#!/usr/bin/env python3
# -*- coding: utf-8 -*-

"""
    Slixmpp: The Slick XMPP Library
    Copyright (C) 2017 Mathieu Pasquet
    This file is part of Slixmpp.

    See the file LICENSE for copying permission.
"""

import logging
from getpass import getpass
from argparse import ArgumentParser

import slixmpp
from slixmpp.exceptions import XMPPError

log = logging.getLogger(__name__)


class MAM(slixmpp.ClientXMPP):

    """
    A basic client fetching mam archive messages
    """

    def __init__(self, jid, password, remote_jid, start):
        slixmpp.ClientXMPP.__init__(self, jid, password)
        self.remote_jid = remote_jid
        self.start_date = start

        self.add_event_handler("session_start", self.start)

    async def start(self, *args):
        """
        Fetch mam results for the specified JID.
        Use RSM to paginate the results.
        """
        results = self.plugin['xep_0313'].retrieve(jid=self.remote_jid, iterator=True, rsm={'max': 10}, start=self.start_date)
        page = 1
        async for rsm in results:
            print('Page %d' % page)
            for msg in rsm['mam']['results']:
                forwarded = msg['mam_result']['forwarded']
                timestamp = forwarded['delay']['stamp']
                message = forwarded['stanza']
                print('[%s] %s: %s' % (timestamp, message['from'], message['body']))
            page += 1
        self.disconnect()

if __name__ == '__main__':
    # Setup the command line arguments.
    parser = ArgumentParser()
    parser.add_argument("-q","--quiet", help="set logging to ERROR",
                        action="store_const",
                        dest="loglevel",
                        const=logging.ERROR,
                        default=logging.INFO)
    parser.add_argument("-d","--debug", help="set logging to DEBUG",
                        action="store_const",
                        dest="loglevel",
                        const=logging.DEBUG,
                        default=logging.INFO)

    # JID and password options.
    parser.add_argument("-j", "--jid", dest="jid",
                        help="JID to use")
    parser.add_argument("-p", "--password", dest="password",
                        help="password to use")

    # Other options
    parser.add_argument("-r", "--remote-jid", dest="remote_jid",
                        help="Remote JID")
    parser.add_argument("--start", help="Start date", default='2017-09-20T12:00:00Z')

    args = parser.parse_args()

    # Setup logging.
    logging.basicConfig(level=args.loglevel,
                        format='%(levelname)-8s %(message)s')

    if args.jid is None:
        args.jid = input("Username: ")
    if args.password is None:
        args.password = getpass("Password: ")
    if args.remote_jid is None:
        args.remote_jid = input("Remote JID: ")
    if args.start is None:
        args.start = input("Start time: ")

    xmpp = MAM(args.jid, args.password, args.remote_jid, args.start)
    xmpp.register_plugin('xep_0313')

    # Connect to the XMPP server and start processing XMPP stanzas.
    xmpp.connect()
    xmpp.process(forever=False)
