import os

from ..marshmallow import EXCLUDE, RAISE
from ..marshmallow import Schema as MarshmallowSchema

MARSHMALLOW_UKNOWN_EXCLUDE = os.environ.get("STARKNET_PY_MARSHMALLOW_UKNOWN_EXCLUDE")


class Schema(MarshmallowSchema):
    class Meta:
        unknown = (
            EXCLUDE if (MARSHMALLOW_UKNOWN_EXCLUDE or "").lower() == "true" else RAISE
        )