/***************************************************************************
 *
 * Project:  OpenCPN
 * Purpose:  NMEA0183 Support Classes
 * Author:   Samuel R. Blackburn, David S. Register
 *
 ***************************************************************************
 *   Copyright (C) 2010 by Samuel R. Blackburn, David S Register           *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,  USA.             *
 ***************************************************************************
 *
 *   S Blackburn's original source license:                                *
 *         "You can use it any way you like."                              *
 *   More recent (2010) license statement:                                 *
 *         "It is BSD license, do with it what you will"                   *
 */

#include "nmea0183.h"

/*
** Author: Samuel R. Blackburn
** CI$: 76300,326
** Internet: sammy@sed.csc.com
**
** You can use it any way you like.
*/

LATITUDE::LATITUDE() { Empty(); }

LATITUDE::~LATITUDE() { Empty(); }

void LATITUDE::Empty(void) {
  Latitude = 0.0;
  Northing = NS_Unknown;
}

bool LATITUDE::IsDataValid(void) {
  if (Northing != North && Northing != South) {
    return (FALSE);
  }

  return (TRUE);
}

void LATITUDE::Parse(int position_field_number, int north_or_south_field_number,
                     const SENTENCE& sentence) {
  wxString n_or_s = sentence.Field(north_or_south_field_number);
  Set(sentence.Double(position_field_number), n_or_s);
}

void LATITUDE::Set(double position, const wxString& north_or_south) {
  //   assert( north_or_south != NULL );

  Latitude = position;
  wxString ts = north_or_south;

  if (!ts.IsEmpty() && ts.Trim(false)[0] == _T('N')) {
    Northing = North;
  } else if (!ts.IsEmpty() && ts.Trim(false)[0] == _T('S')) {
    Northing = South;
  } else {
    Northing = NS_Unknown;
  }
}

void LATITUDE::Write(SENTENCE& sentence) {
  wxString temp_string;
  int neg = 0;
  int d;
  int m;

  if (Latitude < 0.0) {
    Latitude = -Latitude;
    neg = 1;
  }
  d = (int)Latitude;
  m = (int)((Latitude - (double)d) * 60000.0);

  if (neg) d = -d;

  temp_string.Printf(_T("%d%02d.%03d"), d, m / 1000, m % 1000);

  sentence += temp_string;

  if (Northing == North) {
    sentence += _T("N");
  } else if (Northing == South) {
    sentence += _T("S");
  } else {
    /*
    ** Add Nothing
    */
  }
}

const LATITUDE& LATITUDE::operator=(const LATITUDE& source) {
  Latitude = source.Latitude;
  Northing = source.Northing;

  return (*this);
}
