/*
 * VirtualInstrumentInterval.hh
 *
 *  Created on: Nov 25, 2014
 *      Author: AKKA
 */

#ifndef VIRTUALINSTRUMENTINTERVAL_HH_
#define VIRTUALINSTRUMENTINTERVAL_HH_

#include <string>
#include <map>
#include <vector>

#include <boost/shared_ptr.hpp>
#include <boost/weak_ptr.hpp>

#include "Worker.hh"

#include "TimeInterval.hh"
#include "LocalParamData.hh"

namespace AMDA {

namespace LocalFileInterface {

class ParamFlow;

typedef boost::shared_ptr<ParamFlow> ParamFlowSPtr;

class VirtualInstrument;

/**
 * @class VirtualInstrumentInterval
 * @brief Class responsible to get data from a time interval for dispatch them into some DataFlow.
 */
class VirtualInstrumentInterval : public AMDA::Helpers::Worker
{
public:

	typedef std::list<TimeTableCatalog::TimeInterval> TimeIntervalList;

	/**
	 * @brief Constructor
	 */
	VirtualInstrumentInterval(VirtualInstrument& pVI, TimeIntervalList* pTimeIntervalList);

	/**
	 * @brief Destructor
	 */
	virtual ~VirtualInstrumentInterval();

	/*
	 * @brief get ParamFlow for a given param ID
	 */
	ParamFlowSPtr getParamFlow(const std::string& pParamId, LocalParamType paramType, int dim1Size, int dim2Size);

	/**
	 * @return nbData Available or 0 if no Data
	 *  blocking operation
	 */
	boost::shared_future<unsigned int> getAsync() {
		AMDA::Helpers::Task<unsigned int>* task = new AMDA::Helpers::Task<unsigned int>(
				boost::bind(&VirtualInstrumentInterval::getOneDataBloc, this));
		boost::shared_future<unsigned int> future(task->getFuture());
		_taskList.push(task); // assuming internal_queue member
		return future;
	}

	/**
	 * @brief Define if time interval was set to another one.
	 */
	bool isTimeIntToProcessChanged() { return _timeIntToProcessChanged; }

	/**
	 * @brief Define if time interval is the last one.
	 */
	bool isNoMoreTimeInt() { return _noMoreTimeInt; }

protected:
	typedef boost::weak_ptr<ParamFlow> ParamFlowWPtr;
	typedef std::map<std::string,ParamFlowWPtr> ParamFlowList;

	/**
	 * @brief Call _step pointer function which is different in function of the program step.
	 */
	unsigned int getOneDataBloc();

private:

	/**
	 * @brief Load data and dispatch results to ParamFlow.
	 * When no more data set the _step function pointer to writeEmptyData.
	 */
	unsigned int writeData();

	/**
	 * @brief write NULL Packet.
	 */
	unsigned int writeEmptyData();

	unsigned int writeNoData();

	unsigned int (VirtualInstrumentInterval::*_step)();

	/*
	 * @brief Set next TimeInterval to proceed
	 */
	bool setTimeInterval();

	VirtualInstrument& _vi; /*!< Reference an associated Virtual Instrument */

	TimeIntervalList& _timeIntervalList;
	TimeIntervalList::iterator _currentTimeIntToProcess;
	/**
	 * @brief Define if data retrieving for a time interval changed.
	 */
	bool _timeIntToProcessChanged;

	/**
	 * @brief Define if data retrieving is at the last interval.
	 */
	bool _noMoreTimeInt;

	ParamFlowSPtr _paramFlowSPtr;

	int _crtFileIndex;

	int _crtRecordIndex;

	bool _nodata;
};

} /* namespace LocalFileInterface */
} /* namespace AMDA */
#endif /* VIRTUALINSTRUMENTINTERVAL_HH_ */