Copy some ActivityPub conversion code from Mostr
This commit is contained in:
Alex Gleason
parent
1923b65099
commit
0d4b9e416c
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@ -0,0 +1,323 @@
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import { z } from '@/deps.ts';
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const apId = z.string().url();
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const recipients = z.array(z.string()).catch([]);
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const published = () => z.string().datetime().catch(new Date().toISOString());
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/** Validates individual items in an array, dropping any that aren't valid. */
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function filteredArray<T extends z.ZodTypeAny>(schema: T) {
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return z.any().array()
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.transform((arr) => (
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arr.map((item) => {
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const parsed = schema.safeParse(item);
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return parsed.success ? parsed.data : undefined;
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}).filter((item): item is z.infer<T> => Boolean(item))
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));
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}
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const imageSchema = z.object({
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type: z.literal('Image').catch('Image'),
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url: z.string().url(),
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});
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const attachmentSchema = z.object({
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type: z.literal('Document').catch('Document'),
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mediaType: z.string().optional().catch(undefined),
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url: z.string().url(),
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});
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const mentionSchema = z.object({
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type: z.literal('Mention'),
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href: z.string().url(),
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name: z.string().optional().catch(undefined),
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});
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const hashtagSchema = z.object({
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type: z.literal('Hashtag'),
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href: z.string().url(),
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name: z.string(),
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});
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const emojiSchema = z.object({
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type: z.literal('Emoji'),
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icon: imageSchema,
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name: z.string(),
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});
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const tagSchema = z.discriminatedUnion('type', [
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mentionSchema,
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hashtagSchema,
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emojiSchema,
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]);
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const propertyValueSchema = z.object({
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type: z.literal('PropertyValue'),
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name: z.string(),
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value: z.string(),
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verified_at: z.string().nullish(),
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});
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/** https://codeberg.org/fediverse/fep/src/branch/main/feps/fep-fffd.md */
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const proxySchema = z.object({
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protocol: z.string().url(),
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proxied: z.string(),
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authoritative: z.boolean().optional().catch(undefined),
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});
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const personSchema = z.object({
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type: z.literal('Person'),
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id: apId,
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icon: imageSchema.optional().catch(undefined),
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image: imageSchema.optional().catch(undefined),
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name: z.string().catch(''),
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preferredUsername: z.string(),
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inbox: apId,
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followers: apId.optional().catch(undefined),
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following: apId.optional().catch(undefined),
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outbox: apId.optional().catch(undefined),
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summary: z.string().catch(''),
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attachment: filteredArray(propertyValueSchema).catch([]),
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tag: filteredArray(emojiSchema).catch([]),
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endpoints: z.object({
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sharedInbox: apId.optional(),
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}).optional().catch({}),
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publicKey: z.object({
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id: apId,
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owner: apId,
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publicKeyPem: z.string(),
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}).optional().catch(undefined),
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proxyOf: z.array(proxySchema).optional().catch(undefined),
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});
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const applicationSchema = personSchema.merge(z.object({ type: z.literal('Application') }));
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const groupSchema = personSchema.merge(z.object({ type: z.literal('Group') }));
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const organizationSchema = personSchema.merge(z.object({ type: z.literal('Organization') }));
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const serviceSchema = personSchema.merge(z.object({ type: z.literal('Service') }));
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const actorSchema = z.discriminatedUnion('type', [
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personSchema,
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applicationSchema,
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groupSchema,
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organizationSchema,
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serviceSchema,
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]);
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const noteSchema = z.object({
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type: z.literal('Note'),
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id: apId,
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to: recipients,
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cc: recipients,
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content: z.string(),
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attachment: z.array(attachmentSchema).optional().catch(undefined),
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tag: filteredArray(tagSchema).catch([]),
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inReplyTo: apId.optional().catch(undefined),
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attributedTo: apId,
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published: published(),
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sensitive: z.boolean().optional().catch(undefined),
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summary: z.string().nullish().catch(undefined),
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quoteUrl: apId.optional().catch(undefined),
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source: z.object({
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content: z.string(),
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mediaType: z.literal('text/markdown'),
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}).optional().catch(undefined),
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proxyOf: z.array(proxySchema).optional().catch(undefined),
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});
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const flexibleNoteSchema = noteSchema.extend({
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quoteURL: apId.optional().catch(undefined),
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quoteUri: apId.optional().catch(undefined),
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_misskey_quote: apId.optional().catch(undefined),
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}).transform((note) => {
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const { quoteUrl, quoteUri, quoteURL, _misskey_quote, ...rest } = note;
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return {
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quoteUrl: quoteUrl || quoteUri || quoteURL || _misskey_quote,
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...rest,
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};
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});
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// https://github.com/colinhacks/zod/discussions/2100#discussioncomment-5109781
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const objectSchema = z.union([
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flexibleNoteSchema,
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personSchema,
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applicationSchema,
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groupSchema,
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organizationSchema,
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serviceSchema,
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]).pipe(
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z.discriminatedUnion('type', [
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noteSchema,
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personSchema,
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applicationSchema,
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groupSchema,
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organizationSchema,
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serviceSchema,
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]),
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);
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const createNoteSchema = z.object({
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type: z.literal('Create'),
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id: apId,
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to: recipients,
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cc: recipients,
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actor: apId,
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object: noteSchema,
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published: published(),
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proxyOf: z.array(proxySchema).optional().catch(undefined),
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});
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const announceNoteSchema = z.object({
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type: z.literal('Announce'),
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id: apId,
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to: recipients,
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cc: recipients,
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actor: apId,
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object: apId.or(noteSchema),
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published: published(),
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proxyOf: z.array(proxySchema).optional().catch(undefined),
