import FWCore.ParameterSet.Config as cms
import os

source = cms.Source("EmptySource")

_generator = cms.EDFilter("SherpaGeneratorFilter",
  maxEventsToPrint = cms.int32(0),
  filterEfficiency = cms.untracked.double(1.0),
  crossSection = cms.untracked.double(-1),
  SherpaProcess = cms.string('LNuAJJ_MJJ120'),
  SherpackLocation = cms.string('/cvmfs/cms.cern.ch/phys_generator/gridpacks/slc7_amd64_gcc700/13TeV/sherpa/2.2.11/LNuAJJ_MJJ120'),
  SherpackChecksum = cms.string('c2de0e7ef0b2f3f9766ff153a3ff657b'),
  FetchSherpack = cms.bool(True),
  SherpaPath = cms.string('./'),
  SherpaPathPiece = cms.string('./'),
  SherpaResultDir = cms.string('Result'),
  SherpaDefaultWeight = cms.double(1.0),
  SherpaParameters = cms.PSet(parameterSets = cms.vstring(
                             "MPI_Cross_Sections",
                             "Run"),
                              MPI_Cross_Sections = cms.vstring(
				" MPIs in Sherpa, Model = Amisic:",
				" semihard xsec = 39.6416 mb,",
				" non-diffractive xsec = 17.0318 mb with nd factor = 0.3142."
                                                  ),
                              Run = cms.vstring(
				" (run){",
				" EVENTS 10K; ERROR 0.99;",
				" MAX_PROPER_LIFETIME: 10.0",
				" HEPMC_TREE_LIKE: 1",
				" HEPMC_USE_NAMED_WEIGHTS=1",
				" PRETTY_PRINT: Off",
				" OVERWEIGHT_THRESHOLD: 10",
				" EXCLUSIVE_CLUSTER_MODE 1;",
				" FSF:=1.; RSF:=1.; QSF:=1.;",
				" SCALES STRICT_METS{FSF*MU_F2}{RSF*MU_R2}{QSF*MU_Q2};",
				" SCALE_VARIATIONS 0.25,0.25 0.25,1. 1.,0.25 1.,1. 1.,4. 4.,1. 4.,4.;",
				" QCUT:=20.;",
				" ME_SIGNAL_GENERATOR Comix;",
				" EVENT_GENERATION_MODE PartiallyUnweighted;",
				" # speed and neg weight fraction improvements",
				" CSS_CSMODE 1;",
				" BEAM_1 2212; BEAM_ENERGY_1 = 6500.;",
				" BEAM_2 2212; BEAM_ENERGY_2 = 6500.;",
				" PDF_LIBRARY LHAPDFSherpa;",
				" PDF_SET NNPDF30_nnlo_as_0118;",
				" PDF_VARIATIONS NNPDF30_nnlo_as_0118[all];",
				"}(run)",
				" (processes){",
				" Process 93 93 -> 90 91 22 93 93;",
				" Order (0,5); CKKW sqr(QCUT/E_CMS);",
				" ME_Generator Comix;",
				" End process;",
				"}(processes)",
				" (selector){",
				" PT 93 20. E_CMS",
				" PT 22 10. E_CMS",
				" Mass 90 91 1. E_CMS",
				" DeltaR 22 93 0.05 10000.",
				" DeltaR 22 90 0.05 10000.",
				" NJetFinder 2 30. 0. 0.4 -1;",
				" Mass 93 93 120. E_CMS",
				" DeltaR 93 93 0.3 10000.",
				"}(selector)"
                                                  ),
                             )
)

from GeneratorInterface.Core.ExternalGeneratorFilter import ExternalGeneratorFilter
generator = ExternalGeneratorFilter(_generator)
ProductionFilterSequence = cms.Sequence(generator)