""" Django REST Framework Serializers """


from rest_framework import serializers


class UserMappingSerializer(serializers.Serializer):  # pylint: disable=abstract-method
    """ Serializer for User Mapping"""
    provider = None
    username = serializers.SerializerMethodField()
    remote_id = serializers.SerializerMethodField()

    def __init__(self, *args, **kwargs):
        self.provider = kwargs['context'].get('provider', None)
        super().__init__(*args, **kwargs)

    def get_username(self, social_user):
        """ Gets the edx username from a social user """
        return social_user.user.username

    def get_remote_id(self, social_user):
        """ Gets remote id from social user based on provider """
        remote_id_field_name = self.context.get('remote_id_field_name', None)
        if remote_id_field_name:
            return self.provider.get_remote_id_from_field_name(social_user, remote_id_field_name)
        return self.provider.get_remote_id_from_social_auth(social_user)