"""Service layer for cache-aware fetching of FINN ads and Eiendom.no units."""

import logging

from .ad import fetch_ad_details
from .cache import get_eiendom_unit as get_cached_eiendom_unit
from .cache import get_finn_ad, init_db, save_eiendom_unit, save_finn_ad
from .config import FINN_CACHE_PATH
from .eiendom_no import get_unit
from .models import EiendomUnit, FinnAd

logger = logging.getLogger(__name__)


async def get_or_fetch_ad(finnkode: str, force_refresh: bool = False) -> FinnAd:
    """Get FinnAd from cache or fetch fresh. Never returns None."""
    conn = init_db(FINN_CACHE_PATH)
    ad = None if force_refresh else get_finn_ad(conn, finnkode, ttl_hours=24)
    if ad is None:
        ad = await fetch_ad_details(finnkode)
        save_finn_ad(conn, ad)
    return ad


async def get_or_fetch_eiendom_unit(
    unit_code: str, force_refresh: bool = False
) -> EiendomUnit | None:
    """Get EiendomUnit from cache or fetch fresh."""
    conn = init_db(FINN_CACHE_PATH)
    unit = None if force_refresh else get_cached_eiendom_unit(conn, unit_code, ttl_hours=24)
    if unit is None:
        unit = await get_unit(unit_code)
        if unit is not None:
            save_eiendom_unit(conn, unit)
    return unit