import FWCore.ParameterSet.Config as cms

# link to card:
# https://github.com/cms-sw/genproductions/blob/master/bin/Powheg/production/2017/13TeV/VBF_H_NNPDF31_13TeV/VBF_H_NNPDF31_13TeV_template.input

externalLHEProducer = cms.EDProducer("ExternalLHEProducer",
    args = cms.vstring('/cvmfs/cms.cern.ch/phys_generator/gridpacks/2017/13TeV/powheg/V2/VBF_H_NNPDF31_13TeV_M125/v1/VBF_H_NNPDF31_13TeV_M125_slc6_amd64_gcc630_CMSSW_9_3_0.tgz'),
    nEvents = cms.untracked.uint32(5000),
    generateConcurrently = cms.untracked.bool(True),
    numberOfParameters = cms.uint32(1),
    outputFile = cms.string('cmsgrid_final.lhe'),
    scriptName = cms.FileInPath('GeneratorInterface/LHEInterface/data/run_generic_tarball_cvmfs.sh')
)

from Configuration.Generator.Pythia8PowhegEmissionVetoSettings_cfi import *
from Configuration.Generator.Pythia8CommonSettings_cfi import *
from Configuration.Generator.MCTunes2017.PythiaCP5Settings_cfi import *
from Configuration.Generator.Pythia8aMCatNLOSettings_cfi import *
from Configuration.Generator.PSweightsPythia.PythiaPSweightsSettings_cfi import *

generator = cms.EDFilter("Pythia8ConcurrentHadronizerFilter",
                         pythiaPylistVerbosity = cms.untracked.int32(1),
                         filterEfficiency = cms.untracked.double(1.0),
                         pythiaHepMCVerbosity = cms.untracked.bool(False),
                         comEnergy = cms.double(13000.),
                         
                         PythiaParameters = cms.PSet(
					        pythia8CommonSettingsBlock,
        					pythia8CP5SettingsBlock,
        					pythia8PowhegEmissionVetoSettingsBlock,  
        					pythia8PSweightsSettingsBlock,
        					processParameters = cms.vstring(
					            'POWHEG:nFinal = 3',
            					'25:onMode = off', # turn OFF all H decays
            					'25:onIfMatch = 15 -15', # turn ON H->tautau      
            					'25:m0 = 125.0',
            					'TauDecays:mode = 2', # force taus from TauDecays:tauMother into an uncorrelated decay
            					'TauDecays:tauMother = 25',
            					'SpaceShower:dipoleRecoil = on'
            				),
        					parameterSets = cms.vstring('pythia8CommonSettings',
                                    'pythia8CP5Settings',
                                    'pythia8PowhegEmissionVetoSettings',
                                    'pythia8PSweightsSettings',
                                    'processParameters'
                            )
        				)
)

ProductionFilterSequence = cms.Sequence(generator)