/***************************************************************************
 *   Copyright (C) 2008 by Sebastian Trueg <trueg@kde.org>                 *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program 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 General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
 ***************************************************************************/

#include "nepomukmassupdatejob_p.h"

#include <klocale.h>

#include <nepomuk/tag.h>
#include <nepomuk/tools.h>


Nepomuk::MassUpdateJob::MassUpdateJob(QObject* parent)
    : KJob(parent),
      m_index(-1)
{
    setCapabilities(Killable|Suspendable);
    connect(&m_processTimer, SIGNAL(timeout()),
             this, SLOT(slotNext()));
}

Nepomuk::MassUpdateJob::~MassUpdateJob()
{
}

void Nepomuk::MassUpdateJob::setFiles(const KUrl::List& urls)
{
    m_resources.clear();
    foreach(const KUrl &url, urls){
        m_resources.append(Resource(url));
    }
    setTotalAmount(KJob::Files, m_resources.count());
}

void Nepomuk::MassUpdateJob::setResources(const QList<Nepomuk::Resource>& rl)
{
    m_resources = rl;
    setTotalAmount(KJob::Files, m_resources.count());
}

void Nepomuk::MassUpdateJob::setProperties(const QList<QPair<QUrl,Nepomuk::Variant> >& props)
{
    m_properties = props;
}

void Nepomuk::MassUpdateJob::start()
{
    if (m_index < 0){
        emit description(this, i18nc("@info:progress", "Changing annotations"));
        m_index = 0;
        m_processTimer.start();
    }
}


bool Nepomuk::MassUpdateJob::doKill()
{
    if (m_index > 0){
        m_processTimer.stop();
        m_index = -1;
        return true;
    } else {
        return false;
    }
}

bool Nepomuk::MassUpdateJob::doSuspend()
{
    m_processTimer.stop();
    return true;
}

bool Nepomuk::MassUpdateJob::doResume()
{
    if (m_index > 0){
        m_processTimer.start();
        return true;
    } else {
        return false;
    }
}

void Nepomuk::MassUpdateJob::slotNext()
{
    if (!isSuspended()) {
        if (m_index < m_resources.count()){
            Nepomuk::Resource& res = m_resources[m_index];
            for (int i = 0; i < m_properties.count(); ++i){
                res.setProperty(m_properties[i].first, m_properties[i].second);
            }
            ++m_index;
            setProcessedAmount(KJob::Files, m_index);
        } else if (m_index >= m_resources.count()) {
            m_index = -1;
            m_processTimer.stop();
            emitResult();
        }
    }
}

Nepomuk::MassUpdateJob* Nepomuk::MassUpdateJob::tagResources(const QList<Nepomuk::Resource>& rl,
                                                             const QList<Nepomuk::Tag>& tags)
{
    Nepomuk::MassUpdateJob* job = new Nepomuk::MassUpdateJob();
    job->setResources(rl);
    job->setProperties(QList<QPair<QUrl,Nepomuk::Variant> >() <<
                       qMakePair(QUrl(Nepomuk::Resource::tagUri()),
                       Nepomuk::Variant(convertResourceList<Tag>(tags))));
    return job;
}

Nepomuk::MassUpdateJob* Nepomuk::MassUpdateJob::rateResources(const QList<Nepomuk::Resource>& rl,
                                                              unsigned int rating)
{
    Nepomuk::MassUpdateJob* job = new Nepomuk::MassUpdateJob();
    job->setResources(rl);
    job->setProperties(QList<QPair<QUrl,Nepomuk::Variant> >() <<
                       qMakePair(QUrl(Nepomuk::Resource::ratingUri()),
                       Nepomuk::Variant(rating)));
    return job;
}

Nepomuk::MassUpdateJob* Nepomuk::MassUpdateJob::commentResources(const QList<Nepomuk::Resource>& rl,
                                                                 const QString& comment)
{
    Nepomuk::MassUpdateJob* job = new Nepomuk::MassUpdateJob();
    job->setResources(rl);
    job->setProperties(QList<QPair<QUrl,Nepomuk::Variant> >() <<
                       qMakePair(QUrl(Nepomuk::Resource::descriptionUri()),
                       Nepomuk::Variant(comment)));
    return job;
}

#include "nepomukmassupdatejob_p.moc"