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#include "bearermonitor.h"

#include "sessionwidget.h"

#include <QDebug>

#include <QMessageBox>

#ifdef Q_OS_WIN

#include <winsock2.h>

#undef interface

#ifndef NS_NLA

#define NS_NLA 15

#endif

#endif

BearerMonitor::BearerMonitor(QWidget *parent)

:   QWidget(parent)

{

    setupUi(this);

#if defined(Q_WS_MAEMO_5) || defined(Q_WS_MAEMO_6)

    newSessionButton->hide();

    deleteSessionButton->hide();

#else

    delete tabWidget->currentWidget();

    sessionGroup->hide();

#endif

#if defined (Q_OS_SYMBIAN) || defined(Q_OS_WINCE) || defined(Q_WS_MAEMO_5) || defined(Q_WS_MAEMO_6)

    setWindowState(Qt::WindowMaximized);

#endif

    updateConfigurations();

#if !defined(Q_WS_MAEMO_5) && !defined(Q_WS_MAEMO_6)

    onlineStateChanged(!manager.allConfigurations(QNetworkConfiguration::Active).isEmpty());

#endif

    QNetworkConfiguration defaultConfiguration = manager.defaultConfiguration();

    for (int i = 0; i < treeWidget->topLevelItemCount(); ++i) {

        QTreeWidgetItem *item = treeWidget->topLevelItem(i);

        if (item->data(0, Qt::UserRole).toString() == defaultConfiguration.identifier()) {

            treeWidget->setCurrentItem(item);

            showConfigurationFor(item);

            break;

        }

    }

    connect(&manager, SIGNAL(configurationAdded(const QNetworkConfiguration&)),

            this, SLOT(configurationAdded(const QNetworkConfiguration&)));

    connect(&manager, SIGNAL(configurationRemoved(const QNetworkConfiguration&)),

            this, SLOT(configurationRemoved(const QNetworkConfiguration&)));

    connect(&manager, SIGNAL(configurationChanged(const QNetworkConfiguration&)),

            this, SLOT(configurationChanged(const QNetworkConfiguration)));

    connect(&manager, SIGNAL(updateCompleted()), this, SLOT(updateConfigurations()));

#ifdef Q_OS_WIN

    connect(registerButton, SIGNAL(clicked()), this, SLOT(registerNetwork()));

    connect(unregisterButton, SIGNAL(clicked()), this, SLOT(unregisterNetwork()));

#else

    nlaGroup->hide();

#endif

    connect(treeWidget, SIGNAL(itemActivated(QTreeWidgetItem*,int)),

            this, SLOT(createSessionFor(QTreeWidgetItem*)));

    connect(treeWidget, SIGNAL(currentItemChanged(QTreeWidgetItem*,QTreeWidgetItem*)),

            this, SLOT(showConfigurationFor(QTreeWidgetItem*)));

    connect(newSessionButton, SIGNAL(clicked()),

            this, SLOT(createNewSession()));

#if !defined(Q_WS_MAEMO_5) && !defined(Q_WS_MAEMO_6)

    connect(deleteSessionButton, SIGNAL(clicked()),

            this, SLOT(deleteSession()));

#endif

    connect(scanButton, SIGNAL(clicked()),

            this, SLOT(performScan()));

}

BearerMonitor::~BearerMonitor()

{

}

static void updateItem(QTreeWidgetItem *item, const QNetworkConfiguration &config)

{

    item->setText(0, config.name());

    item->setData(0, Qt::UserRole, config.identifier());

    QFont font = item->font(1);

    font.setBold((config.state() & QNetworkConfiguration::Active) == QNetworkConfiguration::Active);

    item->setFont(0, font);

}

void BearerMonitor::configurationAdded(const QNetworkConfiguration &config, QTreeWidgetItem *parent)

{

    QTreeWidgetItem *item = new QTreeWidgetItem;

    updateItem(item, config);

    if (parent)

        parent->addChild(item);

    else

        treeWidget->addTopLevelItem(item);

    if (config.type() == QNetworkConfiguration::ServiceNetwork) {

        foreach (const QNetworkConfiguration &child, config.children())

            configurationAdded(child, item);

