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#include "qnmwifiengine_unix_p.h"

#include "qnetworkconfiguration_p.h"

#include <qnetworkconfiguration.h>

#include <QtCore/qstringlist.h>

#include <QScopedPointer>

#include <QtNetwork/qnetworkinterface.h>

#include <qnetworkmanagerservice_p.h>

#include <QNetworkInterface>

QTM_BEGIN_NAMESPACE

Q_GLOBAL_STATIC(QNmWifiEngine, nmWifiEngine)

typedef  QList<QList<uint> > QNmSettingsAddressMap;

QTM_END_NAMESPACE

Q_DECLARE_METATYPE(QTM_PREPEND_NAMESPACE(QNmSettingsAddressMap))

QTM_BEGIN_NAMESPACE

QNmWifiEngine::QNmWifiEngine(QObject *parent)

:   QNetworkSessionEngine(parent)

{

    iface = new QNetworkManagerInterface(this);

    if(!iface->isValid()) {

        return;

    }

    iface->setConnections();

    connect(iface,SIGNAL(deviceAdded(QDBusObjectPath)),

            this,SLOT(addDevice(QDBusObjectPath)));

//     connect(iface,SIGNAL(deviceRemoved(QDBusObjectPath)),

//             this,SLOT(removeDevice(QDBusObjectPath)));

    connect(iface, SIGNAL(activationFinished(QDBusPendingCallWatcher*)),

            this, SLOT(slotActivationFinished(QDBusPendingCallWatcher*)));

    QList<QDBusObjectPath> list = iface->getDevices();

    foreach(QDBusObjectPath path, list) {

        addDevice(path);

    }

    QStringList connectionServices;

    connectionServices << NM_DBUS_SERVICE_SYSTEM_SETTINGS;

    connectionServices << NM_DBUS_SERVICE_USER_SETTINGS;

    QNetworkManagerSettings *settingsiface;

    foreach (QString service, connectionServices) {

        settingsiface = new QNetworkManagerSettings(service, this);

        settingsiface->setConnections();

        connect(settingsiface,SIGNAL(newConnection(QDBusObjectPath)),

                this,(SLOT(newConnection(QDBusObjectPath))));

    }

    updated = false;

}

QNmWifiEngine::~QNmWifiEngine()

{

}

QString QNmWifiEngine::getNameForConfiguration(QNetworkManagerInterfaceDevice *devIface)

{

    QString newname;

    if (devIface->state() == NM_DEVICE_STATE_ACTIVATED) {

        QString path = devIface->ip4config().path();

        QNetworkManagerIp4Config * ipIface;

        ipIface = new QNetworkManagerIp4Config(path);

        newname = ipIface->domains().join(" ");

        delete ipIface;

    }

    //fallback to interface name

    if(newname.isEmpty())

        newname = devIface->networkInterface().name();

    return newname;

}

QList<QNetworkConfigurationPrivate *> QNmWifiEngine::getConfigurations(bool *ok)

{

    if (ok)

        *ok = false;

    if(!updated) {

        foundConfigurations.clear();

        if(knownSsids.isEmpty())

            updateKnownSsids(); 

        scanForAccessPoints();

        updateActiveConnectionsPaths();

        knownConnections();

        accessPointConnections();

        updated = true;

    }

    return foundConfigurations;

}

void QNmWifiEngine::knownConnections()

{

    QStringList connectionServices;

    connectionServices << NM_DBUS_SERVICE_SYSTEM_SETTINGS;

    connectionServices << NM_DBUS_SERVICE_USER_SETTINGS;

    QString connPath;

    QScopedPointer<QNetworkManagerSettings> settingsiface;

    foreach (QString service, connectionServices) {

        QString ident;

        settingsiface.reset(new QNetworkManagerSettings(service));

        QList<QDBusObjectPath> list = settingsiface->listConnections();

        QNetworkManagerSettingsConnection *sysIface;

        foreach(QDBusObjectPath path, list) { 

            ident = path.path();

            bool addIt = false;

            QNetworkConfigurationPrivate* cpPriv = new QNetworkConfigurationPrivate();

            sysIface = new QNetworkManagerSettingsConnection(service, path.path(), this);

            sysIface->setConnections();

            connect(sysIface, SIGNAL(removed(QString)),

                    this,SLOT(settingsConnectionRemoved(QString)));

            cpPriv->name = sysIface->getId();

            cpPriv->isValid = true;

            cpPriv->id = sysIface->getUuid();

            cpPriv->internet = true;

            cpPriv->type = QNetworkConfiguration::InternetAccessPoint;

            cpPriv->state = getStateForId(cpPriv->id);

            cpPriv->purpose = QNetworkConfiguration::PrivatePurpose;

            if(sysIface->getType() == DEVICE_TYPE_802_3_ETHERNET) {

                QString mac = sysIface->getMacAddress();

                if(!mac.length() > 2) {

                    QString devPath;

                    devPath = deviceConnectionPath(mac);

