/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */
LOAD 'age';
SET search_path TO ag_catalog;
SELECT create_graph('drop');
NOTICE:  graph "drop" has been created
 create_graph 
--------------
 
(1 row)

DROP EXTENSION age;
NOTICE:  drop cascades to 2 other objects
DETAIL:  drop cascades to table drop._ag_label_vertex
drop cascades to table drop._ag_label_edge
NOTICE:  graph "drop" has been dropped
SELECT nspname FROM pg_catalog.pg_namespace WHERE nspname = 'drop';
 nspname 
---------
(0 rows)

SELECT tablename FROM pg_catalog.pg_tables WHERE schemaname = 'ag_catalog';
 tablename 
-----------
(0 rows)

-- Recreate the extension and validate we can recreate a graph
CREATE EXTENSION age;
SELECT create_graph('drop');
NOTICE:  graph "drop" has been created
 create_graph 
--------------
 
(1 row)

-- Create a schema that uses the agtype, so we can't just drop age.
CREATE SCHEMA other_schema;
CREATE TABLE other_schema.tbl (id agtype);
-- Should Fail because agtype can't be dropped
DROP EXTENSION age;
NOTICE:  drop cascades to 2 other objects
DETAIL:  drop cascades to table drop._ag_label_vertex
drop cascades to table drop._ag_label_edge
NOTICE:  graph "drop" has been dropped
ERROR:  cannot drop extension age because other objects depend on it
DETAIL:  column id of table other_schema.tbl depends on type agtype
HINT:  Use DROP ... CASCADE to drop the dependent objects too.
-- Check the graph still exist, because the DROP command failed
SELECT nspname FROM pg_catalog.pg_namespace WHERE nspname = 'drop';
 nspname 
---------
 drop
(1 row)

-- Should succeed, delete the 'drop' schema and leave 'other_schema'
DROP EXTENSION age CASCADE;
NOTICE:  drop cascades to 2 other objects
DETAIL:  drop cascades to table drop._ag_label_vertex
drop cascades to table drop._ag_label_edge
NOTICE:  graph "drop" has been dropped
NOTICE:  drop cascades to column id of table other_schema.tbl
-- 'other_schema' should exist, 'drop' should be deleted
SELECT nspname FROM pg_catalog.pg_namespace WHERE nspname IN ('other_schema', 'drop');
   nspname    
--------------
 other_schema
(1 row)