twitchtts/tts.py

#!/usr/bin/python3
# -*- coding: utf-8 -*-
# pylint: disable=line-too-long,too-many-lines

"""
    TwitchTTS
    Copyright (C) 2022 gpkvt

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
"""

import os
import sys
import time
import json
import signal
import socket
import random
import logging
import datetime
import webbrowser
import urllib.parse
import urllib.request

from threading import Thread
from collections import Counter
from urllib.parse import parse_qs
from urllib.error import HTTPError
from http.server import HTTPServer, BaseHTTPRequestHandler
from socketserver import ThreadingMixIn

import yaml
import requests

from fuzzywuzzy import process

class IRC:
    """ IRC bot """
    irc = socket.socket()

    def __init__(self):
        self.irc = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        self.tts_denied = []
        self.tts_allowed = []
        self.tts_status = conf['TTS_STARTENABLED']
        self.quickvote_status = False
        self.votemsg = False
        self.poll = {}
        self.pollcount = 0

        if 'WHITELIST_USER' in conf:
            self.tts_allowed = conf['WHITELIST_USER']

    def connect(self, server, port, channel, botnick, botpass):
        """ Connect to Twitch IRC servers """
        logging.info("Connecting to: %s", server)
        logging.info('Waiting...')
        try:
            self.irc.connect((server, port))
        except ConnectionResetError:
            logging.fatal('Twitch refused to connect, please check your settings and try again.')
            sys.exit(252)

        self.irc.settimeout(1)

        self.irc.send(bytes("PASS " + botpass + "\r\n", "UTF-8"))
        self.irc.send(bytes(
            "USER " + botnick + " " + botnick +" " + botnick + " :python\r\n", "UTF-8")
        )
        self.irc.send(bytes("NICK " + botnick + "\r\n", "UTF-8"))
        self.irc.send(bytes("CAP REQ :twitch.tv/commands twitch.tv/tags \r\n", "UTF-8"))
        time.sleep(5)

        try:
            self.irc.send(bytes("JOIN " + channel + "\r\n", "UTF-8"))
        except ConnectionResetError:
            logging.warning('JOIN was refused, will try again in 30 seconds.')
            time.sleep(30)
            logging.warning('Please check your credentials, if this error persists.')
            self.irc.send(bytes("JOIN " + channel + "\r\n", "UTF-8"))

    def sendmsg(self, channel, user, msg):
        """
        Send (a public) message to IRC channel

            Parameters:
                channel (str): Channel to post msg to
                user (str): User to address message to
                msg (str): Message to send
        """
        self.irc.send(bytes("PRIVMSG "+channel+" :"+user+" "+msg+"\r\n", "UTF-8"))

    def resp_ping(self):
        """ Respond to PING """
        logging.debug('PING received')
        self.irc.send(bytes('PONG :tmi.twitch.tv\r\n', "UTF-8"))

    def resp_notice(self, resp):
        """ Respond to NOTICE """
        if 'Login authentication failed' in resp:
            try:
                raise RuntimeError()
            except RuntimeError:
                logging.exception('Login failed, please check your credentials and try again.')
                sys.exit(251)

    def resp_clearmsg(self, resp):
        """ Respond to CLEARMSG """
        logging.info('CLEARMSG received')
        msgid = False

        global msg_queue_raw # pylint: disable=global-statement,invalid-name
        filtered_msg_queue = []

        tags = resp.split(';')
        for tag in tags:
            if "target-msg-id=" in tag:
                msgid = tag.rsplit('target-msg-id=',1)[1]
                logging.debug('Trying to suppress message')
                logging.debug(msgid)

                for msg in list(msg_queue_raw):
                    if msg['msgid'] == msgid:
                        logging.info('Suppressing message %s', msgid)
                    else:
                        filtered_msg_queue.append(msg)

                msg_queue_raw = filtered_msg_queue

    def resp_privmsg(self, resp):
        """ Respond to PRIVMSG """
        logging.debug('PRIVMSG received')

        tags = self.get_tags(resp)
        message = self.get_message(resp)

        user = tags['user']
        msg = message['message']
        msglen = message['length']

        logging.debug('Msg: %s', msg)
        logging.debug('Msg length: %s', msglen)
        logging.debug('Deny List:')
        logging.debug(self.tts_denied)

        self.priviledged_commands(message, tags)

        if msg.startswith('#') and self.quickvote_status is True:
            logging.info('Quickvote: Cast detected')
            self.pollcount += 1
            self.poll[user] = msg.lower()
            logging.debug("poll: %s", self.poll)

        if msg.startswith('!tts'):
            logging.info('!tts command detected')
            self.Commands.tts(self, message, tags)

        if msg.startswith('!addquote'):
            logging.debug("!addquote command detected")
            self.Commands.addquote(self, tags, msg)

        if msg.startswith('!smartquote'):
            logging.debug("!smartquote command detected")
            self.Commands.quote(self, tags, msg)

