##############################################################################
# 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
##############################################################################
import platform as py_platform

from spack.architecture import OperatingSystem
from spack.version import Version


# FIXME: store versions inside OperatingSystem as a Version instead of string
def macos_version():
    """temporary workaround to return a macOS version as a Version object
    """
    return Version('.'.join(py_platform.mac_ver()[0].split('.')[:2]))


class MacOs(OperatingSystem):
    """This class represents the macOS operating system. This will be
    auto detected using the python platform.mac_ver. The macOS
    platform will be represented using the major version operating
    system name, i.e el capitan, yosemite...etc.
    """

    def __init__(self):
        """ Autodetects the mac version from a dictionary. Goes back as
            far as 10.6 snowleopard. If the user has an older mac then
            the version will just be a generic mac_os.
        """
        mac_releases = {'10.6': "snowleopard",
                        "10.7": "lion",
                        "10.8": "mountainlion",
                        "10.9": "mavericks",
                        "10.10": "yosemite",
                        "10.11": "elcapitan",
                        "10.12": "sierra",
                        "10.13": "highsierra"}

        mac_ver = '.'.join(py_platform.mac_ver()[0].split('.')[:2])
        name = mac_releases.get(mac_ver, "macos")
        super(MacOs, self).__init__(name, mac_ver)

    def __str__(self):
        return self.name
