From 15810c1935a48e35df8d33993a53a170a320bd41 Mon Sep 17 00:00:00 2001
From: Alex Gleason <alex@alexgleason.me>
Date: Mon, 8 Jan 2024 16:53:46 -0600
Subject: [PATCH] Configure server from the kind 0 event of the admin user

---
 src/config.ts                       |  4 ----
 src/controllers/api/instance.ts     | 15 ++++++++++-----
 src/controllers/nostr/relay-info.ts | 15 ++++++++++-----
 src/schemas/nostr.ts                | 10 ++++++++++
 4 files changed, 30 insertions(+), 14 deletions(-)

diff --git a/src/config.ts b/src/config.ts
index 8c2626a..2f98c1e 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -58,10 +58,6 @@ const Conf = {
   get postCharLimit() {
     return Number(Deno.env.get('POST_CHAR_LIMIT') || 5000);
   },
-  /** Admin contact to expose through various endpoints. This information is public. */
-  get adminEmail() {
-    return Deno.env.get('ADMIN_EMAIL') || 'webmaster@localhost';
-  },
   /** S3 media storage configuration. */
   s3: {
     get endPoint() {
diff --git a/src/controllers/api/instance.ts b/src/controllers/api/instance.ts
index ebc3269..01f1a5b 100644
--- a/src/controllers/api/instance.ts
+++ b/src/controllers/api/instance.ts
@@ -1,17 +1,22 @@
 import { type AppController } from '@/app.ts';
 import { Conf } from '@/config.ts';
+import { jsonServerMetaSchema } from '@/schemas/nostr.ts';
+import { eventsDB } from '@/storages.ts';
 
-const instanceController: AppController = (c) => {
+const instanceController: AppController = async (c) => {
   const { host, protocol } = Conf.url;
 
+  const [event] = await eventsDB.filter([{ kinds: [0], authors: [Conf.pubkey], limit: 1 }]);
+  const meta = jsonServerMetaSchema.parse(event?.content);
+
   /** Protocol to use for WebSocket URLs, depending on the protocol of the `LOCAL_DOMAIN`. */
   const wsProtocol = protocol === 'http:' ? 'ws:' : 'wss:';
 
   return c.json({
     uri: host,
-    title: 'Ditto',
-    description: 'Nostr and the Fediverse',
-    short_description: 'Nostr and the Fediverse',
+    title: meta.name ?? 'Ditto',
+    description: meta.about ?? 'Nostr and the Fediverse',
+    short_description: meta.tagline ?? 'Nostr and the Fediverse',
     registrations: Conf.registrations,
     max_toot_chars: Conf.postCharLimit,
     configuration: {
@@ -49,7 +54,7 @@ const instanceController: AppController = (c) => {
       streaming_api: `${wsProtocol}//${host}`,
     },
     version: '0.0.0 (compatible; Ditto 0.0.1)',
-    email: Conf.adminEmail,
+    email: meta.email ?? `postmaster@${host}`,
     nostr: {
       pubkey: Conf.pubkey,
       relay: `${wsProtocol}//${host}/relay`,
diff --git a/src/controllers/nostr/relay-info.ts b/src/controllers/nostr/relay-info.ts
index 9c16cdd..60c2f8b 100644
--- a/src/controllers/nostr/relay-info.ts
+++ b/src/controllers/nostr/relay-info.ts
@@ -1,13 +1,18 @@
 import { AppController } from '@/app.ts';
 import { Conf } from '@/config.ts';
+import { jsonServerMetaSchema } from '@/schemas/nostr.ts';
+import { eventsDB } from '@/storages.ts';
+
+const relayInfoController: AppController = async (c) => {
+  const [event] = await eventsDB.filter([{ kinds: [0], authors: [Conf.pubkey], limit: 1 }]);
+  const meta = jsonServerMetaSchema.parse(event?.content);
 
-const relayInfoController: AppController = (c) => {
   return c.json({
-    name: 'Ditto',
-    description: 'Nostr and the Fediverse.',
+    name: meta.name ?? 'Ditto',
+    description: meta.about ?? 'Nostr and the Fediverse.',
     pubkey: Conf.pubkey,
-    contact: `mailto:${Conf.adminEmail}`,
-    supported_nips: [1, 5, 9, 11, 16, 45, 46, 98],
+    contact: `mailto:${meta.email ?? `postmaster@${Conf.url.host}`}`,
+    supported_nips: [1, 5, 9, 11, 16, 45, 50, 46, 98],
     software: 'Ditto',
     version: '0.0.0',
     limitation: {
diff --git a/src/schemas/nostr.ts b/src/schemas/nostr.ts
index 7fb888c..1e8c0af 100644
--- a/src/schemas/nostr.ts
+++ b/src/schemas/nostr.ts
@@ -85,6 +85,12 @@ const mediaDataSchema = z.object({
   width: z.number().int().positive().optional().catch(undefined),
 });
 
+/** Kind 0 content schema for the Ditto server admin user. */
+const serverMetaSchema = metaContentSchema.extend({
+  tagline: z.string().optional().catch(undefined),
+  email: z.string().optional().catch(undefined),
+});
+
 /** Media data from `"media"` tags. */
 type MediaData = z.infer<typeof mediaDataSchema>;
 
@@ -94,6 +100,9 @@ const jsonMetaContentSchema = jsonSchema.pipe(metaContentSchema).catch({});
 /** Parses media data from a JSON string. */
 const jsonMediaDataSchema = jsonSchema.pipe(mediaDataSchema).catch({});
 
+/** Parses server admin meta from a JSON string. */
+const jsonServerMetaSchema = jsonSchema.pipe(serverMetaSchema).catch({});
+
 /** NIP-11 Relay Information Document. */
 const relayInfoDocSchema = z.object({
   name: z.string().transform((val) => val.slice(0, 30)).optional().catch(undefined),
@@ -130,6 +139,7 @@ export {
   filterSchema,
   jsonMediaDataSchema,
   jsonMetaContentSchema,
+  jsonServerMetaSchema,
   type MediaData,
   mediaDataSchema,
   metaContentSchema,