    def get_tags(self, resp):
        """ Strip tags from response """

        tags = resp.split(';')
        for tag in tags:
            if tag.startswith('badges='):
                badges = tag.rsplit('badges=',1)[1]
            if tag.startswith('subscriber='):
                subscriber = tag.rsplit('subscriber=',1)[1]
                logging.debug('Subscriber: %s', subscriber)
            if tag.startswith('id='):
                msgid = tag.rsplit('id=',1)[1]
                logging.debug('Message ID: %s', msgid)
            if tag.startswith('display-name='):
                user = tag.rsplit('display-name=',1)[1].lower()
                logging.debug('Username: %s', user)

        tags = {}
        tags['badges'] = badges
        tags['subscriber'] = subscriber
        tags['msgid'] = msgid
        tags['user'] = user

        return tags

    def get_message(self, resp):
        """ Process message """

        msg = {}
        msg['message'] = resp.rsplit('PRIVMSG #',1)[1].split(':',1)[1].replace('\r\n','')
        msg['length'] = len(msg['message'])

        return msg

    def priviledged_commands(self, message, tags):
        """ Process priviledged commands """

        msg = message['message']
        badges = tags['badges']
        user = tags['user']

        if 'broadcaster' in badges or 'moderator' in badges:
            if msg.startswith('!ping'):
                logging.debug("Ping check received.")
                self.sendmsg(conf['IRC_CHANNEL'], "@"+str(user), "Pong!")

            elif msg.startswith('!dtts'):
                logging.debug("!dtts command detected")
                self.Commands.dtts(self, msg)

            elif msg.startswith('!random'):
                logging.info('!random command detected')
                self.Commands.random(self, msg)

            elif msg.startswith('!quickvote'):
                logging.info("!quickvote command detected")
                self.Commands.quickvote(self, msg)

            elif msg.startswith('!ptts'):
                logging.debug("!ptts command detected")
                self.Commands.ptts(self, msg)

            elif msg.startswith('!toff'):
                logging.info('TTS is now turned off')
                msg_queue.clear()
                msg_queue_raw.clear()
                self.tts_status = False
                self.sendmsg(conf['IRC_CHANNEL'], "@"+str(user), conf['MESSAGE']['TOFF'])

            elif msg.startswith('!ton'):
                logging.info('TTS is now turned on')
                msg_queue.clear()
                msg_queue_raw.clear()
                self.tts_status = True
                self.sendmsg(conf['IRC_CHANNEL'], "@"+str(user), conf['MESSAGE']['TON'])

    def check_subonly(self, tags):
        """ subonly """

        if not conf['IRC_SUBONLY']:
            return False

        subscriber = tags['subscriber']
        badges = tags['badges']
        user = tags['user']

        if subscriber != "0" or 'moderator' in badges or 'broadcaster' in badges:
            logging.info('TTS is sub-only and user has allowance')
            return False

        logging.debug('TTS is sub-only')
        self.sendmsg(conf['IRC_CHANNEL'], "@"+str(user), conf['MESSAGE']['SUBONLY'])
        return True

    def check_modonly(self, tags):
        """ modonly """

        if not conf['IRC_MODONLY']:
            return False

        badges = tags['badges']
        user = tags['user']

        if 'moderator' in badges or 'broadcaster' in badges:
            logging.info('TTS is mod-only and user has allowance')
            return False

        logging.debug('TTS is mod-only')
        self.sendmsg(conf['IRC_CHANNEL'], "@"+str(user), conf['MESSAGE']['MODONLY'])
        return True

    def check_tts_disabled(self, user):
        """ Check if TTS is disabled """
        if not self.tts_status:
            self.sendmsg(conf['IRC_CHANNEL'], "@"+str(user), conf['MESSAGE']['DISABLED'])
            return True

        logging.debug('TTS is enabled')
        return False

    def check_msg_too_long(self, message, user):
        """ Check if message is too long """

        if message['length'] > conf['IRC_TTS_LEN']:
            self.sendmsg(conf['IRC_CHANNEL'], "@"+str(user), conf['MESSAGE']['TOO_LONG'])
            return True

        logging.debug('Check length: Message is ok')
        return False

    def check_user_denied(self, user):
        """ Check if user is on denied list """
        if user in self.tts_denied:
            logging.info("%s is not allowed to use TTS", user)
            self.sendmsg(conf['IRC_CHANNEL'], "@"+str(user), conf['MESSAGE']['DENIED'])
            return True

        logging.debug("%s is allowed to use TTS", user)
        return False

    def check_whitelist(self, user):
        """ Check Whitelist """

        if conf['WHITELIST']:
            if user not in self.tts_allowed:
                logging.debug("tts_allowed: %s", self.tts_allowed)
                self.sendmsg(
                    conf['IRC_CHANNEL'],
                    "@"+str(user), conf['MESSAGE']['WHITELISTONLY']
                )
                return False
            return True
        return False

