#include "inputdatareader.hh"
#include "accesspointsreadercsv.hh"
#include "topologyreadercsv.hh"
#include "inputcsv.hh"
#include "calibrationrequest.hh"
#include "configuration.hh"
#include "posexcept.hh"
#include "stock.hh"

#include <iostream>

using namespace std ;



/* *** Constructors *** */


InputDataReader::InputDataReader()
{
  read_access_points() ;
  read_topology() ;
  read_reference_points() ;
}


InputDataReader::~InputDataReader()
{
  for (vector<InputMedium*>::const_iterator i =
         reference_points_media.begin() ;
       i != reference_points_media.end() ; ++i)
    delete *i ;
  reference_points_media.clear() ;
}



/* *** Access points *** */


void InputDataReader::read_access_points()
{
  if (! Configuration::is_configured("data-input.ap-medium"))
    return ;

  initialise_access_points_media() ;
}


void InputDataReader::initialise_access_points_media()
{
  const vector<string> &media_names =
    Configuration::string_vector_value("data-input.ap-medium") ;

  for (vector<string>::const_iterator i = media_names.begin() ;
       i != media_names.end() ; ++i)
    {
      if (*i == "CSV")
        initialise_access_points_csv() ;

      else
        throw bad_configuration(
          "Access points input medium type unknown « "+ *i +" »") ;
    }
}


void InputDataReader::initialise_access_points_csv()
{
  if (! Configuration::is_configured("data-input.ap-csv-file"))
    throw missing_configuration(
      "No input CSV file specified for access points") ;

  AccessPointsReaderCSV(
    Configuration::string_value("data-input.ap-csv-file")) ;
}



/* *** Topology *** */


void InputDataReader::read_topology()
{
  if (! Configuration::is_configured("data-input.topology-medium"))
    return ;

  initialise_topology_media() ;
}


void InputDataReader::initialise_topology_media()
{
  const vector<string> &media_names =
    Configuration::string_vector_value("data-input.topology-medium") ;

  for (vector<string>::const_iterator i = media_names.begin() ;
       i != media_names.end() ; ++i)
    {
      if (*i == "CSV")
        initialise_topology_csv() ;

      else
        throw bad_configuration(
          "Topology input medium type unknown « "+ *i +" »") ;
    }
}


void InputDataReader::initialise_topology_csv()
{
  if (! Configuration::is_configured("data-input.areas-csv-file"))
    throw missing_configuration(
      "No topology input CSV file specified for areas") ;

  if (! Configuration::is_configured("data-input.waypoints-csv-file"))
    throw missing_configuration(
      "No topology input CSV file specified for waypoints") ;

  TopologyReaderCSV(
    Configuration::string_value("data-input.areas-csv-file"),
    Configuration::string_value("data-input.waypoints-csv-file")) ;
}



/* *** Reference points *** */


void InputDataReader::read_reference_points()
{
  if (! Configuration::is_configured("data-input.reference-points-medium"))
    return ;

  initialise_reference_points_media() ;
  read_from_reference_points_media() ;
}


void InputDataReader::initialise_reference_points_media()
{
  const vector<string> &media_names =
    Configuration::string_vector_value("data-input.reference-points-medium") ;

  for (vector<string>::const_iterator i = media_names.begin() ;
       i != media_names.end() ; ++i)
    {
      if (*i == "CSV")
        initialise_reference_points_csv() ;

      else
        throw bad_configuration(
          "Reference points input medium type unknown « "+ *i +" »") ;
    }
}


void InputDataReader::initialise_reference_points_csv()
{
  if (! Configuration::is_configured("data-input.reference-points-csv-file"))
    throw missing_configuration(
      "No reference points input CSV file is configured") ;

  reference_points_media.push_back(
    new InputCSV(
      Configuration::string_value("data-input.reference-points-csv-file"))) ;
}


void InputDataReader::read_from_reference_points_media()
{
  for (vector<InputMedium*>::const_iterator i =
         reference_points_media.begin() ;
       i != reference_points_media.end() ; ++i)
    {
      while (! (*i)->eof())
        {
          Request &request =
            const_cast<Request&>((*i)->get_next_request()) ;
          if (! request)
            continue ;
          CalibrationRequest *calibration_request =
            dynamic_cast<CalibrationRequest*>(&request) ;

          if (calibration_request == NULL)
            cerr << "Warning! Invalid calibration request at line "
                 << (*i)->get_current_line_nb() << endl ;
          else
            stock_calibration_request(*calibration_request) ;
        }
    }
}


void InputDataReader::
stock_calibration_request(const CalibrationRequest &request) const
{
  const CalibrationRequest &calibration_request =
    Stock::find_create_calibration_request(request) ;

  calibration_request.reference_point_backward_link() ;
}