#include <string>
#include <iostream>
#include <iomanip>
#include <vector>

#include "km3net-dataformat/definitions/reconstruction.hh"

#include "km3net-dataformat/offline/Head.hh"
#include "km3net-dataformat/offline/Evt.hh"

#include "JDAQ/JDAQEventIO.hh"
#include "JDAQ/JDAQSummarysliceIO.hh"

#include "JSupport/JMeta.hh"
#include "JSupport/JSupport.hh"
#include "JSupport/JTreeScanner.hh"
#include "JSupport/JFileRecorder.hh"
#include "JSupport/JParallelFileScanner.hh"
#include "JSupport/JMonteCarloFileSupportkit.hh"

#include "JTrigger/JTriggerParameters.hh"

#include "JReconstruction/JEvt.hh"
#include "JReconstruction/JEvtToolkit.hh"
#include "JReconstruction/JEventSelector.hh"

#include "Jeep/JPrint.hh"
#include "Jeep/JParser.hh"
#include "Jeep/JMessage.hh"


/**
 * \file
 *
 * Program to extract events.
 *
 * \author bjjung
 */
int main(int argc, char **argv)
{
  using namespace std;
  using namespace JPP;
  using namespace KM3NETDAQ;

  typedef JTYPELIST<JRemove<JAllTypes_t, JDAQTimesliceTypes_t>::typelist, JFIT::JEvt>::typelist   output_typelist;
  
  typedef JParallelFileScanner< JTypeList<JDAQEvent, JEvt> >       JParallelFileScanner_t;
  typedef JParallelFileScanner_t::multi_pointer_type               multi_pointer_type;

  JParallelFileScanner_t          inputFile;
  size_t                          numberOfEvents;
  JFileRecorder<output_typelist>  outputFile;  
  int                             application;
  JEventSelector                  event_selector;
  int                             debug;


  try { 

    JParser<> zap("Program to extract events.");
    
    zap['f'] = make_field(inputFile,      "input file (output of JXXXReconstruction.sh)");
    zap['n'] = make_field(numberOfEvents, "maximum number of selected events")
      = std::numeric_limits<size_t>::max();
    zap['o'] = make_field(outputFile,     "output file name")
      = "extract.root";
    zap['A'] = make_field(application)
      = JMUONGANDALF, JMUONENERGY, JMUONSTART, JSHOWERCOMPLETEFIT, JSHOWERENERGYPREFIT, JSHOWERDIRECTIONPREFIT;
    zap['L'] = make_field(event_selector)
      = JPARSER::initialised();
    zap['d'] = make_field(debug)
      = 1;
    
    zap(argc, argv);
  }
  catch(const exception& error) {
    FATAL(error.what() << endl);
  }


  outputFile.open();
  outputFile.put(JMeta(argc, argv));
    

  // Select events

  size_t N = 0;

  for (JTreeScanner<Evt> mc(inputFile); inputFile.hasNext() && N < numberOfEvents; ) {

    cout << "\revent: " << setw(8) << inputFile.getCounter() << flush;

    multi_pointer_type ps = inputFile.next();

    JDAQEvent* tev   = ps;
    JEvt*      in    = ps;
    Evt*       event = NULL;    

    in->select(JHistory::is_event(application));

    if (in->empty()) { continue; }

    sort(in->begin(), in->end(), qualitySorter);

    if (mc.getEntries() != 0) {
      event = mc.getEntry(tev->getCounter());
    }
    
    if (!event_selector(*tev, *in, event)) {
      continue;
    }

    outputFile.put(*tev);
    outputFile.put(*in);

    ++N;
  }

  
  // Copy header

  JHead header = getHeader(inputFile.getFilename());
  header.createUUID(); // Ensure UUID is set

  Head head;
  copy(header, head);

  outputFile.put(head);

  
  // Copy rest

  JMultipleFileScanner<JRemove<output_typelist, JTYPELIST<JFIT::JEvt, JDAQEvent, Head>::typelist>::typelist> io(inputFile);

  io >> outputFile;

  outputFile.close();

  return 0;
}