AirplaneFlightDetector.h

/***************************************************************************
 *   Copyright (C) 2026 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 "flightlog/FlightDetector.h"
 
using namespace Qt::Literals::StringLiterals;
 
namespace Flightlog {

class AirplaneFlightDetector : public FlightDetector
{
    Q_OBJECT
 
public:
    explicit AirplaneFlightDetector(QObject* parent = nullptr);

    ~AirplaneFlightDetector() override = default;
 
    [[nodiscard]] auto detectionState() const -> DetectionState override { return m_detectionState; }
 
    void processPositionUpdate(const Positioning::PositionInfo& info) override;
 
    void endFlight() override;
 
    void resetDetection() override;
 
private:
    Q_DISABLE_COPY_MOVE(AirplaneFlightDetector)
 
    DetectionState m_detectionState {Idle};
 
    // Pending data accumulated during TakeoffPhase / InFlight / LandingPhase
    QString m_pendingDepartureICAO;
    QGeoCoordinate m_pendingDepartureCoordinate;
    QDateTime m_pendingStartTime;
    Units::Distance m_pendingDepartureElevation;
 
    // Pending data accumulated during LandingPhase
    QDateTime m_landingPhaseEntryTime;
    int m_landingCount {0};
 
    // When sustained low ground speed near the ground (terrain AGL) was
    // first observed during InFlight, for outlanding detection away from
    // any airfield. Invalid whenever that condition isn't currently met.
    QDateTime m_lowSpeedEntryTime;
 
    // Detection thresholds
    static constexpr double defaultTakeoffSpeedKMH = 50.0;     
    static constexpr double airfieldProximityM = 5000.0;        
    static constexpr double altitudeGainFT = 200.0;             
    static constexpr double landingAltitudeAGLFT = 100.0;       
    static constexpr double maxTakeoffAltitudeAGLFT = 500.0;    
    static constexpr double takeoffAbortSpeedFactor = 0.5;      
    static constexpr double maxFlightDurationH = 18.0;          
    static constexpr qint64 takeoffConfirmTimeoutS = 60;        
    static constexpr qint64 landingConfirmTimeoutS = 60;        
 
    // Helpers
    [[nodiscard]] auto aircraftMinimumSpeed() const -> Units::Speed;
    void clearPendingState();   
};
 
} // namespace Flightlog