#!/usr/bin/env python3

import asyncio, os, importlib, inspect

from irctokens import build, Line
from ircrobots import Bot as BaseBot
from ircrobots import Server as BaseServer
from ircrobots import ConnectionParams, SASLUserPass, SASLSCRAM

from auth import username, password
import shared


def is_admin(func):
    async def decorator(self, channel, nick, msg):
        if (
            nick.lower() in self.users
            and self.users[nick.lower()].account in self.admins
        ):
            await func(self, channel, nick, msg)
        else:
            await message(self, channel, "you do not have permission to do that")

    return decorator


# def is_chanop(func):


def command(commandname):
    def decorator(func):
        shared.commands[commandname] = func
        return func

    return decorator


def listener(listenername):
    def decorator(func):
        shared.listeners.append((listenername, func))
        return func

    return decorator


def rawm(rname):
    def decorator(func):
        shared.rawm[rname] = func
        return func

    return decorator


async def message(self, channel, msg):
    modname = os.path.splitext(os.path.basename(inspect.stack()[:2][-1].filename))[0]
    await self.send(build("PRIVMSG", [channel, f"[\x036{modname}\x0f] {msg}"]))


class Server(BaseServer):
    async def line_read(self, line: Line):
        if "on_" + line.command.lower() in dir(self):
            asyncio.create_task(
                self.__getattribute__("on_" + line.command.lower())(line)
            )
        for listener in shared.listeners:
            if listener[0] == line.command:
                asyncio.create_task(listener[1](self, line))

    async def line_preread(self, line: Line):
        print(f"{self.name} < {line.format()}")

    async def line_presend(self, line: Line):
        print(f"{self.name} > {line.format()}")

    async def on_001(self, line):
        asyncio.create_task(self.load_modules())

    async def load_modules(self):
        for i in [s for s in os.listdir("modules") if ".py" in s and ".swp" not in s]:
            i = i[:-3]
            m = importlib.import_module("modules." + i)
            asyncio.create_task(m.init(self))
            shared.modules[i] = m

    async def message(self, channel, msg):
        modname = os.path.splitext(os.path.basename(inspect.stack()[:2][-1].filename))[0]
        await self.send(build("PRIVMSG", [channel, f"[\x036{modname}\x0f] {msg}"]))

    async def on_privmsg(self, line):
        if line.tags and "batch" in line.tags and line.tags["batch"] == "1":
            return

        channel = line.params[0]
        nick = line.source.split("!")[0]
        msg = line.params[1]

        if channel == self.nickname:
            channel = nick

        await self.handle_rawm(channel, nick, msg)
        await self.handle_command(channel, nick, msg)

    async def handle_rawm(self, channel, nick, msg):
        for i in shared.rawm:
            await shared.rawm[i](self, channel, nick, msg)

    async def handle_command(self, channel, nick, msg):
        if msg[: len(shared.prefix)] == shared.prefix:
            msg = msg[len(shared.prefix) :]
            cmd = msg.split(" ")[0]
            msg = msg[len(cmd) + 1 :]
            if len(cmd) < 1:
                return

            if cmd in shared.commands:
                await shared.commands[cmd](self, channel, nick, msg)
                return

            results = [i for i in shared.commands if i.startswith(cmd)]
            if len(results) == 1:
                await shared.commands[results[0]](self, channel, nick, msg)


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


async def main():
    bot = Bot()

    sasl_params = SASLUserPass(username, password)
    params = ConnectionParams(
        "balun", host="irc.tilde.chat", port=6697, tls=True, sasl=sasl_params
    )

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


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