ip2cupdater.h

//------------------------------------------------------------------------------
// ip2cupdater.h
//------------------------------------------------------------------------------
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
// 02110-1301  USA
//
//------------------------------------------------------------------------------
// Copyright (C) 2009 Braden "Blzut3" Obrzut <admin@maniacsvault.net>
//------------------------------------------------------------------------------
#ifndef __IP2CUPDATER_H__
#define __IP2CUPDATER_H__

#include <QByteArray>
#include <QNetworkReply>
#include <QObject>

class IP2CUpdater : public QObject
{
        Q_OBJECT

public:
        enum UpdateStatus
        {
                UpToDate,
                UpdateNeeded,
                UpdateCheckError
        };

        IP2CUpdater(QObject *parent = nullptr);
        ~IP2CUpdater() override;

        void downloadDatabase(const QString &savePath);
        const QByteArray &downloadedData();

        bool getRollbackData(const QString &databasePath);

        bool hasDownloadedData() const
        {
                return !retrievedData.isEmpty();
        }
        bool hasRollbackData() const
        {
                return !rollbackData.isEmpty();
        }

        bool isWorking() const;

        void needsUpdate(const QString &filePath);


        bool rollback(const QString &savePath);

        bool saveDownloadedData(const QString &savePath);

signals:
        void databaseDownloadFinished(const QByteArray &downloadedData);
        void downloadProgress(qint64 value, qint64 max);
        void updateNeeded(int status);

private:
        static const QUrl dbChecksumUrl();
        static const QUrl dbDownloadUrl();

        QNetworkAccessManager *pNetworkAccessManager;
        QNetworkReply *pCurrentNetworkReply;

        QString lastAsyncCallPath;
        QByteArray retrievedData;
        QByteArray rollbackData;

        void abort();
        void get(const QUrl &url, const char *finishedSlot);
        bool handleRedirect(QNetworkReply &reply, const char *finishedSlot);
        bool save(const QByteArray &saveWhat, const QString &savePath);

private slots:
        void checksumDownloadFinished();
        void downloadFinished();
};

#endif