/*
  This file is part of the kcalcore library.

  Copyright (c) 2001 Cornelius Schumacher <schumacher@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.
*/
/**
  @file
  This file is part of the API for handling calendar data and
  defines the CalFormat base class.

  @brief
  Base class providing an interface to various calendar formats.

  @author Cornelius Schumacher \<schumacher@kde.org\>
*/

#include <config-kcalcore.h>
#include "calformat.h"
#include "exceptions.h"

#if defined(HAVE_UUID_UUID_H)
#include <uuid/uuid.h>
#else
#include <KRandom>
#include <QtCore/QDateTime>
#endif

using namespace KCalCore;

/**
  Private class that helps to provide binary compatibility between releases.
  @internal
*/
//@cond PRIVATE
class KCalCore::CalFormat::Private
{
public:
    Private() : mException(0) {}
    ~Private() {
        delete mException;
    }
    static QString mApplication; // Name of application, for creating unique ID strings
    static QString mProductId;   // PRODID string to write to calendar files
    QString mLoadedProductId;    // PRODID string loaded from calendar file
    Exception *mException;
};

QString CalFormat::Private::mApplication = QLatin1String("libkcal");
QString CalFormat::Private::mProductId =
    QLatin1String("-//K Desktop Environment//NONSGML libkcal 4.3//EN");
//@endcond

CalFormat::CalFormat()
    : d(new KCalCore::CalFormat::Private)
{
}

CalFormat::~CalFormat()
{
    clearException();
    delete d;
}

void CalFormat::clearException()
{
    delete d->mException;
    d->mException = 0;
}

void CalFormat::setException(Exception *exception)
{
    delete d->mException;
    d->mException = exception;
}

Exception *CalFormat::exception() const
{
    return d->mException;
}

void CalFormat::setApplication(const QString &application,
                               const QString &productID)
{
    Private::mApplication = application;
    Private::mProductId = productID;
}

const QString &CalFormat::application()
{
    return Private::mApplication;
}

const QString &CalFormat::productId()
{
    return Private::mProductId;
}

QString CalFormat::loadedProductId()
{
    return d->mLoadedProductId;
}

void CalFormat::setLoadedProductId(const QString &id)
{
    d->mLoadedProductId = id;
}

QString CalFormat::createUniqueId()
{
#if defined(HAVE_UUID_UUID_H)
    uuid_t uuid;
    char suuid[64];

    uuid_generate_random(uuid);
    uuid_unparse(uuid, suuid);
    return QString::fromLatin1(suuid);
#else
    int hashTime = QTime::currentTime().hour() +
                   QTime::currentTime().minute() + QTime::currentTime().second() +
                   QTime::currentTime().msec();
    QString uidStr = QString("%1-%2.%3").
                     arg(Private::mApplication).
                     arg(KRandom::random()).
                     arg(hashTime);
    return uidStr;
#endif
}

void CalFormat::virtual_hook(int id, void *data)
{
    Q_UNUSED(id);
    Q_UNUSED(data);
    Q_ASSERT(false);
}