wildebeest/functions/api/v1/statuses/[id]/reblog.ts

68 wiersze
2.8 KiB
TypeScript

// https://docs.joinmastodon.org/methods/statuses/#boost
import type { Queue, DeliverMessageBody } from 'wildebeest/backend/src/types/queue'
import { cors } from 'wildebeest/backend/src/utils/cors'
import type { Env } from 'wildebeest/backend/src/types/env'
import { createReblog } from 'wildebeest/backend/src/mastodon/reblog'
import { getSigningKey } from 'wildebeest/backend/src/mastodon/account'
import { deliverToActor, deliverFollowers } from 'wildebeest/backend/src/activitypub/deliver'
import type { Person } from 'wildebeest/backend/src/activitypub/actors'
import * as actors from 'wildebeest/backend/src/activitypub/actors'
import * as announce from 'wildebeest/backend/src/activitypub/activities/announce'
import { getObjectByMastodonId } from 'wildebeest/backend/src/activitypub/objects'
import type { Note } from 'wildebeest/backend/src/activitypub/objects/note'
import type { ContextData } from 'wildebeest/backend/src/types/context'
import { toMastodonStatusFromObject } from 'wildebeest/backend/src/mastodon/status'
import { originalActorIdSymbol, originalObjectIdSymbol } from 'wildebeest/backend/src/activitypub/objects'
export const onRequest: PagesFunction<Env, any, ContextData> = async ({ env, data, params, request }) => {
const domain = new URL(request.url).hostname
return handleRequest(env.DATABASE, params.id as string, data.connectedActor, env.userKEK, env.QUEUE, domain)
}
export async function handleRequest(
db: D1Database,
id: string,
connectedActor: Person,
userKEK: string,
queue: Queue<DeliverMessageBody>,
domain: string
): Promise<Response> {
const obj = await getObjectByMastodonId(db, id)
if (obj === null) {
return new Response('', { status: 404 })
}
const status = await toMastodonStatusFromObject(db, obj as Note, domain)
if (status === null) {
return new Response('', { status: 404 })
}
if (obj[originalObjectIdSymbol] && obj[originalActorIdSymbol]) {
// Rebloggin an external object delivers the announce activity to the
// post author.
const targetActor = await actors.getAndCache(new URL(obj[originalActorIdSymbol]), db)
if (!targetActor) {
return new Response(`target Actor ${obj[originalActorIdSymbol]} not found`, { status: 404 })
}
const activity = announce.create(connectedActor, new URL(obj[originalObjectIdSymbol]))
const signingKey = await getSigningKey(userKEK, db, connectedActor)
await Promise.all([
// Delivers the announce activity to the post author.
deliverToActor(signingKey, connectedActor, targetActor, activity, domain),
// Share reblogged by delivering the announce activity to followers
deliverFollowers(db, userKEK, connectedActor, activity, queue),
])
}
await createReblog(db, connectedActor, obj)
status.reblogged = true
const headers = {
...cors(),
'content-type': 'application/json; charset=utf-8',
}
return new Response(JSON.stringify(status), { headers })
}