#!/usr/bin/env python3

# Slixmpp: The Slick XMPP Library
# Copyright (C) 2010  Nathanael C. Fritz
# This file is part of Slixmpp.
# See the file LICENSE for copying permission.

import logging
from getpass import getpass
from argparse import ArgumentParser

import asyncio
import slixmpp

from slixmpp import Iq
from slixmpp.xmlstream import register_stanza_plugin
from slixmpp.xmlstream.handler import Callback
from slixmpp.xmlstream.matcher import StanzaPath
from stanza import Action


class ActionBot(slixmpp.ClientXMPP):

    """
    A simple Slixmpp bot that receives a custom stanza
    from another client.
    """

    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.register_handler(
          Callback('Some custom iq',
            StanzaPath('iq@type=set/action'),
            self._handle_action))

        self.add_event_handler('custom_action',
                self._handle_action_event)

        register_stanza_plugin(Iq, Action)

    async 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.
        """
        self.send_presence()
        self.get_roster()

    def _handle_action(self, iq):
        """
        Raise an event for the stanza so that it can be processed in its
        own thread without blocking the main stanza processing loop.
        """
        self.event('custom_action', iq)

    async def _handle_action_event(self, iq):
        """
        Respond to the custom action event.
        """
        method = iq['action']['method']
        param = iq['action']['param']

        if method == 'is_prime' and param == '2':
            print("got message: %s" % iq)
            rep = iq.reply()
            rep['action']['status'] = 'done'
            await rep.send()
        elif method == 'bye':
            print("got message: %s" % iq)
            rep = iq.reply()
            rep['action']['status'] = 'done'
            await rep.send()
            self.disconnect()
        else:
            print("got message: %s" % iq)
            rep = iq.reply()
            rep['action']['status'] = 'error'
            await rep.send()

if __name__ == '__main__':
    # Setup the command line arguments.
    parser = ArgumentParser()

    # Output verbosity options.
    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")

    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: ")

    # Setup the CommandBot and register plugins. Note that while plugins may
    # have interdependencies, the order in which you register them does
    # not matter.
    xmpp = ActionBot(args.jid, args.password)
    xmpp.register_plugin('xep_0030') # Service Discovery
    xmpp.register_plugin('xep_0004') # Data Forms
    xmpp.register_plugin('xep_0050') # Adhoc Commands
    xmpp.register_plugin('xep_0199', {'keepalive': True, 'frequency':15})

    # Connect to the XMPP server and start processing XMPP stanzas.
    xmpp.connect()
    asyncio.get_event_loop().run_forever()
