#include "result.hh"
#include "request.hh"
#include "area.hh"
#include "stock.hh"

#include <sstream>

using namespace std ;



/* *** Constructors *** */


Result::Result(const Request *_request,
               const std::string &_algorithm,
               const Point3D &_position,
               const Point3D &real_position):
  request(_request), algorithm(_algorithm), position(_position)
{
  compute_error(real_position) ;
}



/* *** Read accessors *** */


string Result::in_which_area() const
{
  const Area *area = Stock::in_which_area_is(position) ;
  if (area == NULL)
    return "" ;

  return area->get_name() ;
}



/* *** Write accessors *** */


void Result::compute_error(const Point3D &real_position)
{
  error = position.distance(real_position) ;
}



/* *** Operators *** */


const Result& Result::operator=(const Result &source)
{
  if (this == &source)
    return *this ;

  request = source.request ;
  algorithm = source.algorithm ;
  position = source.position ;
  error = source.error ;

  return *this ;
}


bool Result::operator==(const Result &source) const
{
  return
    request == source.request &&
    algorithm == source.algorithm &&
    position == source.position &&
    error == source.error ;
}



/**
 * @return The result as a CSV string, \em without trailing '\n'.
 */
const string Result::to_csv() const
{
  ostringstream csv_line ;

  csv_line
      << algorithm
      << ';' << position.get_x()
      << ';' << position.get_y()
      << ';' << position.get_z()
      << ';' << "Error"
      << ';' << error ;

  return csv_line.str() ;
}



std::ostream& operator<<(ostream &os, const Result &r)
{
  os
      << "The result of the algorithm " << r.algorithm
      << " is: " << r.position ;
  if (r.error >= 0)
    os << ", error = " << r.error << " m" ;
  return os ;
}