/*===================================================================
QGroundControl Open Source Ground Control Station

(c) 2009, 2010 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>

This file is part of the QGROUNDCONTROL project

    QGROUNDCONTROL 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.

    QGROUNDCONTROL 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 QGROUNDCONTROL. If not, see <http://www.gnu.org/licenses/>.

======================================================================*/

#include <QStringList>
#include <QDebug>

#include "MissionItem.h"
#include "FirmwarePluginManager.h"
#include "QGCApplication.h"
#include "JsonHelper.h"

QGC_LOGGING_CATEGORY(MissionItemLog, "MissionItemLog")

const double MissionItem::defaultAltitude =             25.0;

FactMetaData* MissionItem::_altitudeMetaData =          NULL;
FactMetaData* MissionItem::_commandMetaData =           NULL;
FactMetaData* MissionItem::_defaultParamMetaData =      NULL;
FactMetaData* MissionItem::_frameMetaData =             NULL;
FactMetaData* MissionItem::_latitudeMetaData =          NULL;
FactMetaData* MissionItem::_longitudeMetaData =         NULL;

const char*  MissionItem::_itemType =               "missionItem";
const char*  MissionItem::_jsonTypeKey =            "type";
const char*  MissionItem::_jsonIdKey =              "id";
const char*  MissionItem::_jsonFrameKey =           "frame";
const char*  MissionItem::_jsonCommandKey =         "command";
const char*  MissionItem::_jsonParam1Key =          "param1";
const char*  MissionItem::_jsonParam2Key =          "param2";
const char*  MissionItem::_jsonParam3Key =          "param3";
const char*  MissionItem::_jsonParam4Key =          "param4";
const char*  MissionItem::_jsonAutoContinueKey =    "autoContinue";
const char*  MissionItem::_jsonCoordinateKey =      "coordinate";

struct EnumInfo_s {
    const char *    label;
    MAV_FRAME       frame;
};

static const struct EnumInfo_s _rgMavFrameInfo[] = {
{ "MAV_FRAME_GLOBAL",                   MAV_FRAME_GLOBAL },
{ "MAV_FRAME_LOCAL_NED",                MAV_FRAME_LOCAL_NED },
{ "MAV_FRAME_MISSION",                  MAV_FRAME_MISSION },
{ "MAV_FRAME_GLOBAL_RELATIVE_ALT",      MAV_FRAME_GLOBAL_RELATIVE_ALT },
{ "MAV_FRAME_LOCAL_ENU",                MAV_FRAME_LOCAL_ENU },
{ "MAV_FRAME_GLOBAL_INT",               MAV_FRAME_GLOBAL_INT },
{ "MAV_FRAME_GLOBAL_RELATIVE_ALT_INT",  MAV_FRAME_GLOBAL_RELATIVE_ALT_INT },
{ "MAV_FRAME_LOCAL_OFFSET_NED",         MAV_FRAME_LOCAL_OFFSET_NED },
{ "MAV_FRAME_BODY_NED",                 MAV_FRAME_BODY_NED },
{ "MAV_FRAME_BODY_OFFSET_NED",          MAV_FRAME_BODY_OFFSET_NED },
{ "MAV_FRAME_GLOBAL_TERRAIN_ALT",       MAV_FRAME_GLOBAL_TERRAIN_ALT },
{ "MAV_FRAME_GLOBAL_TERRAIN_ALT_INT",   MAV_FRAME_GLOBAL_TERRAIN_ALT_INT },
};

QDebug operator<<(QDebug dbg, const MissionItem& missionItem)
{
    QDebugStateSaver saver(dbg);
    dbg.nospace() << "MissionItem(" << missionItem.coordinate() << ")";
    
    return dbg;
}

QDebug operator<<(QDebug dbg, const MissionItem* missionItem)
{
    QDebugStateSaver saver(dbg);
    dbg.nospace() << "MissionItem(" << missionItem->coordinate() << ")";
    
