From 74d0ea356c9cdf5b393d4260c1c299c3aaac7ed6 Mon Sep 17 00:00:00 2001
From: Adam Soltys <asoltys@gmail.com>
Date: Tue, 12 Dec 2023 06:07:30 +0000
Subject: default maxfee to 5% of total

---
 lib/payments.js | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lib/payments.js b/lib/payments.js
index f53fc2c4..e7674f4e 100644
--- a/lib/payments.js
+++ b/lib/payments.js
@@ -236,13 +236,14 @@ export let payLightning = async (user, payreq, amount, maxfee, memo) => {
     if (amount < 0 || amount > SATS || isNaN(amount)) fail("Invalid amount");
   }
 
-  maxfee = maxfee ? parseInt(maxfee) : 0;
-  if (maxfee < 0) fail("Max fee cannot be negative");
 
   let total = amount;
   let { amount_msat, payment_hash } = await ln.decode(payreq);
   if (amount_msat) total = Math.round(amount_msat / 1000);
 
+  maxfee = maxfee ? parseInt(maxfee) : Math.round(total * 0.05);
+  if (maxfee < 0) fail("Max fee cannot be negative");
+
   let iid = await g(`invoice:${hash}`);
   if (iid && iid.hash) iid = iid.hash;
   let invoice = await g(`invoice:${iid}`);
-- 
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