/**************************************************************************
 * 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.                  *
 **************************************************************************/

/* $Id$ */

///////////////////////////////////////////////////////////////////////////////
//                                                                           //
// Class for TRD reconstruction                                              //
//                                                                           //
///////////////////////////////////////////////////////////////////////////////

#include <TFile.h>

#include "AliRunLoader.h"
#include "AliRawReader.h"
#include "AliLog.h"
#include "AliESDTrdTrack.h"
#include "AliESDEvent.h"

#include "AliTRDReconstructor.h"
#include "AliTRDclusterizer.h"
#include "AliTRDtracker.h"
#include "AliTRDpidESD.h"
#include "AliTRDgtuTrack.h"
#include "AliTRDrawData.h"
#include "AliTRDdigitsManager.h"
#include "AliTRDtrackerV1.h"
#include "AliTRDrecoParam.h"

ClassImp(AliTRDReconstructor)

Bool_t AliTRDReconstructor::fgkSeedingOn  = kFALSE;
Int_t  AliTRDReconstructor::fgStreamLevel = 0;      // Stream (debug) level
AliTRDrecoParam* AliTRDReconstructor::fgRecoParam = 0x0; 


//_____________________________________________________________________________
AliTRDReconstructor::~AliTRDReconstructor()                  { 
	if(fgRecoParam) delete fgRecoParam;
}



//_____________________________________________________________________________
void AliTRDReconstructor::ConvertDigits(AliRawReader *rawReader
				      , TTree *digitsTree) const
{
  //
  // Convert raw data digits into digit objects in a root tree
  //

  AliInfo("Convert raw data digits into digit objects [RawReader -> Digit TTree]");

  AliTRDrawData rawData;
  rawReader->Reset();
  rawReader->Select("TRD");
  AliTRDdigitsManager *manager = rawData.Raw2Digits(rawReader);
  manager->MakeBranch(digitsTree);
  manager->WriteDigits();
  delete manager;

}

//_____________________________________________________________________________
void AliTRDReconstructor::Reconstruct(AliRawReader *rawReader
                                    , TTree *clusterTree) const
{
  //
  // Reconstruct clusters
  //

  AliInfo("Reconstruct TRD clusters from RAW data [RawReader -> Cluster TTree]");

	// TODO move it to rec.C. check TPC
 	if (!fgRecoParam) fgRecoParam = AliTRDrecoParam::GetLowFluxParam();

  rawReader->Reset();
  rawReader->Select("TRD");

  // New (fast) cluster finder
  AliTRDclusterizer clusterer("clusterer","TRD clusterizer");
  clusterer.OpenOutput(clusterTree);
  clusterer.SetAddLabels(kFALSE);
  clusterer.Raw2ClustersChamber(rawReader);

}

//_____________________________________________________________________________
void AliTRDReconstructor::Reconstruct(TTree *digitsTree
                                    , TTree *clusterTree) const
{
  //
  // Reconstruct clusters
  //

  AliInfo("Reconstruct TRD clusters from Digits [Digit TTree -> Cluster TTree]");

	// TODO move it to rec.C. check TPC
  if (!fgRecoParam) fgRecoParam = AliTRDrecoParam::GetLowFluxParam();

  AliTRDclusterizer clusterer("clusterer","TRD clusterizer");
  clusterer.OpenOutput(clusterTree);
  clusterer.ReadDigits(digitsTree);
  clusterer.MakeClusters();

}

//_____________________________________________________________________________
AliTracker *AliTRDReconstructor::CreateTracker() const
{
  //
  // Create a TRD tracker
  //

  //return new AliTRDtracker(NULL);

	// TODO move it to rec.C. check TPC
 	if (!fgRecoParam) fgRecoParam = AliTRDrecoParam::GetLowFluxParam();
  return new AliTRDtrackerV1();

}

//_____________________________________________________________________________
void AliTRDReconstructor::FillESD(TTree* /*digitsTree*/
				, TTree* /*clusterTree*/
				, AliESDEvent* /*esd*/) const
{
  //
  // Fill ESD
  //

}