SYZOJ 部署&魔改记录

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应教练要求，给学校搞个 OJ。

（就学校那电脑十几年没换了还部署什么 OJ）

部署

一开始用的是 UOJ，但是不会 PHP，为了魔改于是换了 SYZOJ。

然后出了很多奇奇怪怪的错误，装了几次都没成功。

一直用的是清华的更新源，结果 potatoler 无意中发现把更新源换成阿里的就没有遇到之前的问题……

魔改

名字颜色

话说 SYZOJ 怎么都没有个按 rating 显示名字颜色的功能啊 （隔壁 UOJ 早就有了

新建 static/self/custom.css 并加入每种颜色的样式：

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.user-gray {
  color: rgb(191, 191, 191) !important;
}
.user-blue {
  color: rgb(52, 152, 219) !important;
}
.user-green {
  color: rgb(82, 196, 26) !important;
}
.user-orange {
  color: rgb(243, 156, 17) !important;
}
.user-red {
  color: rgb(254, 76, 97) !important;
}
.user-purple {
  color: rgb(157, 61, 207) !important;
}

然后在 views/header.ejs 中加入 <link href="/self/custom.css" rel="stylesheet">。

打开 utility.js，在 module.exports 中加入用于计算颜色的代码：

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makeUserColor(rating, is_admin) {
  if (is_admin) return 'purple';
  else if (rating < 1400) return 'gray';
  else if (rating < 1600) return 'blue';
  else if (rating < 1800) return 'green';
  else if (rating < 2000) return 'orange';
  else return 'red';
}

之后就是在所有 ejs 文件中，将类似 <%= xxx.username %> 的代码改为 <span class="user-<%= syzoj.utils.makeUserColor(xxx.rating, xxx.is_admin) %>"><%= xxx.username %></span>。

改完后发现用户名的字体太细，加上颜色后看着很不舒服，所以把用户名加粗一些。

在 static/self/custom.css 中加入：

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.user-name {
  font-weight: bold;
}

然后在上面修改的代码中，把 class="user-<%= syzoj.utils.makeUserColor(xxx.rating, xxx.is_admin) %>" 改为 class="user-name user-<%= syzoj.utils.makeUserColor(xxx.rating, xxx.is_admin) %>"。

显示姓名

作为校内 OJ，为了方便辨识，所以要加这个功能。（毕竟直接用姓名做用户名看着还是怪难受的（

数据库中用户有 nameplate 属性，代码中也有显示 nameplate 的处理，但是没有修改的接口，于是直接用 nameplate 表示姓名，添加一些代码即可。

首先是在注册页面加一个输入框，将以下代码加入 views/sign_up.ejs 中对应位置：

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<div class="field">
    <label for="nameplate">姓名</label>
    <input type="text" placeholder="" id="nameplate">
</div>

然后在这个文件中的 javascript 代码部分加入提交 nameplate 的代码：

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 url: '/api/sign_up',
 type: 'POST',
 async: true,
 data: {
   username: $("#username").val(),
+  nameplate: $("#nameplate").val(),
   password: password,
   email: $("#email").val(),
   prevUrl: <%- serializejs(req.query.url || '/') %>
 },

之后在 modules/api.js 中加入几段代码：

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 let sendObj = {
   username: req.body.username,
   password: req.body.password,
+  nameplate: req.body.nameplate,
   email: req.body.email,
 };
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 user = await User.create({
   username: req.body.username,
   password: req.body.password,
+  nameplate: req.body.nameplate,
   email: req.body.email,
   is_show: syzoj.config.default.user.show,
   rating: syzoj.config.default.user.rating,
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 user = await User.create({
   username: obj.username,
   password: obj.password,
+  nameplate: obj.nameplate,
   email: obj.email,
   is_show: syzoj.config.default.user.show,
   rating: syzoj.config.default.user.rating,
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 user = await User.create({
   username: obj.username,
   password: obj.password,
+  nameplate: obj.nameplate,
   email: obj.email,
   public_email: true
 });

