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#include <QHash>

#include "qnetworksession_maemo_p.h"

#include <maemo_icd.h>

#include <iapconf.h>

#include <proxyconf.h>

#include <ifaddrs.h>

#include <netinet/in.h>

#include <arpa/inet.h>

QDBusArgument &operator<<(QDBusArgument &argument,

                          const QtMobility::ICd2DetailsDBusStruct &icd2)

{

    argument.beginStructure();

    argument << icd2.serviceType;

    argument << icd2.serviceAttributes;

    argument << icd2.setviceId;

    argument << icd2.networkType;

    argument << icd2.networkAttributes;

    argument << icd2.networkId;

    argument.endStructure();

    return argument;

}

const QDBusArgument &operator>>(const QDBusArgument &argument,

                                QtMobility::ICd2DetailsDBusStruct &icd2)

{

    argument.beginStructure();

    argument >> icd2.serviceType;

    argument >> icd2.serviceAttributes;

    argument >> icd2.setviceId;

    argument >> icd2.networkType;

    argument >> icd2.networkAttributes;

    argument >> icd2.networkId;

    argument.endStructure();

    return argument;

}

const QDBusArgument &operator>>(const QDBusArgument &argument,

                                QtMobility::ICd2DetailsList &detailsList)

{

     argument.beginArray();

     detailsList.clear();

     while (!argument.atEnd()) {

         QtMobility::ICd2DetailsDBusStruct element;

         argument >> element;

         detailsList.append(element);

     }

     argument.endArray();

     return argument;

}

QDBusArgument &operator<<(QDBusArgument &argument,

                          const QtMobility::ICd2DetailsList &detailsList)

{

     argument.beginArray(qMetaTypeId<QtMobility::ICd2DetailsDBusStruct>());

     for (int i = 0; i < detailsList.count(); ++i)

         argument << detailsList[i];

     argument.endArray();

     return argument;

}

QTM_BEGIN_NAMESPACE

static QHash<QString, QVariant> properties;

static QString get_network_interface();

void QNetworkSessionPrivate::iapStateChanged(const QString& iapid, uint icd_connection_state)

{

    if ((publicConfig.type() == QNetworkConfiguration::UserChoice) && opened) {

        updateIdentifier(iapid);

    }

    if (((publicConfig.type() == QNetworkConfiguration::UserChoice) && (activeConfig.d->id == iapid)) ||

        (publicConfig.d->id == iapid)) {

        switch (icd_connection_state) {

        case ICD_STATE_CONNECTING:

            updateState(QNetworkSession::Connecting);

            break;

        case ICD_STATE_CONNECTED:

            updateState(QNetworkSession::Connected);

            break;

        case ICD_STATE_DISCONNECTING:

            updateState(QNetworkSession::Closing);

            break;

        case ICD_STATE_DISCONNECTED:

            updateState(QNetworkSession::Disconnected);

            break;

        default:

            break;

        }

    }

}

void QNetworkSessionPrivate::cleanupSession(void)

{

    QObject::disconnect(q, SIGNAL(stateChanged(QNetworkSession::State)), this, SLOT(updateProxies(QNetworkSession::State)));

}

void QNetworkSessionPrivate::updateState(QNetworkSession::State newState)

{

    if (newState != state) {

        if (newState == QNetworkSession::Disconnected) {

            if (isOpen) {

                // The Session was aborted by the user or system

                lastError = QNetworkSession::SessionAbortedError;

                emit q->error(lastError);

                emit q->closed();

            }

            if (m_stopTimer.isActive()) {

                // Session was closed by calling stop()

                m_stopTimer.stop();

            }

            isOpen = false;

            opened = false;

	    currentNetworkInterface.clear();

            if (publicConfig.type() == QNetworkConfiguration::UserChoice) {

                copyConfig(publicConfig, activeConfig);

                activeConfig.d->state = QNetworkConfiguration::Defined;

            } else {

                if (!activeConfig.isValid()) {

                    // Active configuration (IAP) was removed from system

                    // => Connection was disconnected and configuration became

                    //    invalid

                    // => Also Session state must be changed to invalid

                    newState = QNetworkSession::Invalid;

