/**
  * @RDE_HEADER@
  * Handler for all request journal objects
  * $Id$
  * $HeadURL$
  * $Author$
  * Created by Hanna E. Rathje, SLSE, 2015-01-13
  */

#include "get_participants.h"
#include "main_handler.h"

#include <ParticipantManagement/ppm_record_replay_plugin.h>
#include <ngldb/nsqlquery.h>

namespace ParticipantManagement
{

GetParticipants::GetParticipants(MainHandler *mainHandler)
  : Interface::Fts::GetParticipantsRequestHandler(mainHandler->fts())
  , m_mainHandler(mainHandler)
  , m_logger(getLogger("GetParticipants"))
{}

GetParticipants::~GetParticipants()
{
}


void GetParticipants::onGetParticipantsRequest(const rti::core::SampleIdentity &cookie,
                                               const GetParticipantsRequest &request)
{
  DEBUG_LOG(m_logger) << "onGetParticipantsRequest" << request;


  // Initialize RecordReplay to get initial participants
  RecordReplayPlugin recordReplay;
  // no ddsconnector - we don't want to publish data here
  recordReplay.initDtc(nullptr, m_mainHandler->exerciseId());

  NSqlQuery q(m_mainHandler->db()->database());
  recordReplay.readParticipantAt(q, request.timeStamp());

  // key is sampleTime -> multiMap
  auto participantsMmap = recordReplay.getParticipantMap();
  QMap<int, Participant> participants;

  // only take the newest entries (participantsMmap may contain more than one entry per participantId
  for (auto it = participantsMmap.begin(); it != participantsMmap.end(); ++it)
  {
    Participant &p = it.value();
    if (p.isDeleted())
      participants.remove(p.id());
    else
      participants[p.id()] = std::move(p);
  }

  DEBUG_LOG(m_logger) << "Starting to read participant from record replay. Size: "
                      << participants.size();

  GetParticipantsReply reply;
  reply.requestId(request.requestId());

  auto &vecPart = reply.participants();
  vecPart.reserve(participants.size());
  for (auto it = participants.begin(); it != participants.end(); ++it)
  {
    if (request.partyId() >= 0 && it.value().partyId() != request.partyId())
      continue;
    vecPart.push_back(it.value());
  }

  m_mainHandler->fts()->getParticipantsReply(cookie, reply);
}

} // Namespace ParticipantManagement