#! @PYTHON@
#
# Copyright (C) 1998-2016 by the Free Software Foundation, Inc.
#
# 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 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.

"""Dispatch digests for lists w/pending messages and digest_send_periodic set.

Usage: %(PROGRAM)s [options]

Options:
    -h / --help
        Print this message and exit.

    -l listname
    --listname=listname
        Send the digest for the given list only, otherwise the digests for all
        lists are sent out.  May be repeated to do multiple lists.

    -e listname
    --exceptlist listname
        Don't send the digest for the given list.  May be repeated to skip
        multiple lists.
"""

import os
import sys
import getopt

import paths
from Mailman import mm_cfg
from Mailman import Utils
from Mailman import MailList
from Mailman.i18n import _

# Work around known problems with some RedHat cron daemons
import signal
signal.signal(signal.SIGCHLD, signal.SIG_DFL)

PROGRAM = sys.argv[0]



def usage(code, msg=''):
    if code:
        fd = sys.stderr
    else:
        fd = sys.stdout
    print >> fd, _(__doc__)
    if msg:
        print >> fd, msg
    sys.exit(code)



def main():
    try:
        opts, args = getopt.getopt(sys.argv[1:], 'hl:e:',
                                   ['help', 'listname=', 'exceptlist='])
    except getopt.error, msg:
        usage(1, msg)

    if args:
        usage(1)

    exceptlists = []
    listnames = []
    for opt, arg in opts:
        if opt in ('-h', '--help'):
            usage(0)
        elif opt in ('-l', '--listname'):
            listnames.append(arg)
        elif opt in ('-e', '--exceptlist'):
            exceptlists.append(arg)

    if not listnames:
        listnames = Utils.list_names()
    for listname in exceptlists:
        try:
            listnames.remove(listname)
        except ValueError:
            pass

    for listname in listnames:
        mlist = MailList.MailList(listname, lock=0)
        if mlist.digest_send_periodic:
            mlist.Lock()
            try:
                try:
                    mlist.send_digest_now()
                    mlist.Save()
                # We are unable to predict what exception may occur in digest
                # processing and we don't want to lose the other digests, so
                # we catch everything.
                except Exception, errmsg:
                    print >> sys.stderr, \
                      'List: %s: problem processing %s:\n%s' % \
                        (listname,
                         os.path.join(mlist.fullpath(), 'digest.mbox'),
                         errmsg)
            finally:
                mlist.Unlock()



if __name__ == '__main__':
    main()