# -*- coding: utf-8 -*-
# Copyright 2014-2016 OpenMarket Ltd
#
# Licensed 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.


class EventContext(object):
    __slots__ = [
        "current_state_ids",
        "prev_state_ids",
        "state_group",
        "rejected",
        "push_actions",
        "prev_group",
        "delta_ids",
        "prev_state_events",
    ]

    def __init__(self):
        # The current state including the current event
        self.current_state_ids = None
        # The current state excluding the current event
        self.prev_state_ids = None
        self.state_group = None

        self.rejected = False
        self.push_actions = []

        # A previously persisted state group and a delta between that
        # and this state.
        self.prev_group = None
        self.delta_ids = None

        self.prev_state_events = None