    }

}

void BearerMonitor::configurationRemoved(const QNetworkConfiguration &config)

{

    for (int i = 0; i < treeWidget->topLevelItemCount(); ++i) {

        QTreeWidgetItem *item = treeWidget->topLevelItem(i);

        if (item->data(0, Qt::UserRole).toString() == config.identifier()) {

            delete item;

            break;

        }

    }

}

void BearerMonitor::configurationChanged(const QNetworkConfiguration &config)

{

    for (int i = 0; i < treeWidget->topLevelItemCount(); ++i) {

        QTreeWidgetItem *item = treeWidget->topLevelItem(i);

        if (item->data(0, Qt::UserRole).toString() == config.identifier()) {

            updateItem(item, config);

            if (config.type() == QNetworkConfiguration::ServiceNetwork)

                updateSnapConfiguration(item, config);

            if (item == treeWidget->currentItem())

                showConfigurationFor(item);

            break;

        }

    }

}

void BearerMonitor::updateSnapConfiguration(QTreeWidgetItem *parent, const QNetworkConfiguration &snap)

{

    QMap<QString, QTreeWidgetItem *> itemMap;

        itemMap.insert(item->data(0, Qt::UserRole).toString(), item);

    QList<QNetworkConfiguration> allConfigurations = snap.children();

    while (!allConfigurations.isEmpty()) {

        QNetworkConfiguration config = allConfigurations.takeFirst();

        QTreeWidgetItem *item = itemMap.take(config.identifier());

        if (item) {

            updateItem(item, config);

            if (config.type() == QNetworkConfiguration::ServiceNetwork)

                updateSnapConfiguration(item, config);

        } else {

            configurationAdded(config, parent);

        }

    }

}

void BearerMonitor::updateConfigurations()

{

    progressBar->hide();

    scanButton->show();

    QList<QTreeWidgetItem *> items = treeWidget->findItems(QLatin1String("*"), Qt::MatchWildcard);

    QMap<QString, QTreeWidgetItem *> itemMap;

    while (!items.isEmpty()) {

        QTreeWidgetItem *item = items.takeFirst();

        itemMap.insert(item->data(0, Qt::UserRole).toString(), item);

    }

    QList<QNetworkConfiguration> allConfigurations = manager.allConfigurations();

    while (!allConfigurations.isEmpty()) {

        QNetworkConfiguration config = allConfigurations.takeFirst();

        QTreeWidgetItem *item = itemMap.take(config.identifier());

        if (item) {

            updateItem(item, config);

            if (config.type() == QNetworkConfiguration::ServiceNetwork)

                updateSnapConfiguration(item, config);

        } else {

            configurationAdded(config);

        }

    }

}

void BearerMonitor::onlineStateChanged(bool isOnline)

{

    if (isOnline)

#if defined(Q_WS_MAEMO_5) || defined(Q_WS_MAEMO_6)

        QMessageBox::information(this, "Connection state changed", "Online", QMessageBox::Close);

    else

        QMessageBox::information(this, "Connection state changed", "Offline", QMessageBox::Close);

#else

        onlineState->setText(tr("Online"));

    else

        onlineState->setText(tr("Offline"));

#endif

}

#ifdef Q_OS_WIN

void BearerMonitor::registerNetwork()

{

    QTreeWidgetItem *item = treeWidget->currentItem();

    if (!item) return;

    QNetworkConfiguration configuration =

        manager.configurationFromIdentifier(item->data(0, Qt::UserRole).toString());

    const QString name = configuration.name();

    qDebug() << "Registering" << name << "with system";

    WSAQUERYSET networkInfo;

    memset(&networkInfo, 0, sizeof(networkInfo));

    networkInfo.dwSize = sizeof(networkInfo);

    networkInfo.lpszServiceInstanceName = (LPWSTR)name.utf16();

    networkInfo.dwNameSpace = NS_NLA;

    if (WSASetService(&networkInfo, RNRSERVICE_REGISTER, 0) == SOCKET_ERROR)

        qDebug() << "WSASetService(RNRSERVICE_REGISTER) returned" << WSAGetLastError();

}

void BearerMonitor::unregisterNetwork()

