valentina/src/app/core/vapplication.cpp

/************************************************************************
 **
 **  @file   vapplication.cpp
 **  @author Roman Telezhynskyi <dismine(at)gmail.com>
 **  @date   November 15, 2013
 **
 **  @brief
 **  @copyright
 **  This source code is part of the Valentine project, a pattern making
 **  program, whose allow create and modeling patterns of clothing.
 **  Copyright (C) 2013-2015 Valentina project
 **  <https://bitbucket.org/dismine/valentina> All Rights Reserved.
 **
 **  Valentina 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.
 **
 **  Valentina 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 Valentina.  If not, see <http://www.gnu.org/licenses/>.
 **
 *************************************************************************/

#include "vapplication.h"
#include "../libs/ifc/exception/vexceptionobjecterror.h"
#include "../libs/ifc/exception/vexceptionbadid.h"
#include "../libs/ifc/exception/vexceptionconversionerror.h"
#include "../libs/ifc/exception/vexceptionemptyparameter.h"
#include "../libs/ifc/exception/vexceptionwrongid.h"
#include "vmaingraphicsview.h"
#include "../version.h"
#include "../../utils/logging.h"

#include <QDebug>
#include <QDir>
#include <QProcess>
#include <QTemporaryFile>
#include <QUndoStack>
#include <QtCore/qmath.h>
#include <QTemporaryFile>
#include <QFile>
#include <QStandardPaths>
#include <QMessageBox>
#include <QThread>
#include <QDateTime>
#if QT_VERSION >= QT_VERSION_CHECK(5, 1, 0)
#   include <QLockFile>
#endif
#include <QtXmlPatterns>

Q_LOGGING_CATEGORY(vApp, "v.application")

//---------------------------------------------------------------------------------------------------------------------
inline void noisyFailureMsgHandler(QtMsgType type, const QMessageLogContext &context, const QString &msg)
{
    // Why on earth didn't Qt want to make failed signal/slot connections qWarning?
    if ((type == QtDebugMsg) && msg.contains("::connect"))
    {
        type = QtWarningMsg;
    }

    // this is another one that doesn't make sense as just a debug message.  pretty serious
    // sign of a problem
    // http://www.developer.nokia.com/Community/Wiki/QPainter::begin:Paint_device_returned_engine_%3D%3D_0_(Known_Issue)
    if ((type == QtDebugMsg) && msg.contains("QPainter::begin") && msg.contains("Paint device returned engine"))
    {
        type = QtWarningMsg;
    }

    // This qWarning about "Cowardly refusing to send clipboard message to hung application..."
    // is something that can easily happen if you are debugging and the application is paused.
    // As it is so common, not worth popping up a dialog.
    if ((type == QtWarningMsg) && QString(msg).contains("QClipboard::event")
            && QString(msg).contains("Cowardly refusing"))
    {
        type = QtDebugMsg;
    }

    // only the GUI thread should display message boxes.  If you are
    // writing a multithreaded application and the error happens on
    // a non-GUI thread, you'll have to queue the message to the GUI
    QCoreApplication *instance = QCoreApplication::instance();
    const bool isGuiThread = instance && (QThread::currentThread() == instance->thread());

    if (isGuiThread)
    {
        QString debugdate = "[" + QDateTime::currentDateTime().toString("yyyy.MM.dd hh:mm:ss");
        QMessageBox messageBox;
        switch (type)
        {
            case QtDebugMsg:
                debugdate += QString(":DEBUG:%1(%2)] %3: %4: %5").arg(context.file).arg(context.line)
                        .arg(context.function).arg(context.category).arg(msg);
                break;
            case QtWarningMsg:
                debugdate += QString(":WARNING:%1(%2)] %3: %4: %5").arg(context.file).arg(context.line)
                        .arg(context.function).arg(context.category).arg(msg);
                messageBox.setIcon(QMessageBox::Warning);
                break;
            case QtCriticalMsg:
                debugdate += QString(":CRITICAL:%1(%2)] %3: %4: %5").arg(context.file).arg(context.line)
                        .arg(context.function).arg(context.category).arg(msg);
                messageBox.setIcon(QMessageBox::Critical);
                break;
            case QtFatalMsg:
                debugdate += QString(":FATAL:%1(%2)] %3: %4: %5").arg(context.file).arg(context.line)
                        .arg(context.function).arg(context.category).arg(msg);
                messageBox.setIcon(QMessageBox::Critical);
                break;
            default:
                break;
        }

