// HitXYPlane2_t.cpp

// Test component HitXYPlane2.

#include "HitXYPlane2.h"
#include <cassert>
#include <string>
#include "trfbase/ETrack.h"
#include <cmath>
#include <sstream>
#include "objstream/StdObjStream.hpp"
#include "trfutil/TRFMath.h"
#include "trfutil/trfstream.h"
#include "objstream/ObjData.hpp"

#ifndef DEFECT_NO_STDLIB_NAMESPACES
using std::cout;
using std::cerr;
using std::endl;
using std::string;
using std::fabs;
using std::ostringstream;
using std::istringstream;
#endif

using namespace trf;

// calculate hm from a track vector
HitVector calc_hm(TrackVector vec) {
  double v_track = vec(SurfXYPlane::IV);
  double z_track = vec(SurfXYPlane::IZ);

  return HitVector( v_track, z_track );
}

// calculate dhm from error matrix
HitError calc_dhm(TrackError err) {
  double evv_track = err(SurfXYPlane::IV,SurfXYPlane::IV);
  double evz_track = err(SurfXYPlane::IV,SurfXYPlane::IZ);
  double ezz_track = err(SurfXYPlane::IZ,SurfXYPlane::IZ);

  return HitError( evv_track, evz_track, ezz_track);
}

// compare HitError and error matrix of the cluster

bool hiteqsm(const HitError& lhs, const HitError& rhs) {
    if ( lhs.size() != rhs.size() || lhs.size()!=2 ) return false;
    return ( (lhs(0,0) == rhs(ClusXYPlane2::IV,ClusXYPlane2::IV)) &&
             (lhs(0,1) == rhs(ClusXYPlane2::IV,ClusXYPlane2::IZ)) &&
             (lhs(1,1) == rhs(ClusXYPlane2::IZ,ClusXYPlane2::IZ)) );
} 

// compare HitVector and vector of the cluster

bool hiteqvec(const HitVector& lhs, const HitVector& rhs) {
    if ( lhs.size() != rhs.size() || lhs.size()!=2 ) return false;
    return ( (lhs(0) == rhs(ClusXYPlane2::IV)) &&
             (lhs(1) == rhs(ClusXYPlane2::IZ)) );
} 


//**********************************************************************

int main( ) {

  string component = "HitXYPlane2";
  string ok_prefix = component + " (I): ";
  string error_prefix = component + " test (E): ";

  cout << ok_prefix
       << "-------- Testing component " + component
          + ". --------" << endl;

  // Make sure assert is enabled.
  bool assert_flag = false;
  assert ( ( assert_flag = true, assert_flag ) );
  if ( ! assert_flag ) {
    cerr << "Assert is disabled" << endl;
    return 1;
  }

  //********************************************************************
  cout << trf_format;

  cout << ok_prefix << "Test cluster constructors." << endl;

  enum {
  IV = ClusXYPlane2::IV,
  IZ = ClusXYPlane2::IZ
  };

  McIdList mcids;
  mcids.push_back(1);
  mcids.push_back(2);

  double dist1 = 10.0;
  double phi1 = PI/3.;
  double v1 = 1.0;
  double z1 = 1.1;
  HitError dhm1(2);
  dhm1(ClusXYPlane2::IV,ClusXYPlane2::IV) = 0.02;
  dhm1(ClusXYPlane2::IV,ClusXYPlane2::IZ) = 0.01;
  dhm1(ClusXYPlane2::IZ,ClusXYPlane2::IZ) = 0.03;
  SurfXYPlane szp1(dist1,phi1);
  ClusXYPlane2& hcp1 = *new ClusXYPlane2(dist1,phi1,v1,z1,dhm1(ClusXYPlane2::IV,ClusXYPlane2::IV),dhm1(ClusXYPlane2::IZ,ClusXYPlane2::IZ),dhm1(ClusXYPlane2::IV,ClusXYPlane2::IZ));
  ClusXYPlane2& hcp1a = *new ClusXYPlane2(dist1,phi1,v1,z1,dhm1(ClusXYPlane2::IV,ClusXYPlane2::IV),dhm1(ClusXYPlane2::IZ,ClusXYPlane2::IZ),dhm1(ClusXYPlane2::IV,ClusXYPlane2::IZ),mcids);
  
