##############################################################################
# Copyright (c) 2013-2018, 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/spack/spack
# Please also see the NOTICE and LICENSE files 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 Nghttp2(AutotoolsPackage):
    """nghttp2 is an implementation of HTTP/2 and its header compression
       algorithm HPACK in C."""

    homepage = "https://nghttp2.org/"
    url      = "https://github.com/nghttp2/nghttp2/releases/download/v1.26.0/nghttp2-1.26.0.tar.gz"

    version('1.26.0', '83fa813b22bacbc6ea80dfb24847569f')

    depends_on('python@2.7:', type=('build', 'run'))
    depends_on('py-cython@0.19:', type=('build', 'run'))
    depends_on('py-setuptools', type=('build'))

    def setup_environment(self, spack_env, run_env):
        site_packages_dir = '/'.join(
            [self.spec.prefix.lib,
             ('python' + str(self.spec['python'].version.up_to(2))),
             'site-packages'])
        spack_env.prepend_path('PYTHONPATH', site_packages_dir)

    @run_before('install')
    def ensure_install_dir_exists(self):
        site_packages_dir = '/'.join(
            [self.spec.prefix.lib,
             ('python' + str(self.spec['python'].version.up_to(2))),
             'site-packages'])
        mkdirp(site_packages_dir)