        (*qApp->LogFile()) << debugdate <<  endl;

        if (type == QtWarningMsg || type == QtCriticalMsg || type == QtFatalMsg)
        {
            messageBox.setInformativeText(msg);
            messageBox.setStandardButtons(QMessageBox::Ok);
            messageBox.setWindowModality(Qt::ApplicationModal);
            messageBox.setModal(true);
            messageBox.exec();
        }

        if (QtFatalMsg == type)
        {
            abort();
        }
    }
    else
    {
        if (type != QtDebugMsg)
        {
            abort(); // be NOISY unless overridden!
        }
    }
}

//---------------------------------------------------------------------------------------------------------------------

const qreal VApplication::PrintDPI = 96.0;

#if defined(Q_OS_WIN) && defined(Q_CC_GNU)
const QString VApplication::GistFileName = QStringLiteral("gist.json");
#endif // defined(Q_OS_WIN) && defined(Q_CC_GNU)

#define DefWidth 1.2//mm

//---------------------------------------------------------------------------------------------------------------------
/**
 * @brief VApplication constructor.
 * @param argc number arguments.
 * @param argv command line.
 */
VApplication::VApplication(int &argc, char **argv)
    : QApplication(argc, argv), _patternUnit(Unit::Cm), _patternType(MeasurementsType::Individual),
      _widthMainLine(DefWidth), _widthHairLine(DefWidth/3.0), trVars(nullptr),
      undoStack(nullptr), sceneView(nullptr), currentScene(nullptr), autoSaveTimer(nullptr), mainWindow(nullptr),
      openingPattern(false), settings(nullptr), doc(nullptr), log(nullptr),
#if QT_VERSION >= QT_VERSION_CHECK(5, 1, 0)
      out(nullptr), logLock(nullptr)
#else
      out(nullptr)
#endif
{
    undoStack = new QUndoStack(this);

    InitLineWidth();
}

//---------------------------------------------------------------------------------------------------------------------
VApplication::~VApplication()
{
    qCDebug(vApp, "Application closing.");
    qInstallMessageHandler(0); // Resore the message handler
    delete out;

    if (log != nullptr)
    {
        log->close();
        delete log;
#if QT_VERSION >= QT_VERSION_CHECK(5, 1, 0)
        delete logLock;
#endif
    }

    delete trVars;
}

//---------------------------------------------------------------------------------------------------------------------
/**
 * @brief NewValentina start Valentina in new process, send path to pattern file in argument.
 * @param fileName path to pattern file.
 */
void VApplication::NewValentina(const QString &fileName)
{
    qCDebug(vApp, "Open new detached process.");
    if (fileName.isEmpty())
    {
        qCDebug(vApp, "New process without arguments. program = %s", qApp->applicationFilePath().toUtf8().constData());
        // Path can contain spaces.
        if (QProcess::startDetached("\""+qApp->applicationFilePath()+"\""))
        {
            qCDebug(vApp, "The process was started successfully.");
        }
        else
        {
            qCWarning(vApp, "Could not run process. The operation timed out or an error occurred.");
        }
    }
    else
    {
        const QString run = QString("\"%1\" \"%2\"").arg(qApp->applicationFilePath()).arg(fileName);
        qCDebug(vApp, "New process with arguments. program = %s", run.toUtf8().constData());
        if (QProcess::startDetached(run))
        {
            qCDebug(vApp, "The process was started successfully.");
        }
        else
        {
            qCWarning(vApp, "Could not run process. The operation timed out or an error occurred.");
        }
    }
}

