/**
 * FileWriterCDF.cc
 *
 *  Created on: 08 oct. 2014
 *      Author: AKKA
 */

#include "FileWriterCDF.hh"
#include "TimeUtil.hh"

#include "FileWriter.hh"
#include "ParamMgr.hh"
#include "DataSetMgr.hh"
#include "InstrumentMgr.hh"
#include "MissionMgr.hh"

#include <sstream>
#include <cstring>
#include <stdlib.h>
#include <boost/cast.hpp>

namespace AMDA {
namespace ParamOutputImpl {
namespace Download {
namespace FileWriter {

#define CDF_TIME_VAR "AMDA_TIME"

using namespace AMDA::Info;

FileWriterCDF::FileWriterCDF(AMDA::Parameters::ParameterManager& pParameterManager) :
		FileWriter(pParameterManager),
		_cdfid(NULL)
{
}

FileWriterCDF::~FileWriterCDF(void)
{
}

std::string FileWriterCDF::getExtension(void)
{
	return "cdf";
}

void FileWriterCDF::closeFile(void)
{
	boost::mutex::scoped_lock scoped_lock(ParameterManager::mutexCDFLib);
	if (_cdfid != NULL)
		CDFcloseCDF(_cdfid);
	_cdfid = NULL;
}

bool FileWriterCDF::createNewFile(std::string filePath)
{
	boost::mutex::scoped_lock scoped_lock(ParameterManager::mutexCDFLib);
	CDFstatus status;

	if (_cdfid != NULL)
	{
		status = CDFcloseCDF(_cdfid);
		if (status != CDF_OK)
			return false;
		_cdfid = NULL;
		_cdfVarMap.clear();
	}

	//remove old file if exist
	remove(filePath.c_str());

	//CDFcreateCDF add automatically ".cdf" extension
	status = CDFcreateCDF((char*)filePath.c_str(),&_cdfid);

	return (status == CDF_OK);
}

bool FileWriterCDF::addParameter(ParamProperties* paramProp, AMDA::Common::ParameterIndexComponentList &indexList,
		FileDataType type, bool isFirstParam, int dim1Size, int dim2Size)
{
	if (isFirstParam)
	{
		if (!createCDFVar(CDF_TIME_VAR, DT_TIME, 1, 1, _cdfVarMap[CDF_TIME_VAR]))
			return false;
	}

	return addCDFParameter(paramProp->getOutputId(), indexList, type, dim1Size, dim2Size);
}

bool FileWriterCDF::addCDFParameter(std::string outputId, AMDA::Common::ParameterIndexComponentList &indexList,
		FileDataType type, int dim1Size, int dim2Size)
{
	std::stringstream paramIdStream;
	paramIdStream << outputId;
	int varDim1Size = dim1Size;
	int varDim2Size = dim2Size;
	if ((type != DT_TIME) && !indexList.empty() && (dim1Size*dim2Size != (int)indexList.size()))
	{
		paramIdStream << "_" << indexList.size();
		varDim1Size = indexList.size();
		varDim2Size = 1;
	}

	std::map<std::string,ParamCDFVar>::iterator it = _cdfVarMap.find(outputId);
	if (it != _cdfVarMap.end())
		return true; //already exist

	return createCDFVar(paramIdStream.str().c_str(), type,
			varDim1Size, varDim2Size, _cdfVarMap[outputId]);
}

bool FileWriterCDF::createCDFVar(const char *name, FileDataType type, long varDim1Size, long varDim2Size,
		ParamCDFVar& cdfVar)
{
	boost::mutex::scoped_lock scoped_lock(ParameterManager::mutexCDFLib);
	if (_cdfid == NULL)
		return false;

	cdfVar.dim1Size = varDim1Size;
	cdfVar.dim2Size = varDim2Size;

	switch (type)
	{
	case DT_FLOAT       :
		cdfVar.type = CDF_FLOAT;
		break;
	case DT_SHORT       :
		cdfVar.type = CDF_INT2;
		break;
	case DT_INT         :
		cdfVar.type = CDF_INT4;
		break;
	case DT_DOUBLE      :
	case DT_LONGDOUBLE  :
		cdfVar.type = CDF_DOUBLE;
		break;
	case DT_LOGICAL :
		cdfVar.type = CDF_UINT2;
		break;
	case DT_TIME :
		cdfVar.type = CDF_EPOCH;
		break;
	case DT_NONE :
		cdfVar.type = CDF_CHAR;
		break;
	default:
		return false;
	}

