/*

 * Hedgewars, a free turn based strategy game

 * Copyright (c) 2004-2012 Andrey Korotaev <unC0Rr@gmail.com>

 *

 * This program 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; version 2 of the License

 *

 * This program 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 this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA

 */

#include <QHBoxLayout>

#include <QLineEdit>

#include <QTextBrowser>

#include <QLabel>

#include <QHttp>

#include <QSysInfo>

#include <QDebug>

#include <QBuffer>

#include <QApplication>

#include <QDesktopWidget>

#include <QNetworkReply>

#include <QProcess>

#include <QMessageBox>

#include <string>

#ifdef Q_WS_WIN

#define WINVER 0x0500

#include <windows.h>

#else

#include <unistd.h>

#include <sys/types.h>

#endif

#ifdef Q_WS_MAC

#include <sys/sysctl.h>

#endif

#include <stdint.h>

#include "pagefeedback.h"

#include "hwconsts.h"

QLayout * PageFeedback::bodyLayoutDefinition()

{

    QVBoxLayout * pageLayout = new QVBoxLayout();

    QHBoxLayout * summaryLayout = new QHBoxLayout();

    QHBoxLayout * emailLayout = new QHBoxLayout();

    QHBoxLayout * combinedTopLayout = new QHBoxLayout();

    info = new QLabel();

    info->setText(

        "<style type=\"text/css\">"

        "a { color: #fc0; }"

        "b { color: #0df; }"

        "</style>"

        "<div align=\"center\"><h1>Please give us a feedback!</h1>"

        "<h3>We are always happy about suggestions, ideas or bug reports.<h3>"

        "<h4>The feedback will be posted as a new issue on our Google Code page.<br />"

        "<b>Don't forget to mention your email or you won't be able to receive updates on this topic!</b><br /></h4>"

        //"<h4>Your email is optional, but if given, you will be notified of responses.<h4>"

        "</div>"

    );

    pageLayout->addWidget(info);

    label_summary = new QLabel();

    label_summary->setText(QLabel::tr("Summary"));

    summaryLayout->addWidget(label_summary);

    summary = new QLineEdit();

    summaryLayout->addWidget(summary);

    combinedTopLayout->addLayout(summaryLayout);

    label_email = new QLabel();

    label_email->setText(QLabel::tr("Your Email"));

    emailLayout->addWidget(label_email);

    email = new QLineEdit();

    emailLayout->addWidget(email);

    //  Email -- although implemented -- doesn't seem to work as intended.

    //  It's sent in the XML as a <issues:cc> , the <entry>, but it doesn't seem

    //  to actually do anything. If you figure out how to fix that, uncomment these lines

    //  and the line above in the 'info' QLabel to re-enable this feature.

    //  UPDATE: I found out that CC only works if that email is a member of the

    //  Google Code project. So this feature is pretty much useless atm.

    /*

    combinedTopLayout->addLayout(emailLayout);

    combinedTopLayout->insertSpacing(1, 50);

    */

    pageLayout->addLayout(combinedTopLayout);

    label_description = new QLabel();

    label_description->setText(QLabel::tr("Description"));

    pageLayout->addWidget(label_description, 0, Qt::AlignHCenter);

    description = new QTextBrowser();

    EmbedSystemInfo();

    description->setReadOnly(false);

    pageLayout->addWidget(description);

    return pageLayout;

}

void PageFeedback::EmbedSystemInfo()

{

    // Gather some information about the system and embed it into the report

    QDesktopWidget* screen = QApplication::desktop();

    QString os_version = "Operating system: ";

    QString qt_version = QString("Qt version: ") + QT_VERSION_STR + QString("\n");

    QString total_ram = "Total RAM: ";

    QString number_of_cores = "Number of cores: ";

    QString compiler_bits = "Compiler architecture: ";

    QString compiler_version = "Compiler version: ";

    QString kernel_line = "Kernel: ";

    QString screen_size = "Size of the screen(s): " +

        QString::number(screen->width()) + "x" + QString::number(screen->height()) + "\n";

    QString number_of_screens = "Number of screens: " + QString::number(screen->screenCount()) + "\n";

    std::string processor_name = "Processor: ";

    // platform specific code

#ifdef Q_WS_MACX

    number_of_cores += QString::number(sysconf(_SC_NPROCESSORS_ONLN)) + "\n";

    uint64_t memsize;

    size_t len = sizeof(memsize);

    static int mib_s[2] = { CTL_HW, HW_MEMSIZE };

    if (sysctl (mib_s, 2, &memsize, &len, NULL, 0) == 0)

        total_ram += QString::number(memsize/1024/1024) + " MB\n";

    else

        total_ram += "Error getting total RAM information\n";

    int mib[] = {CTL_KERN, KERN_OSRELEASE};

    sysctl(mib, sizeof mib / sizeof(int), NULL, &len, NULL, 0);

    char *kernelVersion = (char *)malloc(sizeof(char)*len);

    sysctl(mib, sizeof mib / sizeof(int), kernelVersion, &len, NULL, 0);

