/* 

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Produced at the Lawrence Livermore National Laboratory 
UCRL-CODE-227323. 
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Please also read this http://nuclear.llnl.gov/simulations/additional_bsd.html
 
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*/


#include "/Users/sdevip/work/cry/src/CRYGenerator.h"
#include "/Users/sdevip/work/cry/src/CRYSetup.h"

#include "TROOT.h"
#include "TH1F.h"
#include "TH2F.h"
#include "TFile.h"

#include <iostream>
#include <string>
#include <vector>
#include <fstream>
#include <map>
#include <math.h>
#include <stdlib.h>  // For Ubuntu Linux

int main( int argc, const char *argv[]) {
  //int testRoot( int argc, const char *argv[]) {
  if (!TROOT::Initialized()) {
    static TROOT root("RooTuple", "RooTuple ROOT God in CosmicRaY simulation");
  }


  if ( argc < 2 ) {
    std::cout << "usage " << argv[0] << " <setup file name> <N events>\n";
    std::cout << "N events = 10k by default\n";
    return 0;
  }

  TFile *outputFile=new TFile("test.root","RECREATE");
  
  TH1I* multiplicity = new TH1I("mult",       "mult",      100,     0,  100);
  TH1F* latLoc       = new TH1F("latLoc",     "latLoc",    100, -150.0, 150.0);
  TH1F* keMuon       = new TH1F("keMuon",     "keMuon",     5*16, -9.0, 7.0);
  TH1F* keNeutron    = new TH1F("keNeutron",  "keNeutron",  5*16, -9.0, 7.0);
  TH1F* kePion       = new TH1F("kePion",     "kePion",     5*16, -9.0, 7.0);
  TH1F* keKaon       = new TH1F("keKaon",     "keKaon",     5*16, -9.0, 7.0);
  TH1F* keGamma      = new TH1F("keGamma",    "keGamma",    5*16, -9.0, 7.0);
  TH1F* keElectron   = new TH1F("keElectron", "keElectron", 5*16, -9.0, 7.0);
  TH1F* keProton     = new TH1F("keProton",   "keProton",   5*16, -9.0, 7.0);
  TH1F* kePrimary    = new TH1F("kePrimary",  "kePrimary",  5*16, -9.0, 8.0);
  TH1F* chargeHist   = new TH1F("chargeHist", "chargeHist",   10, -0.5, 9.5);
  TH1F* multHist     = new TH1F("multHist",   "multHist",     10, -0.5, 9.5);

  float box_size = 50.;
  int xybins = 50;
  TH1F* xall         = new TH1F("xall",   "xall",   xybins, -box_size, box_size);
  TH1F* yall         = new TH1F("yall",   "yall",   xybins, -box_size, box_size);
  TH1F* xmuon        = new TH1F("xmuon",  "xmuon",  xybins, -box_size, box_size);
  TH1F* ymuon        = new TH1F("ymuon",  "ymuon",  xybins, -box_size, box_size);
  TH2F* xyall        = new TH2F("xyall",  "xyall",  xybins, -box_size, box_size, xybins, -box_size, box_size);
  TH2F* xymuons      = new TH2F("xymuon", "xymuon", xybins, -box_size, box_size, xybins, -box_size, box_size);

  TH1F* costhe       = new TH1F("costhe",  "costhe plot;cos(theta)",   200, -1., 0. );

  std::map<CRYParticle::CRYId,TH1F*> keHistos;

  keHistos[CRYParticle::Neutron]=keNeutron;
  keHistos[CRYParticle::Muon]=keMuon;
  keHistos[CRYParticle::Proton]=keProton;
  keHistos[CRYParticle::Electron]=keElectron;
  keHistos[CRYParticle::Gamma]=keGamma;
  keHistos[CRYParticle::Kaon]=keKaon;
  keHistos[CRYParticle::Pion]=kePion;

  int nEv = 100000;
  if (argc > 2 ) nEv = atoi(argv[2]);

  // Read the setup file into setupString
  std::ifstream inputFile;
  inputFile.open(argv[1],std::ios::in);
  char buffer[1000];

  std::string setupString("");
  while (!inputFile.getline(buffer,1000).eof()) {
    setupString.append(buffer);
    setupString.append(" ");
  }

  // Parse the contents of the setup file
  CRYSetup *setup=new CRYSetup(setupString,"/Users/sdevip/work/cry/test/data");

  // Setup the CRY event generator
  CRYGenerator gen(setup);

  // Generate the events
  int nMuon = 0;
  std::vector<CRYParticle*> *ev=new std::vector<CRYParticle*>;
  for (int i = 0; i < nEv; i++) {
    ev->clear();
    gen.genEvent(ev);

    if (i % 1000 == 0) std::cout << "Event: " << i << std::endl;

    // Fill the histograms
    multiplicity->Fill(ev->size());
    kePrimary->Fill(log10(gen.primaryParticle()->ke()));
    for (unsigned j = 0; j < ev->size(); j++) {
      CRYParticle *part=(*ev)[j];
      
      //....printout all secondaries every 1000 events just for fun
      if (i % 1000 == 0) {
        std::cout << "Secondary " << j << " " <<
        CRYUtils::partName(part->id()) << " ke=" << part->ke() << "\n";
      }
      
      keHistos[part->id()]->Fill(log10(part->ke()));
      latLoc->Fill(sqrt(part->x()*part->x()+part->y()*part->y())); 
      chargeHist->Fill(part->id(),part->charge());
      multHist->Fill(part->id());
      xall->Fill(part->x());
      yall->Fill(part->y());
      xyall->Fill(part->x(), part->y());
      costhe->Fill(part->w());
      
      if (part->id() == CRYParticle::Muon) {
        xmuon->Fill(part->x());
        ymuon->Fill(part->y());      
        xymuons->Fill(part->x(), part->y());
        nMuon++;
      }
      
      delete (*ev)[j];
    }
  }

  chargeHist->Divide(multHist);
  std::cout << "Run completed.\n";
  std::cout << "Total time simulated: " << gen.timeSimulated() << " seconds\n";
  double muonsPerSecondPerm2=nMuon/(300.0*300.0*gen.timeSimulated());
  std::cout << "Muons per second per m2 " << muonsPerSecondPerm2 << std::endl;

  // Write the histogram file
  outputFile->Write();
  outputFile->Close();

  delete setup;

  return 0;
}