#
# Copyright (C) 2021 Vaticle
#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
#
from abc import ABC, abstractmethod
from typing import Mapping, Set

from typedb.api.answer.concept_map import ConceptMap
from typedb.api.logic.rule import Rule


class Explanation(ABC):

    @abstractmethod
    def rule(self) -> Rule:
        pass

    @abstractmethod
    def conclusion(self) -> ConceptMap:
        pass

    @abstractmethod
    def condition(self) -> ConceptMap:
        pass

    @abstractmethod
    def variable_mapping(self) -> Mapping[str, Set[str]]:
        pass
