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#include "Tst1UserScoreWriter.hh"

#include "G4MultiFunctionalDetector.hh"
#include "G4SDParticleFilter.hh"
#include "G4VPrimitiveScorer.hh"
#include "G4VScoringMesh.hh"

#include <map>
#include <fstream>

Tst1UserScoreWriter::Tst1UserScoreWriter()
  : G4VScoreWriter() {
  ;
}

Tst1UserScoreWriter::~Tst1UserScoreWriter() {
  ;
}

void Tst1UserScoreWriter::DumpQuantityToFile(G4String & psName, G4String & fileName, G4String & option) {

  //
  G4cout << "User-defined DumpQuantityToFile() method." << G4endl;
  G4cout << "  -- to obtain a projection of the quantity onto the x-y plane --" << G4endl;

  // change the option string into lowercase to the case-insensitive.
  G4String opt = option;
  std::transform(opt.begin(), opt.end(), opt.begin(), (int (*)(int))(tolower));

  // confirm the option
  if(opt.size() == 0) opt = "csv";

  // open the file
  std::ofstream ofile(fileName);
  if(!ofile) {
    G4cerr << "ERROR : DumpToFile : File open error -> "
	   << fileName << G4endl;
    return;
  }
  ofile << "# mesh name: " << fScoringMesh->GetWorldName() << G4endl;

  
  // retrieve the map
  MeshScoreMap fSMap = fScoringMesh->GetScoreMap();
  

  MeshScoreMap::const_iterator msMapItr = fSMap.find(psName);
  if(msMapItr == fSMap.end()) {
    G4cerr << "ERROR : DumpToFile : Unknown quantity, \""
	   << psName << "\"." << G4endl;
    return;
  }
  std::map<G4int, G4double*> * score = msMapItr->second->GetMap();
  ofile << "# primitive scorer name: " << msMapItr->first << G4endl;

  // write header info 
  ofile << "# xy projection" << G4endl;
  ofile << fNMeshSegments[0] << " " << fNMeshSegments[1] << " " << G4endl;

  // declare xy array
  std::vector<double> projy;
  for(int y = 0; y < fNMeshSegments[1]; y++) projy.push_back(0.);
  std::vector<std::vector<double> > projxy;
  for(int x = 0; x < fNMeshSegments[0]; x++) projxy.push_back(projy);
  // accumulate
  ofile << std::setprecision(16); // for double value with 8 bytes
  for(int x = 0; x < fNMeshSegments[0]; x++) {
    for(int y = 0; y < fNMeshSegments[1]; y++) {
      for(int z = 0; z < fNMeshSegments[2]; z++) {

	G4int idx = GetIndex(x, y, z);
	
	std::map<G4int, G4double*>::iterator value = score->find(idx);
	if(value != score->end()) projxy[x][y] += *(value->second);

      } // z
    } // y
  } // x

  // write quantity
  ofile << std::setprecision(16); // for double value with 8 bytes
  for(int x = 0; x < fNMeshSegments[0]; x++) {
    for(int y = 0; y < fNMeshSegments[1]; y++) {

      ofile << x << "," << y << ",";
      ofile << projxy[x][y] << G4endl;

    } // y
  } // x
  ofile << std::setprecision(6);

  // close the file
  ofile.close();
  
}