/***************************************************************************
 *   Copyright (C) 2008 by Joris Guisson and Ivan Vasic                    *
 *   joris.guisson@gmail.com                                               *
 *   ivasic@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.          *
 ***************************************************************************/

#include <KLocalizedString>
#include <QIcon>

#include <util/log.h>
#include <util/error.h>
#include <upnp/upnprouter.h>
#include "routermodel.h"

using namespace bt;

namespace kt
{

    RouterModel::RouterModel(QObject* parent)
        : QAbstractTableModel(parent)
    {
    }


    RouterModel::~RouterModel()
    {
    }

    void RouterModel::addRouter(bt::UPnPRouter* r)
    {
        routers.append(r);
        insertRow(routers.count() - 1);
    }

    int RouterModel::rowCount(const QModelIndex& parent) const
    {
        if (!parent.isValid())
            return routers.count();
        else
            return 0;
    }

    int RouterModel::columnCount(const QModelIndex& parent) const
    {
        if (!parent.isValid())
            return 2;
        else
            return 0;
    }

    QVariant RouterModel::headerData(int section, Qt::Orientation orientation, int role) const
    {
        if (role != Qt::DisplayRole || orientation != Qt::Horizontal)
            return QVariant();

        switch (section)
        {
        case 0: return i18n("Device");
        case 1: return i18n("Ports Forwarded");
        default: return QVariant();
        }
    }

    bt::UPnPRouter* RouterModel::routerForIndex(const QModelIndex& index)
    {
        if (!index.isValid())
            return 0;
        else
            return routers.at(index.row());
    }

    QVariant RouterModel::data(const QModelIndex& index, int role) const
    {
        if (!index.isValid())
            return QVariant();

        const bt::UPnPRouter* r = routers.at(index.row());
        if (role == Qt::DisplayRole)
        {
            switch (index.column())
            {
            case 0: return r->getDescription().friendlyName;
            case 1: if (!r->getError().isEmpty())
                    return r->getError();
                else
                    return ports(r);
            }
        }
        else if (role == Qt::DecorationRole)
        {
            if (index.column() == 0)
                return QIcon::fromTheme(QStringLiteral("modem"));
            else if (index.column() == 1 && !r->getError().isEmpty())
                return QIcon::fromTheme(QStringLiteral("dialog-error"));
        }
        else if (role == Qt::ToolTipRole)
        {
            if (index.column() == 0)
            {
                const bt::UPnPDeviceDescription& d = r->getDescription();
                return i18n(
                           "Model Name: <b>%1</b><br/>"
                           "Manufacturer: <b>%2</b><br/>"
                           "Model Description: <b>%3</b><br/>", d.modelName, d.manufacturer, d.modelDescription);
            }
            else if (index.column() == 1 && !r->getError().isEmpty())
                return r->getError();
        }

        return QVariant();
    }

    bool RouterModel::removeRows(int row, int count, const QModelIndex& parent)
    {
        Q_UNUSED(parent);
        beginRemoveRows(QModelIndex(), row, row + count - 1);
        endRemoveRows();
        return true;
    }

    bool RouterModel::insertRows(int row, int count, const QModelIndex& parent)
    {
        Q_UNUSED(parent);
        beginInsertRows(QModelIndex(), row, row + count - 1);
        endInsertRows();
        return true;
    }

    class PortsVisitor : public bt::UPnPRouter::Visitor
    {
    public:
        ~PortsVisitor() override {}

        void forwarding(const net::Port& port, bool pending, const bt::UPnPService* service) override
        {
            Q_UNUSED(service);
            if (!pending)
            {
                QString ret = QString::number(port.number) + QStringLiteral(" (");
                QString prot = (port.proto == net::UDP ? QStringLiteral("UDP") : QStringLiteral("TCP"));
                ret +=  prot + QStringLiteral(")");
                ports.append(ret);
            }
        }

        QString result()
        {
            return ports.join(QStringLiteral(", "));
        }

        QStringList ports;
    };

    QString RouterModel::ports(const bt::UPnPRouter* r) const
    {
        PortsVisitor pv;
        r->visit(&pv);
        return pv.result();
    }

    void RouterModel::update()
    {
        emit dataChanged(index(0, 0), index(rowCount(QModelIndex()) - 1, columnCount(QModelIndex()) - 1));
    }

    void RouterModel::forward(const net::Port& port)
    {
        try
        {
            for (bt::UPnPRouter* r : qAsConst(routers))
                r->forward(port);
        }
        catch (bt::Error& e)
        {
            Out(SYS_PNP | LOG_DEBUG) << "Error : " << e.toString() << endl;
        }
    }

    void RouterModel::undoForward(const net::Port& port, bt::WaitJob* wjob)
    {
        try
        {
            for (bt::UPnPRouter* r : qAsConst(routers))
                r->undoForward(port, wjob);
        }
        catch (Error& e)
        {
            Out(SYS_PNP | LOG_DEBUG) << "Error : " << e.toString() << endl;
        }
    }
}
