// One can use the configuration macro in compiled mode by
// root [0] gSystem->Load("libgeant321");
// root [0] gSystem->SetIncludePath("-I$ROOTSYS/include -I$ALICE_ROOT/include\
//                   -I$ALICE_ROOT -I$ALICE/geant3/TGeant3");
// root [0] .x grun.C(1,"Config.C++")

#if !defined(__CINT__) || defined(__MAKECINT__)
#include <Riostream.h>
#include <TRandom.h>
#include <TSystem.h>
#include <TVirtualMC.h>
#include <TGeant3TGeo.h>
#include "STEER/AliRunLoader.h"
#include "STEER/AliRun.h"
#include "STEER/AliConfig.h"
#include "PYTHIA6/AliDecayerPythia.h"
#include "EVGEN/AliGenCocktail.h"
#include "EVGEN/AliGenHIJINGpara.h"
#include "STEER/AliMagF.h"
#include "STRUCT/AliBODY.h"
#include "STRUCT/AliMAG.h"
#include "STRUCT/AliABSOv3.h"
#include "STRUCT/AliDIPOv3.h"
#include "STRUCT/AliHALLv3.h"
#include "STRUCT/AliFRAMEv2.h"
#include "STRUCT/AliSHILv3.h"
#include "STRUCT/AliPIPEv3.h"
#include "ITS/AliITSvPPRasymmFMD.h"
#include "TPC/AliTPCv2.h"
#include "TOF/AliTOFv6T0.h"
#include "HMPID/AliHMPIDv2.h"
#include "ZDC/AliZDCv2.h"
#include "TRD/AliTRDv1.h"
#include "FMD/AliFMDv1.h"
#include "MUON/AliMUONv1.h"
#include "PHOS/AliPHOSv1.h"
#include "PMD/AliPMDv1.h"
#include "T0/AliT0v1.h"
#include "EMCAL/AliEMCALv2.h"
#include "ACORDE/AliACORDEv0.h"
#include "VZERO/AliVZEROv7.h"
#endif

Float_t EtaToTheta(Float_t arg);

void Config()
{
    // ThetaRange is (0., 180.). It was (0.28,179.72) 7/12/00 09:00
    // Theta range given through pseudorapidity limits 22/6/2001

    // Set Random Number seed
  gRandom->SetSeed(0); // Set 0 to use the currecnt time
  AliLog::Message(AliLog::kInfo, Form("Seed for random number generation = %d",gRandom->GetSeed()), "Config.C", "Config.C", "Config()","Config.C", __LINE__);


   // libraries required by geant321
#if defined(__CINT__)
    gSystem->Load("libgeant321");
#endif

    new     TGeant3TGeo("C++ Interface to Geant3");

    if(!AliCDBManager::Instance()->IsDefaultStorageSet()){
      AliCDBManager::Instance()->SetDefaultStorage("local://$ALICE_ROOT/OCDB");
      AliCDBManager::Instance()->SetRun(0);
    }

    AliRunLoader* rl=0x0;

    AliLog::Message(AliLog::kInfo, "Creating Run Loader", "Config.C", "Config.C", "Config()"," Config.C", __LINE__);

    rl = AliRunLoader::Open("galice.root",
			    AliConfig::GetDefaultEventFolderName(),
			    "recreate");
    if (rl == 0x0)
      {
	gAlice->Fatal("Config.C","Can not instatiate the Run Loader");
	return;
      }
    rl->SetCompressionLevel(2);
    rl->SetNumberOfEventsPerFile(3);
    gAlice->SetRunLoader(rl);
    // gAlice->SetGeometryFromFile("geometry.root");
    // gAlice->SetGeometryFromCDB();

    // Set the trigger configuration
    AliSimulation::Instance()->SetTriggerConfig("Pb-Pb");
    cout<<"Trigger configuration is set to  Pb-Pb"<<endl;

    //
    // Set External decayer
    TVirtualMCDecayer *decayer = new AliDecayerPythia();

    decayer->SetForceDecay(kAll);
    decayer->Init();
    gMC->SetExternalDecayer(decayer);
    //=======================================================================
    // ************* STEERING parameters FOR ALICE SIMULATION **************
    // --- Specify event type to be tracked through the ALICE setup
    // --- All positions are in cm, angles in degrees, and P and E in GeV


    gMC->SetProcess("DCAY",1);
    gMC->SetProcess("PAIR",1);
    gMC->SetProcess("COMP",1);
    gMC->SetProcess("PHOT",1);
    gMC->SetProcess("PFIS",0);
    gMC->SetProcess("DRAY",0);
    gMC->SetProcess("ANNI",1);
    gMC->SetProcess("BREM",1);
    gMC->SetProcess("MUNU",1);
    gMC->SetProcess("CKOV",1);
    gMC->SetProcess("HADR",1);
    gMC->SetProcess("LOSS",2);
    gMC->SetProcess("MULS",1);
    gMC->SetProcess("RAYL",1);

