refactoring

Resolve #7779

packages/backend/src/remote/activitypub/renderer/announce.ts

@@ -0,0 +1,29 @@
+import config from '@/config/index';
+import { Note } from '@/models/entities/note';
+
+export default (object: any, note: Note) => {
+	const attributedTo = `${config.url}/users/${note.userId}`;
+
+	let to: string[] = [];
+	let cc: string[] = [];
+
+	if (note.visibility === 'public') {
+		to = ['https://www.w3.org/ns/activitystreams#Public'];
+		cc = [`${attributedTo}/followers`];
+	} else if (note.visibility === 'home') {
+		to = [`${attributedTo}/followers`];
+		cc = ['https://www.w3.org/ns/activitystreams#Public'];
+	} else {
+		return null;
+	}
+
+	return {
+		id: `${config.url}/notes/${note.id}/activity`,
+		actor: `${config.url}/users/${note.userId}`,
+		type: 'Announce',
+		published: note.createdAt.toISOString(),
+		to,
+		cc,
+		object
+	};
+};