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// own include
//#include "include/raySimulator.h"
#include "include/RTUtil.h"
#include "include/guide.h"

// general include
#include "TROOT.h"
#include "TSystem.h"
#include "TStyle.h"
#include "TCanvas.h"
#include "TMath.h"
#include "TView3D.h"
#include "TH1F.h"
#include "TH2F.h"
#include "TBenchmark.h"
#include "TPolyMarker.h"
#include "TGraph.h"
#include "TF1.h"

//=================================================================================
TCanvas *c3dview;
TCanvas *cacc;
int show_3d = 0, show_data = 0;
int draw_width = 2;

// calls default constructor CVodnik.cpp

//void SetCenter(double x = -2.0, double y = 0.0, double z = 0.0)
//{center.SetXYZ(x,y,z); detector = new CDetector(center);}


//void SetLGType(int in = 1, int side = 1, int out = 0)
//{detector->SetLGType(in, side, out);}

//void SetLG(double SiPM0 = 3.0, double M0 = 1.666, double d0 = 3.0, double n10 = 1.0, double n20 = 1.48, double n30 = 1.48, double R0 = 0.96)
//{detector->SetLG(SiPM0, M0, d0, n10, n20, n30, R0);}

//void SetR(double R0) {detector->SetR(R0);}
/*
void SetGlass(int glass_on0 = 0, double glass_d0 = 0.3)
        {detector->SetGlass(glass_on0, glass_d0);}

void SetGap(double x_gap0 = 0.3, double y_gap0 = 0.0, double z_gap0 = 0.0)
        {detector->SetGap(x_gap0 , y_gap0, z_gap0);}

void SetRCol(int in = 2, int lg = 8, int out = 4, int gla = 6)
        {detector->SetRCol(in, lg, out, gla);};
void SetDCol(int LG0 = 1, int glass0 = 2, int active0 = 3)
        {detector->SetDCol(LG0, glass0, active0);};


void SetDWidth(int w = 1) {draw_width = w;}

void SetFresnel(int b = 1) {detector->SetFresnel(b);}
void SetAbsorb(int b = 0, double A0 = 1e4) {detector->SetAbsorption(b, A0);}

void SetGuideOn(int b = 0) {detector->SetGuideOn(b);}

void SetTypeU() {SetGlass(1, 0.3);SetGap(0.7);}
void SetTypeC() {SetGlass(0, 0.3);SetGap(1.03);}
 */

//-----------------------------------------------------------------------------
void Init(double rsys_scale = 10.0)
{      
  RTSetStyle(gStyle);
  gStyle->SetOptStat(10);

  if(show_3d) {
      double rsys0[]={-rsys_scale,-rsys_scale,-rsys_scale};
      double rsys1[]={ rsys_scale, rsys_scale, rsys_scale};

      c3dview = (TCanvas*)gROOT->FindObject("c3dview");
      if(!c3dview) {c3dview = new TCanvas("c3dview", "3D View", 0, 0, 700, 723);
      c3dview->SetFillColor(0);}
      else c3dview->Clear();

      TView3D *view = new TView3D(1, rsys0, rsys1);
      view->SetRange(rsys0[0], rsys0[1], rsys0[2], rsys1[0], rsys1[1], rsys1[2]);
      //view->SetPerspective();
      view->SetParallel();
      view->FrontView();
      view->Zoom();view->Zoom();view->Zoom();//view->Zoom();
      //view->ToggleRulers();
  }
}
//-----------------------------------------------------------------------------
void DrawData(CDetector *detector, DetectorParameters& parameters, double theta = 0.0, double acc = 0.0, int only2d = 0)
{
  if(show_data) {
      char sbuff[256];
      sprintf(sbuff, "SiPM = %.1lf, L.y. = %.2lf, d = %.1lf | gap = (%.1lf, %.1lf, %.1lf), #theta = %.1lf | acceptance = %.3lf",
          parameters.getA(), parameters.getLightYield()*acc, parameters.getD(),
          parameters.getGap().x(), parameters.getGap().y(), parameters.getGap().z(), theta, acc);

