"""Runtime settings stored in the DB (key/value), with env fallbacks."""
from __future__ import annotations

import json
from typing import Any, Optional

from sqlmodel import Session

from config import settings as env_settings
from database import engine
from models.setting import Setting

KEY_UPDATE_INTERVAL = "update_check_interval_minutes"


def get(session: Session, key: str, default: Any = None) -> Any:
    row = session.get(Setting, key)
    if row is None:
        return default
    try:
        return json.loads(row.value)
    except json.JSONDecodeError:
        return default


def set_value(session: Session, key: str, value: Any) -> None:
    row = session.get(Setting, key)
    encoded = json.dumps(value)
    if row is None:
        session.add(Setting(key=key, value=encoded))
    else:
        row.value = encoded
        session.add(row)
    session.commit()


def get_update_interval(session: Optional[Session] = None) -> int:
    """Effective update-check interval in minutes (DB override or env default)."""
    if session is None:
        with Session(engine) as own:
            return get_update_interval(own)
    val = get(session, KEY_UPDATE_INTERVAL)
    if isinstance(val, int) and val > 0:
        return val
    return env_settings.UPDATE_CHECK_INTERVAL_MINUTES