import os
import tomllib
from typing import Self

import discord
from pydantic import BaseModel


class PostTarget(BaseModel):
    server: str
    channel: str
    thread: str

    def get(self, client: discord.Client) -> discord.Thread:
        """
        Zielkanal für Posts finden
        """

        guilds = [guild for guild in client.guilds if guild.name == self.server]
        assert len(guilds) == 1

        channels = [
            channel
            for channel in guilds[0].channels
            if isinstance(channel, discord.TextChannel | discord.ForumChannel)
            and channel.name == self.channel
        ]
        assert len(channels) == 1

        threads = [
            thread for thread in channels[0].threads if thread.name == self.thread
        ]
        assert len(threads) == 1

        return threads[0]


class Post(BaseModel):
    target: PostTarget
    users: list[int]


class Config(BaseModel):
    discord_token: str
    post: Post

    @classmethod
    def get(cls) -> Self:
        cfg_path = os.getenv(
            key="CONFIG_PATH",
            default="/usr/local/etc/lenaverse-bot/lenaverse-bot.toml",
        )

        with open(cfg_path, "rb") as cfg_file:
            return cls.model_validate(tomllib.load(cfg_file))


CONFIG = Config.get()