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

"""
    Slixmpp: The Slick XMPP Library
    Copyright (C) 2011  Nathanael C. Fritz
    This file is part of Slixmpp.

    See the file LICENSE for copying permission.
"""

import logging
from getpass import getpass
import threading
from optparse import OptionParser

import slixmpp
from slixmpp.exceptions import IqError, IqTimeout


class RosterBrowser(slixmpp.ClientXMPP):

    """
    A basic script for dumping a client's roster to
    the command line.
    """

    def __init__(self, jid, password):
        slixmpp.ClientXMPP.__init__(self, jid, password)
        # The session_start event will be triggered when
        # the bot establishes its connection with the server
        # and the XML streams are ready for use. We want to
        # listen for this event so that we we can initialize
        # our roster.
        self.add_event_handler("session_start", self.start)
        self.add_event_handler("changed_status", self.wait_for_presences)

        self.received = set()
        self.presences_received = threading.Event()

    def start(self, event):
        """
        Process the session_start event.

        Typical actions for the session_start event are
        requesting the roster and broadcasting an initial
        presence stanza.

        Arguments:
            event -- An empty dictionary. The session_start
                     event does not provide any additional
                     data.
        """
        try:
            self.get_roster()
        except IqError as err:
            print('Error: %' % err.iq['error']['condition'])
        except IqTimeout:
            print('Error: Request timed out')
        self.send_presence()


        print('Waiting for presence updates...\n')
        self.presences_received.wait(5)

        print('Roster for %s' % self.boundjid.bare)
        groups = self.client_roster.groups()
        for group in groups:
            print('\n%s' % group)
            print('-' * 72)
            for jid in groups[group]:
                sub = self.client_roster[jid]['subscription']
                name = self.client_roster[jid]['name']
                if self.client_roster[jid]['name']:
                    print(' %s (%s) [%s]' % (name, jid, sub))
                else:
                    print(' %s [%s]' % (jid, sub))

                connections = self.client_roster.presence(jid)
                for res, pres in connections.items():
                    show = 'available'
                    if pres['show']:
                        show = pres['show']
                    print('   - %s (%s)' % (res, show))
                    if pres['status']:
                        print('       %s' % pres['status'])

        self.disconnect()

    def wait_for_presences(self, pres):
        """
        Track how many roster entries have received presence updates.
        """
        self.received.add(pres['from'].bare)
        if len(self.received) >= len(self.client_roster.keys()):
            self.presences_received.set()
        else:
            self.presences_received.clear()



if __name__ == '__main__':
    # Setup the command line arguments.
    optp = OptionParser()
    optp.add_option('-q','--quiet', help='set logging to ERROR',
                    action='store_const',
                    dest='loglevel',
                    const=logging.ERROR,
                    default=logging.ERROR)
    optp.add_option('-d','--debug', help='set logging to DEBUG',
                    action='store_const',
                    dest='loglevel',
                    const=logging.DEBUG,
                    default=logging.ERROR)
    optp.add_option('-v','--verbose', help='set logging to COMM',
                    action='store_const',
                    dest='loglevel',
                    const=5,
                    default=logging.ERROR)

    # JID and password options.
    optp.add_option("-j", "--jid", dest="jid",
                    help="JID to use")
    optp.add_option("-p", "--password", dest="password",
                    help="password to use")
    opts,args = optp.parse_args()

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

    if opts.jid is None:
        opts.jid = input("Username: ")
    if opts.password is None:
        opts.password = getpass("Password: ")

    xmpp = RosterBrowser(opts.jid, opts.password)

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