import teambot,tasks,rss,time,sys,subprocess,re

feed_url = "https://cosmic.voyage/rss.xml"
bot_op = "khuxkm@sudoers.tilde.team"

def unhighlight_nick (nick):
	return "_{}_".format(nick)

def datetimejoin(joiner, parts):
	return joiner.join([str(x).rjust(2, '0') for x in parts])

def newpost(it):
	return dict(
		guid = it.guid,
		title = it.title,
		link = it.link,
		date = datetimejoin('-', it.published_parsed[0:3]) + ' ' + datetimejoin(':', it.published_parsed[3:6])
	)

class CosmicBot(teambot.Handler):
	def __init__(self,bot):
		super(CosmicBot,self).__init__(bot)
		self.prefix = "!"
		self.tasks = tasks.TaskPool()
		self.tasks.add_coroutine(self.check_rss,12,dict(url=feed_url,known=[],channel="#cosmic"))
		self.tasks.load_state(0)
		self.commands = dict()
		self.register_command("botlist",self.on_botlist)
		self.register_command("roster",self.on_roster)
		self.register_command("latest",self.on_latest)
		self.register_command("fortune",self.on_fortune)
		self.register_command("admin",self.on_admin,True)
	def register_command(self,name,action,is_admin=False):
		self.commands[name] = dict(action=action,is_admin=is_admin)
	def on_connection_established(self):
		self.tasks.run()
	def check_rss(self,state,base_state):
		newtrans = rss.fetchNew(state["url"],[x["guid"] for x in state["known"]])
		if newtrans:
			state["known"].extend(newpost(x) for x in newtrans)
			for trans in newtrans:
				self.say(state["channel"],"Transmission received: {transmission.title} ({transmission.link})".format(transmission=trans))
				time.sleep(1)
		return state
	def on_pubmsg(self,channel,nick,text):
		if not text.startswith(self.prefix):
			return
		args = text[len(self.prefix):].strip().split()
		cmd = args.pop(0)
		is_admin = self.event.source.userhost == bot_op
		if cmd in self.commands:
			if (not self.commands[cmd]["is_admin"]) or (self.commands[cmd]["is_admin"] and is_admin):
				try:
					self.commands[cmd]["action"](channel,nick,*args)
				except Exception as e:
					print("access violation "+str(e))
	def on_botlist(self,channel,nick):
		self.say(channel,nick+": Maintainer: khuxkm@cosmic.voyage | Utility bot")
	def on_admin(self,channel,nick,subcmd,*args):
		if subcmd=="down":
			self.tasks.stop()
			self.tasks.save_state(0)
			self._bot.die("Stopping...")
			sys.exit(0)
		elif subcmd=="check":
			self.tasks.states[0] = self.check_rss(self.tasks.states[0],self.tasks.base_state)
	def on_roster(self,channel,nick,*namecnt):
		output = subprocess.check_output(["/usr/local/bin/roster",' '.join(namecnt)]).decode("ascii").split("\n")
		output = filter(None,output)
		for line in output:
			line = re.sub("\s+"," ",line).split(" ",1)
			self.say(channel,"{}: {} (by {})".format(nick,line[1],unhighlight_nick(line[0])))
	def on_latest(self,channel,nick,count=5):
		count = int(count)
		if count < 1:
			count = 1  # ...nice try, smartass
		if count > 5:
			count = 5  # don't spam the channel
		self.say(channel, "{}: Latest {} {}. (See cosmic.voyage for more!)".format(nick, count, (count == 1 and "entry" or "entries")))
		output = subprocess.check_output(["/usr/local/bin/latest",str(count)]).decode("ascii").split("\n")
		output = filter(None,output)
		for line in output:
			self.say(channel,"{}: {}".format(nick,line))
	def on_fortune(self,channel,nick):
		output = subprocess.check_output(["/usr/games/fortune"]).decode("ascii").split("\n")
		output = filter(None,output)
		for line in output:
			self.say(channel,"{}".format(line))

if __name__=="__main__":
	channels = "#cosmic".split()
	bot = teambot.TeamBot(channels,"cosmicbot","localhost",chandler=CosmicBot)
	bot.start()