# 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 *


class Silo(AutotoolsPackage):
    """Silo is a library for reading and writing a wide variety of scientific
       data to binary, disk files."""

    homepage = "http://wci.llnl.gov/simulation/computer-codes/silo"
    url      = "https://wci.llnl.gov/content/assets/docs/simulation/computer-codes/silo/silo-4.10.2/silo-4.10.2.tar.gz"

    version('4.10.2', '9ceac777a2f2469ac8cef40f4fab49c8', preferred=True)
    version('4.10.2-bsd', '60fef9ce373daf1e9cc8320cfa509bc5',
            url="https://wci.llnl.gov/content/assets/docs/simulation/computer-codes/silo/silo-4.10.2/silo-4.10.2-bsd.tar.gz")
    version('4.9', 'a83eda4f06761a86726e918fc55e782a')
    version('4.8', 'b1cbc0e7ec435eb656dc4b53a23663c9')

    variant('fortran', default=True, description='Enable Fortran support')
    variant('shared', default=True, description='Build shared libraries')
    variant('silex', default=False,
            description='Builds Silex, a GUI for viewing Silo files')
    variant('pic', default=True,
            description='Produce position-independent code (for shared libs)')
    variant('mpi', default=True,
            description='Compile with MPI Compatibility')

    depends_on('hdf5~mpi', when='~mpi')
    depends_on('mpi', when='+mpi')
    depends_on('hdf5+mpi', when='+mpi')
    depends_on('qt', when='+silex')
    depends_on('zlib')

    patch('remove-mpiposix.patch', when='@4.8:4.10.2')

    def flag_handler(self, name, flags):
        if name == 'ldflags' and self.spec['hdf5'].satisfies('~shared'):
            flags.append('-ldl')
        return (flags, None, None)

    def configure_args(self):
        spec = self.spec
        config_args = [
            '--with-hdf5=%s,%s' % (spec['hdf5'].prefix.include,
                                   spec['hdf5'].prefix.lib),
            '--with-zlib=%s,%s' % (spec['zlib'].prefix.include,
                                   spec['zlib'].prefix.lib),
            '--enable-install-lite-headers',
            '--enable-fortran' if '+fortran' in spec else '--disable-fortran',
            '--enable-silex' if '+silex' in spec else '--disable-silex',
            '--enable-shared' if '+shared' in spec else '--disable-shared',
        ]

        if '+silex' in spec:
            config_args.append('--with-Qt-dir=%s' % spec['qt'].prefix)

        if '+pic' in spec:
            config_args += [
                'CFLAGS={0}'.format(self.compiler.pic_flag),
                'CXXFLAGS={0}'.format(self.compiler.pic_flag),
                'FCFLAGS={0}'.format(self.compiler.pic_flag)]

        if '+mpi' in spec:
            config_args.append('CC=%s' % spec['mpi'].mpicc)
            config_args.append('CXX=%s' % spec['mpi'].mpicxx)
            config_args.append('FC=%s' % spec['mpi'].mpifc)

        return config_args