  assert(hcp1==hcp1a);
  assert(hcp1.get_v() == v1 );
  assert(hcp1.get_dhm() == dhm1 );
  assert(hcp1.get_hm() == HitVector(v1,z1) );
  assert(hcp1.get_z() == z1 );
  assert(hcp1.get_dv2() == 0.02 );
  assert(hcp1.get_dz2() == 0.03 );
  assert(hcp1.get_dvdz() == 0.01 );
  assert(hcp1a.get_v() == v1 );
  assert(hcp1a.get_z() == z1 );
  assert(hcp1a.get_dv2() == 0.02 );
  assert(hcp1a.get_dz2() == 0.03 );
  assert(hcp1a.get_dvdz() == 0.01 );
  assert(hcp1.get_mc_ids().size()==0);
  assert(hcp1a.get_mc_ids().size()==2);

  ClusterPtr phcp1 = &hcp1;
  cout << hcp1 << endl;
  ClusXYPlane2 hcp1c = hcp1;
  cout << hcp1c << endl;
  double dist2 = 20.0;
  double phi2 = PI/5.;
  double v2 = 2.0;
  double z2 = 2.2;
  HitVector hm2(2);
  hm2(ClusXYPlane2::IV) = v2;
  hm2(ClusXYPlane2::IZ) = z2;
  HitError dhm2(2);
  dhm2(ClusXYPlane2::IV,ClusXYPlane2::IV) = 0.022;
  dhm2(ClusXYPlane2::IV,ClusXYPlane2::IZ) = 0.012;
  dhm2(ClusXYPlane2::IZ,ClusXYPlane2::IZ) = 0.032;
  ClusXYPlane2& hcp2 = *new ClusXYPlane2(dist2,phi2,v2,z2,dhm2);
  ClusXYPlane2& hcp2a = *new ClusXYPlane2(dist2,phi2,v2,z2,dhm2);
  assert(hcp2==hcp2a);
  ClusterPtr phcp2 = &hcp2;
  assert(hcp2.get_v() == v2 );
  assert(hcp2.get_z() == z2 );
  assert(hcp2.get_dv2() == 0.022 );
  assert(hcp2.get_dz2() == 0.032 );
  assert(hcp2.get_dvdz() == 0.012 );
  assert(hcp2a.get_v() == v2 );
  assert(hcp2a.get_z() == z2 );
  assert(hcp2a.get_dv2() == 0.022 );
  assert(hcp2a.get_dz2() == 0.032 );
  assert(hcp2a.get_dvdz() == 0.012 );
 
  HitVector hm1(2);
  hm1(ClusXYPlane2::IV) = v1;
  hm1(ClusXYPlane2::IZ) = z1;
  ClusXYPlane2 hcp3(dist1,phi1,hm1,dhm1);
  ClusXYPlane2 hcp3a(dist1,phi1,hm1,dhm1,mcids);
  ClusXYPlane2 hcp3b(hcp3a);
  ClusXYPlane2 hcp3c(hcp3);

  assert(hcp3.get_v() == v1 );
  assert(hcp3.get_z() == z1 );
  assert(hcp3.get_dv2() == 0.02 );
  assert(hcp3.get_dz2() == 0.03 );
  assert(hcp3.get_dvdz() == 0.01 );
  assert(hcp3a.get_v() == v1 );
  assert(hcp3a.get_z() == z1 );
  assert(hcp3a.get_dv2() == 0.02 );
  assert(hcp3a.get_dz2() == 0.03 );
  assert(hcp3a.get_dvdz() == 0.01 );
  assert(hcp3b==hcp3a);
  assert(hcp3==hcp3c);
  assert(hcp3.get_mc_ids().size()==0);
  assert(hcp3a.get_mc_ids().size()==2);
  assert(hcp3c.get_mc_ids().size()==0);
  assert(hcp3b.get_mc_ids().size()==2);
  

