/* 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 event_content_hashes (
    event_id TEXT,
    algorithm TEXT,
    hash BLOB,
    CONSTRAINT uniqueness UNIQUE (event_id, algorithm)
);

CREATE INDEX IF NOT EXISTS event_content_hashes_id ON event_content_hashes(
    event_id
);


CREATE TABLE IF NOT EXISTS event_reference_hashes (
    event_id TEXT,
    algorithm TEXT,
    hash BLOB,
    CONSTRAINT uniqueness UNIQUE (event_id, algorithm)
);

CREATE INDEX IF NOT EXISTS event_reference_hashes_id ON event_reference_hashes (
    event_id
);


CREATE TABLE IF NOT EXISTS event_signatures (
    event_id TEXT,
    signature_name TEXT,
    key_id TEXT,
    signature BLOB,
    CONSTRAINT uniqueness UNIQUE (event_id, signature_name, key_id)
);

CREATE INDEX IF NOT EXISTS event_signatures_id ON event_signatures (
    event_id
);


CREATE TABLE IF NOT EXISTS event_edge_hashes(
    event_id TEXT,
    prev_event_id TEXT,
    algorithm TEXT,
    hash BLOB,
    CONSTRAINT uniqueness UNIQUE (
        event_id, prev_event_id, algorithm
    )
);

CREATE INDEX IF NOT EXISTS event_edge_hashes_id ON event_edge_hashes(
    event_id
);