package types

import "errors"

type Currency string

const (
	IRR Currency = "IRR"
	USD Currency = "USD"
)

func StringCastToCurrency(s string) (Currency, error) {
	switch s {
	case "IRR":
		return IRR, nil
	case "USD":
		return USD, nil
	default:
		return IRR, errors.New("not a valid currency")
	}
}