# vi: ts=4 expandtab
#
#    Copyright (C) 2012 Canonical Ltd.
#    Copyright (C) 2012 Hewlett-Packard Development Company, L.P.
#    Copyright (C) 2012 Yahoo! Inc.
#
#    Author: Scott Moser <scott.moser@canonical.com>
#    Author: Juerg Haefliger <juerg.haefliger@hp.com>
#    Author: Joshua Harlow <harlowja@yahoo-inc.com>
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU General Public License version 3, as
#    published by the Free Software Foundation.
#
#    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
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.

import contextlib

from cloudinit import importer


class Distro(object):
    def __init__(self, cloud):
        self.cloud = cloud

    def install_packages(self, pkglist):
        raise NotImplementedError()

    def apply_network(self, settings):
        raise NotImplementedError()


def fetch(cfg, cloud):
    sys_info = cfg.get('system_info', {})
    distro = sys_info.get('distro', 'ubuntu')
    mod_name = "%s.%s" % (__name__, distro)
    mod = importer.import_module(mod_name)
    distro_cls = getattr(mod, 'Distro')
    return distro_cls(cloud)