    def send_tts_msg(self, message, tags):
        """ Send message to TTS queue """
        logging.info('Valid TTS message, adding to raw queue')

        tts = True
        now = datetime.datetime.now()
        timestamp = str(time.time_ns())

        user = tags['user']
        msgid = tags['msgid']
        badges = tags['badges']
        subscriber = tags['subscriber']

        msg = message['message']
        msglen = message['length']
        msg = msg.replace('!tts','',1)

        msg = {
            "TTS": tts,
            "msg": msg,
            "badges": badges,
            "subscriber": subscriber,
            "msgid": msgid,
            "user": user,
            "length": msglen,
            "queuetime": now,
            "timestamp": timestamp
        }

        msg_queue_raw.append(msg)

    def get_response(self):
        """Get and process response from IRC"""
        try:
            resp = self.irc.recv(2048).decode("UTF-8")
            logging.debug('resp:')
            logging.debug(resp)
        except socket.timeout:
            return
        except Exception: # pylint: disable=broad-except
            logging.exception('An unknown error occured while getting a IRC response.')
            sys.exit(255)

        if resp.find('PING') != -1:
            self.resp_ping()

        if resp.find('CLEARMSG') != -1:
            self.resp_clearmsg(resp)

        if resp.find('NOTICE') != -1:
            self.resp_notice(resp)

        if resp.find('PRIVMSG') != -1:
            self.resp_privmsg(resp)

    class Commands():
        """ Bot commands """

        def __init__(self):
            self.tts_denied = []
            self.tts_allowed = []
            self.quickvote_status = self.quickvote_status
            self.votemsg = self.votemsg
            self.poll = self.poll
            self.pollcount = self.pollcount

        def tts(self, msg, tags):
            """ !tts command

                Check if message is valid and send it to queue

                :param str msg: The IRC message triggering the command
                :param dict tags: The message metadata
            """

            user = tags['user']

            if IRC.check_tts_disabled(self, user):
                logging.info('TTS is disabled')
            elif IRC.check_msg_too_long(self, msg, user):
                logging.info('TTS message is too long')
            elif IRC.check_user_denied(self, user):
                logging.info('User is not allowed to use TTS')
            elif IRC.check_subonly(self, tags):
                logging.info('TTS is sub-only')
            elif IRC.check_modonly(self, tags):
                logging.info('TTS is mod-only')
            elif IRC.check_whitelist(self, user):
                logging.info('User is not on whitelist')
            else:
                logging.info('Sending TTS message to raw_queue')
                IRC.send_tts_msg(self, msg, tags)

        def addquote(self, tags, msg):
            """ !addquote command

                Adds a newline to quotes.txt
            """

            user = tags['user']

            if IRC.check_user_denied(self, user):
                logging.info('User is not allowed to use TTS')
            elif IRC.check_subonly(self, tags):
                logging.info('TTS is sub-only')
            else:
                try:
                    with open("quotes.txt", "rb") as file:
                        nol = len(file.readlines())
                    file.close()
                except FileNotFoundError:
                    logging.warning("quotes.txt does not exists, will create")
                    nol = 0

                nol = nol + 1
                quote = msg.replace("!addquote ", "").strip()
                quote = quote.split(" ",1)
                username = quote[0]

                date = time.strftime("%d.%m.%Y")

                try:
                    token = conf['IRC_OAUTH_TOKEN'].replace('oauth:','')
                    login = conf['IRC_CHANNEL'].replace('#','')
                    api_endpoint = "https://api.twitch.tv/helix/users?login="+str(login)
                    headers = {
                        'Content-type': 'application/x-form-urlencoded',
                        'Authorization': 'Bearer '+token,
                        'Client-Id': 'ebo548vs6tq54c9zlrgin2yfzzlrrs'
                    }
                    req = requests.get(url=api_endpoint, headers=headers)
                    data = req.json()
                    user_id = data['data'][0]['id']

                    api_endpoint = "https://api.twitch.tv/helix/channels?broadcaster_id="+str(user_id)
                    headers = {
                        'Content-type': 'application/x-form-urlencoded',
                        'Authorization': 'Bearer '+token,
                        'Client-Id': 'ebo548vs6tq54c9zlrgin2yfzzlrrs'
                    }
                    req = requests.get(url=api_endpoint, headers=headers)
                    data = req.json()
                    game = data['data'][0]['game_name']

                    quote = f"#{nol}: \"{quote[1]}\" -{username}/{game} ({date})\n"
                except: # pylint: disable=bare-except
                    logging.warning('Could not get metadata for quote')
                    quote = f"#{nol}: \"{quote[1]}\" -{username} ({date})\n"

                logging.info('Adding quote %s', quote)
                with open("quotes.txt", "ab") as file:
                    file.write(quote.encode('utf-8'))

                msg = f"{conf['MESSAGE']['QUOTE_ADDED_PREFIX']} #{nol} {conf['MESSAGE']['QUOTE_ADDED_SUFFIX']}"

