-- This file and its contents are licensed under the Apache License 2.0.
-- Please see the included NOTICE for copyright information and
-- LICENSE-APACHE for a copy of the license.

CREATE TABLE cluster_test(time timestamptz, temp float, location int);

SELECT create_hypertable('cluster_test', 'time', chunk_time_interval => interval '1 day');

-- Show default indexes
SELECT * FROM test.show_indexes('cluster_test');

-- Create two chunks
INSERT INTO cluster_test VALUES ('2017-01-20T09:00:01', 23.4, 1),
       ('2017-01-21T09:00:01', 21.3, 2);

-- Run cluster
CLUSTER VERBOSE cluster_test USING cluster_test_time_idx;

-- Create a third chunk
INSERT INTO cluster_test VALUES ('2017-01-22T09:00:01', 19.5, 3);

-- Show clustered indexes
SELECT indexrelid::regclass, indisclustered
FROM pg_index
WHERE indisclustered = true ORDER BY 1;

-- Reorder just our table
CLUSTER VERBOSE cluster_test;

-- Show clustered indexes, including new chunk
SELECT indexrelid::regclass, indisclustered
FROM pg_index
WHERE indisclustered = true ORDER BY 1;

-- Reorder all tables (although will only be our test table)
CLUSTER VERBOSE;

-- Change the clustered index
CREATE INDEX ON cluster_test (time, location);

CLUSTER VERBOSE cluster_test using cluster_test_time_location_idx;

-- Show updated clustered indexes
SELECT indexrelid::regclass, indisclustered
FROM pg_index
WHERE indisclustered = true ORDER BY 1;

--check the setting of cluster indexes on hypertables and chunks
ALTER TABLE cluster_test CLUSTER ON cluster_test_time_idx;

SELECT indexrelid::regclass, indisclustered
FROM pg_index
WHERE indisclustered = true
ORDER BY 1,2;

CLUSTER VERBOSE cluster_test;

ALTER TABLE cluster_test SET WITHOUT CLUSTER;

SELECT indexrelid::regclass, indisclustered
FROM pg_index
WHERE indisclustered = true
ORDER BY 1,2;

\set ON_ERROR_STOP 0
CLUSTER VERBOSE cluster_test;
\set ON_ERROR_STOP 1

ALTER TABLE _timescaledb_internal._hyper_1_1_chunk CLUSTER ON _hyper_1_1_chunk_cluster_test_time_idx;

SELECT indexrelid::regclass, indisclustered
FROM pg_index
WHERE indisclustered = true
ORDER BY 1,2;

CLUSTER VERBOSE _timescaledb_internal._hyper_1_1_chunk;

ALTER TABLE _timescaledb_internal._hyper_1_1_chunk SET WITHOUT CLUSTER;

SELECT indexrelid::regclass, indisclustered
FROM pg_index
WHERE indisclustered = true
ORDER BY 1,2;

\set ON_ERROR_STOP 0
CLUSTER VERBOSE _timescaledb_internal._hyper_1_1_chunk;
\set ON_ERROR_STOP 1

-- test alter column type on hypertable with clustering
CREATE TABLE cluster_alter(time timestamp, id text, val int);
CREATE INDEX idstuff ON cluster_alter USING btree (id ASC NULLS LAST, time);

SELECT table_name FROM create_hypertable('cluster_alter', 'time');

INSERT INTO cluster_alter VALUES('2020-01-01', '123', 1);

CLUSTER cluster_alter using idstuff;

--attempt the alter table
ALTER TABLE cluster_alter ALTER COLUMN id TYPE int USING id::int;

CLUSTER cluster_alter;

CLUSTER cluster_alter using idstuff;