#

# Copyright (C) 2016 Red Hat, Inc.

#

# This copyrighted material is made available to anyone wishing to use,

# modify, copy, or redistribute it subject to the terms and conditions of

# the GNU General Public License v.2, or (at your option) any later version.

# This program is distributed in the hope that it will be useful, but WITHOUT

# ANY WARRANTY expressed or implied, including the implied warranties 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, write to the

# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

# 02110-1301, USA.  Any Red Hat trademarks that are incorporated in the

# source code or documentation are not subject to the GNU General Public

# License and may only be used or replicated with the express permission of

# Red Hat, Inc.

#

from __future__ import absolute_import

from __future__ import unicode_literals

from dnf.i18n import _

from dnf.cli import commands

import dnf.util

import logging

logger = logging.getLogger("dnf")

class SwapCommand(commands.Command):

    """A class containing methods needed by the cli to execute the swap command.

    """

    aliases = ('swap',)

    summary = _('run an interactive {prog} mod for remove and install one spec').format(

        prog=dnf.util.MAIN_PROG_UPPER)

    @staticmethod

    def set_argparser(parser):

        parser.add_argument('remove_spec', action="store", help=_('The specs that will be removed'))

        parser.add_argument('install_spec', action="store", help=_(

            'The specs that will be installed'))

    def configure(self):

        demands = self.cli.demands

        demands.sack_activation = True

        demands.available_repos = True

        demands.resolving = True

        demands.root_user = True

        commands._checkGPGKey(self.base, self.cli)

        commands._checkEnabledRepo(self.base, [self.opts.install_spec])

    def _perform(self, cmd_str, spec):

        cmd_cls = self.cli.cli_commands.get(cmd_str)

        if cmd_cls is not None:

            cmd = cmd_cls(self.cli)

            self.cli.optparser.parse_command_args(cmd, [cmd_str, spec])

            cmd.run()

    def run(self):

        self._perform('remove', self.opts.remove_spec)

        self._perform('install', self.opts.install_spec)