refactoring

Resolve #7779

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

@@ -0,0 +1,14 @@
+import config from '@/config/index';
+import { ILocalUser } from '@/models/entities/user';
+import { UserKeypair } from '@/models/entities/user-keypair';
+import { createPublicKey } from 'crypto';
+
+export default (user: ILocalUser, key: UserKeypair, postfix?: string) => ({
+	id: `${config.url}/users/${user.id}${postfix || '/publickey'}`,
+	type: 'Key',
+	owner: `${config.url}/users/${user.id}`,
+	publicKeyPem: createPublicKey(key.publicKey).export({
+		type: 'spki',
+		format: 'pem'
+	})
+});