLoc = QStandardPaths::AppDataLocation;
 #else
     constexpr auto dataLoc = QStandardPaths::GenericDataLocation;
 #endif
     return QStandardPaths::writableLocation(dataLoc) + QLatin1String("/org.kde.kpublictransport/location-history/");
 }
 
 LocationHistoryModel::LocationHistoryModel(QObject *parent)
     : QAbstractListModel(parent)
 {
     rescan();
 }
 
 LocationHistoryModel::~LocationHistoryModel() = default;
 
 int LocationHistoryModel::rowCount(const QModelIndex &parent) const
 {
     if (parent.isValid()) {
         return 0;
     }
     return m_locations.size();
 }
 
 QVariant LocationHistoryModel::data(const QModelIndex &index, int role) const
 {
     if (!checkIndex(index)) {
         return {};
     }
 
     switch (role) {
         case LocationRole: return m_locations[index.row()].loc;
         case LocationNameRole: return m_locations[index.row()].loc.name();
         case LastUsedRole: return m_locations[index.row()].lastUse;
         case UseCountRole: return m_locations[index.row()].useCount;
     }
 
     return {};
 }
 
 QHash<int, QByteArray> LocationHistoryModel::roleNames() const
 {
     auto r = QAbstractListModel::roleNames();
     r.insert(LocationRole, "location");
     r.insert(LocationNameRole, "locationName");
     r.insert(LastUsedRole, "lastUsed");
     r.insert(UseCountRole, "useCount");
     return r;
 }
 
 bool LocationHistoryModel::removeRow(int row, const QModelIndex& parent)
 {
     return QAbstractListModel::removeRow(row, parent);
 }
 
 bool LocationHistoryModel::removeRows(int row, int count, const QModelIndex &parent)
 {
     if (parent.isValid()) {
         return false;
     }
 
     const auto path = basePath();
     beginRemoveRows({}, row, row + count - 1);
     for (int i = row; i < row + count; ++i) {
         QFile::remove(path + m_locations[i].id);
     }
     m_locations.erase(m_locations.begin() + row, m_locations.begin() + row + count);
     endRemoveRows();
     return true;
 }
 
 void LocationHistoryModel::addLocation(const Location &loc)
 {
     for (auto it = m_locations.begin(); it != m_locations.end(); ++it) {
         if (Location::isSame((*it).loc, loc)) {
             (*it).loc = Location::merge((*it).loc, loc);
             (*it).lastUse = QDateTime::currentDateTime();
             (*it).useCount++;
             store(*it);
             const auto idx = index(std::distance(m_locations.begin(), it));
             Q_EMIT dataChanged(idx, idx);
             return;
         }
     }
 
     Data data;
     data.id = QUuid::createUuid().toString(QUuid::WithoutBraces);
     data.loc = loc;
     data.lastUse = QDateTime::currentDateTime();
     data.useCount = 1;
     store(data);
 
     beginInsertRows({}, m_locations.size(), m_locations.size());
     m_locations.push_back(std::move(data));
     endInsertRows();
 }
 
 void LocationHistoryModel::clear()
 {
     beginResetModel();
     const auto path = basePath();
     for (const auto &data : m_locations) {
         QFile::remove(path + data.id);
     }
     m_locations.clear();
     endResetModel();
 }
 
 void LocationHistoryModel::rescan()
 {
     beginResetModel();
     for(QDirIterator it(basePath(), QDir::Files); it.hasNext();) {
         QFile f(it.next());
         if (!f.open(QFile::ReadOnly)) {
             qCWarning(Log) << "Unable to read history entry:" << f.fileName() << f.errorString();
             continue;
         }
 
         const auto doc = QJsonDocument::fromJson(f.readAll());
         const auto obj = doc.object();
         Data data;
         data.id = it.fileInfo().baseName();
         data.loc = Location::fromJson(obj.value(QLatin1String("location")).toObject());
         data.lastUse = QDateTime::fromString(obj.value(QLatin1String("lastUse")).toString(), Qt::ISODate);
         data.useCount = obj.value(QLatin1String("useCount")).toInt();
         m_locations.push_back(std::move(data));
     }
     endResetModel();
 }
 
 void LocationHistoryModel::store(const LocationHistoryModel::Data &data) const
 {
     const auto path = basePath();
     QDir().mkpath(path);
 
     QFile f(path + data.id);
     if (!f.open(QFile::WriteOnly)) {
         qCWarning(Log) << "Unable to write history entry:" << f.fileName() << f.errorString();
         return;
     }
 
     QJsonObject obj;
     obj.insert(QLatin1String("location"), Location::toJson(data.loc));
     obj.insert(QLatin1String("lastUse"), data.lastUse.toString(Qt::ISODate));
     obj.insert(QLatin1String("useCount"), data.useCount);
     f.write(QJsonDocument(obj).toJson(QJsonDocument::Compact));
 }