/* === This file is part of Calamares - <http://github.com/calamares> ===
 *
 *   Copyright 2010-2011, Christian Muehlhaeuser <muesli@tomahawk-player.org>
 *   Copyright 2015,      Teo Mrnjavac <teo@kde.org>
 *
 *   Calamares 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.
 *
 *   Calamares 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 Calamares. If not, see <http://www.gnu.org/licenses/>.
 */

#include <libcrashreporter-gui/CrashReporter.h>

#include "CrashReporterConfig.h"

#include <QTranslator>
#include <iostream>
#include <QApplication>
#include <QDir>
#include <QFileInfo>

#include "utils/CalamaresUtils.h"
#include "utils/Logger.h"

#include <numeric>

#ifdef Q_OS_WIN
    #include <windows.h>
    #include <unistd.h>
#endif

// code taken from http://stackoverflow.com/questions/20734831/compress-string-with-gzip-using-qcompress
static const quint32 crc_32_tab[] = { /* CRC polynomial 0xedb88320 */
    0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
    0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
    0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
    0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
    0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
    0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
    0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
    0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
    0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
    0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
    0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
    0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
    0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
    0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
    0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
    0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
    0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
    0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
    0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
    0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
    0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
    0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
    0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
    0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
    0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
    0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
    0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
    0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
    0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
    0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
    0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
    0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
    0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
    0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
    0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
    0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
    0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
    0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
    0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
    0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
    0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
    0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
    0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
};

quint32 updateCRC32(unsigned char ch, quint32 crc)
{
    return (crc_32_tab[((crc) ^ ((quint8)ch)) & 0xff] ^ ((crc) >> 8));
}

quint32 crc32buf(const QByteArray& data)
{
    return ~std::accumulate(
        data.begin(),
        data.end(),
        quint32(0xFFFFFFFF),
        [](quint32 oldcrc32, char buf){ return updateCRC32(buf, oldcrc32); });
}

QByteArray gzip_compress(const QByteArray& data)
{
    auto compressedData = qCompress(data);
    //  Strip the first six bytes (a 4-byte length put on by qCompress and a 2-byte zlib header)
    // and the last four bytes (a zlib integrity check).
    compressedData.remove(0, 6);
    compressedData.chop(4);

    QByteArray header;
    QDataStream ds1(&header, QIODevice::WriteOnly);
    // Prepend a generic 10-byte gzip header (see RFC 1952),
    ds1 << quint16(0x1f8b)
        << quint16(0x0800)
        << quint16(0x0000)
        << quint16(0x0000)
        << quint16(0x000b);

    // Append a four-byte CRC-32 of the uncompressed data
    // Append 4 bytes uncompressed input size modulo 2^32
    QByteArray footer;
    QDataStream ds2(&footer, QIODevice::WriteOnly);
    ds2.setByteOrder(QDataStream::LittleEndian);
    ds2 << crc32buf(data)
        << quint32(data.size());

    return header + compressedData + footer;
}



const char* k_usage =
    "Usage:\n"
    "  CrashReporter <dumpFilePath>\n";

int main( int argc, char* argv[] )
{
#ifdef Q_OS_WIN // log to console window
    if ( fileno( stdout ) != -1 && _get_osfhandle( fileno( stdout ) ) != -1 )
    {
        /* stdout is fine, presumably redirected to a file or pipe */
    }
    else
    {
        typedef BOOL (WINAPI * AttachConsole_t) (DWORD);
        AttachConsole_t p_AttachConsole = (AttachConsole_t) GetProcAddress( GetModuleHandleW( L"kernel32.dll" ), "AttachConsole" );

        if ( p_AttachConsole != NULL && p_AttachConsole( ATTACH_PARENT_PROCESS ) )
        {
            _wfreopen ( L"CONOUT$", L"w", stdout );
            dup2( fileno( stdout ), 1 );
            _wfreopen ( L"CONOUT$", L"w", stderr );
            dup2( fileno( stderr ), 2 );
        }
    }
#endif

    // used by some Qt stuff, eg QSettings
    // leave first! As Settings object is created quickly
    QCoreApplication::setOrganizationName( QLatin1String( CALAMARES_ORGANIZATION_NAME ) );
    QCoreApplication::setOrganizationDomain( QLatin1String( CALAMARES_ORGANIZATION_DOMAIN ) );
    QCoreApplication::setApplicationName( QLatin1String( CALAMARES_APPLICATION_NAME ) );
    QCoreApplication::setApplicationVersion( QLatin1String( CALAMARES_VERSION ) );