//---------------------------------------------------------------------------------------------------------------------
void VApplication::CheckFactor(qreal &oldFactor, const qreal &Newfactor)
{
    if (Newfactor <= 2 && Newfactor >= 0.5)
    {
        oldFactor = Newfactor;
    }
}

//---------------------------------------------------------------------------------------------------------------------
/**
 * @brief notify Reimplemented from QApplication::notify().
 * @param receiver receiver.
 * @param event event.
 * @return value that is returned from the receiver's event handler.
 */
// reimplemented from QApplication so we can throw exceptions in slots
bool VApplication::notify(QObject *receiver, QEvent *event)
{
    try
    {
        return QApplication::notify(receiver, event);
    }
    catch (const VExceptionObjectError &e)
    {
        e.CriticalMessageBox(tr("Error parsing file. Program will be terminated."), mainWindow);
        abort();
    }
    catch (const VExceptionBadId &e)
    {
        e.CriticalMessageBox(tr("Error bad id. Program will be terminated."), mainWindow);
        abort();
    }
    catch (const VExceptionConversionError &e)
    {
        e.CriticalMessageBox(tr("Error can't convert value. Program will be terminated."), mainWindow);
        abort();
    }
    catch (const VExceptionEmptyParameter &e)
    {
        e.CriticalMessageBox(tr("Error empty parameter. Program will be terminated."), mainWindow);
        abort();
    }
    catch (const VExceptionWrongId &e)
    {
        e.CriticalMessageBox(tr("Error wrong id. Program will be terminated."), mainWindow);
        abort();
    }
    catch (const VException &e)
    {
        e.CriticalMessageBox(tr("Something's wrong!!"), mainWindow);
        return true;
    }
    catch (std::exception& e)
    {
      qCritical() << "Exception thrown:" << e.what();
    }
    return false;
}

//---------------------------------------------------------------------------------------------------------------------
double VApplication::toPixel(double val, const Unit &unit) const
{
    switch (unit)
    {
        case Unit::Mm:
            return (val / 25.4) * PrintDPI;
        case Unit::Cm:
            return ((val * 10.0) / 25.4) * PrintDPI;
        case Unit::Inch:
            return val * PrintDPI;
        case Unit::Px:
            return val;
        default:
            break;
    }
    return 0;
}

//---------------------------------------------------------------------------------------------------------------------
double VApplication::toPixel(double val) const
{
    return toPixel(val, _patternUnit);
}

//---------------------------------------------------------------------------------------------------------------------
double VApplication::fromPixel(double pix, const Unit &unit) const
{
    switch (unit)
    {
        case Unit::Mm:
            return (pix / PrintDPI) * 25.4;
        case Unit::Cm:
            return ((pix / PrintDPI) * 25.4) / 10.0;
        case Unit::Inch:
            return pix / PrintDPI;
        case Unit::Px:
            return pix;
        default:
            break;
    }
    return 0;
}

//---------------------------------------------------------------------------------------------------------------------
double VApplication::fromPixel(double pix) const
{
    return fromPixel(pix, _patternUnit);
}

#if QT_VERSION >= QT_VERSION_CHECK(5, 1, 0)
//---------------------------------------------------------------------------------------------------------------------
bool VApplication::TryLock(QLockFile *lock)
{
    if (lock == nullptr)
    {
        return false;
    }

    if (lock->tryLock())
    {
        return true;
    }
    else
    {
        if (lock->error() == QLockFile::LockFailedError)
        {
            // This happens if a stale lock file exists and another process uses that PID.
            // Try removing the stale file, which will fail if a real process is holding a
            // file-level lock. A false error is more problematic than not locking properly
            // on corner-case systems.
            if (lock->removeStaleLockFile() == false || lock->tryLock() == false)
            {
                return false;
            }
            else
            {
                return true;
            }
        }
        else
        {
            return false;
        }
        return false;
    }
}

#endif //QT_VERSION >= QT_VERSION_CHECK(5, 1, 0)

