/***************************************************************************
 *   Copyright © 2012 Aleix Pol Gonzalez <aleixpol@blue-systems.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) version 3 or any later version        *
 *   accepted by the membership of KDE e.V. (or its successor approved     *
 *   by the membership of KDE e.V.), which shall act as a proxy            *
 *   defined in Section 14 of version 3 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 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/>. *
 ***************************************************************************/

#ifndef APPLICATIONADDONSMODEL_H
#define APPLICATIONADDONSMODEL_H

#include <QAbstractListModel>
#include <resources/PackageState.h>
#include "Transaction/AddonList.h"

#include "discovercommon_export.h"

class Transaction;
class AbstractResource;

class DISCOVERCOMMON_EXPORT ApplicationAddonsModel : public QAbstractListModel
{
    Q_OBJECT
    Q_PROPERTY(AbstractResource* application READ application WRITE setApplication NOTIFY applicationChanged)
    Q_PROPERTY(bool hasChanges READ hasChanges NOTIFY stateChanged)
    Q_PROPERTY(bool isEmpty READ isEmpty NOTIFY applicationChanged)
    public:
        enum Roles {
            PackageNameRole = Qt::UserRole
        };

        explicit ApplicationAddonsModel(QObject* parent = nullptr);
        
        AbstractResource* application() const;
        void setApplication(AbstractResource* app);
        bool hasChanges() const;
        
        QVariant data(const QModelIndex& index, int role = Qt::DisplayRole) const override;
        int rowCount(const QModelIndex& parent = QModelIndex()) const override;
        QHash<int, QByteArray> roleNames() const override;
        bool isEmpty() const;

    public Q_SLOTS:
        void discardChanges();
        void applyChanges();
        void changeState(const QString& packageName, bool installed);

    Q_SIGNALS:
        void stateChanged();
        void applicationChanged();

    private:
        void transactionOver(Transaction* t);
        void resetState();

        AbstractResource* m_app;
        QList<PackageState> m_initial;
        AddonList m_state;
};

#endif // APPLICATIONADDONSMODEL_H
