// HitCylPhiZ_t.cpp

// Test component HitCylPhiZ.

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

using namespace trf;

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

double stereo = 0.001;

// calculate phiz from a track vector
double calc_phiz(TrackVector vec) {
  return vec(0) + stereo*vec(1);
}

// calculate ephiz from error matrix
double calc_ephiz(TrackError err) {
  return err(0,0) + 2.0*stereo*err(0,1) + stereo*stereo*err(1,1);
}


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

int main( ) {

  string component = "HitCylPhiZ";
  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;
  }

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

  ObjTable::register_type<ClusCylPhiZ>();

  cout << trf_format;
  cout << ok_prefix << "Test cluster constructors." << endl;
  double r1 = 10.0;
  double phiz1 = 1.0;
  double dphiz1 = 0.01;
  SurfCylinder scy1(r1);
  ClusCylPhiZ* phcp1 = new ClusCylPhiZ(r1,phiz1,dphiz1,stereo);
  cout << *phcp1 << endl;
  ClusCylPhiZ hcp1c = *phcp1;
  cout << hcp1c << endl;
  double r2 = 20.0;
  double phiz2 = 2.0;
  double dphiz2 = 0.02;
  ClusCylPhiZ* phcp2 = new ClusCylPhiZ(r2,phiz2,dphiz2,stereo);

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

  cout << ok_prefix << "Test cluster type ID." << endl;
  cout << phcp1->get_type() << endl;
  cout << phcp2->get_type() << endl;
  assert( phcp1->get_type() != 0 );
  assert( phcp1->get_type() == phcp2->get_type() );

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

  cout << ok_prefix << "Test cluster accessors." << endl;
  cout << *phcp1 << endl;
  cout << phcp1->get_surface() << endl;
  cout << phcp1->get_phiz() << endl;
  cout << phcp1->get_dphiz() << endl;
  cout << phcp1->get_stereo() << endl;
  assert( phcp1->get_surface() == scy1 );
  assert( phcp1->get_phiz() == phiz1 );
  assert( phcp1->get_dphiz() == dphiz1 );
  assert( phcp1->get_stereo() == stereo );

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

  cout << ok_prefix << "Generate a hit." << endl;
  TrackVector vec;
  TrackError err;
  HitDerivative der_expect(1);
  der_expect(0,0) = 1.0;
  der_expect(0,1) = stereo;
  vec(0) = 1.1;
  vec(1) = 40.0;
  err(0,0) = 0.04;
  ETrack tre1( SurfacePtr(scy1.new_pure_surface()), vec, err );
  ClusterPtr cluptr1(phcp1);
  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() == 1);
  cout << pre11.measured_vector() << endl;
  assert( is_equal(pre11.measured_vector()(0),phiz1) );
  cout << pre11.measured_error() << endl;
  assert( is_equal( pre11.measured_error()(0,0), dphiz1*dphiz1 ) );
  cout << pre11.predicted_vector() << endl;
  assert( is_equal( pre11.predicted_vector()(0), calc_phiz(vec) ) );
  cout << pre11.predicted_error() << endl;
  assert( is_equal( pre11.predicted_error()(0,0), calc_ephiz(err) ) );
  cout << pre11.dhit_dtrack() << endl;
  assert( is_equal( pre11.dhit_dtrack(), der_expect ) );
  cout << pre11.difference_vector() << endl;
  assert( fabs(pre11.difference_vector()(0) - 
               calc_phiz(vec) + phiz1) < maxdiff );

