#include "LauncherController.hxx"

// Qt headers
#include <QDebug>
#include <QDesktopServices>
#include <QFileDialog>
#include <QJSEngine>
#include <QMessageBox>
#include <QNetworkAccessManager>
#include <QNetworkDiskCache>
#include <QPushButton>
#include <QQmlComponent>
#include <QQuickWindow>
#include <QSettings>

// simgear headers
#include <simgear/package/Install.hxx>
#include <simgear/environment/metar.hxx>
#include <simgear/structure/exception.hxx>

// FlightGear headers
#include <Network/HTTPClient.hxx>
#include <Main/globals.hxx>
#include <Airports/airport.hxx>
#include <Main/options.hxx>
#include <Main/fg_init.hxx>
#include <Main/fg_props.hxx>
#include "version.h"
#include <Main/sentryIntegration.hxx>

#include "AircraftModel.hxx"
#include "AircraftSearchFilterModel.hxx"
#include "AirportDiagram.hxx"
#include "CarrierDiagram.hxx"
#include "CarriersLocationModel.hxx"
#include "DefaultAircraftLocator.hxx"
#include "FlightPlanController.hxx"
#include "HoverArea.hxx"
#include "LaunchConfig.hxx"
#include "LauncherArgumentTokenizer.hxx"
#include "LauncherNotificationsController.hxx"
#include "LocationController.hxx"
#include "MPServersModel.h"
#include "ModelDataExtractor.hxx"
#include "NavaidDiagram.hxx"
#include "NavaidSearchModel.hxx"
#include "PathUrlHelper.hxx"
#include "PixmapImageItem.hxx"
#include "PreviewImageItem.hxx"
#include "QmlAircraftInfo.hxx"
#include "QmlPositioned.hxx"
#include "QmlRadioButtonHelper.hxx"
#include "QtLauncher.hxx"
#include "RecentAircraftModel.hxx"
#include "RecentLocationsModel.hxx"
#include "RouteDiagram.hxx"
#include "SetupRootDialog.hxx"
#include "StackController.hxx"
#include "ThumbnailImageItem.hxx"
#include "UnitsModel.hxx"
#include "UpdateChecker.hxx"
#include "GettingStartedTipsController.hxx"
#include "GettingStartedTip.hxx"
#include "TipBackgroundBox.hxx"
#include "GettingStartedScope.hxx"

using namespace simgear::pkg;

LauncherController::LauncherController(QObject *parent, QWindow* window) :
    QObject(parent),
    m_window(window)
{
    m_serversModel = new MPServersModel(this);
    m_location = new LocationController(this);
    m_locationHistory = new RecentLocationsModel(this);
    m_selectedAircraftInfo = new QmlAircraftInfo(this);

    m_config = new LaunchConfig(this);
    connect(m_config, &LaunchConfig::collect, this, &LauncherController::collectAircraftArgs);
    connect(m_config, &LaunchConfig::save, this, &LauncherController::saveAircraft);
    connect(m_config, &LaunchConfig::restore, this, &LauncherController::restoreAircraft);

    m_flightPlan = new FlightPlanController(this, m_config);

    m_location->setLaunchConfig(m_config);
    connect(m_location, &LocationController::descriptionChanged,
            this, &LauncherController::summaryChanged);

    initQML();

    m_aircraftModel = new AircraftItemModel(this);
    m_installedAircraftModel = new AircraftProxyModel(this, m_aircraftModel);
    m_installedAircraftModel->setInstalledFilterEnabled(true);

    m_aircraftWithUpdatesModel = new AircraftProxyModel(this, m_aircraftModel);
    m_aircraftWithUpdatesModel->setInstalledFilterEnabled(true);
    m_aircraftWithUpdatesModel->setHaveUpdateFilterEnabled(true);

    m_browseAircraftModel = new AircraftProxyModel(this, m_aircraftModel);
    m_browseAircraftModel->setRatingFilterEnabled(true);

    m_aircraftSearchModel = new AircraftProxyModel(this, m_aircraftModel);

    m_favouriteAircraftModel = new AircraftProxyModel(this, m_aircraftModel);
    m_favouriteAircraftModel->setShowFavourites(true);

    m_aircraftHistory = new RecentAircraftModel(m_aircraftModel, this);

    connect(m_aircraftModel, &AircraftItemModel::aircraftInstallCompleted,
            this, &LauncherController::onAircraftInstalledCompleted);
    connect(m_aircraftModel, &AircraftItemModel::aircraftInstallFailed,
            this, &LauncherController::onAircraftInstallFailed);

    connect(LocalAircraftCache::instance(),
            &LocalAircraftCache::scanCompleted,
            this, &LauncherController::updateSelectedAircraft);

