import FWCore.ParameterSet.Config as cms

externalLHEProducer = cms.EDProducer("ExternalLHEProducer",
    args = cms.vstring('/cvmfs/cms.cern.ch/phys_generator/gridpacks/UL/13TeV/powheg/V2/HJJ_HToZZTo2L2Nu_M125_13TeV/v1/HJJ_HToZZTo2L2Nu_M125_13TeV.tgz'),
    nEvents = cms.untracked.uint32(5000),
    numberOfParameters = cms.uint32(1),
    outputFile = cms.string('cmsgrid_final.lhe'),
    generateConcurrently = cms.untracked.bool(True),
    postGenerationCommand = cms.untracked.vstring('mergeLHE.py', '-i', 'thread*/cmsgrid_final.lhe', '-o', 'cmsgrid_final.lhe'),
    scriptName = cms.FileInPath('GeneratorInterface/LHEInterface/data/run_generic_tarball_cvmfs.sh')
)

# Link to cards:
# https://raw.githubusercontent.com/cms-sw/genproductions/69575e98a651b531cb2fb86415f532f44313d9a2/bin/Powheg/production/2017/13TeV/Higgs/HJJ_NNPDF31_13TeV/HJJ_NNPDF31_13TeV_M125.input
# https://raw.githubusercontent.com/cms-sw/genproductions/69575e98a651b531cb2fb86415f532f44313d9a2/bin/JHUGen/cards/decay/v7.3.5/2017/ZZ2l2nu_notaus.input

import FWCore.ParameterSet.Config as cms
from Configuration.Generator.Pythia8CommonSettings_cfi import *
from Configuration.Generator.MCTunes2017.PythiaCP5TuneDownSettings_cfi import *
from Configuration.Generator.Pythia8PowhegEmissionVetoSettings_cfi import *
from Configuration.Generator.PSweightsPythia.PythiaPSweightsSettings_cfi import *

generator = cms.EDFilter("Pythia8ConcurrentHadronizerFilter",
                         maxEventsToPrint = cms.untracked.int32(1),
                         pythiaPylistVerbosity = cms.untracked.int32(1),
                         filterEfficiency = cms.untracked.double(1.0),
                         pythiaHepMCVerbosity = cms.untracked.bool(False),
                         comEnergy = cms.double(13000.),
                         PythiaParameters = cms.PSet(
        pythia8CommonSettingsBlock,
        pythia8CP5TuneDownSettingsBlock,
        pythia8PowhegEmissionVetoSettingsBlock,
        pythia8PSweightsSettingsBlock,
        processParameters = cms.vstring(
            'POWHEG:nFinal = 3',   ## Number of final state particles
                                   ## (BEFORE THE DECAYS) in the LHE
                                   ## other than emitted extra parton
          ),
        parameterSets = cms.vstring('pythia8CommonSettings',
                                    'pythia8CP5TuneDownSettings',
                                    'pythia8PowhegEmissionVetoSettings',
                                    'pythia8PSweightsSettings',
                                    'processParameters'
                                    )
        )
                         )

ProductionFilterSequence = cms.Sequence(generator)


# Link to generator fragment:
# https://raw.githubusercontent.com/cms-sw/genproductions/69575e98a651b531cb2fb86415f532f44313d9a2/python/ThirteenTeV/Hadronizer/Hadronizer_TuneCP5Down_13TeV_powhegEmissionVeto_3p_LHE_pythia8_cff.py