"""Interface for the ows-track microservice."""

from owsrequest import request

from sound_recordings.constants import service_name


class BadGateway(Exception):
    """Downstream from ows-track exception."""

    pass


def claim_isrc():
    """Claim new ISRC."""
    claim_new_isrc_response = request.post(
        service_name.OWS_TRACK,
        '/claim_new_isrc')
    status_code = claim_new_isrc_response.status_code
    if status_code in (502, 504):
        raise BadGateway()
    elif status_code not in (200, 201, 204):
        raise Exception(f'Unable to claim an isrc. HTTP {status_code} from ows-track')
    return claim_new_isrc_response.json()['isrc']