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

#include "TFile.h"
#include "TError.h"

#include "JLang/JUUID.hh"
#include "Jeep/JComment.hh"
#include "JIO/JFileStreamIO.hh"
#include "JDetector/JDetectorToolkit.hh"
#include "JSupport/JFilenameSupportkit.hh"

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

/**
 * \file
 * Auxiliary program to print UUID.
 * \author mdejong
 */
int main(int argc, char **argv)
{
  using namespace std;
  using namespace JPP;

  string         inputFile;
  int            debug;

  try { 

    JParser<> zap("Auxiliary program to print UUID.");
    
    zap['f'] = make_field(inputFile)       = "";
    zap['d'] = make_field(debug)           = 1;

    zap(argc, argv);
  }
  catch(const exception &error) {
    FATAL(error.what() << endl);
  }

  if (inputFile != "") {

    if        (getFilenameExtension(inputFile) == ROOT_FILE_FORMAT) {

      gErrorIgnoreLevel = kError;

      TFile* file = TFile::Open(inputFile.c_str(), "EXISTS");

      if (file != NULL) {
	file->GetUUID().Print();
	file->Close();
      } else
	return 1;

    } else if (getFilenameExtension(inputFile) == ASCII_FILE_FORMAT            ||
	       getFilenameExtension(inputFile) == KM3NET_DETECTOR_FILE_FORMAT) {

      ifstream in(inputFile.c_str());
    
      JComment comment;

      if (in >> comment && comment.hasUUID())
	cout << comment.getUUID() << endl;
      else
	return 1;

      in.close();

    } else if (getFilenameExtension(inputFile) == BINARY_DETECTOR_FILE_FORMAT[0] ||
	       getFilenameExtension(inputFile) == BINARY_DETECTOR_FILE_FORMAT[1]) {

      JFileStreamReader in(inputFile.c_str());

      JComment comment;

      char c;

      for (string buffer; in >> c && c == JComment::START_COMMENT; ) {

        in >> buffer;

        comment.add(buffer);
      }

      if (comment.hasUUID())
	cout << comment.getUUID() << endl;
      else
	return 1;

      in.close();
    }

  } else {

    cout << JUUID::rndm() << endl;
  }

  return 0;
}