      if(!only2d) {
          RTCanvas *cdata = new RTCanvas((char*)"Data", sbuff, 350, 0, 950, 950);
          cdata->Divide(3,3);
          int cpc = 1;
          cdata->cd(cpc++); (detector->histoPlate)->Draw("COLZ");
          cdata->cd(cpc++); ((detector->GetLG())->GetHIn())->Draw("COLZ");
          cdata->cd(cpc++); //((detector->GetLG())->GetHOut())->Draw("COLZ");
          (detector->GetHGlass())->Draw("COLZ");

          cdata->cd(cpc++); (detector->GetHActive())->Draw("COLZ");
          cdata->cd(cpc++); (detector->GetHLaser())->Draw("COLZ");
          cdata->cd(cpc++); (detector->GetHDetector())->Draw("COLZ");

          cdata->cd(cpc++); ((detector->GetLG())->GetHFate())->Draw();
          cdata->cd(cpc++); ((detector->GetLG())->GetHNOdb_all())->Draw();
          cdata->cd(cpc++); ((detector->GetLG())->GetHNOdb_exit())->Draw();
      }else{
          RTCanvas *cdata = new RTCanvas((char*)"Data", sbuff, 350, 0, 500, 500);
          cdata->cd(0); (detector->GetHLaser())->Draw("COLZ");
          cdata->SaveAs("cdata.gif");
      }
  }
}
//-----------------------------------------------------------------------------
void DrawAcc(int n, double *x, double *y, char *htitle = (char*)";;Acceptance",
    double xmin = 1.0, double xmax = 0.0, double ymin = 0.0, double ymax = 1.0)
{

  cacc = new TCanvas((char*)"Acceptance", (char*)"Acceptance", 0, 0, 700, 480);

  (cacc->cd(0))->SetRightMargin(0.05);
  (cacc->cd(0))->SetLeftMargin(0.13);
  (cacc->cd(0))->SetTopMargin(0.08);

  TGraph *gacceptance = new TGraph(n, x, y);
  gacceptance->SetTitle(htitle);
  gacceptance->SetMarkerStyle(8);
  gacceptance->SetLineColor(12);
  gacceptance->SetLineWidth(1);
  if(xmin < xmax)
    (gacceptance->GetXaxis())->SetRangeUser(xmin, xmax);
  (gacceptance->GetYaxis())->SetRangeUser(ymin, ymax);

  gacceptance->Draw("ACP");
  //cacc->Print("acceptance.pdf");
  //delete gacceptance;
  //delete cacc;
}
//-----------------------------------------------------------------------------
void PrintGlassStat(CDetector *detector)
{
  int glass_in = ((detector->GetLG())->GetHOut())->GetEntries();
  int glass_out = (detector->GetHGlass())->GetEntries();
  printf("glass_in = %d, glass_out = %d, frac = %.3lf\n", glass_in, glass_out, glass_out/(double)glass_in);
}
//-----------------------------------------------------------------------------
void PrintGuideHead()
{
  //printf("   gap (x,y,z) | theta   phi | Back | Loss | Total| Miss | Exit | Acceptance\n");
  printf("Acceptance\n");
}
//-----------------------------------------------------------------------------
void PrintGuideStat(double acceptance)
{
  /*int n_active = (detector->GetHActive())->GetEntries();
        int n_enter = (detector->GetLG())->GetEnteranceHits();
        double izkoristek = n_active/(double)n_enter;
        int fates[7]; (detector->GetLG())->GetVFate(fates);

//      printf("   gap (x,y,z) | theta   phi | Back | Loss | Total| Miss | Exit | Acceptance\n");

        printf("%4.1lf,%4.1lf,%4.1lf | %4.1lf,%6.1lf |",
                   (detector->GetVGap()).x(), (detector->GetVGap()).y(), (detector->GetVGap()).z(), theta, phi);
        for(int i=0;i<5;i++) printf("%5.1lf |", 100.0*fates[i]/(double)n_enter);       

        printf("%5.1lf\n", 100.0*izkoristek);*/


  //double n_active = (detector->GetHActive())->GetEntries();
  //double r_acc = 100.0 * n_active / n_in;
  double r_acc = 100.0 * acceptance;
  printf("%7.3lf\n", r_acc);
}
//-----------------------------------------------------------------------------

