/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

*

* This program is free software: you can redistribute it and/or modify

* it under the terms of the GNU Lesser General Public License as published by

* the Free Software Foundation, version 2.1 of the License.

* 

* 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 Lesser General Public License for more details.

*

* You should have received a copy of the GNU Lesser General Public License

* along with this program.  If not, 

* see "http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html/".

*

*/

#include <QString>

#include <QXmlStreamWriter>

#include <QIODevice>

#include <QDebug>

#include "xbelwriter.h"

#include "BookmarksManager.h"

#include "BookmarkFav.h"

#include "BookmarkResults.h"

#include "TagResults.h"

XbelWriter::XbelWriter(BookmarksManager *bmgr)

    : m_bmgr(bmgr), m_xml(new QXmlStreamWriter())

{

}

XbelWriter::~XbelWriter() {

    if(m_xml) delete m_xml;

}

bool XbelWriter::writeFile(QIODevice *device)

{

    bool retVal = false;

    if(device && m_bmgr) {

        m_xml->setDevice(device);

        m_xml->setAutoFormatting(true);

        m_xml->writeStartDocument();

        m_xml->writeDTD("<!DOCTYPE xbel>");

        m_xml->writeStartElement("xbel");

        m_xml->writeAttribute("version", "1.0");

        BookmarkResults *bookmarks = m_bmgr->findAllBookmarks();

        if(bookmarks) {

            while (BookmarkFav *bm = bookmarks->nextBookmark()) {

                if(!bm->url().isEmpty())

                    writeBookmark(bm);

                delete bm;

                bm = NULL;

            }

            delete bookmarks;

        }

        m_xml->writeEndElement(); // xbel

        m_xml->writeEndDocument();

        retVal = true;

    }

    return retVal;

}

void XbelWriter::writeBookmark(BookmarkFav *bm)  

{

    m_xml->writeStartElement("bookmark");

    m_xml->writeAttribute("href", bm->url());

    m_xml->writeTextElement("title", bm->title());

    writeTags(bm->id());

    m_xml->writeEndElement(); // bookmark

}

void XbelWriter::writeTags(int bmId) 

{

    if(bmId > 0) {

        TagResults * tr = m_bmgr->findTagsByBookmark(bmId);

        if(tr) {

            m_xml->writeStartElement("info");

            m_xml->writeStartElement("metadata");

            m_xml->writeAttribute("owner", "http://www.nokia.com");

            m_xml->writeStartElement("tags");

            try {

                while(QString * tag = tr->nextTag()) {

                    m_xml->writeTextElement("tag", *tag);

                    delete tag;

                    tag = NULL;

                }

            } catch(...) {

                qDebug() << "Exception Thrown while writing tags.";

            }

            m_xml->writeEndElement(); // tags

            m_xml->writeEndElement(); // metadata

            m_xml->writeEndElement(); // info

            delete tr;

        }

    }

}