Custom third party provider id_token values override the expected values

I want only values from user_info API response. Used this configuration.

    input.config.user_info_map = UserInfoMap(
        from_id_token_payload=UserFields(),
        from_user_info_api=UserFields(
            user_id="id",
            email="userPrincipalName",
        ),
    )

But the third_party_user_id and email are not the expected values.

Was able to trace it to https://github.com/supertokens/supertokens-python/blob/master/supertokens_python/recipe/thirdparty/providers/custom.py#L101 where after getting the value from user info API, it again gets the value from id_token and overrides it.

But since, I set from_id_token_payload=UserFields(), that should not be happening.

https://github.com/supertokens/supertokens-python/blob/master/supertokens_python/recipe/thirdparty/providers/custom.py#L235 is setting the value to sub, and since the id_token has sub field set, it overrides the id value from the user_info_api.

I think the logic needs to be something like,

• if from_user_info_api config is set, get values.
• if from_id_token_payload config is set, get values.
• if no values are found, try with default values for from_user_info_api
• if no values are found, try with default values for from_id_token_payload

Right now, the only workaround I can think of

    input.config.user_info_map = UserInfoMap(
        from_id_token_payload=UserFields(
            user_id="XYZ",  # some value which will never be in id_token
            email="XYZ",  # some value which will never be in id_token
        ),
        from_user_info_api=UserFields(
            user_id="id",
            email="userPrincipalName",
        ),
    )

Review supertokens_python/recipe/thirdparty/providers/custom.py around lines 101 and 235, starting with how values from the user info API and ID token are selected. Confirm that an explicitly empty from_id_token_payload does not override configured user info values; done means third_party_user_id and email retain the expected API values.