import os
from dotenv import load_dotenv

load_dotenv()


def _require(key: str) -> str:
    val = os.environ.get(key)
    if not val:
        raise SystemExit(f"Missing required env var: {key}")
    return val


APP_ID = _require("app_id")
APP_SECRET = _require("app_secret")
DB_HOST = _require("db_host")
DB_PORT = _require("db_port")
DB_NAME = _require("db_name")
DB_USER = _require("db_user")
DB_PW = _require("db_pw")

DATABASE_URL = f"postgresql://{DB_USER}:{DB_PW}@{DB_HOST}:{DB_PORT}/{DB_NAME}"

SYNC_INTERVAL_HOURS = int(os.environ.get("sync_interval_hours", "48"))