From bc9497b0312777a0d044cad4bc4d597b106f0360 Mon Sep 17 00:00:00 2001
From: Michael Bumann <hello@michaelbumann.com>
Date: Mon, 27 Mar 2023 21:47:04 +0200
Subject: [PATCH] Parse wallet connect URLs

---
 src/webln/NostrWeblnProvider.ts | 38 +++++++++++++++++++++++++++------
 1 file changed, 32 insertions(+), 6 deletions(-)

diff --git a/src/webln/NostrWeblnProvider.ts b/src/webln/NostrWeblnProvider.ts
index 1a7b1d7..41199c9 100644
--- a/src/webln/NostrWeblnProvider.ts
+++ b/src/webln/NostrWeblnProvider.ts
@@ -26,6 +26,13 @@ declare global {
   var nostr: Nostr | undefined;
 }
 
+interface NostrWebLNOptions {
+  relayUrl: string;
+  walletPubkey: string;
+  privateKey?: string;
+}
+
+
 export class NostrWebLNProvider {
   relay: Relay;
   relayUrl: string;
@@ -34,14 +41,33 @@ export class NostrWebLNProvider {
   subscribers: Record<string, (payload: any) => void>;
   connected: boolean;
 
-  constructor(options: { relayUrl: string, privateKey?: string, walletPubkey: string }) {
-    options = { ...DEFAULT_OPTIONS, ...options };
-    this.relayUrl = options.relayUrl;
+  static parseWalletConnectUrl(walletConnectUrl: string) {
+    const url = new URL(walletConnectUrl);
+    const options = {} as NostrWebLNOptions;
+    options.walletPubkey = url.pathname.replace('//', '');
+    const privateKey = url.searchParams.get('secret');
+    const relayUrl = url.searchParams.get('relay');
+    if (privateKey) {
+      options.privateKey = privateKey;
+    }
+    if (relayUrl) {
+      options.relayUrl = relayUrl;
+    }
+    return options;
+  }
+  constructor(options: { relayUrl?: string, privateKey?: string, walletPubkey?: string, nostrWalletConnectUrl?: string }) {
+    if (options.nostrWalletConnectUrl) {
+      options = {
+        ...NostrWebLNProvider.parseWalletConnectUrl(options.nostrWalletConnectUrl), ...options
+      };
+    }
+    const _options = { ...DEFAULT_OPTIONS, ...options } as NostrWebLNOptions;
+    this.relayUrl = _options.relayUrl;
     this.relay = relayInit(this.relayUrl);
-    if (options.privateKey) {
-      this.privateKey = (options.privateKey.toLowerCase().startsWith('nsec') ? nip19.decode(options.privateKey).data : options.privateKey) as string;
+    if (_options.privateKey) {
+      this.privateKey = (_options.privateKey.toLowerCase().startsWith('nsec') ? nip19.decode(_options.privateKey).data : _options.privateKey) as string;
     }
-    this.walletPubkey = (options.walletPubkey.toLowerCase().startsWith('npub') ? nip19.decode(options.walletPubkey).data : options.walletPubkey) as string;
+    this.walletPubkey = (_options.walletPubkey.toLowerCase().startsWith('npub') ? nip19.decode(_options.walletPubkey).data : _options.walletPubkey) as string;
     this.subscribers = {};
     this.connected = false;
   }