-- This test file has an alternative output because of error messages vary for PG13
SHOW server_version \gset
SELECT substring(:'server_version', '\d+')::int <= 13 AS server_version_le_13;

CREATE SCHEMA generated_identities;
SET search_path TO generated_identities;
SET client_min_messages to ERROR;
SET citus.shard_replication_factor TO 1;

SELECT 1 from citus_add_node('localhost', :master_port, groupId=>0);

CREATE TABLE smallint_identity_column (
    a smallint GENERATED BY DEFAULT AS IDENTITY
);

CREATE VIEW verify_smallint_identity_column AS
SELECT attidentity, attgenerated FROM pg_attribute WHERE attrelid = 'smallint_identity_column'::regclass AND attname = 'a';

BEGIN;
    SELECT create_distributed_table('smallint_identity_column', 'a');
    SELECT * FROM verify_smallint_identity_column;
ROLLBACK;

BEGIN;
    SELECT create_reference_table('smallint_identity_column');
    SELECT * FROM verify_smallint_identity_column;
ROLLBACK;

BEGIN;
    SELECT citus_add_local_table_to_metadata('smallint_identity_column');
    SELECT * FROM verify_smallint_identity_column;
ROLLBACK;

SELECT create_distributed_table_concurrently('smallint_identity_column', 'a');
SELECT * FROM verify_smallint_identity_column;
SELECT result FROM run_command_on_workers('INSERT INTO generated_identities.smallint_identity_column (a) VALUES (DEFAULT);');

DROP TABLE smallint_identity_column CASCADE;

CREATE TABLE int_identity_column (
    a int GENERATED BY DEFAULT AS IDENTITY
);

CREATE VIEW verify_int_identity_column AS
SELECT attidentity, attgenerated FROM pg_attribute WHERE attrelid = 'int_identity_column'::regclass AND attname = 'a';

BEGIN;
    SELECT create_distributed_table('int_identity_column', 'a');
    SELECT * FROM verify_int_identity_column;
ROLLBACK;

BEGIN;
    SELECT create_reference_table('int_identity_column');
    SELECT * FROM verify_int_identity_column;
ROLLBACK;

BEGIN;
    SELECT citus_add_local_table_to_metadata('int_identity_column');
    SELECT * FROM verify_int_identity_column;
ROLLBACK;

SELECT create_distributed_table_concurrently('int_identity_column', 'a');
SELECT * FROM verify_int_identity_column;
SELECT result FROM run_command_on_workers('INSERT INTO generated_identities.int_identity_column (a) VALUES (DEFAULT);');

DROP TABLE int_identity_column CASCADE;

CREATE TABLE reference_int_identity_column (
    a int GENERATED BY DEFAULT AS IDENTITY
);
SELECT create_reference_table('reference_int_identity_column');
INSERT INTO generated_identities.reference_int_identity_column (a) VALUES (DEFAULT) RETURNING a;
SELECT result FROM run_command_on_workers('INSERT INTO generated_identities.reference_int_identity_column (a) VALUES (DEFAULT);');

CREATE TABLE citus_local_int_identity_column (
    a int GENERATED BY DEFAULT AS IDENTITY
);
SELECT citus_add_local_table_to_metadata('citus_local_int_identity_column');
INSERT INTO generated_identities.citus_local_int_identity_column (a) VALUES (DEFAULT) RETURNING a;
SELECT result FROM run_command_on_workers('INSERT INTO generated_identities.citus_local_int_identity_column (a) VALUES (DEFAULT);');

DROP TABLE reference_int_identity_column, citus_local_int_identity_column;

RESET citus.shard_replication_factor;


CREATE TABLE bigint_identity_column (
    a bigint GENERATED BY DEFAULT AS IDENTITY,
    b int
);
SELECT citus_add_local_table_to_metadata('bigint_identity_column');
DROP TABLE bigint_identity_column;

CREATE TABLE bigint_identity_column (
    a bigint GENERATED BY DEFAULT AS IDENTITY,
    b int
);
SELECT create_distributed_table('bigint_identity_column', 'a');

\d bigint_identity_column

\c - - - :worker_1_port
SET search_path TO generated_identities;
SET client_min_messages to ERROR;

INSERT INTO bigint_identity_column (b)
SELECT s FROM generate_series(1,10) s;

\d generated_identities.bigint_identity_column

\c - - - :master_port
SET search_path TO generated_identities;
SET client_min_messages to ERROR;

INSERT INTO bigint_identity_column (b)
SELECT s FROM generate_series(11,20) s;

SELECT * FROM bigint_identity_column ORDER BY B ASC;

-- table with identity column cannot be altered.
SELECT alter_distributed_table('bigint_identity_column', 'b');

-- table with identity column cannot be undistributed.
SELECT undistribute_table('bigint_identity_column');

DROP TABLE bigint_identity_column;

-- create a partitioned table for testing.
CREATE TABLE partitioned_table (
    a bigint CONSTRAINT myconname GENERATED BY DEFAULT AS IDENTITY (START WITH 10 INCREMENT BY 10),
    b bigint GENERATED ALWAYS AS IDENTITY (START WITH 10 INCREMENT BY 10),
    c int
)
PARTITION BY RANGE (c);
CREATE TABLE partitioned_table_1_50 PARTITION OF partitioned_table FOR VALUES FROM (1) TO (50);
CREATE TABLE partitioned_table_50_500 PARTITION OF partitioned_table FOR VALUES FROM (50) TO (1000);

