From f24aec1fb7dd4080d961c26ab5216fd2dfe5d971 Mon Sep 17 00:00:00 2001
From: Adam Soltys <asoltys@gmail.com>
Date: Tue, 24 Jan 2023 09:53:51 -0800
Subject: lnurl endpoints

---
 index.js           |  3 +++
 lib/payments.js    |  1 -
 routes/payments.js | 30 ++++++++++++++++++++++++++++++
 3 files changed, 33 insertions(+), 1 deletion(-)

diff --git a/index.js b/index.js
index 99058833..b2796203 100644
--- a/index.js
+++ b/index.js
@@ -50,6 +50,9 @@ app.get("/payments/:hash", auth, payments.get);
 app.post("/parse", payments.parse);
 app.get("/pot/:name", payments.pot);
 app.post("/take", auth, payments.take);
+app.get("/encode", payments.encode);
+app.get("/decode", payments.decode);
+app.get("/lnurl/:code", payments.lnurl);
 
 app.post("/bitcoin", payments.bitcoin);
 app.post("/bitcoin/fee", auth, payments.fee);
diff --git a/lib/payments.js b/lib/payments.js
index d25df227..386d84d8 100644
--- a/lib/payments.js
+++ b/lib/payments.js
@@ -123,7 +123,6 @@ export let confirm = async (address, txid, vout) => {
   let id = `payment:${txid}:${vout}`;
   let p = await g(id);
   p.confirmed = true;
-  console.log("P", p);
 
   await db
     .multi()
diff --git a/routes/payments.js b/routes/payments.js
index 3ec196cd..53bb6e4d 100644
--- a/routes/payments.js
+++ b/routes/payments.js
@@ -7,6 +7,8 @@ import { l, err } from "$lib/logging";
 import { fail, btc, sats } from "$lib/utils";
 import { requirePin } from "$lib/auth";
 import { debit, credit, confirm, types } from "$lib/payments";
+import { bech32 } from "bech32";
+import got from "got";
 
 import bc from "$lib/bitcoin";
 import ln from "$lib/ln";
@@ -217,5 +219,33 @@ export default {
     await bc.sendRawTransaction(hex);
 
     res.send({ txid });
+  },
+
+  async encode({ query: { address } }, res) {
+    let [name, domain] = address.split("@");
+    let url = `https://${domain}/.well-known/lnurlp/${name}`;
+    let r = await got(url).json();
+    if (r.tag !== "payRequest") fail("not an ln address");
+    let enc = bech32.encode("lnurl", bech32.toWords(Buffer.from(url)), 20000);
+    console.log(enc);
+    res.send(enc);
+  },
+
+  async decode({ query: { text } }, res) {
+    let url = Buffer.from(
+      bech32.fromWords(bech32.decode(text, 20000).words)
+    ).toString();
+
+    res.send(await got(url).json());
+  },
+
+  async lnurl({ params: { code }, query: { amount } }, res) {
+    let { uid } = await g(`code:${code}`);
+
+    let url = Buffer.from(
+      bech32.fromWords(bech32.decode(text, 20000).words)
+    ).toString();
+
+    res.send(await got(url).json());
   }
 };
-- 
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