#! /usr/bin/python -tt
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# 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 Library 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
#
# Copyright Red Hat Inc. 2010
#
# Author: James Antill <james.antill@redhat.com>
#
# Examples:
#
#  yum install-repos myrepo
#  yum upgrade-repos myrepo fedora blah
#  yum remove-repos  adobe*

import yum
import yum.misc as misc
from yum.plugins import PluginYumExit, TYPE_INTERACTIVE

requires_api_version = '2.5'
plugin_type = (TYPE_INTERACTIVE,)

def _repos2pkgnames(yb, repos):
    pkgnames = set()
    for repo in yb.repos.findRepos(repos):
        for pkg in repo.sack.returnPackages():
            pkgnames.add(pkg.name)
    return pkgnames

class IRCommand:
    def getNames(self):
        return ['install-repositories', 'install-repos']

    def getUsage(self):
        return "[repoid|reponame]"

    def getSummary(self):
        return "Install all packages from a list of repos"

    def doCheck(self, base, basecmd, extcmds):
        if base.conf.uid != 0:
            raise PluginYumExit('You need to be root to perform this command.')
        if not extcmds:
            raise PluginYumExit('Error: Need to pass a list of repos to %s' %
                                basecmd)

    def doCommand(self, base, basecmd, extcmds):
        txmbrs = []
        for pkgname in _repos2pkgnames(base, ",".join(extcmds)):
            txmbrs.extend(base.install(pattern=pkgname))
        if txmbrs:
            return 2, ['Package(s) to install']
        return 0, ['Nothing to do']

    def needTs(self, base, basecmd, extcmds):
        return True


class URCommand(IRCommand):
    def getNames(self):
        return ['upgrade-repositories', 'upgrade-repos',
                'update-repositories', 'update-repos']

    def getSummary(self):
        return "Upgrade all packages from a list of repos"

    def doCommand(self, base, basecmd, extcmds):
        txmbrs = []
        for pkgname in _repos2pkgnames(base, ",".join(extcmds)):
            txmbrs.extend(base.update(pattern=pkgname))
        if txmbrs:
            return 2, ['Package(s) to upgrade']
        return 0, ['Nothing to do']


class RRCommand(IRCommand):
    def getNames(self):
        return ['remove-repositories', 'remove-repos']

    def getSummary(self):
        return "Remove all packages from a list of repos"

    def doCommand(self, base, basecmd, extcmds):
        txmbrs = []
        for pkgname in _repos2pkgnames(base, ",".join(extcmds)):
            txmbrs.extend(base.remove(pattern=pkgname))
        if txmbrs:
            return 2, ['Package(s) to remove']
        return 0, ['Nothing to do']

# Should do downgrade and distro-sync

def config_hook(conduit):
    '''
    Yum Plugin Config Hook: 
    And the '*-repos' commands.
    '''
    conduit.registerCommand(IRCommand())
    conduit.registerCommand(URCommand())
    conduit.registerCommand(RRCommand())