#include <QtCore/QCoreApplication>
#include <QtCore/QDebug>
#include <QtCore/QStringList>
#include <QtDBus/QtDBus>
#include <QDebug>
#include <QThread>
int main(int argc, char **argv)
{
    QCoreApplication app(argc, argv);
    // get the interface to nm
    QDBusInterface nm("org.freedesktop.NetworkManager", "/org/freedesktop/NetworkManager",
            "org.freedesktop.NetworkManager", QDBusConnection::systemBus());
    if(!nm.isValid())
    {
        qFatal("Failed to connect to the system bus");
    }
    // get all devices
    QDBusMessage msg = nm.call("GetDevices");
    qDebug() << "GetDevices reply: " << msg << endl;
    QDBusArgument arg = msg.arguments().at(0).value<QDBusArgument>();
    if(arg.currentType() != QDBusArgument::ArrayType)
    {
        qFatal("Something went wrong with getting the device list");
    }
    QList<QDBusObjectPath> pathsLst = qdbus_cast<QList<QDBusObjectPath> >(arg);
    foreach(QDBusObjectPath p, pathsLst)
    {
        qDebug() << "DEV PATH: " << p.path();
        // creating an interface used to gather this devices properties
        QDBusInterface device("org.freedesktop.NetworkManager", p.path(),
        "org.freedesktop.NetworkManager.Device", QDBusConnection::systemBus());
        // 2 is WiFi dev, see https://people.freedesktop.org/~lkundrak/nm-docs/nm-dbus-types.html#NMDeviceType
        if (device.property("DeviceType").toInt() != 2)
        {
            continue;
        }
        // we got a wifi device, let's get an according dbus interface
        QDBusInterface wifi_device("org.freedesktop.NetworkManager", p.path(),
        "org.freedesktop.NetworkManager.Device.Wireless", QDBusConnection::systemBus());
        // we need to call scan on the inteface prior to request the list of interfaces
        QMap<QString, QVariant> argList;
        QDBusMessage msg = wifi_device.call("RequestScan", argList);
        QThread::sleep(2); // not the best solution, but here we just wait for the scan
        // doing the actual call
        msg = wifi_device.call("GetAllAccessPoints");
        qDebug()<< "Answer for GetAllAccessPoints:  " << msg << endl << endl;
        // dig out the paths of the Access Point objects:
        QDBusArgument ap_list_arg = msg.arguments().at(0).value<QDBusArgument>();
        QList<QDBusObjectPath> ap_path_list = qdbus_cast<QList<QDBusObjectPath> >(ap_list_arg);
        // and iterate through the list
        foreach(QDBusObjectPath p ,ap_path_list)
        {
            // for each Access Point we create an interface
            QDBusInterface ap_interface("org.freedesktop.NetworkManager", p.path(),
            "org.freedesktop.NetworkManager.AccessPoint", QDBusConnection::systemBus());
            // and getting the name of the SSID
            qDebug() << "SSID: " << ap_interface.property("Ssid").toString();
        }
    }
    return 0;
}