#ifndef __JTRIGGER__JBUILD__
#define __JTRIGGER__JBUILD__

#include "JLang/JSharedPointer.hh"
#include "km3net-dataformat/online/JDAQSuperFrame.hh"
#include "JDetector/JModule.hh"
#include "JTrigger/JSuperFrame2D.hh"
#include "JTrigger/JPreprocessor.hh"
#include "JTrigger/JDAQHitSelector.hh"
#include "JTrigger/JMatch.hh"


/**
 * \author mdejong
 */

namespace JTRIGGER {}
namespace JPP { using namespace JTRIGGER; }

namespace JTRIGGER {

  using KM3NETDAQ::JDAQSuperFrame;
  using JDETECTOR::JModule;


  /**
   * Auxiliary base class for hit building.
   *
   * This class provides for 
   *   - a configurable selection of DAQ hits; and
   *   - a configurable method to pre-process consecutive hits.
   *
   * The underlying action is subsequently transferred to JSuperFrame2D.
   */
  template<class JHit_t>
  struct JBuild {

    typedef JHit_t                                                       value_type;
    typedef JMatch<value_type>                                           match_type;
    typedef JDAQHitSelector                                              selector_type;

    /**
     * Default constructor.
     *
     * The default corresponds to no pre-processing of hits.
     */
    JBuild() :
      option(JPreprocessor::none_t),
      selector(new JDAQHitDefaultSelector())
    {}


    /**
     * Set pre-processor of consecutive hits.
     *
     * \param  option         option
     * \param  match          match criterion
     */
    void setPreprocessor(const JPreprocessor::JOption_t option, const match_type& match)
    {
      this->option = option;
      this->match.reset(match.clone());
    }


    /**
     * Reset pre-processor of consecutive hits.
     */
    void resetPreprocessor()
    {
      this->option = JPreprocessor::none_t;
      this->match.reset();
    }


    /**
     * Set DAQ hit selector.
     *
     * \param  selector       DAQ hit selector
     */
    void setDAQHitSelector(const JDAQHitSelector& selector)
    {
      this->selector.reset(selector.clone());
    }


    /**
     * Reset DAQ hit selector.
     */
    void resetDAQHitSelector()
    {
      this->selector.reset(new JDAQHitDefaultSelector());
    }


    /**
     * Demultiplex and pre-process DAQ super frame.
     *
     * \param  input          DAQ super frame
     * \param  module         module data
     * \return                2D super frame
     */
    JSuperFrame2D<JHit_t>& demultiplex(const JDAQSuperFrame& input,
				       const JModule&        module) const
    {
      JSuperFrame2D<JHit_t>& buffer = JSuperFrame2D<JHit_t>::demultiplex(input, module, *selector);

      if (match.is_valid()) {
	buffer.preprocess(option, *match);
      }

      return buffer;
    }

    JPreprocessor::JOption_t              option;       //!< pre-processor option
    JLANG::JSharedPointer<match_type>     match;        //!< pre-processor match criterion
    JLANG::JSharedPointer<selector_type>  selector;     //!< DAQ hit selector
  };
}

#endif