//---------------------------------------------------------------------------------------------------------------------
QString VApplication::translationsPath() const
{
    const QString trPath = QStringLiteral("/translations");
#ifdef Q_OS_WIN
    return QApplication::applicationDirPath() + trPath;
#else
#ifdef QT_DEBUG
    return QApplication::applicationDirPath() + trPath;
    #else
        QDir dir(QApplication::applicationDirPath() + trPath);
        if (dir.exists())
        {
            return dir.absolutePath();
        }
        else
        {
            return QStringLiteral("/usr/share/valentina/translations");
        }
    #endif
#endif
}

//---------------------------------------------------------------------------------------------------------------------
void VApplication::InitLineWidth()
{
    switch (_patternUnit)
    {
        case Unit::Mm:
            _widthMainLine = DefWidth;
            break;
        case Unit::Cm:
            _widthMainLine = DefWidth/10.0;
            break;
        case Unit::Inch:
            _widthMainLine = DefWidth/25.4;
            break;
        default:
            _widthMainLine = DefWidth;
            break;
    }
    _widthHairLine = _widthMainLine/3.0;
}

//---------------------------------------------------------------------------------------------------------------------
QString VApplication::LogDirPath() const
{
#if defined(Q_OS_WIN) || defined(Q_OS_OSX)
    const QString logDirPath = QStandardPaths::locate(QStandardPaths::GenericDataLocation, QString(),
                                                      QStandardPaths::LocateDirectory) + "Valentina";
#else
    const QString logDirPath = QStandardPaths::locate(QStandardPaths::ConfigLocation, QString(),
                                                      QStandardPaths::LocateDirectory) + organizationName();
#endif
    return logDirPath;
}

//---------------------------------------------------------------------------------------------------------------------
QString VApplication::LogPath() const
{
    return QString("%1/valentina-pid%2.log").arg(LogDirPath()).arg(qApp->applicationPid());
}

//---------------------------------------------------------------------------------------------------------------------
void VApplication::CreateLogDir() const
{
    QDir logDir(LogDirPath());
    if (logDir.exists() == false)
    {
        logDir.mkpath("."); // Create directory for log if need
    }
}

//---------------------------------------------------------------------------------------------------------------------
void VApplication::BeginLogging()
{
    log = new QFile(LogPath());
    if (log->open(QIODevice::WriteOnly | QIODevice::Truncate | QIODevice::Text))
    {
        out = new QTextStream(log);
        qInstallMessageHandler(noisyFailureMsgHandler);
#if QT_VERSION >= QT_VERSION_CHECK(5, 1, 0)
        logLock = new QLockFile(LogPath()+".lock");
        logLock->setStaleLockTime(0);
        if (TryLock(logLock))
        {
            qCDebug(vApp, "Log file %s was locked.", LogPath().toUtf8().constData());
        }
        else
        {
            qCDebug(vApp, "Failed to lock %s", LogPath().toUtf8().constData());
            qCDebug(vApp, "Error type: %d", logLock->error());
        }
#endif //QT_VERSION >= QT_VERSION_CHECK(5, 1, 0)
    }
    else
    {
        delete log;
        log = nullptr;
        qCDebug(vApp, "Error opening log file \'%s\'. All debug output redirected to console.",
                LogPath().toUtf8().constData());
    }
}

//---------------------------------------------------------------------------------------------------------------------
void VApplication::ClearOldLogs() const
{
    QStringList filters{"*.log"};
    QDir logsDir(LogDirPath());
    logsDir.setNameFilters(filters);
    logsDir.setCurrent(LogDirPath());