	cdfVar.recNum = 0;

	long numDims;
	long* dimSizes = NULL;
	long* dimVarys = NULL;

	if (varDim2Size > 1)
	{
		numDims  = 2L;
		dimSizes = new long[2];
		dimSizes[0] = varDim1Size;
		dimSizes[1] = varDim2Size;
		dimVarys = new long[2];
		dimVarys[0] = VARY;
		dimVarys[1] = VARY;
	}
	else
	{
		numDims = (varDim1Size > 1) ? 1L : 0L;
		dimSizes = new long[1];
		dimSizes[0] = varDim1Size;
		dimVarys = new long[1];
		dimVarys[0] = VARY;
	}

	long recVary = {VARY};
	long numElts = 1;

	CDFstatus status;

	status = CDFcreatezVar (_cdfid, name, cdfVar.type, numElts, numDims,
			dimSizes, recVary, dimVarys, &cdfVar.varNum);

	delete[] dimSizes;
	delete[] dimVarys;

	return (status == CDF_OK);
}

bool FileWriterCDF::isInfoInSeparateFile(bool /* onlyOneInterval */, OutputStructure /* outputStructure */)
{
	return false;
}

bool FileWriterCDF::writeError(std::string msg)
{
	addAttribute("AMDA_ERROR", msg, GLOBAL_SCOPE);
	return true;
}



bool FileWriterCDF::writeAMDAInfo(std::string version, std::string createdby, std::string acknowledgement)
{
	addAttribute(AMDA_ABOUT, createdby, GLOBAL_SCOPE);
	addAttribute(AMDA_VERSION, version, GLOBAL_SCOPE);
	addAttribute(AMDA_ACKNOWLEDGEMENT, acknowledgement, GLOBAL_SCOPE);
	return true;
}

bool FileWriterCDF::writeRequestInfo(std::string structure, std::string /* timeFormat */,
		int timeResolution, std::string outputParams, std::string ttPath)
{
	addAttribute(REQUEST_STRUCTURE, structure, GLOBAL_SCOPE);
	addAttribute(REQUEST_TIMEFORMAT, "EPOCH", GLOBAL_SCOPE);
	if (timeResolution > 0)
	{
		std::stringstream timeRes;
		timeRes << timeResolution;
		addAttribute(REQUEST_TIMERES, timeRes.str(), GLOBAL_SCOPE);
	}
	addAttribute(REQUEST_OUTPUTPARAMS, outputParams, GLOBAL_SCOPE);
	if (!ttPath.empty())
		addAttribute(REQUEST_TTPATH, ttPath, GLOBAL_SCOPE);
	return true;
}

bool FileWriterCDF::writeMissionInfo(MissionInfoSPtr missionInfo, long varNum)
{
	if (missionInfo == nullptr)
		return false;

	//write info about mission
	std::vector<std::pair<std::string,std::string>> infoMap = missionInfo->getInfoMap();

	for (auto info : infoMap)
		addAttribute(info.first, info.second, VARIABLE_SCOPE, varNum);
	return true;
}

bool FileWriterCDF::writeInstrumentInfo(InstrumentInfoSPtr instrumentInfo, long varNum)
{
	if (instrumentInfo == nullptr)
		return false;

	//write info about instrument
	std::vector<std::pair<std::string,std::string>> infoMap = instrumentInfo->getInfoMap();

	for (auto info : infoMap)
		addAttribute(info.first, info.second, VARIABLE_SCOPE, varNum);

	MissionInfoSPtr mission	= MissionMgr::getInstance()->getMissionInfoFromId(instrumentInfo->getMissionId());
	writeMissionInfo(mission, varNum);

	return true;
}

bool FileWriterCDF::writeDatasetInfo(DataSetInfoSPtr datasetInfo, long varNum)
{
	if (datasetInfo == nullptr)
		return false;

