from .core.scrapers.redfin import RedfinScraper
from .core.scrapers.realtor import RealtorScraper
from .core.scrapers.zillow import ZillowScraper
from .core.scrapers.models import ListingType, Property, Building
from .core.scrapers import ScraperInput
from .exceptions import InvalidSite, InvalidListingType
from typing import Union


_scrapers = {
    "redfin": RedfinScraper,
    "realtor.com": RealtorScraper,
    "zillow": ZillowScraper,
}


def scrape_property(
    location: str,
    site_name: str,
    listing_type: str = "for_sale",  #: for_sale, for_rent, sold
) -> Union[list[Building], list[Property]]:  #: eventually, return pandas dataframe
    if site_name.lower() not in _scrapers:
        raise InvalidSite(f"Provided site, '{site_name}', does not exist.")

    if listing_type.upper() not in ListingType.__members__:
        raise InvalidListingType(
            f"Provided listing type, '{listing_type}', does not exist."
        )

    scraper_input = ScraperInput(
        location=location,
        listing_type=ListingType[listing_type.upper()],
    )

    site = _scrapers[site_name.lower()](scraper_input)

    return site.search()