/**
  * Subscribe to MeteoDataManagement and provide the correct weather for the given position
  * $Id$
  * $HeadURL$
  * $Author$
  */

#include "handler_mdm_data.h"
#include "initialization.h"
#include <LtsCoordTrans/lts_coord_trans.h>
#include "settings.h"

using namespace EffectShowManagement;
//=============================================================================
HandlerMdmData::HandlerMdmData(const std::shared_ptr<DdsHandler> &ddsHandler,
                               QObject *parent)
  : QObject(parent)
  , m_ddsHandler(ddsHandler)
  , m_logger(getLogger("HandlerMdmData"))
{
}

//=============================================================================
bool HandlerMdmData::init()
{
  DEBUG_LOG(m_logger) << "init() HandlerMdmData";
  auto dtcMdm = m_ddsHandler->dtcMdm();

  connect(dtcMdm.get(), &MeteoDataManagement::Interface::Dtc::meteoDataChanged,
          this, &HandlerMdmData::onMeteoDataChanged);

  // Get current data for all weather data
  {
    auto cb = [this](const MeteoDataManagement::MeteoData & meteoData)
    {
      onMeteoDataChanged(meteoData, DataModification::eAdded);
    };
    if (!dtcMdm->meteoDatas(cb))
      return false;
  }

  return true;
}
//=============================================================================
bool HandlerMdmData::getNearestWeather(const Core::GeoPosition2D &pos,
                                       MeteoDataManagement::MeteoData &data) const
{
  const LtsCoordTrans::UtmCoordinate utm(LtsCoordTrans::UtmCoordinate::fromGeographic(pos.lon(), pos.lat()));
  double nearestDistanceSquared = std::numeric_limits<double>::max();

  bool found = false;
  for (const auto &md : qAsConst(m_meteoData))
  {
    if (md.isStaticMeteoData())
      continue;

    const double distanceSquared = LtsCoordTrans::squareDistance(utm, md.pos().lon(), md.pos().lat());

    if (distanceSquared < nearestDistanceSquared)
    {
      found = true;
      data  = md;
      nearestDistanceSquared = distanceSquared;
    }
  }
  return found;
}
//-----------------------------------------------------------------------------
void HandlerMdmData::onMeteoDataChanged(const MeteoDataManagement::MeteoData &data, DataModification modType)
{
  switch (modType)
  {
  case DataModification::eRemoved:
    m_meteoData.remove(data.id());
    break;
  case DataModification::eAdded:
  case DataModification::eModified:
    m_meteoData[data.id()] = data;
    break;
  }
}