                raw_msg = {
                    "TTS": True,
                    "msg": msg,
                    "badges": True,
                    "subscriber": True,
                    "msgid": True,
                    "user": conf['IRC_USERNAME'],
                    "length": conf['IRC_TTS_LEN'],
                    "queuetime": datetime.datetime.now(),
                    "timestamp": str(time.time_ns())
                }
                msg_queue[raw_msg['timestamp']] = [raw_msg['user'], raw_msg['msg']]
                IRC.sendmsg(self, conf['IRC_CHANNEL'], "@"+str(user), msg)


        def quote(self, tags, msg = False):
            """ !q command

                Gets a line from quotes.txt. If a number if given as msg
                it fetch the given line number. If a string is given
                it fetch the best matching line. If nothing is given
                it fetch a random line.
            """

            user = tags['user']
            query = msg.replace('!smartquote', '').strip()

            try:
                if query.isdigit():
                    logging.info('Fetching quote #%s', query)

                    file = open("quotes.txt", "rb")
                    quotes = file.readlines()

                    for line in quotes:
                        if line.decode('utf-8').startswith("#"+str(query)+":"):
                            quote = line
                            break
                    file.close()

                elif query != "":
                    logging.info('Fetching match for %s', query)

                    file = open("quotes.txt", "rb")
                    quotes = file.readlines()
                    matches = process.extract(query, quotes, limit=10)
                    quotes = []

                    for match, score in matches:
                        if score >= 60:
                            quotes.append(match)

                    logging.debug('Quotes: %s', quotes)
                    if len(quotes) >= 5:
                        quote = random.choice(quotes)
                    else:
                        quote = quotes[0]

                else:
                    logging.info('Fetching random quote')

                    with open("quotes.txt", "rb") as file:
                        lines = file.read().splitlines()
                        quote = random.choice(lines)
            except FileNotFoundError:
                logging.error('"quotes.txt does not exists.')
            except IndexError:
                logging.error('Error fetching quote.')

            if not 'quote' in vars():
                logging.info('No quote found.')
                quote = conf['MESSAGE']['QUOTE_NOT_FOUND']
                IRC.sendmsg(self, conf['IRC_CHANNEL'], "", quote)
                return False

            if not isinstance(quote, str):
                quote = quote.decode('utf-8')

            if IRC.check_tts_disabled(self, user):
                logging.info('TTS is disabled')
            elif IRC.check_user_denied(self, user):
                logging.info('User is not allowed to use TTS')
            elif IRC.check_subonly(self, tags):
                logging.info('TTS is sub-only')
            elif IRC.check_modonly(self, tags):
                logging.info('TTS is mod-only')
            elif IRC.check_whitelist(self, user):
                logging.info('User is not on whitelist')
            else:
                logging.info('Sending quote to TTS')
                logging.debug("Quote: %s", quote)
                IRC.sendmsg(self, conf['IRC_CHANNEL'], "", quote)

                quote = quote.rsplit('(', 1)[0]

                raw_msg = {
                    "TTS": True,
                    "msg": quote,
                    "badges": True,
                    "subscriber": True,
                    "msgid": True,
                    "user": conf['IRC_USERNAME'],
                    "length": conf['IRC_TTS_LEN'],
                    "queuetime": datetime.datetime.now(),
                    "timestamp": str(time.time_ns())
                }
                msg_queue[raw_msg['timestamp']] = [raw_msg['user'], raw_msg['msg']]

            return True

        def quickvote(self, msg):
            """ !quickvote command

                Starts or stops the !quickvote function. On stop calculates the 5 most casted
                votes and send them to chat. The highest vote is send to msg_queue.

                :param str msg: The IRC message triggering the command
            """

            if self.quickvote_status:
                logging.debug('Quickvote stopped')

                if self.pollcount == 0:
                    logging.info("Nobody voted")
                    IRC.sendmsg(self, conf['IRC_CHANNEL'], "@chat", conf['MESSAGE']['VOTEEND'])
                    IRC.sendmsg(self, conf['IRC_CHANNEL'], "*", conf['MESSAGE']['VOTENOBODY'])

                    raw_msg = {
                        "TTS": True,
                        "msg": conf['MESSAGE']['VOTENOBODY'],
                        "badges": True,
                        "subscriber": True,
                        "msgid": True,
                        "user": conf['IRC_USERNAME'],
                        "length": conf['IRC_TTS_LEN'],
                        "queuetime": datetime.datetime.now(),
                        "timestamp": str(time.time_ns())
                    }
                    msg_queue[raw_msg['timestamp']] = [raw_msg['user'], raw_msg['msg']]

                    logging.info('The result is: %s', conf['MESSAGE']['VOTENOBODY'])
                    logging.debug('Votemsg: %s', msg)

                    self.quickvote_status = False
                    self.poll = {}
                    return