//-----------------------------------------------------------------------------
// en zarek
double Single(CDetector *detector, DetectorParameters& parameters,
TVector3 hit = TVector3(0.0, 0.0, 0.0), double theta = 0.0, double phi = 0.0)
{
  theta = Pi()*theta/180.0;
  if(theta < 1e-6) theta = 1e-6;
  phi = phi*Pi()/180.0;
  if(phi < 1e-6) phi = 1e-6;

  double offset = (parameters._plateOn ? parameters._plateWidth : 0);

  //detector->Init();
  if(show_3d) detector->Draw(draw_width);

  CRay *ray0 = new CRay(hit.x() - offset, hit.y(), hit.z(),
      TMath::Cos(theta), TMath::Sin(theta)*TMath::Sin(phi),
      TMath::Sin(theta)*TMath::Cos(phi));
  // Set z-polarization == vertical
  TVector3 polarization(0,0,1);
  polarization.RotateY(-theta);
  polarization.RotateZ(phi);
  if (polarization.Dot(ray0->GetK()) > 1e-5) printf("ERROR: pol not perep\n");
  ray0->setPolarization(polarization);
  CRay *ray1 = new CRay;

  detector->Propagate(*ray0, ray1, show_3d);

  CRay *incidentPolarization = new CRay;
  incidentPolarization->SetColor(kGreen);
  TVector3 drawPosition = ray0->GetR();
  drawPosition.SetX(drawPosition.X() - 5);
  incidentPolarization->Set(drawPosition, polarization);
  incidentPolarization->DrawS(drawPosition.X(), 1);

  TVector3 outPolarization = ray1->GetP();
  drawPosition = ray1->GetR();
  drawPosition.SetX(drawPosition.X() + 5);
  CRay* rayPol = new CRay(drawPosition, outPolarization);
  rayPol->SetColor(kBlack);
  rayPol->DrawS(drawPosition.X(), 1);

  delete ray0;
  delete ray1;

  return (detector->GetHActive())->GetEntries() / (double)(1);
}
//-----------------------------------------------------------------------------
// zarki, razporejeni v mrezi
double Grid(CDetector *detector, DetectorParameters& parameters,
int NN = 10, double theta = 0.0)
{
  //CDetector *detector = new CDetector(center, 3, 1.666, 3, 3, 1, 1.48, 1.48);
  theta = Pi()*theta/180.0;
  if(theta < 1e-6) theta = 1e-6;

  //detector->Init();
  if(show_3d) detector->Draw(draw_width);

  const double b = parameters.getB();

  double offset = (parameters._plateOn ? parameters._plateWidth : 0);

  for(int i = 0; i < NN; i++) {
      for(int j = 0; j < NN; j++) {
          CRay *ray0 = new CRay(CENTER.x() - offset,
              0.99*(i*b/NN + b/(2.0*NN) - b/2.0),
              0.99*(j*b/NN + b/(2.0*NN) - b/2.0),
              TMath::Cos(theta),
              0.0,
              TMath::Sin(theta));
          TVector3 polarization(0, 1, 0);
          polarization.RotateY(-theta);
          ray0->setPolarization(polarization);
          CRay *ray1 = new CRay;
          if(i == (NN/2))
            detector->Propagate(*ray0, ray1, show_3d);
          else
            detector->Propagate(*ray0, ray1, 0);
          delete ray0;
          delete ray1;
      }

