Implement Update Question (#4435)

* Update remote votes count

* save updatedAt

* deliver Update

* use renderNote

* use id

* fix typeof

src/services/note/polls/update.ts

@@ -0,0 +1,61 @@
+import * as mongo from 'mongodb';
+import Note, { INote } from '../../../models/note';
+import { updateQuestion } from '../../../remote/activitypub/models/question';
+import ms = require('ms');
+import Logger from '../../logger';
+import User, { isLocalUser, isRemoteUser } from '../../../models/user';
+import Following from '../../../models/following';
+import renderUpdate from '../../../remote/activitypub/renderer/update';
+import { renderActivity } from '../../../remote/activitypub/renderer';
+import { deliver } from '../../../queue';
+import renderNote from '../../../remote/activitypub/renderer/note';
+
+const logger = new Logger('pollsUpdate');
+
+export async function triggerUpdate(note: INote) {
+	if (!note.updatedAt || Date.now() - new Date(note.updatedAt).getTime() > ms('1min')) {
+		logger.info(`Updating ${note._id}`);
+
+		try {
+			const updated = await updateQuestion(note.uri);
+			logger.info(`Updated ${note._id} ${updated ? 'changed' : 'nochange'}`);
+		} catch (e) {
+			logger.error(e);
+		}
+	}
+}
+
+export async function deliverQuestionUpdate(noteId: mongo.ObjectID) {
+	const note = await Note.findOne({
+		_id: noteId,
+	});
+
+	const user = await User.findOne({
+		_id: note.userId
+	});
+
+	const followers = await Following.find({
+		followeeId: user._id
+	});
+
+	const queue: string[] = [];
+
+	// フォロワーがリモートユーザーかつ投稿者がローカルユーザーならUpdateを配信
+	if (isLocalUser(user)) {
+		for (const following of followers) {
+			const follower = following._follower;
+
+			if (isRemoteUser(follower)) {
+				const inbox = follower.sharedInbox || follower.inbox;
+				if (!queue.includes(inbox)) queue.push(inbox);
+			}
+		}
+
+		if (queue.length > 0) {
+			const content = renderActivity(renderUpdate(await renderNote(note, false), user));
+			for (const inbox of queue) {
+				deliver(user, content, inbox);
+			}
+		}
+	}
+}