refactoring

Resolve #7779

packages/backend/src/services/user-list/push.ts

@@ -0,0 +1,27 @@
+import { publishUserListStream } from '@/services/stream';
+import { User } from '@/models/entities/user';
+import { UserList } from '@/models/entities/user-list';
+import { UserListJoinings, Users } from '@/models/index';
+import { UserListJoining } from '@/models/entities/user-list-joining';
+import { genId } from '@/misc/gen-id';
+import { fetchProxyAccount } from '@/misc/fetch-proxy-account';
+import createFollowing from '../following/create';
+
+export async function pushUserToUserList(target: User, list: UserList) {
+	await UserListJoinings.insert({
+		id: genId(),
+		createdAt: new Date(),
+		userId: target.id,
+		userListId: list.id
+	} as UserListJoining);
+
+	publishUserListStream(list.id, 'userAdded', await Users.pack(target));
+
+	// このインスタンス内にこのリモートユーザーをフォローしているユーザーがいなくても投稿を受け取るためにダミーのユーザーがフォローしたということにする
+	if (Users.isRemoteUser(target)) {
+		const proxy = await fetchProxyAccount();
+		if (proxy) {
+			createFollowing(proxy, target);
+		}
+	}
+}