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

"""
	Slixmpp: The Slick XMPP Library
	Copyright (C) 2010  Nathanael C. Fritz
	This file is part of Slixmpp.

	See the file LICENSE for copying permission.
"""

# Code source: https://git.poez.io/slixmpp/tree/examples/muc.py

# To run this bot:
# $ python3 streambot.py --jid username@yourdomainname.ext --password password --room channel@groups.domainname.ext --nick nickname --output ./output/


import logging
from getpass import getpass
from argparse import ArgumentParser

import slixmpp
import ssl, os, requests, urllib

class MUCBot(slixmpp.ClientXMPP):
	"""
	A simple Slixmpp bot that will save images 
	and messages that are marked with #publish to a folder.
	"""

	def __init__(self, jid, password, room, nick, output):
		slixmpp.ClientXMPP.__init__(self, jid, password)

		self.room = room
		self.nick = nick
		self.output = output

		# 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)

		# The groupchat_message event is triggered whenever a message
		# stanza is received from any chat room. If you also also
		# register a handler for the 'message' event, MUC messages
		# will be processed by both handlers.
		self.add_event_handler("groupchat_message", self.muc_message)


	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.
		"""

		self.get_roster()
		self.send_presence()

		# https://xmpp.org/extensions/xep-0045.html
		self.plugin['xep_0045'].join_muc(self.room,
										 self.nick,
										 # If a room password is needed, use:
										 # password=the_room_password,
										 wait=True)

	def muc_message(self, msg):
		"""
		Process incoming message stanzas from any chat room. Be aware
		that if you also have any handlers for the 'message' event,
		message stanzas may be processed by both handlers, so check
		the 'type' attribute when using a 'message' event handler.

		Whenever the bot's nickname is mentioned, respond to
		the message.

		IMPORTANT: Always check that a message is not from yourself,
				   otherwise you will create an infinite loop responding
				   to your own messages.

		This handler will reply to messages that mention
		the bot's nickname.

		Arguments:
			msg -- The received message stanza. See the documentation
				   for stanza objects and the Message stanza to see
				   how it may be used.
		"""

		# Some inspection commands
		# print('\nMessage:{}'.format(msg))
		# print('\nMessage TYPE:{}'.format(msg['type']))
		# print('\nMessage body:{}'.format(msg['body']))
		# print('\nMessage OOB:{}'.format(msg['oob']))
		# print('\nMessage OOB URL:{}'.format(msg['oob']['url']))
		# print('\nMessage MUCK NICK:{}'.format(msg['mucnick']))

		# Always check that a message is not the bot itself, otherwise you will create an infinite loop responding to your own messages.
		if msg['mucnick'] != self.nick:

			# Check if an OOB URL is included in the stanza (which is how an image is sent)
			# (OOB object - https://xmpp.org/extensions/xep-0066.html#x-oob)
			if len(msg['oob']['url']) > 0:

				# Send a reply
				self.send_message(mto=msg['from'].bare,
								  mbody="Thanks! I'll save that image for you, {}.".format(msg['mucnick']),
								  mtype='groupchat')
				
				# Save the image to the output folder
				url = msg['oob']['url'] # grep the url in the message
				filename = os.path.basename(url) # grep the filename in the url
				output = self.output
				if not os.path.exists(output):
					os.mkdir(output)
				output_path = os.path.join(output, filename)

				u = urllib.request.urlopen(url) # read the image data
				f = open(output_path, 'wb') # open the output file 
				f.write(u.read()) # write image to file
				f.close() # close the output file

				# Add image to stream
				img = '<img src="{}">'.format(filename)
				stream = 'stream.html'
				stream_path = os.path.join(output, stream)
				f = open(stream_path, 'a+')
				f.write(img+'\n')
				f.close()

			# Include messages in the stream (only when '#publish' is used in the message)
			if '#publish' in msg['body']:

				# reply from the bot
				self.send_message(mto=msg['from'].bare,
								  mbody="Really? Oke. I'll publish that for you, {}.".format(msg['mucnick']),
								  mtype='groupchat')

				# Add message to stream
				message = '<p class="message">{}</p>'.format(msg['body'])
				output = self.output
				if not os.path.exists(output):
					os.mkdir(output)
				stream = 'stream.html'
				stream_path = os.path.join(output, stream)
				f = open(stream_path, 'a+')
				f.write(message+'\n')
				f.close()

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")
	parser.add_argument("-r", "--room", dest="room",
						help="MUC room to join")
	parser.add_argument("-n", "--nick", dest="nick",
						help="MUC nickname")

	# output folder for images
	parser.add_argument("-o", "--output", dest="output", 
						help="output folder, this is where the files are stored", 
						default="./output/", type=str)

	args = parser.parse_args()

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

	if args.jid is None:
		args.jid = input("User: ")
	if args.password is None:
		args.password = getpass("Password: ")
	if args.room is None:
		args.room = input("MUC room: ")
	if args.nick is None:
		args.nick = input("MUC nickname: ")
	if args.output is None:
		args.output = input("Output folder: ")

	# Setup the MUCBot and register plugins. Note that while plugins may
	# have interdependencies, the order in which you register them does
	# not matter.
	xmpp = MUCBot(args.jid, args.password, args.room, args.nick, args.output)
	xmpp.register_plugin('xep_0030') # Service Discovery
	xmpp.register_plugin('xep_0045') # Multi-User Chat
	xmpp.register_plugin('xep_0199') # XMPP Ping
	xmpp.register_plugin('xep_0066') # Process URI's (files, images)

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