/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Mobility Components.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** 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
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights.  These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qsystemnetworkinfo.h"
#include "qsysteminfocommon_p.h"
#include <QMetaType>

QTM_BEGIN_NAMESPACE
#ifndef Q_OS_SYMBIAN
Q_GLOBAL_STATIC(QSystemNetworkInfoPrivate, netInfoPrivateSingleton)
#endif

#ifdef QT_SIMULATOR
QSystemNetworkInfoPrivate *getSystemNetworkInfoPrivate() { return netInfoPrivateSingleton(); }
#endif // QT_SIMULATOR

/*!
    \class QSystemNetworkInfo
    \ingroup systeminfo
    \inmodule QtSystemInfo
    \brief The QSystemNetworkInfo class provides access to various networking status and signals.
    \since 1.0

    \reentrant

    \note Most functions in this class are reentrant on all platforms. The exceptions are listed below.
    
    \note In Symbian platform this class is not reentrant since Symbian Belle (Qt Mobility version 1.2).

    \warning On Symbian this class does not support QObject::moveToThread().

*/

/*!
    \enum QSystemNetworkInfo::NetworkStatus
    This enum describes the status of the network connection:

    \value UndefinedStatus        There is no network device, or on error.
    \value NoNetworkAvailable     There is no network available.
    \value EmergencyOnly          Emergency calls only.
    \value Searching              Searching for or connecting with the network.
    \value Busy                   Network is busy.
    \value Connected              Connected to network.
    \value HomeNetwork            On Home Network.
    \value Denied                 Network access denied.
    \value Roaming                On Roaming network.
*/

/*!
    \enum QSystemNetworkInfo::NetworkMode
    This enum describes the type of network:

    \value UnknownMode             Unknown network, or network error.
    \value GsmMode                 Global System for Mobile (GSM) network.
    \value CdmaMode                Code Division Multiple Access (CDMA) network.
    \value WcdmaMode               Wideband Code Division Multiple Access (W-CDMA) network.
    \value WlanMode                Wireless Local Area Network (WLAN) network.
    \value EthernetMode            Wired Local Area network.
    \value BluetoothMode           Bluetooth network.
    \value WimaxMode               Wimax network.
    \value LteMode                 Lte network. Since 1.2
*/

/*!
    \enum QSystemNetworkInfo::CellDataTechnology
    This enum describes the type of cellular technology:

    \value UnknownDataTechnology   Unknown cellular technology, or error.
    \value GprsDataTechnology      General Packet Radio Service (GPRS) data service.
    \value EdgeDataTechnology      Enhanced Data Rates for GSM Evolution (EDGE) data service.
    \value UmtsDataTechnology      Universal Mobile Telecommunications System (UMTS) data service.
    \value HspaDataTechnology      High Speed Packet Access (HSPA) data service.
*/

/*!
    \fn void QSystemNetworkInfo::networkStatusChanged(QSystemNetworkInfo::NetworkMode mode, QSystemNetworkInfo::NetworkStatus status)

    This signal is emitted whenever the network status of \a mode changes, specified by \a status.
    \since 1.0
*/

/*!
    \fn void QSystemNetworkInfo::networkSignalStrengthChanged(QSystemNetworkInfo::NetworkMode mode, int strength)

    This signal is emitted whenever the network \a mode signal strength changes, specified by \a strength.
    \since 1.0
*/

/*!
    \fn void QSystemNetworkInfo::currentMobileCountryCodeChanged(const QString &mcc)

    This signal is emitted whenever the Mobile Country Code changes, specified by \a mcc.
    \since 1.0
*/

/*!
    \fn void QSystemNetworkInfo::currentMobileNetworkCodeChanged(const QString &mnc)

    This signal is emitted whenever the network Mobile Network Code changes, specified by \a mnc.
    \since 1.0
*/

/*!
    \fn void QSystemNetworkInfo::networkNameChanged(QSystemNetworkInfo::NetworkMode mode,const QString & name)

    This signal is emitted whenever the network \a mode name changes, specified by \a name.
    \since 1.0
*/

/*!
    \fn void QSystemNetworkInfo::cellIdChanged(int cellId)

    This signal is emitted whenever the network cell changes, specified by \a cellId.
    \since 1.2
*/

/*!
    \fn void QSystemNetworkInfo::networkModeChanged(QSystemNetworkInfo::NetworkMode mode)

    This signal is emitted whenever the network mode changes, specified by \a mode.
    \since 1.0
*/