                logging.info("Counting votes")
                count = 0
                count = Counter(self.poll.values()).most_common(5)
                IRC.sendmsg(self, conf['IRC_CHANNEL'], "@chat", conf['MESSAGE']['VOTEEND'])

                logging.debug(count)

                raw_msg = {
                    "TTS": True,
                    "msg": conf['MESSAGE']['VOTERESULT'] +" "+ str(count[0][0].replace('#','')),
                    "badges": True,
                    "subscriber": True,
                    "msgid": True,
                    "user": conf['IRC_USERNAME'],
                    "length": conf['IRC_TTS_LEN'],
                    "queuetime": datetime.datetime.now(),
                    "timestamp": str(time.time_ns())
                }
                msg_queue[raw_msg['timestamp']] = [raw_msg['user'], raw_msg['msg']]

                logging.info('The result is: %s', conf['MESSAGE']['VOTERESULT'] +" "+ str(count[0]))
                logging.debug('Votemsg: %s', msg)

                for key, value in count:
                    IRC.sendmsg(
                        self,
                        conf['IRC_CHANNEL'], "*",
                        str(key)+" ("+str(value)+ " "+ conf['MESSAGE']['VOTES'] + ")"
                    )

                self.quickvote_status = False
                self.poll = {}
                self.pollcount = 0
                return

            logging.debug('Quickvote started')
            self.quickvote_status = True
            self.votemsg = msg.split('!quickvote', 1)[1].strip()
            if self.votemsg:
                IRC.sendmsg(self,
                    conf['IRC_CHANNEL'], "@chat",
                    conf['MESSAGE']['VOTESTART'] + " (" + str(self.votemsg) + ")"
                )
            else:
                IRC.sendmsg(self, conf['IRC_CHANNEL'], "@chat", conf['MESSAGE']['VOTESTART'])

            return

        def random(self, msg):
            """ !random command

                Read a random line from randomfile and put it into msg_queue
                If no file is given in msg a standard file will be used

                :param str msg: The IRC message triggering the command
                :raise: FileNotFoundError if randomfile does not exists
                :return: True if line was successfully read and added to msg_queue
                :rtype: bool
            """

            randomfile = msg.replace('!random', '').strip().lower()

            if randomfile:
                randomfile = "random_"+str(os.path.basename(randomfile))+".txt"
            else:
                randomfile = "random.txt"

            try:
                with open(randomfile,"r", encoding="utf-8") as file:
                    lines = file.read().splitlines()
                    random_msg = random.choice(lines)
            except FileNotFoundError:
                logging.error('%s not found', randomfile)
                return False

            raw_msg = {
                "TTS": True,
                "msg": random_msg,
                "badges": True,
                "subscriber": True,
                "msgid": True,
                "user": conf['IRC_USERNAME'],
                "length": conf['IRC_TTS_LEN'],
                "queuetime": datetime.datetime.now(),
                "timestamp": str(time.time_ns())
            }
            msg_queue[raw_msg['timestamp']] = [raw_msg['user'], raw_msg['msg']]

            return True

        def ptts(self, msg):
            """ !ptts command

                Add user to tts_allowed list and remove user from tts_denied list

                :param str msg: The IRC message triggering the command
            """

            user = msg.replace('!ptts', '').strip().lower()

            if user.startswith('@'):
                logging.debug('Removing "@" from username')
                user = user.replace('@', '')

            logging.info("Adding %s to whitelist", user)
            self.tts_allowed.append(user)

            if user in self.tts_denied:
                logging.info("Removing %s from deny list", user)
                self.tts_denied.remove(user)

            return

        def dtts(self, msg):
            """ !dtts command

                Add user to tts_denied list and remove user from tts_allowed list

                :param str msg: The IRC message triggering the command
            """

            user = msg.replace('!dtts', '').strip().lower()

            if user.startswith('@'):
                logging.debug('Removing "@" from username')
                user = user.replace('@', '')

            if user not in self.tts_denied:
                logging.info("Adding %s to deny list", user)
                self.tts_denied.append(user)

            if user in self.tts_allowed:
                logging.info("Removing %s from allowed list", user)
                self.tts_allowed.remove(user)

            return

class ThreadingSimpleServer(ThreadingMixIn, HTTPServer):
    """ Threaded HTTP Server """

class HTTPserv(BaseHTTPRequestHandler):
    """Simple HTTP Server"""

    def log_message(self, format, *args): # pylint: disable=redefined-builtin
        """Suppress HTTP log messages"""
        return

    def do_GET(self): # pylint: disable=invalid-name
        """Process GET requests"""
        if self.path == '/':
            self.send_response(200)
            self.send_header('Content-type', 'text/html')
            self.end_headers()
            with open("tts.html", "rb") as file:
                html = file.read()
                self.wfile.write(html)

        elif self.path == '/favicon.ico':
            self.send_response(200)
            self.send_header('Content-type', 'image/x-icon')
            self.end_headers()
            with open("favicon.ico", "rb") as file:
                icon = file.read()
                self.wfile.write(icon)

