//_________________________________________________________________________
//  TOF digit: member variables 
//  fSector  : TOF sector
//  fPlate   : TOF plate
//  fStrip   : strips number
//  fPadx    : pad number along x
//  fPadz    : pad number along z
//  fTdc     : TArrayF of TDC values
//  fAdc     : TArrayF of ADC values
//              
//  Getters, setters and member functions  defined here
//
//*-- Authors: F. Pierella, A. Seganti, D. Vicinanza

 
/**************************************************************************
 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *    
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  * 
 **************************************************************************/

#include <iostream.h>

#include "TArrayF.h"
#include "TArrayI.h"

#include "AliTOF.h"
#include "AliTOFSDigit.h"
#include "AliTOFConstants.h"
#include "AliRun.h"
#include "AliMC.h"

ClassImp(AliTOFSDigit)

////////////////////////////////////////////////////////////////////////
AliTOFSDigit::AliTOFSDigit()
{
//
// default ctor
//
  fNDigits = 0;
  fTdc = 0;
  fAdc = 0;
  fTracks = 0;
}

////////////////////////////////////////////////////////////////////////
AliTOFSDigit::AliTOFSDigit(Int_t tracknum, Int_t *vol,Float_t *digit)
{
//
// Constructor of digit object
//
  fSector = vol[0];
  fPlate  = vol[1];
  fStrip  = vol[2];
  fPadx   = vol[3];
  fPadz   = vol[4];
  fNDigits = 1;
  fTdc = new TArrayF(fNDigits);
  (*fTdc)[0] = digit[0];
  fAdc = new TArrayF(fNDigits);
  (*fAdc)[0] = digit[1];
  fTracks = new TArrayI(kMAXDIGITS*fNDigits);
  (*fTracks)[0] = tracknum;
  for (Int_t i = 1; i <kMAXDIGITS*fNDigits; i++) {
    (*fTracks)[i] = -1;
  }
}

////////////////////////////////////////////////////////////////////////
AliTOFSDigit::AliTOFSDigit(const AliTOFSDigit & digit)
{
  // 
  // copy ctor for AliTOFSDigit object
  //
  fSector = digit.fSector;
  fPlate  = digit.fPlate;
  fStrip  = digit.fStrip;
  fPadx   = digit.fPadx;
  fPadz   = digit.fPadz;
  fNDigits = digit.fNDigits;
  fTdc = new TArrayF(*digit.fTdc);  
  fAdc = new TArrayF(*digit.fAdc);
  fTracks = new TArrayI(*digit.fTracks);
}

////////////////////////////////////////////////////////////////////////
AliTOFSDigit::AliTOFSDigit(Int_t sector, Int_t plate, Int_t strip, Int_t padx,
Int_t padz, Float_t tdc, Float_t adc)
{
//
// Constructor for sdigit
//
  fSector = sector;
  fPlate  = plate;
  fStrip  = strip;
  fPadx   = padx;
  fPadz   = padz;  
  fNDigits = 1;
  fTdc = new TArrayF(fNDigits);
  (*fTdc)[0] = tdc;   
  fAdc = new TArrayF(fNDigits);
  (*fAdc)[0] = tdc;   
// no tracks were specified, set them to -1
  fTracks = new TArrayI(kMAXDIGITS*fNDigits);
  for (Int_t i = 0; i <kMAXDIGITS*fNDigits; i++) {
    (*fTracks)[i] = -1;
  }
}
   
////////////////////////////////////////////////////////////////////////
void AliTOFSDigit::GetLocation(Int_t *Loc) const
{
//
// Get the coordinates of the digit
// in terms of Sector - Plate - Strip - Pad
//

   Loc[0]=fSector;
   Loc[1]=fPlate;
   Loc[2]=fStrip;
   Loc[3]=fPadx;
   Loc[4]=fPadz;
}

////////////////////////////////////////////////////////////////////////
void AliTOFSDigit::Update(Int_t tdc, Int_t adc, Int_t track)
{
//
// Add charge and track
//