/*!
    \fn void QSystemNetworkInfo::cellDataTechnologyChanged(QSystemNetworkInfo::CellDataTechnology cellTech)

    This signal is emitted whenever the cellular technology changes, specified by \a cellTech.
    \since 1.2
*/

/*!
    Constructs a QSystemNetworkInfo with the given \a parent.
*/
QSystemNetworkInfo::QSystemNetworkInfo(QObject *parent)
   : QObject(parent)
{
#ifdef Q_OS_SYMBIAN
    d = new QSystemNetworkInfoPrivate();
#else
    d = netInfoPrivateSingleton();
#endif
    qRegisterMetaType<QSystemNetworkInfo::NetworkMode>("QSystemNetworkInfo::NetworkMode");
    qRegisterMetaType<QSystemNetworkInfo::NetworkStatus>("QSystemNetworkInfo::NetworkStatus");
}

/*!
    Destroys the QSystemNetworkInfo object.
*/
QSystemNetworkInfo::~QSystemNetworkInfo()
{
#ifdef Q_OS_SYMBIAN
    delete d;
#endif
}

/*!
    Returns the status of the network \a mode.
    \since 1.0
*/
QSystemNetworkInfo::NetworkStatus QSystemNetworkInfo::networkStatus(QSystemNetworkInfo::NetworkMode mode)
{
    return d->networkStatus(mode);
}

/*!
    Returns the strength of the network signal, per network \a mode , 0 - 100 linear scaling. -1 is returned
    if not available or on error.
    \since 1.0

    \warning On Symbian this function is not reentrant and must be used from main thread only.
*/
int QSystemNetworkInfo::networkSignalStrength(QSystemNetworkInfo::NetworkMode mode)
{
#ifdef Q_OS_SYMBIAN
      QSystemNetworkInfoPrivate* networkInfo = QSystemNetworkInfoPrivate::networkinfoPrivateInstance();
      QSystemNetworkInfo::NetworkStatus info = networkInfo->networkStatus(mode);
    if (info == QSystemNetworkInfo::UndefinedStatus || info == QSystemNetworkInfo::NoNetworkAvailable)
        return -1;
    int signalStrength = networkInfo->networkSignalStrength(mode);
    delete networkInfo;
    return signalStrength;
#else
    QSystemNetworkInfo::NetworkStatus info = netInfoPrivateSingleton()->networkStatus(mode);
    if (info == QSystemNetworkInfo::UndefinedStatus || info == QSystemNetworkInfo::NoNetworkAvailable)
        return -1;

    return netInfoPrivateSingleton()->networkSignalStrength(mode);
#endif
}

/*!
    \property QSystemNetworkInfo::cellId
    \brief The devices Cell ID

    Returns the Cell ID of the connected tower or based station. -1 is returned if not available or on error.
    \since 1.2
*/
int QSystemNetworkInfo::cellId()
{
    return d->cellId();
}

/*!
    \property QSystemNetworkInfo::locationAreaCode
    \brief The LAC.

    Returns the location area code of the current cellular radio network. -1 is returned if not available
    or on error.
    \since 1.0
*/
int QSystemNetworkInfo::locationAreaCode()
{
    return d->locationAreaCode();
}

/*!
    \property QSystemNetworkInfo::currentMobileCountryCode
    \brief The current MCC.

    Returns the current Mobile Country Code. An empty string is returned if not available or on error.
    \since 1.0
*/
QString QSystemNetworkInfo::currentMobileCountryCode()
{
    return d->currentMobileCountryCode();
}

/*!
    \property QSystemNetworkInfo::currentMobileNetworkCode
    \brief The current MNC.

    Returns the current Mobile Network Code. An empty string is returned if not available or on error.
    \since 1.0
*/
QString QSystemNetworkInfo::currentMobileNetworkCode()
{
    return d->currentMobileNetworkCode();
}

/*!
    \property QSystemNetworkInfo::homeMobileCountryCode
    \brief The home MNC.

    Returns the home Mobile Country Code. An empty string is returned if not available or on error.
    \since 1.0
*/
QString QSystemNetworkInfo::homeMobileCountryCode()
{
    return d->homeMobileCountryCode();
}

/*!
    \property QSystemNetworkInfo::homeMobileNetworkCode
    \brief The home MCC.

    Returns the home Mobile Network Code. An empty string is returned if not available or on error.
    \since 1.0
*/
QString QSystemNetworkInfo::homeMobileNetworkCode()
{
    return d->homeMobileNetworkCode();
}

/*!
    Returns the name of the operator for the network \a mode. An empty string is returned if not
    available or on error.

