From 63fe7c28cc433f211a13634a65b7d9ac17949311 Mon Sep 17 00:00:00 2001
From: Adam Soltys <asoltys@gmail.com>
Date: Tue, 12 Dec 2023 04:58:09 +0000
Subject: allow undefined amount for lightning payments

---
 lib/payments.js | 23 ++++++++++++-----------
 1 file changed, 12 insertions(+), 11 deletions(-)

(limited to 'lib')

diff --git a/lib/payments.js b/lib/payments.js
index 14bdf7ae..f53fc2c4 100644
--- a/lib/payments.js
+++ b/lib/payments.js
@@ -5,7 +5,7 @@ import { v4 } from "uuid";
 import { notify } from "$lib/notifications";
 import { db, g, s, t } from "$lib/db";
 import { l, err, warn } from "$lib/logging";
-import { fail, wait } from "$lib/utils";
+import { fail, wait, SATS } from "$lib/utils";
 import { callWebhook } from "$lib/webhooks";
 import dollarsToWords from "dollars-to-words";
 import got from "got";
@@ -23,7 +23,7 @@ export const types = {
   bitcoin: "bitcoin",
   lightning: "lightning",
   fund: "fund",
-  classic: "classic"
+  classic: "classic",
 };
 
 export let debit = async (
@@ -91,7 +91,7 @@ export let debit = async (
     type,
     ref,
     tip,
-    created: Date.now()
+    created: Date.now(),
   };
 
   await s(`payment:${id}`, p);
@@ -150,7 +150,7 @@ export let credit = async (hash, amount, memo, ref, type = types.internal) => {
     tip,
     type,
     confirmed: true,
-    created: Date.now()
+    created: Date.now(),
   };
 
   if (type === types.bitcoin) invoice.pending += amount;
@@ -190,7 +190,7 @@ export let credit = async (hash, amount, memo, ref, type = types.internal) => {
         new Intl.NumberFormat("en-US", { maximumFractionDigits: 0 }).format(
           p.amount
         ),
-      link: `${process.env.URL}/payment/${p.id}`
+      link: `${process.env.URL}/payment/${p.id}`,
     });
   }
 
@@ -231,8 +231,10 @@ export let payLightning = async (user, payreq, amount, maxfee, memo) => {
   let p;
   let hash = payreq;
 
-  amount = parseInt(amount);
-  if (amount < 0) fail("Invalid amount");
+  if (typeof amount !== "undefined") {
+    amount = parseInt(amount);
+    if (amount < 0 || amount > SATS || isNaN(amount)) fail("Invalid amount");
+  }
 
   maxfee = maxfee ? parseInt(maxfee) : 0;
   if (maxfee < 0) fail("Max fee cannot be negative");
@@ -292,13 +294,13 @@ export let payLightning = async (user, payreq, amount, maxfee, memo) => {
     let interval = setInterval(check, 5000);
 
     try {
-      l("paying lightning invoice", payreq);
+      l("paying lightning invoice", payreq.substr(-8), total, amount, maxfee);
 
       r = await ln.pay({
         bolt11: payreq.replace(/\s/g, "").toLowerCase(),
         amount_msat: amount_msat ? undefined : amount * 1000,
         maxfee: maxfee * 1000,
-        retry_for: 5
+        retry_for: 5,
       });
 
       if (!(r.status === "complete" && r.payment_preimage))
@@ -306,8 +308,7 @@ export let payLightning = async (user, payreq, amount, maxfee, memo) => {
 
       l("payment completed", p.id, r.payment_preimage);
 
-      p.amount = -amount;
-      p.tip = total - amount;
+      p.amount = -total;
       p.fee = Math.round((r.amount_sent_msat - r.amount_msat) / 1000);
       p.ref = r.payment_preimage;
 
-- 
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