/**************************************************************************
**
** This file is part of Installer Framework
**
** Copyright (c) 2011-2012 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
**
** GNU Lesser General Public License Usage
**
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this file.
** Please review the following information to ensure the GNU Lesser General
** Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** Other Usage
**
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
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**************************************************************************/

#include "updateagent.h"

#include <common/binaryformatenginehandler.h>
#include <common/binaryformat.h>
#include <common/errors.h>
#include <component.h>
#include <packagemanagercore.h>
#include <updatesettings.h>

#include <QtCore/QDateTime>
#include <QtCore/QTimer>

using namespace QInstaller;
using QInstallerCreator::ComponentIndex;
using QInstallerCreator::BinaryFormatEngineHandler;

class UpdateAgent::Private
{
public:
    Private(UpdateAgent *qq)
        : q(qq)
    {
        connect(&checkTimer, SIGNAL(timeout()), q, SLOT(maybeCheck()));
        checkTimer.start(1000);
    }

private:
    QTimer checkTimer;
    UpdateAgent *const q;

public:
    void maybeCheck()
    {
        checkTimer.stop();

        UpdateSettings settings;
        try {
            if (settings.updateInterval() > 0
                && settings.lastCheck().secsTo(QDateTime::currentDateTime()) >= settings.updateInterval()) {
                    // update the time we last checked for updates
                    settings.setLastCheck(QDateTime::currentDateTime());

                    QScopedPointer<BinaryFormatEngineHandler> handler;
                    handler.reset(new BinaryFormatEngineHandler(ComponentIndex()));
                    handler->setComponentIndex(QInstallerCreator::ComponentIndex());

                    PackageManagerCore core(QInstaller::MagicUpdaterMarker);
                    core.setTemporaryRepositories(settings.repositories());
                    if (!core.fetchRemotePackagesTree())
                        throw Error(tr("Software Update failed."));
                    settings.setLastResult(tr("Software Update run successfully."));

                    QList<Component*> components = core.updaterComponents();
                    // no updates available
                    if (components.isEmpty())
                        return;
                    emit q->updatesAvailable();
            }
        } catch (...) {
            settings.setLastResult(tr("Software Update failed."));
            return;
        }
        checkTimer.start();
    }
};

UpdateAgent::UpdateAgent(QObject *parent)
    : QObject(parent),
      d(new Private(this))
{
}

UpdateAgent::~UpdateAgent()
{
    delete d;
}

#include "moc_updateagent.cpp"