/**************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Installer Framework.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, 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, Digia gives you certain additional
** rights.  These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
**************************************************************************/
#include "updateagent.h"

#include <binaryformatenginehandler.h>
#include <binaryformat.h>
#include <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);
                    // TODO: check what this should have done
                    //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"