Show invoice expire/description

src/element/Invoice.css

@@ -2,4 +2,12 @@
     border-radius: 10px;
     border: 1px solid #444;
     padding: 10px;
+}
+
+.invoice h2, .invoice h4, .invoice p {
+    margin: 10px 0;
+}
+
+.invoice small {
+    color: #666;
 }

src/element/Invoice.js

@@ -1,6 +1,7 @@
 import "./Invoice.css";
 import { decode as invoiceDecode } from "light-bolt11-decoder";
 import { useMemo } from "react";
+import moment from "moment";
 
 export default function Invoice(props) {
     const invoice = props.invoice;
@@ -8,22 +9,51 @@ export default function Invoice(props) {
     const info = useMemo(() => {
         try {
             let parsed = invoiceDecode(invoice);
-
+            console.debug("Parsed invoice: ", parsed);
             let amount = parseInt(parsed.sections.find(a => a.name === "amount")?.value);
-            return {
-                amount: !isNaN(amount) ? (amount / 1000) : null
+            let timestamp = parseInt(parsed.sections.find(a => a.name === "timestamp")?.value);
+            let expire = parseInt(parsed.sections.find(a => a.name === "expiry")?.value);
+            let description = parsed.sections.find(a => a.name === "description")?.value;
+            let ret = {
+                amount: !isNaN(amount) ? (amount / 1000) : 0,
+                expire: !isNaN(timestamp) && !isNaN(expire) ? timestamp + expire : null,
+                description
+            };
+            if (ret.expire) {
+                ret.expired = ret.expire < (new Date().getTime() / 1000);
             }
+            console.log(ret);
+            return ret;
         } catch (e) {
             console.error(e);
         }
     }, [invoice]);
 
+    function header() {
+        if (info?.description?.length > 0) {
+            return (
+                <>
+                    <h4>⚡️ Invoice for {info?.amount?.toLocaleString()} sats</h4>
+                    <p>{info?.description}</p>
+                </>
+            )
+        } else {
+            return (
+                <h4>⚡️ Invoice for {info?.amount?.toLocaleString()} sats</h4>
+            )
+        }
+    }
+
+
     return (
         <div className="invoice flex">
-            <div className="f-grow">
-                ⚡️ Invoice for {info?.amount?.toLocaleString()} sats
+            <div className="f-grow flex f-col">
+                {header()}
+                {info?.expire ? <small>{info?.expired ? "Expired" : "Expires"} {moment(info.expire * 1000).fromNow()}</small> : null}
             </div>
-            <div className="btn" onClick={() => window.open(`lightning:${invoice}`)}>Pay</div>
+
+            {info?.expired ? <div className="btn">Expired</div> :
+                <div className="btn" onClick={() => window.open(`lightning:${invoice}`)}>Pay</div>}
         </div>
     )
 }