/*
 * StatisticProcess.cc
 *
 *  Created on: Nov 05, 2014
 *      Author: AKKA
 */

#include "StatisticOperation.hh"
#include "StatisticProcess.hh"
#include "ParamData.hh"

using namespace std;
using namespace boost;
using namespace log4cxx;


namespace AMDA {
namespace Parameters {


LoggerPtr StatisticProcess::_logger(Logger::getLogger("AMDA-Kernel.StatisticProcess"));


/**
 *
 * Default constructor.
 */
StatisticProcess::StatisticProcess(Parameter &parameter, bool isCoverageIndependantOfResultType, int index) :
				DataClient(),
				_parameter(parameter), _args(),
				_isCoverageIndependantOfResultType(isCoverageIndependantOfResultType),
				_index(index), _timeIntervalList(),
				_currentTimeInterval(), _operation(NULL){
}

/**
 * Default destructor.
 */
StatisticProcess::~StatisticProcess() {
	//_parameter.closeConnection(this);
	if (_operation != NULL)
		delete _operation;
	_operation = NULL;
}

/**
 * @overload DataClient::establishConnection
 */
void StatisticProcess::establishConnection()
{
	_parameter.openConnection(this);
}

/**
 * @brief initializes time attribute
 */
TimeStamp StatisticProcess::init(TimeIntervalListSPtr pTimeIntervalList)
{
	LOG4CXX_DEBUG(_logger,"StatisticProcess::init");

	_timeIntervalList = pTimeIntervalList;
	_currentTimeInterval = _timeIntervalList->begin();

	TimeStamp stamp = _parameter.init(this,pTimeIntervalList);

	createOperation();

	return stamp;
}

/*
 * @brief Set arguments map
 */
void StatisticProcess::setArguments(std::map<std::string,std::string>& args)
{
	_args = args;
}

/**
 * @brief compute statistic result
 */
void StatisticProcess::compute(std::vector<std::string> &result, std::vector<std::string> &coverage)
{
	//clear result vectors
	result.clear();
	coverage.clear();

	//get data and compute statistic result
	ParamDataIndexInfo lparamDataIndexInfo = _parameter.getAsync(this).get();

	while ((!lparamDataIndexInfo._noMoreTimeInt && !lparamDataIndexInfo._timeIntToProcessChanged) || (lparamDataIndexInfo._nbDataToProcess > 0))
	{
		_operation->compute(lparamDataIndexInfo);
		if (lparamDataIndexInfo._timeIntToProcessChanged || lparamDataIndexInfo._noMoreTimeInt)
			break;
		lparamDataIndexInfo = _parameter.getAsync(this).get();
	}
	//finalize computation
	_operation->finalizeCompute();

	//compute ideal number of data on the current interval
	AMDA::Parameters::ParamData *paramInput = _parameter.getParamData(this).get();
	int ideal = ((_currentTimeInterval->_stopTime - _currentTimeInterval->_startTime) / paramInput->getMinSampling());

	//push result
	_operation->pushResult(result,coverage,ideal,_isCoverageIndependantOfResultType,_index);

	//go to next interval
	++_currentTimeInterval;
	_operation->reset();
}

std::string StatisticProcess::getResultDimDefinition(bool forCoverage)
{
	if (_operation == NULL)
		return "unknown";
	if (_index >= 0)
		return "1";
	return _operation->getResultDimDefinition(forCoverage);
}

std::string StatisticProcess::getUCD(void)
{
	return "stat";
}

} /* namespace Parameters */
} /* namespace AMDA */