from apollo_utils.service.schemas.fields.list import SplitUniqueListField
from marshmallow import fields, validate

from server.constants.delphi.videos.expand_to import VideosExpandTo


class DelphiExpandToMixin:
    expand_to = SplitUniqueListField(fields.String(required=True, validate=validate.OneOf(VideosExpandTo.ALL_FIELDS)))