    QApplication app( argc, argv );
    CalamaresUtils::installTranslator( QLocale::system(), QString(), &app );

    if ( app.arguments().size() != 2 )
    {
        std::cout << k_usage;
        return 1;
    }

    CrashReporter reporter( QUrl( CRASHREPORTER_SUBMIT_URL ),  app.arguments() );

    #ifdef CRASHREPORTER_ICON
    reporter.setLogo( QPixmap( CRASHREPORTER_ICON ) );
    #endif
    reporter.setWindowTitle( CRASHREPORTER_PRODUCT_NAME );
    reporter.setText("<html><head/><body><p><span style=\" font-weight:600;\">Sorry!"
                     "</span> " CRASHREPORTER_PRODUCT_NAME " crashed. Please tell us "
                     "about it! " CRASHREPORTER_PRODUCT_NAME " has created an error "
                     "report for you that can help improve the stability in the "
                     "future. You can now send this report directly to the "
                     CRASHREPORTER_PRODUCT_NAME " developers.</p><p>Can you tell us "
                     "what you were doing when this happened?</p></body></html>");
    reporter.setBottomText(QString());

    reporter.setReportData( "BuildID", CRASHREPORTER_BUILD_ID );
    reporter.setReportData( "ProductName",  CRASHREPORTER_PRODUCT_NAME );
    reporter.setReportData( "Version", CRASHREPORTER_VERSION_STRING );
    reporter.setReportData( "ReleaseChannel", CRASHREPORTER_RELEASE_CHANNEL);

    //reporter.setReportData( "timestamp", QByteArray::number( QDateTime::currentDateTime().toTime_t() ) );



        // add parameters

//        QList<Pair> pairs;
//        pairs  //<< Pair( "BuildID", buildId.toUtf8() )
//        << Pair( )
//        //<< Pair( "Version", CalamaresUtils::appFriendlyVersion().toLocal8Bit() )
//        //<< Pair( "Vendor", "Tomahawk" )
//        //<< Pair(  )

        //            << Pair("InstallTime", "1357622062")
        //            << Pair("Theme", "classic/1.0")
        //            << Pair("Version", "30")
        //            << Pair("id", "{ec8030f7-c20a-464f-9b0e-13a3a9e97384}")
        //            << Pair("Vendor", "Mozilla")
        //            << Pair("EMCheckCompatibility", "true")
        //            << Pair("Throttleable", "0")
        //            << Pair("URL", "http://code.google.com/p/crashme/")
        //            << Pair("version", "20.0a1")
        //            << Pair("CrashTime", "1357770042")
        //            << Pair("submitted_timestamp", "2013-01-09T22:21:18.646733+00:00")
        //            << Pair("buildid", "20130107030932")
        //            << Pair("timestamp", "1357770078.646789")
        //            << Pair("Notes", "OpenGL: NVIDIA Corporation -- GeForce 8600M GT/PCIe/SSE2 -- 3.3.0 NVIDIA 313.09 -- texture_from_pixmap\r\n")
        //            << Pair("StartupTime", "1357769913")
        //            << Pair("FramePoisonSize", "4096")
        //            << Pair("FramePoisonBase", "7ffffffff0dea000")
        //            << Pair("Add-ons", "%7B972ce4c6-7e08-4474-a285-3208198ce6fd%7D:20.0a1,crashme%40ted.mielczarek.org:0.4")
        //            << Pair("SecondsSinceLastCrash", "1831736")
        //            << Pair("ProductName", "WaterWolf")
        //            << Pair("legacy_processing", "0")
        //            << Pair("ProductID", "{ec8030f7-c20a-464f-9b0e-13a3a9e97384}")

        ;

    // send log
    QFile logFile( CalamaresUtils::appLogDir().filePath( "Calamares.log" ) );
    logFile.open( QFile::ReadOnly );
    reporter.setReportData( "upload_file_calamareslog",
                            gzip_compress( logFile.readAll() ),
                            "application/x-gzip",
                            QFileInfo( logFile ).fileName().toUtf8());
    logFile.close();

    reporter.show();

    return app.exec();
}