    const QStringList allFiles = logsDir.entryList(QDir::NoDotAndDotDot | QDir::Files);
    if (allFiles.isEmpty() == false)
    {
        qCDebug(vApp, "Clearing old logs");
        for (int i = 0; i < allFiles.size(); ++i)
        {
            QFileInfo info(allFiles.at(i));
#if QT_VERSION >= QT_VERSION_CHECK(5, 1, 0)
            QLockFile *lock = new QLockFile(info.absoluteFilePath() + ".lock");
            if (TryLock(lock))
            {
                qCDebug(vApp, "Locked file %s", info.absoluteFilePath().toUtf8().constData());
                QFile oldLog(allFiles.at(i));
                if (oldLog.remove())
                {
                    qCDebug(vApp, "Deleted %s", info.absoluteFilePath().toUtf8().constData());
                }
                else
                {
                    qCDebug(vApp, "Could not delete %s", info.absoluteFilePath().toUtf8().constData());
                }
            }
            else
            {
                qCDebug(vApp, "Failed to lock %s", info.absoluteFilePath().toUtf8().constData());
            }

            delete lock;
            lock = nullptr;
#else
            if (info.created().daysTo(QDateTime::currentDateTime()) >= 3)
            {
                QFile oldLog(allFiles.at(i));
                if (oldLog.remove())
                {
                    qCDebug(vApp, "Deleted %s", info.absoluteFilePath().toUtf8().constData());
                }
                else
                {
                    qCDebug(vApp, "Could not delete %s", info.absoluteFilePath().toUtf8().constData());
                }
            }
#endif //QT_VERSION >= QT_VERSION_CHECK(5, 1, 0)
        }
    }
    else
    {
        qCDebug(vApp, "There are no old logs.");
    }
}

//---------------------------------------------------------------------------------------------------------------------
void VApplication::setPatternUnit(const Unit &patternUnit)
{
    _patternUnit = patternUnit;
    InitLineWidth();
}

//---------------------------------------------------------------------------------------------------------------------
QWidget *VApplication::getMainWindow() const
{
    return mainWindow;
}

//---------------------------------------------------------------------------------------------------------------------
void VApplication::setMainWindow(QWidget *value)
{
    SCASSERT(value != nullptr)
    mainWindow = value;
}

//---------------------------------------------------------------------------------------------------------------------
bool VApplication::getOpeningPattern() const
{
    return openingPattern;
}

//---------------------------------------------------------------------------------------------------------------------
void VApplication::setOpeningPattern()
{
    openingPattern = !openingPattern;
}

//---------------------------------------------------------------------------------------------------------------------
/**
 * @brief VApplication::OpenSettings get acsses to application settings.
 *
 * Because we can create object in constructor we open file separately.
 */
void VApplication::OpenSettings()
{
    settings = new VSettings(QSettings::IniFormat, QSettings::UserScope, QApplication::organizationName(),
                             QApplication::applicationName(), this);
}

//---------------------------------------------------------------------------------------------------------------------
/**
 * @brief VApplication::getSettings hide settings constructor.
 * @return pointer to class for acssesing to settings in ini file.
 */
VSettings *VApplication::getSettings()
{
    SCASSERT(settings != nullptr);
    return settings;
}

//---------------------------------------------------------------------------------------------------------------------
QGraphicsScene *VApplication::getCurrentScene() const
{
    SCASSERT(currentScene != nullptr);
    return currentScene;
}

//---------------------------------------------------------------------------------------------------------------------
void VApplication::setCurrentScene(QGraphicsScene *value)
{
    currentScene = value;
}

//---------------------------------------------------------------------------------------------------------------------
void VApplication::setOverrideCursor(const QString &pixmapPath, int hotX, int hotY)
{
#ifndef QT_NO_CURSOR
    QPixmap oldPixmap;
    if (QCursor *oldCursor = QGuiApplication::overrideCursor())
    {
        oldPixmap = oldCursor->pixmap();
    }
    QPixmap newPixmap(pixmapPath);

    QImage oldImage = oldPixmap.toImage();
    QImage newImage = newPixmap.toImage();

    if (oldImage != newImage )
    {
        QApplication::setOverrideCursor(QCursor(newPixmap, hotX, hotY));
    }
#endif
}

//---------------------------------------------------------------------------------------------------------------------
void VApplication::restoreOverrideCursor(const QString &pixmapPath)
{
#ifndef QT_NO_CURSOR
    QPixmap oldPixmap;
    if (QCursor *oldCursor = QGuiApplication::overrideCursor())
    {
        oldPixmap = oldCursor->pixmap();
    }
    QPixmap newPixmap(pixmapPath);

