/**
 * \file CaloFranzini.cpp
 * \author Emiliano Mocchiutti (2007/07/18)
 */
//
// headers
//
#include <CaloFranzini.h>
//--------------------------------------
/**
 * Default constructor 
 */
CaloFranzini::CaloFranzini(){
  Clear();
}

CaloFranzini::CaloFranzini(PamLevel2 *l2p){  
  //
  file = NULL;
  brig = NULL;
  nbin = 0;
  //
  L2 = l2p;
  //
  if ( !L2->IsORB() ) printf(" WARNING: OrbitalInfo Tree is needed, the plugin could not work properly without it \n");
  //
  // Default variables
  //
  debug = false;
  dolong = true;
  dofull = false;
  sntr = 0;
  //
  sel = true;
  cont = false;
  N = 0;
  NC = 43;
  //
  mask18b = -1;
  //
  Clear();
  //
}

void CaloFranzini::Clear(){
  //
  OBT = 0;
  PKT = 0;
  atime = 0;
  longtzeta = -100.;
  fulltzeta = -100.;
  degfre = 0;
  memset(estrip, 0, 2*22*96*sizeof(Float_t));
  memset(qplane, 0, 43*sizeof(Float_t));
  //
}

void CaloFranzini::Print(){
  //
  Process();
  //
  printf("========================================================================\n");
  printf(" OBT: %u PKT: %u ATIME: %u \n",OBT,PKT,atime);
  printf(" debug                [debug flag]:.. %i\n",debug);
  printf(" degree of freedom                :.. %i\n",this->GetDegreeOfFreedom());  
  printf(" longtzeta                        :.. %f\n",longtzeta);  
  printf(" longtzeta normalized             :.. %f\n",this->GetNormLongTZeta());  
  //  printf(" fulltzeta                        :.. %f\n",fulltzeta);  
  //  printf(" longtzeta normalized             :.. %f\n",this->GetNormFullTZeta());  
  printf("========================================================================\n");
  //
}

void CaloFranzini::Delete(){
  //
  if ( file ) file->Close();
  //
  Clear();
  //
}

void CaloFranzini::SetNoWpreSampler(Int_t n){
  if ( NC+n < 23 ){
    N = n;
  } else {
    printf(" ERROR! Calorimeter is made of 22 W planes\n");
    printf(" you are giving N presampler = %i and N calo = %i \n",n,NC);
    printf(" WARNING: using default values NWpre = 0, NWcalo = 22\n");
    NC = 43;
    N = 0;
  };
}

void CaloFranzini::SetNoWcalo(Int_t n){
  if ( N+n < 23 ){
    NC = n*2;
    if ( NC >37 ) NC--;
  } else {
    printf(" ERROR! Calorimeter is made of 22 W planes\n");
    printf(" you are giving N W presampler = %i and N W calo = %i \n",N,n);
    printf(" WARNING: using default values NWpre = 0, NWcalo = 22\n");
    NC = 43;
    N = 0;
  };
}

