/*
 *  Copyright (c) 2013 Croatia Control Ltd. (www.crocontrol.hr)
 *
 *  This file is part of Asterix.
 *
 *  Asterix 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 3 of the License, or
 *  (at your option) any later version.
 *
 *  Asterix 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 Asterix.  If not, see <http://www.gnu.org/licenses/>.
 *
 *
 * AUTHORS: Damir Salantic, Croatia Control Ltd.
 *
 */

#include "DataItemFormatExplicit.h"
#include "Tracer.h"
#include "asterixformat.hxx"

DataItemFormatExplicit::DataItemFormatExplicit(int id)
: DataItemFormat(id)
{
}

DataItemFormatExplicit::DataItemFormatExplicit(const DataItemFormatExplicit& obj)
: DataItemFormat(obj.m_nID)
{
	std::list<DataItemFormat*>::iterator it = ((DataItemFormat&)obj).m_lSubItems.begin();

	while(it != obj.m_lSubItems.end())
	{
		DataItemFormat* di = (DataItemFormat*)(*it);
		m_lSubItems.push_back(di->clone());
		it++;
	}

	m_pParentFormat = obj.m_pParentFormat;
}

DataItemFormatExplicit::~DataItemFormatExplicit()
{
}

long DataItemFormatExplicit::getLength(const unsigned char* pData)
{
	return (long)(*pData);
}

bool DataItemFormatExplicit::getText(std::string& strResult, std::string& strHeader, const unsigned int formatType, unsigned char* pData, long nLength)
{
	std::list<DataItemFormat*>::iterator it;
	int bodyLength = 0;
	bool ret = false;

	pData++; // skip explicit length byte (it is already in nLength)

	// calculate the size of all sub items
	for ( it=m_lSubItems.begin() ; it != m_lSubItems.end(); it++ )
	{
		DataItemFormat* di = (DataItemFormat*)(*it);
		bodyLength += di->getLength(pData+bodyLength); // calculate length of body
	}

	int nFullLength = nLength - 1; // calculate full length

	// full length must be multiple of body length
	if (bodyLength == 0 || nFullLength % bodyLength != 0)
	{
		Tracer::Error("Wrong data length in Explicit. Needed=%d and there is %d bytes.", bodyLength, nFullLength);
	}

	std::string tmpStr = "";

	switch(formatType)
	{
	case CAsterixFormat::EJSON:
	case CAsterixFormat::EJSONH:
	{
		tmpStr += format("[");
	}
	}

	for (int i=0; i<nFullLength; i+=bodyLength)
	{
		for ( it=m_lSubItems.begin() ; it != m_lSubItems.end(); it++ )
		{
			DataItemFormat* di = (DataItemFormat*)(*it);
			ret |= di->getText(tmpStr, strHeader, formatType, pData, bodyLength);
			pData += bodyLength;

			switch(formatType)
			{
			case CAsterixFormat::EJSON:
			case CAsterixFormat::EJSONH:
			{
				tmpStr += format(",");
			}
			}
		}
	}

	switch(formatType)
	{
	case CAsterixFormat::EJSON:
	case CAsterixFormat::EJSONH:
	{
		if (tmpStr[tmpStr.length()-1] == ',')
		{
			tmpStr[tmpStr.length()-1] = ']';
		}
		else
		{
			tmpStr += ']';
		}
	}
	}

	strResult += tmpStr;

	return ret;
}

std::string DataItemFormatExplicit::printDescriptors(std::string header)
{
	std::string strDef = "";

	std::list<DataItemFormat*>::iterator it;
	for ( it=m_lSubItems.begin(); it != m_lSubItems.end(); it++ )
	{
		DataItemFormat* dip = (DataItemFormat*)(*it);
		strDef += dip->printDescriptors(header);
	}
	return strDef;
}

bool DataItemFormatExplicit::filterOutItem(const char* name)
{
	std::list<DataItemFormat*>::iterator it;
	for ( it=m_lSubItems.begin(); it != m_lSubItems.end(); it++ )
	{
		DataItemFormat* dip = (DataItemFormat*)(*it);
		if (true == dip->filterOutItem(name))
			return true;
	}
	return false;
}

bool DataItemFormatExplicit::isFiltered(const char* name)
{
	std::list<DataItemFormat*>::iterator it;
	for ( it=m_lSubItems.begin(); it != m_lSubItems.end(); it++ )
	{
		DataItemFormat* dip = (DataItemFormat*)(*it);
		if (true == dip->isFiltered(name))
			return true;
	}
	return false;
}

const char* DataItemFormatExplicit::getDescription(const char* field, const char* value = NULL )
{
  std::list<DataItemFormat*>::iterator it;
  for ( it=m_lSubItems.begin() ; it != m_lSubItems.end(); it++ )
  {
    DataItemBits* bv = (DataItemBits*)(*it);
    const char* desc = bv->getDescription(field, value);
    if (desc != NULL)
        return desc;
  }
  return NULL;
}

#if defined(WIRESHARK_WRAPPER) || defined(ETHEREAL_WRAPPER)
fulliautomatix_definitions* DataItemFormatExplicit::getWiresharkDefinitions()
{
	DataItemFormatFixed* pFixed = m_lSubItems.size() ? (DataItemFormatFixed*)m_lSubItems.front() : NULL;
	if (pFixed == NULL)
	{
		Tracer::Error("Wrong format of explicit item");
		return NULL;
	}
	return pFixed->getWiresharkDefinitions();
}

fulliautomatix_data* DataItemFormatExplicit::getData(unsigned char* pData, long, int byteoffset)
{
	fulliautomatix_data *lastData = NULL, *firstData = NULL;
	DataItemFormatFixed* pFixed = m_lSubItems.size() ? (DataItemFormatFixed*)m_lSubItems.front() : NULL;
	if (pFixed == NULL)
	{
		Tracer::Error("Wrong format of explicit item");
		return NULL;
	}

	// TODO : fix this as it is in DataItemFormatExplicit::getText
	int fixedLength = pFixed->getLength(pData);
	unsigned char nFullLength = *pData;

	firstData = lastData = newDataUL(NULL, PID_LEN, byteoffset, 1, nFullLength);
	byteoffset+=1;

	pData++;

	lastData->next = pFixed->getData(pData, fixedLength, byteoffset);
	while(lastData->next)
		lastData = lastData->next;

	byteoffset += nFullLength;

	return firstData;
}
#endif

#if defined(PYTHON_WRAPPER)

PyObject* DataItemFormatExplicit::getObject(unsigned char* pData, long nLength, int verbose)
{
	PyObject* p = PyDict_New();
	insertToDict(p, pData, nLength, verbose);
	return p;
}

void DataItemFormatExplicit::insertToDict(PyObject* p, unsigned char* pData, long nLength, int verbose)
{
  DataItemFormatFixed* pFixed = m_lSubItems.size() ? (DataItemFormatFixed*)m_lSubItems.front() : NULL;
  if (pFixed == NULL)
  {
    //TODO Tracer::Error("Wrong format of explicit item");
    return;
  }

  int fixedLength = pFixed->getLength(pData);
  //unsigned char nFullLength = *pData;
  pData++;

  pFixed->insertToDict(p, pData, fixedLength, verbose);
}
#endif
