/**
  * @RDE_HEADER@
  * ISM Handler Presentations
  * $Id$
  * $HeadURL$
  * $Author$
  * Created by Iuliana Ojog, SLSE, 2016-11-26
  */

#include "handler_presentation.h"
#include "object_presentation.h"
#include "initialization.h"
#include "dds_handler.h"


namespace PresentationManagement
{

//---------------------------------------------------------------------------------------------------------------------------------------------------
HandlerPresentation::HandlerPresentation(Initialization *mainHandler)
  : Interface::Fts::PresentationModifyRequestHandler(mainHandler->dds()->fts())
  , Interface::Fts::PresentationRemoveRequestHandler(mainHandler->dds()->fts())
  , Interface::Fts::GetPresentationContentRequestHandler(mainHandler->dds()->fts())
  , Interface::Fts::PresentationChangeStatusRequestHandler(mainHandler->dds()->fts())
  , m_mainHandler(mainHandler)
  , m_logger(getLogger("HandlerPresentation"))
{
}

//---------------------------------------------------------------------------------------------------------------------------------------------------
HandlerPresentation::~HandlerPresentation()
{
  qDeleteAll(m_objectPresentationMap);
}

//---------------------------------------------------------------------------------------------------------------------------------------------------
bool HandlerPresentation::init()
{
  {
    // create presentation objects
    auto cb = [this](const Database::PrePresentation &data)
    {
      const PresentationManagement::Presentation ddsData = ObjectPresentation::toDdsData(data);
      ObjectPresentation *ifs(new ObjectPresentation(ddsData, m_mainHandler));
      m_objectPresentationMap.insert(ifs->getId(), ifs);
    };
    if (!m_mainHandler->db()->select(cb))
    {
      ERROR_LOG(m_logger) << "Error reading data from database!";
      return false;
    }
    DEBUG_LOG(m_logger) << "m_objectPresentationMap.size() = " << m_objectPresentationMap.size();
  }

  {
    // add presentationContent to presentation
    auto cb = [this] (const Database::PrePresentationContent &data)
    {
      ObjectPresentation *objPre = m_objectPresentationMap.value(data.presentationId);
      if (!objPre || !objPre->isValid())
      {
        WARNING_LOG(m_logger) << "Cannot find presentation Id = " << data.presentationId
                              << " for presentationContent " << data.id;
        return;
      }
      objPre->addPresentationContent(ObjectPresentation::toDdsData(data));
    };
    if (!m_mainHandler->db()->select(cb))
    {
      ERROR_LOG(m_logger) << "Error reading data from database!";
      return false;
    }
  }

  // publish
  for (ObjectPresentation *objPre : qAsConst(m_objectPresentationMap))
    objPre->onPublishData();

  return true;
}

//---------------------------------------------------------------------------------------------------------------------------------------------------
void HandlerPresentation::onPresentationModifyRequest(const rti::core::SampleIdentity &cookie,
                                                      const PresentationModifyRequest &request)
{
  DEBUG_LOG(m_logger) << "onPresentationModifyRequest: " << request;
  auto ret = request.id() > 0 ? presentationModifyRequest(request) : presentationCreateRequest(request);
  if (ret.error())
    WARNING_LOG(m_logger) << ret();
  m_mainHandler->dds()->fts()->presentationModifyReply(cookie, ret);
}

//---------------------------------------------------------------------------------------------------------------------------------------------------
Core::FunctionReplyObject HandlerPresentation::presentationCreateRequest(const PresentationModifyRequest &request)
{
  PresentationManagement::ObjectPresentation *ifs(new ObjectPresentation(m_mainHandler));
  Core::FunctionReplyObject ret = ifs->createObject(request);
  if (ret.error())
  {
    delete ifs;
    return ret;
  }

  m_objectPresentationMap.insert(ifs->getId(), ifs);

