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

#include "TROOT.h"
#include "TFile.h"
#include "TH1D.h"

#include "JTools/JRange.hh"

#include "JROOT/JRootToolkit.hh"

#include "JDAQ/JDAQEventIO.hh"
#include "JDetector/JDetector.hh"
#include "JDetector/JDetectorToolkit.hh"
#include "JDetector/JDAQHitRouter.hh"

#include "JSupport/JMultipleFileScanner.hh"
#include "JSupport/JSupport.hh"

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


/**
 * \file
 *
 * Example program to monitor event duration.
 * \author mdejong
 */
int main(int argc, char **argv)
{
  using namespace std;
  using namespace JPP;
  using namespace KM3NETDAQ;

  JMultipleFileScanner<JDAQEvent> inputFile;
  JLimit_t&      numberOfEvents = inputFile.getLimit();
  string         outputFile;
  string         detectorFile;
  double         T_ns;
  int            qaqc;
  int            debug;

  try { 

    JParser<> zap("Example program to  monitor event duration.");
    
    zap['f'] = make_field(inputFile);
    zap['o'] = make_field(outputFile)          = "mermaid.root";
    zap['a'] = make_field(detectorFile);
    zap['n'] = make_field(numberOfEvents)      = JLimit::max();
    zap['T'] = make_field(T_ns,   "Time limit for event duration [ns]")               = 10.0e3;
    zap['Q'] = make_field(qaqc)                =  0;
    zap['d'] = make_field(debug)               =  2;
    
    zap(argc, argv);
  }
  catch(const exception& error) {
    FATAL(error.what() << endl);
  }


  JDetector detector;

  try {
    load(detectorFile, detector);
  }
  catch(const JException& error) {
    FATAL(error);
  }

  const JDAQHitRouter router(detector);

  TH1D h1("h1", NULL, 100, 0.0, 10.0e3);

  size_t N = 0;

  while (inputFile.hasNext()) {

    STATUS("event: " << setw(10) << inputFile.getCounter() << '\r'); DEBUG(endl);

    JDAQEvent* event = inputFile.next();
    
    JTimeRange tx    = JTimeRange::DEFAULT_RANGE();

    for (JDAQEvent::const_iterator<JDAQTriggeredHit> hit = event->begin<JDAQTriggeredHit>(); hit != event->end<JDAQTriggeredHit>(); ++hit) {
      tx.include(getTime(*hit, router.getPMT(*hit)));
    }

    h1.Fill(tx.getLength());

    if (tx.getLength() >= T_ns) {
      N += 1;
    }
  }
  STATUS(endl);

  TFile out(outputFile.c_str(), "recreate");

  out << h1;

  out.Write();
  out.Close();

  NOTICE("Number of event with duration beyond " << FIXED(9,0) << T_ns << " [ns] " << N << endl);

  QAQC(N << endl);

  return 0;
}