    QString kernelVersionStr = QString(kernelVersion);

    free(kernelVersion);

    int major_version = kernelVersionStr.split(".").first().toUInt() - 4;

    int minor_version = kernelVersionStr.split(".").at(1).toUInt();

    os_version += QString("Mac OS X 10.%1.%2").arg(major_version).arg(minor_version) + " ";

    switch(major_version)

    {

        case 4:  os_version += "\"Tiger\"\n"; break;

        case 5:  os_version += "\"Leopard\"\n"; break;

        case 6:  os_version += "\"Snow Leopard\"\n"; break;

        case 7:  os_version += "\"Lion\"\n"; break;

        case 8:  os_version += "\"Mountain Lion\"\n"; break;

        default: os_version += "\"Unknown version\"\n"; break;

    }

#endif

#ifdef Q_WS_WIN

    SYSTEM_INFO sysinfo;

    GetSystemInfo(&sysinfo);

    number_of_cores += QString::number(sysinfo.dwNumberOfProcessors) + "\n";

    MEMORYSTATUSEX status;

    status.dwLength = sizeof(status);

    GlobalMemoryStatusEx(&status);

    total_ram += QString::number(status.ullTotalPhys);

    switch(QSysInfo::WinVersion())

    {

        case QSysInfo::WV_2000: os_version += "Windows 2000\n"; break;

        case QSysInfo::WV_XP: os_version += "Windows XP\n"; break;

        case QSysInfo::WV_VISTA: os_version += "Windows Vista\n"; break;

        case QSysInfo::WV_WINDOWS7: os_version += "Windows 7\n"; break;

        default: os_version += "Windows (Unknown version)\n"; break;

    }

    kernel_line += "Windows kernel\n";

#endif

#ifdef Q_WS_X11

    number_of_cores += QString::number(sysconf(_SC_NPROCESSORS_ONLN)) + "\n";

    long pages = sysconf(_SC_PHYS_PAGES),

#ifndef Q_OS_FREEBSD

         available_pages = sysconf(_SC_AVPHYS_PAGES),

#else

         available_pages = 0,

#endif

         page_size = sysconf(_SC_PAGE_SIZE);

    total_ram += QString::number(pages * page_size) + "\n";

    os_version += "GNU/Linux or BSD\n";

#endif

    // uname -a

#if defined(Q_WS_X11) || defined(Q_WS_MACX)

    QProcess *process = new QProcess();

    QStringList arguments = QStringList("-a");

    process->start("uname", arguments);

    if (process->waitForFinished())

        kernel_line += QString(process->readAll());

    delete process;

#endif

    // cpu info

    quint32 registers[4];

    quint32 i;

    i = 0x80000002;

    asm volatile

      ("cpuid" : "=a" (registers[0]), "=b" (registers[1]), "=c" (registers[2]), "=d" (registers[3])

       : "a" (i), "c" (0));

    processor_name += std::string((const char *)&registers[0], 4);

    processor_name += std::string((const char *)&registers[1], 4);

    processor_name += std::string((const char *)&registers[2], 4);

    processor_name += std::string((const char *)&registers[3], 4);

    i = 0x80000003;

    asm volatile

      ("cpuid" : "=a" (registers[0]), "=b" (registers[1]), "=c" (registers[2]), "=d" (registers[3])

       : "a" (i), "c" (0));

    processor_name += std::string((const char *)&registers[0], 4);

    processor_name += std::string((const char *)&registers[1], 4);

    processor_name += std::string((const char *)&registers[2], 4);

    processor_name += std::string((const char *)&registers[3], 4);

    i = 0x80000004;

    asm volatile

      ("cpuid" : "=a" (registers[0]), "=b" (registers[1]), "=c" (registers[2]), "=d" (registers[3])

       : "a" (i), "c" (0));

    processor_name += std::string((const char *)&registers[0], 4);

    processor_name += std::string((const char *)&registers[1], 4);

    processor_name += std::string((const char *)&registers[2], 4);

    processor_name += std::string((const char *)&registers[3], 3);

    // compiler

#ifdef __GNUC__

    compiler_version += "GCC " + QString(__VERSION__) + "\n";

#else

    compiler_version += "Unknown\n";

#endif

    if(sizeof(void*) == 4)

        compiler_bits += "i386\n";

    else if(sizeof(void*) == 8)

        compiler_bits += "x86_64\n";

