MockLink.h

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#pragma once
 
#include "PX4/px4_custom_mode.h"
#include "LinkInterface.h"
#include "MAVLinkMessageType.h"
#include "QGCMAVLinkTypes.h"
#include "MockConfiguration.h"
#include "MockLinkMissionItemHandler.h"
 
#include <QtCore/QElapsedTimer>
#include <QtCore/QMap>
#include <QtCore/QMutex>
#include <QtCore/QSet>
#include <QtPositioning/QGeoCoordinate>
 
#include <array>
#include <atomic>
 
class MockLinkCamera;
class MockLinkFTP;
class MockLinkGimbal;
class MockLinkWorker;
class QThread;
 
class MockLink : public LinkInterface
{
    Q_OBJECT
    friend class MockLinkFTP;
 
public:
    explicit MockLink(SharedLinkConfigurationPtr &config, QObject *parent = nullptr);
    virtual ~MockLink();
 
    void run1HzTasks();
    void run10HzTasks();
    void run500HzTasks();
    void sendStatusTextMessages();
 
    bool shouldSendStatusText() const { return _sendStatusText; }
 
    bool isConnected() const final { return _connected; }
    void disconnect() final;
 
    Q_INVOKABLE void setCommLost(bool commLost) { _commLost = commLost; }
    Q_INVOKABLE void simulateConnectionRemoved();
 
    int vehicleId() const { return _vehicleSystemId; }
    MAV_AUTOPILOT getFirmwareType() const { return _firmwareType; }
 
    double vehicleLatitude() const { return _vehicleLatitude; }
    double vehicleLongitude() const { return _vehicleLongitude; }
    double vehicleAltitudeAMSL() const { return _vehicleAltitudeAMSL; }
 
    bool signingEnabled() const { return _signingEnabled; }
 
    void respondWithMavlinkMessage(const mavlink_message_t &msg);
 
    MockLinkFTP *mockLinkFTP() const;
 
    void setArmed(bool armed) { if (armed) _mavBaseMode |= MAV_MODE_FLAG_SAFETY_ARMED; else _mavBaseMode &= ~MAV_MODE_FLAG_SAFETY_ARMED; }
    bool armed() const { return (_mavBaseMode & MAV_MODE_FLAG_SAFETY_ARMED) != 0; }
 
    void setMissionItemFailureMode(MockLinkMissionItemHandler::FailureMode_t failureMode, MAV_MISSION_RESULT failureAckResult) const { _missionItemHandler->setFailureMode(failureMode, failureAckResult); }
 
    void sendUnexpectedMissionAck(MAV_MISSION_RESULT ackType) const { _missionItemHandler->sendUnexpectedMissionAck(ackType); }
 
    void sendUnexpectedMissionItem() const { _missionItemHandler->sendUnexpectedMissionItem(); }
 
    void sendUnexpectedMissionRequest() const { _missionItemHandler->sendUnexpectedMissionRequest(); }
 
    void sendUnexpectedCommandAck(MAV_CMD command, MAV_RESULT ackResult);
 
    void resetMissionItemHandler() const { _missionItemHandler->reset(); }
 
    QString logDownloadFile() const { return _logDownloadFilename; }
 
    void clearReceivedMavCommandCounts() { _receivedMavCommandCountMap.clear(); _receivedMavCommandByCompCountMap.clear(); _receivedRequestMessageByCompAndMsgCountMap.clear(); }
    int receivedMavCommandCount(MAV_CMD command) const { return _receivedMavCommandCountMap.value(command, 0); }
    int receivedMavCommandCount(MAV_CMD command, int compId) const { return _receivedMavCommandByCompCountMap.value(command).value(compId, 0); }
    int receivedRequestMessageCount(int compId, int messageId) const { return _receivedRequestMessageByCompAndMsgCountMap.value(compId).value(messageId, 0); }
    void clearReceivedRequestMessageCounts() { _receivedRequestMessageCountMap.clear(); _receivedRequestMessageByCompAndMsgCountMap.clear(); }
    int receivedRequestMessageCount(uint32_t messageId) const { return _receivedRequestMessageCountMap.value(messageId, 0); }
    void clearReceivedMavlinkMessageCounts() { _receivedMavlinkMessageCountMap.clear(); _hashCheckRequestCount = 0; _missionItemHandler->clearRequestListCounts(); }
    int receivedMavlinkMessageCount(uint32_t messageId) const { return _receivedMavlinkMessageCountMap.value(messageId, 0); }
    int receivedMissionRequestListCount(MAV_MISSION_TYPE type) const { return _missionItemHandler->requestListCount(type); }
 
