import os
from pathlib import Path

PROJECT_ROOT = Path(__file__).resolve().parent


def _load_dotenv() -> None:
    env_path = PROJECT_ROOT / ".env"
    if not env_path.exists():
        return
    for raw_line in env_path.read_text(encoding="utf-8").splitlines():
        line = raw_line.strip()
        if not line or line.startswith("#") or "=" not in line:
            continue
        key, value = line.split("=", 1)
        key = key.strip()
        value = value.strip().strip('"').strip("'")
        os.environ.setdefault(key, value)


def _parse_admins(value: str) -> list[int]:
    if not value:
        return []
    return [int(part) for part in value.split(",") if part.strip().isdigit()]


_load_dotenv()

Token = os.getenv("VK_TOKEN", "")
SYNC_ADMINS = _parse_admins(os.getenv("SYNC_ADMINS", ""))

_credentials_file = Path(os.getenv("GOOGLE_CREDENTIALS_FILE", "creds.json"))
CREDENTIALS_FILE = str(_credentials_file if _credentials_file.is_absolute() else PROJECT_ROOT / _credentials_file)
SPREADSHEET_ID = os.getenv("GOOGLE_SPREADSHEET_ID", "")
LOG_SPREADSHEET_ID = os.getenv("LOG_SPREADSHEET_ID", "")

if not Token:
    raise RuntimeError("VK_TOKEN is not set")