# -*-  Mode: Python; -*-

# /*

#  * Copyright (c) 2005,2006,2007 INRIA

#  * Copyright (c) 2009 INESC Porto

#  *

#  * This program is free software; you can redistribute it and/or modify

#  * it under the terms of the GNU General Public License version 2 as

#  * published by the Free Software Foundation;

#  *

#  * This program is distributed in the hope that it will be useful,

#  * but WITHOUT ANY WARRANTY; without even the implied warranty of

#  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

#  * GNU General Public License for more details.

#  *

#  * You should have received a copy of the GNU General Public License

#  * along with this program; if not, write to the Free Software

#  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

#  *

#  * Authors: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>

#  *          Gustavo Carneiro <gjc@inescporto.pt>

#  */

import sys

import ns3

# void

# DevTxTrace (std::string context, Ptr<const Packet> p, Mac48Address address)

# {

#   std::cout << " TX to=" << address << " p: " << *p << std::endl;

# }

# void

# DevRxTrace (std::string context, Ptr<const Packet> p, Mac48Address address)

# {

#   std::cout << " RX from=" << address << " p: " << *p << std::endl;

# }

# void

# PhyRxOkTrace (std::string context, Ptr<const Packet> packet, double snr, WifiMode mode, enum WifiPreamble preamble)

# {

#   std::cout << "PHYRXOK mode=" << mode << " snr=" << snr << " " << *packet << std::endl;

# }

# void

# PhyRxErrorTrace (std::string context, Ptr<const Packet> packet, double snr)

# {

#   std::cout << "PHYRXERROR snr=" << snr << " " << *packet << std::endl;

# }

# void

# PhyTxTrace (std::string context, Ptr<const Packet> packet, WifiMode mode, WifiPreamble preamble, uint8_t txPower)

# {

#   std::cout << "PHYTX mode=" << mode << " " << *packet << std::endl;

# }

# void

# PhyStateTrace (std::string context, Time start, Time duration, enum WifiPhy::State state)

# {

#   std::cout << " state=";

#   switch (state) {

#   case WifiPhy::TX:

#     std::cout << "tx      ";

#     break;

#   case WifiPhy::SYNC:

#     std::cout << "sync    ";

#     break;

#   case WifiPhy::CCA_BUSY:

#     std::cout << "cca-busy";

#     break;

#   case WifiPhy::IDLE:

#     std::cout << "idle    ";

#     break;

#   }

#   std::cout << " start="<<start<<" duration="<<duration<<std::endl;

# }

def SetPosition(node, position):

    mobility = node.GetObject(ns3.MobilityModel.GetTypeId())

    mobility.SetPosition(position)

def GetPosition(node):

    mobility = node.GetObject(ns3.MobilityModel.GetTypeId())

    return mobility.GetPosition()

def AdvancePosition(node):

    pos = GetPosition (node);

    pos.x += 5.0

    if pos.x >= 210.0:

      return

    SetPosition(node, pos)

    ns3.Simulator.Schedule(ns3.Seconds(1.0), AdvancePosition, node)

def main(argv):

    ns3.Packet.EnablePrinting ();

    # enable rts cts all the time.

    ns3.Config.SetDefault("ns3::WifiRemoteStationManager::RtsCtsThreshold", ns3.StringValue("0"))

    # disable fragmentation

    ns3.Config.SetDefault("ns3::WifiRemoteStationManager::FragmentationThreshold", ns3.StringValue ("2200"))

    wifi = ns3.WifiHelper.Default()

    mobility = ns3.MobilityHelper()

    stas = ns3.NodeContainer()

    ap = ns3.NodeContainer()

    #NetDeviceContainer staDevs;

    packetSocket = ns3.PacketSocketHelper()

    stas.Create(2)

    ap.Create(1)

    # give packet socket powers to nodes.

    packetSocket.Install(stas)

    packetSocket.Install(ap)

    wifiPhy = ns3.YansWifiPhyHelper.Default()

    wifiChannel = ns3.YansWifiChannelHelper.Default()

    wifiPhy.SetChannel(wifiChannel.Create())

    ssid = ns3.Ssid("wifi-default")

    wifi.SetRemoteStationManager("ns3::ArfWifiManager")

    # setup stas.

    wifi.SetMac("ns3::NqstaWifiMac", 

               "Ssid", ns3.SsidValue(ssid),

               "ActiveProbing", ns3.BooleanValue(False))

    staDevs = wifi.Install(wifiPhy, stas)

    # setup ap.

    wifi.SetMac("ns3::NqapWifiMac", "Ssid", ns3.SsidValue(ssid),

                "BeaconGeneration", ns3.BooleanValue(True),

                "BeaconInterval", ns3.TimeValue(ns3.Seconds(2.5)))

    wifi.Install(wifiPhy, ap)

    # mobility.

    mobility.Install(stas)

    mobility.Install(ap)

    ns3.Simulator.Schedule(ns3.Seconds(1.0), AdvancePosition, ap.Get(0))

    socket = ns3.PacketSocketAddress()

    socket.SetSingleDevice(staDevs.Get(0).GetIfIndex())

    socket.SetPhysicalAddress(staDevs.Get(1).GetAddress())

    socket.SetProtocol(1)

    onoff = ns3.OnOffHelper("ns3::PacketSocketFactory", ns3.Address(socket))

    onoff.SetAttribute("OnTime", ns3.RandomVariableValue(ns3.ConstantVariable(42)))

    onoff.SetAttribute("OffTime", ns3.RandomVariableValue(ns3.ConstantVariable(0)))

    apps = onoff.Install(ns3.NodeContainer(stas.Get(0)))

    apps.Start(ns3.Seconds(0.5))

    apps.Stop(ns3.Seconds(43.0))

    ns3.Simulator.Stop(ns3.Seconds(44.0))

  #   Config::Connect ("/NodeList/*/DeviceList/*/Tx", MakeCallback (&DevTxTrace));

  #   Config::Connect ("/NodeList/*/DeviceList/*/Rx", MakeCallback (&DevRxTrace));

  #   Config::Connect ("/NodeList/*/DeviceList/*/Phy/RxOk", MakeCallback (&PhyRxOkTrace));

  #   Config::Connect ("/NodeList/*/DeviceList/*/Phy/RxError", MakeCallback (&PhyRxErrorTrace));

  #   Config::Connect ("/NodeList/*/DeviceList/*/Phy/Tx", MakeCallback (&PhyTxTrace));

  #   Config::Connect ("/NodeList/*/DeviceList/*/Phy/State", MakeCallback (&PhyStateTrace));

    ascii = ns3.ofstream("wifi-ap.tr")

    ns3.YansWifiPhyHelper.EnableAsciiAll(ascii)

    ns3.Simulator.Run()

    ns3.Simulator.Destroy()

    ascii.close()

    return 0

if __name__ == '__main__':

    sys.exit(main(sys.argv))