wip: refactor controller

internal/controller/controller_helper.go

@@ -11,3 +11,10 @@ func validateTypeName(v string) (string, bool) {
 	// TODO: special symbols AND include error check in all user-input test
 	return s, false
 }
+
+func maxUint(a, b uint) uint {
+	if b > a {
+		return b
+	}
+	return a
+}