void CaloFranzini::Process(){
  this->Process(0);
}

void CaloFranzini::Process(Int_t itr){
  //  
  if ( !L2 ){
    printf(" ERROR: cannot find PamLevel2 object, use the correct constructor or check your program!\n");
    printf(" ERROR: CaloFranzini variables _NOT_ filled \n");
    return;
  };
  //
  if ( !nbin || !file || !brig ){
    printf(" ERROR: it seems covariance matrix file has not been opened (CaloFranzini::Open()) \n");
    printf(" ERROR: CaloFranzini variables _NOT_ filled \n");
    return;
  };
  //
  Bool_t newentry = false;
  //
  if ( L2->IsORB() ){
    if ( L2->GetOrbitalInfo()->pkt_num != PKT || L2->GetOrbitalInfo()->OBT != OBT || L2->GetOrbitalInfo()->absTime != atime || itr != sntr ){
      newentry = true;
      OBT = L2->GetOrbitalInfo()->OBT;
      PKT = L2->GetOrbitalInfo()->pkt_num;
      atime = L2->GetOrbitalInfo()->absTime;
      sntr = itr;
    };
  } else {
    newentry = true;
  };
  //
  if ( !newentry ) return;
  //
  // Some variables
  //
  if ( debug ) printf(" Processing event at OBT %u PKT %u time %u \n",OBT,PKT,atime);
  //
  this->Clear();
  //
  Float_t rig = L2->GetTrack(itr)->GetTrkTrack()->GetRigidity();
  //
  // Fill the estrip matrix
  //
  Int_t nplane = 0;
  Int_t view = 0;
  Int_t plane = 0;
  Int_t strip = 0;
  Float_t mip = 0.;
  for ( Int_t i=0; i<L2->GetCaloLevel1()->istrip; i++ ){
    //
    mip = L2->GetCaloLevel1()->DecodeEstrip(i,view,plane,strip);
    //
    estrip[view][plane][strip] = mip;
    //    
    nplane = 1 - view + 2 * (plane - N);
    if ( nplane > (37-(2*N)) ) nplane--; 
    //
    if ( plane == (18+N) ) mip = 0.;
    if ( nplane > -1 ) qplane[nplane] += mip;
    //
  };
  //
  //
  //
  if ( dolong ){
    //
    if ( cont ){
      for (Int_t i=0; i<22; i++){
 	if ( i == (18+N) ){
	  mask18b =  1 + 2 * (i - N);
	  break;
	};
      };
    };  
    //  
    if ( sel ){
      for (Int_t i=0; i<22; i++){
 	if ( i == (18-N) ){
	  mask18b =  1 + 2 * (i - N);
	  break;
	};
      };
    };
    //
    if ( mask18b == 37 ) mask18b = -1;
    //
    Int_t dgf = 43;
    //
    for (Int_t i=0; i < 22; i++){
      if ( L2->GetTrack(itr)->GetCaloTrack()->tibar[i][1] < 0 ){
	dgf = 2 * i;
	break;
      };
      if ( L2->GetTrack(itr)->GetCaloTrack()->tibar[i][0] < 0 ){
      dgf = 1 + 2 * i;
      break;
      };
    };
    //
    if ( dgf < 43 && dgf > 37 ) dgf--; 
    // 
    degfre = TMath::Min(dgf,NC);
    //
    if ( degfre > 0 ){
      TArrayF *qplmean = this->LoadLongAverage(rig);
      TMatrixD *lmatrix = this->LoadCovarianceMatrix(rig);
      for (Int_t i = 0; i < degfre; i++){
	if ( i != mask18b ){
	  for (Int_t j = 0; j < degfre; j++){	
	    if ( j != mask18b ){
	      longtzeta += (qplane[i]-qplmean->At(i)) * (*lmatrix)[i][j] * (qplane[j]-qplmean->At(j));
	    };
	  };
	};
      };
    };
  };
  if ( dofull ){
    printf(" ERROR: NOT IMPLEMENTED YET\n");
    printf(" ERROR: CaloFranzini variables _NOT_ filled \n");
  };  
  //
  if ( debug ) this->Print();
  if ( debug ) printf(" exit \n");
}


Float_t CaloFranzini::GetNormLongTZeta(){
  Process(); 
  Float_t normz = 0.;
  if ( degfre > 0 ) normz = longtzeta/(Float_t)degfre;
  return normz; 
}

Float_t CaloFranzini::GetNormFullTZeta(){
  Process(); 
  Float_t normz = 0.;
  if ( degfre > 0 ) normz = fulltzeta/(Float_t)degfre;
  return normz; 
}

Bool_t CaloFranzini::CreateMatrixFile(TString matrixfile){  
  //
  file = new TFile(matrixfile.Data(),"READ");
  //
  if ( !file || file->IsZombie() ){
    file = new TFile(matrixfile.Data(),"RECREATE"); 
    printf(" Create file %s \n",file->GetName());
  } else {
    printf(" ERROR: file %s already existing!\n Choose another name or delete the old file\n",matrixfile.Data());
    return(false);
  };
  //
  return(true);
  //
}

void CaloFranzini::WriteNumBin(Int_t numbin){
  file->cd();
  TArrayI nbi(1, &numbin);
  file->WriteObject(&nbi, "nbinenergy");
}

void CaloFranzini::WriteRigBin(TArrayF *rigbin){
  file->cd();
  //  rigbin->Write("binrig");
  file->WriteObject(&(*rigbin), "binrig");
}

void CaloFranzini::WriteLongMean(TArrayF *qpl, Int_t bin){
  file->cd();
  TString name = Form("qplmeann%i",bin);
  file->WriteObject(&(*qpl),name.Data());
}

void CaloFranzini::WriteInvertedLongMatrix(TMatrixD mat, Int_t bin){
  file->cd();
  TString name = Form("matrixn%i",bin);
  //  mat.Write(name.Data());
  file->WriteObject(&mat,name.Data());
}

void CaloFranzini::WriteLongMatrix(TMatrixD *mat, Int_t bin){
  file->cd();
  TString name = Form("origmatrixn%i",bin);
  //  mat.Write(name.Data());
  file->WriteObject(&(*mat),name.Data());
}

