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# Copyright (C) 2007-2012 by the Free Software Foundation, Inc.
#
# This file is part of GNU Mailman.
#
# GNU Mailman 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 3 of the License, or (at your option)
# any later version.
#
# GNU Mailman 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
# GNU Mailman.  If not, see <http://www.gnu.org/licenses/>.

"""The news moderation rule."""

from __future__ import absolute_import, print_function, unicode_literals

__metaclass__ = type
__all__ = [
    'ModeratedNewsgroup',
    ]


from zope.interface import implementer

from mailman.core.i18n import _
from mailman.interfaces.nntp import NewsgroupModeration
from mailman.interfaces.rules import IRule



@implementer(IRule)
class ModeratedNewsgroup:
    """The news moderation rule."""

    name = 'news-moderation'
    description = _(
        """Match all messages posted to a mailing list that gateways to a
        moderated newsgroup.
        """)
    record = True

    def check(self, mlist, msg, msgdata):
        """See `IRule`."""
        return mlist.news_moderation == NewsgroupModeration.moderated