    return dbg;
}

MissionItem::MissionItem(Vehicle* vehicle, QObject* parent)
    : QObject(parent)
    , _vehicle(vehicle)
    , _rawEdit(false)
    , _dirty(false)
    , _sequenceNumber(0)
    , _isCurrentItem(false)
    , _altDifference(0.0)
    , _altPercent(0.0)
    , _azimuth(0.0)
    , _distance(0.0)
    , _homePositionSpecialCase(false)
    , _showHomePosition(false)
    , _altitudeRelativeToHomeFact   (0, "Altitude is relative to home", FactMetaData::valueTypeUint32)
    , _autoContinueFact             (0, "AutoContinue",                 FactMetaData::valueTypeUint32)
    , _commandFact                  (0, "",                             FactMetaData::valueTypeUint32)
    , _frameFact                    (0, "",                             FactMetaData::valueTypeUint32)
    , _param1Fact                   (0, "Param1:",                      FactMetaData::valueTypeDouble)
    , _param2Fact                   (0, "Param2:",                      FactMetaData::valueTypeDouble)
    , _param3Fact                   (0, "Param3:",                      FactMetaData::valueTypeDouble)
    , _param4Fact                   (0, "Param4:",                      FactMetaData::valueTypeDouble)
    , _param5Fact                   (0, "Latitude:",                    FactMetaData::valueTypeDouble)
    , _param6Fact                   (0, "Longitude:",                   FactMetaData::valueTypeDouble)
    , _param7Fact                   (0, "Altitude:",                    FactMetaData::valueTypeDouble)
    , _supportedCommandFact         (0, "Command:",                     FactMetaData::valueTypeUint32)
    , _param1MetaData(FactMetaData::valueTypeDouble)
    , _param2MetaData(FactMetaData::valueTypeDouble)
    , _param3MetaData(FactMetaData::valueTypeDouble)
    , _param4MetaData(FactMetaData::valueTypeDouble)
    , _param5MetaData(FactMetaData::valueTypeDouble)
    , _param6MetaData(FactMetaData::valueTypeDouble)
    , _param7MetaData(FactMetaData::valueTypeDouble)
    , _syncingAltitudeRelativeToHomeAndFrame    (false)
    , _syncingHeadingDegreesAndParam4           (false)
    , _missionCommands(qgcApp()->toolbox()->missionCommands())
{
    // Need a good command and frame before we start passing signals around
    _commandFact.setRawValue(MAV_CMD_NAV_WAYPOINT);
    _frameFact.setRawValue(MAV_FRAME_GLOBAL_RELATIVE_ALT);
    _altitudeRelativeToHomeFact.setRawValue(true);

    _setupMetaData();
    _connectSignals();

    setAutoContinue(true);
    setDefaultsForCommand();
}

MissionItem::MissionItem(Vehicle*       vehicle,
                         int             sequenceNumber,
                         MAV_CMD         command,
                         MAV_FRAME       frame,
                         double          param1,
                         double          param2,
                         double          param3,
                         double          param4,
                         double          param5,
                         double          param6,
                         double          param7,
                         bool            autoContinue,
                         bool            isCurrentItem,
                         QObject*        parent)
    : QObject(parent)
    , _vehicle(vehicle)
    , _rawEdit(false)
    , _dirty(false)
    , _sequenceNumber(sequenceNumber)
    , _isCurrentItem(isCurrentItem)
    , _altDifference(0.0)
    , _altPercent(0.0)
    , _azimuth(0.0)
    , _distance(0.0)
    , _homePositionSpecialCase(false)
    , _showHomePosition(false)
    , _altitudeRelativeToHomeFact   (0, "Altitude is relative to home", FactMetaData::valueTypeUint32)
    , _commandFact                  (0, "",                             FactMetaData::valueTypeUint32)
    , _frameFact                    (0, "",                             FactMetaData::valueTypeUint32)
    , _param1Fact                   (0, "Param1:",                      FactMetaData::valueTypeDouble)
    , _param2Fact                   (0, "Param2:",                      FactMetaData::valueTypeDouble)
    , _param3Fact                   (0, "Param3:",                      FactMetaData::valueTypeDouble)
    , _param4Fact                   (0, "Param4:",                      FactMetaData::valueTypeDouble)
    , _param5Fact                   (0, "Lat/X:",                       FactMetaData::valueTypeDouble)
    , _param6Fact                   (0, "Lon/Y:",                       FactMetaData::valueTypeDouble)
    , _param7Fact                   (0, "Alt/Z:",                       FactMetaData::valueTypeDouble)
    , _supportedCommandFact         (0, "Command:",                     FactMetaData::valueTypeUint32)
    , _param1MetaData(FactMetaData::valueTypeDouble)
    , _param2MetaData(FactMetaData::valueTypeDouble)
    , _param3MetaData(FactMetaData::valueTypeDouble)
    , _param4MetaData(FactMetaData::valueTypeDouble)
    , _param5MetaData(FactMetaData::valueTypeDouble)
    , _param6MetaData(FactMetaData::valueTypeDouble)
    , _param7MetaData(FactMetaData::valueTypeDouble)
    , _syncingAltitudeRelativeToHomeAndFrame    (false)
    , _syncingHeadingDegreesAndParam4           (false)
    , _missionCommands(qgcApp()->toolbox()->missionCommands())
{
    // Need a good command and frame before we start passing signals around
    _commandFact.setRawValue(MAV_CMD_NAV_WAYPOINT);
    _frameFact.setRawValue(MAV_FRAME_GLOBAL_RELATIVE_ALT);
    _altitudeRelativeToHomeFact.setRawValue(true);