    QSettings settings;
    m_aircraftModel->setPackageRoot(globals->packageRoot());

    m_aircraftGridMode = settings.value("aircraftGridMode").toBool();

    m_subsystemIdleTimer = new QTimer(this);
    m_subsystemIdleTimer->setInterval(5);
    connect(m_subsystemIdleTimer, &QTimer::timeout, []()
       {globals->get_subsystem_mgr()->update(0.0);});
    m_subsystemIdleTimer->start();

    QRect winRect = settings.value("window-geometry").toRect();

    if (winRect.isValid()) {
        m_window->setGeometry(winRect);
    } else {
        m_window->setWidth(600);
        m_window->setHeight(800);
    }

    if (settings.contains("window-state")) {
        const auto ws = static_cast<Qt::WindowState>(settings.value("window-state").toInt());
        m_window->setWindowState(ws);
    }

    // count launches; we use this to trigger first-run and periodic notices
    // in the UI.
    m_launchCount = settings.value("launch-count", 0).toInt();
    settings.setValue("launch-count", m_launchCount + 1);

    std::ostringstream os;
    string_list versionParts = simgear::strutils::split(FLIGHTGEAR_VERSION, ".");
    if (versionParts.size() >= 2) {
        // build a setting key like launch-count-2020-2
        QString versionedCountKey = QString::fromStdString("launch-count-" + versionParts.at(0) + "-" + versionParts.at(1));
        m_versionLaunchCount = settings.value(versionedCountKey, 0).toInt();
        settings.setValue(versionedCountKey, m_versionLaunchCount + 1);
    }

    QTimer::singleShot(2000, this, &LauncherController::checkForOldDownloadDir);
}

void LauncherController::initQML()
{
    qmlRegisterUncreatableType<LauncherController>("FlightGear.Launcher", 1, 0, "LauncherController", "no");
    qmlRegisterUncreatableType<LocationController>("FlightGear.Launcher", 1, 0, "LocationController", "no");
    qmlRegisterUncreatableType<FlightPlanController>("FlightGear.Launcher", 1, 0, "FlightPlanController", "no");
    qmlRegisterUncreatableType<UpdateChecker>("FlightGear.Launcher", 1, 0, "UpdateChecker", "for enums");

    qmlRegisterType<LauncherArgumentTokenizer>("FlightGear.Launcher", 1, 0, "ArgumentTokenizer");
    qmlRegisterUncreatableType<QAbstractItemModel>("FlightGear.Launcher", 1, 0, "QAIM", "no");
    qmlRegisterUncreatableType<AircraftProxyModel>("FlightGear.Launcher", 1, 0, "AircraftProxyModel", "no");
    qmlRegisterUncreatableType<RecentAircraftModel>("FlightGear.Launcher", 1, 0, "RecentAircraftModel", "no");
    qmlRegisterUncreatableType<RecentLocationsModel>("FlightGear.Launcher", 1, 0, "RecentLocationsModel", "no");
    qmlRegisterUncreatableType<LaunchConfig>("FlightGear.Launcher", 1, 0, "LaunchConfig", "Singleton API");
    qmlRegisterUncreatableType<MPServersModel>("FlightGear.Launcher", 1, 0, "MPServers", "Singleton API");

    qmlRegisterType<NavaidSearchModel>("FlightGear", 1, 0, "NavaidSearch");
    qmlRegisterType<CarriersLocationModel>("FlightGear", 1, 0, "CarriersModel");

    qmlRegisterUncreatableType<Units>("FlightGear", 1, 0, "Units", "Only for enum");
    qmlRegisterType<UnitsModel>("FlightGear", 1, 0, "UnitsModel");

    qmlRegisterType<FileDialogWrapper>("FlightGear", 1, 0, "FileDialog");
    qmlRegisterType<QmlAircraftInfo>("FlightGear.Launcher", 1, 0, "AircraftInfo");

    qmlRegisterUncreatableType<LocalAircraftCache>("FlightGear.Launcher", 1, 0, "LocalAircraftCache", "Aircraft cache");
    qmlRegisterUncreatableType<AircraftItemModel>("FlightGear.Launcher", 1, 0, "AircraftModel", "Built-in model");
    qmlRegisterType<ThumbnailImageItem>("FlightGear.Launcher", 1, 0, "ThumbnailImage");
    qmlRegisterType<PreviewImageItem>("FlightGear.Launcher", 1, 0, "PreviewImage");

