/**
  * Helper Class for handling Entity IdentifierStructs
  * $Id$
  * $HeadURL$
  * $Author$
  * Created by Malte Diers, NLE, 2019-07-11
  */

#include "identifierstruct.h"
#include "settings.h"
#include <EntityIdentifierStruct.h>

namespace HighLevelArchitecture
{

quint16 IdentifierStruct::s_nextId = 1;
quint16 IdentifierStruct::s_ownSiteId = 1;

IdentifierStruct::IdentifierStruct(const rpr2::EntityIdentifierStruct &eis)
  : m_siteId(eis.FederateIdentifier.SiteID)
{
  setSiteId(eis.FederateIdentifier.SiteID);
  setApplicationId(eis.FederateIdentifier.ApplicationID);
  setEntityNumber(eis.EntityNumber);
}

rpr2::EntityIdentifierStruct IdentifierStruct::toEIS() const
{
  rpr2::EntityIdentifierStruct eis;
  eis.FederateIdentifier.SiteID        = siteId();
  eis.FederateIdentifier.ApplicationID = applicationId();
  eis.EntityNumber                     = entityNumber();
  return eis;
}

void IdentifierStruct::makeOwn()
{
  setSiteId(ownSiteId());
  setApplicationId(ownApplicationId());
}

QString IdentifierStruct::toString() const
{
  return QStringLiteral("[Site %1 | Application: %2 | Entity %3]")
      .arg(siteId())
      .arg(applicationId())
      .arg(entityNumber());
}

qint64 IdentifierStruct::toInt64() const
{
  quint64 res = 0;
  res += siteId();
  res <<= 16;
  res += applicationId();
  res <<= 16;
  res += entityNumber();
  return static_cast<qint64>(res);
}

IdentifierStruct IdentifierStruct::fromInt64(qint64 value)
{
  const quint64 uvalue = static_cast<quint64>(value);
  IdentifierStruct is;
  if ((uvalue >> 32) == 0)
    is.setSiteId(ownSiteId());
  else
    is.setSiteId((uvalue >> 32) & 0xffffU);

  if (((uvalue >> 16) & 0xffffU) == 0)
    is.setApplicationId(ownApplicationId());
  else
    is.setApplicationId((uvalue >> 16 & 0xffffU));

  is.setEntityNumber(uvalue & 0xffffU);
  return is;
}

quint16 IdentifierStruct::ownSiteId()
{
  return s_ownSiteId;
}

quint16 IdentifierStruct::ownApplicationId()
{
  static const int s_applicationId = Settings::applicationId();
  return s_applicationId;
}
} // namespace