refactoring

Resolve #7779

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

@@ -0,0 +1,15 @@
+import config from '@/config/index';
+import { User } from '@/models/entities/user';
+import { Users } from '@/models/index';
+
+export default (follower: { id: User['id']; host: User['host']; uri: User['host'] }, followee: { id: User['id']; host: User['host']; uri: User['host'] }, requestId?: string) => {
+	const follow = {
+		type: 'Follow',
+		actor: Users.isLocalUser(follower) ? `${config.url}/users/${follower.id}` : follower.uri,
+		object: Users.isLocalUser(followee) ? `${config.url}/users/${followee.id}` : followee.uri
+	} as any;
+
+	if (requestId) follow.id = requestId;
+
+	return follow;
+};