type ParamWrapper interface {
	Receiver() reflect.Value
}

type ParamReactor interface {
	OnParamSet(isSet bool, parsed any)
}

type OptionalParam[T any] struct {
	Value T
	IsSet bool
}

// Define schema to use wrapped type
func (o OptionalParam[T]) Schema(r huma.Registry) *huma.Schema {
	return huma.SchemaFromType(r, reflect.TypeOf(o.Value))
}

// Expose wrapped value to receive parsed value from Huma
// MUST have pointer receiver
func (o *OptionalParam[T]) Receiver() reflect.Value {
	return reflect.ValueOf(o).Elem().Field(0)
}

// React to request param being parsed to update internal state
// MUST have pointer receiver
func (o *OptionalParam[T]) OnParamSet(isSet bool, parsed any) {
	o.IsSet = isSet
}