    enum RequestMessageFailureMode_t {
        FailRequestMessageNone,
        FailRequestMessageCommandAcceptedMsgNotSent,
        FailRequestMessageCommandUnsupported,
        FailRequestMessageCommandNoResponse,
    };
    void setRequestMessageFailureMode(RequestMessageFailureMode_t failureMode) { _requestMessageFailureMode = failureMode; }
 
    void setRequestMessageNoResponse(uint32_t messageId, bool noResponse = true) {
        QMutexLocker locker(&_requestMessageNoResponseMutex);
        if (noResponse) {
            _requestMessageNoResponseIds.insert(messageId);
        } else {
            _requestMessageNoResponseIds.remove(messageId);
        }
    }
 
    enum ParamSetFailureMode_t {
        FailParamSetNone,               
        FailParamSetNoAck,              
        FailParamSetFirstAttemptNoAck,  
        FailParamSetParamError,         
    };
    void setParamSetFailureMode(ParamSetFailureMode_t mode) {
        _paramSetFailureMode = mode;
        _paramSetFailureFirstAttemptPending = (mode == FailParamSetFirstAttemptNoAck);
    }
 
    enum ParamRequestReadFailureMode_t {
        FailParamRequestReadNone,               
        FailParamRequestReadNoResponse,         
        FailParamRequestReadFirstAttemptNoResponse, 
        FailParamRequestReadParamError,         
    };
    void setParamRequestReadFailureMode(ParamRequestReadFailureMode_t mode) {
        _paramRequestReadFailureMode = mode;
        _paramRequestReadFailureFirstAttemptPending = (mode == FailParamRequestReadFirstAttemptNoResponse);
    }
 
    void setHashCheckNoResponse(bool noResponse) { _hashCheckNoResponse = noResponse; }
 
    int hashCheckRequestCount() const { return _hashCheckRequestCount; }
 
    void setMockParamValue(int componentId, const QString &paramName, float value);
 
    static MockLink *startPX4MockLink(bool sendStatusText, bool enableCamera, bool enableGimbal, MockConfiguration::FailureMode_t failureMode = MockConfiguration::FailNone);
    static MockLink *startGenericMockLink(bool sendStatusText, bool enableCamera, bool enableGimbal, MockConfiguration::FailureMode_t failureMode = MockConfiguration::FailNone);
    static MockLink *startNoInitialConnectMockLink(bool sendStatusText, bool enableCamera, bool enableGimbal, MockConfiguration::FailureMode_t failureMode = MockConfiguration::FailNone);
    static MockLink *startAPMArduCopterMockLink(bool sendStatusText, bool enableCamera, bool enableGimbal, MockConfiguration::FailureMode_t failureMode = MockConfiguration::FailNone);
    static MockLink *startAPMArduPlaneMockLink(bool sendStatusText, bool enableCamera, bool enableGimbal, MockConfiguration::FailureMode_t failureMode = MockConfiguration::FailNone);
    static MockLink *startAPMArduSubMockLink(bool sendStatusText, bool enableCamera, bool enableGimbal, MockConfiguration::FailureMode_t failureMode = MockConfiguration::FailNone);
    static MockLink *startAPMArduRoverMockLink(bool sendStatusText, bool enableCamera, bool enableGimbal, MockConfiguration::FailureMode_t failureMode = MockConfiguration::FailNone);
 