        elif self.path == '/tts.js':
            self.send_response(200)
            self.send_header('Content-type', 'text/javascript')
            self.end_headers()
            with open("tts.js", "rb") as file:
                html = file.read()
                self.wfile.write(html)

        elif self.path == '/jquery.js':
            self.send_response(200)
            self.send_header('Content-type', 'text/javascript')
            self.end_headers()
            with open("jquery.js", "rb") as file:
                html = file.read()
                self.wfile.write(html)

        elif self.path == '/bootstrap.min.css':
            self.send_response(200)
            self.send_header('Content-type', 'text/css')
            self.end_headers()
            with open("bootstrap.min.css", "rb") as file:
                html = file.read()
                self.wfile.write(html)

        elif self.path.startswith('/tts_queue'):
            tts_json = ""
            tts = {}
            self.send_response(200)
            self.send_header('Content-type', 'text/json')
            self.end_headers()

            usermap = conf['USERMAP']
            sorted_tts = {k: msg_queue[k] for k in sorted(msg_queue, reverse=True)}
            logging.debug(usermap)

            for key in list(sorted_tts.keys()):
                if key not in tts_done:
                    if msg_queue[key][0].lower() in usermap:
                        logging.debug('Using usermap for user: %s (%s)', msg_queue[key][0], usermap[msg_queue[key][0].lower()])
                        tts = {str(key): str(usermap[msg_queue[key][0].lower()]) + " " + str(conf['MESSAGE']['SAYS']) + ":" + str(msg_queue[key][1])}
                    else:
                        logging.debug('No usermap entry found for user: %s', msg_queue[key][0])
                        tts = {str(key): str(msg_queue[key][0]) + " " + str(conf['MESSAGE']['SAYS']) + ":" + str(msg_queue[key][1])}

            tts_json = json.dumps(tts)
            self.wfile.write(bytes(str(tts_json)+"\n", "utf-8"))

        elif self.path.startswith('/tts_done'):
            get_params = parse_qs(self.path)
            if '/tts_done?id' in get_params:
                logging.info("Removing message from queue")
                tts_done.append(get_params['/tts_done?id'][0])
                self.send_response(200)
                self.send_header('Content-type', 'text/plain')
                self.end_headers()
                self.wfile.write(bytes("OK\n", "utf-8"))
            else:
                self.send_response(500)
                self.send_header('Content-type', 'text/plain')
                self.end_headers()
                self.wfile.write(bytes("Internal Server error\n", "utf-8"))

        elif self.path.startswith('/token'):
            data = {}
            data['client_id'] = "ebo548vs6tq54c9zlrgin2yfzzlrrs"
            data['response_type'] = "token"
            data['scope'] = "chat:edit chat:read"
            if conf['HTTP_PORT'] == 80:
                data['redirect_uri'] = "http://localhost/token"
            elif conf['HTTP_PORT'] == 8080:
                data['redirect_uri'] = "http://localhost:8080/token"
            elif conf['HTTP_PORT'] == 3000:
                data['redirect_uri'] = "http://localhost:3000/token"
            else:
                self.send_response(500)
                self.send_header('Content-type', 'text/plain')
                self.end_headers()
                self.wfile.write(bytes("You can only use this function if HTTP_PORT is 80, 8080 or 3000. Please change your port, or use https://www.21x9.org/twitch instead.\n", "utf-8"))
                return False

            try:
                url_values = urllib.parse.urlencode(data)
                url = "https://id.twitch.tv/oauth2/authorize"
                full_url = url + "?" + url_values
                data = urllib.request.urlopen(full_url)
                if data:
                    self.send_response(200)
                    self.send_header('Content-type', 'text/html')
                    self.end_headers()
                    self.wfile.write(bytes("<html><head><title>OAuth Token Generator</title></head><body onload=\"displayCode();\"><div id=\"code\"><a href=\""+str(data.geturl())+"\">Click to start the OAuth process.</a></div><script>function displayCode() { var url = window.location.href; var test = url.indexOf(\"access_token\");if (test != -1) { token = url.substring(42,72); document.getElementById(\"code\").innerHTML = \"<p>oauth:\" + token + \"</p><p>Copy the token into your config.yml and restart the bot.</p>\";}}</script></body></html>\n", "utf-8"))
                else:
                    self.send_response(500)
                    self.send_header('Content-type', 'text/plain')
                    self.end_headers()
                    self.wfile.write(bytes("Could not get OAuth-URL from Twitch\n", "utf-8"))
            except Exception: # pylint: disable=broad-except
                logging.error('Could not fetch OAuth-URL from Twitch.')
        else:
            self.send_response(404)
            self.send_header('Server', 'TTS')
            self.send_header('Content-type', 'text/plain')
            self.end_headers()
            self.wfile.write(bytes("File not found.\n", "utf-8"))

