/***************************************************************************
 *   Copyright (C) 2008 by Ely Levy <elylevy@cs.huji.ac.il>                *
 *                                                                         *
 *   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.                                   *
 ***************************************************************************/

#include "epubdocument.h"

using namespace Epub;

namespace {

QString resourceUrl(const KUrl &baseUrl, const QString &u)
{
  KUrl newUrl(KUrl(baseUrl.directory(KUrl::AppendTrailingSlash)), u);
  QString newDir = newUrl.toLocalFile();
  newDir.remove(0, 1);
  return newDir;
}

}

EpubDocument::EpubDocument(const QString &fileName) : QTextDocument()
{
  mEpub = epub_open(qPrintable(fileName), 3);
}

bool EpubDocument::isValid()
{
  return (mEpub?true:false);
}

EpubDocument::~EpubDocument() {

  if (mEpub)
    epub_close(mEpub);

  epub_cleanup();
}

struct epub *EpubDocument::getEpub()
{
  return mEpub;
}

void EpubDocument::setCurrentSubDocument(const QString &doc)
{
  mCurrentSubDocument = KUrl::fromPath("/" + doc);
}

QVariant EpubDocument::loadResource(int type, const QUrl &name)
{
  int size;
  char *data;

  // Get the data from the epub file
  size = epub_get_data(mEpub, resourceUrl(mCurrentSubDocument, name.toString()).toUtf8(), &data);

  QVariant resource;

  if (data) {
    switch(type) {
    case QTextDocument::ImageResource:
      resource.setValue(QImage::fromData((unsigned char *)data, size));
      break;

    default:
      resource.setValue(QString::fromUtf8(data));
      break;
    }

    free(data);
  }

  // add to cache
  addResource(type, name, resource); 

  return resource;
}