{

    QTreeWidgetItem *item = treeWidget->currentItem();

    if (!item) return;

    QNetworkConfiguration configuration =

        manager.configurationFromIdentifier(item->data(0, Qt::UserRole).toString());

    const QString name = configuration.name();

    qDebug() << "Unregistering" << name << "with system";

    WSAQUERYSET networkInfo;

    memset(&networkInfo, 0, sizeof(networkInfo));

    networkInfo.dwSize = sizeof(networkInfo);

    networkInfo.lpszServiceInstanceName = (LPWSTR)name.utf16();

    networkInfo.dwNameSpace = NS_NLA;

    if (WSASetService(&networkInfo, RNRSERVICE_DELETE, 0) == SOCKET_ERROR)

        qDebug() << "WSASetService(RNRSERVICE_DELETE) returned" << WSAGetLastError();

}

#endif

void BearerMonitor::showConfigurationFor(QTreeWidgetItem *item)

{

    QString identifier;

    if (item)

        identifier = item->data(0, Qt::UserRole).toString();

    QNetworkConfiguration conf = manager.configurationFromIdentifier(identifier);

    switch (conf.state()) {

    case QNetworkConfiguration::Active:

        configurationState->setText(tr("Active"));

        break;

    case QNetworkConfiguration::Discovered:

        configurationState->setText(tr("Discovered"));

        break;

    case QNetworkConfiguration::Defined:

        configurationState->setText(tr("Defined"));

        break;

    case QNetworkConfiguration::Undefined:

        configurationState->setText(tr("Undefined"));

        break;

    default:

        configurationState->setText(QString());

    }

    switch (conf.type()) {

    case QNetworkConfiguration::InternetAccessPoint:

        configurationType->setText(tr("Internet Access Point"));

        break;

    case QNetworkConfiguration::ServiceNetwork:

        configurationType->setText(tr("Service Network"));

        break;

    case QNetworkConfiguration::UserChoice:

        configurationType->setText(tr("User Choice"));

        break;

    case QNetworkConfiguration::Invalid:

        configurationType->setText(tr("Invalid"));

        break;

    default:

        configurationType->setText(QString());

    }

    switch (conf.purpose()) {

    case QNetworkConfiguration::UnknownPurpose:

        configurationPurpose->setText(tr("Unknown"));

        break;

    case QNetworkConfiguration::PublicPurpose:

        configurationPurpose->setText(tr("Public"));

        break;

    case QNetworkConfiguration::PrivatePurpose:

        configurationPurpose->setText(tr("Private"));

        break;

    case QNetworkConfiguration::ServiceSpecificPurpose:

        configurationPurpose->setText(tr("Service Specific"));

        break;

    default:

        configurationPurpose->setText(QString());

    }

    configurationIdentifier->setText(conf.identifier());

    configurationRoaming->setText(conf.isRoamingAvailable() ? tr("Available") : tr("Not available"));

    configurationChildren->setText(QString::number(conf.children().count()));

    configurationName->setText(conf.name());

}

void BearerMonitor::createSessionFor(QTreeWidgetItem *item)

{

    const QString identifier = item->data(0, Qt::UserRole).toString();

    QNetworkConfiguration conf = manager.configurationFromIdentifier(identifier);

    SessionWidget *session = new SessionWidget(conf);

    tabWidget->addTab(session, conf.name());

#if !defined(Q_WS_MAEMO_5) && !defined(Q_WS_MAEMO_6)

    sessionGroup->show();

#endif

    sessionWidgets.append(session);

}

void BearerMonitor::createNewSession()

{

    QTreeWidgetItem *item = treeWidget->currentItem();

    if (!item) return;

    createSessionFor(item);

}

#if !defined(Q_WS_MAEMO_5) && !defined(Q_WS_MAEMO_6)

void BearerMonitor::deleteSession()

{

    SessionWidget *session = qobject_cast<SessionWidget *>(tabWidget->currentWidget());

    if (session) {

        sessionWidgets.removeAll(session);

        delete session;

        if (tabWidget->count() == 0)

            sessionGroup->hide();

    }

}

#endif

void BearerMonitor::performScan()

{

    scanButton->hide();

    progressBar->show();

    manager.updateConfigurations();

}