                }

            }

        } else if (newState == QNetworkSession::Connected) {

            if (opened) {

                isOpen = true;

            }

	    if (publicConfig.type() == QNetworkConfiguration::UserChoice) {

		activeConfig.d->state = QNetworkConfiguration::Active;

		activeConfig.d->type = QNetworkConfiguration::InternetAccessPoint;

	    }

	    publicConfig.d->state = QNetworkConfiguration::Active;

	}

        if (newState != state) {

            state = newState;

            emit q->stateChanged(newState);

        }

    }

}

void QNetworkSessionPrivate::updateIdentifier(const QString &newId)

{

    if (publicConfig.type() == QNetworkConfiguration::UserChoice) {

	activeConfig.d->network_attrs |= ICD_NW_ATTR_IAPNAME;

	activeConfig.d->id = newId;

    } else {

	publicConfig.d->network_attrs |= ICD_NW_ATTR_IAPNAME;

	if (publicConfig.d->id != newId) {

	    qWarning() << "Your config id changed from" << publicConfig.d->id << "to" << newId;

	    publicConfig.d->id = newId;

	}

    }

}

quint64 QNetworkSessionPrivate::getStatistics(bool sent) const

{

    /* This could be also implemented by using the Maemo::Icd::statistics()

     * that gets the statistics data for a specific IAP. Change if

     * necessary.

     */

    Maemo::Icd icd;

    QList<Maemo::IcdStatisticsResult> stats_results;

    quint64 counter_rx = 0, counter_tx = 0;

    if (!icd.statistics(stats_results)) {

	return 0;

    }

    foreach (const Maemo::IcdStatisticsResult &res, stats_results) {

	if (res.params.network_attrs & ICD_NW_ATTR_IAPNAME) {

	    /* network_id is the IAP UUID */

	    if (QString(res.params.network_id.data()) == activeConfig.identifier()) {

		counter_tx = res.bytes_sent;

		counter_rx = res.bytes_received;

	    }

	} else {

	    /* We probably will never get to this branch */

	    QNetworkConfigurationPrivate *d = activeConfig.d.data();

	    if (res.params.network_id == d->network_id) {

		counter_tx = res.bytes_sent;

		counter_rx = res.bytes_received;

	    }

	}

    }

    if (sent)

	return counter_tx;

    else

	return counter_rx;

}

quint64 QNetworkSessionPrivate::bytesWritten() const

{

    return getStatistics(true);

}

quint64 QNetworkSessionPrivate::bytesReceived() const

{

    return getStatistics(false);

}

quint64 QNetworkSessionPrivate::activeTime() const

{

    if (startTime.isNull()) {

        return 0;

    }

    return startTime.secsTo(QDateTime::currentDateTime());

}

QNetworkConfiguration& QNetworkSessionPrivate::copyConfig(QNetworkConfiguration &fromConfig, QNetworkConfiguration &toConfig, bool deepCopy)

{

    if (deepCopy) {

        QNetworkConfigurationPrivate* cpPriv = new QNetworkConfigurationPrivate();

        QExplicitlySharedDataPointer<QNetworkConfigurationPrivate> ptr(cpPriv);

        toConfig.d = ptr;

    }

    toConfig.d->name = fromConfig.d->name;

    toConfig.d->isValid = fromConfig.d->isValid;

    // Note that we do not copy id field here as the publicConfig does

    // not contain a valid IAP id.

    toConfig.d->state = fromConfig.d->state;

    toConfig.d->type = fromConfig.d->type;

    toConfig.d->roamingSupported = fromConfig.d->roamingSupported;

    toConfig.d->purpose = fromConfig.d->purpose;

    toConfig.d->network_id = fromConfig.d->network_id;

    toConfig.d->iap_type = fromConfig.d->iap_type;

    toConfig.d->network_attrs = fromConfig.d->network_attrs;

    toConfig.d->service_type = fromConfig.d->service_type;

    toConfig.d->service_id = fromConfig.d->service_id;

    toConfig.d->service_attrs = fromConfig.d->service_attrs;

    toConfig.d->manager = fromConfig.d->manager;

    return toConfig;

}

/* This is called by QNetworkSession constructor and it updates the current

 * state of the configuration.

