/*
 * LCD Image Converter. Converts images and fonts for embedded applications.
 * Copyright (C) 2012 riuson
 * mailto: riuson@gmail.com
 *
 * 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 3 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, see <http://www.gnu.org/licenses/
 */

#include "recentlist.h"

#include <QFileInfo>
#include <QStringList>
#include <QStringListIterator>

#include "appsettings.h"

namespace Settings
{

RecentList::RecentList(QObject* parent) : QObject(parent)
{
  this->mFiles = new QStringList();

  // load from settings
  AppSettings appsett;
  QSettings& sett = appsett.get();
  int size = sett.beginReadArray("recent");

  for (int i = 0; i < size; i++) {
    sett.setArrayIndex(i);
    QString filename = sett.value("filename").toString();
    QFileInfo info(filename);

    if (info.exists()) {
      this->mFiles->append(filename);
    }
  }

  sett.endArray();
}

RecentList::~RecentList()
{
  // save to settings
  AppSettings appsett;
  QSettings& sett = appsett.get();
  sett.beginWriteArray("recent");
  QStringListIterator recentFilesIterator(*this->mFiles);
  int i = 0;

  while (recentFilesIterator.hasNext()) {
    sett.setArrayIndex(i++);
    sett.setValue("filename", recentFilesIterator.next());
  }

  sett.endArray();

  delete this->mFiles;
}

void RecentList::add(const QString& filename)
{
  if (this->mFiles->contains(filename)) {
    this->mFiles->removeOne(filename);
  }

  this->mFiles->insert(0, filename);

  if (this->mFiles->count() > MaxRecentFiles) {
    for (int i = this->mFiles->count() - 1; i >= 10; i--) {
      this->mFiles->removeAt(i);
    }
  }

  emit this->listChanged();
}

const QStringList* RecentList::files() const { return this->mFiles; }

} // namespace Settings