Make the visitor counter increment when a new session is created

guestbook-ng.pl

@@ -40,7 +40,13 @@ under sub ($c) {
     # https://paramdeo.com/blog/opting-your-website-out-of-googles-floc-network
     $c->res->headers->header('Permissions-Policy', 'interest-cohort=()');
 
-    $c->session(expiration => 86400);
+    unless ($c->session('counted')) {
+        $c->counter->increment_visitor_count();
+        $c->session(
+            expiration => 86400,
+            counted => 'true'
+            );
+    }
 
     $c->stash(status => 403) if $c->flash('error');
 

lib/GuestbookNg/Model/Counter.pm

@@ -19,7 +19,7 @@ sub get_visitor_count($self) {
 }
 
 sub increment_visitor_count($self) {
-    $self->pg->db->query(<<~'END_SQL')->text()
+    $self->pg->db->query(<<~'END_SQL')
         UPDATE counters
            SET counter_value = counter_value + 1
          WHERE counter_name = 'visitor';