    _setupMetaData();
    _connectSignals();

    setCommand(command);
    setFrame(frame);
    setAutoContinue(autoContinue);

    _syncFrameToAltitudeRelativeToHome();

    _param1Fact.setRawValue(param1);
    _param2Fact.setRawValue(param2);
    _param3Fact.setRawValue(param3);
    _param4Fact.setRawValue(param4);
    _param5Fact.setRawValue(param5);
    _param6Fact.setRawValue(param6);
    _param7Fact.setRawValue(param7);
}

MissionItem::MissionItem(const MissionItem& other, QObject* parent)
    : QObject(parent)
    , _vehicle(NULL)
    , _rawEdit(false)
    , _dirty(false)
    , _sequenceNumber(0)
    , _isCurrentItem(false)
    , _altDifference(0.0)
    , _altPercent(0.0)
    , _azimuth(0.0)
    , _distance(0.0)
    , _homePositionSpecialCase(false)
    , _showHomePosition(false)
    , _altitudeRelativeToHomeFact   (0, "Altitude is relative to home", FactMetaData::valueTypeUint32)
    , _commandFact                  (0, "",                             FactMetaData::valueTypeUint32)
    , _frameFact                    (0, "",                             FactMetaData::valueTypeUint32)
    , _param1Fact                   (0, "Param1:",                      FactMetaData::valueTypeDouble)
    , _param2Fact                   (0, "Param2:",                      FactMetaData::valueTypeDouble)
    , _param3Fact                   (0, "Param3:",                      FactMetaData::valueTypeDouble)
    , _param4Fact                   (0, "Param4:",                      FactMetaData::valueTypeDouble)
    , _param5Fact                   (0, "Lat/X:",                       FactMetaData::valueTypeDouble)
    , _param6Fact                   (0, "Lon/Y:",                       FactMetaData::valueTypeDouble)
    , _param7Fact                   (0, "Alt/Z:",                       FactMetaData::valueTypeDouble)
    , _supportedCommandFact         (0, "Command:",                     FactMetaData::valueTypeUint32)
    , _param1MetaData(FactMetaData::valueTypeDouble)
    , _param2MetaData(FactMetaData::valueTypeDouble)
    , _param3MetaData(FactMetaData::valueTypeDouble)
    , _param4MetaData(FactMetaData::valueTypeDouble)
    , _syncingAltitudeRelativeToHomeAndFrame    (false)
    , _syncingHeadingDegreesAndParam4           (false)
    , _missionCommands(qgcApp()->toolbox()->missionCommands())
{
    // Need a good command and frame before we start passing signals around
    _commandFact.setRawValue(MAV_CMD_NAV_WAYPOINT);
    _frameFact.setRawValue(MAV_FRAME_GLOBAL_RELATIVE_ALT);
    _altitudeRelativeToHomeFact.setRawValue(true);

    _setupMetaData();
    _connectSignals();

    *this = other;
}

const MissionItem& MissionItem::operator=(const MissionItem& other)
{
    _vehicle = other._vehicle;

    setCommand(other.command());
    setFrame(other.frame());
    setRawEdit(other._rawEdit);
    setDirty(other._dirty);
    setSequenceNumber(other._sequenceNumber);
    setAutoContinue(other.autoContinue());
    setIsCurrentItem(other._isCurrentItem);
    setAltDifference(other._altDifference);
    setAltPercent(other._altPercent);
    setAzimuth(other._azimuth);
    setDistance(other._distance);
    setHomePositionSpecialCase(other._homePositionSpecialCase);
    setShowHomePosition(other._showHomePosition);

    _syncFrameToAltitudeRelativeToHome();

