# 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)

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",
                        "10.14": "mojave"}

        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
