package jsoninfo

import (

	"encoding/json"

)

func MarshalRef(value string, otherwise interface{}) ([]byte, error) {

	if len(value) > 0 {

		return json.Marshal(&refProps{

			Ref: value,

		})

	}

	return json.Marshal(otherwise)

}

func UnmarshalRef(data []byte, destRef *string, destOtherwise interface{}) error {

	refProps := &refProps{}

	if err := json.Unmarshal(data, refProps); err == nil {

		ref := refProps.Ref

		if len(ref) > 0 {

			*destRef = ref

			return nil

		}

	}

	return json.Unmarshal(data, destOtherwise)

}

type refProps struct {

	Ref string `json:"$ref,omitempty"`

}