# Test behavior with different schema on subscriber
use strict;
use warnings;
use PostgresNode;
use TestLib;
use Test::More tests => 4;

# Create publisher node
my $node_publisher = get_new_node('publisher');
$node_publisher->init(allows_streaming => 'logical');
$node_publisher->start;

# Create subscriber node
my $node_subscriber = get_new_node('subscriber');
$node_subscriber->init(allows_streaming => 'logical');
$node_subscriber->start;

# Create some preexisting content on publisher
$node_publisher->safe_psql('postgres',
	"CREATE TABLE test_tab (a int primary key, b varchar)");
$node_publisher->safe_psql('postgres',
	"INSERT INTO test_tab VALUES (1, 'foo'), (2, 'bar')");

# Setup structure on subscriber
$node_subscriber->safe_psql('postgres',
	"CREATE TABLE test_tab (a int primary key, b text, c timestamptz DEFAULT now(), d bigint DEFAULT 999, e int GENERATED BY DEFAULT AS IDENTITY)"
);

# Setup logical replication
my $publisher_connstr = $node_publisher->connstr . ' dbname=postgres';
$node_publisher->safe_psql('postgres',
	"CREATE PUBLICATION tap_pub FOR TABLE test_tab");

$node_subscriber->safe_psql('postgres',
	"CREATE SUBSCRIPTION tap_sub CONNECTION '$publisher_connstr' PUBLICATION tap_pub"
);

$node_publisher->wait_for_catchup('tap_sub');

# Also wait for initial table sync to finish
my $synced_query =
  "SELECT count(1) = 0 FROM pg_subscription_rel WHERE srsubstate NOT IN ('r', 's');";
$node_subscriber->poll_query_until('postgres', $synced_query)
  or die "Timed out while waiting for subscriber to synchronize data";

my $result =
  $node_subscriber->safe_psql('postgres',
	"SELECT count(*), count(c), count(d = 999) FROM test_tab");
is($result, qq(2|2|2), 'check initial data was copied to subscriber');

# Update the rows on the publisher and check the additional columns on
# subscriber didn't change
$node_publisher->safe_psql('postgres', "UPDATE test_tab SET b = md5(b)");

$node_publisher->wait_for_catchup('tap_sub');

$result =
  $node_subscriber->safe_psql('postgres',
	"SELECT count(*), count(c), count(d = 999), count(e) FROM test_tab");
is($result, qq(2|2|2|2),
	'check extra columns contain local defaults after copy');

# Change the local values of the extra columns on the subscriber,
# update publisher, and check that subscriber retains the expected
# values
$node_subscriber->safe_psql('postgres',
	"UPDATE test_tab SET c = 'epoch'::timestamptz + 987654321 * interval '1s'"
);
$node_publisher->safe_psql('postgres',
	"UPDATE test_tab SET b = md5(a::text)");

$node_publisher->wait_for_catchup('tap_sub');

$result = $node_subscriber->safe_psql('postgres',
	"SELECT count(*), count(extract(epoch from c) = 987654321), count(d = 999) FROM test_tab"
);
is($result, qq(2|2|2), 'check extra columns contain locally changed data');

# Another insert
$node_publisher->safe_psql('postgres',
	"INSERT INTO test_tab VALUES (3, 'baz')");

$node_publisher->wait_for_catchup('tap_sub');

$result =
  $node_subscriber->safe_psql('postgres',
	"SELECT count(*), count(c), count(d = 999), count(e) FROM test_tab");
is($result, qq(3|3|3|3),
	'check extra columns contain local defaults after apply');

$node_subscriber->stop;
$node_publisher->stop;