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/***************************************************************************
 *   Copyright (C) November 28, 2008 by Mattias Runge                             *
 *   mattias@runge.se                                                      *
 *   canmessage.cpp                                            *
 *                                                                         *
 *   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.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

#include <string>
#include <iostream>
#include "canidtranslator.h"
#include "canmessage.h"

void CanMessage::setRaw(string rawHex)
{
    CanIdTranslator &translator = CanIdTranslator::getInstance();
    //SyslogStream &slog = SyslogStream::getInstance();

    //PKT 00060102 1 0 00 00 c4

    rawHex = trim(rawHex, '\n');
    rawHex = trim(rawHex);

    vector<string> parts = explode(" ", rawHex);

    if (parts.size() < 2 || parts[0].compare("PKT") != 0)
    {
        //slog << "Malformed can message received from canDaemon: \"" << rawHex << "\"\n";
        throw new CanMessageException("Malformed can message received from canDaemon");
    }

    string rawHeaderBin = hex2bin(parts[1]);

    myClassName = translator.lookupClassName(bin2uint(rawHeaderBin.substr(3, 4)));

    if (myClassName == "")
    {
        myIsUnknown = true;
        return;
    }

    string rawHexData = "";
    for (int n = 4; n < parts.size(); n++)
    {
        rawHexData += parts[n];
    }

    if (myClassName == "nmt")
    {
        int commandId = bin2uint(rawHeaderBin.substr(8, 8));
        myCommandName = translator.lookupNMTCommandName(commandId);
        
        myData = translator.translateNMTData(commandId, rawHexData);
    }
    else
    {
        myDirectionFlag = translator.lookupDirectionFlag(bin2uint(rawHeaderBin.substr(7, 1)));
        myModuleName = translator.lookupModuleName(bin2uint(rawHeaderBin.substr(8, 8)));

        myModuleId = bin2uint(rawHeaderBin.substr(16, 8));

        int commandId = bin2uint(rawHeaderBin.substr(24, 8));
        myCommandName = translator.lookupCommandName(commandId, myModuleName);

        myData = translator.translateData(commandId, myModuleName, rawHexData);
    }
}

string CanMessage::getRaw()
{
    CanIdTranslator &translator = CanIdTranslator::getInstance();

    string dataHex;

    string rawHex = "PKT ";

    string bin = "000";

    int classId = translator.resolveClassId(myClassName);
    if (classId == -1)
        bin += "0000";
    else
        bin += uint2bin(classId, 4);

    if (myClassName == "nmt")
    {
        bin +="0";

        int commandNameId = translator.resolveNMTCommandId(myCommandName);
        if (commandNameId == -1)
            bin += "00000000";
        else
            bin += uint2bin(commandNameId, 8);

        bin += "0000000000000000";

        dataHex = translator.translateNMTDataToHex(commandNameId, myData);
    }
    else
    {
        bin += uint2bin(translator.resolveDirectionFlag(myDirectionFlag), 1);


        int moduleTypeId = translator.resolveModuleId(myModuleName);
        if (moduleTypeId == -1)
            bin += "00000000";
        else
            bin += uint2bin(moduleTypeId, 8);


        int moduleId = myModuleId;
        bin += uint2bin(moduleId, 8);


        int commandNameId = translator.resolveCommandId(myCommandName, myModuleName);
        if (commandNameId == -1)
            bin += "00000000";
        else
            bin += uint2bin(commandNameId, 8);

        dataHex = translator.translateDataToHex(commandNameId, myModuleName, myData);
    }

    rawHex += bin2hex(bin);

    rawHex += " 1 0";

    while (dataHex.size() > 0)
    {
        string hex = dataHex.substr(0, 2);
        dataHex.erase(0, 2);
        rawHex += " " + hex;
    }

    rawHex += "\n";

    return rawHex;
}

void CanMessage::setData(map<string, CanVariable> data)
{
    myData = data;

    CanIdTranslator &translator = CanIdTranslator::getInstance();

    int commandNameId = translator.resolveNMTCommandId(myCommandName);

    if (myClassName == "nmt")
    {
        translator.makeNMTDataValid(commandNameId, data);
    }
    else
    {
        translator.makeDataValid(commandNameId, myModuleName, data);
    }
}

string CanMessage::getJSONData()
{
    string json = "{";

    map<string, CanVariable>::iterator iter;

    for (iter = myData.begin(); iter != myData.end(); iter++)
    {
        json += " " + iter->first + " : ";

        if (iter->second.getType() == "uint")
        {
            json += iter->second.getValue();
        }
        else if (iter->second.getType() == "float")
        {
            json += iter->second.getValue();
        }
        else if (iter->second.getType() == "ascii" || iter->second.getType() == "hexstring")
        {
            json += "'" + escape(iter->second.getValue()) + "'";
        }

        json += ",";
    }

    json = trim(json, ',');

    return json + " }";
}