    // Special commands for testing Vehicle::sendMavCommandWithHandler
    static constexpr MAV_CMD MAV_CMD_MOCKLINK_ALWAYS_RESULT_ACCEPTED = MAV_CMD_USER_1;
    static constexpr MAV_CMD MAV_CMD_MOCKLINK_ALWAYS_RESULT_FAILED = MAV_CMD_USER_2;
    static constexpr MAV_CMD MAV_CMD_MOCKLINK_SECOND_ATTEMPT_RESULT_ACCEPTED = MAV_CMD_USER_3;
    static constexpr MAV_CMD MAV_CMD_MOCKLINK_SECOND_ATTEMPT_RESULT_FAILED = MAV_CMD_USER_4;
    static constexpr MAV_CMD MAV_CMD_MOCKLINK_NO_RESPONSE = MAV_CMD_USER_5;
    static constexpr MAV_CMD MAV_CMD_MOCKLINK_NO_RESPONSE_NO_RETRY = static_cast<MAV_CMD>(MAV_CMD_USER_5 + 1);
    static constexpr MAV_CMD MAV_CMD_MOCKLINK_RESULT_IN_PROGRESS_ACCEPTED = static_cast<MAV_CMD>(MAV_CMD_USER_5 + 2);
    static constexpr MAV_CMD MAV_CMD_MOCKLINK_RESULT_IN_PROGRESS_FAILED = static_cast<MAV_CMD>(MAV_CMD_USER_5 + 3);
    static constexpr MAV_CMD MAV_CMD_MOCKLINK_RESULT_IN_PROGRESS_NO_ACK = static_cast<MAV_CMD>(MAV_CMD_USER_5 + 4);
 
signals:
    void writeBytesQueuedSignal(const QByteArray &bytes);
    void highLatencyTransmissionEnabledChanged(bool highLatencyTransmissionEnabled);
 
private slots:
    void _writeBytes(const QByteArray &bytes) final;
    void _writeBytesQueued(const QByteArray &bytes);
 
private:
    typedef struct {
        const char *name;
        uint8_t standard_mode;
        uint32_t custom_mode;
        bool canBeSet;
        bool advanced;
    } FlightMode_t;
 
    bool _connect() final;
    bool _allocateMavlinkChannel() final;
    void _freeMavlinkChannel() final;
 
    uint8_t _getMavlinkAuxChannel() const { return _mavlinkAuxChannel; }
    bool _mavlinkAuxChannelIsSet() const;
    uint8_t _getMavlinkVehicleChannel() const { return _mavlinkVehicleChannel; }
    bool _mavlinkVehicleChannelIsSet() const;
 
    void _loadParams();
 
    float _floatUnionForParam(int componentId, const QString &paramName);
    uint32_t _computeParamHash(int componentId) const;
    void _setParamFloatUnionIntoMap(int componentId, const QString &paramName, float paramFloat);
 
    void _handleIncomingNSHBytes(const char *bytes, int cBytes);
    void _handleIncomingMavlinkBytes(const uint8_t *bytes, int cBytes);
    void _updateIncomingMessageCounts(const mavlink_message_t &msg);
    void _handleIncomingMavlinkMsg(const mavlink_message_t &msg);
    void _handleHeartBeat(const mavlink_message_t &msg);
    void _handleSetMode(const mavlink_message_t &msg);
    void _handleParamRequestList(const mavlink_message_t &msg);
    void _handleParamSet(const mavlink_message_t &msg);
    void _handleParamRequestRead(const mavlink_message_t &msg);
    void _handleFTP(const mavlink_message_t &msg);
    void _handleCommandLong(const mavlink_message_t &msg);
    void _handleInProgressCommandLong(const mavlink_command_long_t &request);
    void _handleCommandLongSetMessageInterval(const mavlink_command_long_t &request, bool &acccepted);
    void _handleManualControl(const mavlink_message_t &msg);
    void _handleRCChannelsOverride(const mavlink_message_t &msg);
    void _handlePreFlightCalibration(const mavlink_command_long_t &request);
    void _handleTakeoff(const mavlink_command_long_t &request);
    void _handleLogRequestList(const mavlink_message_t &msg);
    void _handleLogRequestData(const mavlink_message_t &msg);
    void _handleParamMapRC(const mavlink_message_t &msg);
    void _handleSetupSigning(const mavlink_message_t &msg);
    void _sendParamError(int componentId, const char *paramId, int16_t paramIndex, uint8_t errorCode);
    void _handleRequestMessage(const mavlink_command_long_t &request, bool &accepted, bool &noAck);
    void _handleRequestMessageAutopilotVersion(const mavlink_command_long_t &request, bool &accepted);
    void _handleRequestMessageDebug(const mavlink_command_long_t &request, bool &accepted, bool &noAck);
    void _handleRequestMessageAvailableModes(const mavlink_command_long_t &request, bool &accepted);
 
