##############################################################################
# Copyright (c) 2013-2016, Lawrence Livermore National Security, LLC.
# Produced at the Lawrence Livermore National Laboratory.
#
# This file is part of Spack.
# Created by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
# LLNL-CODE-647188
#
# For details, see https://github.com/llnl/spack
# Please also see the LICENSE file for our notice and the LGPL.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License (as
# published by the Free Software Foundation) version 2.1, February 1999.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
# conditions of the GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
##############################################################################
from spack import *


class Meep(Package):
    """Meep (or MEEP) is a free finite-difference time-domain (FDTD) simulation
    software package developed at MIT to model electromagnetic systems."""

    homepage = "http://ab-initio.mit.edu/wiki/index.php/Meep"

    version('1.3',   '18a5b9e18008627a0411087e0bb60db5')
    version('1.2.1', '9be2e743c3a832ae922de9d955d016c5')
    version('1.1.1', '415e0cd312b6caa22b5dd612490e1ccf')

    variant('blas',    default=True,  description='Enable BLAS support')
    variant('lapack',  default=True,  description='Enable LAPACK support')
    variant('harminv', default=True,  description='Enable Harminv support')
    variant('guile',   default=True,  description='Enable Guilde support')
    variant('libctl',  default=True,  description='Enable libctl support')
    variant('mpi',     default=True,  description='Enable MPI support')
    variant('hdf5',    default=True,  description='Enable HDF5 support')
    variant('gsl',     default=False, description='Build with GSL (only necessary for testing)')

    depends_on('blas',        when='+blas')
    depends_on('lapack',      when='+lapack')
    depends_on('harminv',     when='+harminv')
    depends_on('guile',       when='+guile')
    depends_on('libctl@3.2:', when='+libctl')
    depends_on('mpi',         when='+mpi')
    depends_on('hdf5',        when='+hdf5')
    depends_on('hdf5+mpi',    when='+hdf5+mpi')
    depends_on('gsl',         when='+gsl')

    def url_for_version(self, version):
        base_url = "http://ab-initio.mit.edu/meep"
        if version > Version('1.1.1'):
            return "{0}/meep-{1}.tar.gz".format(base_url, version)
        else:
            return "{0}/old/meep-{1}.tar.gz".format(base_url, version)

    def install(self, spec, prefix):
        # Must be compiled with -fPIC for py-meep
        env['CFLAGS']   = '-fPIC'
        env['CXXFLAGS'] = '-fPIC'
        env['FFLAGS']   = '-fPIC'

        config_args = ['--prefix={0}'.format(prefix)]

        if '+blas' in spec:
            config_args.append('--with-blas={0}'.format(
                spec['blas'].prefix.lib))
        else:
            config_args.append('--without-blas')

        if '+lapack' in spec:
            config_args.append('--with-lapack={0}'.format(
                spec['lapack'].prefix.lib))
        else:
            config_args.append('--without-lapack')

        if '+libctl' in spec:
            config_args.append('--with-libctl={0}'.format(
                spec['libctl'].prefix))
        else:
            config_args.append('--without-libctl')

        if '+mpi' in spec:
            config_args.append('--with-mpi')
        else:
            config_args.append('--without-mpi')

        if '+hdf5' in spec:
            config_args.append('--with-hdf5')
        else:
            config_args.append('--without-hdf5')

        configure(*config_args)

        make()

        # aniso_disp test fails unless installed with harminv
        # near2far test fails unless installed with gsl
        if '+harminv' in spec and '+gsl' in spec:
            # Most tests fail when run in parallel
            # 2D_convergence tests still fails to converge for unknown reasons
            make('check', parallel=False)

        make('install')