Christopher
120 lines
2.9 KiB
TypeScript
120 lines
2.9 KiB
TypeScript
/**
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* ActivityPub Actor Utilities
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*
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* Handles the serialization of Synapsis users to ActivityPub Actor format.
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* See: https://www.w3.org/TR/activitypub/#actor-objects
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*/
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import type { users } from '@/db/schema';
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type User = typeof users.$inferSelect;
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const ACTIVITY_STREAMS_CONTEXT = 'https://www.w3.org/ns/activitystreams';
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const SECURITY_CONTEXT = 'https://w3id.org/security/v1';
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export interface ActivityPubActor {
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'@context': (string | object)[];
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id: string;
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type: 'Person';
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preferredUsername: string;
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name: string | null;
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summary: string | null;
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url: string;
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inbox: string;
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outbox: string;
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followers: string;
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following: string;
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icon?: {
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type: 'Image';
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mediaType: string;
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url: string;
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};
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image?: {
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type: 'Image';
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mediaType: string;
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url: string;
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};
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publicKey: {
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id: string;
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owner: string;
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publicKeyPem: string;
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};
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endpoints: {
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sharedInbox: string;
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};
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}
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/**
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* Convert a Synapsis user to an ActivityPub Actor
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*/
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export function userToActor(user: User, nodeDomain: string): ActivityPubActor {
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const actorUrl = `https://${nodeDomain}/users/${user.handle}`;
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const actor: ActivityPubActor = {
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'@context': [
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ACTIVITY_STREAMS_CONTEXT,
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SECURITY_CONTEXT,
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{
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'manuallyApprovesFollowers': 'as:manuallyApprovesFollowers',
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'toot': 'http://joinmastodon.org/ns#',
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'featured': {
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'@id': 'toot:featured',
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'@type': '@id',
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},
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},
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],
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id: actorUrl,
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type: 'Person',
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preferredUsername: user.handle,
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name: user.displayName,
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summary: user.bio,
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url: actorUrl,
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inbox: `${actorUrl}/inbox`,
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outbox: `${actorUrl}/outbox`,
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followers: `${actorUrl}/followers`,
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following: `${actorUrl}/following`,
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publicKey: {
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id: `${actorUrl}#main-key`,
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owner: actorUrl,
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publicKeyPem: user.publicKey,
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},
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endpoints: {
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sharedInbox: `https://${nodeDomain}/inbox`,
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},
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};
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// Add avatar if present
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if (user.avatarUrl) {
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actor.icon = {
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type: 'Image',
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mediaType: 'image/png', // TODO: detect actual type
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url: user.avatarUrl,
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};
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}
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// Add header if present
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if (user.headerUrl) {
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actor.image = {
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type: 'Image',
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mediaType: 'image/png',
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url: user.headerUrl,
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};
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}
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return actor;
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}
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/**
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* Get the actor URL for a user
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*/
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export function getActorUrl(handle: string, nodeDomain: string): string {
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return `https://${nodeDomain}/users/${handle}`;
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}
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/**
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* Get the inbox URL for a user
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*/
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export function getInboxUrl(handle: string, nodeDomain: string): string {
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return `https://${nodeDomain}/users/${handle}/inbox`;
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}
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