    void _sendHeartBeat();
    void _sendHighLatency2();
    void _sendHomePosition();
    void _sendGpsRawInt();
    void _sendGlobalPositionInt();
    void _sendExtendedSysState();
    void _sendVibration();
    void _sendSysStatus();
    void _sendBatteryStatus();
    void _sendNamedValueFloats();
    void _sendChunkedStatusText(uint16_t chunkId, bool missingChunks);
    void _sendStatusTextMessages();
    void _respondWithAutopilotVersion();
    void _sendRCChannels();
    void _sendADSBVehicles();
    void _sendGeneralMetaData();
    void _sendRemoteIDArmStatus();
    void _sendAvailableModesMonitor();
 
    void _paramRequestListWorker();
    void _logDownloadWorker();
    void _availableModesWorker();
    void _sendAvailableMode(uint8_t modeIndexOneBased);
    int  _availableModesCount() const;
    void _moveADSBVehicle(int vehicleIndex);
 
    static MockLink *_startMockLinkWorker(const QString &configName, MAV_AUTOPILOT firmwareType, MAV_TYPE vehicleType, bool sendStatusText, bool enableCamera, bool enableGimbal, MockConfiguration::FailureMode_t failureMode);
    static MockLink *_startMockLink(MockConfiguration *mockConfig);
 
    static QString _createRandomFile(uint32_t byteCount);
 
    QThread *_workerThread = nullptr;
    MockLinkWorker *_worker = nullptr;
 
    const MockConfiguration *_mockConfig = nullptr;
    const MAV_AUTOPILOT _firmwareType = MAV_AUTOPILOT_PX4;
    const MAV_TYPE _vehicleType = MAV_TYPE_QUADROTOR;
    const bool _sendStatusText = false;
    const bool _enableCamera = false;
    const bool _enableGimbal = false;
    const MockConfiguration::FailureMode_t _failureMode = MockConfiguration::FailNone;
    const uint8_t _vehicleSystemId = 0;
    const double _vehicleLatitude = 0.0;
    const double _vehicleLongitude = 0.0;
    // These are just set for reporting the fields in _respondWithAutopilotVersion()
    // and ensuring that the Vehicle reports the fields in Vehicle::firmwareBoardVendorId etc.
    // They do not control any mock simulation (and it is up to the Custom build to do that).
    const uint16_t _boardVendorId = 0;
    const uint16_t _boardProductId = 0;
    MockLinkMissionItemHandler *const _missionItemHandler = nullptr;
    MockLinkCamera *const _mockLinkCamera = nullptr;
    MockLinkGimbal *const _mockLinkGimbal = nullptr;
    MockLinkFTP *const _mockLinkFTP = nullptr;
 
    uint8_t _mavlinkAuxChannel = std::numeric_limits<uint8_t>::max();
    QMutex _mavlinkAuxMutex;
    uint8_t _mavlinkVehicleChannel = std::numeric_limits<uint8_t>::max();
 
    mavlink_signing_t _mockSigning{};
    mavlink_signing_streams_t _mockSigningStreams{};
 
    bool _connected = false;
    bool _inNSH = false;
 
    uint8_t _mavBaseMode = MAV_MODE_FLAG_MANUAL_INPUT_ENABLED | MAV_MODE_FLAG_CUSTOM_MODE_ENABLED;
    uint32_t _mavCustomMode = PX4CustomMode::MANUAL;
    uint8_t _mavState = MAV_STATE_STANDBY;
 