        return

def http_serve_forever(httpd):
    """httpd loop"""
    httpd.serve_forever()

def load_config():
    """Loading config variables"""

    logging.info("Loading configfile")

    try:
        with open("config.yml", "r", encoding="UTF-8") as ymlfile:
            cfg = yaml.load(ymlfile, Loader=yaml.Loader)
    except FileNotFoundError:
        logging.fatal('Your config file is missing, please copy config-dist.yml to config.yml and review your settings.')
        sys.exit(253)

    for section in cfg:
        try:
            logging.debug('Fetching config: %s', section)
            conf['IRC_CHANNEL'] = cfg.get('irc', {}).get('channel', False)
            conf['IRC_USERNAME'] = cfg.get('irc', {}).get('username', False)
            conf['IRC_OAUTH_TOKEN'] = cfg.get('irc', {}).get('oauth_token', False)
            conf['IRC_SERVER'] = cfg.get('irc', {}).get('server', "irc.chat.twitch.tv")
            conf['IRC_CLEARMSG_TIMEOUT'] = cfg.get('irc', {}).get('clearmsg_timeout', 60)

            conf['IRC_SUBONLY'] = cfg.get('bot', {}).get('subonly', False)
            conf['IRC_MODONLY'] = cfg.get('bot', {}).get('modonly', False)
            conf['IRC_TTS_LEN'] = cfg.get('bot', {}).get('message_length', 200)
            conf['TTS_STARTENABLED'] = cfg.get('bot', {}).get('start_enabled', True)

            conf['LOG_LEVEL'] = cfg.get('log', {}).get('level', "INFO")
            conf['HTTP_PORT'] = cfg.get('http', {}).get('port', 80)
            conf['HTTP_BIND'] = cfg.get('http', {}).get('bind', "localhost")

            conf['MESSAGE'] = {}
            conf['MESSAGE']['TOFF'] = cfg.get('messages', {}).get('toff', "TTS is now disabled.")
            conf['MESSAGE']['TON'] = cfg.get('messages', {}).get('ton', "TTS is now active.")
            conf['MESSAGE']['TOO_LONG'] = cfg.get('messages', {}).get('too_long', "Sorry, your message is too long.")
            conf['MESSAGE']['DISABLED'] = cfg.get('messages', {}).get('disabled', "Sorry, TTS is disabled.")
            conf['MESSAGE']['DENIED'] = cfg.get('messages', {}).get('denied', "Sorry, you're not allowed to use TTS.")
            conf['MESSAGE']['SUBONLY'] = cfg.get('messages', {}).get('subonly', "Sorry, TTS is sub-only.")
            conf['MESSAGE']['MODONLY'] = cfg.get('messages', {}).get('modonly', "Sorry, TTS is mod-only.")
            conf['MESSAGE']['READY'] = cfg.get('messages', {}).get('ready', "TTS bot is ready.")
            conf['MESSAGE']['WHITELISTONLY'] = cfg.get('messages', {}).get('whitelist', False)
            conf['MESSAGE']['SAYS'] = cfg.get('messages', {}).get('says', "says")

            conf['MESSAGE']['VOTESTART'] = cfg.get('messages', {}).get('votestart', "Quickvote started. Send #yourchoice to participate.")
            conf['MESSAGE']['VOTEEND'] = cfg.get('messages', {}).get('voteend', "Quickvote ended. The results are:")
            conf['MESSAGE']['VOTENOBODY']  = cfg.get('messages', {}).get('votenobody', "Nobody casted a vote. :(")
            conf['MESSAGE']['VOTERESULT']  = cfg.get('messages', {}).get('voteresult', "Voting has ended. The result is:")
            conf['MESSAGE']['VOTES']  = cfg.get('messages', {}).get('votes', "Votes")

            conf['MESSAGE']['QUOTE_NOT_FOUND'] = cfg.get('messages', {}).get('quotenotfound', "Sorry, no quote found.")
            conf['MESSAGE']['QUOTE_ADDED_PREFIX'] = cfg.get('messages', {}).get('quoteaddedprefix', "Quote:")
            conf['MESSAGE']['QUOTE_ADDED_SUFFIX'] = cfg.get('messages', {}).get('quoteaddedsuffix', "added.")

