import json
import requests as r
import logging
import time
import datetime
from functools import wraps
from threading import Thread
from irc import IRC

from sasl import nick, password
from users import USERS


class Shoutbox(object):
    def __init__(self, cookies):
        self.channels = {'annonces': 0, 'projets': 0, 'hs': 0}
        self.cookies = cookies
        self._callbacks = []
        self.irc_clients = {}  # pseudo: [IRC(), date]

        for channel, last_id in self.channels.items():
            messages = json.loads(r.get(f"https://www.planet-casio.com/Fr/shoutbox/api/read?since={last_id}&channel={channel}&format=text").text)['messages']
            for m in messages:
                self.channels[channel] = m['id']

    def run(self):
        def handler():
            while True:
                for channel, last_id in self.channels.items():
                    messages = json.loads(r.get(f"https://www.planet-casio.com/Fr/shoutbox/api/read?since={last_id}&channel={channel}&format=text").text)['messages']
                    for m in messages:
                        logging.debug(m)
                        self.channels[channel] = m['id']
                        message = SBMessage(m, channel)
                        for event, callback in self._callbacks:
                            author = Shoutbox.normalize(message.author)
                            # client is not known or is disconnected
                            if author not in self.irc_clients.keys() \
                            or self.irc_clients[author][0].running == False:
                                self.irc_clients[author] = [
                                    IRC('irc.planet-casio.com', 6697),
                                    datetime.datetime.now()
                                ]
                                self.irc_clients[author][0].start(f"{author}[s]", password, nick)
                                logging.debug(f"{author} has joined IRC")
                            # client is known but AFK
                            else:
                                self.irc_clients[author][1] = datetime.datetime.now()
                                logging.debug(f"{author} has updated IRC")

                            if event(message):
                                logging.info(f"matched {event.__name__}")
                                callback(message)
                # kill afk clients
                for c in self.irc_clients.values():
                    if datetime.datetime.now() - c[1] > datetime.timedelta(hours=1):
                        c[0].stop()
                time.sleep(1)
        Thread(target=handler).start()

    def on(self, event):
        """ Adds a callback to the IRC handler
            Event is a function taking in parameter a SBMessage and returning
            True if the callback should be executed on the message """

        def callback(func):
            @wraps(func)
            def wrapper(message):
                func(message)
            self._callbacks.append((event, wrapper))
            logging.info(f"added callback {func.__name__}")
            return wrapper

        return callback

    def post(self, user, msg, channel, users):
        if msg.startswith("ACTION"):
            msg = msg.replace("ACTION", "/me")
        if any(user in t for t in users):
            for i in users:
                if i[1] == user:
                    r.post("https://www.planet-casio.com/Fr/shoutbox/api/post-as",
                           data={"user": i[0], "message": msg, "channel": channel},
                           cookies=self.cookies)
        else:
            r.post("https://www.planet-casio.com/Fr/shoutbox/api/post-as",
                   data={"user": "IRC", "message": f"{user} : {msg}", "channel": channel},
                   cookies=self.cookies)

    def normalize(pseudo):
        if pseudo.lower() in [u[0].lower() for u in USERS]:
            return [u[1] for u in USERS if u[0].lower() == pseudo.lower()][0]
        return pseudo.replace(' ', '_')


class SBMessage(object):
    def __init__(self, raw, channel):
        self.author = raw['author']
        self.channel = channel
        self.text = raw['content']