/****************************************************************************
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: Nokia Corporation (qt-info@nokia.com)
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** This file is part of the plugins of the Qt Toolkit.
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** contained in the Technology Preview License Agreement accompanying
** this package.
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** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
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**
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** rights.  These rights are described in the Nokia Qt LGPL Exception
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** If you have questions regarding the use of this file, please contact
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** $QT_END_LICENSE$
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****************************************************************************/

#include "qnativewifiengine.h"
#include "platformdefs.h"

#include <QtCore/qmutex.h>
#include <QtCore/private/qmutexpool_p.h>
#include <QtCore/qlibrary.h>

#include <QtNetwork/private/qbearerplugin_p.h>

#include <QtCore/qdebug.h>

#ifndef QT_NO_BEARERMANAGEMENT

QT_BEGIN_NAMESPACE

static void resolveLibrary()
{
    static volatile bool triedResolve = false;

    if (!triedResolve) {
#ifndef QT_NO_THREAD
        QMutexLocker locker(QMutexPool::globalInstanceGet(&local_WlanOpenHandle));
#endif

        if (!triedResolve) {
            local_WlanOpenHandle = (WlanOpenHandleProto)
                QLibrary::resolve(QLatin1String("wlanapi.dll"), "WlanOpenHandle");
            local_WlanRegisterNotification = (WlanRegisterNotificationProto)
                QLibrary::resolve(QLatin1String("wlanapi.dll"), "WlanRegisterNotification");
            local_WlanEnumInterfaces = (WlanEnumInterfacesProto)
                QLibrary::resolve(QLatin1String("wlanapi.dll"), "WlanEnumInterfaces");
            local_WlanGetAvailableNetworkList = (WlanGetAvailableNetworkListProto)
                QLibrary::resolve(QLatin1String("wlanapi.dll"), "WlanGetAvailableNetworkList");
            local_WlanQueryInterface = (WlanQueryInterfaceProto)
                QLibrary::resolve(QLatin1String("wlanapi.dll"), "WlanQueryInterface");
            local_WlanConnect = (WlanConnectProto)
                QLibrary::resolve(QLatin1String("wlanapi.dll"), "WlanConnect");
            local_WlanDisconnect = (WlanDisconnectProto)
                QLibrary::resolve(QLatin1String("wlanapi.dll"), "WlanDisconnect");
            local_WlanScan = (WlanScanProto)
                QLibrary::resolve(QLatin1String("wlanapi.dll"), "WlanScan");
            local_WlanFreeMemory = (WlanFreeMemoryProto)
                QLibrary::resolve(QLatin1String("wlanapi.dll"), "WlanFreeMemory");
            local_WlanCloseHandle = (WlanCloseHandleProto)
                QLibrary::resolve(QLatin1String("wlanapi.dll"), "WlanCloseHandle");

            triedResolve = true;
        }
    }
}

class QNativeWifiEnginePlugin : public QBearerEnginePlugin
{
public:
    QNativeWifiEnginePlugin();
    ~QNativeWifiEnginePlugin();

    QStringList keys() const;
    QBearerEngine *create(const QString &key) const;
};

QNativeWifiEnginePlugin::QNativeWifiEnginePlugin()
{
}

QNativeWifiEnginePlugin::~QNativeWifiEnginePlugin()
{
}

QStringList QNativeWifiEnginePlugin::keys() const
{
    return QStringList() << QLatin1String("nativewifi");
}

QBearerEngine *QNativeWifiEnginePlugin::create(const QString &key) const
{
    if (key != QLatin1String("nativewifi"))
        return 0;

    resolveLibrary();

    // native wifi dll not available
    if (!local_WlanOpenHandle)
        return 0;

    QNativeWifiEngine *engine = new QNativeWifiEngine;

    // could not initialise subsystem
    if (engine && !engine->available()) {
        delete engine;
        return 0;
    }

    return engine;
}

Q_EXPORT_STATIC_PLUGIN(QNativeWifiEnginePlugin)
Q_EXPORT_PLUGIN2(qnativewifibearer, QNativeWifiEnginePlugin)

QT_END_NAMESPACE

#endif // QT_NO_BEARERMANAGEMENT