--
-- Test foreign-data wrapper file_fdw.
--

-- Clean up in case a prior regression run failed
SET client_min_messages TO 'error';
DROP ROLE IF EXISTS file_fdw_superuser, file_fdw_user, no_priv_user;
RESET client_min_messages;

CREATE ROLE file_fdw_superuser LOGIN SUPERUSER; -- is a superuser
CREATE ROLE file_fdw_user LOGIN;                -- has priv and user mapping
CREATE ROLE no_priv_user LOGIN;                 -- has priv but no user mapping

-- Install file_fdw
CREATE EXTENSION file_fdw;

-- file_fdw_superuser owns fdw-related objects
SET ROLE file_fdw_superuser;
CREATE SERVER file_server FOREIGN DATA WRAPPER file_fdw;

-- privilege tests
SET ROLE file_fdw_user;
CREATE FOREIGN DATA WRAPPER file_fdw2 HANDLER file_fdw_handler VALIDATOR file_fdw_validator;   -- ERROR
CREATE SERVER file_server2 FOREIGN DATA WRAPPER file_fdw;   -- ERROR
CREATE USER MAPPING FOR file_fdw_user SERVER file_server;   -- ERROR

SET ROLE file_fdw_superuser;
GRANT USAGE ON FOREIGN SERVER file_server TO file_fdw_user;

SET ROLE file_fdw_user;
CREATE USER MAPPING FOR file_fdw_user SERVER file_server;

-- create user mappings and grant privilege to test users
SET ROLE file_fdw_superuser;
CREATE USER MAPPING FOR file_fdw_superuser SERVER file_server;
CREATE USER MAPPING FOR no_priv_user SERVER file_server;

-- validator tests
CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (format 'xml');  -- ERROR
CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (format 'text', header 'true');      -- ERROR
CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (format 'text', quote ':');          -- ERROR
CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (format 'text', escape ':');         -- ERROR
CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (format 'binary', header 'true');    -- ERROR
CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (format 'binary', quote ':');        -- ERROR
CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (format 'binary', escape ':');       -- ERROR
CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (format 'text', delimiter 'a');      -- ERROR
CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (format 'text', escape '-');         -- ERROR
CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (format 'csv', quote '-', null '=-=');   -- ERROR
CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (format 'csv', delimiter '-', null '=-=');    -- ERROR
CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (format 'csv', delimiter '-', quote '-');    -- ERROR
CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (format 'csv', delimiter '---');     -- ERROR
CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (format 'csv', quote '---');         -- ERROR
CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (format 'csv', escape '---');        -- ERROR
CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (format 'text', delimiter '\');       -- ERROR
CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (format 'text', delimiter '.');       -- ERROR
CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (format 'text', delimiter '1');       -- ERROR
CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (format 'text', delimiter 'a');       -- ERROR
CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (format 'csv', delimiter '
');       -- ERROR
CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (format 'csv', null '
');       -- ERROR
CREATE FOREIGN TABLE tbl () SERVER file_server;  -- ERROR

CREATE FOREIGN TABLE agg_text (
	a	int2,
	b	float4
) SERVER file_server
OPTIONS (format 'text', filename '@abs_srcdir@/data/agg.data', delimiter '	', null '\N');
GRANT SELECT ON agg_text TO file_fdw_user;
CREATE FOREIGN TABLE agg_csv (
	a	int2,
	b	float4
) SERVER file_server
OPTIONS (format 'csv', filename '@abs_srcdir@/data/agg.csv', header 'true', delimiter ';', quote '@', escape '"', null '');
CREATE FOREIGN TABLE agg_bad (
	a	int2,
	b	float4
) SERVER file_server
OPTIONS (format 'csv', filename '@abs_srcdir@/data/agg.bad', header 'true', delimiter ';', quote '@', escape '"', null '');

-- per-column options tests
CREATE FOREIGN TABLE text_csv (
    word1 text OPTIONS (force_not_null 'true'),
    word2 text OPTIONS (force_not_null 'off')
) SERVER file_server
OPTIONS (format 'text', filename '@abs_srcdir@/data/text.csv', null 'NULL');
SELECT * FROM text_csv; -- ERROR
ALTER FOREIGN TABLE text_csv OPTIONS (SET format 'csv');
SELECT * FROM text_csv;

-- force_not_null is not allowed to be specified at any foreign object level:
ALTER FOREIGN DATA WRAPPER file_fdw OPTIONS (ADD force_not_null '*'); -- ERROR
ALTER SERVER file_server OPTIONS (ADD force_not_null '*'); -- ERROR
CREATE USER MAPPING FOR public SERVER file_server OPTIONS (force_not_null '*'); -- ERROR
CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (force_not_null '*'); -- ERROR

-- basic query tests
SELECT * FROM agg_text WHERE b > 10.0 ORDER BY a;
SELECT * FROM agg_csv ORDER BY a;
SELECT * FROM agg_csv c JOIN agg_text t ON (t.a = c.a) ORDER BY c.a;

-- error context report tests
SELECT * FROM agg_bad;               -- ERROR

-- misc query tests
\t on
EXPLAIN (VERBOSE, COSTS FALSE) SELECT * FROM agg_csv;
\t off
PREPARE st(int) AS SELECT * FROM agg_csv WHERE a = $1;
EXECUTE st(100);
EXECUTE st(100);
DEALLOCATE st;

-- tableoid
SELECT tableoid::regclass, b FROM agg_csv;

-- updates aren't supported
INSERT INTO agg_csv VALUES(1,2.0);
UPDATE agg_csv SET a = 1;
DELETE FROM agg_csv WHERE a = 100;
SELECT * FROM agg_csv FOR UPDATE OF agg_csv;
-- but this should be ignored
SELECT * FROM agg_csv FOR UPDATE;

-- privilege tests
SET ROLE file_fdw_superuser;
SELECT * FROM agg_text ORDER BY a;
SET ROLE file_fdw_user;
SELECT * FROM agg_text ORDER BY a;
SET ROLE no_priv_user;
SELECT * FROM agg_text ORDER BY a;   -- ERROR
SET ROLE file_fdw_user;
\t on
EXPLAIN (VERBOSE, COSTS FALSE) SELECT * FROM agg_text WHERE a > 0;
\t off

-- privilege tests for object
SET ROLE file_fdw_superuser;
ALTER FOREIGN TABLE agg_text OWNER TO file_fdw_user;
ALTER FOREIGN TABLE agg_text OPTIONS (SET format 'text');
SET ROLE file_fdw_user;
ALTER FOREIGN TABLE agg_text OPTIONS (SET format 'text');
SET ROLE file_fdw_superuser;

-- cleanup
RESET ROLE;
DROP EXTENSION file_fdw CASCADE;
DROP ROLE file_fdw_superuser, file_fdw_user, no_priv_user;