/* 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.
 */
 
-- SQLite needs to rebuild indices which use partial indices on Postgres, but
-- previously did not use them on SQLite.

-- Drop each index that was added with register_background_index_update AND specified
-- a where_clause (that existed before this delta).

-- From events_bg_updates.py
DROP INDEX IF EXISTS event_contains_url_index;
-- There is also a redactions_censored_redacts index, but that gets dropped.
DROP INDEX IF EXISTS redactions_have_censored_ts;
-- There is also a PostgreSQL only index (event_contains_url_index2)
-- which gets renamed to event_contains_url_index.

-- From roommember.py
DROP INDEX IF EXISTS room_memberships_user_room_forgotten;

-- From presence.py
DROP INDEX IF EXISTS presence_stream_state_not_offline_idx;

-- From media_repository.py
DROP INDEX IF EXISTS local_media_repository_url_idx;

-- From event_push_actions.py
DROP INDEX IF EXISTS event_push_actions_highlights_index;
-- There's also a event_push_actions_stream_highlight_index which was previously
-- PostgreSQL-only.

-- From state.py
DROP INDEX IF EXISTS current_state_events_member_index;

-- Re-insert the background jobs to re-create the indices.
INSERT INTO background_updates (ordering, update_name, progress_json, depends_on) VALUES
  (7209, 'event_contains_url_index', '{}', NULL),
  (7209, 'redactions_have_censored_ts_idx', '{}', NULL),
  (7209, 'room_membership_forgotten_idx', '{}', NULL),
  (7209, 'presence_stream_not_offline_index', '{}', NULL),
  (7209, 'local_media_repository_url_idx', '{}', NULL),
  (7209, 'event_push_actions_highlights_index', '{}', NULL),
  (7209, 'event_push_actions_stream_highlight_index', '{}', NULL),
  (7209, 'current_state_members_idx', '{}', NULL)
ON CONFLICT (update_name) DO NOTHING;