    Float_t cut = 1.e-3;        // 1MeV cut by default
    Float_t tofmax = 1.e10;

    gMC->SetCut("CUTGAM", cut);
    gMC->SetCut("CUTELE", cut);
    gMC->SetCut("CUTNEU", cut);
    gMC->SetCut("CUTHAD", cut);
    gMC->SetCut("CUTMUO", cut);
    gMC->SetCut("BCUTE",  cut); 
    gMC->SetCut("BCUTM",  cut); 
    gMC->SetCut("DCUTE",  cut); 
    gMC->SetCut("DCUTM",  cut); 
    gMC->SetCut("PPCUTM", cut);
    gMC->SetCut("TOFMAX", tofmax); 


    int     nParticles = 20000;
    if (gSystem->Getenv("CONFIG_NPARTICLES"))
    {
        nParticles = atoi(gSystem->Getenv("CONFIG_NPARTICLES"));
    }


    AliGenCocktail *gener = new AliGenCocktail();
    gener->SetPhiRange(0, 360);
    // Set pseudorapidity range from -8 to 8.
    Float_t thmin = EtaToTheta(1.2);   // theta min. <---> eta max
    Float_t thmax = EtaToTheta(-1.2);  // theta max. <---> eta min 
    gener->SetThetaRange(thmin,thmax);
    gener->SetOrigin(0, 0, 0);  //vertex position
    gener->SetSigma(0, 0, 0);   //Sigma in (X,Y,Z) (cm) on IP position

    AliGenHIJINGpara *hijingparam = new AliGenHIJINGpara(nParticles);
    hijingparam->SetMomentumRange(0.2, 999);
    gener->AddGenerator(hijingparam,"HIJING PARAM",1);
    //
    //
    //PIONS
    Int_t nParticles2 =10;
    AliGenBox *genboxPIP = new AliGenBox(nParticles2);
    genboxPIP->SetPart(211);
    genboxPIP->SetPtRange(0.2, 100.00);
    AliGenBox *genboxPIM = new AliGenBox(nParticles2);
    genboxPIM->SetPart(-211);
    genboxPIM->SetPtRange(0.2, 100.00);
    //Electrons
    AliGenBox *genboxEP = new AliGenBox(nParticles2);
    genboxEP->SetPart(11);
    genboxEP->SetPtRange(0.1, 100.00);
    AliGenBox *genboxEM = new AliGenBox(nParticles2);
    genboxEM->SetPart(-11);
    genboxEM->SetPtRange(0.1, 100.00);
    //Kaons
    AliGenBox *genboxKP = new AliGenBox(nParticles2);
    genboxKP->SetPart(321);
    genboxKP->SetPtRange(0.2, 100.00);
    AliGenBox *genboxKM = new AliGenBox(nParticles2);
    genboxKM->SetPart(-321);
    genboxKM->SetPtRange(0.2, 100.00);
    // mu
    AliGenBox *genboxMP = new AliGenBox(nParticles2);
    genboxMP->SetPart(13);
    genboxMP->SetPtRange(0.2, 100.00);
    AliGenBox *genboxMM = new AliGenBox(nParticles2);
    genboxMM->SetPart(-13);
    genboxMM->SetPtRange(0.2, 100.00);
    // Protons
    AliGenBox *genboxPP = new AliGenBox(nParticles2);
    genboxPP->SetPart(2212);
    genboxPP->SetPtRange(0.2, 100.00);
    AliGenBox *genboxPM = new AliGenBox(nParticles2);
    genboxPM->SetPart(-2212);
    genboxPM->SetPtRange(0.2, 100.00);

 

    gener->AddGenerator(genboxPIP,"GENBOX",1);
    gener->AddGenerator(genboxPIM,"GENBOX",1);
    gener->AddGenerator(genboxEM,"GENBOX",1);
    gener->AddGenerator(genboxEP,"GENBOX",1);
    gener->AddGenerator(genboxKM,"GENBOX",1);
    gener->AddGenerator(genboxKP,"GENBOX",1);
    gener->AddGenerator(genboxMM,"GENBOX",1);
    gener->AddGenerator(genboxMP,"GENBOX",1);
    gener->AddGenerator(genboxPM,"GENBOX",1);
    gener->AddGenerator(genboxPP,"GENBOX",1);

    gener->Init();



    // 
    // Activate this line if you want the vertex smearing to happen
    // track by track
    //
    //gener->SetVertexSmear(perTrack); 
    // Field (L3 0.4 T)
    TGeoGlobalMagField::Instance()->SetField(new AliMagF("Maps","Maps", 1., 1., AliMagF::k5kG));

