Send Delete activity on suspend (#5165)

* Send Delete Person activity

* Delete activityの後にフォロー解除する

* アカウント削除でもDelete activity

src/services/unsuspend-user.ts

@@ -0,0 +1,35 @@
+import renderDelete from '../remote/activitypub/renderer/delete';
+import renderUndo from '../remote/activitypub/renderer/undo';
+import { renderActivity } from '../remote/activitypub/renderer';
+import { deliver } from '../queue';
+import config from '../config';
+import { User } from '../models/entities/user';
+import { Users, Followings } from '../models';
+import { Not, IsNull } from 'typeorm';
+
+export async function doPostUnsuspend(user: User) {
+	if (Users.isLocalUser(user)) {
+		// 知り得る全SharedInboxにUndo Delete配信
+		const content = renderActivity(renderUndo(renderDelete(`${config.url}/users/${user.id}`, user), user));
+
+		const queue: string[] = [];
+
+		const followings = await Followings.find({
+			where: [
+				{ followerSharedInbox: Not(IsNull()) },
+				{ followeeSharedInbox: Not(IsNull()) }
+			],
+			select: ['followerSharedInbox', 'followeeSharedInbox']
+		});
+
+		const inboxes = followings.map(x => x.followerSharedInbox || x.followeeSharedInbox);
+
+		for (const inbox of inboxes) {
+			if (inbox != null && !queue.includes(inbox)) queue.push(inbox);
+		}
+
+		for (const inbox of queue) {
+			deliver(user as any, content, inbox);
+		}
+	}
+}