    // add everything to the field of text

    description->setText(

        "\n\n\n\n\n"

        "System information:\n"

        + qt_version

        + os_version

        + total_ram

        + screen_size

        + number_of_screens

        + QString::fromStdString(processor_name + "\n")

        + number_of_cores

        + compiler_version

        + compiler_bits

        + kernel_line

    );

}

QNetworkAccessManager * PageFeedback::GetNetManager()

{

    if (netManager) return netManager;

    netManager = new QNetworkAccessManager(this);

    connect(netManager, SIGNAL(finished(QNetworkReply*)), this, SLOT(NetReply(QNetworkReply*)));

    return netManager;

}

void PageFeedback::LoadCaptchaImage()

{

        QNetworkAccessManager *netManager = GetNetManager();

        QUrl captchaURL("http://hedgewars.org/feedback/?gencaptcha");

        QNetworkRequest req(captchaURL);

        genCaptchaRequest = netManager->get(req);

}

void PageFeedback::NetReply(QNetworkReply *reply)

{

    if (reply == genCaptchaRequest)

    {

        if (reply->error() != QNetworkReply::NoError)

        {

            qDebug() << "Error generating captcha image: " << reply->errorString();

            ShowErrorMessage(QMessageBox::tr("Failed to generate captcha"));

            return;

        }

        bool okay;

        QByteArray body = reply->readAll();

        captchaID = QString(body).toInt(&okay);

        if (!okay)

        {

            qDebug() << "Failed to get captcha ID: " << body;

            ShowErrorMessage(QMessageBox::tr("Failed to generate captcha"));

            return;

        }

        QString url = "http://hedgewars.org/feedback/?captcha&id=";

        url += QString::number(captchaID);

        QNetworkAccessManager *netManager = GetNetManager();

        QUrl captchaURL(url);

        QNetworkRequest req(captchaURL);

        captchaImageRequest = netManager->get(req);

    }

    else if (reply == captchaImageRequest)

    {

        if (reply->error() != QNetworkReply::NoError)

        {

            qDebug() << "Error loading captcha image: " << reply->errorString();

            ShowErrorMessage(QMessageBox::tr("Failed to download captcha"));

            return;

        }

        QByteArray imageData = reply->readAll();

        QPixmap pixmap;

        pixmap.loadFromData(imageData);

        label_captcha->setPixmap(pixmap);

        captcha_code->setText("");

    }

}

QLayout * PageFeedback::footerLayoutDefinition()

{

    QHBoxLayout * bottomLayout = new QHBoxLayout();

    QHBoxLayout * captchaLayout = new QHBoxLayout();

    QVBoxLayout * captchaInputLayout = new QVBoxLayout();

    label_captcha = new QLabel();

    label_captcha->setStyleSheet("border: 3px solid #ffcc00; border-radius: 4px");

    label_captcha->setText("<div style='width: 200px; height: 100px;'>loading<br>captcha</div>");

    captchaLayout->addWidget(label_captcha);

    label_captcha_input = new QLabel();

    label_captcha_input->setText(QLabel::tr("Type the security code:"));

    captchaInputLayout->addWidget(label_captcha_input);

    captchaInputLayout->setAlignment(label_captcha, Qt::AlignBottom);

    captcha_code = new QLineEdit();

    captcha_code->setFixedSize(165, 30);

    captchaInputLayout->addWidget(captcha_code);

    captchaInputLayout->setAlignment(captcha_code, Qt::AlignTop);

    captchaLayout->addLayout(captchaInputLayout);

    captchaLayout->setAlignment(captchaInputLayout, Qt::AlignLeft);

    captchaLayout->insertSpacing(-1, 40);

    bottomLayout->addLayout(captchaLayout);

    //TODO: create logo for send button

    BtnSend = addButton("Send Feedback", bottomLayout, 0, false);

    BtnSend->setFixedSize(120, 40);

    bottomLayout->setStretchFactor(captchaLayout, 0);

    bottomLayout->setStretchFactor(BtnSend, 1);

    return bottomLayout;

}

void PageFeedback::connectSignals()

{

    //TODO

}

void PageFeedback::ShowErrorMessage(const QString & msg)

{

    QMessageBox msgMsg(this);

    msgMsg.setIcon(QMessageBox::Warning);

    msgMsg.setWindowTitle(QMessageBox::tr("Hedgewars - Error"));

    msgMsg.setText(msg);

    msgMsg.setWindowModality(Qt::WindowModal);

    msgMsg.exec();

}

PageFeedback::PageFeedback(QWidget* parent) : AbstractPage(parent)

{

    initPage();

    netManager = NULL;

}