void CaloFranzini::CloseMatrixFile(){
  file->cd();
  file->Close();
}


Bool_t CaloFranzini::Open(TString matrixfile){  
  //
  // find matrix file
  //
  if ( !strcmp(matrixfile.Data(),"") ){
    if (dolong) matrixfile = (TString)gSystem->ExpandPathName("$PAM_CALIB")+"/cal-param/covmatrix_longel.root";    
    if (dofull) matrixfile = (TString)gSystem->ExpandPathName("$PAM_CALIB")+"/cal-param/covmatrix_fullel.root";    
  };
  //
  file = new TFile(matrixfile.Data(),"READ");
  //
  if ( !file || file->IsZombie() ){
    printf(" ERROR: cannot open file %s \n",matrixfile.Data());
    return(false);
  };
  //
  TArrayI *numbin = (TArrayI*)file->Get("nbinenergy");
  if ( !numbin ){
    printf(" ERROR: cannot read number of bins from file %s \n",matrixfile.Data());
    return(false);
  };
  nbin = (Int_t)numbin->At(0);
  if ( nbin <= 0 ){
    printf(" ERROR: cannot work with 0 energy bins (from file %s) \n",matrixfile.Data());
    return(false);
  };
  //
  brig = (TArrayF*)file->Get("binrig");
  if ( !brig ){
    printf(" ERROR: cannot read rigidity binning from file %s \n",matrixfile.Data());
    return(false);
  };
  //
  return(true);
  //
}

TMatrixD *CaloFranzini::LoadCovarianceMatrix(Float_t rig){
  //
  TString name;
  for (Int_t i = 0; i<nbin-1; i++){
    if ( rig>=brig->At(i) && rig < brig->At(i+1) ){
      name = Form("matrixn%i",i);
      break;
    };
  };
  if ( rig < brig->At(0) ){
    printf(" WARNING: Event with rigidity lower than the first covariance matrix bin (rig = %f, lower limit = %f)\n",rig,brig->At(0));
    name = "matrixn0";
    printf(" Using matrix %s \n",name.Data());
  };
  if ( rig >= brig->At(nbin-1) ){
    printf(" WARNING: Event with rigidity higher than the last covariance matrix bin (rig = %f, upper limit = %f)\n",rig,brig->At(nbin-1));
    name = Form("matrixn%i",nbin-2);
    printf(" Using matrix %s \n",name.Data());
  };
  //
  TMatrixD *matrix = (TMatrixD*)file->Get(name.Data());
  //
  return(matrix);
  //
}


TArrayF *CaloFranzini::LoadLongAverage(Float_t rig){
  //
  TString name;
  for (Int_t i = 0; i<nbin-1; i++){
    if ( rig>=brig->At(i) && rig < brig->At(i+1) ){
      name = Form("qplmeann%i",i);
      break;
    };
  };
  if ( rig < brig->At(0) ){
    printf(" WARNING: Event with rigidity lower than the first qplmean bin (rig = %f, lower limit = %f)\n",rig,brig->At(0));
    name = "qplmeann0";
    printf(" Using qplmean %s \n",name.Data());
  };
  if ( rig >= brig->At(nbin-1) ){
    printf(" WARNING: Event with rigidity higher than the last qplmean bin (rig = %f, upper limit = %f)\n",rig,brig->At(nbin-1));
    name = Form("qplmeann%i",nbin-2);
    printf(" Using qplmean %s \n",name.Data());
  };
  //
  TArrayF *qplmean = (TArrayF*)file->Get(name.Data());
  //
  return(qplmean);
  //
}



void CaloFranzini::DrawLongAverage(Float_t rig){
  //
  TArrayF *ll = this->LoadLongAverage(rig);
  //
  gStyle->SetLabelSize(0.04);
  gStyle->SetNdivisions(510,"XY");
  //
  TString hid = Form("cfralongvyvx");	
  TCanvas *tcf  = dynamic_cast<TCanvas*>(gDirectory->FindObject(hid));
  if ( tcf ){
    tcf->cd();
  } else {
    tcf = new TCanvas(hid,hid);
  };
  //
  TString thid = Form("hfralongvyvx");	
  TH1F *thf  = dynamic_cast<TH1F*>(gDirectory->FindObject(thid));
  if ( thf ) thf->Delete();
  thf = new TH1F(thid,thid,44,-0.5,43.5);
  tcf->cd();
  //  Int_t pp=0;
  Float_t qpl[43];
  for (Int_t st=0;st<43;st++){
    qpl[st] = ll->At(st);
  };
  for (Int_t st=0;st<44;st++){
    if ( st == 37 ){
      thf->Fill(st,0.);
    } else {
      Int_t ss = st;
      if ( st > 37 ) ss--;
      thf->Fill(st,qpl[ss]);
    };
  };
  thf->Draw();
  tcf->Modified();
  tcf->Update();
  //
  gStyle->SetLabelSize(0);
  gStyle->SetNdivisions(1,"XY");
  //
};