TrafficDataSource_File.h

/***************************************************************************
 *   Copyright (C) 2021-2024 by Stefan Kebekus                             *
 *   stefan.kebekus@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, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/
 
#pragma once
 
#include <QFile>
#include <QTextStream>
 
#include "traffic/TrafficDataSource_Abstract.h"
 
using namespace Qt::Literals::StringLiterals;
 
 
namespace Traffic {

class TrafficDataSource_File : public TrafficDataSource_Abstract {
    Q_OBJECT
 
public:
    TrafficDataSource_File(bool isCanonical, const QString& fileName, QObject* parent);
 
    // Standard destructor
    ~TrafficDataSource_File() override = default;

    static auto containsFLARMSimulationData(const QString& fileName) -> bool;

    [[nodiscard]] QString dataFormat() const override { return u"FLARM/NMEA"_s; }

    [[nodiscard]] QString icon() const override { return u"/icons/material/ic_file_download.svg"_s; }

    [[nodiscard]] QString sourceName() const override
    {
        return tr("Simulator file %1").arg(simulatorFile.fileName());
    }
 
public slots:
    void connectToTrafficReceiver() override;

    void disconnectFromTrafficReceiver() override;
 
private slots:
    // Read one line from the simulator file's text stream and passes the string
    // on to processFLARMMessage.  Sets up a timer to read the next line in due
    // time.
    void readFromSimulatorStream();
 
    // Update the properties "errorString" and "connectivityStatus".
    void updateProperties();
 
private:
    Q_DISABLE_COPY_MOVE(TrafficDataSource_File)
 
    QTextStream textStream;
 
    // Simulator related members
    QFile simulatorFile;
    QTextStream simulatorTextStream;
    QTimer simulatorTimer;
    int lastTime {0};
    QString lastPayload;
    QString buffer;
};
 
} // namespace Traffic