refactoring

Resolve #7779

packages/backend/src/remote/activitypub/renderer/follow-user.ts

@@ -0,0 +1,12 @@
+import config from '@/config/index';
+import { Users } from '@/models/index';
+import { User } from '@/models/entities/user';
+
+/**
+ * Convert (local|remote)(Follower|Followee)ID to URL
+ * @param id Follower|Followee ID
+ */
+export default async function renderFollowUser(id: User['id']): Promise<any> {
+	const user = await Users.findOneOrFail(id);
+	return Users.isLocalUser(user) ? `${config.url}/users/${user.id}` : user.uri;
+}