#include "AliPHOSDA1.h"
#include "TString.h"

ClassImp(AliPHOSDA1)

//----------------------------------------------------------------
AliPHOSDA1::AliPHOSDA1(int module) : TNamed(),
	   fHistoFile(0),fMod(module),fWriteToFile(kTRUE),fHistoArray()

{
  // Create DA1 ("Calibration DA") object.
  // module is the PHOS module number (0..4).
  // Checks existence of histograms which might have been left
  // from the previous runs to continue their filling.
  // Histogram names: module_iX_iZ_gain for TH2 and  module_iX_iZ for TH1.
  // Root file name: PHOS_ModuleX_Calib.root, where X - module number.
  
  char name[128];
  sprintf(name,"PHOS_Module%d_Calib",fMod);
  SetName(name);

  SetTitle("Calibration Detector Algorithm");

  char rootname[128];
  sprintf(rootname,"%s.root",GetName());

  fHistoFile =  new TFile(rootname,"update");
  fHistoArray.SetName("histo_container");

  char hname[128];
  TH1F* hist1=0;
  TH2F* hist2=0;

  for(Int_t iX=0; iX<64; iX++) {
    for(Int_t iZ=0; iZ<56; iZ++) {

      sprintf(hname,"%d_%d_%d",fMod,iX,iZ);
      hist1 = (TH1F*)fHistoFile->Get(hname);
      if(hist1) { 
	fHgLgRatio[iX][iZ] = hist1;
	fHistoArray.Add(hist1);
      }
      else
	fHgLgRatio[iX][iZ] = 0;

      for(Int_t iGain=0; iGain<2; iGain++) {
	sprintf(hname,"%d_%d_%d_%d",fMod,iX,iZ,iGain);
	hist2 = (TH2F*)fHistoFile->Get(hname);
	if(hist2) {
	  fTimeEnergy[iX][iZ][iGain] = hist2;
	  fHistoArray.Add(hist2);
	}
	else
	  fTimeEnergy[iX][iZ][iGain] = 0;
      }

    }
  }
 
}

//-------------------------------------------------------------------
AliPHOSDA1::AliPHOSDA1(Int_t module, TH2F oldTimeEnergy[64][56][2]) :
  TNamed(),fHistoFile(0),fMod(module),fWriteToFile(kFALSE),fHistoArray()
{
  // Constructor. 
  // oldTimeEnergy is an array of histograms kept from the previous run.
  // By default the final histograms will not be saved to the root file.

  char name[128];
  sprintf(name,"PHOS_Module%d_Calib",fMod);
  SetName(name);
  
  SetTitle("Calibration Detector Algorithm");
  fHistoArray.SetName("histo_container");

  if(oldTimeEnergy) {

    for(Int_t iX=0; iX<64; iX++) {
      for(Int_t iZ=0; iZ<56; iZ++) {

	fHgLgRatio[iX][iZ] = 0;
	for(Int_t iGain=0; iGain<2; iGain++) {

	  if((&(oldTimeEnergy[iX][iZ][iGain]))->GetEntries()) { 
	    fTimeEnergy[iX][iZ][iGain] = &(oldTimeEnergy[iX][iZ][iGain]);
	    fHistoArray.Add(&(oldTimeEnergy[iX][iZ][iGain]));
	  }
	  else
	    fTimeEnergy[iX][iZ][iGain] = 0;
	}
      }
    }
  
  }

  else {
    for(Int_t iX=0; iX<64; iX++) {
      for(Int_t iZ=0; iZ<56; iZ++) {
	fHgLgRatio[iX][iZ] = 0;
	for(Int_t iGain=0; iGain<2; iGain++) {
	  fTimeEnergy[iX][iZ][iGain] = 0;
	}
      }
    }
  }


}

//-------------------------------------------------------------------
AliPHOSDA1::AliPHOSDA1(const AliPHOSDA1& da) : TNamed(da),
 fHistoFile(0),fMod(da.fMod),fWriteToFile(da.fWriteToFile),fHistoArray(da.fHistoArray)
{
  // Copy constructor.

  fHistoFile = new TFile(da.GetName(),"update");

  char hname[128];
  TH1F* hist1=0;
  TH2F* hist2=0;

  for(Int_t iX=0; iX<64; iX++) {
    for(Int_t iZ=0; iZ<56; iZ++) {

      sprintf(hname,"%d_%d_%d",fMod,iX,iZ);
      hist1 = (TH1F*)da.fHistoFile->Get(hname);
      if(hist1) fHgLgRatio[iX][iZ] = hist1;
      else
	fHgLgRatio[iX][iZ] = 0;

      for(Int_t iGain=0; iGain<2; iGain++) {
	sprintf(hname,"%d_%d_%d_%d",fMod,iX,iZ,iGain);
	hist2 = (TH2F*)da.fHistoFile->Get(hname);
	if(hist2) fTimeEnergy[iX][iZ][iGain] = hist2;
	else
	  fTimeEnergy[iX][iZ][iGain] = 0;
      }

    }
  }
  
}

//-------------------------------------------------------------------
AliPHOSDA1& AliPHOSDA1::operator= (const AliPHOSDA1& da)
{
  //Assignment operator.

  if(this != &da) {

    TString oldname(fHistoFile->GetName());
    TString newname(da.fHistoFile->GetName());

    if(oldname != newname) {
      delete fHistoFile;
      fHistoFile = new TFile(da.fHistoFile->GetName(),"update");
    }

    fMod = da.fMod;