                    QNetworkManagerInterfaceDevice devIface(devPath);

                    cpPriv->serviceInterface = devIface.networkInterface();

                    QScopedPointer<QNetworkManagerInterfaceDeviceWired> devWiredIface;

                    devWiredIface.reset(new QNetworkManagerInterfaceDeviceWired(devIface.connectionInterface()->path()));

                    cpPriv->internet = devWiredIface->carrier();

                    // use this mac addy

                } else {

                    cpPriv->serviceInterface = getBestInterface( DEVICE_TYPE_802_3_ETHERNET, cpPriv->id);

                }

                cpPriv->internet = true;

                addIt = true;

            } else if(sysIface->getType() == DEVICE_TYPE_802_11_WIRELESS) {

                QString mac = sysIface->getMacAddress();;

                if(!mac.length() > 2) {

                    QString devPath;

                    devPath = deviceConnectionPath(mac);

                    QNetworkManagerInterfaceDevice devIface(devPath);

                    cpPriv->serviceInterface = devIface.networkInterface();

                    // use this mac addy

                } else {

                    cpPriv->serviceInterface = getBestInterface( DEVICE_TYPE_802_11_WIRELESS, cpPriv->id);

                }

                addIt = true;

                // get the wifi interface state first.. do we need this?

                //   QString activeAPPath = devWirelessIface->activeAccessPoint().path();

            }

            if(addIt) {

                foundConfigurations.append(cpPriv);

                configurationInterface[cpPriv->id] = cpPriv->serviceInterface.name();

                cpPriv->bearer = bearerName(cpPriv->id);

            }

        } 

    }

}

void QNmWifiEngine::accessPointConnections()

{

    QList<QDBusObjectPath> list = iface->getDevices();

    QScopedPointer<QNetworkManagerInterfaceDevice> devIface;

    foreach(QDBusObjectPath path, list) {

        devIface.reset(new QNetworkManagerInterfaceDevice(path.path()));

        if(devIface->deviceType() == DEVICE_TYPE_802_11_WIRELESS) {

            QList<QString> apList = availableAccessPoints.uniqueKeys();

            QList<QString>::const_iterator i;

            for (i = apList.constBegin(); i != apList.constEnd(); ++i) {

                QNetworkConfigurationPrivate* cpPriv;

                cpPriv = addAccessPoint( devIface->connectionInterface()->path(), availableAccessPoints[*i]);

                if(cpPriv->isValid) {

                    foundConfigurations.append(cpPriv);

                    configurationInterface[cpPriv->id] = cpPriv->serviceInterface.name();

                    cpPriv->bearer = bearerName(cpPriv->id);

                }

            }

        }

    }

}

QString QNmWifiEngine::getInterfaceFromId(const QString &id)

{

    return configurationInterface.value(id);

}

bool QNmWifiEngine::hasIdentifier(const QString &id)

{

    if (configurationInterface.contains(id))

        return true;

    return false;

}

QString QNmWifiEngine::bearerName(const QString &id)

{

    QString interface = getInterfaceFromId(id);

    QScopedPointer<QNetworkManagerInterfaceDevice> devIface;

    QList<QDBusObjectPath> list = iface->getDevices();

    foreach(QDBusObjectPath path, list) {

        devIface.reset(new QNetworkManagerInterfaceDevice(path.path()));

        if(interface == devIface->networkInterface().name()) {

            switch(devIface->deviceType()) {

                case DEVICE_TYPE_802_3_ETHERNET:

                    return QLatin1String("Ethernet");

                    break;

                case DEVICE_TYPE_802_11_WIRELESS:

                    return QLatin1String("WLAN");

                    break;

                case DEVICE_TYPE_GSM:

                    return QLatin1String("2G");

                    break;

                case DEVICE_TYPE_CDMA:

                    return QLatin1String("CDMA2000");

                    break;

                default:

                    break;

            }

        }

    }

    return QLatin1String("Unknown");

}

void QNmWifiEngine::connectToId(const QString &id)

{

    activatingConnectionPath = id;

    QStringList connectionSettings = getConnectionPathForId(id);

    if(connectionSettings.isEmpty()) {

        emit connectionError(id, OperationNotSupported);

        return;

    }

    QDBusObjectPath connectionPath(connectionSettings.at(1));