    qmlRegisterType<QmlPositioned>("FlightGear", 1, 0, "Positioned");
    // this is a Q_GADGET, but we need to register it for use in return types, etc
    qRegisterMetaType<QmlGeod>();

    qmlRegisterType<PixmapImageItem>("FlightGear", 1, 0, "PixmapImage");
    qmlRegisterType<AirportDiagram>("FlightGear", 1, 0, "AirportDiagram");
    qmlRegisterType<CarrierDiagram>("FlightGear", 1, 0, "CarrierDiagram");
    qmlRegisterType<NavaidDiagram>("FlightGear", 1, 0, "NavaidDiagram");
    qmlRegisterType<RouteDiagram>("FlightGear", 1, 0, "RouteDiagram");
    qmlRegisterType<QmlRadioButtonGroup>("FlightGear", 1, 0, "RadioButtonGroup");
    qmlRegisterType<HoverArea>("FlightGear", 1, 0, "HoverArea");
    qmlRegisterType<StackController>("FlightGear", 1, 0, "StackController");

    qmlRegisterType<ModelDataExtractor>("FlightGear", 1, 0, "ModelDataExtractor");

    qmlRegisterSingletonType(QUrl("qrc:/qml/OverlayShared.qml"), "FlightGear", 1, 0, "OverlayShared");

    qmlRegisterType<GettingStartedScope>("FlightGear", 1, 0, "GettingStartedScope");
    qmlRegisterType<GettingStartedTipsController>("FlightGear", 1, 0, "GettingStartedController");
    qmlRegisterType<GettingStartedTip>("FlightGear", 1, 0, "GettingStartedTip");
    qmlRegisterType<TipBackgroundBox>("FlightGear", 1, 0, "TipBackgroundBox");

    QNetworkDiskCache* diskCache = new QNetworkDiskCache(this);
    SGPath cachePath = globals->get_fg_home() / "PreviewsCache";
    diskCache->setCacheDirectory(QString::fromStdString(cachePath.utf8Str()));

    QNetworkAccessManager* netAccess = new QNetworkAccessManager(this);
    netAccess->setCache(diskCache);
    PreviewImageItem::setGlobalNetworkAccess(netAccess);
}

void LauncherController::setInAppMode()
{
	m_inAppMode = true;
	m_keepRunningInAppMode = true;
	m_appModeResult = true;
    emit inAppChanged();
}

bool LauncherController::keepRunningInAppMode() const
{
	return m_keepRunningInAppMode;
}

bool LauncherController::inAppResult() const
{
	return m_appModeResult;
}

void LauncherController::initialRestoreSettings()
{
    m_selectedAircraft = m_aircraftHistory->mostRecent();
    if (m_selectedAircraft.isEmpty()) {
        // select the default aircraft specified in defaults.xml
        flightgear::DefaultAircraftLocator da;
        if (da.foundPath().exists()) {
            m_selectedAircraft = QUrl::fromLocalFile(QString::fromStdString(da.foundPath().utf8Str()));
            qDebug() << "Restored default aircraft:" << m_selectedAircraft;
        } else {
            qWarning() << "Completely failed to find the default aircraft";
        }
    }

    m_location->restoreSearchHistory();
    QVariantMap currentLocation = m_locationHistory->mostRecent();
    if (currentLocation.isEmpty()) {
        // use the default
        std::string defaultAirport = flightgear::defaultAirportICAO();
        FGAirportRef apt = FGAirport::findByIdent(defaultAirport);
        if (apt) {
            currentLocation["location-id"] = static_cast<qlonglong>(apt->guid());
            currentLocation["location-apt-runway"] = "ACTIVE";
        } // otherwise we failed to find the default airport in the nav-db :(
    }
    m_location->restoreLocation(currentLocation);

    emit selectedAircraftChanged(m_selectedAircraft);

    updateSelectedAircraft();
    m_serversModel->requestRestore();
    m_aircraftState = m_config->getValueForKey("", "selected-aircraft-state", QString()).toString();
    emit selectedAircraftStateChanged();

    emit summaryChanged();
 }

void LauncherController::saveSettings()
{
    QSettings settings;
    if (m_window->windowState() != Qt::WindowMaximized) {
        settings.setValue("window-geometry", m_window->geometry());
    }
    settings.setValue("window-state", m_window->windowState());

    m_config->saveConfigToINI();
    m_aircraftHistory->saveToSettings();
    m_locationHistory->saveToSettings();
}

void LauncherController::collectAircraftArgs()
{
    if (m_skipAircraftFromArgs)
        return;