  // test two diferent constructors

  assert( hcp3 == hcp1 );
  //********************************************************************

  cout << ok_prefix << "Test cluster type ID." << endl;
  cout << hcp1.get_type() << endl;
  cout << hcp2.get_type() << endl;
  assert( hcp1.get_type() != 0 );
  assert( hcp1.get_type() == hcp2.get_type() );

  //********************************************************************

  cout << ok_prefix << "Test cluster accessors." << endl;
  cout << hcp1 << endl;
  cout << hcp1.get_surface() << endl;
  cout << hcp1.get_hm() << endl;
  cout << hcp1.get_dhm() << endl;
  assert( hcp1.get_surface() == szp1 );
  assert( hcp1.get_hm() == hm1 );
  assert( hcp1.get_dhm() == dhm1 );

  //********************************************************************

  cout << ok_prefix << "Generate a hit." << endl;
  TrackVector vec;
  TrackError err;
  HitDerivative der_expect(2);
  der_expect(0,0) = 1.;
  der_expect(1,1) = 1.;
  vec(SurfXYPlane::IV) = 1.1;
  vec(SurfXYPlane::IZ) = 40.0;
  err(SurfXYPlane::IV,SurfXYPlane::IV) = 0.04;
  err(SurfXYPlane::IV,SurfXYPlane::IZ) = 0.03;
  err(SurfXYPlane::IZ,SurfXYPlane::IZ) = 0.02;
  ETrack tre1(SurfacePtr(szp1.new_pure_surface()),vec,err);
  HitList tclus11 = phcp1->predict(tre1);
  assert( tclus11.size() == 1 );
  Hit& pre11 = *tclus11.front();
  double maxdiff = 1.e-12;
  cout << pre11.size() << endl;
  assert( pre11.size() == 2);
  cout << pre11.measured_vector() << endl;
  assert( ((const HitXYPlane2&)pre11).get_v() == pre11.predicted_vector()(IV) );
  assert( ((const HitXYPlane2&)pre11).get_z() == pre11.predicted_vector()(IZ) );
  assert( ((const HitXYPlane2&)pre11).get_dv2() == pre11.predicted_error()(IV,IV) );
  assert( ((const HitXYPlane2&)pre11).get_dz2() == pre11.predicted_error()(IZ,IZ) );
  assert( ((const HitXYPlane2&)pre11).get_dvdz() == pre11.predicted_error()(IZ,IV) );
  assert( hiteqvec(pre11.measured_vector(), hm1) );
  cout << pre11.measured_error() << endl;
  assert( hiteqsm(pre11.measured_error(), dhm1) );
  cout << pre11.predicted_vector() << endl;
  assert( pre11.predicted_vector() == calc_hm(vec) );
  cout << pre11.predicted_error() << endl;
  assert( pre11.predicted_error() == calc_dhm(err) );
  cout << pre11.dhit_dtrack() << endl;
  assert( pre11.dhit_dtrack() == der_expect );
  cout << pre11.difference_vector() << endl;
  assert( fabs(pre11.difference_vector()(0) - 
               calc_hm(vec)(0) + hm1(0)) < maxdiff );
  assert( fabs(pre11.difference_vector()(1) - 
               calc_hm(vec)(1) + hm1(1)) < maxdiff );
  //********************************************************************

  cout << ok_prefix << "Generate hit for a different track."
       << endl;
  vec(SurfXYPlane::IV) = 1.2;
  ETrack tre2(SurfacePtr(szp1.new_pure_surface()),vec,err);
  HitList tclus12 = phcp1->predict(tre2);
  assert( tclus12.size() == 1 );
  Hit& pre12 = *tclus12.front();
  cout << pre12.size() << endl;
  assert( pre12.size() == 2);
  cout << pre12.measured_vector() << endl;
  assert( hiteqvec(pre12.measured_vector(), hm1) );
  cout << pre12.measured_error() << endl;
  assert( hiteqsm(pre12.measured_error(), dhm1) );
  cout << pre12.predicted_vector() << endl;
  assert( pre12.predicted_vector() == calc_hm(vec) );
  cout << pre12.predicted_error() << endl;
  assert( pre12.predicted_error() == calc_dhm(err) );
  cout << pre12.dhit_dtrack() << endl;
  assert( pre12.dhit_dtrack() == der_expect );
  cout << pre12.difference_vector() << endl;
  assert( fabs(pre12.difference_vector()(0) - 
          calc_hm(vec)(0) + hm1(0)) < maxdiff );
  assert( fabs(pre12.difference_vector()(1) - 
          calc_hm(vec)(1) + hm1(1)) < maxdiff );
  // same cluster ==> same hit (even though track changes)
  assert( pre11 == pre11 );
  assert( ! ( pre11 != pre11 ) );
  assert( pre11 == pre12 );

