diff --git a/packages/hydrooj/TODO b/packages/hydrooj/TODO
index f4bd774bd..dc5ac8aab 100644
--- a/packages/hydrooj/TODO
+++ b/packages/hydrooj/TODO
@@ -1,7 +1,11 @@
 @requireCsrfToken
-discussion前端权限节点显示异常?
 举报功能
 SETTINGS_PRIVACY.allowRegisteredUsers
 model.setting.ui.name
 pdoc.secretConfig?
 message.markAsRead
+批量导入用户
+domain_join_application
+user.displayName
+problem.difficulty_setting
+用户等级计算
\ No newline at end of file
diff --git a/packages/hydrooj/package.json b/packages/hydrooj/package.json
index 98590808a..03342fd89 100644
--- a/packages/hydrooj/package.json
+++ b/packages/hydrooj/package.json
@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "2.12.3",
+    "version": "2.12.4",
     "bin": "bin/hydrooj.js",
     "main": "dist/loader.js",
     "typings": "dist/loader.d.ts",
diff --git a/packages/hydrooj/src/entry/common.ts b/packages/hydrooj/src/entry/common.ts
index 16bf59eac..87867954a 100644
--- a/packages/hydrooj/src/entry/common.ts
+++ b/packages/hydrooj/src/entry/common.ts
@@ -26,8 +26,7 @@ export const builtinHandler = [
 ];
 
 export const builtinScript = [
-    'rating', 'register', 'problemStat', 'blacklist', 'setSuperadmin',
-    'deleteUser',
+    'rating', 'register', 'problemStat', 'blacklist', 'deleteUser',
     'upgrade0_1',
 ];
 
diff --git a/packages/hydrooj/src/model/setting.ts b/packages/hydrooj/src/model/setting.ts
index 2a4aa0eb4..2b02ed2e2 100644
--- a/packages/hydrooj/src/model/setting.ts
+++ b/packages/hydrooj/src/model/setting.ts
@@ -34,9 +34,11 @@ export const DOMAIN_USER_SETTINGS_BY_KEY: SettingDict = {};
 export const DOMAIN_SETTINGS_BY_KEY: SettingDict = {};
 export const SYSTEM_SETTINGS_BY_KEY: SettingDict = {};
 
+export type SettingType = 'text' | 'number' | 'markdown' | 'password' | 'select' | 'boolean' | 'textarea';
+
 export const Setting = (
     family: string, key: string, range: Array<[string, string]> | Dictionary<string> = null,
-    value: any = null, type = 'text', name = '',
+    value: any = null, type: SettingType = 'text', name = '',
     desc = '', flag = 0,
 ): _Setting => ({
     family, key, range, value, type, name, desc, flag,
@@ -103,11 +105,12 @@ DomainSetting(
 );
 
 DomainUserSetting(
-    Setting('setting_info', 'displayName', null, null, 'string', 'display name'),
+    Setting('setting_info', 'displayName', null, null, 'text', 'display name'),
     Setting('setting_storage', 'nAccept', null, 0, 'number', 'nAccept', null, FLAG_HIDDEN | FLAG_DISABLED),
     Setting('setting_storage', 'nSubmit', null, 0, 'number', 'nSubmit', null, FLAG_HIDDEN | FLAG_DISABLED),
     Setting('setting_storage', 'nLike', null, 0, 'number', 'nLike', null, FLAG_HIDDEN | FLAG_DISABLED),
     Setting('setting_storage', 'rp', null, 1500, 'number', 'RP', null, FLAG_HIDDEN | FLAG_DISABLED),
+    Setting('setting_storage', 'level', null, 0, 'number', 'level', null, FLAG_HIDDEN | FLAG_DISABLED),
 );
 
 SystemSetting(
diff --git a/packages/hydrooj/src/model/user.ts b/packages/hydrooj/src/model/user.ts
index 4340c1572..0c12ff6aa 100644
--- a/packages/hydrooj/src/model/user.ts
+++ b/packages/hydrooj/src/model/user.ts
@@ -54,7 +54,7 @@ export class User implements _User {
 
     [key: string]: any;
 
-    constructor(udoc, dudoc) {
+    constructor(udoc: Udoc, dudoc) {
         this.udoc = () => udoc;
         this.dudoc = () => dudoc;
         this._id = udoc._id;
@@ -223,6 +223,16 @@ export async function setPriv(uid: number, priv: number): Promise<Udoc | null> {
     return udoc.value;
 }
 
