# Copyright (C) 1998-2009 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/>.


"""Mixin class with list-digest handling methods and settings."""

import os
import errno

from mailman import Errors
from mailman import Utils
from mailman.Handlers import ToDigest
from mailman.configuration import config
from mailman.i18n import _



class Digester:
    def send_digest_now(self):
        # Note: Handler.ToDigest.send_digests() handles bumping the digest
        # volume and issue number.
        digestmbox = os.path.join(self.fullpath(), 'digest.mbox')
        try:
            try:
                mboxfp = None
                # See if there's a digest pending for this mailing list
                if os.stat(digestmbox).st_size > 0:
                    mboxfp = open(digestmbox)
                    ToDigest.send_digests(self, mboxfp)
                    os.unlink(digestmbox)
            finally:
                if mboxfp:
                    mboxfp.close()
        except OSError, e:
            if e.errno <> errno.ENOENT:
                raise
            # List has no outstanding digests
            return False
        return True

    def bump_digest_volume(self):
        self.volume += 1
        self.next_digest_number = 1