/*
    Copyright (c) 2007 Volker Krause <vkrause@kde.org>

    This library is free software; you can redistribute it and/or modify it
    under the terms of the GNU Library General Public License as published by
    the Free Software Foundation; either version 2 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 Library General Public
    License for more details.

    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to the
    Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
    02110-1301, USA.
*/

#include "subscriptionjob_p.h"

#include "job_p.h"

using namespace Akonadi;

class Akonadi::SubscriptionJobPrivate : public JobPrivate
{
public:
    SubscriptionJobPrivate(SubscriptionJob *parent)
        : JobPrivate(parent)
    {
    }

    void sendCommand(const QByteArray &cmd, const Collection::List &list)
    {
        mTag = newTag();
        QByteArray line = mTag + ' ' + cmd;
        foreach (const Collection &col, list) {
            line += ' ' + QByteArray::number(col.id());
        }
        line += '\n';
        writeData(line);
        newTag(); // prevent automatic response handling
    }

    void sendNextCommand()
    {
        Q_Q(SubscriptionJob);

        QByteArray cmd;
        if (!mSub.isEmpty()) {
            sendCommand("SUBSCRIBE", mSub);
            mSub.clear();
        } else if (!mUnsub.isEmpty()) {
            sendCommand("UNSUBSCRIBE", mUnsub);
            mUnsub.clear();
        } else {
            q->emitResult();
        }
    }

    Q_DECLARE_PUBLIC(SubscriptionJob)

    QByteArray mTag;
    Collection::List mSub, mUnsub;
};

SubscriptionJob::SubscriptionJob(QObject *parent)
    : Job(new SubscriptionJobPrivate(this), parent)
{
}

SubscriptionJob::~SubscriptionJob()
{
}

void SubscriptionJob::subscribe(const Collection::List &list)
{
    Q_D(SubscriptionJob);

    d->mSub = list;
}

void SubscriptionJob::unsubscribe(const Collection::List &list)
{
    Q_D(SubscriptionJob);

    d->mUnsub = list;
}

void SubscriptionJob::doStart()
{
    Q_D(SubscriptionJob);

    d->sendNextCommand();
}

void SubscriptionJob::doHandleResponse(const QByteArray &_tag, const QByteArray &data)
{
    Q_D(SubscriptionJob);

    if (_tag == d->mTag) {
        if (data.startsWith("OK")) {     //krazy:exclude=strings
            d->sendNextCommand();
        } else {
            setError(Unknown);
            setErrorText(QString::fromUtf8(data));
            emitResult();
        }
        return;
    }
}

#include "moc_subscriptionjob_p.cpp"