    QElapsedTimer _runningTime;
    static constexpr int32_t _batteryMaxTimeRemaining = 15 * 60;
    int8_t _battery1PctRemaining = 100;
    int32_t _battery1TimeRemaining = _batteryMaxTimeRemaining;
    MAV_BATTERY_CHARGE_STATE _battery1ChargeState = MAV_BATTERY_CHARGE_STATE_OK;
    int8_t _battery2PctRemaining = 100;
    int32_t _battery2TimeRemaining = _batteryMaxTimeRemaining;
    MAV_BATTERY_CHARGE_STATE _battery2ChargeState = MAV_BATTERY_CHARGE_STATE_OK;
 
    double _vehicleAltitudeAMSL = _defaultVehicleHomeAltitude;
    bool _commLost = false;
    bool _signingEnabled = false;
    bool _highLatencyTransmissionEnabled = true;
 
    int _sendHomePositionDelayCount = 10;               
    int _sendGPSPositionDelayCount = 100;               
 
    int _currentParamRequestListComponentIndex = -1;    
    int _currentParamRequestListParamIndex = -1;        
    QList<int> _paramRequestListComponentIds;           
    QStringList _paramRequestListParamNames;            
    QMutex _paramRequestListMutex;
 
    // Mavlink standard modes worker information
    int _availableModesWorkerNextModeIndex = 0;         
    QMutex _availableModesWorkerMutex;
    uint8_t _availableModesMonitorSeqNumber = 0;        
 
    QString _logDownloadFilename;                       
    uint32_t _logDownloadCurrentOffset = 0;             
    uint32_t _logDownloadBytesRemaining = 0;            
    QMutex _logDownloadMutex;
 
    RequestMessageFailureMode_t _requestMessageFailureMode = FailRequestMessageNone;
    mutable QMutex _requestMessageNoResponseMutex;
    QSet<uint32_t> _requestMessageNoResponseIds;
    ParamSetFailureMode_t _paramSetFailureMode = FailParamSetNone;
    bool _paramSetFailureFirstAttemptPending = false;
    ParamRequestReadFailureMode_t _paramRequestReadFailureMode = FailParamRequestReadNone;
    bool _paramRequestReadFailureFirstAttemptPending = false;
    bool _hashCheckNoResponse = false;
    int _hashCheckRequestCount = 0;
    bool _paramRequestListHashCheckSent = false;
 
    struct RCChannelOverride {
        enum class State { Ignore, Overridden, Released } state = State::Ignore;
        uint16_t value = 0;
    };
    static constexpr int kRcChannelOverrideChannelCount = 18;
    std::array<RCChannelOverride, kRcChannelOverrideChannelCount> _rcChannelOverrides;
 
    QMap<MAV_CMD, int> _receivedMavCommandCountMap;
    QMap<MAV_CMD, QMap<int, int>> _receivedMavCommandByCompCountMap;
    QMap<uint32_t, int> _receivedRequestMessageCountMap;
    QMap<int, QMap<int, int>> _receivedRequestMessageByCompAndMsgCountMap;
    QMap<uint32_t, int> _receivedMavlinkMessageCountMap;
    QMap<int, QMap<QString, QVariant>> _mapParamName2Value;
    QMap<int, QMap<QString, MAV_PARAM_TYPE>> _mapParamName2MavParamType;
 
    struct ADSBVehicle {
        QGeoCoordinate coordinate;
        double angle = 0.0;
        double altitude = 0.0;                      
    };
    QList<ADSBVehicle> _adsbVehicles;               
    QList<QGeoCoordinate> _adsbVehicleCoordinates;  
    static constexpr int _numberOfVehicles = 5;     
    double _adsbAngles[_numberOfVehicles]{};        
 
    static std::atomic<int> _nextVehicleSystemId;
 
    // Vehicle position is set close to default Gazebo vehicle location. This allows for multi-vehicle
    // testing of a gazebo vehicle and a mocklink vehicle
    static constexpr double _defaultVehicleLatitude = 47.397;
    static constexpr double _defaultVehicleLongitude = 8.5455;
    static constexpr double _defaultVehicleHomeAltitude = 488.056;
 
    static constexpr const char *_failParam = "COM_FLTMODE6";
 
    static constexpr uint8_t _vehicleComponentId = MAV_COMP_ID_AUTOPILOT1;
 
    static constexpr uint16_t _logDownloadLogId = 0;        
    static constexpr uint32_t _logDownloadFileSize = 1000;  
 
    static constexpr bool _mavlinkStarted = true;
 
    static QList<FlightMode_t> _availableFlightModes;
 
    std::atomic<bool> _disconnectedEmitted{false};
};