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

  cout << ok_prefix << "Generate hit for a different track."
       << endl;
  vec(0) = 1.2;
  ETrack tre2( SurfacePtr(scy1.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() == 1);
  cout << pre12.measured_vector() << endl;
  assert( is_equal( pre12.measured_vector()(0), phiz1 ) );
  cout << pre12.measured_error() << endl;
  assert( is_equal( pre12.measured_error()(0,0), dphiz1*dphiz1 ) );
  cout << pre12.predicted_vector() << endl;
  assert( is_equal( pre12.predicted_vector()(0), calc_phiz(vec) ) );
  cout << pre12.predicted_error() << endl;
  assert( is_equal( pre12.predicted_error()(0,0), calc_ephiz(err) ) );
  cout << pre12.dhit_dtrack() << endl;
  assert( is_equal( pre12.dhit_dtrack(), der_expect ) );
  cout << pre12.difference_vector() << endl;
  assert( fabs(pre12.difference_vector()(0) - 
          calc_phiz(vec) + phiz1) < 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;
  ClusterPtr cluptr2(phcp2);
  HitList tclus22 = phcp2->predict(tre2);
  assert( tclus22.size() == 1 );
  Hit& pre22 = *tclus22.front();
  cout << pre22.size() << endl;
  assert( pre22.size() == 1 );
  cout << pre22.measured_vector() << endl;
  assert( is_equal( pre22.measured_vector()(0), phiz2 ) );
  cout << pre22.measured_error() << endl;
  assert( is_equal( pre22.measured_error()(0,0), dphiz2*dphiz2 ) );
  cout << pre22.predicted_vector() << endl;
  assert( is_equal( pre22.predicted_vector()(0), calc_phiz(vec) ) );
  cout << pre22.predicted_error() << endl;
  assert( is_equal( pre22.predicted_error()(0,0), calc_ephiz(err) ) );
  cout << pre22.dhit_dtrack() << endl;
  assert( is_equal( pre22.dhit_dtrack(), der_expect ) );
  cout << pre22.difference_vector() << endl;
  assert( fabs(pre22.difference_vector()(0) - 
               calc_phiz(vec) + phiz2) < 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() == 1);
  cout << pre11.measured_vector() << endl;
  assert( is_equal( pre11.measured_vector()(0), phiz1 ) );
  cout << pre11.measured_error() << endl;
  assert( is_equal( pre11.measured_error()(0,0), dphiz1*dphiz1 ) );
  cout << pre11.predicted_vector() << endl;
  assert( is_equal( pre11.predicted_vector()(0), calc_phiz(vec) ) );
  cout << pre11.predicted_error() << endl;
  assert( is_equal( pre11.predicted_error()(0,0), calc_ephiz(err) ) );
  cout << pre11.dhit_dtrack() << endl;
  assert( is_equal( pre11.dhit_dtrack(), der_expect ) );
  cout << pre11.difference_vector() << endl;
  assert( fabs(pre11.difference_vector()(0) - 
               calc_phiz(vec) + phiz1) < maxdiff );

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

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

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

  cout << ok_prefix << "Check MC ID's." << endl;
  assert( phcp1->get_mc_ids().size() == 0 );
  McIdList ids;
  ids.push_back(1);
  ids.push_back(22);
  ids.push_back(333);
  ClusCylPhiZ* phcp3( new ClusCylPhiZ(r2,phiz2,dphiz2,stereo,ids) );
  ClusterPtr pclu3(phcp3);
  {
    const McIdList& oids = pclu3->get_mc_ids();
    assert( oids.size() == 3 );
    assert( oids[0] == 1 );
    assert( oids[1] == 22 );
    assert( oids[2] == 333 );
  }
  {
    HitList thits31 = pclu3->predict(tre1);
    assert( thits31.size() == 1 );
    Hit& hit = *thits31.front();
    const McIdList& oids = hit.get_mc_ids();
    assert( oids.size() == 3 );
    assert( oids[0] == 1 );
    assert( oids[1] == 22 );
    assert( oids[2] == 333 );
  }
  {
    ClusterPtr pclu4 = new ClusCylPhiZ(*phcp3);
    const McIdList& oids = pclu4->get_mc_ids();
    assert( oids.size() == 3 );
    assert( oids[0] == 1 );
    assert( oids[1] == 22 );
    assert( oids[2] == 333 );
  }

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

  cout << ok_prefix << "Write object data." << endl;
  McIdList mcids;
  mcids.push_back(2);
  mcids.push_back(4);
  mcids.push_back(8);
  {
    ObjPtr pobj( new ClusCylPhiZ(12.3, 4.5, 1.2, 1.23, mcids) );
    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( "ClusCylPhiZ ",pos)) != string::npos );
    assert( (pos=mystream.str().find( "radius",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( "4.5 ",pos)) != string::npos );
    assert( (pos=mystream.str().find( "dphi",pos)) != string::npos );
    assert( (pos=mystream.str().find( "stereo",pos)) != string::npos );
    assert( (pos=mystream.str().find( "1.23 ",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 ClusCylPhiZ radius=24.4 phiz=2.8 dphiz=1.1";
    istring += " stereo=2.46";
#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 ClusCylPhiZ* pobj;
      ObjTable::get_object(name,pobj);
      assert( pobj != 0 );
      assert( pobj->get_type() == ClusCylPhiZ::get_static_type() );
      assert( pobj->get_radius() == 24.4 );
      assert( pobj->get_phiz() == 2.8 );
      assert( pobj->get_dphiz() == 1.1 );
      assert( pobj->get_stereo() == 2.46 );
#ifdef ObjData_supports_lists
      assert( pobj->get_mc_ids() == mcids );
#endif
    }
  }


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

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

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

}