"""Logic for retrieving highwatermark dates."""
from oto import response as oto_response

from analytics.utils import data_availability


def get_highwatermark(highwatermark_type):
    """Return highwatermark for to the store, videos and downloads.

    Returns:
        oto.Response dict: {'highwatermark':yyyy-mm-dd}.

    """
    available_feeds = data_availability.get_available_feeds()
    highwatermark = None
    if highwatermark_type == "streams":
        highwatermark = data_availability.get_max_available_date(available_feeds)
    elif highwatermark_type == "videos":
        highwatermark = data_availability.get_videos_max_available_date(available_feeds)
    elif highwatermark_type == "downloads":
        highwatermark = data_availability.get_downloads_max_available_date(
            available_feeds
        )

    return oto_response.Response({"highwatermark": highwatermark})