    // aircraft
    if (!m_selectedAircraft.isEmpty()) {
        if (m_selectedAircraft.isLocalFile()) {
            QFileInfo setFileInfo(m_selectedAircraft.toLocalFile());
            m_config->setArg("aircraft-dir", setFileInfo.dir().absolutePath());
            QString setFile = setFileInfo.fileName();
            Q_ASSERT(setFile.endsWith("-set.xml"));
            setFile.truncate(setFile.count() - 8); // drop the '-set.xml' portion
            m_config->setArg("aircraft", setFile);

            flightgear::addSentryBreadcrumb("Launcher: collectAircraftArgs:" + m_config->getArg("aircraft").toStdString()
                + " at " + m_config->getArg("aircraft-dir").toStdString(), "info");
        } else if (m_selectedAircraft.scheme() == "package") {
            // no need to set aircraft-dir, handled by the corresponding code
            // in fgInitAircraft
            m_config->setArg("aircraft", m_selectedAircraft.path());

            flightgear::addSentryBreadcrumb("Launcher: collectAircraftArgs:" + m_config->getArg("aircraft").toStdString(), "info");
        } else {
            qWarning() << "unsupported aircraft launch URL" << m_selectedAircraft;
        }
    }

    if (m_selectedAircraftInfo->hasStates() && !m_aircraftState.isEmpty()) {
        QString state = m_aircraftState;
        if ((m_aircraftState == "auto") && !m_selectedAircraftInfo->haveExplicitAutoState()) {
            state = selectAircraftStateAutomatically();
#if QT_VERSION >= 0x050600
            qInfo() << "doing launcher auto state selection, picked:" + state;
#endif
        }

        if (!state.isEmpty()) {
            m_config->setArg("state", state);
        }
    }
}

void LauncherController::saveAircraft()
{
    flightgear::addSentryBreadcrumb("Launcher: saveAircraft:" + m_selectedAircraft.toString().toStdString(), "info");
    m_config->setValueForKey("", "selected-aircraft", m_selectedAircraft);
    if (!m_aircraftState.isEmpty()) {
        m_config->setValueForKey("", "selected-aircraft-state", m_aircraftState);
    }
}

void LauncherController::restoreAircraft()
{
    m_selectedAircraft = m_config->getValueForKey("", "selected-aircraft", QUrl()).toUrl();
    m_aircraftState = m_config->getValueForKey("", "selected-aircraft-state", QString()).toString();
    emit selectedAircraftChanged(m_selectedAircraft);
    updateSelectedAircraft();
    emit selectedAircraftStateChanged();
}

void LauncherController::doRun()
{
    flightgear::addSentryBreadcrumb("Launcher: fly!:" + m_selectedAircraft.toString().toStdString(), "info");
    flightgear::Options* opt = flightgear::Options::sharedInstance();
    m_config->reset();
    m_config->collect();

    m_aircraftHistory->insert(m_selectedAircraft);

    QVariant locSet = m_location->saveLocation();
    m_locationHistory->insert(locSet);

    flightgear::addSentryBreadcrumb("acft path:" + m_selectedAircraftInfo->pathOnDisk().toStdString(), "info");

    // aircraft paths
    QSettings settings;
    QString downloadDir = settings.value("downloadSettings/downloadDir").toString();
    if (!downloadDir.isEmpty()) {
        QDir d(downloadDir);
        if (!d.exists()) {
            int result = QMessageBox::question(nullptr, tr("Create download folder?"),
                                  tr("The selected location for downloads does not exist. (%1) Create it?").arg(downloadDir),
                                               QMessageBox::Yes | QMessageBox::No | QMessageBox::Cancel);
            if (result == QMessageBox::Cancel) {
                return;
            }

            if (result == QMessageBox::Yes) {
                d.mkpath(downloadDir);
            }
        }
    }

    if (settings.contains("restore-defaults-on-run")) {
        settings.remove("restore-defaults-on-run");
        opt->addOption("restore-defaults", "");
    }

    m_config->applyToOptions();
    saveSettings();
}

void LauncherController::doApply()
{
    // aircraft
    if (!m_selectedAircraft.isEmpty()) {
        std::string aircraftPropValue,
            aircraftDir;