    Int_t   iABSO  =  1;
    Int_t   iDIPO  =  1;
    Int_t   iFMD   =  1;
    Int_t   iFRAME =  1;
    Int_t   iHALL  =  1;
    Int_t   iITS   =  1;
    Int_t   iMAG   =  1;
    Int_t   iMUON  =  1;
    Int_t   iPHOS  =  1;
    Int_t   iPIPE  =  1;
    Int_t   iPMD   =  1;
    Int_t   iHMPID  =  1;
    Int_t   iSHIL  =  1;
    Int_t   iT0 =  1;
    Int_t   iTOF   =  1;
    Int_t   iTPC   =  1;
    Int_t   iTRD   =  1;
    Int_t   iZDC   =  1;
    Int_t   iEMCAL =  1;
    Int_t   iACORDE   =  0;
    Int_t   iVZERO =  1;
    rl->CdGAFile();
    //=================== Alice BODY parameters =============================
    AliBODY *BODY = new AliBODY("BODY", "Alice envelop");

    if (iMAG)
    {
        //=================== MAG parameters ============================
        // --- Start with Magnet since detector layouts may be depending ---
        // --- on the selected Magnet dimensions ---
        AliMAG *MAG = new AliMAG("MAG", "Magnet");
    }


    if (iABSO)
    {
        //=================== ABSO parameters ============================
        AliABSO *ABSO = new AliABSOv3("ABSO", "Muon Absorber");
    }

    if (iDIPO)
    {
        //=================== DIPO parameters ============================

        AliDIPO *DIPO = new AliDIPOv3("DIPO", "Dipole version 3");
    }

    if (iHALL)
    {
        //=================== HALL parameters ============================

        AliHALL *HALL = new AliHALLv3("HALL", "Alice Hall");
    }


    if (iFRAME)
    {
        //=================== FRAME parameters ============================

        AliFRAMEv2 *FRAME = new AliFRAMEv2("FRAME", "Space Frame");
    }

    if (iSHIL)
    {
        //=================== SHIL parameters ============================

        AliSHIL *SHIL = new AliSHILv3("SHIL", "Shielding Version 3");
    }


    if (iPIPE)
    {
        //=================== PIPE parameters ============================

        AliPIPE *PIPE = new AliPIPEv3("PIPE", "Beam Pipe");
    }
 
    if (iITS)
    {
        //=================== ITS parameters ============================
	AliITSvPPRasymmFMD *ITS  = new AliITSvPPRasymmFMD("ITS",
			   "ITS PPR detailed version with asymmetric services");
    }

    if (iTPC)
    {
        //============================ TPC parameters ===================
        AliTPC *TPC = new AliTPCv2("TPC", "Default");
    }


    if (iTOF) {
        //=================== TOF parameters ============================
	AliTOF *TOF = new AliTOFv6T0("TOF", "normal TOF");
    }


    if (iHMPID)
    {
        //=================== HMPID parameters ===========================
        AliHMPID *HMPID = new AliHMPIDv2("HMPID", "normal HMPID");

    }


    if (iZDC)
    {
        //=================== ZDC parameters ============================

        AliZDC *ZDC = new AliZDCv2("ZDC", "normal ZDC");
    }

    if (iTRD)
    {
        //=================== TRD parameters ============================

        AliTRD *TRD = new AliTRDv1("TRD", "TRD slow simulator");
    }

    if (iFMD)
    {
        //=================== FMD parameters ============================
	AliFMD *FMD = new AliFMDv1("FMD", "normal FMD");
   }

    if (iMUON)
    {
        //=================== MUON parameters ===========================
        // New MUONv1 version (geometry defined via builders)
        AliMUON *MUON = new AliMUONv1("MUON", "default");
    }
    //=================== PHOS parameters ===========================

    if (iPHOS)
    {
        AliPHOS *PHOS = new AliPHOSv1("PHOS", "IHEP");
    }


    if (iPMD)
    {
        //=================== PMD parameters ============================
        AliPMD *PMD = new AliPMDv1("PMD", "normal PMD");
    }

    if (iT0)
    {
        //=================== T0 parameters ============================
        AliT0 *T0 = new AliT0v1("T0", "T0 Detector");
    }

    if (iEMCAL)
    {
        //=================== EMCAL parameters ============================
        AliEMCAL *EMCAL = new AliEMCALv2("EMCAL", "SHISH_77_TRD1_2X2_FINAL_110DEG");
    }

     if (iACORDE)
    {
        //=================== ACORDE parameters ============================
        AliACORDE *ACORDE = new AliACORDEv0("ACORDE", "normal ACORDE");
    }

     if (iVZERO)
    {
        //=================== ACORDE parameters ============================
        AliVZERO *VZERO = new AliVZEROv7("VZERO", "normal VZERO");
    }

     AliLog::Message(AliLog::kInfo, "End of Config", "Config.C", "Config.C", "Config()"," Config.C", __LINE__);

}

Float_t EtaToTheta(Float_t arg){
  return (180./TMath::Pi())*2.*atan(exp(-arg));
}