use v5.36;
use Test::More;

plan skip_all => $@ if !eval { require FU::PG; } && $@ =~ /Unable to load libpq/;
plan skip_all => 'Please set FU_TEST_DB to a PostgreSQL connection string to run these tests' if !$ENV{FU_TEST_DB};

sub okerr($sev, $act, $msg) {
    is ref $@, 'FU::PG::error';
    is $@->{severity}, $sev;
    is $@->{action}, $act;
    like "$@", $msg;
}

ok !eval { FU::PG->connect("invalid") };
okerr FATAL => connect => qr/missing "=" after "invalid"/;

ok FU::PG::lib_version() > 100000;

my $conn = FU::PG->connect($ENV{FU_TEST_DB});
$conn->_debug_trace(0);

is ref $conn, 'FU::PG::conn';
ok $conn->server_version > 100000;
is $conn->lib_version, FU::PG::lib_version();

ok !eval { $conn->exec('COPY (SELECT 1) TO STDOUT'); };
okerr FATAL => exec => qr/unexpected status code/;

ok !eval { $conn->exec('SELEXT'); };
okerr ERROR => exec => qr/syntax error/;

ok !defined $conn->exec('');
is $conn->exec('SELECT 1'), 1;

ok !eval { $conn->q('SELEXT')->params; };
okerr ERROR => prepare => qr/syntax error/;

{
    my $st = $conn->q('SELECT 1');
    is_deeply $st->params, [];
    is_deeply $st->columns, [{ name => '?column?', oid => 23 }];
    is $conn->exec('SELECT 1 FROM pg_prepared_statements'), 1;
    is $st->exec, 1;
}

is $conn->exec('SELECT 1 FROM pg_prepared_statements'), 0;

ok !eval { $conn->q('SELECT 1', 1)->exec; 1 };
okerr ERROR => exec => qr/bind message supplies 1 parameters, but prepared statement/;

ok !eval { $conn->q('SELECT $1')->exec; 1 };
okerr ERROR => exec => qr/bind message supplies 0 parameters, but prepared statement/;

{
    my $st = $conn->q("SELECT \$1::int AS a, \$2::char(5) AS \"\x{1F603}\"");
    undef $conn; # statement keeps the connection alive
    is_deeply $st->params, [ { oid => 23 }, { oid => 1042 } ];
    is_deeply $st->columns, [
        { oid => 23, name => 'a' },
        { oid => 1042, name => "\x{1F603}", typemod => 9 },
    ];
}

done_testing;