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# Copyright 2013-2023 Lawrence Livermore National Security, LLC and other
# Spack Project Developers. See the top-level COPYRIGHT file for details.
#
# SPDX-License-Identifier: (Apache-2.0 OR MIT)

from spack.package import *


class Whizard(AutotoolsPackage):
    """WHIZARD is a program system designed for the efficient calculation
    of multi-particle scattering cross sections
    and simulated event samples."""

    homepage = "whizard.hepforge.org"
    urls = [
        "https://launchpad.net/whizard/3.1.x/3.1.2/+download/whizard-3.1.2.tar.gz",
        "https://whizard.hepforge.org/downloads/?f=whizard-2.8.3.tar.gz",
    ]
    git = "https://gitlab.tp.nt.uni-siegen.de/whizard/public.git"

    tags = ["hep"]

    maintainers("vvolkl")

    license("GPL-2.0-or-later")

    version("master", branch="master")
    version("3.1.2", sha256="4f706f8ef02a580ae4dba867828691dfe0b3f9f9b8982b617af72eb8cd4c6fa3")
    version("3.1.1", sha256="dd48e4e39b8a4990be47775ec6171f89d8147cb2e9e293afc7051a7dbc5a23ef")
    version("3.1.0", sha256="9dc5e6d1a25d2fc708625f85010cb81b63559ff02cceb9b35024cf9f426c0ad9")
    version("3.0.3", sha256="20f2269d302fc162a6aed8e781b504ba5112ef0711c078cdb08b293059ed67cf")
    version("3.0.2", sha256="f1db92cd95a0281f6afbf4ac32ab027670cb97a57ad8f5139c0d1f61593d66ec")
    version("3.0.1", sha256="1463abd6c50ffe72029abc6f5a7d28ec63013852bfe5914cb464b58202c1437c")
    version(
        "3.0.0_alpha", sha256="4636e5a10350bb67ccc98cd105bc891ea04f3393c2420f81be3d21240be20009"
    )
    version("2.8.5", sha256="0f633e5620aa7dd50336b492e8a76bfae15b15943ea842010346ad7610818ecd")
    version("2.8.4", sha256="49893f077484470934a9d6e1545bbda7d398076568bceda00880d58132f26432")
    version("2.8.3", sha256="96a9046682d4b992b477eb96d561c3db789207e1049b60c9bd140db40eb1e5d7")
    version("2.8.2", sha256="32c9be342d01b3fc6f947fddce74bf2d81ece37fb39bca1f37778fb0c07e2568")
    version("2.8.1", sha256="0c759ce0598e25f38e04659f745c5963d238c4b5c12209f16449b6c0bc6dc64e")
    version("2.8.0", sha256="3b5175eafa879d1baca20237d18fb2b18bee89631e73ada499de9c082d009696")

    variant(
        "hepmc",
        default="3",
        description="builds with hepmc 2/3",
        values=("off", "2", "3"),
        multi=False,
    )

    variant("pythia8", default=True, description="builds with pythia8")
    variant("fastjet", default=False, description="builds with fastjet")
    variant("lcio", default=False, description="builds with lcio")
    variant("lhapdf", default=False, description="builds with fastjet")
    variant("openmp", default=False, description="builds with openmp")
    variant("openloops", default=False, description="builds with openloops")
    variant("latex", default=False, description="data visualization with latex")

    depends_on("libtirpc", type=("build", "link", "run"))
    depends_on("ocaml@4.02.3:", type="build", when="@3:")
    depends_on("ocaml@4.02.3:~force-safe-string", type="build", when="@:2")
    depends_on("hepmc", when="hepmc=2")
    depends_on("hepmc3", when="hepmc=3")
    depends_on("lcio", when="+lcio")
    depends_on("pythia8", when="+pythia8")
    depends_on("lhapdf", when="+lhapdf")
    depends_on("fastjet", when="+fastjet")
    depends_on(
        "openloops@2.0.0: +compile_extra num_jobs=1 " "processes=eett,eevvjj,ppllj,tbw",
        when="+openloops",
    )
    depends_on("texlive", when="+latex")
    depends_on("zlib-api")

