/* Copyright 2014, 2015 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.
 */

CREATE TABLE IF NOT EXISTS state_groups(
    id INTEGER PRIMARY KEY,
    room_id TEXT NOT NULL,
    event_id TEXT NOT NULL
);

CREATE TABLE IF NOT EXISTS state_groups_state(
    state_group INTEGER NOT NULL,
    room_id TEXT NOT NULL,
    type TEXT NOT NULL,
    state_key TEXT NOT NULL,
    event_id TEXT NOT NULL
);

CREATE TABLE IF NOT EXISTS event_to_state_groups(
    event_id TEXT NOT NULL,
    state_group INTEGER NOT NULL,
    CONSTRAINT event_to_state_groups_uniq UNIQUE (event_id)
);

CREATE INDEX IF NOT EXISTS state_groups_id ON state_groups(id);

CREATE INDEX IF NOT EXISTS state_groups_state_id ON state_groups_state(
    state_group
);
CREATE INDEX IF NOT EXISTS state_groups_state_tuple ON state_groups_state(
    room_id, type, state_key
);

CREATE INDEX IF NOT EXISTS event_to_state_groups_id ON event_to_state_groups(
    event_id
);