#ifndef __IntradayStochastic_h_
#define __IntradayStochastic_h_

#include "CurrentCandles.h"
#include "StochasticFormula.h"

/* This computes the stocastics indicator based on intraday data.  We are
 * looking at the close of each candle.  We update with each print, rather than
 * waiting for the last candle to be complete.
 * 
 * http://stockcharts.com/school/doku.php?id=chart_school:technical_indicators:stochastic_oscillator
 */

class IntradayStochastic : public DataNode
{
private:
  CurrentCandles *_candleData;

  // Cached results
  bool _valid;
  double _pK, _pD;
  CurrentCandles::Epoch _lastEpoch;
  double _lastPrice;

  StochasticFormula _formula;
  void onWakeup(int msgId);
  void makeCurrent();

  IntradayStochastic(DataNodeArgument const &args);
  friend class DataNode;
public:
  void get(bool &valid, double &pK, double &pD);

  static DataNodeLink *findFull(DataNodeListener *listener, int msgId,
				IntradayStochastic *&node,
				std::string const &symbol,
				int minutesPerBar, 
				int rangeCount,
				int pKSmaCount,
				int pDSmaCount);
  // Internally we always compute the full stocastic formula.  We do this for
  // simplicity.  The following are provided for convenience.
  static DataNodeLink *findFast(DataNodeListener *listener, int msgId,
                                IntradayStochastic *&node,
                                std::string const &symbol,
                                int minutesPerBar,
                                int rangeCount,
                                int pDSmaCount)
  {
    return findFull(listener, msgId, node,
		    symbol, minutesPerBar, rangeCount, 1, pDSmaCount); 
  }
  static DataNodeLink *findSlow(DataNodeListener *listener, int msgId,
                                IntradayStochastic *&node,
                                std::string const &symbol,
                                int minutesPerBar,
                                int rangeCount,
                                int pDSmaCount)
  {
    return findFull(listener, msgId, node,
		    symbol, minutesPerBar, rangeCount, 3, pDSmaCount); 
  }


};

#endif