    _param1Fact.setRawValue(other._param1Fact.rawValue());
    _param2Fact.setRawValue(other._param2Fact.rawValue());
    _param3Fact.setRawValue(other._param3Fact.rawValue());
    _param4Fact.setRawValue(other._param4Fact.rawValue());
    _param5Fact.setRawValue(other._param5Fact.rawValue());
    _param6Fact.setRawValue(other._param6Fact.rawValue());
    _param7Fact.setRawValue(other._param7Fact.rawValue());

    return *this;
}

void MissionItem::_connectSignals(void)
{
    // Connect to change signals to track dirty state
    connect(&_param1Fact,   &Fact::valueChanged,                    this, &MissionItem::_setDirtyFromSignal);
    connect(&_param2Fact,   &Fact::valueChanged,                    this, &MissionItem::_setDirtyFromSignal);
    connect(&_param3Fact,   &Fact::valueChanged,                    this, &MissionItem::_setDirtyFromSignal);
    connect(&_param4Fact,   &Fact::valueChanged,                    this, &MissionItem::_setDirtyFromSignal);
    connect(&_param5Fact,   &Fact::valueChanged,                    this, &MissionItem::_setDirtyFromSignal);
    connect(&_param6Fact,   &Fact::valueChanged,                    this, &MissionItem::_setDirtyFromSignal);
    connect(&_param7Fact,   &Fact::valueChanged,                    this, &MissionItem::_setDirtyFromSignal);
    connect(&_frameFact,    &Fact::valueChanged,                    this, &MissionItem::_setDirtyFromSignal);
    connect(&_commandFact,  &Fact::valueChanged,                    this, &MissionItem::_setDirtyFromSignal);
    connect(this,           &MissionItem::sequenceNumberChanged,    this, &MissionItem::_setDirtyFromSignal);

    // Values from these facts must propogate back and forth between the real object storage
    connect(&_altitudeRelativeToHomeFact,   &Fact::valueChanged,        this, &MissionItem::_syncAltitudeRelativeToHomeToFrame);
    connect(this,                           &MissionItem::frameChanged, this, &MissionItem::_syncFrameToAltitudeRelativeToHome);

    // These are parameter coordinates, they must emit coordinateChanged signal
    connect(&_param5Fact, &Fact::valueChanged, this, &MissionItem::_sendCoordinateChanged);
    connect(&_param6Fact, &Fact::valueChanged, this, &MissionItem::_sendCoordinateChanged);
    connect(&_param7Fact, &Fact::valueChanged, this, &MissionItem::_sendCoordinateChanged);

    // The following changes may also change friendlyEditAllowed
    connect(&_autoContinueFact, &Fact::valueChanged,        this, &MissionItem::_sendFriendlyEditAllowedChanged);
    connect(&_commandFact,      &Fact::valueChanged,        this, &MissionItem::_sendFriendlyEditAllowedChanged);
    connect(&_frameFact,        &Fact::valueChanged,        this, &MissionItem::_sendFriendlyEditAllowedChanged);

    // When the command changes we need to set defaults. This must go out before the signals below so it must be registered first.
    connect(&_commandFact,  &Fact::valueChanged, this, &MissionItem::setDefaultsForCommand);

    // Whenever these properties change the ui model changes as well
    connect(this, &MissionItem::commandChanged, this, &MissionItem::_sendUiModelChanged);
    connect(this, &MissionItem::rawEditChanged, this, &MissionItem::_sendUiModelChanged);

    // These fact signals must alway signal out through MissionItem signals
    connect(&_commandFact,  &Fact::valueChanged, this, &MissionItem::_sendCommandChanged);
    connect(&_frameFact,    &Fact::valueChanged, this, &MissionItem::_sendFrameChanged);

}

void MissionItem::_setupMetaData(void)
{
    QStringList enumStrings;
    QVariantList enumValues;

    if (!_altitudeMetaData) {
        _altitudeMetaData = new FactMetaData(FactMetaData::valueTypeDouble);
        _altitudeMetaData->setRawUnits("meters");
        _altitudeMetaData->setDecimalPlaces(3);

        enumStrings.clear();
        enumValues.clear();
        foreach (const MAV_CMD command, _missionCommands->commandsIds()) {
            const MavCmdInfo* mavCmdInfo = _missionCommands->getMavCmdInfo(command, _vehicle);
            enumStrings.append(mavCmdInfo->rawName());
            enumValues.append(QVariant(mavCmdInfo->command()));
        }
        _commandMetaData = new FactMetaData(FactMetaData::valueTypeUint32);
        _commandMetaData->setEnumInfo(enumStrings, enumValues);

        _defaultParamMetaData = new FactMetaData(FactMetaData::valueTypeDouble);
        _defaultParamMetaData->setDecimalPlaces(7);

        enumStrings.clear();
        enumValues.clear();
        for (size_t i=0; i<sizeof(_rgMavFrameInfo)/sizeof(_rgMavFrameInfo[0]); i++) {
            const struct EnumInfo_s* mavFrameInfo = &_rgMavFrameInfo[i];

            enumStrings.append(mavFrameInfo->label);
            enumValues.append(QVariant(mavFrameInfo->frame));
        }
        _frameMetaData = new FactMetaData(FactMetaData::valueTypeUint32);
        _frameMetaData->setEnumInfo(enumStrings, enumValues);

