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/* Copyright 2022 The Matrix.org Foundation C.I.C
*
* 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.
*/
-- Allow multiple receipts per user per room via a nullable thread_id column.
--
-- SQLite doesn't support modifying constraints to an existing table, so it must
-- be recreated.
-- Create the new tables.
CREATE TABLE receipts_linearized_new (
stream_id BIGINT NOT NULL,
room_id TEXT NOT NULL,
receipt_type TEXT NOT NULL,
user_id TEXT NOT NULL,
event_id TEXT NOT NULL,
thread_id TEXT,
event_stream_ordering BIGINT,
data TEXT NOT NULL,
CONSTRAINT receipts_linearized_uniqueness UNIQUE (room_id, receipt_type, user_id),
CONSTRAINT receipts_linearized_uniqueness_thread UNIQUE (room_id, receipt_type, user_id, thread_id)
);
CREATE TABLE receipts_graph_new (
room_id TEXT NOT NULL,
receipt_type TEXT NOT NULL,
user_id TEXT NOT NULL,
event_ids TEXT NOT NULL,
thread_id TEXT,
data TEXT NOT NULL,
CONSTRAINT receipts_graph_uniqueness UNIQUE (room_id, receipt_type, user_id),
CONSTRAINT receipts_graph_uniqueness_thread UNIQUE (room_id, receipt_type, user_id, thread_id)
);
-- Drop the old indexes.
DROP INDEX IF EXISTS receipts_linearized_id;
DROP INDEX IF EXISTS receipts_linearized_room_stream;
DROP INDEX IF EXISTS receipts_linearized_user;
-- Copy the data.
INSERT INTO receipts_linearized_new (stream_id, room_id, receipt_type, user_id, event_id, event_stream_ordering, data)
SELECT stream_id, room_id, receipt_type, user_id, event_id, event_stream_ordering, data
FROM receipts_linearized;
INSERT INTO receipts_graph_new (room_id, receipt_type, user_id, event_ids, data)
SELECT room_id, receipt_type, user_id, event_ids, data
FROM receipts_graph;
-- Drop the old tables.
DROP TABLE receipts_linearized;
DROP TABLE receipts_graph;
-- Rename the tables.
ALTER TABLE receipts_linearized_new RENAME TO receipts_linearized;
ALTER TABLE receipts_graph_new RENAME TO receipts_graph;
-- Create the indices.
CREATE INDEX receipts_linearized_id ON receipts_linearized( stream_id );
CREATE INDEX receipts_linearized_room_stream ON receipts_linearized( room_id, stream_id );
CREATE INDEX receipts_linearized_user ON receipts_linearized( user_id );
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