#include "inputlogcsv.hh"
#include "posexcept.hh"
#include "mobile.hh"
#include "calibrationrequest.hh"
#include "referencepoint.hh"

#include <sstream>

using namespace std ;
using std::tr1::unordered_map ;



/* *** Constructors *** */


/**
 * Prepares the InputLogCSV to write to a CSV file.
 * @param filename The name of the file to open.
 * @throw error_opening_input_file if the file cannot be opened.
 */
InputLogCSV::InputLogCSV(const string &filename):
  log_file_name(filename)
{
  log_file.open(log_file_name.c_str()) ;
  if (! log_file)
    throw error_opening_input_file(log_file_name) ;
}


InputLogCSV::~InputLogCSV()
{
  log_file.close() ;
}



/* *** Operations *** */


/**
 * @return true if the request has been logged successfuly, or false
 * if not.
 */
bool InputLogCSV::log_request(const Request &request)
{
  if (! log_file)
    return false ;

  log_file << request_to_csv(request).c_str() ;
  return true ;
}


const string InputLogCSV::request_to_csv(const Request &request) const
{
  ostringstream csv_line ;
  if (request.get_mobile() != NULL)
    csv_line << request.get_mobile()->get_mac_addr() ;
  csv_line << ';' << request.get_timestamp() << ';' ;

  const CalibrationRequest *calibration_request =
    dynamic_cast<const CalibrationRequest*>(&request) ;
  if (calibration_request == NULL)
    csv_line << "0;0;0;0" ;
  else
    {
      csv_line
          << calibration_request->get_reference_point()->get_x() << ';'
          << calibration_request->get_reference_point()->get_y() << ';'
          << calibration_request->get_reference_point()->get_z() << ';'
          << static_cast<int>(calibration_request->get_direction()) ;
    }

  const unordered_map<string, Measurement> &measurements =
    request.get_measurements() ;
  for (unordered_map<string, Measurement>::const_iterator i
       = measurements.begin() ; i != measurements.end() ; ++i)
    {
      const vector<int> &ss_list = i->second.get_ss_list() ;
      const string &ap_mac = i->second.get_ap() != NULL
                             ? i->second.get_ap()->get_mac_addr()
                             : "" ;
      for (vector<int>::const_iterator i = ss_list.begin() ;
           i != ss_list.end() ; ++i)
        {
          csv_line << ';' << ap_mac ;
          csv_line << ';' << *i ;
        }
    }

  csv_line << '\n' ;
  return csv_line.str() ;
}