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});
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const followSchema = z.object({
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type: z.literal('Follow'),
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id: apId,
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to: recipients,
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cc: recipients,
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actor: apId,
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object: apId,
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proxyOf: z.array(proxySchema).optional().catch(undefined),
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});
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const acceptSchema = z.object({
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type: z.literal('Accept'),
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id: apId,
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actor: apId,
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to: recipients,
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cc: recipients,
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object: apId.or(followSchema),
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});
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const likeSchema = z.object({
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type: z.literal('Like'),
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id: apId,
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actor: apId,
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object: apId,
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to: recipients,
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cc: recipients,
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proxyOf: z.array(proxySchema).optional().catch(undefined),
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});
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const emojiReactSchema = z.object({
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type: z.literal('EmojiReact'),
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id: apId,
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actor: apId,
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object: apId,
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content: z.string().refine((v) => /\p{Extended_Pictographic}/u.test(v)),
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to: recipients,
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cc: recipients,
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proxyOf: z.array(proxySchema).optional().catch(undefined),
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});
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const deleteSchema = z.object({
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type: z.literal('Delete'),
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id: apId,
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actor: apId,
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object: apId,
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to: recipients,
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cc: recipients,
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proxyOf: z.array(proxySchema).optional().catch(undefined),
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});
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const updateActorSchema = z.object({
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type: z.literal('Update'),
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id: apId,
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actor: apId,
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to: recipients,
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cc: recipients,
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object: actorSchema,
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proxyOf: z.array(proxySchema).optional().catch(undefined),
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});
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/**
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* A custom Zap activity type we made up, based on:
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* https://github.com/nostr-protocol/nips/blob/master/57.md
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*/
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const zapSchema = z.object({
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type: z.literal('Zap'),
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id: apId,
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actor: apId,
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object: apId,
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to: recipients,
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cc: recipients,
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proxyOf: z.array(proxySchema).optional().catch(undefined),
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});
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const activitySchema = z.discriminatedUnion('type', [
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followSchema,
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acceptSchema,
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createNoteSchema,
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announceNoteSchema,
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updateActorSchema,
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likeSchema,
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emojiReactSchema,
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deleteSchema,
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zapSchema,
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]).refine((activity) => {
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const ids: string[] = [activity.id];
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if (activity.type === 'Create') {
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ids.push(
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activity.object.id,
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activity.object.attributedTo,
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);
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}
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if (activity.type === 'Update') {
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ids.push(activity.object.id);
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}
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const { origin: actorOrigin } = new URL(activity.actor);
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// Object containment
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return ids.every((id) => {
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const { origin: idOrigin } = new URL(id);
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return idOrigin === actorOrigin;
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});
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});
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type Activity = z.infer<typeof activitySchema>;
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type CreateNote = z.infer<typeof createNoteSchema>;
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type Announce = z.infer<typeof announceNoteSchema>;
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type Update = z.infer<typeof updateActorSchema>;
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type Object = z.infer<typeof objectSchema>;
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type Follow = z.infer<typeof followSchema>;
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type Accept = z.infer<typeof acceptSchema>;
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type Actor = z.infer<typeof actorSchema>;
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type Note = z.infer<typeof noteSchema>;
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type Mention = z.infer<typeof mentionSchema>;
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type Hashtag = z.infer<typeof hashtagSchema>;
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type Emoji = z.infer<typeof emojiSchema>;
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type Like = z.infer<typeof likeSchema>;
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type EmojiReact = z.infer<typeof emojiReactSchema>;
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type Delete = z.infer<typeof deleteSchema>;
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type Zap = z.infer<typeof zapSchema>;
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type Proxy = z.infer<typeof proxySchema>;
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export { acceptSchema, activitySchema, actorSchema, emojiSchema, followSchema, imageSchema, noteSchema, objectSchema };
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export type {
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Accept,
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Activity,
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Actor,
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Announce,
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CreateNote,
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Delete,
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Emoji,
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EmojiReact,
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Follow,
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Hashtag,
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Like,
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Mention,
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Note,
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Object,
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Proxy,
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Update,
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Zap,
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};
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@ -0,0 +1,41 @@
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import { Conf } from '@/config.ts';
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import { parseMetaContent } from '@/schema.ts';
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import type { Event } from '@/event.ts';
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import type { Actor } from '@/schemas/activitypub.ts';
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/** Nostr metadata event to ActivityPub actor. */
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async function toActor(event: Event<0>, username: string): Promise<Actor> {
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const content = parseMetaContent(event);
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return {
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type: 'Person',
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id: Conf.local(`/users/${username}`),
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name: content?.name || '',
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preferredUsername: username,
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inbox: Conf.local(`/users/${username}/inbox`),
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followers: Conf.local(`/users/${username}/followers`),
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following: Conf.local(`/users/${username}/following`),
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outbox: Conf.local(`/users/${username}/outbox`),
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icon: content.picture
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? {
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type: 'Image',
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url: content.picture,
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}
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: undefined,
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image: content.banner
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? {
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type: 'Image',
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url: content.banner,
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}
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: undefined,
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summary: content.about ?? '',
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attachment: [],
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tag: [],
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endpoints: {
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sharedInbox: Conf.local('/inbox'),
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},
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};
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}
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export { toActor };
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