        _latitudeMetaData = new FactMetaData(FactMetaData::valueTypeDouble);
        _latitudeMetaData->setRawUnits("deg");
        _latitudeMetaData->setDecimalPlaces(7);

        _longitudeMetaData = new FactMetaData(FactMetaData::valueTypeDouble);
        _longitudeMetaData->setRawUnits("deg");
        _longitudeMetaData->setDecimalPlaces(7);

    }

    _commandFact.setMetaData(_commandMetaData);
    _frameFact.setMetaData(_frameMetaData);
}

MissionItem::~MissionItem()
{    
}

void MissionItem::save(QJsonObject& json)
{
    json[_jsonTypeKey] = _itemType;
    json[_jsonIdKey] = sequenceNumber();
    json[_jsonFrameKey] = frame();
    json[_jsonCommandKey] = command();
    json[_jsonParam1Key] = param1();
    json[_jsonParam2Key] = param2();
    json[_jsonParam3Key] = param3();
    json[_jsonParam4Key] = param4();
    json[_jsonAutoContinueKey] = autoContinue();

    QJsonArray coordinateArray;
    coordinateArray << param5() << param6() << param7();
    json[_jsonCoordinateKey] = coordinateArray;
}

bool MissionItem::load(QTextStream &loadStream)
{
    const QStringList &wpParams = loadStream.readLine().split("\t");
    if (wpParams.size() == 12) {
        setSequenceNumber(wpParams[0].toInt());
        setIsCurrentItem(wpParams[1].toInt() == 1 ? true : false);
        setFrame((MAV_FRAME)wpParams[2].toInt());
        setCommand((MAV_CMD)wpParams[3].toInt());
        setParam1(wpParams[4].toDouble());
        setParam2(wpParams[5].toDouble());
        setParam3(wpParams[6].toDouble());
        setParam4(wpParams[7].toDouble());
        setParam5(wpParams[8].toDouble());
        setParam6(wpParams[9].toDouble());
        setParam7(wpParams[10].toDouble());
        setAutoContinue(wpParams[11].toInt() == 1 ? true : false);
        return true;
    }

    return false;
}

bool MissionItem::load(const QJsonObject& json, QString& errorString)
{
    QStringList requiredKeys;

    requiredKeys << _jsonTypeKey << _jsonIdKey << _jsonFrameKey << _jsonCommandKey <<
                    _jsonParam1Key << _jsonParam2Key << _jsonParam3Key << _jsonParam4Key <<
                    _jsonAutoContinueKey << _jsonCoordinateKey;
    if (!JsonHelper::validateRequiredKeys(json, requiredKeys, errorString)) {
        return false;
    }

    if (json[_jsonTypeKey] != _itemType) {
        errorString = QString("type found: %1 must be: %2").arg(json[_jsonTypeKey].toString()).arg(_itemType);
        return false;
    }

    QGeoCoordinate coordinate;
    if (!JsonHelper::toQGeoCoordinate(json[_jsonCoordinateKey], coordinate, true /* altitudeRequired */, errorString)) {
        return false;
    }
    setCoordinate(coordinate);

    setIsCurrentItem(false);
    setSequenceNumber(json[_jsonIdKey].toInt());
    setFrame((MAV_FRAME)json[_jsonFrameKey].toInt());
    setCommand((MAV_CMD)json[_jsonCommandKey].toInt());
    setParam1(json[_jsonParam1Key].toDouble());
    setParam2(json[_jsonParam2Key].toDouble());
    setParam3(json[_jsonParam3Key].toDouble());
    setParam4(json[_jsonParam4Key].toDouble());
    setAutoContinue(json[_jsonAutoContinueKey].toBool());

    return true;
}


void MissionItem::setSequenceNumber(int sequenceNumber)
{
    _sequenceNumber = sequenceNumber;
    emit sequenceNumberChanged(_sequenceNumber);
}

void MissionItem::setCommand(MAV_CMD command)
{
    if ((MAV_CMD)this->command() != command) {
        _commandFact.setRawValue(command);
        setDefaultsForCommand();
        emit commandChanged(this->command());
    }
}

void MissionItem::setCommand(MavlinkQmlSingleton::Qml_MAV_CMD command)
{
    setCommand((MAV_CMD)command);
}