    QImage oldImage = oldPixmap.toImage();
    QImage newImage = newPixmap.toImage();

    if (oldImage == newImage )
    {
        QApplication::restoreOverrideCursor();
    }
#endif
}

//---------------------------------------------------------------------------------------------------------------------
QStringList VApplication::LabelLanguages()
{
    QStringList list = QStringList() << "de" // German
                                     << "en" // English
                                     << "fr" // French
                                     << "ru" // Russian
                                     << "uk" // Ukrainian
                                     << "hr" // Croatian
                                     << "sr" // Serbian
                                     << "bs"; // Bosnian
    return list;
}

//---------------------------------------------------------------------------------------------------------------------
void VApplication::StartLogging()
{
#if QT_VERSION < QT_VERSION_CHECK(5, 3, 0)

#if QT_VERSION < QT_VERSION_CHECK(5, 2, 0)
    // Qt < 5.2 didn't feature categorized logging
    // Do nothing
#else
    // In Qt 5.2 need manualy enable debug information for categories. This work
    // because Qt doesn't provide debug information for categories itself. And in this
    // case will show our messages. Another situation with Qt 5.3 that has many debug
    // messages itself. We don't need this information and can turn on later if need.
    // But here Qt already show our debug messages without enabling.
    QLoggingCategory::setFilterRules("*.debug=true\n");
#endif // QT_VERSION < QT_VERSION_CHECK(5, 2, 0)

#endif // QT_VERSION < QT_VERSION_CHECK(5, 3, 0)

    CreateLogDir();
    BeginLogging();
    ClearOldLogs();
#if defined(Q_OS_WIN) && defined(Q_CC_GNU)
    ClearOldReports();
#endif // defined(Q_OS_WIN) && defined(Q_CC_GNU)
}

//---------------------------------------------------------------------------------------------------------------------
QTextStream *VApplication::LogFile()
{
    return out;
}

//---------------------------------------------------------------------------------------------------------------------
const VTranslateVars *VApplication::TrVars()
{
    return trVars;
}

//---------------------------------------------------------------------------------------------------------------------
void VApplication::InitTrVars()
{
    trVars = new VTranslateVars(getSettings());
}

#if defined(Q_OS_WIN) && defined(Q_CC_GNU)
//---------------------------------------------------------------------------------------------------------------------
void VApplication::ClearOldReports() const
{
    const QString reportsDir = QString("%1/reports").arg(qApp->applicationDirPath());
    QDir reports(reportsDir);
    if (reports.exists())
    {
        QStringList filters{"*.log", "*.RPT"};
        QDir logsDir(reportsDir);
        logsDir.setNameFilters(filters);
        logsDir.setCurrent(reportsDir);

        const QStringList allFiles = logsDir.entryList(QDir::NoDotAndDotDot | QDir::Files);
        if (allFiles.isEmpty() == false)
        {
            const QDateTime now = QDateTime::currentDateTime();
            for (int i = 0; i < allFiles.size(); ++i)
            {
                QFileInfo info(allFiles.at(i));
                if (info.created().daysTo(now) > 30)
                {
                    QFile(allFiles.at(i)).remove();
                }
            }
        }
    }
}

//---------------------------------------------------------------------------------------------------------------------
void VApplication::GatherLogs() const
{
    QTextStream *out = nullptr;
    QFile *log = new QFile(QString("%1/valentina.log").arg(LogDirPath()));
    if (log->open(QIODevice::WriteOnly | QIODevice::Truncate | QIODevice::Text))
    {
        out = new QTextStream(log);

