1 files changed, 9 insertions, 16 deletions
diff --git a/packages/merchant-backoffice-ui/src/utils/amount.ts b/packages/merchant-backoffice-ui/src/utils/amount.ts
index bdc37952f..93d6a3a4a 100644
--- a/packages/merchant-backoffice-ui/src/utils/amount.ts
+++ b/packages/merchant-backoffice-ui/src/utils/amount.ts
@@ -21,18 +21,6 @@ import {
 import { MerchantBackend } from "../declaration.js";
 
 /**
- * sums two prices,
- * @param one
- * @param two
- * @returns
- */
-const sumPrices = (one: string, two: string) => {
-  const [currency, valueOne] = one.split(":");
-  const [, valueTwo] = two.split(":");
-  return `${currency}:${parseInt(valueOne, 10) + parseInt(valueTwo, 10)}`;
-};
-
-/**
  * merge refund with the same description and a difference less than one minute
  * @param prev list of refunds that will hold the merged refunds
  * @param cur new refund to add to the list
@@ -41,7 +29,7 @@ const sumPrices = (one: string, two: string) => {
 export function mergeRefunds(
   prev: MerchantBackend.Orders.RefundDetails[],
   cur: MerchantBackend.Orders.RefundDetails,
-) {
+): MerchantBackend.Orders.RefundDetails[] {
   let tail;
 
   if (
@@ -54,19 +42,24 @@ export function mergeRefunds(
   ) {
     //more than 1 minute difference
 
+    //can't merge refunds, they are different or to distant in time
     prev.push(cur);
     return prev;
   }
 
+  const a = Amounts.parseOrThrow(tail.amount);
+  const b = Amounts.parseOrThrow(cur.amount);
+  const r = Amounts.add(a, b).amount;
+
   prev[prev.length - 1] = {
     ...tail,
-    amount: sumPrices(tail.amount, cur.amount),
+    amount: Amounts.stringify(r),
   };
 
   return prev;
 }
 
-export const rate = (one: string, two: string) => {
+export const rate = (one: string, two: string): number => {
   const a = Amounts.parseOrThrow(one);
   const b = Amounts.parseOrThrow(two);
   const af = toFloat(a);
@@ -75,6 +68,6 @@ export const rate = (one: string, two: string) => {
   return af / bf;
 };
 
-function toFloat(amount: AmountJson) {
+function toFloat(amount: AmountJson): number {
   return amount.value + amount.fraction / amountFractionalBase;
 }