From 95e543d1060ba7f0cd5b249b4dacceb977e23df8 Mon Sep 17 00:00:00 2001
From: Adam Soltys <asoltys@gmail.com>
Date: Sun, 18 Aug 2024 23:37:56 -0700
Subject: allow specifying bolt11 invoice

---
 lib/invoices.js | 26 ++++++++++++++++++--------
 1 file changed, 18 insertions(+), 8 deletions(-)

(limited to 'lib')

diff --git a/lib/invoices.js b/lib/invoices.js
index b07ac1f5..557d0de6 100644
--- a/lib/invoices.js
+++ b/lib/invoices.js
@@ -13,6 +13,7 @@ import ln from "$lib/ln";
 
 export let generate = async ({ invoice, user, sender }) => {
   let {
+    bolt11,
     currency,
     expiry,
     fiat,
@@ -48,14 +49,23 @@ export let generate = async ({ invoice, user, sender }) => {
 
   let hash, text;
   if (type === types.lightning) {
-    let r = await ln.invoice({
-      amount_msat: amount ? `${amount + tip}sat` : "any",
-      label: id,
-      description: memo || "",
-      expiry: expiry || 60 * 60 * 24 * 30,
-      deschashonly: true,
-      cltv: 19,
-    });
+    let r;
+    if (bolt11) {
+      let { id: nodeid } = await ln.getinfo();
+      r = await ln.decode(bolt11);
+      if (r.payee !== nodeid) fail("invalid invoice");
+      amount = Math.round(r.amount_msat / 1000);
+      r.bolt11 = bolt11;
+    } else {
+      r = await ln.invoice({
+        amount_msat: amount ? `${amount + tip}sat` : "any",
+        label: id,
+        description: memo || "",
+        expiry: expiry || 60 * 60 * 24 * 30,
+        deschashonly: true,
+        cltv: 19,
+      });
+    }
 
     hash = r.bolt11;
     text = r.bolt11;
-- 
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