v12 (#5712)

Co-authored-by: MeiMei <30769358+mei23@users.noreply.github.com>
Co-authored-by: Satsuki Yanagi <17376330+u1-liquid@users.noreply.github.com>

src/server/api/endpoints/announcements.ts

@@ -0,0 +1,42 @@
+import $ from 'cafy';
+import { ID } from '../../../misc/cafy-id';
+import define from '../define';
+import { Announcements, AnnouncementReads } from '../../../models';
+import { makePaginationQuery } from '../common/make-pagination-query';
+
+export const meta = {
+	requireCredential: false,
+
+	params: {
+		limit: {
+			validator: $.optional.num.range(1, 100),
+			default: 10
+		},
+
+		sinceId: {
+			validator: $.optional.type(ID),
+		},
+
+		untilId: {
+			validator: $.optional.type(ID),
+		},
+	}
+};
+
+export default define(meta, async (ps, user) => {
+	const query = makePaginationQuery(Announcements.createQueryBuilder('announcement'), ps.sinceId, ps.untilId);
+
+	const announcements = await query.take(ps.limit!).getMany();
+
+	if (user) {
+		const reads = (await AnnouncementReads.find({
+			userId: user.id
+		})).map(x => x.announcementId);
+
+		for (const announcement of announcements) {
+			(announcement as any).isRead = reads.includes(announcement.id);
+		}
+	}
+
+	return announcements;
+});