#include "topologyreadercsv.hh"
#include "posexcept.hh"
#include "stock.hh"
#include "point3d.hh"
#include "area.hh"

using namespace std ;



/* *** Constructors *** */


TopologyReaderCSV::TopologyReaderCSV(const string &filename):
  file(filename)
{
  read_topology() ;
}



/* *** Operations *** */


void TopologyReaderCSV::read_topology()
{
  while (file.next_line())
    process_line() ;
}


void TopologyReaderCSV::process_line()
{
  string building_name ;
  if (! file.read_field(building_name))
    throw malformed_topology("Cannot read building name!") ;
  Building &building = const_cast<Building&>(
                         Stock::find_create_building(building_name)) ;

  string name ;
  if (! file.read_field(name))
    throw malformed_topology("Cannot read area name!") ;

  Point3D p_min(read_point()) ;
  Point3D p_max(read_point()) ;

  Area *area = new Area(&building, name, p_min, p_max) ;
  building.add_area(area) ;
}


Point3D TopologyReaderCSV::read_point()
{
  float coord[3] ;
  for (unsigned int i = 0 ; i < 3 ; ++i)
    if (! file.read_field(coord[i]))
      throw malformed_topology("Cannot read a whole Point3D!") ;

  return Point3D(coord) ;
}