+export async function setSuperAdmin(uid: number) {
+    await setPriv(uid, PRIV.PRIV_ALL);
+    return uid;
+}
+
+export async function setJudge(uid: number) {
+    await setPriv(uid, PRIV.PRIV_JUDGE);
+    return uid;
+}
+
 export function ban(uid: number) {
     return Promise.all([
         setPriv(uid, PRIV.PRIV_NONE),
@@ -252,5 +262,7 @@ global.Hydro.model.user = {
     getPrefixList,
     setPriv,
     getList,
+    setSuperAdmin,
+    setJudge,
     ban,
 };
diff --git a/packages/hydrooj/src/script/rating.ts b/packages/hydrooj/src/script/rating.ts
index 30230b94f..0573d2a56 100644
--- a/packages/hydrooj/src/script/rating.ts
+++ b/packages/hydrooj/src/script/rating.ts
@@ -9,6 +9,7 @@ import * as record from '../model/record';
 import { STATUS } from '../model/builtin';
 import rating from '../lib/rating';
 import paginate from '../lib/paginate';
+import ranked from '../lib/rank';
 
 export const description = 'Calculate rp of a domain, or all domains';
 
@@ -83,6 +84,41 @@ async function runContest(...arg: any[]) {
     });
 }
 
+export async function calcLevel(domainId: string, report: Function) {
+    const dudocs = await domain.getMultiInDomain(domainId).sort('rp', -1).toArray();
+    let last = { rp: null };
+    let rank = 0;
+    let count = 0;
+    const coll = global.Hydro.service.db.collection('domain.user');
+    let bulk = coll.initializeUnorderedBulkOp();
+    for (const dudoc of dudocs) {
+        count++;
+        if (!dudoc.rp) dudoc.rp = null;
+        if (dudoc.rp !== last.rp) rank = count;
+        bulk.find({ _id: dudoc._id }).updateOne({ $set: { rank } });
+        last = dudoc;
+        if (count % 1000 === 0) report({ message: `#${count}: Rank ${rank}` });
+        await bulk.execute();
+    }
+    if (!rank) {
+        report({ message: 'No one has rp' });
+        return;
+    }
+    const levels = global.Hydro.model.builtin.LEVELS;
+    bulk = coll.initializeUnorderedBulkOp();
+    for (let i = 0; i < levels.length; i++) {
+        report({ message: 'Updating users levelled {0}'.format(levels[i][0]) });
+        bulk.find({
+            domainId,
+            $and: [{ rank: { $lte: levels[i][1] } }, { rank: { $gt: levels[i + 1][1] } }],
+        }).update({ $set: { level: levels[i][0] } });
+    }
+    const i = levels.length - 1;
+    report({ message: 'Updating users levelled {0}'.format(levels[i][0]) });
+    bulk.find({ domainId, rank: { $lte: levels[i][1] } }).update({ $set: { level: levels[i][0] } });
+    await bulk.execute();
+}
+
 async function runInDomain(domainId: string, isSub: boolean, report: Function) {
     const udict: ND = {};
     const contests = await contest.getMulti(domainId, { rated: true }, -1).sort('endAt', -1).toArray();
@@ -114,6 +150,7 @@ async function runInDomain(domainId: string, isSub: boolean, report: Function) {
         tasks.push(domain.setUserInDomain(domainId, parseInt(uid, 10), { rp: udict[uid] }));
     }
     await Promise.all(tasks);
+    await calcLevel(domainId, report);
 }
 
 export async function run({ domainId }, report: Function) {
diff --git a/packages/hydrooj/src/script/setSuperadmin.ts b/packages/hydrooj/src/script/setSuperadmin.ts
deleted file mode 100644
index 5eb05142f..000000000
--- a/packages/hydrooj/src/script/setSuperadmin.ts
+++ /dev/null
@@ -1,18 +0,0 @@
-// TODO add a set_priv interface
-import * as user from '../model/user';
-import { PRIV } from '../model/builtin';
-
-export const description = 'Set a user as superadmin.';
-
-export async function run({ uid }) {
-    uid = parseInt(uid, 10);
-    if (Number.isNaN(uid)) throw new Error('uid');
-    await user.setPriv(uid, PRIV.PRIV_ALL);
-    return uid;
-}
-
-export const validate = {
-    uid: { $type: 'number' },
-};
-
-global.Hydro.script.setSuperadmin = { run, description, validate };