 */

void QNetworkSessionPrivate::syncStateWithInterface()

{

    /* Initially we are not active although the configuration might be in

     * connected state.

     */

    isOpen = false;

    opened = false;

    QObject::connect(&manager, SIGNAL(updateCompleted()), this, SLOT(networkConfigurationsChanged()));

    if (publicConfig.d.data()) {

	QNetworkConfigurationManagerPrivate* mgr = (QNetworkConfigurationManagerPrivate*)publicConfig.d.data()->manager;

	if (mgr) {

            connect(mgr, SIGNAL(iapStateChanged(const QString&, uint)),

                    this, SLOT(iapStateChanged(const QString&, uint)));

	} else {

            qWarning()<<"Manager object not set when trying to connect iapStateChanged signal. Your configuration object is not correctly setup, did you remember to call manager.updateConfigurations() before creating session object?";

	    state = QNetworkSession::Invalid;

	    lastError = QNetworkSession::UnknownSessionError;

	    return;

	}

    }

    QObject::connect(q, SIGNAL(stateChanged(QNetworkSession::State)), this, SLOT(updateProxies(QNetworkSession::State)));

    state = QNetworkSession::Invalid;

    lastError = QNetworkSession::UnknownSessionError;

    switch (publicConfig.type()) {

    case QNetworkConfiguration::InternetAccessPoint:

        activeConfig = publicConfig;

        break;

    case QNetworkConfiguration::ServiceNetwork:

        serviceConfig = publicConfig;

	break;

    case QNetworkConfiguration::UserChoice:

	// active config will contain correct data after open() has succeeded

        copyConfig(publicConfig, activeConfig);

	/* We create new configuration that holds the actual configuration

	 * returned by icd. This way publicConfig still contains the

	 * original user specified configuration.

	 *

	 * Note that the new activeConfig configuration is not inserted

	 * to configurationManager as manager class will get the newly

	 * connected configuration from gconf when the IAP is saved.

	 * This configuration manager update is done by IapMonitor class.

	 * If the ANY connection fails in open(), then the configuration

	 * data is not saved to gconf and will not be added to

	 * configuration manager IAP list.

	 */

#ifdef BEARER_MANAGEMENT_DEBUG

	qDebug()<<"New configuration created for" << publicConfig.identifier();

#endif

	break;

    default:

	/* Invalid configuration, no point continuing */

	return;

    }

    if (!activeConfig.isValid())

	return;

    /* Get the initial state from icd */

    Maemo::Icd icd;

    QList<Maemo::IcdStateResult> state_results;

    /* Update the active config from first connection, this is ok as icd

     * supports only one connection anyway.

     */

    if (icd.state(state_results) && !state_results.isEmpty()) {

	/* If we did not get full state back, then we are not

	 * connected and can skip the next part.

	 */

	if (!(state_results.first().params.network_attrs == 0 &&

		state_results.first().params.network_id.isEmpty())) {

	    /* If we try to connect to specific IAP and we get results back

	     * that tell the icd is actually connected to another IAP,

	     * then do not update current state etc.

	     */

	    if (publicConfig.type() == QNetworkConfiguration::UserChoice ||

		    publicConfig.d->id == state_results.first().params.network_id) {

		switch (state_results.first().state) {

		case ICD_STATE_DISCONNECTED:

                    state = QNetworkSession::Disconnected;

		    if (activeConfig.d.data())

			activeConfig.d->isValid = true;

		    break;

		case ICD_STATE_CONNECTING:

                    state = QNetworkSession::Connecting;

		    if (activeConfig.d.data())

			activeConfig.d->isValid = true;

		    break;

		case ICD_STATE_CONNECTED:

		    {

                        if (!state_results.first().error.isEmpty())

			    break;

                        const QString id = state_results.first().params.network_id;

