# Copyright 2013-2019 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 import *
from spack.error import SpackError


def class_validator(pkg_name, variant_name, values):
    values = int(values[0])
    if values < 1 or values > 6:
        error_msg = ("class: Choose one of the following:\n"
                     "1  - 8x8x8x32 (default MPI config: 1x1x1)\n"
                     "2  - 32x32x32x32 (default MPI config: 4x4x4)\n"
                     "3  - 64x64x64x32 (default MPI config: 8x8x8)\n"
                     "4  - 160x160x160x160 (default MPI config: 20x20x20)\n"
                     "5  - 256x256x256x256 (default MPI config: 32x32x32)\n"
                     "6  - 192x192x192x192 (default MPI config: 24x24x24)")
        raise SpackError(error_msg)


class CcsQcd(MakefilePackage):
    """This program benchmarks the performance of a linear equation solver
       with a large sparse coefficient matrix appering in a lattice QCD
       probrem. Lattice QCD describes the property of protons, neutrons and
       neucleons in terms of more fundamental interacting elementary particles
       gluon and quarks."""

    homepage = "https://github.com/fiber-miniapp/ccs-qcd"
    git      = "https://github.com/fiber-miniapp/ccs-qcd.git"

    version('master', branch='master')
    version('1.2.1', commit='d7c6b6923f35a824e997ba8db5bd12dc20dda45c')

    variant('class', values=int, default=1,
            description='This miniapp has five problem classes, for which the'
            ' first three are relatively small problems just for testing'
            ' this miniapp itself. The remaining two are the target problem'
            ' sizes for the HPCI FS evaluation.',
            multi=False, validator=class_validator)

    depends_on('mpi')

    parallel = False

    def edit(self, spec, prefix):
        if '%fj' in spec:
            filter_file('mpifrtpx', spec['mpi'].mpifc, './src/make.fx10.inc')
            filter_file('mpifccpx', spec['mpi'].mpicc, './src/make.fx10.inc')
        else:
            filter_file('mpif90', spec['mpi'].mpifc, './src/make.gfortran.inc')
            filter_file('mpicc', spec['mpi'].mpicc, './src/make.gfortran.inc')

    def build(self, spec, prefix):
        ccs_class = 'CLASS=' + spec.variants['class'].value
        with working_dir('src'):
            if '%fj' in spec:
                make('MAKE_INC=make.fx10.inc', ccs_class)
            else:
                make('MAKE_INC=make.gfortran.inc', ccs_class)

    def install(self, spec, prefix):
        mkdirp(prefix.bin)
        install('./src/ccs_qcd_solver_bench_class' +
                spec.variants['class'].value, prefix.bin)