#!/usr/bin/perl -w

use strict;

use Test::More tests => 53;

BEGIN {
	use_ok('DBI');
	use_ok('DBD::Pg');
};

# hum?
my $connect = "DBI:Pg:dbname=test";

my $dbh = DBI->connect($connect,"","") || die $DBI::errstr;
ok($dbh, "dbh");

my $pwd = $0;
$pwd =~ s#/[^/]*$##;
if ($pwd !~ m#^/#) {
	my $cwd = `pwd`;
	chomp($cwd);
	$pwd = $cwd . '/' . $pwd;
}
ok($pwd, "pwd: $pwd");
my $index = "$pwd/../data/casket/";
my $node = 'http://localhost:1978/node/trivia';

my $sql = "select id from pgest('$node','admin','admin',0,?,?,?,?,?,array['\@id']) as (id text)";
diag $sql;
my $sth = $dbh->prepare($sql) || die $dbh->errstr();
ok($sth, "sth");

sub pgest {
	$sth->execute(@_) || die "FATAL ERROR: direct " . $sth->errstr();
	{
		no warnings;
		ok($sth, "execute(".join(",",@_).")");
	}

	my @arr;
	while (my ($id) = $sth->fetchrow_array() ) {
		push @arr, $id;
	}

	return @arr;
}

sub estcmd {
	my ($q,$attr, $order, $limit, $offset) = @_;

	my $cmd = "estcall search -vu -sf";
	$cmd .= " -attr '$attr'" if ($attr);
	$cmd .= " -ord '$order'" if ($order);
	if ($limit) {
		$cmd .= " -max $limit";
	} else {
		$cmd .= " -max 999999";
	}
	$cmd .= " -sk $offset" if ($offset);
	$q ||= '';
	$cmd .= " $node '$q'";
	diag $cmd;

	open(my $fh, "$cmd |") || die "cmd: $!";
	my $del = <$fh>;
	chomp($del);
	while(<$fh>) {
		last if (/^\Q$del\E/);
	}
	my @arr;
	while(<$fh>) {
		chomp;
		last if (/^\Q$del\E/);
		push @arr, $_;
	}

	return @arr;
}

# test simple query
foreach my $q (qw(blade runner Philip k. dick)) {

	ok(my $hits = estcmd($q), "estcmd: $q");

	diag "$hits hits";

	cmp_ok(scalar pgest($q, '', undef, 0, 0), '==', $hits, "pgest: $q");
}

# test attr query
foreach my $q (('@title STRINC Blade Runner', '@title ISTRBW blade runner')) {

	ok(my $hits = estcmd('',$q), "estcmd: $q");

	diag "$hits hits";

	cmp_ok($hits, '==', scalar pgest(undef, $q, undef, 0, 0), 'blade runner');
}

diag "Error handling test follows, ignore messages...";
# test NULL handling
ok(! $dbh->do(qq`select * from pgest(null, '', '', null, 0, 0, array['\@id']) as (id text)`), "null index_path");
ok(my $hits = pgest('blade runner', '', undef, 0, 0), "test search");
cmp_ok($hits, '==', pgest('blade runner', undef, undef, 0, 0), "null attr");
cmp_ok($hits, '==', pgest('blade runner', '', undef, undef, 0), "null limit");
cmp_ok($hits, '==', pgest('blade runner', '', undef, 0, undef), "null offset");
cmp_ok($hits, '==', pgest('blade runner', undef, undef, undef, undef), "null optional");

# test limit, offset and global mess
my $d = int($hits / 3);
cmp_ok($d, '==', pgest('blade runner',undef, undef, $d, undef), "limit $d");
cmp_ok($hits, '==', pgest('blade runner', undef, undef, undef, undef), "check");

cmp_ok(($hits - $d), '==', pgest('blade runner',undef, undef, undef, $d), "offset $d");
cmp_ok($hits, '==', pgest('blade runner', undef, undef, undef, undef), "check");

cmp_ok(($hits - $d), '==', pgest('blade runner',undef, undef, ($hits - $d), $d), "limit ".($hits - $d)." offset $d");
cmp_ok($hits, '==', pgest('blade runner', undef, undef, undef, undef), "check");

# test sort
my @arr_asc = pgest('blade runner', undef, '@id NUMA', undef, undef);
my @arr_desc = pgest('blade runner', undef, '@id NUMD', undef, undef);

cmp_ok(@arr_asc, '==', @arr_desc, "same number of results");
my $errors = 0;
foreach my $i (0 .. $#arr_asc) {
	my ($a, $b) = ($arr_asc[$i], $arr_desc[$#arr_desc - $i]);
	if ($a ne $b) {
		$errors++;
		diag "element $i: $a != $b";
	}
}

cmp_ok($errors, '==', 0, "errors in ordering");