    For WLAN this returns the network's current SSID.
    \since 1.0

    \warning On Symbian this function is not reentrant and must be used from main thread only.
    \warning Needs ReadDeviceData capabilities
*/
QString QSystemNetworkInfo::networkName(QSystemNetworkInfo::NetworkMode mode)
{
#ifdef Q_OS_SYMBIAN
      QSystemNetworkInfoPrivate* networkInfo = QSystemNetworkInfoPrivate::networkinfoPrivateInstance();
      QString networkName = networkInfo->networkName(mode);
      delete networkInfo;
      return networkName;
#else
    return netInfoPrivateSingleton()->networkName(mode);
#endif
}

/*!
    Returns the MAC address for the interface servicing the network \a mode. An empty string is
    returned if not available or on error.
    \since 1.0
*/
QString QSystemNetworkInfo::macAddress(QSystemNetworkInfo::NetworkMode mode)
{
    return d->macAddress(mode);
}

/*!
    Returns the first found QNetworkInterface for type \a mode. If none is found, or it can't be represented
    by QNetworkInterface (e.g. Bluetooth), an invalid QNetworkInterface object is returned.
    \since 1.0
*/
QNetworkInterface QSystemNetworkInfo::interfaceForMode(QSystemNetworkInfo::NetworkMode mode)
{
    return d->interfaceForMode(mode);
}

/*!
    \property QSystemNetworkInfo::currentMode

    Returns the current active network mode. If more than one mode is active, returns the
    default or preferred mode. If no modes are active, returns UnknownMode.
    \since 1.0
*/
QSystemNetworkInfo::NetworkMode QSystemNetworkInfo::currentMode()
{
    return d->currentMode();
}

/*!
    \internal
*/
void QSystemNetworkInfo::connectNotify(const char *signal)
{
    //check for networkSignalStrengthChanged() signal connect notification
    //This is not required on all platforms
#if defined(Q_WS_MAEMO_5)
    if (QLatin1String(signal) == SIGNAL(networkSignalStrengthChanged(QSystemNetworkInfo::NetworkMode,int))) {
        d->setWlanSignalStrengthCheckEnabled(true);
    } else
#endif // Q_WS_MAEMO_5
    if (QLatin1String(signal) == SIGNAL(currentMobileCountryCodeChanged(QString))) {
        connect(d, SIGNAL(currentMobileCountryCodeChanged(QString)),
                this, SIGNAL(currentMobileCountryCodeChanged(QString)),Qt::UniqueConnection);
    } else if (QLatin1String(signal) == SIGNAL(currentMobileNetworkCodeChanged(QString))) {
        connect(d, SIGNAL(currentMobileNetworkCodeChanged(QString)),
                this, SIGNAL(currentMobileNetworkCodeChanged(QString)),Qt::UniqueConnection);
    } else if (QLatin1String(signal) == SIGNAL(networkModeChanged(QSystemNetworkInfo::NetworkMode))) {
        connect(d, SIGNAL(networkModeChanged(QSystemNetworkInfo::NetworkMode)),
                this, SIGNAL(networkModeChanged(QSystemNetworkInfo::NetworkMode)),Qt::UniqueConnection);
    } else if (QLatin1String(signal) == SIGNAL(networkNameChanged(QSystemNetworkInfo::NetworkMode,QString))) {
        connect(d, SIGNAL(networkNameChanged(QSystemNetworkInfo::NetworkMode,QString)),
                this, SIGNAL(networkNameChanged(QSystemNetworkInfo::NetworkMode,QString)),Qt::UniqueConnection);
    } else if (QLatin1String(signal) == SIGNAL(networkSignalStrengthChanged(QSystemNetworkInfo::NetworkMode,int))) {
        connect(d, SIGNAL(networkSignalStrengthChanged(QSystemNetworkInfo::NetworkMode,int)),
                this, SIGNAL(networkSignalStrengthChanged(QSystemNetworkInfo::NetworkMode,int)),Qt::UniqueConnection);
    } else if (QLatin1String(signal) == SIGNAL(networkStatusChanged(QSystemNetworkInfo::NetworkMode,QSystemNetworkInfo::NetworkStatus))) {
        connect(d, SIGNAL(networkStatusChanged(QSystemNetworkInfo::NetworkMode,QSystemNetworkInfo::NetworkStatus)),
                this, SIGNAL(networkStatusChanged(QSystemNetworkInfo::NetworkMode,QSystemNetworkInfo::NetworkStatus)),Qt::UniqueConnection);
    } else if (QLatin1String(signal) == SIGNAL(cellIdChanged(int))) {
        connect(d, SIGNAL(cellIdChanged(int)),
                this, SIGNAL(cellIdChanged(int)),Qt::UniqueConnection);
    } else if (QLatin1String(signal) == SIGNAL(cellIdChanged(int))) {
        connect(d, SIGNAL(cellDataTechnologyChanged(QSystemNetworkInfo::CellDataTechnology)),
                this, SIGNAL(cellDataTechnologyChanged(QSystemNetworkInfo::CellDataTechnology)),Qt::UniqueConnection);
    }
}