void MissionItem::setFrame(MAV_FRAME frame)
{
    if (this->frame() != frame) {
        _frameFact.setRawValue(frame);
        frameChanged(frame);
    }
}

void MissionItem::setAutoContinue(bool autoContinue)
{
    if (this->autoContinue() != autoContinue) {
        _autoContinueFact.setRawValue(autoContinue);
    }
}

void MissionItem::setIsCurrentItem(bool isCurrentItem)
{
    if (_isCurrentItem != isCurrentItem) {
        _isCurrentItem = isCurrentItem;
        emit isCurrentItemChanged(isCurrentItem);
    }
}

void MissionItem::setParam1(double param)
{
    if (param1() != param) {
        _param1Fact.setRawValue(param);
    }
}

void MissionItem::setParam2(double param)
{
    if (param2() != param) {
        _param2Fact.setRawValue(param);
    }
}

void MissionItem::setParam3(double param)
{
    if (param3() != param) {
        _param3Fact.setRawValue(param);
    }
}

void MissionItem::setParam4(double param)
{
    if (param4() != param) {
        _param4Fact.setRawValue(param);
    }
}

void MissionItem::setParam5(double param)
{
    if (param5() != param) {
        _param5Fact.setRawValue(param);
    }
}

void MissionItem::setParam6(double param)
{
    if (param6() != param) {
        _param6Fact.setRawValue(param);
    }
}

void MissionItem::setParam7(double param)
{
    if (param7() != param) {
        _param7Fact.setRawValue(param);
    }
}

bool MissionItem::standaloneCoordinate(void) const
{
    if (_missionCommands->contains((MAV_CMD)command())) {
        return _missionCommands->getMavCmdInfo((MAV_CMD)command(), _vehicle)->standaloneCoordinate();
    } else {
        return false;
    }
}

bool MissionItem::specifiesCoordinate(void) const
{
    if (_missionCommands->contains((MAV_CMD)command())) {
        return _missionCommands->getMavCmdInfo((MAV_CMD)command(), _vehicle)->specifiesCoordinate();
    } else {
        return false;
    }
}

QString MissionItem::commandDescription(void) const
{
    if (_missionCommands->contains((MAV_CMD)command())) {
        return _missionCommands->getMavCmdInfo((MAV_CMD)command(), _vehicle)->description();
    } else {
        qWarning() << "Should not ask for command description on unknown command";
        return QString();
    }
}

void MissionItem::_clearParamMetaData(void)
{
    _param1MetaData.setRawUnits("");
    _param1MetaData.setDecimalPlaces(FactMetaData::defaultDecimalPlaces);
    _param2MetaData.setRawUnits("");
    _param2MetaData.setDecimalPlaces(FactMetaData::defaultDecimalPlaces);
    _param3MetaData.setRawUnits("");
    _param3MetaData.setDecimalPlaces(FactMetaData::defaultDecimalPlaces);
    _param4MetaData.setRawUnits("");
    _param4MetaData.setDecimalPlaces(FactMetaData::defaultDecimalPlaces);
}

QmlObjectListModel* MissionItem::textFieldFacts(void)
{
    QmlObjectListModel* model = new QmlObjectListModel(this);
    
    if (rawEdit()) {
        _param1Fact._setName("Param1:");
        _param1Fact.setMetaData(_defaultParamMetaData);
        model->append(&_param1Fact);
        _param2Fact._setName("Param2:");
        _param2Fact.setMetaData(_defaultParamMetaData);
        model->append(&_param2Fact);
        _param3Fact._setName("Param3:");
        _param3Fact.setMetaData(_defaultParamMetaData);
        model->append(&_param3Fact);
        _param4Fact._setName("Param4:");
        _param4Fact.setMetaData(_defaultParamMetaData);
        model->append(&_param4Fact);
        _param5Fact._setName("Lat/X:");
        _param5Fact.setMetaData(_defaultParamMetaData);
        model->append(&_param5Fact);
        _param6Fact._setName("Lon/Y:");
        _param6Fact.setMetaData(_defaultParamMetaData);
        model->append(&_param6Fact);
        _param7Fact._setName("Alt/Z:");
        _param7Fact.setMetaData(_defaultParamMetaData);
        model->append(&_param7Fact);
    } else {
        _clearParamMetaData();

        MAV_CMD command;
        if (_homePositionSpecialCase) {
            command = MAV_CMD_NAV_LAST;
        } else {
            command = (MAV_CMD)this->command();
        }

