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# Copyright 2013-2021 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)


import tarfile

from spack import *


class Minighost(MakefilePackage):
    """Proxy Application. A Finite Difference proxy
       application which implements a difference stencil
       across a homogenous three dimensional domain.
    """

    homepage = "https://mantevo.org"
    url      = "http://downloads.mantevo.org/releaseTarballs/miniapps/MiniGhost/miniGhost_1.0.1.tar.gz"

    tags = ['proxy-app']

    version('1.0.1', sha256='713f305559d892923cde0ad3cbc53c7cefc52a684f65275ccc9fb0b1d049cccc')

    variant('mpi', default=True, description='Enable MPI Support')

    depends_on('mpi', when='+mpi')

    parallel = False

    @property
    def build_targets(self):
        targets = ['--directory=miniGhost_ref']

        if '+mpi' in self.spec:
            targets.append('PROTOCOL=-D_MG_MPI')
            targets.append('FC={0}'.format(self.spec['mpi'].mpif77))
            # CC is only used for linking, use it to pull in the right f77 libs
            targets.append('CC={0}'.format(self.spec['mpi'].mpif77))
        else:
            targets.append('PROTOCOL=-D_MG_SERIAL')
            targets.append('FC=f77')
            targets.append('CC=cc')

        if '%gcc' in self.spec:
            targets.append('COMPILER_SUITE=gnu')
            targets.append('LIBS=-lm -lgfortran')
        elif '%cce' in self.spec:
            targets.append('COMPILER_SUITE=cray')
        elif '%intel' in self.spec:
            targets.append('COMPILER_SUITE=intel')
        elif '%pgi' in self.spec:
            targets.append('COMPILER_SUITE=pgi')

        return targets

    def edit(self, spec, prefix):
        inner_tar = tarfile.open(
            'miniGhost_ref_{0}.tar.gz'.format(self.version.up_to(3)))
        inner_tar.extractall()

    def install(self, spec, prefix):
        # Manual Installation
        mkdirp(prefix.bin)
        mkdirp(prefix.doc)

        install('miniGhost_ref/miniGhost.x', prefix.bin)
        install('miniGhost_ref/default-settings.h', prefix.bin)

        if '+mpi' in spec:
            install('miniGhost_ref/runtest.mpi', prefix.bin)
            install('miniGhost_ref/runtest.mpi.ds', prefix.bin)
        else:
            install('miniGhost_ref/runtest.serial', prefix.bin)

        install('README', prefix.doc)