/*!
    \internal
*/
void QSystemNetworkInfo::disconnectNotify(const char *signal)
{
    // disconnect only when there's no connections
    if (receivers(signal) > 0)
        return;

    //check for networkSignalStrengthChanged() signal disconnect notification
    //This is not required on all platforms
#if defined(Q_WS_MAEMO_5)
    if (QLatin1String(signal) == SIGNAL(networkSignalStrengthChanged(QSystemNetworkInfo::NetworkMode,int))) {
        d->setWlanSignalStrengthCheckEnabled(false);
    } else
#endif // Q_WS_MAEMO_5
    if (QLatin1String(signal) == SIGNAL(currentMobileCountryCodeChanged(QString))) {
        disconnect(d, SIGNAL(currentMobileCountryCodeChanged(QString)),
                   this, SIGNAL(currentMobileCountryCodeChanged(QString)));
    } else if (QLatin1String(signal) == SIGNAL(currentMobileNetworkCodeChanged(QString))) {
        disconnect(d, SIGNAL(currentMobileNetworkCodeChanged(QString)),
                   this, SIGNAL(currentMobileNetworkCodeChanged(QString)));
    } else if (QLatin1String(signal) == SIGNAL(networkModeChanged(QSystemNetworkInfo::NetworkMode))) {
        disconnect(d, SIGNAL(networkModeChanged(QSystemNetworkInfo::NetworkMode)),
                   this, SIGNAL(networkModeChanged(QSystemNetworkInfo::NetworkMode)));
    } else if (QLatin1String(signal) == SIGNAL(networkNameChanged(QSystemNetworkInfo::NetworkMode,QString))) {
        disconnect(d, SIGNAL(networkNameChanged(QSystemNetworkInfo::NetworkMode,QString)),
                   this, SIGNAL(networkNameChanged(QSystemNetworkInfo::NetworkMode,QString)));
    } else if (QLatin1String(signal) == SIGNAL(networkSignalStrengthChanged(QSystemNetworkInfo::NetworkMode,int))) {
        disconnect(d, SIGNAL(networkSignalStrengthChanged(QSystemNetworkInfo::NetworkMode,int)),
                   this, SIGNAL(networkSignalStrengthChanged(QSystemNetworkInfo::NetworkMode,int)));
    } else if (QLatin1String(signal) == SIGNAL(networkStatusChanged(QSystemNetworkInfo::NetworkMode,QSystemNetworkInfo::NetworkStatus))) {
        disconnect(d, SIGNAL(networkStatusChanged(QSystemNetworkInfo::NetworkMode,QSystemNetworkInfo::NetworkStatus)),
                   this, SIGNAL(networkStatusChanged(QSystemNetworkInfo::NetworkMode,QSystemNetworkInfo::NetworkStatus)));
    } else if (QLatin1String(signal) == SIGNAL(cellIdChanged(int))) {
        disconnect(d, SIGNAL(cellIdChanged(int)),
                   this, SIGNAL(cellIdChanged(int)));
    } else if (QLatin1String(signal) == SIGNAL(cellIdChanged(int))) {
        disconnect(d, SIGNAL(cellDataTechnologyChanged(QSystemNetworkInfo::CellDataTechnology)),
                   this, SIGNAL(cellDataTechnologyChanged(QSystemNetworkInfo::CellDataTechnology)));
    }
}

/*!
    \property QSystemNetworkInfo::cellDataTechnology

    Returns the current active cell data technology.

    If no data technology is active, or data technology is not supported, QSystemNetworkInfo::UnknownDataTechnology
    is returned.
    \since 1.2
*/
QSystemNetworkInfo::CellDataTechnology QSystemNetworkInfo::cellDataTechnology()
{
    return d->cellDataTechnology();
}

#include "moc_qsystemnetworkinfo.cpp"

QTM_END_NAMESPACE