  //********************************************************************

  cout << ok_prefix << "Generate hit for a different cluster."
       << endl;
  HitList tclus22 = phcp2->predict(tre2);
  assert( tclus22.size() == 1 );
  Hit& pre22 = *tclus22.front();
  cout << pre22.size() << endl;
  assert( pre22.size() == 2);
  cout << pre22.measured_vector() << endl;
  assert( hiteqvec(pre22.measured_vector(), hm2) );
  cout << pre22.measured_error() << endl;
  assert( hiteqsm(pre22.measured_error(), dhm2) );
  cout << pre22.predicted_vector() << endl;
  assert( pre22.predicted_vector() == calc_hm(vec) );
  cout << pre22.predicted_error() << endl;
  assert( pre22.predicted_error() == calc_dhm(err) );
  cout << pre22.dhit_dtrack() << endl;
  assert( pre22.dhit_dtrack() == der_expect );
  cout << pre22.difference_vector() << endl;
  assert( fabs(pre22.difference_vector()(0) - 
               calc_hm(vec)(0) + hm2(0)) < maxdiff );
  assert( fabs(pre22.difference_vector()(1) - 
               calc_hm(vec)(1) + hm2(1)) < maxdiff );
  // different cluster ==> different hit
  assert( pre22 != pre11 );
  assert( ! ( pre22 == pre11 ) );
  assert( pre22 != pre12 );

  //********************************************************************

  cout << ok_prefix << "Update hit." << endl;
  cout << pre11 << endl;
  pre11.update(tre2);
  cout << pre11 << endl;
  assert( pre11.size() == 2);
  cout << pre11.measured_vector() << endl;
  assert( hiteqvec(pre11.measured_vector(), hm1) );
  cout << pre11.measured_error() << endl;
  assert( hiteqsm(pre11.measured_error(), dhm1) );
  cout << pre11.predicted_vector() << endl;
  assert( pre11.predicted_vector() == calc_hm(vec) );
  cout << pre11.predicted_error() << endl;
  assert( pre11.predicted_error() == calc_dhm(err) );
  cout << pre11.dhit_dtrack() << endl;
  assert( pre11.dhit_dtrack() == der_expect );
  cout << pre11.difference_vector() << endl;
  assert( fabs(pre11.difference_vector()(0) - 
               calc_hm(vec)(0) + hm1(0)) < maxdiff );
  assert( fabs(pre11.difference_vector()(1) - 
               calc_hm(vec)(1) + hm1(1)) < maxdiff );
  //********************************************************************

  cout << ok_prefix << "Check hit type and equality." << endl;
  cout << HitXYPlane2::get_static_type();
  cout << pre11.get_type() << endl;
  cout << pre12.get_type() << endl;
  assert( pre11.get_type() != 0 );
  assert( pre11.get_type() == HitXYPlane2::get_static_type() );
  assert( pre11.get_type() == pre12.get_type() );

  //********************************************************************

  ObjTable::register_type<ClusXYPlane2>();
  
  cout << ok_prefix << "Write object data." << endl;
  McIdList mcids_h;
  mcids_h.push_back(2);
  mcids_h.push_back(4);
  mcids_h.push_back(8);
  { 
    HitError err(2);
    err(ClusXYPlane2::IV,ClusXYPlane2::IV) = 0.01;
    err(ClusXYPlane2::IV,ClusXYPlane2::IZ) = 0.0001;
    err(ClusXYPlane2::IZ,ClusXYPlane2::IZ) = 0.02;

