// --------------------------------------------------------------------------
//
// CBM Computing School, Kolkata, February 2018
// Macro for Exercise 3: Reconstruction
// V. Friese   15/02/2018
//
// --------------------------------------------------------------------------


void reconstruction()
{

  // ========================================================================
  //          Adjust this part according to your requirements

  // --- Logger settings ----------------------------------------------------
  TString logLevel     = "INFO";
  TString logVerbosity = "LOW";
  // ------------------------------------------------------------------------


  // -----   Environment   --------------------------------------------------
  TString myName = "reco macro";  // this macro's name for screen output
  TString srcDir = gSystem->Getenv("VMCWORKDIR");  // top source directory
  // ------------------------------------------------------------------------


  // -----   In- and output file names   ------------------------------------
  TString setupName = "sis100_muon_jpsi";
  TString rawFile = "exercise.raw.root";
  TString mcFile  = "exercise.mc.root";
  TString outFile = "exercise.reco.root";  // Output file (reco)
  TString parFile = "exercise.par.root";    // Parameter file
  // ------------------------------------------------------------------------



  // -----   Load the geometry setup   -------------------------------------
  std::cout << std::endl;
  TString setupFile = srcDir + "/geometry/setup/setup_" + setupName + ".C";
  TString setupFunct = "setup_";
  setupFunct = setupFunct + setupName + "()";
  std::cout << "-I- " << myName << ": Loading macro " << setupFile << std::endl;
  gROOT->LoadMacro(setupFile);
  gROOT->ProcessLine(setupFunct);
  CbmSetup::Instance()->SetActive(kTof, kFALSE);
  // ------------------------------------------------------------------------


  // -----   Parameter files as input to the runtime database   -------------
  std::cout << std::endl;
  std::cout << "-I- " << myName << ": Defining parameter files " << std::endl;
  TList *parFileList = new TList();
  TString geoTag;

  // - TRD digitisation parameters
  if ( CbmSetup::Instance()->GetGeoTag(kTrd, geoTag) ) {
  	TObjString* trdFile = new TObjString(srcDir + "/parameters/trd/trd_" + geoTag + ".digi.par");
  	parFileList->Add(trdFile);
    std::cout << "-I- " << myName << ": Using parameter file "
    		      << trdFile->GetString() << std::endl;
  }

  // - TOF digitisation parameters
  if ( CbmSetup::Instance()->GetGeoTag(kTof, geoTag) ) {
  	TObjString* tofFile = new TObjString(srcDir + "/parameters/tof/tof_" + geoTag + ".digi.par");
  	parFileList->Add(tofFile);
    std::cout << "-I- " << myName << ": Using parameter file "
    		      << tofFile->GetString() << std::endl;
  	TObjString* tofBdfFile = new TObjString(srcDir + "/parameters/tof/tof_" + geoTag + ".digibdf.par");
  	parFileList->Add(tofBdfFile);
    std::cout << "-I- " << myName << ": Using parameter file "
    		      << tofBdfFile->GetString() << std::endl;
  }
  // ------------------------------------------------------------------------

  // In general, the following parts need not be touched
  // ========================================================================


  // -----   Timer   --------------------------------------------------------
  TStopwatch timer;
  timer.Start();
  // ------------------------------------------------------------------------


  // ----    Debug option   -------------------------------------------------
  gDebug = 0;
  // ------------------------------------------------------------------------


  // -----   FairRunAna   ---------------------------------------------------
  FairRunAna *run = new FairRunAna();
  FairFileSource* inputSource = new FairFileSource(rawFile);
  run->SetSource(inputSource);
  run->SetOutputFile(outFile);
  run->SetGenerateRunInfo(kTRUE);
  run->SetGenerateRunInfo(kTRUE);
  Bool_t hasFairMonitor = Has_Fair_Monitor();
  if (hasFairMonitor) FairMonitor::GetMonitor()->EnableMonitor(kTRUE);
  // ------------------------------------------------------------------------


