リモートで投票を見たりしたりできるように (#3940)

* fix type

* expose Question

* Note refs Question

* rename

* wip

* リモート投票の場合リプライ送信

* voteの実装をservicesに移動

* 投票受信

* debug

* つくる

* Revert "つくる"

This reverts commit 0c92458866.

* APIの実装はもどし

* Send Update

* AP type

* Recv Update

* Revert "Recv Update"

This reverts commit ffda39c093.

* Revert "AP type"

This reverts commit 63d8bbe29d.

* Revert "Send Update"

This reverts commit 171b046de5.

* リモートで投票を見る

* 投票はDM

* Provides choices as text for AP

* 絵文字

* fix error

* revert

* APからには不要な処理を削除

* Revert "APからには不要な処理を削除"

This reverts commit 8b5d8af9b0.

* てぬき

* めんどい

* ちっ

* remove unused code

src/server/activitypub.ts

@@ -16,6 +16,7 @@ import Outbox, { packActivity } from './activitypub/outbox';
 import Followers from './activitypub/followers';
 import Following from './activitypub/following';
 import Featured from './activitypub/featured';
+import renderQuestion from '../remote/activitypub/renderer/question';
 
 // Init router
 const router = new Router();
@@ -110,6 +111,36 @@ router.get('/notes/:note/activity', async ctx => {
 	setResponseType(ctx);
 });
 
+// question
+router.get('/questions/:question', async (ctx, next) => {
+	if (!ObjectID.isValid(ctx.params.question)) {
+		ctx.status = 404;
+		return;
+	}
+
+	const poll = await Note.findOne({
+		_id: new ObjectID(ctx.params.question),
+		visibility: { $in: ['public', 'home'] },
+		localOnly: { $ne: true },
+		poll: {
+			$exists: true,
+			$ne: null
+		},
+	});
+
+	if (poll === null) {
+		ctx.status = 404;
+		return;
+	}
+
+	const user = await User.findOne({
+			_id: poll.userId
+	});
+
+	ctx.body = pack(await renderQuestion(user as ILocalUser, poll));
+	setResponseType(ctx);
+});
+
 // outbox
 router.get('/users/:user/outbox', Outbox);