                        QNetworkConfigurationManagerPrivate *mgr = (QNetworkConfigurationManagerPrivate*)publicConfig.d.data()->manager;

			if (mgr->accessPointConfigurations.contains(id)) {

                            //we don't want the copied data if the config is already known by the manager

                            //just reuse it so that existing references to the old data get the same update

                            QExplicitlySharedDataPointer<QNetworkConfigurationPrivate> priv = mgr->accessPointConfigurations.value(id);

                            activeConfig.d = priv;

                        }

			state = QNetworkSession::Connected;

                        activeConfig.d->network_id = state_results.first().params.network_id;

                        activeConfig.d->id = activeConfig.d->network_id;

                        activeConfig.d->network_attrs = state_results.first().params.network_attrs;

                        activeConfig.d->iap_type = state_results.first().params.network_type;

                        activeConfig.d->service_type = state_results.first().params.service_type;

                        activeConfig.d->service_id = state_results.first().params.service_id;

                        activeConfig.d->service_attrs = state_results.first().params.service_attrs;

                        activeConfig.d->type = QNetworkConfiguration::InternetAccessPoint;

                        activeConfig.d->state = QNetworkConfiguration::Active;

                        activeConfig.d->isValid = true;

                        currentNetworkInterface = get_network_interface();

			Maemo::IAPConf iap_name(activeConfig.d->id);

			QString name_value = iap_name.value("name").toString();

			if (!name_value.isEmpty())

			    activeConfig.d->name = name_value;

			else

			    activeConfig.d->name = activeConfig.d->id;

			// Add the new active configuration to manager or update the old config

			mgr = (QNetworkConfigurationManagerPrivate*)activeConfig.d.data()->manager;

			if (!(mgr->accessPointConfigurations.contains(activeConfig.d->id))) {

			    QExplicitlySharedDataPointer<QNetworkConfigurationPrivate> ptr = activeConfig.d;

			    mgr->accessPointConfigurations.insert(activeConfig.d->id, ptr);

			    QNetworkConfiguration item;

			    item.d = ptr;

			    emit mgr->configurationAdded(item);

#ifdef BEARER_MANAGEMENT_DEBUG

			    //qDebug()<<"New configuration"<<activeConfig.d->id<<"added to manager in sync";

#endif

                        }

		    }

		    break;

		case ICD_STATE_DISCONNECTING:

                    state = QNetworkSession::Closing;

		    if (activeConfig.d.data())

			activeConfig.d->isValid = true;

		    break;

		default:

                    break;

		}

	    }

	} else {

#ifdef BEARER_MANAGEMENT_DEBUG

	    qDebug() << "status_req tells icd is not connected";

#endif

	}

    } else {

#ifdef BEARER_MANAGEMENT_DEBUG

	qDebug() << "status_req did not return any results from icd";

#endif

    }

    networkConfigurationsChanged();

}

void QNetworkSessionPrivate::networkConfigurationsChanged()

{

    if (serviceConfig.isValid())

        updateStateFromServiceNetwork();

    else

        updateStateFromActiveConfig();

}

void QNetworkSessionPrivate::updateStateFromServiceNetwork()

{

    QNetworkSession::State oldState = state;

    foreach (const QNetworkConfiguration &config, serviceConfig.children()) {

        if ((config.state() & QNetworkConfiguration::Active) != QNetworkConfiguration::Active)

            continue;

        if (activeConfig != config) {

            activeConfig = config;

            emit q->newConfigurationActivated();

        }

        state = QNetworkSession::Connected;

        if (state != oldState)

            emit q->stateChanged(state);

        return;

    }

    if (serviceConfig.children().isEmpty())

        state = QNetworkSession::NotAvailable;

    else

        state = QNetworkSession::Disconnected;

    if (state != oldState)

        emit q->stateChanged(state);

}

void QNetworkSessionPrivate::clearConfiguration(QNetworkConfiguration &config)

{

    config.d->network_id.clear();

    config.d->iap_type.clear();

    config.d->network_attrs = 0;

    config.d->service_type.clear();

    config.d->service_id.clear();