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/// \file Par02DetectorParametrisation.cc
/// \brief Implementation of the Par02DetectorParametrisation class

#include "Par02DetectorParametrisation.hh"

#include "G4SystemOfUnits.hh"
#include "G4UnitsTable.hh"

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Par02DetectorParametrisation::Par02DetectorParametrisation() = default;

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Par02DetectorParametrisation::~Par02DetectorParametrisation() = default;

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G4double Par02DetectorParametrisation::GetResolution(Detector aDetector, Parametrisation aParam,
                                                     G4double aMomentum)
{
  aMomentum /= GeV;  // To make sure momentum's unit is GeV
  G4double res = 1.0;
  if (aParam == eCMS) {
    switch (aDetector) {
      case Par02DetectorParametrisation::eTRACKER:
        res = 0.013;
        break;
      case Par02DetectorParametrisation::eEMCAL:
        res = std::sqrt(std::pow(0.03 / std::sqrt(aMomentum), 2)  // stochastic
                        + std::pow(0.12 / aMomentum, 2)  // noise
                        + std::pow(0.003, 2));  // constant
        break;
      case Par02DetectorParametrisation::eHCAL:
        res = std::sqrt(std::pow(1.1 / std::sqrt(aMomentum), 2)  // stochastic
                        + std::pow(0.09, 2));  // constant
        break;
    }
  }
  else if (aParam == eATLAS) {
    switch (aDetector) {
      case Par02DetectorParametrisation::eTRACKER:
        res = 0.01;
        break;
      case Par02DetectorParametrisation::eEMCAL:
        res = std::sqrt(std::pow(0.1 / std::sqrt(aMomentum), 2)  // stochastic
                        + std::pow(0.0017, 2));  // constant
        break;
      case Par02DetectorParametrisation::eHCAL:
        res = std::sqrt(std::pow(0.55 / std::sqrt(aMomentum), 2)  // stochastic
                        + std::pow(0.06, 2));  // constant
        break;
    }
  }
  else if (aParam == eALEPH) {
    switch (aDetector) {
      case Par02DetectorParametrisation::eTRACKER:
        res = 0.01;
        break;
      case Par02DetectorParametrisation::eEMCAL:
        res = std::sqrt(std::pow(0.18 / std::sqrt(aMomentum), 2)  // stochastic
                        + std::pow(0.009, 2));  // constant
        break;
      case Par02DetectorParametrisation::eHCAL:
        res = 0.85 / std::sqrt(aMomentum);  // stochastic
        break;
    }
  }
  return res;
}

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G4double Par02DetectorParametrisation::GetEfficiency(Detector aDetector, Parametrisation /*aParam*/,
                                                     G4double /*aMomentum*/)
{
  // For the time being, we set the efficiency to 1.0
  G4double eff = 1.0;
  switch (aDetector) {
    case Par02DetectorParametrisation::eTRACKER:
      eff = 1.0;
      break;
    case Par02DetectorParametrisation::eEMCAL:
      eff = 1.0;
      break;
    case Par02DetectorParametrisation::eHCAL:
      eff = 1.0;
      break;
  }
  return eff;
}

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