#ifndef ALIANALYSISTASKMUONREFIT_H
#define ALIANALYSISTASKMUONREFIT_H
/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 * See cxx source for full Copyright notice                               */

/* $Id$ */ 

/// \ingroup muondep
/// \class AliAnalysisTaskMuonRefit
/// \brief intermediate task for refitting
//Author: Philippe Pillot - SUBATECH Nantes

#include <TString.h>
#include "AliMUONConstants.h"
#include "AliAnalysisTaskSE.h"

class AliMUONVCluster;
class AliMUONGeometryTransformer;
class AliMUONESDInterface;
class AliMUONRefitter;

class AliAnalysisTaskMuonRefit : public AliAnalysisTaskSE {
public:
  
  AliAnalysisTaskMuonRefit();
  AliAnalysisTaskMuonRefit(const char *name);
  virtual ~AliAnalysisTaskMuonRefit();
  
  /// Set location of the default OCDB storage (if not set use "raw://")
  void SetDefaultStorage(const char* ocdbPath) { fDefaultStorage = ocdbPath; }
  
  // reset the cluster resolution (by default use the one set in the recoParam)
  void ResetClusterResolution(Int_t chId, Double_t valNB, Double_t valB);
  void ResetClusterResolution(Double_t valNB[10], Double_t valB[10]);
  
  /// Enable track improvement (clusters/tracks that do not pass the sigma cut will be removed)
  /// If sigmaCut < 0: use the one set in the recoParam
  /// By default the "improveTrack" flag and the sigma cut are taken from the recoParam
  void ImproveTracks(Bool_t flag = kTRUE, Double_t sigmaCut = -1.) {fImproveTracks = flag; fSigmaCut = sigmaCut;} 
  
  /// Set the sigma cut for tracker/trigger track matching (by default use the one set in the recoParam)
  void SetSigmaCutForTrigger(Double_t val) {fSigmaCutForTrigger = val;}
  
  void ReAlign(const char* oldAlignStorage = 0x0, const char* newAlignStorage = "");
  
  virtual void   UserCreateOutputObjects();
  virtual void   UserExec(Option_t *);
  virtual void   NotifyRun();
  virtual void   Terminate(Option_t *);
  
private:
  
  /// Not implemented
  AliAnalysisTaskMuonRefit(const AliAnalysisTaskMuonRefit& rhs);
  /// Not implemented
  AliAnalysisTaskMuonRefit& operator = (const AliAnalysisTaskMuonRefit& rhs);
  
  void ModifyCluster(AliMUONVCluster& cl);
  
private:
  
  Double_t fClusterResNB[10]; ///< cluster resolution in non-bending direction
  Double_t fClusterResB[10];  ///< cluster resolution in bending direction
  
  TString  fDefaultStorage;        ///< location of the default OCDB storage
  Bool_t   fImproveTracks;         ///< enable track improvement
  Double_t fSigmaCut;              ///< sigma cut for track improvement
  Double_t fSigmaCutForTrigger;    ///< sigma cut for tracker/trigger track matching
  Bool_t   fReAlign;               ///< flag telling wether to re-align the spectrometer or not before computing resolution
  TString  fOldAlignStorage;       ///< location of the OCDB storage where to find old MUON/Align/Data (use the default one if empty)
  TString  fNewAlignStorage;       ///< location of the OCDB storage where to find new MUON/Align/Data (use the default one if empty)
  AliMUONGeometryTransformer* fOldGeoTransformer; //!< geometry transformer used to recontruct the present data
  AliMUONGeometryTransformer* fNewGeoTransformer; //!< new geometry transformer containing the new alignment to be applied
  
  AliMUONESDInterface* fESDInterface; //!< esd interface to recover muon objects
  AliMUONRefitter*     fRefitter;     //!< refitter object
  
  ClassDef(AliAnalysisTaskMuonRefit, 1); // track refitter
};

//________________________________________________________________________
inline void AliAnalysisTaskMuonRefit::ResetClusterResolution(Int_t chId, Double_t valNB, Double_t valB)
{
  /// set chamber non-bending and bending resolutions
  if (chId < 0 || chId >= AliMUONConstants::NTrackingCh()) return;
  fClusterResNB[chId] = valNB;
  fClusterResB[chId] = valB;
}

//________________________________________________________________________
inline void AliAnalysisTaskMuonRefit::ResetClusterResolution(Double_t valNB[10], Double_t valB[10])
{
  /// set chambers non-bending and bending resolutions
  for (Int_t i = 0; i < AliMUONConstants::NTrackingCh(); i++) {
    fClusterResNB[i] = valNB[i];
    fClusterResB[i] = valB[i];
  }
}

//________________________________________________________________________
inline void AliAnalysisTaskMuonRefit::ReAlign(const char* oldAlignStorage, const char* newAlignStorage)
{
  /// Set the flag to activate the re-alignment and the specific storage where to find the old/new alignment data.
  /// If oldAlignStorage = 0x0 we assume the spectrometer was not aligned before (default geometry)
  /// If old(new)AlignStorage = "" we assume the old(new) alignment data are in the default storage
  if (oldAlignStorage) fOldAlignStorage = oldAlignStorage;
  else fOldAlignStorage = "none";
  fNewAlignStorage = newAlignStorage;
  fReAlign = kTRUE;
}

#endif