        if (m_selectedAircraft.isLocalFile()) {
            QFileInfo setFileInfo(m_selectedAircraft.toLocalFile());
            QString setFile = setFileInfo.fileName();
            Q_ASSERT(setFile.endsWith("-set.xml"));
            setFile.truncate(setFile.count() - 8); // drop the '-set.xml' portion
            aircraftDir = setFileInfo.dir().absolutePath().toStdString();
            aircraftPropValue = setFile.toStdString();
        } else if (m_selectedAircraft.scheme() == "package") {
            // no need to set aircraft-dir, handled by the corresponding code
            // in fgInitAircraft
            aircraftPropValue = m_selectedAircraft.path().toStdString();
        } else {
            qWarning() << "unsupported aircraft launch URL" << m_selectedAircraft;
        }

        m_aircraftHistory->insert(m_selectedAircraft);
        globals->get_props()->setStringValue("/sim/aircraft", aircraftPropValue);
        globals->get_props()->setStringValue("/sim/aircraft-dir", aircraftDir);
    }

    m_location->setLocationProperties();
    saveSettings();
}


QString LauncherController::selectAircraftStateAutomatically()
{
    if (!m_selectedAircraftInfo)
        return {};

    if (m_location->isAirborneLocation() && m_selectedAircraftInfo->hasState("cruise")) {
        const double altitudeFt = m_location->altitude().convertToUnit(Units::FeetMSL).value;
        if (altitudeFt > 6000) {
            return "cruise";
        }
    }

    if (m_location->isCarrier() && m_location->isAirborneLocation() && m_selectedAircraftInfo->hasState("carrier-approach")) {
        return "carrier-approach";
    }

    if (m_location->isAirborneLocation() && m_selectedAircraftInfo->hasState("approach")) {
        return "approach";
    }

    if (m_location->isParkedLocation()) {
        if (m_selectedAircraftInfo->hasState("parked")) {
            return "parked";
        }
        if (m_selectedAircraftInfo->hasState("parking")) {
            return "parking";
        }
    }

    if (m_location->isCarrier() && m_selectedAircraftInfo->hasState("carrier-take-off")) {
        return "carrier-take-off";
    }

    if (m_selectedAircraftInfo->hasState("take-off")) {
        return "take-off";
    }

    return {}; // failed to compute, give up
}

void LauncherController::maybeUpdateSelectedAircraft(QModelIndex index)
{
    QUrl u = index.data(AircraftURIRole).toUrl();
    if (u == m_selectedAircraft) {
        // potentially enable the run button now!
        updateSelectedAircraft();
    }
}

void LauncherController::updateSelectedAircraft()
{
    m_selectedAircraftInfo->setUri(m_selectedAircraft);
    QModelIndex index = m_aircraftModel->indexOfAircraftURI(m_selectedAircraft);
    if (index.isValid()) {
        // we have to default to unknown here, until we have an explicit
        // way to determine if it's a regular aircraft or not
        m_aircraftType = Unknown;
        if (index.data(AircraftIsHelicopterRole).toBool()) {
            m_aircraftType = Helicopter;
        } else if (index.data(AircraftIsSeaplaneRole).toBool()) {
            m_aircraftType = Seaplane;
        }
    }

    if (!m_aircraftState.isEmpty()) {
      if (!m_selectedAircraftInfo->hasState(m_aircraftState)) {
        m_aircraftState.clear();
        emit selectedAircraftStateChanged();
      }
    }

    emit canFlyChanged();
}

bool LauncherController::canFly() const
{
    QModelIndex index = m_aircraftModel->indexOfAircraftURI(m_selectedAircraft);
    if (!index.isValid()) {
        return false;
    }

    int status = index.data(AircraftPackageStatusRole).toInt();
    bool canRun = (status == LocalAircraftCache::PackageInstalled);
    return canRun;
}

void LauncherController::downloadDirChanged(QString path)
{
    // this can get run if the UI is disabled, just bail out before doing
    // anything permanent.
    if (!m_config->enableDownloadDirUI()) {
        return;
    }

    // if the default dir is passed in, map that back to the empty string
    if (path == m_config->defaultDownloadDir()) {
        path.clear();
    }

    auto options = flightgear::Options::sharedInstance();
    if (options->valueForOption("download-dir") == path.toStdString()) {
        // this works because we propogate the value from QSettings to
        // the flightgear::Options object in runLauncherDialog()
        // so the options object always contains our current idea of this
        // value
        return;
    }

    if (!path.isEmpty()) {
        options->setOption("download-dir", path.toStdString());
    } else {
        options->clearOption("download-dir");
    }

    m_config->setValueForKey("", "download-dir", path);
    saveSettings();
    flightgear::restartTheApp();
}

