from app.models import AdBanner


def get_banners(position=None):
    query = AdBanner.query.filter_by(is_active=True).order_by(AdBanner.sort_order, AdBanner.id)
    if position:
        query = query.filter_by(position=position)
    return query.all()


def get_banners_by_position():
    banners = get_banners()
    grouped = {}
    for banner in banners:
        grouped.setdefault(banner.position, []).append(banner)
    return grouped