#include "FWCore/ParameterSet/interface/ConfigurationDescriptions.h"
#include "FWCore/ParameterSet/interface/ParameterSetDescription.h"
#include "FWCore/Framework/interface/ModuleFactory.h"
#include "FWCore/Framework/interface/ESProducer.h"
#include "FWCore/Framework/interface/ESTransientHandle.h"
#include "CondFormats/GeometryObjects/interface/HcalParameters.h"
#include "DetectorDescription/Core/interface/DDCompactView.h"
#include "DetectorDescription/DDCMS/interface/DDCompactView.h"
#include "Geometry/Records/interface/IdealGeometryRecord.h"
#include "Geometry/Records/interface/HcalParametersRcd.h"
#include "Geometry/HcalCommonData/interface/HcalParametersFromDD.h"

#include <memory>

//#define EDM_ML_DEBUG

class HcalParametersESModule : public edm::ESProducer {
public:
  HcalParametersESModule(const edm::ParameterSet&);

  using ReturnType = std::unique_ptr<HcalParameters>;

  static void fillDescriptions(edm::ConfigurationDescriptions&);

  ReturnType produce(const HcalParametersRcd&);

private:
  edm::ESGetToken<DDCompactView, IdealGeometryRecord> cpvTokenDDD_;
  edm::ESGetToken<cms::DDCompactView, IdealGeometryRecord> cpvTokenDD4hep_;
  bool fromDD4hep_;
};

HcalParametersESModule::HcalParametersESModule(const edm::ParameterSet& ps) {
  fromDD4hep_ = ps.getParameter<bool>("fromDD4hep");
  auto cc = setWhatProduced(this);
  if (fromDD4hep_)
    cpvTokenDD4hep_ = cc.consumesFrom<cms::DDCompactView, IdealGeometryRecord>(edm::ESInputTag());
  else
    cpvTokenDDD_ = cc.consumesFrom<DDCompactView, IdealGeometryRecord>(edm::ESInputTag());

#ifdef EDM_ML_DEBUG
  edm::LogVerbatim("HCalGeom") << "HcalParametersESModule::HcalParametersESModule called with dd4hep: " << fromDD4hep_;
#endif
}

void HcalParametersESModule::fillDescriptions(edm::ConfigurationDescriptions& descriptions) {
  edm::ParameterSetDescription desc;
  desc.add<bool>("fromDD4hep", false);
  descriptions.add("hcalParameters", desc);
}

HcalParametersESModule::ReturnType HcalParametersESModule::produce(const HcalParametersRcd& iRecord) {
  edm::LogInfo("HCalGeom") << "HcalParametersESModule::produce(const HcalParametersRcd& iRecord)";

  auto ptp = std::make_unique<HcalParameters>();
  HcalParametersFromDD builder;

  if (fromDD4hep_) {
#ifdef EDM_ML_DEBUG
    edm::LogVerbatim("HCalGeom") << "HcalParametersESModule::Try to access cms::DDCompactView";
#endif
    edm::ESTransientHandle<cms::DDCompactView> cpv = iRecord.getTransientHandle(cpvTokenDD4hep_);
    builder.build(*cpv, *ptp);
  } else {
#ifdef EDM_ML_DEBUG
    edm::LogVerbatim("HCalGeom") << "HcalParametersESModule::Try to access DDCompactView";
#endif
    edm::ESTransientHandle<DDCompactView> cpv = iRecord.getTransientHandle(cpvTokenDDD_);
    builder.build(&(*cpv), *ptp);
  }

  return ptp;
}

DEFINE_FWK_EVENTSETUP_MODULE(HcalParametersESModule);
