#!/usr/bin/env python3

from irctokens import build, Line
from ircrobots import Bot as BaseBot
from ircrobots import Server as BaseServer
from ircrobots import ConnectionParams, SASLUserPass
from random import randint, choice
from tracery.modifiers import base_english
import asyncio
import configparser
import glob
import json
import os
import random
import traceback
import tracery

HELPTEXT = "helo i'm a tracery bot that makes cool things from tracery grammars in your ~/.tracery. see http://tracery.io for more info"
REPOLINK = "https://tildegit.org/ben/tracer"

DB = {}
config = configparser.ConfigParser(
    converters={"list": lambda x: [i.strip() for i in x.split(",")]}
)
config.read("config.ini")
bot = config["irc"]

# read account info if it exists
if os.path.isfile("account.ini"):
    account = configparser.ConfigParser()
    account.read("account.ini")
    account = account["nickserv"]


def grammar(rules):
    try:
        res = tracery.Grammar(rules)
        res.add_modifiers(base_english)
        return res
    except Exception as e:
        print(e)


def load_rules(path):
    try:
        with open(path) as f:
            return json.loads(f.read())
    except Exception as e:
        print(e)


def populate():
    global DB
    DB = {}
    for p in glob.glob("/home/*/.tracery/*"):
        name, ext = os.path.splitext(p)
        name = os.path.basename(name)
        if name.startswith(".") or ext not in (".json", ""):
            continue
        if p in DB:
            DB[name].append(p)
        else:
            DB[name] = [p]


populate()


def generate(rule):
    populate()
    if rule in DB:
        g = random.choice(DB[rule])
        return grammar(load_rules(g)).flatten("#origin#")


def listify(col):
    if type(col) == type([]):
        return col
    else:
        return [col]


def shuffle(col):
    a = random.choice(list(col))
    b = random.choice(list(col))
    if "origin" in [a, b]:
        return col
    col[a], col[b] = col[b], col[a]
    return col


def fuse(argv):
    populate()
    raw = {}
    for gk in argv:
        if gk in DB:
            g = grammar(load_rules(random.choice(DB[gk]))).raw
            for k in g:
                if k in raw:
                    raw[k] = listify(raw[k]) + listify(g[k])
                else:
                    raw[k] = g[k]
    for i in range(20):
        raw = shuffle(raw)
    return grammar(raw).flatten("#origin#")


def think(line):
    chan = line.params[0]
    words = line.params[1].split(" ")

    if len(words) > 0:
        if words[0] == "!!list":
            res = ""
            for k in DB:
                res += k + " "
            return res
        elif words[0] == "!!fuse":
            if "|" in words:
                res = fuse(words[1 : words.index("|")])
                if res:
                    return " ".join(words[words.index("|") + 1 :]) + " " + res
            else:
                res = fuse(words[1:])
                if res:
                    return res
        elif words[0] == "!!source":
            return REPOLINK
        elif words[0] == "!botlist" or words[0] == "!!help":
            return HELPTEXT
        elif words[0][0:2] == "!!":
            res = generate(words[0][2:])
            if res:
                if len(words) >= 3:
                    if words[1] == "|":
                        return " ".join(words[2:]) + " " + res
                    else:
                        return res
                else:
                    return res


class Server(BaseServer):
    async def line_send(self, line: Line):
        print(f"{self.name} > {line.format()}")

    async def line_read(self, line: Line):
        print(f"{self.name} < {line.format()}")
        if line.command == "001":
            await self.send(build("JOIN", [",".join(bot.getlist("channels"))]))
            await self.send(build("MODE", [self.nickname, "+B"]))

        if line.command == "INVITE":
            await self.send(build("JOIN", [line.params[1]]))

        if (
            line.command == "PRIVMSG"
            and self.has_channel(line.params[0])
            and self.has_user(line.hostmask.nickname)
            and not line.hostmask is None
            and not self.casefold(line.hostmask.nickname) == self.nickname_lower
            and not ("batch" in line.tags and line.tags["batch"] == "1")
            and not "inspircd.org/bot" in line.tags
        ):
            try:
                response = think(line)
                if response is not None:
                    await self.send(build("PRIVMSG", [line.params[0], response]))
            except Exception as e:
                print("ERROR", line)
                print(e)
                traceback.print_exc()


class Bot(BaseBot):
    def create_server(self, name: str):
        return Server(self, name)


async def main():
    ircrobot = Bot()

    params = ConnectionParams(
        bot["nick"],
        host=bot["server"],
        port=bot.getint("port"),
        tls=bot.getboolean("tls"),
        sasl=SASLUserPass(account["username"], account["password"]),
    )

    await ircrobot.add_server("tilde", params)
    await ircrobot.run()


if __name__ == "__main__":
    asyncio.run(main())