インスタンス運営者がピン留めユーザーを設定できるように

Related #4892

src/server/api/endpoints/admin/update-meta.ts

@@ -56,6 +56,13 @@ export const meta = {
 			}
 		},
 
+		pinnedUsers: {
+			validator: $.optional.nullable.arr($.str),
+			desc: {
+				'ja-JP': 'ピン留めユーザー'
+			}
+		},
+
 		hiddenTags: {
 			validator: $.optional.nullable.arr($.str),
 			desc: {
@@ -353,6 +360,10 @@ export default define(meta, async (ps) => {
 		set.useStarForReactionFallback = ps.useStarForReactionFallback;
 	}
 
+	if (Array.isArray(ps.pinnedUsers)) {
+		set.pinnedUsers = ps.pinnedUsers;
+	}
+
 	if (Array.isArray(ps.hiddenTags)) {
 		set.hiddenTags = ps.hiddenTags;
 	}

src/server/api/endpoints/meta.ts

@@ -160,6 +160,7 @@ export default define(meta, async (ps, me) => {
 
 	if (me && (me.isAdmin || me.isModerator)) {
 		response.useStarForReactionFallback = instance.useStarForReactionFallback;
+		response.pinnedUsers = instance.pinnedUsers;
 		response.hiddenTags = instance.hiddenTags;
 		response.recaptchaSecretKey = instance.recaptchaSecretKey;
 		response.proxyAccount = instance.proxyAccount;

src/server/api/endpoints/pinned-users.ts

@@ -0,0 +1,33 @@
+import define from '../define';
+import { Users } from '../../../models';
+import { types, bool } from '../../../misc/schema';
+import { fetchMeta } from '../../../misc/fetch-meta';
+import parseAcct from '../../../misc/acct/parse';
+import { User } from '../../../models/entities/user';
+
+export const meta = {
+	tags: ['users'],
+
+	requireCredential: false,
+
+	params: {
+	},
+
+	res: {
+		type: types.array,
+		optional: bool.false, nullable: bool.false,
+		items: {
+			type: types.object,
+			optional: bool.false, nullable: bool.false,
+			ref: 'User',
+		}
+	},
+};
+
+export default define(meta, async (ps, me) => {
+	const meta = await fetchMeta();
+
+	const users = await Promise.all(meta.pinnedUsers.map(acct => Users.findOne(parseAcct(acct))));
+
+	return await Users.packMany(users.filter(x => x !== undefined) as User[], me, { detail: true });
+});