feature/IO-2885-IntelliPay-App-Postback

- Refactor / Add Tests

server/intellipay/lib/decodeComment.js

@@ -0,0 +1,14 @@
+/**
+ * @description Decode the comment from base64
+ * @param comment
+ * @returns {any|null}
+ */
+const decodeComment = (comment) => {
+  try {
+    return comment ? JSON.parse(Buffer.from(comment, "base64").toString()) : null;
+  } catch (error) {
+    return null; // Handle malformed base64 string gracefully
+  }
+};
+
+module.exports = decodeComment;