    SetName(da.GetName());
    SetTitle(da.GetTitle());

    for(Int_t iX=0; iX<64; iX++) {
      for(Int_t iZ=0; iZ<56; iZ++) {

	if(fHgLgRatio[iX][iZ]) delete fHgLgRatio[iX][iZ];
	fHgLgRatio[iX][iZ] = da.fHgLgRatio[iX][iZ];

	for(Int_t iGain=0; iGain<2; iGain++) {
	  if (fTimeEnergy[iX][iZ][iGain]) delete fTimeEnergy[iX][iZ][iGain];
	  fTimeEnergy[iX][iZ][iGain] = da.fTimeEnergy[iX][iZ][iGain];
	}

      }
    }

    fHistoArray = da.fHistoArray;
    
  }

  return *this;
}


//-------------------------------------------------------------------
AliPHOSDA1::~AliPHOSDA1()
{
  // Destructor
  
  UpdateHistoFile();
  if(fHistoFile) delete fHistoFile;
  
}

//-------------------------------------------------------------------
void AliPHOSDA1::FillHistograms(Float_t e[64][56][2], Float_t t[64][56][2]) 
{
  // Fill energy vs time-of-flight and HG/LG ratio histograms in one event.
  // Energy and TOF data are encoded as e[X][Z][gain] and t[X][Z][gain], 
  // where X(0..63) and Z(0..55) - crystal position in the module, 
  // gain=0 - low gain, gain=1 - high gain.
  // Energy in ADC counts, time in samples.
  // If no energy or time read for particular channel, 
  // the correspondent array entry should be filled by zero.
  // WARNING: this function should be called once per event!

  char hname[128];
  char htitl[128];

  for(Int_t iX=0; iX<64; iX++) {
    for (Int_t iZ=0; iZ<56; iZ++) {

      // HG/LG
      if(e[iX][iZ][0]>10. && e[iX][iZ][1]>10. && e[iX][iZ][1]<900.) {
	if(fHgLgRatio[iX][iZ]) {
// 	  printf("iX=%d iZ=%d,e[iX][iZ][1]=%.3f,e[iX][iZ][0]=%.3f, t1=%.3f,t0=%.3f\n",
// 		 iX,iZ,e[iX][iZ][1],e[iX][iZ][0], t[iX][iZ][1],t[iX][iZ][0]);
	  fHgLgRatio[iX][iZ]->Fill(e[iX][iZ][1]/e[iX][iZ][0]); 
	}
	else
	  {
	    sprintf(hname,"%d_%d_%d",fMod,iX,iZ);
	    sprintf(htitl,"HG/LG ratio for crystal %d_%d_%d",fMod,iX,iZ);
	    fHgLgRatio[iX][iZ] = new TH1F(hname,htitl,400,14.,18.);
// 	    printf("iX=%d iZ=%d,e[iX][iZ][1]=%.3f,e[iX][iZ][0]=%.3f\n",
// 		   iX,iZ,e[iX][iZ][1],e[iX][iZ][0]);
	    fHgLgRatio[iX][iZ]->Fill(e[iX][iZ][1]/e[iX][iZ][0]);
	    fHistoArray.Add(fHgLgRatio[iX][iZ]);
	  }
      }
	  
      // Energy vs TOF
      for(Int_t iGain=0; iGain<2; iGain++) {
	if(e[iX][iZ][iGain]<10) continue;

	if(fTimeEnergy[iX][iZ][iGain]) 
	  fTimeEnergy[iX][iZ][iGain]->Fill(e[iX][iZ][iGain],t[iX][iZ][iGain]);
	else {
	  sprintf(hname,"%d_%d_%d_%d",fMod,iX,iZ,iGain);
	  sprintf(htitl,"Energy vs TOF for crystal %d_%d_%d and gain %d",fMod,iX,iZ,iGain);
	  fTimeEnergy[iX][iZ][iGain] = new TH2F(hname,htitl,1024,0.,1024.,100,0.,100);
	  fTimeEnergy[iX][iZ][iGain]->Fill(e[iX][iZ][iGain],t[iX][iZ][iGain]);
	  fHistoArray.Add(fTimeEnergy[iX][iZ][iGain]);
	}
      }

    }
  }

}

//-------------------------------------------------------------------
void AliPHOSDA1::UpdateHistoFile()
{
  // Write histograms to file

  if(!fWriteToFile) return;
  if(!fHistoFile) return;
  if(!fHistoFile->IsOpen()) return;

  TH1F* hist1=0;
  TH2F* hist2=0;

  for(Int_t iX=0; iX<64; iX++) {
    for(Int_t iZ=0; iZ<56; iZ++) {

      hist1 = fHgLgRatio[iX][iZ];
      if(hist1) hist1->Write(hist1->GetName(),TObject::kWriteDelete);

      for(Int_t iGain=0; iGain<2; iGain++) {
	hist2 = fTimeEnergy[iX][iZ][iGain];
	if(hist2) hist2->Write(hist2->GetName(),TObject::kWriteDelete);
      } 

    }
  }

}

//-----------------------------------------------------------------------
void AliPHOSDA1::SetWriteToFile(Bool_t write)
{
  if(!write) { 
    fWriteToFile = write;
    return;
  }

  if(!fHistoFile) {
    char rootname[128];
    sprintf(rootname,"%s.root",GetName());
    fHistoFile =  new TFile(rootname,"update");
  } 
  
  fWriteToFile = write;
}