/***************************************************************************
 *
 * Project:  OpenCPN
 * Purpose:  NMEA0183 Support Classes
 * Author:   Thomas Rauch
 *
 ***************************************************************************
 *   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"

// IMPLEMENT_DYNAMIC( XDR, RESPONSE )

XDR::XDR() {
  Mnemonic = _T("XDR");
  Empty();
}

XDR::~XDR() {
  Mnemonic.Empty();
  Empty();
}

void XDR::Empty(void) {
  //   ASSERT_VALID( this );
  TransducerCnt = 0;
  for (int idx = 0; idx < MaxTransducerCnt; idx++) {
    TransducerInfo[idx].TransducerType.Empty();
    TransducerInfo[idx].MeasurementData = 0.0;
    TransducerInfo[idx].UnitOfMeasurement.Empty();
    TransducerInfo[idx].TransducerName.Empty();
  }
}

bool XDR::Parse(const SENTENCE& sentence) {
  //   ASSERT_VALID( this );

  /*
  ** XDR - Transducer Measurement
  **
  **        1 2   3 4            n
  **        | |   | |            |
  ** $--XDR,a,x.x,a,c--c, ..... *hh<CR><LF>
  **
  ** Field Number:
  **  1) Transducer Type
  **  2) Measurement Data
  **  3) Unit of Measurement, Celcius
  **  4) Name of transducer
  **  ...
  **  n) Checksum
  ** There may be any number of quadruplets like this, each describing a sensor.
  *The last field will be a checksum as usual.
  */

  /*
  ** First we check the checksum...
  */
  int cksumFieldNr = 0;
  TransducerCnt = 0;
  TransducerCnt = (int)sentence.GetNumberOfDataFields() / 4;
  cksumFieldNr = sentence.GetNumberOfDataFields() + 1;
  if (TransducerCnt == 0 || TransducerCnt > MaxTransducerCnt) {
    SetErrorMessage(_T("Invalid Field count" ));
    return (FALSE);
  }

  if (sentence.IsChecksumBad(cksumFieldNr) == NTrue) {
    SetErrorMessage(_T("Invalid Checksum" ));
    return (FALSE);
  }
  for (int idx = 0; idx < TransducerCnt; idx++) {
    TransducerInfo[idx].TransducerType = sentence.Field(idx * 4 + 1);
    TransducerInfo[idx].MeasurementData = sentence.Double(idx * 4 + 2);
    TransducerInfo[idx].UnitOfMeasurement = sentence.Field(idx * 4 + 3);
    TransducerInfo[idx].TransducerName = sentence.Field(idx * 4 + 4);
  }

  return (TRUE);
}

bool XDR::Write(SENTENCE& sentence) {
  //   ASSERT_VALID( this );

  /*
  ** Let the parent do its thing
  */

  RESPONSE::Write(sentence);

  sentence += TransducerCnt;
  for (int idx = 0; idx < TransducerCnt; idx++) {
    sentence += TransducerInfo[idx].TransducerType;
    sentence += TransducerInfo[idx].MeasurementData;
    sentence += TransducerInfo[idx].UnitOfMeasurement;
    sentence += TransducerInfo[idx].TransducerName;
    // sentence.Finish();
  }

  sentence.Finish();

  return (TRUE);
}

const XDR& XDR::operator=(const XDR& source) {
  //   ASSERT_VALID( this );

  TransducerCnt = source.TransducerCnt;
  for (int idx = 0; idx < TransducerCnt; idx++) {
    TransducerInfo[idx].TransducerType =
        source.TransducerInfo[idx].TransducerType;
    TransducerInfo[idx].MeasurementData =
        source.TransducerInfo[idx].MeasurementData;
    TransducerInfo[idx].UnitOfMeasurement =
        source.TransducerInfo[idx].UnitOfMeasurement;
    TransducerInfo[idx].TransducerName =
        source.TransducerInfo[idx].TransducerName;
  }

  return (*this);
}