  Int_t sameTime = -1;

  for (Int_t i = 0; i < fNDigits; i++) {
    if (TMath::Abs(tdc-fTdc->At(i)) < AliTOFConstants::fgkTimeDiff) {
      sameTime = i;
      break;
    }
  }

  if (sameTime >= 0) {
    (*fAdc)[sameTime] += static_cast<Float_t>(adc);
// update track - find the first -1  value and replace it by the
// track number
    for (Int_t iTrack=0; iTrack<kMAXDIGITS; iTrack++) {
      if ((*fTracks)[sameTime*kMAXDIGITS+iTrack] == -1) {
	(*fTracks)[sameTime*kMAXDIGITS+iTrack] = track;
	break;
      }
// write warning about many tracks going to this pad
      if (iTrack == kMAXDIGITS) {
	cerr<<"WARNING: AliTOFSDigit::Update  Many hits in the padhit"<<endl;
	cerr<<"         ";
//	PrintPad();
      }
    }
  } else {
// add new time slot
    fNDigits++;
    fTdc->Set(fNDigits);
    (*fTdc)[fNDigits-1] = tdc;
    fAdc->Set(fNDigits);
    (*fAdc)[fNDigits-1] = adc;
    fTracks->Set(fNDigits*kMAXDIGITS);
    (*fTracks)[(fNDigits-1)*kMAXDIGITS] = track;
    for (Int_t i = 1; i <kMAXDIGITS; i++) {
      (*fTracks)[(fNDigits-1)*kMAXDIGITS+i] = -1;
    }
  }

}
////////////////////////////////////////////////////////////////////////
AliTOFSDigit::~AliTOFSDigit()
{
//
// dtor
//
  delete fTdc;
  delete fAdc;
  delete fTracks;
}

////////////////////////////////////////////////////////////////////////

Int_t AliTOFSDigit::GetTotPad() const
{
//
// Get the "total" index of the pad inside a Sector
// starting from the digits data.
//

  AliTOF* tof;
  
  if(gAlice){
     tof =(AliTOF*) gAlice->GetDetector("TOF");
  }else{
     printf("AliTOFSDigit::GetTotPad - No AliRun object present, exiting");
     return 0;
  }
  
  Int_t pad = fPadx+tof->GetNpadX()*(fPadz-1);
  Int_t before=0;

  switch(fPlate){ 
  case 1: before = 0;
          break;
  case 2: before = tof->GetNStripC();
          break;
  case 3: before = tof->GetNStripB() + tof->GetNStripC();
          break;
  case 4: before = tof->GetNStripA() + tof->GetNStripB() + tof->GetNStripC();
          break;
  case 5: before = tof->GetNStripA() + 2*tof->GetNStripB() + tof->GetNStripC();
          break;
  }
  
  Int_t strip = fStrip+before;
  Int_t padTot = tof->GetPadXStr()*(strip-1)+pad;
  return padTot;
}

////////////////////////////////////////////////////////////////////////
//void AliTOFSDigit::AddTrack(Int_t track)
//{
//
// Add a new and different track to the digit -- but to which digit??
// do not implemet this function
//
////////////////////////////////////////////////////////////////////////

// Overloading of Streaming, Sum and Comparison operators

////////////////////////////////////////////////////////////////////////
/*
Bool_t AliTOFSDigit::operator==(AliTOFSDigit const &digit) const
{
//
// Overloading of Comparison operator
//   
 if (fSector==digit.fSector &&
     fPlate==digit.fPlate &&
     fStrip==digit.fStrip &&
     fPadx==digit.fPadx &&
     fPadz==digit.fPadz &&
     fTdc==digit.fTdc &&
     fAdc==digit.fAdc) return kTRUE;
     else return kFALSE;
}
*/
////////////////////////////////////////////////////////////////////////
/*
ostream& operator << (ostream& out, const AliTOFSDigit &digit)
{
//
// Output streamer: output of the digit data
//
out << "Sector " << digit.fSector << ", Plate " << digit.fPlate << ", Strip " << digit.fStrip << endl;
out << "Padx" << digit.fPadx << ", Padz " << digit.fPadz << endl;
out << "TDC " << digit.fTdc->At(0) << ", ADC "<< digit.fAdc->At(0) << endl;
return out;
}
*/