/*
 * Bittorrent Client using Qt and libtorrent.
 * Copyright (C) 2013  Nick Tiskov <daymansmail@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 2
 * 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 * In addition, as a special exception, the copyright holders give permission to
 * link this program with the OpenSSL project's "OpenSSL" library (or with
 * modified versions of it that use the same license as the "OpenSSL" library),
 * and distribute the linked executables. You must obey the GNU General Public
 * License in all respects for all of the code used other than "OpenSSL".  If you
 * modify file(s), you may extend this exception to your version of the file(s),
 * but you are not obligated to do so. If you do not wish to do so, delete this
 * exception statement from your version.
 */

#pragma once

#include <QSortFilterProxyModel>

#include "base/settingvalue.h"
#include "base/torrentfilter.h"
#include "base/utils/compare.h"

namespace BitTorrent
{
    class InfoHash;
}

class TransferListSortModel final : public QSortFilterProxyModel
{
    Q_OBJECT
    Q_DISABLE_COPY_MOVE(TransferListSortModel)

public:
    explicit TransferListSortModel(QObject *parent = nullptr);

    void sort(int column, Qt::SortOrder order = Qt::AscendingOrder) override;

    void setStatusFilter(TorrentFilter::Type filter);
    void setCategoryFilter(const QString &category);
    void disableCategoryFilter();
    void setTagFilter(const QString &tag);
    void disableTagFilter();
    void setTrackerFilter(const QSet<BitTorrent::TorrentID> &torrentIDs);
    void disableTrackerFilter();

private:
    int compare(const QModelIndex &left, const QModelIndex &right) const;

    bool lessThan(const QModelIndex &left, const QModelIndex &right) const override;
    bool filterAcceptsRow(int sourceRow, const QModelIndex &sourceParent) const override;
    bool matchFilter(int sourceRow, const QModelIndex &sourceParent) const;

    TorrentFilter m_filter;
    CachedSettingValue<int> m_subSortColumn;
    CachedSettingValue<int> m_subSortOrder;
    int m_lastSortColumn = -1;
    int m_lastSortOrder = 0;

    Utils::Compare::NaturalCompare<Qt::CaseInsensitive> m_naturalCompare;
};