/* Copyright (C) 2019
 * swift Project Community / Contributors
 *
 * This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
 * directory of this distribution. No part of swift project, including this file, may be copied, modified, propagated,
 * or distributed except according to the terms contained in the LICENSE file.
 */

#include "flightgearutil.h"
#include "blackmisc/fileutils.h"
#include "blackmisc/directoryutils.h"
#include "blackconfig/buildconfig.h"
#include "qsystemdetection.h"
#include <QDir>
#include <QFile>
#include <QFileInfo>
#include <QIODevice>
#include <QTextStream>
#include <QSettings>
#include <QStandardPaths>

using namespace BlackConfig;

namespace BlackMisc
{
    namespace Simulation
    {
        namespace Flightgear
        {

            const QString &CFlightgearUtil::flightgearRootDir()
            {
                static QString flightgearRootDir;
                if (CBuildConfig::isRunningOnWindowsNtPlatform()){
                    QSettings flightgearRegistry("HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\FlightGear_is1", QSettings::NativeFormat);
                    flightgearRootDir = flightgearRegistry.value("InstallLocation").toString().trimmed();
                }
                return flightgearRootDir;
            }


            bool CFlightgearUtil::isFlightgearRootDirExisting()
            {
                static const bool exists = QDir(flightgearRootDir()).exists();
                return exists;
            }

            QStringList CFlightgearUtil::modelDirectoriesFromSimDir(const QString &simulatorDir)
            {
                QStringList dirs;
                if (CBuildConfig::isRunningOnWindowsNtPlatform() && !simulatorDir.isEmpty()){
                    QString terraSyncFolder = QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation) + "/Flightgear/Aircraft";
                    if(QDir(terraSyncFolder).exists()){ dirs.append(terraSyncFolder); }
                    QString fgdataAIFolder = simulatorDir + "data/AI/Aircraft";
                    if (QDir(fgdataAIFolder).exists()) { dirs.append(fgdataAIFolder); }
                }
                return dirs;
            }

            const QStringList &CFlightgearUtil::flightgearModelDirectories()
            {
                static const QStringList dirs = flightgearRootDir().isEmpty() ? QStringList() : modelDirectoriesFromSimDir(flightgearRootDir());
                return dirs;
            }

            const QStringList &CFlightgearUtil::flightgearModelExcludeDirectoryPatterns()
            {
                static const QStringList empty;
                return empty;
            }
        } // namespace
    } // namespace
} // namespace