    ObjPtr pobj( new ClusXYPlane2(12.3, 1.5, 0.1,0.9,err, mcids_h) );
    ostringstream mystream;
    StdObjStream objstream(mystream);
    objstream.write_object("obj1",pobj);
    cout << mystream.str() << endl;
    assert( ObjTable::has_object_name("obj1") );
    string::size_type pos = 0;
    assert( (pos=mystream.str().find( "obj1 ",pos)) != string::npos );
    assert( (pos=mystream.str().find( "ClusXYPlane2 ",pos)) != string::npos );
    assert( (pos=mystream.str().find( "dist",pos)) != string::npos );
    assert( (pos=mystream.str().find( "12.3 ",pos)) != string::npos );
    assert( (pos=mystream.str().find( "phi",pos)) != string::npos );
    assert( (pos=mystream.str().find( "1.5 ",pos)) != string::npos );
    assert( (pos=mystream.str().find( "z",pos)) != string::npos );
    assert( (pos=mystream.str().find( "0.9 ",pos)) != string::npos );
    assert( (pos=mystream.str().find( "v",pos)) != string::npos );
    assert( (pos=mystream.str().find( "0.1 ",pos)) != string::npos );
    assert( (pos=mystream.str().find( "dvdz",pos)) != string::npos );
    assert( (pos=mystream.str().find( "0.0001 ",pos)) != string::npos );
    assert( (pos=mystream.str().find( "dv2",pos)) != string::npos );
    assert( (pos=mystream.str().find( "0.01 ",pos)) != string::npos );
    assert( (pos=mystream.str().find( "dz2",pos)) != string::npos );
    assert( (pos=mystream.str().find( "0.02 ",pos)) != string::npos );
#ifdef ObjData_supports_lists
    assert( (pos=mystream.str().find( "mcids",pos)) != string::npos );
    assert( (pos=mystream.str().find( "2 ",pos)) != string::npos );
    assert( (pos=mystream.str().find( "4 ",pos)) != string::npos );
    assert( (pos=mystream.str().find( "8 ",pos)) != string::npos );
#endif
  }
  
  //********************************************************************

  cout << ok_prefix << "Read object data." << endl;
  {
    string istring = "[ obj2 ClusXYPlane2 dist=24.4 phi=2.8 v=0.1 z=0.9 dv2=1.3 dz2=0.3 dvdz=0.1";

#ifdef ObjData_supports_lists
    istring += " mcids=int( 2 4 8 )";
#endif
    istring += " ]";
    cout << istring << endl;
    istringstream isstrm(istring);
    {
      StdObjStream obstr(isstrm);
      string name = obstr.read_object();
      assert( name == "obj2" );
      const ClusXYPlane2* pobj;
      ObjTable::get_object(name,pobj);
      assert( pobj != 0 );
      cout << *pobj << endl;
      assert( pobj->get_type() == ClusXYPlane2::get_static_type() );
      assert( ((const SurfXYPlane&)(pobj->get_surface())).get_parameter(SurfXYPlane::DISTNORM) == 24.4 );
      assert( ((const SurfXYPlane&)(pobj->get_surface())).get_parameter(SurfXYPlane::NORMPHI) == 2.8 );
      assert( pobj->get_hm()(ClusXYPlane2::IV) == 0.1 );
      assert( pobj->get_hm()(ClusXYPlane2::IZ) == 0.9 );
      assert( pobj->get_dhm()(ClusXYPlane2::IV,ClusXYPlane2::IV) == 1.3 );
      assert( pobj->get_dhm()(ClusXYPlane2::IZ,ClusXYPlane2::IZ) == 0.3 );
      assert( pobj->get_dhm()(ClusXYPlane2::IV,ClusXYPlane2::IZ) == 0.1 );
#ifdef ObjData_supports_lists
      assert( pobj->get_mc_ids() == mcids_h );
#endif
    }
  }

  //********************************************************************

  cout << ok_prefix
       << "------------- All tests passed. -------------" << endl;
  return 0;

  //********************************************************************

}