#!/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 script (local):
# $ python3 streambot.py -j streambot@vvvvvvaria.org -p slowstreaming -r test@muc.vvvvvvaria.org -n streambot -o ./stream/


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 greets those
	who enter the room, and acknowledge any messages
	that mentions the bot's nickname.
	"""

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

		self.room = room
		self.nick = nick
		self.datadir = 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)

		# The groupchat_presence event is triggered whenever a
		# presence stanza is received from any chat room, including
		# any presences you send yourself. To limit event handling
		# to a single room, use the events muc::room@server::presence,
		# muc::room@server::got_online, or muc::room@server::got_offline.
		self.add_event_handler("muc::{}::got_online".format(self.room), self.muc_online)


	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.get_roster()
		self.send_presence()
		self.plugin['xep_0045'].join_muc(self.room,
										 self.nick,
										 # If a room password is needed, use:
										 # password=the_room_password,
										 wait=True)

		self.register_plugin('xep_0066') # To send URI's (files, images)
								# Needed to work with images
								# This makes slixmpp understand an OOB object - https://xmpp.org/extensions/xep-0066.html#x-oob

	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:

			# publish images
			if len(msg['oob']['url']) > 0:
				
				url = msg['oob']['url']
				filename = os.path.basename(url)
				targetDir = self.datadir

				if not os.path.exists(targetDir):
					os.mkdir(targetDir, '0755')

				targetFile = os.path.join(targetDir, filename)

				# response = requests.get(url)
				# if response.status_code == 200:
					# with open(targetFile, 'wb') as f:
						# f.write(response.content)
				
				# needed to disable certificate validation:
				ctx = ssl.create_default_context()
				ctx.check_hostname = False
				ctx.verify_mode = ssl.CERT_NONE

				# save image to file
				# urllib.request.urlretrieve(msg['oob']['url'], targetFile, context=ctx)
				u = urllib.request.urlopen(url, context=ctx)
				f = open(targetFile, 'wb')
				f.write(u.read())
				f.close()

				# add image to the stream markdown log
				stream_update = '![An image sent over XMPP]({})'.format(targetFile)

				filename = 'stream.md'
				targetFile = os.path.join(targetDir, filename)
				
				f = open(targetFile, 'a+')
				f.write(stream_update+'\n\n')
				f.close()

			# publish regular messages (only when '#publish' is used in the message)
			if '#stream' in msg['body']:
				self.send_message(mto=msg['from'].bare,
								  mbody="I'll stream that further, {}.".format(msg['mucnick']),
								  mtype='groupchat')

				# add message to the stream markdown log
				stream_update = msg['body']

				targetDir = self.datadir
				if not os.path.exists(targetDir):
					os.mkdir(targetDir, '0755')

				filename = 'stream.md'
				targetFile = os.path.join(targetDir, filename)

				f = open(targetFile, 'a+')
				f.write(stream_update+'\n\n')
				f.close()


	# def muc_online(self, presence):
	# 	"""
	# 	Process a presence stanza from a chat room. In this case,
	# 	presences from users that have just come online are
	# 	handled by sending a welcome message that includes
	# 	the user's nickname and role in the room.

	# 	Arguments:
	# 		presence -- The received presence stanza. See the
	# 					documentation for the Presence stanza
	# 					to see how else it may be used.
	# 	"""
	# 	if presence['muc']['nick'] != self.nick and presence['muc']['nick'] != '':
	# 		self.send_message(mto=presence['from'].bare,
	# 						  mbody="Hello, {} {}".format(presence['muc']['role'], presence['muc']['nick']),
	# 						  mtype='groupchat')


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 directory for images
	parser.add_argument("-o", "--output", dest="output", 
						help="Output folder, this is where the material is stored", 
						default="./stream/", 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("Username: ")
	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("Directory where the material can be stored: ")

	# 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

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