nostrController: serve names from labels

src/controllers/well-known/nostr.ts

@@ -1,8 +1,7 @@
+import { AppController } from '@/app.ts';
 import { Conf } from '@/config.ts';
-import { findUser } from '@/db/users.ts';
 import { z } from '@/deps.ts';
-
-import type { AppController } from '@/app.ts';
+import { eventsDB } from '@/storages.ts';
 
 const nameSchema = z.string().min(1).regex(/^\w+$/);
 
@@ -11,17 +10,32 @@ const nameSchema = z.string().min(1).regex(/^\w+$/);
  * https://github.com/nostr-protocol/nips/blob/master/05.md
  */
 const nostrController: AppController = async (c) => {
-  const name = nameSchema.safeParse(c.req.query('name'));
-  const user = name.success ? await findUser({ username: name.data }) : null;
+  const result = nameSchema.safeParse(c.req.query('name'));
+  const name = result.success ? result.data : undefined;
 
-  if (!user) return c.json({ names: {}, relays: {} });
+  if (!name) {
+    return c.json({ names: {}, relays: {} });
+  }
+
+  const [label] = await eventsDB.query([{
+    kinds: [1985],
+    authors: [Conf.pubkey],
+    '#L': ['nip05'],
+    '#l': [`${name}@${Conf.url.host}`],
+  }]);
+
+  const pubkey = label?.tags.find(([name]) => name === 'p')?.[1];
+
+  if (!label || !pubkey) {
+    return c.json({ names: {}, relays: {} });
+  }
 
   return c.json({
     names: {
-      [user.username]: user.pubkey,
+      [name]: pubkey,
     },
     relays: {
-      [user.pubkey]: [Conf.relay],
+      [pubkey]: [Conf.relay],
     },
   });
 };