#!/usr/bin/env python3

import irc.bot
import irc.strings
import configparser

from expiringdict import ExpiringDict

configfile = 'spamkicker.ini'

class BotConfig:
    def __init__(self, config):
        general = config['general']

        connections = []
        for connection in general['connections'].split():
            connections.append((config[connection]['server'], int(config[connection]['port'])))

        self.server_list=connections
        self.nickname=general['nick']
        self.realname=general['real']
        self.honeypots=[x.strip() for x in general['honeypots'].split(',')]
        self.announce=[x.strip() for x in general['announce'].split(',')]
        self.password=general['password']
        self.ban_type=general['ban_type']
        self.ban_duration=general['ban_duration']

    def __repr__(self):
        return "BotConfig(server_list={},nickname='{}',realname='{}',honeypots={},announce={},password='{}',ban_type='{}',ban_duration='{}')".format(self.server_list, self.nickname, self.realname, self.honeypots, self.announce, self.password, self.ban_type, self.ban_duration)

class SpamKickerBot(irc.bot.SingleServerIRCBot):
    def __init__(self, botconfig):
        self.botconfig = botconfig
        irc.bot.SingleServerIRCBot.__init__(self, botconfig.server_list, botconfig.nickname, botconfig.realname)
        self.spammers = ExpiringDict(max_age_seconds=300, max_len=100)

    def on_nicknameinuse(self, c, e):
        c.nick(c.get_nickname() + "_")
    
    def on_welcome(self, c, e):
        for channel in self.botconfig.honeypots:
            c.join(channel)
        for channel in self.botconfig.announce:
            c.join(channel)
        c.send_raw("OPER {} {}".format(c.get_nickname(), self.botconfig.password))

    def on_privmsg(self, c, e):
        self.flag_spammer(c, e.source)

    def on_pubmsg(self, c, e):
        if e.target in self.botconfig.honeypots:
            self.flag_spammer(c, e.source)


    def flag_spammer(self, c, source):
        if source in self.spammers:
            print("Spammer already flagged")
        else:
            self.spammers[source] = 1
            print("Spammer flagged: {}".format(source.nick))
            for target in self.botconfig.announce:
                c.privmsg(target, 'Spammer identified: {} ({})'.format(source.nick, source.userhost))
            if self.botconfig.ban_type == 'GLINE':
                spec = source.userhost
            elif self.botconfig.ban_type == 'ZLINE':
                spec = source.host
            else:
                spec = source.userhost # Just in case, right?
            command = ' '.join(filter(None, [self.botconfig.ban_type, spec, self.botconfig.ban_duration, ':SpamKicker']))
            print(command)
            c.send_raw(command)

def main():
    config = configparser.ConfigParser()
    config.read(configfile)

    botconfig = BotConfig(config)

    bot = SpamKickerBot(botconfig)
    bot.start()

if __name__ == "__main__":
    main()