QmlAircraftInfo *LauncherController::selectedAircraftInfo() const
{
    return m_selectedAircraftInfo;
}

void LauncherController::restoreLocation(QVariant var)
{
    m_location->restoreLocation(var.toMap());
}

QUrl LauncherController::selectedAircraft() const
{
    return m_selectedAircraft;
}

bool LauncherController::matchesSearch(QString term, QStringList keywords) const
{
    Q_FOREACH(QString s, keywords) {
        if (s.contains(term, Qt::CaseInsensitive)) {
            return true;
        }
    }

    return false;
}

bool LauncherController::isSearchActive() const
{
    return !m_settingsSearchTerm.isEmpty();
}

QStringList LauncherController::settingsSummary() const
{
    return m_settingsSummary;
}

QStringList LauncherController::environmentSummary() const
{
    return m_environmentSummary;
}


void LauncherController::setSelectedAircraft(QUrl selectedAircraft)
{
    if (m_selectedAircraft == selectedAircraft)
        return;

    m_selectedAircraft = selectedAircraft;
    m_aircraftState.clear();

    updateSelectedAircraft();
    emit selectedAircraftChanged(m_selectedAircraft);
    emit selectedAircraftStateChanged();
}

void LauncherController::setSettingsSearchTerm(QString settingsSearchTerm)
{
    if (m_settingsSearchTerm == settingsSearchTerm)
        return;

    m_settingsSearchTerm = settingsSearchTerm;
    emit searchChanged();
}

void LauncherController::setSettingsSummary(QStringList settingsSummary)
{
    if (m_settingsSummary == settingsSummary)
        return;

    m_settingsSummary = settingsSummary;
    emit summaryChanged();
}

void LauncherController::setEnvironmentSummary(QStringList environmentSummary)
{
    if (m_environmentSummary == environmentSummary)
        return;

    m_environmentSummary = environmentSummary;
    emit summaryChanged();
}

void LauncherController::fly()
{
    // avoid duplicate calls to fly, if the user's system is slow, and they
    // generate multiple clicks / events before the qApp->exit() fires.
    // without this, we can apply options, etc twice which breaks.
    if (m_flyRequested)
        return;
    m_flyRequested = true;

	if (m_inAppMode) {
		doApply();
		m_keepRunningInAppMode = false;
		m_appModeResult = true;
	} else {
		doRun();
		qApp->exit(1);
	}
}

void LauncherController::quit()
{
	if (m_inAppMode) {
		m_keepRunningInAppMode = false;
		m_appModeResult = false;
	} else {
        saveSettings();
		qApp->exit(0);
	}
}

QStringList LauncherController::combinedSummary() const
{
    return m_settingsSummary + m_environmentSummary;
}

simgear::pkg::PackageRef LauncherController::packageForAircraftURI(QUrl uri) const
{
    if (uri.scheme() != "package") {
        qWarning() << "invalid URL scheme:" << uri;
        return simgear::pkg::PackageRef();
    }

    QString ident = uri.path();
    return globals->packageRoot()->getPackageById(ident.toStdString());
}

bool LauncherController::validateMetarString(QString metar)
{
    if (metar.isEmpty()) {
        return true;
    }

    try {
        std::string s = metar.toStdString();
        SGMetar theMetar(s);
    } catch (sg_io_exception&) {
        return false;
    }

    return true;
}

void LauncherController::requestInstallUpdate(QUrl aircraftUri)
{
    simgear::pkg::PackageRef pref = packageForAircraftURI(aircraftUri);
    if (pref) {
        if (pref->isInstalled()) {
            InstallRef install = pref->existingInstall();
            if (install->hasUpdate()) {
                globals->packageRoot()->scheduleToUpdate(install);
            }
        } else {
            pref->install();
        }
    }
}

void LauncherController::requestUninstall(QUrl aircraftUri)
{
    simgear::pkg::PackageRef pref = packageForAircraftURI(aircraftUri);
    if (pref) {
        simgear::pkg::InstallRef i = pref->existingInstall();
        if (i) {
            i->uninstall();
        }
    }
}

void LauncherController::requestInstallCancel(QUrl aircraftUri)
{
    simgear::pkg::PackageRef pref = packageForAircraftURI(aircraftUri);
    if (pref) {
        simgear::pkg::InstallRef i = pref->existingInstall();
        if (i) {
            i->cancelDownload();
        }
    }
}

