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

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

    See the file LICENSE for copying permission.
"""

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

import sleekxmpp
from sleekxmpp.exceptions import IqError, IqTimeout


# Python versions before 3.0 do not use UTF-8 encoding
# by default. To ensure that Unicode is handled properly
# throughout SleekXMPP, we will set the default encoding
# ourselves to UTF-8.
if sys.version_info < (3, 0):
    reload(sys)
    sys.setdefaultencoding('utf8')
else:
    raw_input = input


class RosterBrowser(sleekxmpp.ClientXMPP):

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

    def __init__(self, jid, password):
        sleekxmpp.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. We need threaded=True so that the
        # session_start handler doesn't block event processing
        # while we wait for presence stanzas to arrive.
        self.add_event_handler("session_start", self.start, threaded=True)
        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 = raw_input("Username: ")
    if opts.password is None:
        opts.password = getpass.getpass("Password: ")

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

    # If you are working with an OpenFire server, you may need
    # to adjust the SSL version used:
    # xmpp.ssl_version = ssl.PROTOCOL_SSLv3

    # If you want to verify the SSL certificates offered by a server:
    # xmpp.ca_certs = "path/to/ca/cert"

    # Connect to the XMPP server and start processing XMPP stanzas.
    if xmpp.connect():
        # If you do not have the dnspython library installed, you will need
        # to manually specify the name of the server if it does not match
        # the one in the JID. For example, to use Google Talk you would
        # need to use:
        #
        # if xmpp.connect(('talk.google.com', 5222)):
        #     ...
        xmpp.process(block=True)
    else:
        print("Unable to connect.")