  }
  double acceptance = 0.0;
  /*
        if( !(parameters.getPlateOn()) )
          acceptance = (detector->GetHActive())->GetEntries() / (double)NN*NN;
  else
    acceptance = (detector->GetHActive())->GetEntries() / (detector->GetHPlate())->GetEntries();       
   */

  acceptance = (detector->GetHActive())->GetEntries() / (double)((NN)*(NN));
  return acceptance;
}
//-----------------------------------------------------------------------------
// zarki z nakljucnim polozajem vpada (na vstopni pov. vodnika)
// vsi pod kotom (theta, phi)
double RandYZ(CDetector *detector, DetectorParameters& parameters,
int NN, double theta, double phi, int show_rays)
{
  //CDetector *detector = new CDetector(center, 3, 1.666, 3, 3, 1, 1.48, 1.48);
  theta = theta*3.14159265358979312/180.0;
  if(theta < MARGIN) theta = MARGIN;
  phi = phi*3.14159265358979312/180.0;
  if(phi < MARGIN) phi = MARGIN;

  TDatime now;
  TRandom rand;
  rand.SetSeed(now.Get());

  //detector->Init();
  if(show_3d) detector->Draw(draw_width);

  double SiPM = parameters.getA();
  double    M = parameters.getM();
  double offset = (parameters._plateOn ? parameters._plateWidth : 0);

  for(int i = 0; i < NN; i++) {

      double rx = CENTER.x() - offset;
      double ry = rand.Uniform(-M*SiPM/2.0, M*SiPM/2.0);
      double rz = rand.Uniform(-M*SiPM/2.0, M*SiPM/2.0);

      double rl = TMath::Cos(theta);
      double rm = TMath::Sin(theta)*TMath::Sin(phi);
      double rn = TMath::Sin(theta)*TMath::Cos(phi);

      CRay *ray0 = new CRay(rx, ry, rz, rl, rm, rn);
      TVector3 polarization(0, 0, 1);
      polarization.RotateY(-theta);
      polarization.RotateZ(phi);
      ray0->setPolarization(polarization);
      CRay *ray1 = new CRay;

      if(i < show_rays)
        detector->Propagate(*ray0, ray1, show_3d);
      else
        detector->Propagate(*ray0, ray1, 0);
      delete ray1;
      delete ray0;
  }

  double acceptance = 0.0;
  /*
        if( !(parameters.getPlateOn()) )
          acceptance = (detector->GetHActive())->GetEntries() / (double)NN;
  else
    acceptance = (detector->GetHActive())->GetEntries() / (detector->GetHPlate())->GetEntries();       
        //return (detector->GetHActive())->GetEntries() / (double)((NN)*(NN));*/

  acceptance = (detector->GetHActive())->GetEntries() / (double) NN;
  return acceptance;
}
//-----------------------------------------------------------------------------
// zarki, izotropno porazdeljeni znotraj kota theta
// = nakljucni vstopni polozaj in kot
// NN - number of rays to be simulated with angles theta distributed uniformly
//      in cos theta and phi uniformly:
//      theta [0, theta]
//      phi [0,360]
double RandIso(CDetector *detector, DetectorParameters& parameters,
int NN = 1e3, double thetaMin=0.0, double theta = 30.0, int show_rays = 30, int show_rand = 0)
{
  //CDetector *detector = new CDetector(center, 3, 1.666, 3, 3, 1, 1.48, 1.48);
  double pi = 3.14159265358979312;
  theta = theta*3.14159265358979312/180.0;
  if(theta < MARGIN) theta = MARGIN;

  TDatime now;
  TRandom rand;
  rand.SetSeed(now.Get());
  double rx, ry, rz, rl, rm, rn;
  double rphi, rtheta;
  //double theta_min_rad = TMath::Power(TMath::Cos(theta), 2);
  double theta_min_rad = TMath::Cos(theta);
  double theta_max_rad = TMath::Cos(thetaMin);