        QStringList filters{"*.log"};
        QDir logsDir(LogDirPath());
        logsDir.setNameFilters(filters);
        logsDir.setCurrent(LogDirPath());

        const QStringList allFiles = logsDir.entryList(QDir::NoDotAndDotDot | QDir::Files);
        if (allFiles.isEmpty() == false)
        {
            for (int i = 0; i < allFiles.size(); ++i)
            {
                QFileInfo info(allFiles.at(i));
                if (info.fileName() == "valentina.log")
                {
                    continue;
                }
                QLockFile *logLock = new QLockFile(info.absoluteFilePath()+".lock");
                logLock->setStaleLockTime(0);
                if (TryLock(logLock))
                {
                    *out <<"--------------------------" << endl;
                    QFile logFile(info.absoluteFilePath());
                    if (logFile.open(QIODevice::ReadOnly | QIODevice::Text))
                    {
                        QTextStream in(&logFile);
                        while (!in.atEnd())
                        {
                            *out << in.readLine() << endl;
                        }
                        logFile.close();
                    }
                    else
                    {
                        *out << "Log file error:" + logFile.errorString() << endl;
                    }
                }
                else
                {
                    *out << "Could not lock" << info.absoluteFilePath() << ".";
                }
                delete logLock;
            }
        }
        else
        {
            *out << "Could not find logs.";
        }
        log->close();
    }
    delete out;
    delete log;
}

//---------------------------------------------------------------------------------------------------------------------
// Catch exception and create report. Use if program build with Mingw compiler.
// See more about catcher https://github.com/jrfonseca/drmingw/blob/master/README.md
void VApplication::DrMingw()
{
    QFile drmingw("exchndl.dll");
    if (drmingw.exists())
    {// If don't want create reports just delete exchndl.dll from installer
        LoadLibrary(L"exchndl.dll");
    }
}

//---------------------------------------------------------------------------------------------------------------------
void VApplication::CollectReports() const
{
    // Seek file "binary_name.RPT"
    const QString reportName = QString("%1/%2.RPT").arg(applicationDirPath())
            .arg(QFileInfo(arguments().at(0)).baseName());
    QFile reportFile(reportName);
    if (reportFile.exists())
    { // Hooray we have found crash
        if (settings == nullptr)
        {
            return;// Settings was not opened.
        }

        if (settings->GetSendReportState())
        { // Try send report
            // Remove gist.json file before close app.
            connect(this, &VApplication::aboutToQuit, this, &VApplication::CleanGist, Qt::UniqueConnection);
            SendReport(reportName);
        }
        else
        { // Just collect report to /reports directory
            CollectReport(reportName);
        }
    }
}

//---------------------------------------------------------------------------------------------------------------------
void VApplication::CollectReport(const QString &reportName) const
{
    const QString reportsDir = QString("%1/reports").arg(qApp->applicationDirPath());
    QDir reports(reportsDir);
    if (reports.exists() == false)
    {
        reports.mkpath("."); // Create directory for reports if need
    }

    const QDateTime now = QDateTime::currentDateTime();
    const QString timestamp = now.toString(QLatin1String("yyyy.MM.dd-hh_mm_ss"));
    QString filename = QString("%1/reports/crash-%2.RPT").arg(qApp->applicationDirPath()).arg(timestamp);

    QFile reportFile(reportName);
    reportFile.copy(filename); // Collect new crash
    reportFile.remove(); // Clear after yourself

    filename = QString("%1/reports/log-%2.log").arg(qApp->applicationDirPath()).arg(timestamp);
    GatherLogs();
    QFile logFile(QString("%1/valentina.log").arg(LogDirPath()));
    logFile.copy(filename); // Collect log
}

//---------------------------------------------------------------------------------------------------------------------
void VApplication::CleanGist() const
{
    QFile gistFile(GistFileName);
    if (gistFile.exists())
    {
        gistFile.remove();
    }
}

//---------------------------------------------------------------------------------------------------------------------
void VApplication::SendReport(const QString &reportName) const
{
    QString content;
    QFile reportFile(reportName);
    if (reportFile.open(QIODevice::ReadOnly | QIODevice::Text))
    {
        content = ReadFileForSending(reportFile);
        reportFile.close();
    }
    else
    {
        content = "RPT file error:" + reportFile.errorString() + "\r\n";
    }