SELECT create_distributed_table('partitioned_table', 'a');

\d partitioned_table

\c - - - :worker_1_port
SET search_path TO generated_identities;
SET client_min_messages to ERROR;

\d generated_identities.partitioned_table

insert into partitioned_table (c) values (1);

insert into partitioned_table (c) SELECT 2;

INSERT INTO partitioned_table (c)
SELECT s FROM generate_series(3,7) s;

\c - - - :master_port
SET search_path TO generated_identities;
SET client_min_messages to ERROR;

INSERT INTO partitioned_table (c)
SELECT s FROM generate_series(10,20) s;

INSERT INTO partitioned_table (a,c) VALUES (998,998);

INSERT INTO partitioned_table (a,b,c) OVERRIDING SYSTEM VALUE VALUES (999,999,999);

SELECT * FROM partitioned_table ORDER BY c ASC;

-- alter table .. alter column .. add is unsupported
ALTER TABLE partitioned_table ALTER COLUMN g ADD GENERATED ALWAYS AS IDENTITY;

-- alter table .. alter column is unsupported
ALTER TABLE partitioned_table ALTER COLUMN b TYPE int;

DROP TABLE partitioned_table;

-- create a table for reference table testing.
CREATE TABLE reference_table (
    a bigint CONSTRAINT myconname GENERATED BY DEFAULT AS IDENTITY (START WITH 10 INCREMENT BY 10),
    b bigint GENERATED ALWAYS AS IDENTITY (START WITH 10 INCREMENT BY 10) UNIQUE,
    c int
);

SELECT create_reference_table('reference_table');

\d reference_table

\c - - - :worker_1_port
SET search_path TO generated_identities;

\d generated_identities.reference_table

INSERT INTO reference_table (c)
SELECT s FROM generate_series(1,10) s;

--on master
select * from reference_table;

\c - - - :master_port
SET search_path TO generated_identities;
SET client_min_messages to ERROR;

INSERT INTO reference_table (c)
SELECT s FROM generate_series(11,20) s;

SELECT * FROM reference_table ORDER BY c ASC;

DROP TABLE reference_table;

CREATE TABLE color (
    color_id BIGINT GENERATED ALWAYS AS IDENTITY UNIQUE,
    color_name VARCHAR NOT NULL
);

-- https://github.com/citusdata/citus/issues/6694
CREATE USER identity_test_user;
GRANT INSERT ON color TO identity_test_user;
GRANT USAGE ON SCHEMA generated_identities TO identity_test_user;

SET ROLE identity_test_user;
SELECT create_distributed_table('color', 'color_id');

SET ROLE postgres;
SET citus.shard_replication_factor TO 1;
SELECT create_distributed_table_concurrently('color', 'color_id');
RESET citus.shard_replication_factor;

\c - identity_test_user - :worker_1_port
SET search_path TO generated_identities;
SET client_min_messages to ERROR;

INSERT INTO color(color_name) VALUES ('Blue');

\c - postgres - :master_port
SET search_path TO generated_identities;
SET client_min_messages to ERROR;
SET citus.next_shard_id TO 12400000;

DROP TABLE Color;
CREATE TABLE color (
    color_id BIGINT GENERATED ALWAYS AS IDENTITY UNIQUE,
    color_name VARCHAR NOT NULL
) USING columnar;
SELECT create_distributed_table('color', 'color_id');
INSERT INTO color(color_name) VALUES ('Blue');
\d+ color

\c - - - :worker_1_port
SET search_path TO generated_identities;
\d+ color
INSERT INTO color(color_name) VALUES ('Red');
-- alter sequence .. restart
ALTER SEQUENCE color_color_id_seq RESTART WITH 1000;
-- override system value
INSERT INTO color(color_id, color_name) VALUES (1, 'Red');
INSERT INTO color(color_id, color_name) VALUES (NULL, 'Red');
INSERT INTO color(color_id, color_name) OVERRIDING SYSTEM VALUE VALUES (1, 'Red');
-- update null or custom value
UPDATE color SET color_id = NULL;
UPDATE color SET color_id = 1;

\c - postgres - :master_port
SET search_path TO generated_identities;
SET client_min_messages to ERROR;


-- alter table .. add column .. GENERATED .. AS IDENTITY
ALTER TABLE color ADD COLUMN color_id BIGINT GENERATED ALWAYS AS IDENTITY;

-- alter sequence .. restart
ALTER SEQUENCE color_color_id_seq RESTART WITH 1000;
-- override system value
INSERT INTO color(color_id, color_name) VALUES (1, 'Red');
INSERT INTO color(color_id, color_name) VALUES (NULL, 'Red');
INSERT INTO color(color_id, color_name) OVERRIDING SYSTEM VALUE VALUES (1, 'Red');
-- update null or custom value
UPDATE color SET color_id = NULL;
UPDATE color SET color_id = 1;

DROP TABLE IF EXISTS test;
CREATE TABLE test (x int, y int, z bigint generated by default as identity);
SELECT create_distributed_table('test', 'x', colocate_with := 'none');
INSERT INTO test VALUES (1,2);
INSERT INTO test SELECT x, y FROM test WHERE x = 1;
SELECT * FROM test;

DROP SCHEMA generated_identities CASCADE;
DROP USER identity_test_user;