void LauncherController::requestUpdateAllAircraft()
{
    const auto pkgRoot = globals->packageRoot();
    const PackageList& toBeUpdated = pkgRoot->packagesNeedingUpdate();
    std::for_each(toBeUpdated.begin(), toBeUpdated.end(), [pkgRoot](PackageRef pkg) {
        const auto ins = pkg->install();
        if (!pkgRoot->isInstallQueued(ins)) {
            pkgRoot->scheduleToUpdate(ins);
        }
    });
}

void LauncherController::queryMPServers()
{
    m_serversModel->refresh();
}

QString LauncherController::versionString() const
{
    return FLIGHTGEAR_VERSION;
}

RecentAircraftModel *LauncherController::aircraftHistory()
{
    return m_aircraftHistory;
}

RecentLocationsModel *LauncherController::locationHistory()
{
    return m_locationHistory;
}

void LauncherController::launchUrl(QUrl url)
{
    QDesktopServices::openUrl(url);
}

QVariantList LauncherController::defaultSplashUrls() const
{
    QVariantList urls;

    for (auto path : flightgear::defaultSplashScreenPaths()) {
        QUrl url = QUrl::fromLocalFile(QString::fromStdString(path));
        urls.append(url);
    }

    return urls;
}

QVariant LauncherController::loadUISetting(QString name, QVariant defaultValue) const
{
    QSettings settings;
    if (!settings.contains(name))
        return defaultValue;
    return settings.value(name);
}

void LauncherController::saveUISetting(QString name, QVariant value) const
{
    QSettings settings;
    settings.setValue(name, value);
}

void LauncherController::onAircraftInstalledCompleted(QModelIndex index)
{
    maybeUpdateSelectedAircraft(index);
}

void LauncherController::onAircraftInstallFailed(QModelIndex index, QString errorMessage)
{
    qWarning() << Q_FUNC_INFO << index.data(AircraftURIRole) << errorMessage;

    QMessageBox msg;
    msg.setWindowTitle(tr("Aircraft installation failed"));
    msg.setText(tr("An error occurred installing the aircraft %1: %2").
                arg(index.data(Qt::DisplayRole).toString()).arg(errorMessage));
    msg.addButton(QMessageBox::Ok);
    msg.exec();

    maybeUpdateSelectedAircraft(index);
}


QPointF LauncherController::mapToGlobal(QQuickItem *item, const QPointF &pos) const
{
    QPointF scenePos = item->mapToScene(pos);
    QQuickWindow* win = item->window();
    return win->mapToGlobal(scenePos.toPoint());
}

void LauncherController::requestRestoreDefaults()
{
	QMessageBox mbox;
	mbox.setText(tr("Restore all settings to defaults?"));
	mbox.setInformativeText(tr("Restoring settings to their defaults may affect available add-ons such as scenery or aircraft."));
	QPushButton* quitButton = mbox.addButton(tr("Restore and restart now"), QMessageBox::YesRole);
	mbox.addButton(QMessageBox::Cancel);
	mbox.setDefaultButton(QMessageBox::Cancel);
	mbox.setIconPixmap(QPixmap(":/app-icon-large"));

	mbox.exec();
	if (mbox.clickedButton() != quitButton) {
		return;
	}

	{
		QSettings settings;
		settings.clear();
		settings.setValue("restore-defaults-on-run", true);
	}

	flightgear::restartTheApp();
}

void LauncherController::requestChangeDataPath()
{
	QString currentLocText;
	QSettings settings;
	QString root = settings.value(SetupRootDialog::rootPathKey()).toString();
	if (root.isNull()) {
		currentLocText = tr("Currently the built-in data files are being used");
	}
	else {
		currentLocText = tr("Currently using location: %1").arg(root);
	}

