feat: remove lnurl from api (#91)

templates/lnurlp/print_qr.html

@@ -1,7 +1,7 @@
 {% extends "print.html" %} {% block page %}
 <div class="row justify-center">
   <div class="qr">
-    <lnbits-qrcode value="lightning:{{ lnurl }}"></lnbits-qrcode>
+    <lnbits-qrcode :value="lnurl"></lnbits-qrcode>
   </div>
 </div>
 {% endblock %} {% block styles %}
@@ -15,10 +15,16 @@
   window.app = Vue.createApp({
     el: '#vue',
     created() {
+      const url = window.location.origin + '/lnurlp/{{ link_id }}'
+      const bytes = new TextEncoder().encode(url)
+      const bech32 = NostrTools.nip19.encodeBytes('lnurl', bytes)
+      this.lnurl = `lightning:${bech32.toUpperCase()}`
       window.print()
     },
     data() {
-      return {width: window.innerWidth * 0.5}
+      return {
+        width: window.innerWidth * 0.5
+      }
     }
   })
 </script>