    // Additional information
    content.append(QString("-------------------------------")+"\r\n");
    content.append(QString("Version:%1").arg(APP_VERSION)+"\r\n");
    content.append(QString("Build revision:%1").arg(BUILD_REVISION)+"\r\n");
    content.append(QString("Based on Qt %2 (32 bit)").arg(QT_VERSION_STR)+"\r\n");
    content.append(QString("Built on %3 at %4").arg(__DATE__).arg(__TIME__)+"\r\n");
    content.append(QString("Web site:http://www.valentina-project.org/ ")+"\r\n");
    content.append("\r\n");

    // Creating json with report
    // Example:
    //{
    //  "description":"Crash report",
    //  "public":"true",
    //  "files":{
    //      "valentina.RPT":{
    //          "content":"Report text here"
    //      }
    //  }
    //}

    // Useful to know when crash was created
    const QDateTime now = QDateTime::currentDateTime();
    const QString timestamp = now.toString(QLatin1String("yyyy/MM/dd hh:mm:ss:zzz"));
    const QString report = QString("Crash report was created %2").arg(timestamp);

    QJsonObject reportObject;
    reportObject.insert(QStringLiteral("description"), QJsonValue(report));
    reportObject.insert(QStringLiteral("public"), QJsonValue(QString("true")));

    content.append(QString("\r\n-------------------------------\r\n"));
    content.append(QString("Log:")+"\r\n");

    GatherLogs();
    QFile logFile(QString("%1/valentina.log").arg(LogDirPath()));
    if (logFile.open(QIODevice::ReadOnly | QIODevice::Text))
    {
        const QString logContent = ReadFileForSending(logFile);
        if (logContent.isEmpty())
        {
            content.append("Log file is empty.");
        }
        else
        {
            content.append(logContent);
        }
        logFile.close();
    }
    else
    {
        content.append("\r\n Log file error:" + logFile.errorString() + "\r\n");
    }

    const QString contentSection = QStringLiteral("content");
    QJsonObject contentObject;
    contentObject.insert(contentSection, QJsonValue(content));

    const QString filesSection = QStringLiteral("files");
    QJsonObject fileObject;
    fileObject.insert(QFileInfo(reportName).fileName(), QJsonValue(contentObject));
    reportObject.insert(filesSection, QJsonValue(fileObject));

    QFile gistFile(GistFileName);
    if (!gistFile.open(QIODevice::WriteOnly | QIODevice::Truncate | QIODevice::Text))
    {
        qDebug("Couldn't open gist file.");
        return;
    }

    // Save data to file
    QJsonDocument saveRep(reportObject);
    gistFile.write(saveRep.toJson());
    gistFile.close();

    const QString curl = QString("%1/curl.exe").arg(qApp->applicationDirPath());
    QFile curlFile(curl);
    if (curlFile.exists())
    {// Trying send report
        // Change token if need
        const QStringList token = QStringList()<<"78"<<"5e"<<"02"<<"bd"<<"41"<<"e9"<<"6a"<<"63"<<"ab"<<"18"<<"09"<<"2f"
                                               <<"13"<<"cf"<<"48"<<"b4"<<"75"<<"6a"<<"42"<<"39";

        const QString arg = QString("curl.exe -k -H \"Authorization: bearer ")+token.join("")+
                            QString("\" -H \"Accept: application/json\" -H \"Content-type: application/json\" -X POST "
                                    "--data @gist.json https://api.github.com/gists");
        QProcess::startDetached(arg);
        reportFile.remove();// Clear after yourself
    }
    else
    {// We can not send than just collect
        CollectReport(reportName);
    }
    curlFile.close();
}

//---------------------------------------------------------------------------------------------------------------------
QString VApplication::ReadFileForSending(QFile &file) const
{
    QString content;
    QTextStream in(&file);
    while (!in.atEnd())
    {
        content.append(in.readLine()+"\r\n");// Windows end of line
    }
    return content;
}
#endif //defined(Q_OS_WIN) && defined(Q_CC_GNU)