            conf['USERMAP'] = cfg.get('usermapping', [])

            if 'whitelist' in cfg:
                conf['WHITELIST'] = True
                conf['WHITELIST_USER'] = cfg['whitelist']
            else:
                conf['WHITELIST'] = False

        except KeyError:
            logging.exception('Your config file is invalid, please check and try again.')
            sys.exit(254)

    if conf['WHITELIST']:
        logging.info('Whitelist mode enabled')
        logging.debug('Whitelist: %s', conf['WHITELIST_USER'])

    if not conf['IRC_CHANNEL']:
        raise ValueError('Please add your twitch channel to config.yml.')
    if not conf['IRC_USERNAME']:
        raise ValueError('Please add the bots username to config.yml.')
    if not conf['IRC_OAUTH_TOKEN']:
        conf['IRC_OAUTH_TOKEN'] = "Invalid"
        return conf
    if not conf['IRC_OAUTH_TOKEN'].startswith('oauth:'):
        raise ValueError('Your oauth-token is invalid, it has to start with: "oauth:"')

    return conf

def send_tts_queue():
    """ Send messages to TTS """

    for raw_msg in msg_queue_raw:
        logging.debug('Raw msg: %s', msg_queue_raw)

        now = datetime.datetime.now()
        if now - raw_msg['queuetime'] > datetime.timedelta(seconds=conf['IRC_CLEARMSG_TIMEOUT']):
            logging.debug('clearmsg_timeout reached')
            if raw_msg['timestamp'] not in msg_queue:
                logging.info('Sending TTS message')
                msg_queue[raw_msg['timestamp']] = [raw_msg['user'], raw_msg['msg']]
                logging.debug("msg_queue: %s", msg_queue)
            else:
                logging.debug('Msg is already in queue')

def get_url(path=False):
    """ Generate a valid URL from config values """
    if conf['HTTP_BIND'] == "0.0.0.0":
        url = "localhost"
    else:
        url = conf['HTTP_BIND']

    url = "http://"+str(url)+":"+str(conf['HTTP_PORT'])+"/"

    if path:
        url = url+str(path)

    return url

def check_oauth_token():
    """ Check for valid authentication via Twitch API """
    global conf # pylint: disable=global-statement,invalid-name
    logging.debug('Checking OAuth Token')

    try:
        url = 'https://id.twitch.tv/oauth2/validate'
        oauth = "OAuth "+str(conf['IRC_OAUTH_TOKEN'].replace('oauth:',''))
        request = urllib.request.Request(url)
        request.add_header('Authorization', oauth)
        urllib.request.urlopen(request)
    except HTTPError:
        logging.fatal('Twitch rejected your OAuth Token. Please check and generate a new one.')
        logging.info('Please open http://%s:%s/token to generate your OAuth-Token.', conf['HTTP_BIND'], conf['HTTP_PORT'])

        url = get_url("token")
        webbrowser.open_new_tab(url)
        logging.info('Please complete the OAuth process and add the token into your "config.yml" within the next 5 minutes.')
        time.sleep(300)
        conf = load_config()
        check_oauth_token()

    logging.info('OAuth Token is valid')
    return conf

def main():
    """Main loop"""

    global conf # pylint: disable=global-statement,invalid-name
    conf = load_config()

    lastreload = datetime.datetime.now()
    logging.getLogger().setLevel(conf['LOG_LEVEL'])
    if conf['LOG_LEVEL'] == 'DEBUG':
        sys.tracebacklimit = 5

    logging.info("Starting Webserver")
    httpd = ThreadingSimpleServer((conf['HTTP_BIND'], conf['HTTP_PORT']), HTTPserv)

    http_thread = Thread(target=http_serve_forever, daemon=True, args=(httpd, ))
    http_thread.start()
    check_oauth_token()

    logging.info("Starting IRC bot")
    irc = IRC()

    irc.connect(conf['IRC_SERVER'], 6667, conf['IRC_CHANNEL'], conf['IRC_USERNAME'], conf['IRC_OAUTH_TOKEN'])
    irc.sendmsg(conf['IRC_CHANNEL'], 'MrDestructoid', conf['MESSAGE']['READY'])

    logging.info('Connected and joined')
    url = get_url()
    logging.info("Please open your browser and visit: %s", url)
    webbrowser.open_new_tab(url)

    while True:
        if conf['LOG_LEVEL'] == "DEBUG":
            time.sleep(1)

        try:
            irc.get_response()

            confreload = datetime.datetime.now()
            if confreload - lastreload > datetime.timedelta(seconds=60):
                conf = load_config()
                lastreload = datetime.datetime.now()

                if irc.quickvote_status and irc.votemsg:
                    logging.info('Quickvote is active')
                    irc.sendmsg(conf['IRC_CHANNEL'], "@chat", conf['MESSAGE']['VOTESTART'] + " (" + str(irc.votemsg) + ")")

            if not irc.tts_status:
                continue

            logging.debug('msg_queue_raw: %s', msg_queue_raw)
            send_tts_queue()

        except KeyboardInterrupt:
            httpd.shutdown()
            logging.info('Exiting...')
            os.kill(os.getpid(), signal.SIGTERM)

if __name__ == "__main__":
    logging.basicConfig(level=logging.DEBUG, format='%(asctime)s %(module)s %(threadName)s %(levelname)s: %(message)s')
    sys.tracebacklimit = 3

    conf = {}
    tts_done = []
    msg_queue_raw = []
    msg_queue = {}

    if sys.argv[1:]:
        if sys.argv[1] == "--version":
            print('Simple TTS Bot')
            print('Version 1.3.2')
            sys.exit(1)

    main()