#!/usr/bin/env python
from Gaudi.Configuration import *

from Configurables import k4DataSvc
dsvc = k4DataSvc("EventDataSvc")

from Configurables import RndmGenSvc, HepRndm__Engine_CLHEP__RanluxEngine_

seed = [10]
# rndmengine = HepRndm__Engine_CLHEP__RanluxEngine_() # The default engine in Gaudi
rndmengine = HepRndm__Engine_CLHEP__HepJamesRandom_("RndmGenSvc.Engine") # The default engine in Geant4
rndmengine.SetSingleton = True
rndmengine.Seeds = seed

rndmgensvc = RndmGenSvc("RndmGenSvc")
rndmgensvc.Engine = rndmengine.name()

#geometry_option = "CRD_o1_v01/CRD_o1_v01.xml"
geometry_option = "CRD_o1_v03/CRD_o1_v03-onlyVXD.xml"
#...

if not os.getenv("DETCRDROOT"):
    print("Can't find the geometry. Please setup envvar DETCRDROOT." )
    sys.exit(-1)

geometry_path = os.path.join(os.getenv("DETCRDROOT"), "compact", geometry_option)
if not os.path.exists(geometry_path):
    print("Can't find the compact geometry file: %s"%geometry_path)
    sys.exit(-1)

from Configurables import GeomSvc
geosvc = GeomSvc("GeomSvc")
geosvc.compact = geometry_path

##############################################################################
# Physics Generator
##############################################################################
from Configurables import GenAlgo
from Configurables import GtGunTool
from Configurables import StdHepRdr
from Configurables import SLCIORdr
from Configurables import HepMCRdr
from Configurables import GenPrinter
gun = GtGunTool("GtGunTool")
gun.Particles = ["mu-"]
#gun.Particles = ["nu_e"]
#gun.PositionXs = [0]
#gun.PositionYs = [0]
#gun.PositionZs = [0]
gun.EnergyMins = [100.] # GeV
gun.EnergyMaxs = [100.] # GeV
gun.ThetaMins  = [0]    # deg
gun.ThetaMaxs  = [180]  # deg
gun.PhiMins    = [0]    # deg
gun.PhiMaxs    = [360]  # deg
# stdheprdr = StdHepRdr("StdHepRdr")
# stdheprdr.Input = "/cefs/data/stdhep/CEPC250/2fermions/E250.Pbhabha.e0.p0.whizard195/bhabha.e0.p0.00001.stdhep"
# lciordr = SLCIORdr("SLCIORdr")
# lciordr.Input = "/cefs/data/stdhep/lcio250/signal/Higgs/E250.Pbbh.whizard195/E250.Pbbh_X.e0.p0.whizard195/Pbbh_X.e0.p0.00001.slcio"
# hepmcrdr = HepMCRdr("HepMCRdr")
# hepmcrdr.Input = "example_UsingIterators.txt"

genprinter = GenPrinter("GenPrinter")

genalg = GenAlgo("GenAlgo")
genalg.GenTools = ["GtGunTool"]
#genalg.GenTools = ["StdHepRdr"]
# genalg.GenTools = ["StdHepRdr", "GenPrinter"]
# genalg.GenTools = ["SLCIORdr", "GenPrinter"]
# genalg.GenTools = ["HepMCRdr", "GenPrinter"]

##############################################################################
# Detector Simulation
##############################################################################
from Configurables import DetSimSvc
detsimsvc = DetSimSvc("DetSimSvc")

from Configurables import DetSimAlg
detsimalg = DetSimAlg("DetSimAlg")
detsimalg.RandomSeeds = seed
# detsimalg.VisMacs = ["vis.mac"]
detsimalg.RunCmds = [
#    "/tracking/verbose 1",
]
detsimalg.AnaElems = [
    # example_anatool.name()
#    "ExampleAnaElemTool",
    "Edm4hepWriterAnaElemTool"
]
detsimalg.RootDetElem = "WorldDetElemTool"

# output
from Configurables import PodioOutput
out = PodioOutput("outputalg")
out.filename = "CRD-skewVXD-Sim-100.root"
out.outputCommands = ["keep *"]

# ApplicationMgr
from Configurables import ApplicationMgr
ApplicationMgr(
    TopAlg = [genalg, detsimalg, out],
    EvtSel = 'NONE',
    EvtMax = 500,
    ExtSvc = [rndmengine, rndmgensvc, dsvc, geosvc],
    OutputLevel=INFO
)