import datetime
import logging

from tadas.snowflake import facts_source
from tadas.platform import config

logger = logging.getLogger(__name__)


def find_common_max_value(lists: list):
    common = set(lists[0]).intersection(*lists[1:])
    max_common = max(common) if common else None
    logger.info(f'{max_common=}')
    return max_common


def find_latest_available_date(dsps) -> datetime.date:
    available_dates = facts_source.load_available_dates(
        dsps=dsps,
        max_days_back=config.get('DAYS_BACK')
    )
    logger.info(f"{available_dates=}")
    latest_available_date = find_common_max_value(
        lists=list(available_dates.values()))
    logger.info(f"{latest_available_date=}")
    if not latest_available_date:
        raise ValueError(f'No common available dates found in {available_dates}')

    return latest_available_date