  TH1F *hphi, *htheta, *hcostheta, *hl, *hm, *hn;
  hphi = (TH1F*)gROOT->FindObject("hphi"); if(hphi) delete hphi;
  hphi = new TH1F("hphi", "hphi", 100, 0.0, 2.0*pi);
  htheta = (TH1F*)gROOT->FindObject("htheta"); if(htheta) delete htheta;
  htheta = new TH1F("htheta", "htheta", 100, 0.0, pi/2.0);
  hcostheta = (TH1F*)gROOT->FindObject("hcostheta"); if(hcostheta) delete hcostheta;
  hcostheta = new TH1F("hcostheta", "hcostheta", 100, 0.0, 1.0);
  hl = (TH1F*)gROOT->FindObject("hl"); if(hl) delete hl;
  hl = new TH1F("hl", "hl", 100, 0.0, 1.0);
  hm = (TH1F*)gROOT->FindObject("hm"); if(hm) delete hm;
  hm = new TH1F("hm", "hm", 100, 0.0, 1.0);
  hn = (TH1F*)gROOT->FindObject("hn"); if(hn) delete hn;
  hn = new TH1F("hn", "hn", 100, 0.0, 1.0);


  //detector->Init();
  if (show_3d) detector->Draw(draw_width);

  double SiPM = parameters.getA();
  double M = parameters.getM();
  double offset = (parameters._plateOn ? parameters._plateWidth : 0);

  for(int i = 0; i < NN; i++) {

      rx = CENTER.x() - offset;
      ry = rand.Uniform(-M*SiPM/2.0, M*SiPM/2.0);
      rz = rand.Uniform(-M*SiPM/2.0, M*SiPM/2.0);

      rphi = rand.Uniform(0.0, 2.0*pi);
      //double theta_max_rad = TMath::Cos(17.0*pi/180.0);
      //rtheta = TMath::ACos((rand.Uniform(theta_min_rad, 1.0)));
      rtheta = TMath::ACos((rand.Uniform(theta_min_rad, theta_max_rad)));

      rl = TMath::Cos(rtheta);
      rm = TMath::Sin(rtheta)*TMath::Sin(rphi);
      rn = TMath::Sin(rtheta)*TMath::Cos(rphi);

      if(show_rand) {
          htheta->Fill(rtheta);
          hcostheta->Fill( TMath::Cos(rtheta) );
          hphi->Fill(rphi);
          hl->Fill(rl); hm->Fill(rm); hn->Fill(rn);
      }

      CRay *ray0 = new CRay(rx, ry, rz, rl, rm, rn);
      CRay *ray1 = new CRay;

      if(i < show_rays) {
          detector->Propagate(*ray0, ray1, show_3d);
      }
      else {
          detector->Propagate(*ray0, ray1, 0);
      }

      delete ray0;
      delete ray1;
  }

  if(show_rand) {
      TCanvas *c2rand = (TCanvas*)gROOT->FindObject("c2rand");
      if(!c2rand) c2rand = new TCanvas("c2rand", "Random", 750, 550, 700, 700);
      else c2rand->Clear();
      c2rand->Divide(2,3);

      c2rand->cd(1); hphi->Draw();
      c2rand->cd(3); htheta->Draw();
      c2rand->cd(5); hcostheta->Draw();
      c2rand->cd(2); hl->Draw();
      c2rand->cd(4); hm->Draw();
      c2rand->cd(6); hn->Draw();
  }

  double acceptance = 0.0;
  /*
        if( !(parameters.getPlateOn()) )
          acceptance = (detector->GetHActive())->GetEntries() / (double)NN;
  else
    acceptance = (detector->GetHActive())->GetEntries() / (detector->GetHPlate())->GetEntries();
   */

  acceptance = (detector->GetHActive())->GetEntries() / (double)NN;
  return acceptance;
}

// Beamtest distribution
// with fixed theta and phi in interval phiMin, phiMax
double beamtest(CDetector *detector, DetectorParameters& parameters,
int NN, double theta, double phiMin, double phiMax, int show_rays, int show_rand)
{
  double pi = 3.14159265358979312;
  theta *= pi/180.0;
  if(theta < MARGIN) theta = MARGIN;
  phiMin *= pi/180.0;
  phiMax *= pi/180.0;

