#ifndef __JSUPPORT__JSUMMARYFILEROUTER__
#define __JSUPPORT__JSUMMARYFILEROUTER__

#include <string>

#include "km3net-dataformat/online/JDAQSummaryslice.hh"
#include "km3net-dataformat/online/JDAQHeader.hh"

#include "JDAQ/JDAQEvaluator.hh"
#include "JDAQ/JSupport.hh"

#include "JSupport/JSummaryRouter.hh"
#include "JSupport/JTreeScanner.hh"


/**
 * \author mdejong
 */

namespace JSUPPORT {}
namespace JPP { using namespace JSUPPORT; }

namespace JSUPPORT {

  using KM3NETDAQ::JDAQSummaryslice;
  using KM3NETDAQ::JDAQEvaluator;
  using KM3NETDAQ::JDAQHeader;
  

  /**
   * File router for fast addressing of summary data.
   *
   * The member method update() should be used to update the internal router for a given event.
   * The member method getRate(const JDAQPMTIdentifier&) const can subsequently be used to obtain
   * the measured singles rate for a given PMT at the closest time of the event.
   */
  class JSummaryFileRouter :
    public JSummaryRouter,
    public JTreeScanner<JDAQSummaryslice, JDAQEvaluator>
  {
  public:
    /**
     * Constructor.
     *
     * \param  file_name       file name
     */
    JSummaryFileRouter(const std::string& file_name) :
      JSummaryRouter(),
      JTreeScanner<JDAQSummaryslice, JDAQEvaluator>(file_name)
    {}


    /**
     * Constructor.
     *
     * \param  file_name       file name
     * \param  rate_Hz         default singles rate [Hz]
     */
    JSummaryFileRouter(const std::string& file_name,
		       const double       rate_Hz) :
      JSummaryRouter(rate_Hz),
      JTreeScanner<JDAQSummaryslice, JDAQEvaluator>(file_name)
    {}


    /**
     * Update router.
     *
     * \param  header          header
     */
    void update(const JDAQHeader& header)
    {
      static Long64_t previous = -1;

      const  Long64_t index    = this->find(header);

      if (index != -1) {

	if (index != previous) {

	  previous = index;

	  JSummaryRouter::update(this->getEntry(index));
	}
      }
    }
  };
}

#endif