import FWCore.ParameterSet.Config as cms

# link to cards:
# https://github.com/cms-sw/genproductions/blob/master/bin/Powheg/production/2017/13TeV/Higgs/ttH_inclusive_hdamp_NNPDF31_13TeV_M125/ttH_inclusive_hdamp_NNPDF31_13TeV_M125.input
externalLHEProducer = cms.EDProducer("ExternalLHEProducer",
    args = cms.vstring('/cvmfs/cms.cern.ch/phys_generator/gridpacks/UL/13TeV/powheg/V2/ttH_slc7_amd64_gcc820_CMSSW_10_6_20_ttH_M125/v1/ttH_slc7_amd64_gcc820_CMSSW_10_6_20_ttH_M125.tgz'),
	nEvents = cms.untracked.uint32(5000),
    numberOfParameters = cms.uint32(1),
    outputFile = cms.string('cmsgrid_final.lhe'),
    scriptName = cms.FileInPath('GeneratorInterface/LHEInterface/data/run_generic_tarball_cvmfs.sh'),
    generateConcurrently = cms.untracked.bool(True)
)

import FWCore.ParameterSet.Config as cms
from Configuration.Generator.Pythia8CommonSettings_cfi import *
from Configuration.Generator.MCTunes2017.PythiaCP5Settings_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,
        pythia8CP5SettingsBlock,
        pythia8PowhegEmissionVetoSettingsBlock, 
        pythia8PSweightsSettingsBlock, 
        processParameters = cms.vstring(
            'POWHEG:nFinal = 3',
            '25:m0 = 125.0', 
            '25:onMode = off',  ## to switch off all the decay channels (see sec 8.1) 
            '25:addChannel = 1  1.00   103   22   333', ##phi(1020) is 333
            '333:onMode = off', 
            '333:onIfMatch = 321 -321'
            ),
        parameterSets = cms.vstring('pythia8CommonSettings',
                                    'pythia8CP5Settings',
                                    'pythia8PowhegEmissionVetoSettings',
                                    'pythia8PSweightsSettings',
                                    'processParameters'
                                    )
        )
                         )

ProductionFilterSequence = cms.Sequence(generator)