    QString interface = getInterfaceFromId(id);

    interface = QNetworkInterface::interfaceFromName(interface).hardwareAddress().toLower();

    QString devPath;

    devPath = deviceConnectionPath(interface);

    QDBusObjectPath devicePath(devPath);

    iface->activateConnection(

            connectionSettings.at(0),

            connectionPath,

            devicePath,

            connectionPath);

}

void QNmWifiEngine::disconnectFromId(const QString &id)

{

    QString activeConnectionPath = getActiveConnectionPath(id);

    if (!activeConnectionPath.isEmpty()) {

        QScopedPointer<QNetworkManagerConnectionActive> activeCon;

        activeCon.reset(new QNetworkManagerConnectionActive(activeConnectionPath));

        QScopedPointer<QNetworkManagerSettingsConnection> settingsCon;

        settingsCon.reset(new QNetworkManagerSettingsConnection(activeCon->serviceName(), activeCon->connection().path()));

        if(settingsCon->getType() ==  DEVICE_TYPE_802_3_ETHERNET) { //use depreciated value for now

            emit connectionError(id, OperationNotSupported);

        } else {

            QDBusObjectPath dbpath(activeConnectionPath);

            iface->deactivateConnection(dbpath);

            activatingConnectionPath = "";

        }

    }

}

void QNmWifiEngine::requestUpdate()

{

    updated = false;

    knownSsids.clear();

    availableAccessPoints.clear();

    emitConfigurationsChanged();

}

QNmWifiEngine *QNmWifiEngine::instance()

{

    QDBusConnection dbusConnection = QDBusConnection::systemBus();

    if (dbusConnection.isConnected()) {

        QDBusConnectionInterface *dbiface = dbusConnection.interface();

        QDBusReply<bool> reply = dbiface->isServiceRegistered("org.freedesktop.NetworkManager");

        if (reply.isValid() && reply.value())

            return nmWifiEngine();

    }

    return 0;

}

void  QNmWifiEngine::updateKnownSsids()

{

    QStringList connectionServices;

    connectionServices << NM_DBUS_SERVICE_SYSTEM_SETTINGS;

    connectionServices << NM_DBUS_SERVICE_USER_SETTINGS;

    QScopedPointer<QNetworkManagerSettings> settingsiface;

    foreach (QString service, connectionServices) {

        settingsiface.reset(new QNetworkManagerSettings(service));

        QList<QDBusObjectPath> list = settingsiface->listConnections();

        foreach(QDBusObjectPath path, list) {

            QNetworkManagerSettingsConnection sysIface(service, path.path());

            knownSsids << sysIface.getSsid();

        }

    }

}

void QNmWifiEngine::updateActiveConnectionsPaths()

{ //need to know which connection paths are currently active/connected

    QScopedPointer<QNetworkManagerInterface> dbIface;

    activeConnectionPaths.clear();

    dbIface.reset(new QNetworkManagerInterface);

    QList <QDBusObjectPath> connections = dbIface->activeConnections();

    foreach(QDBusObjectPath conpath, connections) {

           activeConnectionPaths << conpath.path();

       }

}

QNetworkConfigurationPrivate * QNmWifiEngine::addAccessPoint( const QString &iPath, QDBusObjectPath path)

{

    QScopedPointer<QNetworkManagerInterfaceDevice> devIface(new QNetworkManagerInterfaceDevice(iPath));

    QScopedPointer<QNetworkManagerInterfaceDeviceWireless> devWirelessIface(new QNetworkManagerInterfaceDeviceWireless(iPath));

    QString activeAPPath = devWirelessIface->activeAccessPoint().path();

    QScopedPointer<QNetworkManagerInterfaceAccessPoint> accessPointIface(new QNetworkManagerInterfaceAccessPoint(path.path()));

    QString ident = accessPointIface->connectionInterface()->path();

    quint32 nmState = devIface->state();

    QString ssid = accessPointIface->ssid();

    QString hwAddy = accessPointIface->hwAddress();

    QString sInterface = devIface->networkInterface().name();

    QNetworkConfigurationPrivate* cpPriv = new QNetworkConfigurationPrivate();

    bool addIt = true;

    if(addIt) {

        cpPriv->name = ssid;

        cpPriv->isValid = true;

        cpPriv->id = ident;

        cpPriv->internet = true;

        cpPriv->type = QNetworkConfiguration::InternetAccessPoint;

        cpPriv->serviceInterface = devIface->networkInterface();

        cpPriv->state = getAPState(nmState, knownSsids.contains(cpPriv->name));

        if(activeAPPath == accessPointIface->connectionInterface()->path()) {

            cpPriv->state = ( cpPriv->state | QNetworkConfiguration::Active);

