互換性でnotificationIdを受け付けるように

src/server/api/endpoints/notifications/read.ts

@@ -2,6 +2,7 @@ import $ from 'cafy';
 import { ID } from '@/misc/cafy-id';
 import define from '../../define';
 import { readNotification } from '../../common/read-notification';
+import { ApiError } from '../../error';
 
 export const meta = {
 	desc: {
@@ -13,9 +14,19 @@ export const meta = {
 
 	requireCredential: true as const,
 
+	kind: 'write:notifications',
+
 	params: {
+		notificationId: {
+			validator: $.optional.type(ID),
+			desc: {
+				'ja-JP': '対象の通知のID',
+				'en-US': 'Target notification ID.'
+			}
+		},
+
 		notificationIds: {
-			validator: $.arr($.type(ID)),
+			validator: $.optional.arr($.type(ID)),
 			desc: {
 				'ja-JP': '対象の通知のIDの配列',
 				'en-US': 'Target notification IDs.'
@@ -23,7 +34,24 @@ export const meta = {
 		}
 	},
 
-	kind: 'write:notifications'
+	errors: {
+		noNotificationRequested: {
+			message: 'You requested no notification.',
+			code: 'NO_NOTIFICATION_REQUESTED',
+			id: '1dee2109-b88b-21cf-3935-607dad60f5b0'
+		},
+	},
 };
 
-export default define(meta, async (ps, user) => readNotification(user.id, ps.notificationIds));
+export default define(meta, async (ps, user) => {
+	let notificationIds = [] as string[];
+
+	if (ps.notificationId) notificationIds.push(ps.notificationId);
+	if (ps.notificationIds) notificationIds = notificationIds.concat(ps.notificationIds);
+
+	if (notificationIds.length === 0) {
+		throw new ApiError(meta.errors.noNotificationRequested);
+	}
+
+	return readNotification(user.id, notificationIds)
+});