From 2fcab1877329ae515df2190736e025de386b120b Mon Sep 17 00:00:00 2001
From: AlexanderBuzz <102560752+AlexanderBuzz@users.noreply.github.com>
Date: Fri, 22 Sep 2023 14:35:40 +0200
Subject: [PATCH] - Fixed partial payment exploit - added custom token to
 displayable amount

---
 .../desktop-js/library/4_helpers.js               | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/content/_code-samples/build-a-wallet/desktop-js/library/4_helpers.js b/content/_code-samples/build-a-wallet/desktop-js/library/4_helpers.js
index a2ac577003..5e4063de90 100644
--- a/content/_code-samples/build-a-wallet/desktop-js/library/4_helpers.js
+++ b/content/_code-samples/build-a-wallet/desktop-js/library/4_helpers.js
@@ -6,9 +6,22 @@ const prepareTxData = (transactions) => {
         type: transaction.tx.TransactionType,
         from: transaction.tx.Account,
         to: transaction.tx.Destination,
-        value: xrpl.dropsToXrp(transaction.tx.Amount),
+        value: getDisplayableAmount(transaction.meta.delivered_amount),
         hash: transaction.tx.hash
     }))
 }
 
+const getDisplayableAmount = (rawAmount) => {
+    if (rawAmount === 'unavailable') {
+        // Special case for pre-2014 partial payments.
+        return rawAmount
+    } else if (typeof rawAmount === 'string') {
+        // It's an XRP amount in drops. Convert to decimal.
+        return xrpl.dropsToXrp(rawAmount) + ' XRP'
+    } else {
+        //It's a token (IOU) amount.
+        return rawAmount.value + ' ' + rawAmount.currency
+    }
+}
+
 module.exports = { prepareTxData }