"""Interface to the ows-carveouts microservice."""
from oto import response
from owsrequest import request

from product_digital.constants import services


def get_instant_grats_stores():
    """Get details about Instant Grats allowed stores.

    Returns:
        response.Response: status of call and dictionary of results.
    """
    ows_carveouts_response = request.get(
        services.OWS_CARVEOUTS,
        '/stores/grats')
    try:
        response_body = ows_carveouts_response.json()
    except ValueError:
        return response.create_fatal_response(
            ows_carveouts_response.content.decode())

    if ows_carveouts_response.status_code != 200:
        return response.create_error_response(
            status=ows_carveouts_response.status_code,
            code=response_body.get('code'),
            message=response_body.get('message'))

    return response.Response(message=response_body)