Add nostr.json (NIP-05)

src/controllers/well-known/nostr.ts

@@ -0,0 +1,34 @@
+import { db } from '@/db.ts';
+import { z } from '@/deps.ts';
+
+import type { AppController } from '@/app.ts';
+import { Conf } from '../../config.ts';
+
+const nameSchema = z.string().min(1).regex(/^[\w_]+$/);
+
+/**
+ * Serves NIP-05's nostr.json.
+ * https://github.com/nostr-protocol/nips/blob/master/05.md
+ */
+const nostrController: AppController = async (c) => {
+  try {
+    const name = nameSchema.parse(c.req.query('name'));
+    const user = await db.users.findFirst({ where: { username: name } });
+    const relay = Conf.relay;
+
+    return c.json({
+      names: {
+        [user.username]: user.pubkey,
+      },
+      relays: relay
+        ? {
+          [user.pubkey]: [relay],
+        }
+        : {},
+    });
+  } catch (_e) {
+    return c.json({ names: {}, relays: {} });
+  }
+};
+
+export { nostrController };