/**
  * UAS Plugin Interface Factory
  * $Id$
  * $HeadURL$
  * $Author$
  * Created by Mike Wille, ESZS, 2025-04-17
  */

#include "plugin.h"
#include "plugin_instance.h"

#include <nglsettings/nglsettings_settings.h>

#include <QSettings>
#include <QDebug>


namespace UAS
{
std::shared_ptr<TrainingAreaBase::Plugin::Interface> TabPluginUAS::createInterface(TrainingAreaBase::Plugin::DataProvider *dataProvider,
                                                                                   const std::shared_ptr<TrainingAreaBase::RecvFromTab> &recvFromTabCb,
                                                                                   const std::shared_ptr<TrainingAreaBase::TxMixin> &,
                                                                                   const std::shared_ptr<TrainingAreaBase::DdsHandler> &ddsHandler,
                                                                                   NGL::Settings *settings)
{
  qDebug() << "UAS Plugin starting for ex "<<dataProvider->exerciseId()<<"!\n";

  /* set this on the machine running the TMS-IF TrainingAreaBase plugin, to the
   * ip address of the interface of the server which is in the same network as the
   * gateway machines (e.g. Salchau's tds01 is 10.5.144.32 and the gateway machines
   * are in the same subnet, so enter "10.5.144.32" on tds01) */
  const QString ip(settings->settings()->value(QStringLiteral("UAS/TmsIfIpAddress"), QStringLiteral("127.0.0.1")).toString()); // 127.0.0.1 if IA runs on the same machine
  qDebug() << "TabPluginUAS::createInterface: TMS-IF will be started on the network interface with ip address: '" << ip << "' \n";
  qputenv("CYCLONEDDS_URI", QStringLiteral("<CycloneDDS><Domain><General><Interfaces><NetworkInterface address=\"%1\"></NetworkInterface></Interfaces></General></Domain></CycloneDDS>").arg(ip).toUtf8());

  if ( !hostAvailable(ip))
    return nullptr;

  return std::make_shared<PluginInstance>(dataProvider, recvFromTabCb, ddsHandler, settings);
}

bool TabPluginUAS::hostAvailable(QString hostname) {

  // Blocking call: This pauses execution until the lookup is finished
  QHostInfo info = QHostInfo::fromName(hostname);

  // Check if the lookup was successful
  if (info.error() == QHostInfo::NoError) {
    qCritical() << "Success! Host found. IP addresses:" << hostname;
    return true;
  }
  // Handle errors like 'Host not found' or 'Network unreachable'
  return false;
}

} // namespace UAS