        Fact*           rgParamFacts[7] =       { &_param1Fact, &_param2Fact, &_param3Fact, &_param4Fact, &_param5Fact, &_param6Fact, &_param7Fact };
        FactMetaData*   rgParamMetaData[7] =    { &_param1MetaData, &_param2MetaData, &_param3MetaData, &_param4MetaData, &_param5MetaData, &_param6MetaData, &_param7MetaData };

        for (int i=1; i<=7; i++) {
            const QMap<int, MavCmdParamInfo*>& paramInfoMap = _missionCommands->getMavCmdInfo(command, _vehicle)->paramInfoMap();

            if (paramInfoMap.contains(i) && paramInfoMap[i]->enumStrings().count() == 0) {
                Fact*               paramFact =     rgParamFacts[i-1];
                FactMetaData*       paramMetaData = rgParamMetaData[i-1];
                MavCmdParamInfo*    paramInfo =     paramInfoMap[i];

                paramFact->_setName(paramInfo->label());
                paramMetaData->setDecimalPlaces(paramInfo->decimalPlaces());
                paramMetaData->setEnumInfo(paramInfo->enumStrings(), paramInfo->enumValues());
                paramMetaData->setRawUnits(paramInfo->units());
                paramFact->setMetaData(paramMetaData);
                model->append(paramFact);
            }
        }

        if (specifiesCoordinate()) {
            _param7Fact._setName("Altitude:");
            _param7Fact.setMetaData(_altitudeMetaData);
            model->append(&_param7Fact);
        }
    }
    
    return model;
}

QmlObjectListModel* MissionItem::checkboxFacts(void)
{
    QmlObjectListModel* model = new QmlObjectListModel(this);
    

    if (rawEdit()) {
        model->append(&_autoContinueFact);
    } else if (specifiesCoordinate() && !_homePositionSpecialCase) {
        model->append(&_altitudeRelativeToHomeFact);
    }

    return model;
}

QmlObjectListModel* MissionItem::comboboxFacts(void)
{
    QmlObjectListModel* model = new QmlObjectListModel(this);

    if (rawEdit()) {
        model->append(&_commandFact);
        model->append(&_frameFact);
    } else {
        Fact*           rgParamFacts[7] =       { &_param1Fact, &_param2Fact, &_param3Fact, &_param4Fact, &_param5Fact, &_param6Fact, &_param7Fact };
        FactMetaData*   rgParamMetaData[7] =    { &_param1MetaData, &_param2MetaData, &_param3MetaData, &_param4MetaData, &_param5MetaData, &_param6MetaData, &_param7MetaData };

        MAV_CMD command;
        if (_homePositionSpecialCase) {
            command = MAV_CMD_NAV_LAST;
        } else {
            command = (MAV_CMD)this->command();
        }

        for (int i=1; i<=7; i++) {
            const QMap<int, MavCmdParamInfo*>& paramInfoMap = _missionCommands->getMavCmdInfo(command, _vehicle)->paramInfoMap();

            if (paramInfoMap.contains(i) && paramInfoMap[i]->enumStrings().count() != 0) {
                Fact*               paramFact =     rgParamFacts[i-1];
                FactMetaData*       paramMetaData = rgParamMetaData[i-1];
                MavCmdParamInfo*    paramInfo =     paramInfoMap[i];

                paramFact->_setName(paramInfo->label());
                paramMetaData->setDecimalPlaces(paramInfo->decimalPlaces());
                paramMetaData->setEnumInfo(paramInfo->enumStrings(), paramInfo->enumValues());
                paramMetaData->setRawUnits(paramInfo->units());
                paramFact->setMetaData(paramMetaData);
                model->append(paramFact);
            }
        }
    }

    return model;
}

QGeoCoordinate MissionItem::coordinate(void) const
{
    return QGeoCoordinate(_param5Fact.rawValue().toDouble(), _param6Fact.rawValue().toDouble(), _param7Fact.rawValue().toDouble());
}

void MissionItem::setCoordinate(const QGeoCoordinate& coordinate)
{
    setParam5(coordinate.latitude());
    setParam6(coordinate.longitude());
    setParam7(coordinate.altitude());
}

bool MissionItem::friendlyEditAllowed(void) const
{
    if (_missionCommands->contains((MAV_CMD)command()) && _missionCommands->getMavCmdInfo((MAV_CMD)command(), _vehicle)->friendlyEdit()) {
        if (!autoContinue()) {
            return false;
        }

        if (specifiesCoordinate()) {
            return frame() == MAV_FRAME_GLOBAL || frame() == MAV_FRAME_GLOBAL_RELATIVE_ALT;
        }

        return true;
    }

    return false;
}

bool MissionItem::rawEdit(void) const
{
    return _rawEdit || !friendlyEditAllowed();
}

void MissionItem::setRawEdit(bool rawEdit)
{
    if (this->rawEdit() != rawEdit) {
        _rawEdit = rawEdit;
        emit rawEditChanged(this->rawEdit());
    }
}

void MissionItem::setDirty(bool dirty)
{
    if (!_homePositionSpecialCase || !dirty) {
        // Home position never affects dirty bit

