Example of ZIO Prelude Validator for a Retail Transaction

RetailTransactionValidator.scala

object RetailTransactionValidator extends PoslogValidator {

 implicit val fieldLog: FieldLog = FieldLog(nameOf(RetailTransaction))

 def validate(retailTransaction: Option[UntypedRetailTransaction])(implicit
     transactionId: String): Validation[ValidationError, RetailTransaction] =
   retailTransaction match {
     case None => Validation.fail(EMPTY_FIELD)
     case Some(urt) =>
       for {
         validRetailTransaction <- Validation
           .validateWith(
             LineItemValidator.validate(urt.LineItem),
             LoyaltyAccountValidator.validate(urt.LoyaltyAccount)
       } yield Validation.succeed(validRetailTransaction)
   }
}