        }

        if(accessPointIface->flags() == NM_802_11_AP_FLAGS_PRIVACY)

            cpPriv->purpose = QNetworkConfiguration::PrivatePurpose;

        else

            cpPriv->purpose = QNetworkConfiguration::PublicPurpose;

        return cpPriv;

    } else {

        cpPriv->isValid = false;

    }

    return cpPriv;

}

 QNetworkConfiguration::StateFlags QNmWifiEngine::getAPState(qint32 nmState, bool isKnown)

{

    QNetworkConfiguration::StateFlags state = QNetworkConfiguration::Undefined;

    // this is the state of the wifi device interface

    if(isKnown)

        state = ( QNetworkConfiguration::Defined);

    switch(nmState) { //device interface state, not AP state

    case  NM_DEVICE_STATE_UNKNOWN:

    case  NM_DEVICE_STATE_UNMANAGED:

    case NM_DEVICE_STATE_UNAVAILABLE:

        state = (QNetworkConfiguration::Undefined);

        break;

    case NM_DEVICE_STATE_DISCONNECTED:

        {

            if(isKnown)

                state = ( state  | QNetworkConfiguration::Discovered);

        }

        break;

    case NM_DEVICE_STATE_PREPARE:

    case NM_DEVICE_STATE_CONFIG:

    case NM_DEVICE_STATE_NEED_AUTH:

    case NM_DEVICE_STATE_IP_CONFIG:

        if(isKnown)

            state = ( state | QNetworkConfiguration::Discovered);

        break;

    case NM_DEVICE_STATE_ACTIVATED:

        {

            if(isKnown)

                state = ( state | QNetworkConfiguration::Discovered);

        }

        break;

    };

    return state;

}

QString QNmWifiEngine::getActiveConnectionPath(const QString &id)

{

    QStringList connectionSettings = getConnectionPathForId(id);

    QNetworkManagerInterface ifaceD;

    QList<QDBusObjectPath> connections = ifaceD.activeConnections();

    QScopedPointer<QNetworkManagerConnectionActive> conDetailsD;

    foreach(QDBusObjectPath path, connections) {

        conDetailsD.reset(new QNetworkManagerConnectionActive( path.path()));

        if(conDetailsD->connection().path() == connectionSettings.at(1)

            && conDetailsD->serviceName() == connectionSettings.at(0))

            return path.path();

    }

    return QString();

}

 QNetworkConfiguration::StateFlags QNmWifiEngine::getStateFlag(quint32 nmstate)

 {

     QNetworkConfiguration::StateFlags flag;

     switch (nmstate) {

     case  NM_DEVICE_STATE_UNKNOWN:

     case NM_DEVICE_STATE_FAILED:

     case NM_DEVICE_STATE_UNMANAGED:

         flag = (QNetworkConfiguration::Undefined);

         break;

     case NM_DEVICE_STATE_PREPARE:

     case NM_DEVICE_STATE_CONFIG:

     case NM_DEVICE_STATE_NEED_AUTH:

     case NM_DEVICE_STATE_IP_CONFIG:

     case  NM_DEVICE_STATE_UNAVAILABLE:

         flag = (QNetworkConfiguration::Defined);

         break;

     case NM_DEVICE_STATE_DISCONNECTED:

         flag = ( flag | QNetworkConfiguration::Discovered );

        break;

     case NM_DEVICE_STATE_ACTIVATED:

         {

             flag = ( flag | QNetworkConfiguration::Discovered

                      | QNetworkConfiguration::Active );

         }

         break;

     default:

         flag = ( QNetworkConfiguration::Defined);

         break;

     };

     return flag;

 }

void QNmWifiEngine::updateDeviceInterfaceState(const QString &/*path*/, quint32 nmState)

{

    if(nmState == NM_DEVICE_STATE_ACTIVATED

       || nmState == NM_DEVICE_STATE_DISCONNECTED

       || nmState == NM_DEVICE_STATE_UNAVAILABLE

       || nmState == NM_DEVICE_STATE_FAILED) {

        QNetworkConfiguration::StateFlags state = (QNetworkConfiguration::Defined);

        switch (nmState) {

                case  NM_DEVICE_STATE_UNKNOWN:

                case NM_DEVICE_STATE_FAILED:

            state = (QNetworkConfiguration::Undefined);

            emit connectionError(activatingConnectionPath, ConnectError);

            requestUpdate();

            break;

                case  NM_DEVICE_STATE_UNAVAILABLE:

            state = (QNetworkConfiguration::Defined);

            requestUpdate();

            break;

                case NM_DEVICE_STATE_DISCONNECTED:

            state = ( state | QNetworkConfiguration::Discovered );