Move more Nostr schema stuff into schemas/nostr.ts

src/controllers/api/accounts.ts

@@ -1,7 +1,7 @@
 import { type AppController } from '@/app.ts';
 import { type Filter, findReplyTag, z } from '@/deps.ts';
 import { getAuthor, getFilter, getFollows, publish } from '@/client.ts';
-import { parseMetaContent } from '@/schema.ts';
+import { jsonMetaContentSchema } from '@/schemas/nostr.ts';
 import { signEvent } from '@/sign.ts';
 import { toAccount, toStatus } from '@/transformers/nostr-to-mastoapi.ts';
 import { buildLinkHeader, eventDateComparator, lookupAccount, nostrNow, paginationSchema, parseBody } from '@/utils.ts';
@@ -154,7 +154,7 @@ const updateCredentialsController: AppController = async (c) => {
     return c.json({ error: 'Could not find user.' }, 404);
   }
 
-  const meta = parseMetaContent(author);
+  const meta = jsonMetaContentSchema.parse(author.content);
   meta.name = result.data.display_name ?? meta.name;
   meta.about = result.data.note ?? meta.about;
 

src/schema.ts

@@ -1,9 +1,5 @@
 import { z } from '@/deps.ts';
 
-import type { Event } from './event.ts';
-
-const optionalString = z.string().optional().catch(undefined);
-
 /** Validates individual items in an array, dropping any that aren't valid. */
 function filteredArray<T extends z.ZodTypeAny>(schema: T) {
   return z.any().array().catch([])
@@ -24,31 +20,6 @@ const jsonSchema = z.string().transform((value, ctx) => {
   }
 });
 
-const metaContentSchema = z.object({
-  name: optionalString,
-  about: optionalString,
-  picture: optionalString,
-  banner: optionalString,
-  nip05: optionalString,
-  lud16: optionalString,
-});
-
-/** Author metadata from Event<0>. */
-type MetaContent = z.infer<typeof metaContentSchema>;
-
-/**
- * Get (and validate) data from a kind 0 event.
- * https://github.com/nostr-protocol/nips/blob/master/01.md
- */
-function parseMetaContent(event: Event<0>): MetaContent {
-  try {
-    const json = JSON.parse(event.content);
-    return metaContentSchema.passthrough().parse(json);
-  } catch (_e) {
-    return {};
-  }
-}
-
 /** Alias for `safeParse`, but instead of returning a success object it returns the value (or undefined on fail). */
 function parseValue<T>(schema: z.ZodType<T>, value: unknown): T | undefined {
   const result = schema.safeParse(value);
@@ -83,15 +54,4 @@ const decode64Schema = z.string().transform((value, ctx) => {
 
 const hashtagSchema = z.string().regex(/^\w{1,30}$/);
 
-export {
+export { decode64Schema, emojiTagSchema, filteredArray, hashtagSchema, jsonSchema, parseRelay, relaySchema };
-  decode64Schema,
-  emojiTagSchema,
-  filteredArray,
-  hashtagSchema,
-  jsonSchema,
-  type MetaContent,
-  metaContentSchema,
-  parseMetaContent,
-  parseRelay,
-  relaySchema,
-};

src/schemas/nostr.ts

@@ -1,5 +1,7 @@
 import { verifySignature, z } from '@/deps.ts';
 
+import { jsonSchema } from '../schema.ts';
+
 /** Schema to validate Nostr hex IDs such as event IDs and pubkeys. */
 const hexIdSchema = z.string().regex(/^[0-9a-f]{64}$/);
 
@@ -37,4 +39,28 @@ const clientMsgSchema = z.union([
   z.tuple([z.literal('CLOSE'), z.string().min(1)]),
 ]);
 
-export { clientMsgSchema, filterSchema, hexIdSchema, signedEventSchema };
+/** Kind 0 content schema. */
+const metaContentSchema = z.object({
+  name: z.string().optional().catch(undefined),
+  about: z.string().optional().catch(undefined),
+  picture: z.string().optional().catch(undefined),
+  banner: z.string().optional().catch(undefined),
+  nip05: z.string().optional().catch(undefined),
+  lud16: z.string().optional().catch(undefined),
+}).partial().passthrough();
+
+/** Parses kind 0 content from a JSON string. */
+const jsonMetaContentSchema = jsonSchema.pipe(metaContentSchema).catch({});
+
+/** Author metadata from Event<0>. */
+type MetaContent = z.infer<typeof metaContentSchema>;
+
+export {
+  clientMsgSchema,
+  filterSchema,
+  hexIdSchema,
+  jsonMetaContentSchema,
+  type MetaContent,
+  metaContentSchema,
+  signedEventSchema,
+};

src/transformers/nostr-to-activitypub.ts

@@ -1,5 +1,5 @@
 import { Conf } from '@/config.ts';
-import { parseMetaContent } from '@/schema.ts';
+import { jsonMetaContentSchema } from '@/schemas/nostr.ts';
 import { getPublicKeyPem } from '@/utils/rsa.ts';
 
 import type { Event } from '@/event.ts';
@@ -7,7 +7,7 @@ import type { Actor } from '@/schemas/activitypub.ts';
 
 /** Nostr metadata event to ActivityPub actor. */
 async function toActor(event: Event<0>, username: string): Promise<Actor | undefined> {
-  const content = parseMetaContent(event);
+  const content = jsonMetaContentSchema.parse(event.content);
 
   return {
     type: 'Person',

src/transformers/nostr-to-mastoapi.ts

@@ -6,7 +6,8 @@ import { findReplyTag, lodash, nip19, sanitizeHtml, TTLCache, unfurl, z } from '
 import { type Event } from '@/event.ts';
 import { verifyNip05Cached } from '@/nip05.ts';
 import { getMediaLinks, type MediaLink, parseNoteContent } from '@/note.ts';
-import { emojiTagSchema, filteredArray, type MetaContent, parseMetaContent } from '@/schema.ts';
+import { emojiTagSchema, filteredArray } from '@/schema.ts';
+import { jsonMetaContentSchema } from '@/schemas/nostr.ts';
 import { type Nip05, nostrDate, parseNip05, Time } from '@/utils.ts';
 
 const DEFAULT_AVATAR = 'https://gleasonator.com/images/avi.png';
@@ -20,7 +21,7 @@ async function toAccount(event: Event<0>, opts: ToAccountOpts = {}) {
   const { withSource = false } = opts;
 
   const { pubkey } = event;
-  const { name, nip05, picture, banner, about }: MetaContent = parseMetaContent(event);
+  const { name, nip05, picture, banner, about } = jsonMetaContentSchema.parse(event.content);
   const npub = nip19.npubEncode(pubkey);
 
   let parsed05: Nip05 | undefined;