	//write info about datasetId
	std::vector<std::pair<std::string,std::string>> infoMap = datasetInfo->getInfoMap();

	for (auto info : infoMap)
		addAttribute(info.first, info.second, VARIABLE_SCOPE, varNum);

	InstrumentInfoSPtr instrumentInfo	= InstrumentMgr::getInstance()->getInstrumentInfoFromId(datasetInfo->getInstrumentId());
	writeInstrumentInfo(instrumentInfo, varNum);

	return true;
}

bool FileWriterCDF::writeParameterInfo(ParamInfoSPtr parameterInfo, long varNum)
{
	if (parameterInfo == nullptr)
		return false;

	std::vector<std::pair<std::string,std::string>> infoMap = parameterInfo->getInfoMap(&_parameterManager);

	for (auto info : infoMap)
		addAttribute(info.first, info.second, VARIABLE_SCOPE, varNum);

	DataSetInfoSPtr dataSetInfo = DataSetMgr::getInstance()->getDataSetInfoFromId(parameterInfo->getDatasetId());
	writeDatasetInfo(dataSetInfo, varNum);

	return true;
}

bool FileWriterCDF::writeParamsInfo(ParamPropertiesList& paramPropertiesList, OutputStructure outputStructure,
		std::string currentParamId)
{
	std::set<std::pair<std::string,ParamInfoSPtr>,FileWriter::cmpParamInfoStruct> baseParamsInfoList;
	std::set<std::pair<std::string,ParamInfoSPtr>,FileWriter::cmpParamInfoStruct> derivedParamsInfoList;

	//sort parameters info
	for (auto paramProperties : paramPropertiesList)
	{
		if ((outputStructure == ONE_FILE_PER_PARAMETER_PER_INTERVAL) &&
			(currentParamId != paramProperties->getOutputId()))
			//add info only for current parameter
			continue;
		sortParametersInfoByType(paramProperties->getOutputId(),
				baseParamsInfoList, derivedParamsInfoList);
	}

	//write derived parameters info
	for (auto paramInfo : derivedParamsInfoList)
	{
		std::map<std::string,ParamCDFVar>::iterator it = _cdfVarMap.find(paramInfo.first);
		if (it == _cdfVarMap.end())
		{
			createCDFVar(paramInfo.first.c_str(), DT_NONE, 1, 1,
					_cdfVarMap[paramInfo.first]);
			addAttribute("AMDA_INFO", "Derived parameter description. No data output.", VARIABLE_SCOPE, _cdfVarMap[paramInfo.first].varNum);
		}

		writeParameterInfo(paramInfo.second,_cdfVarMap[paramInfo.first].varNum);
	}

	//write base parameters info
	for (auto paramInfo : baseParamsInfoList)
	{
		std::map<std::string,ParamCDFVar>::iterator it = _cdfVarMap.find(paramInfo.first);
		if (it == _cdfVarMap.end())
		{
			createCDFVar(paramInfo.first.c_str(), DT_NONE, 1, 1,
					_cdfVarMap[paramInfo.first]);
			addAttribute("AMDA_INFO", "Base parameter description. No data output.", VARIABLE_SCOPE, _cdfVarMap[paramInfo.first].varNum);
		}
		writeParameterInfo(paramInfo.second,_cdfVarMap[paramInfo.first].varNum);
	}

	return true;
}

bool FileWriterCDF::writeIntervalInfo(std::string startTime, std::string stopTime)
{
	addAttribute(INTERVAL_START, startTime, GLOBAL_SCOPE);
	addAttribute(INTERVAL_STOP, stopTime, GLOBAL_SCOPE);
	return true;
}

bool FileWriterCDF::addAttribute(std::string attName, std::string attVal,
		long scope, long varNum)
{
	boost::mutex::scoped_lock scoped_lock(ParameterManager::mutexCDFLib);
	if (_cdfid == NULL)
		return false;

