set arbitrator payment account payloads on dispute opened

Author: woodser

core/src/main/java/haveno/core/support/dispute/DisputeManager.java

@@ -537,15 +537,21 @@ protected void handleDisputeOpenedMessage(DisputeOpenedMessage message) {
                         throw e;
                     }
 
-                    // try to validate payment account
+                    // try to validate payment accounts
                     try {
-                        DisputeValidation.validatePaymentAccountPayload(dispute); // TODO: add field to dispute details: valid, invalid, missing
+                        DisputeValidation.validatePaymentAccountPayloads(dispute); // TODO: add field to dispute details: valid, invalid, missing
                     } catch (Exception e) {
                         log.error(ExceptionUtils.getStackTrace(e));
                         trade.prependErrorMessage(e.getMessage());
                         throw e;
                     }
 
+                    // set arbitrator's payment account payloads
+                    if (trade.isArbitrator()) {
+                        if (trade.getBuyer().getPaymentAccountPayload() == null) trade.getBuyer().setPaymentAccountPayload(dispute.getBuyerPaymentAccountPayload());
+                        if (trade.getSeller().getPaymentAccountPayload() == null) trade.getSeller().setPaymentAccountPayload(dispute.getSellerPaymentAccountPayload());
+                    }
+
                     // get sender
                     TradePeer sender;
                     if (reOpen) { // re-open can come from either peer

core/src/main/java/haveno/core/support/dispute/DisputeValidation.java

@@ -41,9 +41,12 @@
 @Slf4j
 public class DisputeValidation {
 
-    public static void validatePaymentAccountPayload(Dispute dispute) throws ValidationException {
+    public static void validatePaymentAccountPayloads(Dispute dispute) throws ValidationException {
         if (dispute.getSellerPaymentAccountPayload() == null) throw new ValidationException(dispute, "Seller's payment account payload is null in dispute opened for trade " + dispute.getTradeId());
-        if (!Arrays.equals(dispute.getSellerPaymentAccountPayload().getHash(), dispute.getContract().getSellerPaymentAccountPayloadHash())) throw new ValidationException(dispute, "Hash of maker's payment account payload does not match contract");
+        if (!Arrays.equals(dispute.getSellerPaymentAccountPayload().getHash(), dispute.getContract().getSellerPaymentAccountPayloadHash())) throw new ValidationException(dispute, "Hash of seller's payment account payload does not match contract");
+        if (dispute.getBuyerPaymentAccountPayload() != null) {
+            if (!Arrays.equals(dispute.getBuyerPaymentAccountPayload().getHash(), dispute.getContract().getBuyerPaymentAccountPayloadHash())) throw new ValidationException(dispute, "Hash of buyer's payment account payload does not match contract");
+        }
     }
 
     public static void validateDisputeData(Dispute dispute) throws ValidationException {