from sys import exit
from random import randint
from time import sleep

import config as cfg
from irc import IRC


class Ramen:
    """Functions for ramenkan."""

    irc = IRC()
    irc.debug = cfg.debug

    def run(self):
        """Connect to the server and channels, initialise the listener in the
        application loop."""
        self.irc.connect(cfg.server, cfg.bot_nick)
        self.irc.join_channels(cfg.channels)
        while 1:
            sleep(2)
            data = self.irc.receive(debug=cfg.debug)
            self.irc.keep_alive(data)
            self.msg = self.irc.parse_msg(data, cfg.req_prefix)
            for chan in cfg.channels:
                self.handle(chan)

    def handle(self, channel):
        """Listen for requests in a channel and pass them to handler 
        functions."""
        if self.msg["req_chan"] == cfg.bot_nick:
            # Respond to some commands only from admin user
            if self.msg["user"].lower() == cfg.admin_user.lower() and \
                cfg.admin_code in self.msg["req"]:
                self.handle_admin_req(self.msg["req"], cfg.admin_user)

        # Respond only in the channel the request was made
        if channel == self.msg["req_chan"]:
            # General commands
            if self.msg["req"] == "rollcall" or self.msg["req"] == "help":
                self.handle_rollcall()
            elif self.msg["req"] == ("water " + cfg.bot_nick):
                self.handle_water()
            elif self.msg["req"] == ("botsnack " + cfg.bot_nick):
                self.handle_botsnack()

    def handle_admin_req(self, req, admin_user):
        """Perform admin functions."""
        if "exit" in req:
            self.irc.send("PRIVMSG", "Okay, okay, I'll leave. (´･ω･`)", \
                recvr=admin_user)
            self.irc.send("QUIT", ":noodling off")
            exit("Shutting down ...")

    def handle_rollcall(self):
        resp = (
            "一、二、三、らーめん缶！ "
            "Hello, I am a ramen vending machine. "
            "Please type a code for service: "
            "!help "
            "Support: +81 012-700-1MIO  どうぞめしあがれ。"
            )
        self.irc.send("PRIVMSG", resp, recvr=self.msg["req_chan"])

    def handle_water(self):
        resp = [
            ("\x01ACTION happily pours the hot liquid into a bowl of noodles "
            "and offers it to ") + self.msg["nick"] + "\x01",
            "（ ^_^）o自自o（^_^ ）Cheers!",
            "Water Level [/////////] 200% - Thanks! (^▽^)"
            ]
        self.irc.send("PRIVMSG", resp[randint(0, len(resp)-1)], \
            recvr=self.msg["req_chan"])

    def handle_botsnack(self):
        self.irc.send("PRIVMSG", "Ramen time anytime! ヽ(´▽`)/", \
            recvr=self.msg["req_chan"])


app = Ramen()
app.run()