	QMessageBox mbox;
	mbox.setText(tr("Change the data files used by FlightGear?"));
	mbox.setInformativeText(tr("FlightGear requires additional files to operate. "
		"(Also called the base package, or fg-data) "
		"You can restart FlightGear and choose a "
		"different data files location, or restore the default setting. %1").arg(currentLocText));
	QPushButton* quitButton = mbox.addButton(tr("Restart FlightGear now"), QMessageBox::YesRole);
	mbox.addButton(QMessageBox::Cancel);
	mbox.setDefaultButton(QMessageBox::Cancel);
	mbox.setIconPixmap(QPixmap(":/app-icon-large"));

	mbox.exec();
	if (mbox.clickedButton() != quitButton) {
		return;
	}

    SetupRootDialog::askRootOnNextLaunch();
    flightgear::restartTheApp();
}

void LauncherController::openConfig()
{
    QString file = QFileDialog::getOpenFileName(nullptr, tr("Choose a saved configuration"),
       {}, "*.fglaunch");
    if (file.isEmpty())
        return;

    m_config->loadConfigFromFile(file);
}

void LauncherController::saveConfigAs()
{
    QString file = QFileDialog::getSaveFileName(nullptr, tr("Save the current configuration"),
       {}, "*.fglaunch");
    if (file.isEmpty())
        return;
    if (!file.endsWith(".fglaunch")) {
        file += ".fglaunch";
    }

    m_config->saveConfigToFile(file);
}

void LauncherController::setAircraftGridMode(bool aircraftGridMode)
{
    if (m_aircraftGridMode == aircraftGridMode)
        return;

    QSettings settings;
    settings.setValue("aircraftGridMode", aircraftGridMode);
    m_aircraftGridMode = aircraftGridMode;
    emit aircraftGridModeChanged(m_aircraftGridMode);
}

void LauncherController::resetGettingStartedTips()
{
    {
        QSettings settings;
        settings.beginGroup("GettingStarted-DontShow");
        settings.remove(""); // remove all keys in the current group
        settings.endGroup();
    } // ensure settings are written, before we emit the signal

    emit didResetGettingStartedTips();
}

void LauncherController::setMinWindowSize(QSize sz)
{
    if (sz == m_minWindowSize)
        return;

    m_window->setMinimumSize(sz);
    emit minWindowSizeChanged();
}

QUrl LauncherController::flyIconUrl() const
{
    if (m_aircraftType == Helicopter) {
        return QUrl{"qrc:///svg/toolbox-fly-heli"};
    } else if (m_selectedAircraftInfo) {
        if (m_selectedAircraftInfo->hasTag("spaceship")) {
            return QUrl{"qrc:///svg/toolbox-fly-alt"};
        }
    }

    return QUrl{"qrc:///svg/toolbox-fly"};
}

QString LauncherController::flyButtonLabel() const
{
    if (m_aircraftType == Helicopter) {
        return tr("Fly!", "For a helicopter");
    } else if (m_selectedAircraftInfo) {
        if (m_selectedAircraftInfo->hasTag("spaceship")) {
            return tr("Fly!", "For a spaceship");
        }
    }

    return tr("Fly!");
}

QUrl LauncherController::urlToDataPath(QString relPath) const
{
    QString absFilePath = QString::fromStdString(globals->get_fg_root().utf8Str());
    if (!relPath.startsWith("/")) {
        relPath.prepend("/");
    }
    return QUrl::fromLocalFile(absFilePath + relPath);
}

void LauncherController::checkForOldDownloadDir()
{
#if defined(Q_OS_WIN)
    auto options = flightgear::Options::sharedInstance();
    if (options->valueForOption("download-dir") != std::string{}) {
        return; // if we're using a custom value, nothing to do
    }

    if (haveOldWindowsDownloadDir()) {
        // the notifications logic handles 'don't show again' lgoic internally,
        // so we can always trigger this check
        auto nc = LauncherNotificationsController::instance();
        QJSValue args = nc->jsEngine()->newObject();

        const auto oldPath = SGPath::documents() / "FlightGear";
        const auto newPath = flightgear::defaultDownloadDir();

        const QUrl oldLocURI = QUrl::fromLocalFile(QString::fromStdString(oldPath.utf8Str()));
        const QUrl newLocURI = QUrl::fromLocalFile(QString::fromStdString(newPath.utf8Str()));

        args.setProperty("oldLocation", oldLocURI.toString());
        args.setProperty("newLocation", newLocURI.toString());
        args.setProperty("persistent-dismiss", true);

        nc->postNotification("have-old-downloads-location", QUrl{"qrc:///qml/DownloadsInDocumentsWarning.qml"}, args);
    }
#endif
}

bool LauncherController::haveOldWindowsDownloadDir() const
{
    const SGPath p = SGPath::documents() / "FlightGear";
    if ((p / "TerraSync").exists() || (p / "Aircraft").exists()) {
        return true;
    }

    // tex-cache dir is created by default, so check if it's populated
    simgear::Dir texCacheDir(p / "TextureCache");
    return (texCacheDir.exists() && !texCacheDir.isEmpty());
}
