/**
* Generates a Payment message based on the information in the PaymentRequest. Provide
* transactions built by the wallet. If the PaymentRequest did not specify a payment_url, returns
* null.
*
* @param txns list of transactions to be included with the Payment message.
* @param refundAddr will be used by the merchant to send money back if there was a problem.
* @param memo is a message to include in the payment message sent to the merchant.
*/
@Nullable
public Protos.Payment getPayment(
List<Transaction> txns, @Nullable Address refundAddr, @Nullable String memo)
throws IOException, PaymentProtocolException.InvalidNetwork {
if (paymentDetails.hasPaymentUrl()) {
for (Transaction tx : txns)
if (!tx.getParams().equals(params))
throw new PaymentProtocolException.InvalidNetwork(params.getPaymentProtocolId());
return PaymentProtocol.createPaymentMessage(
txns, totalValue, refundAddr, memo, getMerchantData());
} else {
return null;
}
}
/**
* Create a payment request. You may want to sign the request using {@link #signPaymentRequest}.
* Use {@link Protos.PaymentRequest.Builder#build} to get the actual payment request.
*
* @param params network parameters
* @param outputs list of outputs to request coins to
* @param memo arbitrary, user readable memo, or null if none
* @param paymentUrl URL to send payment message to, or null if none
* @param merchantData arbitrary merchant data, or null if none
* @return created payment request, in its builder form
*/
public static Protos.PaymentRequest.Builder createPaymentRequest(
NetworkParameters params,
List<Protos.Output> outputs,
@Nullable String memo,
@Nullable String paymentUrl,
@Nullable byte[] merchantData) {
final Protos.PaymentDetails.Builder paymentDetails = Protos.PaymentDetails.newBuilder();
paymentDetails.setNetwork(params.getPaymentProtocolId());
for (Protos.Output output : outputs) paymentDetails.addOutputs(output);
if (memo != null) paymentDetails.setMemo(memo);
if (paymentUrl != null) paymentDetails.setPaymentUrl(paymentUrl);
if (merchantData != null) paymentDetails.setMerchantData(ByteString.copyFrom(merchantData));
paymentDetails.setTime(Utils.currentTimeSeconds());
final Protos.PaymentRequest.Builder paymentRequest = Protos.PaymentRequest.newBuilder();
paymentRequest.setSerializedPaymentDetails(paymentDetails.build().toByteString());
return paymentRequest;
}