        _dirty = dirty;
        // We want to emit dirtyChanged even if _dirty didn't change. This can be handy signal for
        // any value within the item changing.
        emit dirtyChanged(_dirty);
    }
}

void MissionItem::_setDirtyFromSignal(void)
{
    setDirty(true);
}

void MissionItem::setDistance(double distance)
{
    _distance = distance;
    emit distanceChanged(_distance);
}

void MissionItem::setAltDifference(double altDifference)
{
    _altDifference = altDifference;
    emit altDifferenceChanged(_altDifference);
}

void MissionItem::setAltPercent(double altPercent)
{
    _altPercent = altPercent;
    emit altPercentChanged(_altPercent);
}

void MissionItem::setAzimuth(double azimuth)
{
    _azimuth = azimuth;
    emit azimuthChanged(_azimuth);
}

void MissionItem::_sendCoordinateChanged(void)
{
    emit coordinateChanged(coordinate());
}

void MissionItem::_syncAltitudeRelativeToHomeToFrame(const QVariant& value)
{
    if (!_syncingAltitudeRelativeToHomeAndFrame) {
        _syncingAltitudeRelativeToHomeAndFrame = true;
        setFrame(value.toBool() ? MAV_FRAME_GLOBAL_RELATIVE_ALT : MAV_FRAME_GLOBAL);
        _syncingAltitudeRelativeToHomeAndFrame = false;
    }
}

void MissionItem::_syncFrameToAltitudeRelativeToHome(void)
{
    if (!_syncingAltitudeRelativeToHomeAndFrame) {
        _syncingAltitudeRelativeToHomeAndFrame = true;
        _altitudeRelativeToHomeFact.setRawValue(relativeAltitude());
        _syncingAltitudeRelativeToHomeAndFrame = false;
    }
}

void MissionItem::setDefaultsForCommand(void)
{
    // We set these global defaults first, then if there are param defaults they will get reset
    setParam7(defaultAltitude);

    MAV_CMD command = (MAV_CMD)this->command();
    if (_missionCommands->contains(command)) {
        MavCmdInfo* mavCmdInfo = _missionCommands->getMavCmdInfo(command, _vehicle);
        foreach (const MavCmdParamInfo* paramInfo, mavCmdInfo->paramInfoMap()) {
            Fact* rgParamFacts[7] = { &_param1Fact, &_param2Fact, &_param3Fact, &_param4Fact, &_param5Fact, &_param6Fact, &_param7Fact };

            rgParamFacts[paramInfo->param()-1]->setRawValue(paramInfo->defaultValue());
        }
    }

    setAutoContinue(true);
    setFrame(specifiesCoordinate() ? MAV_FRAME_GLOBAL_RELATIVE_ALT : MAV_FRAME_MISSION);
    setRawEdit(false);
}

void MissionItem::_sendUiModelChanged(void)
{
    emit uiModelChanged();
}

void MissionItem::_sendFrameChanged(void)
{
    emit frameChanged(frame());
}

void MissionItem::_sendCommandChanged(void)
{
    emit commandChanged(command());
}

QString MissionItem::commandName(void) const
{
    MAV_CMD command = (MAV_CMD)this->command();
    if (_missionCommands->contains(command)) {
        const MavCmdInfo* mavCmdInfo = _missionCommands->getMavCmdInfo(command, _vehicle);
        return mavCmdInfo->friendlyName().isEmpty() ? mavCmdInfo->rawName() : mavCmdInfo->friendlyName();
    } else {
        return QString("Unknown: %1").arg(command);
    }
}

void MissionItem::_sendFriendlyEditAllowedChanged(void)
{
    emit friendlyEditAllowedChanged(friendlyEditAllowed());
}

QString MissionItem::category(void) const
{
    return qgcApp()->toolbox()->missionCommands()->categoryFromCommand(command());
}

void MissionItem::setShowHomePosition(bool showHomePosition)
{
    if (showHomePosition != _showHomePosition) {
        _showHomePosition = showHomePosition;
        emit showHomePositionChanged(_showHomePosition);
    }
}