  TDatime now;
  TRandom rand;
  rand.SetSeed(now.Get());
  double rx, ry, rz, rl, rm, rn;
  double rphi;

  TH1F *hphi, *htheta, *hcostheta, *hl, *hm, *hn;
  hphi = (TH1F*)gROOT->FindObject("hphi"); if(hphi) delete hphi;
  hphi = new TH1F("hphi", "hphi", 100, -pi, pi);
  htheta = (TH1F*)gROOT->FindObject("htheta"); if(htheta) delete htheta;
  htheta = new TH1F("htheta", "htheta", 100, 0.0, pi/2.0);
  hcostheta = (TH1F*)gROOT->FindObject("hcostheta"); if(hcostheta) delete hcostheta;
  hcostheta = new TH1F("hcostheta", "hcostheta", 100, 0.0, 1.0);
  hl = (TH1F*)gROOT->FindObject("hl"); if(hl) delete hl;
  hl = new TH1F("hl", "hl", 100, 0.0, 1.0);
  hm = (TH1F*)gROOT->FindObject("hm"); if(hm) delete hm;
  hm = new TH1F("hm", "hm", 100, 0.0, 1.0);
  hn = (TH1F*)gROOT->FindObject("hn"); if(hn) delete hn;
  hn = new TH1F("hn", "hn", 100, 0.0, 1.0);

  //detector->Init();
  if (show_3d) detector->Draw(draw_width);

  double b = parameters.getB();
  double offset = (parameters._plateOn ? parameters._plateWidth : 0);

  for(int i = 0; i < NN; i++) {

      rx = CENTER.x() - offset;
      ry = rand.Uniform(-b/2.0, b/2.0);
      rz = rand.Uniform(-b/2.0, b/2.0);

      rphi = rand.Uniform(phiMin, phiMax);
      //double theta_max_rad = TMath::Cos(17.0*pi/180.0);
      //rtheta = TMath::ACos((rand.Uniform(theta_min_rad, 1.0)));
      //rtheta = TMath::ACos((rand.Uniform(theta_min_rad, theta_max_rad)));

      rl = TMath::Cos(theta);
      rm = TMath::Sin(theta)*TMath::Sin(rphi);
      rn = TMath::Sin(theta)*TMath::Cos(rphi);

      if(show_rand) {
          //htheta->Fill(rtheta);
          //hcostheta->Fill( TMath::Cos(rtheta) );
          hphi->Fill(rphi);
          hl->Fill(rl);
          hm->Fill(rm);
          hn->Fill(rn);
      }

      CRay *ray0 = new CRay(rx, ry, rz, rl, rm, rn);
      // inital polarizaton
      TVector3 polarization(0, 0, 1);
      polarization.RotateY(-theta);
      polarization.RotateX(rphi);
      ray0->setPolarization(polarization);
      CRay *ray1 = new CRay;

      if(i < show_rays) {
          detector->Propagate(*ray0, ray1, show_3d);
      }
      else {
          detector->Propagate(*ray0, ray1, 0);
      }

      delete ray0;
      delete ray1;
  }

  if(show_rand) {
      TCanvas *c2rand = (TCanvas*)gROOT->FindObject("c2rand");
      if(!c2rand) c2rand = new TCanvas("c2rand", "Random", 750, 550, 700, 700);
      else c2rand->Clear();
      c2rand->Divide(2,3);

      c2rand->cd(1); hphi->Draw();
      c2rand->cd(3); htheta->Draw();
      c2rand->cd(5); hcostheta->Draw();
      c2rand->cd(2); hl->Draw();
      c2rand->cd(4); hm->Draw();
      c2rand->cd(6); hn->Draw();
  }

  double acceptance = 0.0;
  /*
        if( !(parameters.getPlateOn()) )
          acceptance = (detector->GetHActive())->GetEntries() / (double)NN;
  else
    acceptance = (detector->GetHActive())->GetEntries() / (detector->GetHPlate())->GetEntries();
   */

  acceptance = (detector->GetHActive())->GetEntries() / (double)NN;
  return acceptance;
}