added functions for number of carts per group

1 files changed, 33 insertions, 0 deletions

diff --git a/lib/rddb.pm b/lib/rddb.pm
index 2881fb1..017003b 100755
--- a/lib/rddb.pm
+++ b/lib/rddb.pm
@@ -74,4 +74,37 @@ sub check_token
   return (0, 'ERROR', "wrong password");
 }
 
+sub get_cart_range
+{
+  my ($dbh, $group) = @_;
+
+  my $sql = qq{select DEFAULT_LOW_CART,DEFAULT_HIGH_CART from GROUPS where NAME = ?;};
+  my $sth = $dbh->prepare($sql)
+    or return (undef, undef, 'ERROR', "Database Error: " . $dbh->errstr);
+
+  $sth->execute($group)
+    or return (undef, undef, 'ERROR', "Database Error: " . $sth->errstr);
+
+  my ($low_cart, $high_cart) = $sth->fetchrow_array();
+  $sth->finish();
+
+  unless(defined $low_cart && defined $high_cart) {
+    return (undef, undef, 'ERROR', "group '" . $group . "' not known by rivendell")
+  }
+  return ($low_cart, $high_cart, 'OK', 'success');
+}
+
+sub get_num_carts
+{
+  my ($dbh, $group) = @_;
+
+  my ($low_cart, $high_cart, $status, $errorstring) = get_cart_range($dbh, $group);
+  unless(defined $low_cart && defined $high_cart) {
+    return (undef, $status, $errorstring);
+  }
+
+  return ($high_cart - $low_cart + 1, 'OK', 'success');
+}
+
+
 return 1;