	CDFstatus status;

	long attNum = CDFgetAttrNum(_cdfid, (char *)attName.c_str());

	if (attNum < 0)
	{
		status = CDFcreateAttr(_cdfid, (char *)attName.c_str(), scope, &attNum);

		if (status != CDF_OK)
			return false;
	}

	if (scope == GLOBAL_SCOPE)
		status = CDFputAttrgEntry (_cdfid, attNum, 0, CDF_CHAR, attVal.size(), (void *)attVal.c_str());
	else
		status = CDFputAttrzEntry (_cdfid, attNum, varNum, CDF_CHAR, attVal.size(), (void *)attVal.c_str());

	return (status == CDF_OK);
}

bool FileWriterCDF::writeTimeData(std::string /* paramId */, double data, OutputFormatTime /* timeFormat */, bool isFirstParam)
{
	boost::mutex::scoped_lock scoped_lock(ParameterManager::mutexCDFLib);
	if (_cdfid == NULL)
		return false;

	if (!isFirstParam)
		return true;

	std::stringstream isoTime;
	TimeUtil::formatTimeDateInIso(data, isoTime);

	char epString[EPOCH4_STRING_LEN+1];
	memset(&epString,0,sizeof(epString));
	if (!isoTime.str().empty())
		strncpy(epString,isoTime.str().c_str(),EPOCH4_STRING_LEN);

	double epochTime = parseEPOCH4(epString);

	CDFstatus status = CDFputzVarRecordData(_cdfid, _cdfVarMap[CDF_TIME_VAR].varNum,
			_cdfVarMap[CDF_TIME_VAR].recNum, &epochTime);

	++_cdfVarMap[CDF_TIME_VAR].recNum;

	return (status == CDF_OK);
}

bool FileWriterCDF::writeOneData(std::string paramId, int varIndex, void *data)
{
	boost::mutex::scoped_lock scoped_lock(ParameterManager::mutexCDFLib);
	if (_cdfid == NULL)
		return false;

	if (_cdfVarMap[paramId].varNum <= 0)
		return false;

	long indices[2];

	if (_cdfVarMap[paramId].dim2Size > 1)
	{
		indices[0] = varIndex/_cdfVarMap[paramId].dim2Size;
		indices[1] = varIndex%_cdfVarMap[paramId].dim2Size;
	}
	else
		indices[0] = varIndex;

	CDFstatus status = CDFputzVarData(_cdfid, _cdfVarMap[paramId].varNum,
			_cdfVarMap[paramId].recNum, indices, data);

	return (status == CDF_OK);
}

bool FileWriterCDF::writeFloatData(std::string paramId, int varIndex, float data, bool /* precision */)
{
	return writeOneData(paramId, varIndex, &data);
}

bool FileWriterCDF::writeShortData(std::string paramId, int varIndex, short data, bool /* precision */)
{
	return writeOneData(paramId, varIndex, &data);
}

bool FileWriterCDF::writeIntData(std::string paramId, int varIndex, int data, bool /* precision */)
{
	return writeOneData(paramId, varIndex, &data);
}

bool FileWriterCDF::writeDoubleData(std::string paramId, int varIndex, double data, bool /* precision */)
{
	return writeOneData(paramId, varIndex, &data);
}

bool FileWriterCDF::writeLongDoubleData(std::string paramId, int varIndex, long double data, bool /* precision */)
{
	//convert long double to double
	double doubleData = boost::numeric_cast<double>(data);

	return writeOneData(paramId, varIndex, &doubleData);
}

bool FileWriterCDF::writeLogicalData(std::string paramId, int varIndex, AMDA::Parameters::LogicalData data, bool /* precision */)
{
	//convert LogicalData to 2-byte unsigned integer
	unsigned short uShortData;
	switch (data)
	{
	case AMDA::Parameters::LogicalData::False :
		uShortData = 0;
		break;
	case AMDA::Parameters::LogicalData::True :
		uShortData = 1;
		break;
	case AMDA::Parameters::LogicalData::NaN :
		uShortData = 2;
		break;
	default :
		return false;
	}

	return writeOneData(paramId, varIndex, &uShortData);
}

bool FileWriterCDF::goToNextRecord(std::string paramId)
{
	++_cdfVarMap[paramId].recNum;
	return true;
}

bool FileWriterCDF::finalize(bool /* isInfoFile */ )
{
	//nothing to do
	return true;
}

} /* namespace FileWriter */
} /* namespace Download */
} /* namespace ParamOutputImpl */
} /* namespace AMDA */