From 24d1ff4aecc9e194d93192f9422a60288d112ad8 Mon Sep 17 00:00:00 2001
From: Alex Gleason <alex@alexgleason.me>
Date: Mon, 15 Jan 2024 17:26:53 -0600
Subject: [PATCH] lnurl: increase default limit to 2000

---
 src/utils/lnurl.ts | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/src/utils/lnurl.ts b/src/utils/lnurl.ts
index f053bc4..2d60814 100644
--- a/src/utils/lnurl.ts
+++ b/src/utils/lnurl.ts
@@ -1,28 +1,28 @@
 import { bech32 } from '@/deps.ts';
 
 /** Encode a URL to LNURL format. */
-function lnurlEncode(url: string): `lnurl1${string}` {
+function lnurlEncode(url: string, limit = 2000): `lnurl1${string}` {
   const data = new TextEncoder().encode(url);
   const words = bech32.toWords(data);
-  return bech32.encode('lnurl', words);
+  return bech32.encode('lnurl', words, limit);
 }
 
 /** Decode a LNURL into a URL. */
-function lnurlDecode(lnurl: string): string {
-  const { prefix, words } = bech32.decode(lnurl);
+function lnurlDecode(lnurl: string, limit = 2000): string {
+  const { prefix, words } = bech32.decode(lnurl, limit);
   if (prefix !== 'lnurl') throw new Error('Invalid LNURL');
   const data = new Uint8Array(bech32.fromWords(words));
   return new TextDecoder().decode(data);
 }
 
 /** Get an LNURL from a lud06 or lud16. */
-function getLnurl({ lud06, lud16 }: { lud06?: string; lud16?: string }): string | undefined {
+function getLnurl({ lud06, lud16 }: { lud06?: string; lud16?: string }, limit?: number): string | undefined {
   if (lud06) return lud06;
   if (lud16) {
     const [name, host] = lud16.split('@');
     if (name && host) {
       const url = new URL(`/.well-known/lnurlp/${name}`, `https://${host}`).toString();
-      return lnurlEncode(url);
+      return lnurlEncode(url, limit);
     }
   }
 }