    # Fix for https://github.com/key4hep/key4hep-spack/issues/71
    # NOTE: This will become obsolete in a future release of whizard, so once
    # that happens, this needs to be adapted with a when clause
    patch("parallel_build_fix.patch", when="@3:")
    patch("parallel_build_fix_2.8.patch", when="@2.8")
    # Make sure that the patch actually has an effect by running autoreconf
    force_autoreconf = True
    # Which then requires the following build dependencies
    depends_on("autoconf", type="build")
    depends_on("automake", type="build")
    depends_on("libtool", type="build")
    depends_on("pkgconfig", type="build")

    conflicts(
        "%gcc@:5.0",
        msg="gfortran needs to support Fortran 2008. For more detailed information see https://whizard.hepforge.org/compilers.html",
    )
    conflicts(
        "%gcc@6.5.0",
        msg="Due to severe regressions, gfortran 6.5.0 can not be used. See https://whizard.hepforge.org/compilers.html",
    )

    conflicts(
        "%intel@:17",
        msg="The fortran compiler needs to support Fortran 2008. For more detailed information see https://whizard.hepforge.org/compilers.html",
    )

    def setup_build_environment(self, env):
        # whizard uses some environment variables to detect dependencies at
        # configure time if they are not installed to standard system prefixes
        if self.spec.satisfies("+lcio"):
            env.set("LCIO", self.spec["lcio"].prefix)
        if self.spec.satisfies("hepmc=2"):
            env.set("HEPMC_DIR", self.spec["hepmc"].prefix)
        if self.spec.satisfies("hepmc=3"):
            env.set("HEPMC_DIR", self.spec["hepmc3"].prefix)
        if self.spec.satisfies("+openloops"):
            env.set("OPENLOOPS_DIR", self.spec["openloops"].prefix)

        # whizard uses the compiler during runtime,
        # and seems incompatible with
        # filter_compiler_wrappers, thus the
        # actual compilers need to be used to build
        env.set("CC", self.compiler.cc)
        env.set("CXX", self.compiler.cxx)
        env.set("FC", self.compiler.fc)
        env.set("F77", self.compiler.fc)

    def configure_args(self):
        spec = self.spec
        enable_hepmc = "no" if "hepmc=off" in spec else "yes"
        args = [
            f"TIRPC_CFLAGS=-I{spec['libtirpc'].prefix.include.tirpc}",
            f"TIRPC_LIBS=-L{spec['libtirpc'].prefix.lib} -ltirpc",
            f"--enable-hepmc={enable_hepmc}",
            # todo: hoppet
            # todo: recola
            # todo: looptools
            # todo: gosam
            # todo: pythia6
        ]
        args.extend(self.enable_or_disable("fastjet"))
        args.extend(self.enable_or_disable("pythia8"))
        args.extend(self.enable_or_disable("lcio"))
        args.extend(self.enable_or_disable("lhapdf"))
        args.extend(self.enable_or_disable("openloops"))

        if "+openloops" in spec:
            args.append(f"--with-openloops={spec['openloops'].prefix}")
        if "+openmp" not in spec:
            args.append("--disable-openmp")
        return args

    def url_for_version(self, version):
        major = str(version[0])
        minor = str(version[1])
        patch = str(version[2])
        if len(version) == 4:
            url = "https://whizard.hepforge.org/downloads/?f=whizard-%s.%s.%s_%s.tar.gz" % (
                major,
                minor,
                patch,
                version[3],
            )
        else:
            url = "https://whizard.hepforge.org/downloads/?f=whizard-%s.%s.%s.tar.gz" % (
                major,
                minor,
                patch,
            )
        return url