  // -----   Logger settings   ----------------------------------------------
  FairLogger::GetLogger()->SetLogScreenLevel(logLevel.Data());
  FairLogger::GetLogger()->SetLogVerbosityLevel(logVerbosity.Data());
  // ------------------------------------------------------------------------

  // ----- Mc Data Manager   ------------------------------------------------
  CbmMCDataManager* mcManager=new CbmMCDataManager("MCManager", 1);
  mcManager->AddFile(mcFile);
  run->AddTask(mcManager);
  // ------------------------------------------------------------------------


  // -----   Reconstruction tasks   -----------------------------------------
  std::cout << std::endl;
  macroName = srcDir + "/macro/run/modules/reconstruct.C";
  std::cout << "Loading macro " << macroName << std::endl;
  gROOT->LoadMacro(macroName);
  Bool_t recoSuccess = gROOT->ProcessLine("reconstruct()");
  if ( ! recoSuccess ) {
  	std::cerr << "-E-" << myName << ": error in executing " << macroName
  			<< std::endl;
  	return;
  }
  std::cout << "-I-" << myName << ": " << macroName << " excuted successfully"
  		<< std::endl;
  // ------------------------------------------------------------------------
  
  
  // -----   Match reco to MC data   ----------------------------------------
  FairTask* match = new CbmMatchRecoToMC();
  run->AddTask(match);
  // ------------------------------------------------------------------------


  // -----  Parameter database   --------------------------------------------
  std::cout << std::endl << std::endl;
  std::cout << "-I- " << myName << ": Set runtime DB" << std::endl;
  FairRuntimeDb* rtdb = run->GetRuntimeDb();
  FairParRootFileIo* parIo1 = new FairParRootFileIo();
  FairParAsciiFileIo* parIo2 = new FairParAsciiFileIo();
  parIo1->open(parFile.Data(),"UPDATE");
  rtdb->setFirstInput(parIo1);
  if ( ! parFileList->IsEmpty() ) {
    parIo2->open(parFileList, "in");
    rtdb->setSecondInput(parIo2);
  }
  // ------------------------------------------------------------------------


  // -----   Run initialisation   -------------------------------------------
  std::cout << std::endl;
  std::cout << "-I- " << myName << ": Initialise run" << std::endl;
  run->Init();
  // ------------------------------------------------------------------------

  rtdb->setOutput(parIo1);
  rtdb->saveOutput();
  rtdb->print();

  // -----   Start run   ----------------------------------------------------
  std::cout << std::endl << std::endl;
  std::cout << "-I- " << myName << ": Starting run" << std::endl;
  run->Run(100);
  // ------------------------------------------------------------------------


  // -----   Finish   -------------------------------------------------------
  timer.Stop();
  Double_t rtime = timer.RealTime();
  Double_t ctime = timer.CpuTime();
  std::cout << std::endl << std::endl;
  std::cout << "Macro finished succesfully." << std::endl;
  std::cout << "Output file is " << outFile << std::endl;
  std::cout << "Parameter file is " << parFile << std::endl;
  std::cout << "Real time " << rtime << " s, CPU time " << ctime << " s"
  		      << std::endl;
  std::cout << std::endl;
  std::cout << " Test passed" << std::endl;
  std::cout << " All ok " << std::endl;
  // ------------------------------------------------------------------------

  // -----   Resource monitoring   ------------------------------------------
  if ( Has_Fair_Monitor() ) {      // FairRoot Version >= 15.11
    // Extract the maximal used memory an add is as Dart measurement
    // This line is filtered by CTest and the value send to CDash
    FairSystemInfo sysInfo;
    Float_t maxMemory=sysInfo.GetMaxMemory();
    std::cout << "<DartMeasurement name=\"MaxMemory\" type=\"numeric/double\">";
    std::cout << maxMemory;
    std::cout << "</DartMeasurement>" << std::endl;

    Float_t cpuUsage=ctime/rtime;
    std::cout << "<DartMeasurement name=\"CpuLoad\" type=\"numeric/double\">";
    std::cout << cpuUsage;
    std::cout << "</DartMeasurement>" << std::endl;
  }

  RemoveGeoManager();
}