"""Ładowanie konfiguracji z .env (proste i wystarczające dla jednego serwera)."""
from __future__ import annotations
import os
from dataclasses import dataclass
from dotenv import load_dotenv

load_dotenv()


def _req(key: str) -> str:
    val = os.getenv(key)
    if not val or val.startswith("wklej") or val.startswith("000000"):
        raise RuntimeError(f"Brak/placeholder w .env: {key}")
    return val


@dataclass(frozen=True)
class Config:
    # Discord
    token: str
    guild_id: int
    chan_chat: int
    chan_events: int
    gm_role_id: int
    # RCON
    rcon_host: str
    rcon_port: int
    rcon_password: str
    # Log
    log_mode: str          # "local" | "sftp"
    log_path: str
    sftp_host: str | None
    sftp_port: int
    sftp_user: str | None
    sftp_password: str | None

    @staticmethod
    def load() -> "Config":
        mode = os.getenv("LOG_MODE", "local").lower()
        return Config(
            token=_req("DISCORD_TOKEN"),
            guild_id=int(_req("DISCORD_GUILD_ID")),
            chan_chat=int(_req("CHAN_CHAT")),
            chan_events=int(_req("CHAN_EVENTS")),
            gm_role_id=int(_req("GM_ROLE_ID")),
            rcon_host=_req("RCON_HOST"),
            rcon_port=int(os.getenv("RCON_PORT", "25575")),
            rcon_password=_req("RCON_PASSWORD"),
            log_mode=mode,
            log_path=_req("LOG_PATH"),
            sftp_host=os.getenv("SFTP_HOST"),
            sftp_port=int(os.getenv("SFTP_PORT", "22")),
            sftp_user=os.getenv("SFTP_USER"),
            sftp_password=os.getenv("SFTP_PASSWORD"),
        )