#!/usr/bin/env python
import logging
import sys
from argparse import ArgumentParser, FileType, SUPPRESS
import yaml
import sleekxmpp
if sys.version_info < (3, 0):
    reload(sys)
    sys.setdefaultencoding('utf8')
else:
    raw_input = input
class RollBot(sleekxmpp.ClientXMPP):
    def __init__(self, jid, password, nick, prefix):
        sleekxmpp.ClientXMPP.__init__(self, jid, password)
        self.nick = nick
        self.prefix = prefix
        self.commands = []
        self.add_event_handler('session_start', self.start)
        self.add_event_handler('message', self.message)
        self.add_event_handler('groupchat_message', self.muc_message)
        self.add_event_handler('groupchat_invite', self.muc_invite)
        self.add_event_handler('groupchat_direct_invite', self.muc_direct_invite)
    def start(self, event):
        self.get_roster()
        self.send_presence()
    def message(self, msg):
        if msg['type'] not in ('chat', 'normal'):
            return
        rbody = self.respond(msg['body'].strip())
        if rbody:
            msg.reply(rbody)
            msg.send()
    def muc_message(self, msg):
        if msg['mucnick'] == self.nick:
            return
        mbody = msg['body'].lstrip()
        if mbody.startswith(self.nick):
            mbody = mbody[len(self.nick):]
        elif mbody.startswith(self.prefix):
            mbody = mbody[len(self.prefix):]
        else:
            return
        mbody = mbody.lstrip(':, \t')
        rbody = self.respond(mbody)
        if rbody:
            rbody = '%s: %s' % (msg['mucnick'], rbody)
            msg.reply(rbody)
            msg.send()
    def muc_invite(self, invite):
        room = invite['from']
        password = '' # https://github.com/fritzy/SleekXMPP/issues/409
        self.plugin['xep_0045'].joinMUC(room, self.nick, password=password, wait=True)
    def muc_direct_invite(self, invite):
        room = invite['groupchat_invite']['jid']
        password = invite['groupchat_invite']['password']
        self.plugin['xep_0045'].joinMUC(room, self.nick, password=password, wait=True)
    def respond(self, message, prefix=None):
        response = ''
        for command in self.commands:
            response = command.parse(message)
            if response:
                break
        return response
def lookup(key, args, config, default=None):
    if hasattr(args, key):
        return getattr(args, key)
    return config.get(key, default)
def main():
    parser = ArgumentParser(argument_default=SUPPRESS)
    parser.add_argument('-c', '--config', help='configuration file (YAML)', type=FileType('r'))
    group = parser.add_argument_group('main configuration', 'options that can be specified in the configuration file')
    group.add_argument('-j', '--jid', help='JID to use')
    group.add_argument('-p', '--password', help='password to use')
    group.add_argument('-n', '--nick', help='MUC nickname (default: rollbot)')
    group.add_argument('--prefix', help='command prefix (default: !)')
    group = parser.add_mutually_exclusive_group()
    group.add_argument('-q', '--quiet', help='set logging to ERROR', action='store_const', dest='loglevel', const=logging.ERROR, default=logging.INFO)
    group.add_argument('-d', '--debug', help='set logging to DEBUG', action='store_const', dest='loglevel', const=logging.DEBUG, default=logging.INFO)
    args = parser.parse_args()
    logging.basicConfig(level=args.loglevel, format='%(asctime)s %(levelname)-8s %(message)s')
    if hasattr(args, 'config'):
        config = yaml.safe_load(args.config)
    else:
        config = {}
    jid = lookup('jid', args, config)
    password = lookup('password', args, config)
    nick = lookup('nick', args, config, default='rollbot')
    prefix = lookup('prefix', args, config, default='!')
    rollbot = RollBot(jid, password, nick, prefix)
    rollbot.auto_authorize = True
    rollbot.auto_subscribe = True
    rollbot.register_plugin('xep_0030') # Service Discovery
    rollbot.register_plugin('xep_0045') # Multi-User Chat
    rollbot.register_plugin('xep_0092') # Software Version
    rollbot.register_plugin('xep_0199') # XMPP Ping
    rollbot.register_plugin('xep_0202') # Entity Time
    rollbot.register_plugin('xep_0249') # Direct MUC Invitations
    if rollbot.connect():
        logging.info('RollBot connected')
        rollbot.process(block=True)
        logging.info('RollBot disconnected')
    else:
        logging.fatal("RollBot couldn't connect")
if __name__ == '__main__':
    main()