  // publish
  ifs->onPublishData();

  return ret;
}

//---------------------------------------------------------------------------------------------------------------------------------------------------
Core::FunctionReplyObject HandlerPresentation::presentationModifyRequest(const PresentationModifyRequest &request)
{
  PresentationManagement::ObjectPresentation *ifs = m_objectPresentationMap.value(request.id());
  if (ifs == nullptr)
    return Core::FunctionReplyObject(request.id(), tr_lts("dds", "Presentation with id %1 not found")).arg(request.id());

  int oldId = request.id();
  Core::FunctionReplyObject ret = ifs->updateObject(request);
  if (ret.error())
    return ret;

  m_objectPresentationMap.remove(oldId);
  m_objectPresentationMap.insert(ifs->getId(), ifs);

  return ret;
}

//---------------------------------------------------------------------------------------------------------------------------------------------------
void HandlerPresentation::onPresentationRemoveRequest(const rti::core::SampleIdentity &cookie,
                                                      const Core::RemoveElementRequest &request)
{
  DEBUG_LOG(m_logger) << "onPresentationRemoveRequest: " << request;
  Core::FunctionReplyObject ret;
  int presentationId = request.id();

  // gest presentation object
  PresentationManagement::ObjectPresentation *ifs = m_objectPresentationMap.value(presentationId);
  if (ifs == nullptr)
  {
    ret = Core::FunctionReplyObject(presentationId, tr_lts("dds", "Presentation with id %1 not found")).arg(presentationId);
    m_mainHandler->dds()->fts()->presentationRemoveReply(cookie, ret);
    return;
  }

  if (m_mainHandler->dds()->topicLockMaster()->isLocked(ifs->getData(), m_mainHandler->exerciseId()))
  {
    ret = Core::FunctionReplyObject(request.id(), tr_lts("dds", "Presentation '%1' is used by another user!")).arg(ifs->getName());
    m_mainHandler->dds()->fts()->presentationRemoveReply(cookie, ret);
    return;
  }

  DEBUG_LOG(m_logger) << "Deleting presentation id = " <<  presentationId;
  ret = ifs->removeObject();  // removes all from db due to fk
  if (ret.error())
    ERROR_LOG(m_logger) << ret();

  // delete ObjectPresentation (including Map)
  delete ifs;
  m_objectPresentationMap.remove(presentationId);

  m_mainHandler->dds()->dts()->removePresentationByKey(presentationId);

  m_mainHandler->dds()->fts()->presentationRemoveReply(cookie, ret);

  return;
}
//---------------------------------------------------------------------------------------------------------------------------------------------------
void HandlerPresentation::onGetPresentationContentRequest(const rti::core::SampleIdentity &cookie,
                                                          const GetPresentationContentRequest &request)
{
  Core::FunctionReplyObject fro;
  GetPresentationContentReply reply;

  ObjectPresentation *ifs = m_objectPresentationMap.value(request.presentationId());

  if (ifs)
  {
    reply.id(ifs->getId());
/*
    if (ifs->getContent().size() <= 0)
      fro = Core::FunctionReplyObject(request.presentationId(), tr_lts("dds", "No content for presentation "));
    else
*/
    reply.content(ifs->getContent());
  }
  else
    fro = Core::FunctionReplyObject(request.presentationId(), tr_lts("dds", "No valid presentation id for retrieving presentation content"));

  if (fro.error())
  {
    reply.id(fro.id());
    reply.errorString(fro.str());
    reply.errorParams(fro.args());
  }

  m_mainHandler->dds()->fts()->getPresentationContentReply(cookie, reply);
}

//----------------------------------------------------------------------------------------------------------------------------
void HandlerPresentation::onPresentationChangeStatusRequest(const rti::core::SampleIdentity &cookie,
                                                            const PresentationChangeStatusRequest &request)
{
  ObjectPresentation *ifs = m_objectPresentationMap.value(request.id());
  if (ifs == nullptr)
  {
    Core::FunctionReplyObject ret = Core::FunctionReplyObject(request.id(), tr_lts("dds", "Presentation with id %1 not found")).arg(request.id());
    m_mainHandler->dds()->fts()->presentationChangeStatusReply(cookie, ret);
    return;
  }
  Core::FunctionReplyObject ret = ifs->changeStatus(request);
  if (ret.error())
    ERROR_LOG(m_logger) << ret();

  m_mainHandler->dds()->fts()->presentationChangeStatusReply(cookie, ret);
}

//---------------------------------------------------------------------------------------------------------------------------------------------------
} // Namespace PresentationManagement