autoupdater.h

//------------------------------------------------------------------------------
// autoupdater.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) 2012 "Zalewa" <zalewapl@gmail.com>
//------------------------------------------------------------------------------
#ifndef DOOMSEEKER_UPDATER_AUTOUPDATER_H
#define DOOMSEEKER_UPDATER_AUTOUPDATER_H

#include "dptr.h"

#include <QDomDocument>
#include <QNetworkReply>
#include <QObject>
#include <QString>
#include <QUrl>

class UpdateChannel;
class UpdatePackage;

class AutoUpdater : public QObject
{
        Q_OBJECT

public:
        enum ErrorCode
        {
                EC_Ok = 0,
                EC_Aborted,
                EC_NullUpdateChannel,
                EC_UpdaterInfoDownloadProblem,
                EC_UpdaterInfoCannotParse,
                EC_UpdaterInfoMissingMainProgramNode,
                EC_MissingRevisionInfo,
                EC_MissingDownloadUrl,
                EC_InvalidDownloadUrl,
                EC_PackageDownloadProblem,
                EC_StorageDirCreateFailure,
                EC_PackageCantBeSaved,
                EC_ScriptCantBeSaved
        };

        static const QString PLUGIN_PREFIX;
        static const QString MAIN_PROGRAM_PACKAGE_NAME;
        static const QString QT_PACKAGE_NAME;
        static const QString WADSEEKER_PACKAGE_NAME;
        static const QString UPDATER_INFO_URL_BASE;

        static QString errorCodeToString(ErrorCode code);
        static QString updaterScriptPath();
        static QString updateStorageDirPath();


        AutoUpdater(QObject *pParent = nullptr);
        ~AutoUpdater() override;

        void abort();
        const UpdateChannel &channel() const;
        const QStringList &downloadedPackagesFilenames() const;
        ErrorCode errorCode() const;
        QString errorString() const;

        bool isRunning() const;

        QNetworkReply::NetworkError lastNetworkError() const;
        const QList<UpdatePackage> &newUpdatePackages() const;
        void setChannel(const UpdateChannel &updateChannel);
        void setIgnoreRevisions(const QMap<QString, QList<QString> > &packagesRevisions);
        void setRequireDownloadAndInstallConfirmation(bool b);
        void start();

public slots:
        void confirmDownloadAndInstall();

signals:
        void downloadAndInstallConfirmationRequested();
        void finished();

        void overallProgress(int current, int total, const QString &msg);
        void packageDownloadProgress(qint64 bytesReceived, qint64 bytesTotal);
        void statusMessage(const QString &message);

private:
        DPtr<AutoUpdater> d;

        QDomDocument adjustUpdaterScriptXml(const QByteArray &xmlSource);
        void dumpUpdatePackagesToLog(const QList<UpdatePackage> &packages);
        void emitOverallProgress(const QString &message);
        void emitStatusMessage(const QString &message);
        void finishWithError(ErrorCode code);
        QUrl mkVersionDataFileUrl();

        ErrorCode saveUpdaterScript();
        void startPackageDownload(const UpdatePackage &pkg);
        void startPackageScriptDownload(const UpdatePackage &pkg);
        void startNextPackageDownload();

private slots:
        void onPackageDownloadFinish();
        void onPackageDownloadReadyRead();
        void onPackageScriptDownloadFinish();
        void onUpdaterInfoDownloadFinish();
};

#endif