另外在修改个人信息的页面也要加入修改姓名的接口，所以在 views/user_edit.ejs 中加入代码：

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<div class="field">
    <label for="nameplate">姓名</label>
    <input type="text" id="nameplate" name="nameplate" value="<%= edited_user.nameplate %>"<% if (!user.allowedManage) { %> readonly<% } %>>
</div>

然后在 modules/user.js 中加入修改的代码：

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 if (res.locals.user && await res.locals.user.hasPrivilege('manage_user')) {
   if (!syzoj.utils.isValidUsername(req.body.username)) throw new ErrorMessage('无效的用户名。');
   user.username = req.body.username;
   user.email = req.body.email;
+  user.nameplate = req.body.nameplate;
 }

为了让显示效果更美观，在 static/self/custom.css 中加一个样式：

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.user-nameplate {
  font-size: 6px;
}

最后在所有 ejs 文件中，将显示 nameplate 的代码改一下：

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<span class="user-gray user-nameplate"><%= xxx.nameplate %></span>

姓名就会在用户名的后面显示为灰色小字。

改 views/sign_up.ejs 的时候还发现了这样一段代码：

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alert("注册确认邮件已经发送到您的邮箱的垃圾箱，点击邮件内的链接即可完成注册。");

（………………？）

用户 Tag

在数据库中，每个用户有一个 nickname 属性，但在代码中没有关于 nickname 的任何操作，所以就直接用 nickname 储存 tag。

首先要在修改个人信息的页面加一个输入框，那么往 views/user_edit.ejs 里添加代码：

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<% if (edited_user.nickname || user.is_admin) { %>
<div class="field">
  <label for="nickname">Tag</label>
  <input type="text" id="nickname" name="nickname" value="<%= edited_user.nickname %>"<% if (!user.is_admin) { %> readonly<% } %>>
</div>
<% } %>

然后在 modules/user.js 中加入修改的代码：

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 if (res.locals.user && res.locals.user.is_admin) {
+  user.nickname = req.body.nickname;
   if (!req.body.privileges) {
     req.body.privileges = [];
   } else if (!Array.isArray(req.body.privileges)) {

之后在 static/self/custom.css 中添加显示效果：

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.bg-gray {
  background-color: rgb(191, 191, 191) !important;
}
.bg-blue {
  background-color: rgb(52, 152, 219) !important;
}
.bg-green {
  background-color: rgb(82, 196, 26) !important;
}
.bg-orange {
  background-color: rgb(243, 156, 17) !important;
}
.bg-red {
  background-color: rgb(254, 76, 97) !important;
}
.bg-purple {
  background-color: rgb(157, 61, 207) !important;
}

.user-tag {
  border-radius: 3px;
  display: inline-block;
  padding: .3em .5em;
  font-weight: 700;
  color: #fff;
  line-height: 1;
  font-size: 11px;
  margin: .2em;
}

最后修改所有 ejs 文件，在 username 和 nameplate 之间加入显示 tag 的代码：

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<% if (xxx.nickname) { %><span class="user-tag bg-<%= syzoj.utils.makeUserColor(xxx.rating, xxx.is_admin) %>"><%- xxx.nickname %></span><% } %>

结果发现需要显示的内容太长，在有些位置显示时被拆成了两行，所以再修改一下有问题的位置。

views/index.ejs：

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-<th style="width: 170px; ">用户名</th>
+<th style="width: 200px; ">用户名</th>

views/discussion.ejs：

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-<th style="width: 10%; ">作者</th>
+<th style="width: 25%; ">作者</th>

（感谢 potatoler 用一晚上的时间为 OJ 画的 logo）

在 views/header.ejs 中添加 <link rel="icon" href="xxx" type="image/x-icon">，用于设置网页标题旁的 logo。

在这个文件中添加 <img src="xxx" style="width: 32px; height: 32px; margin-right: 16px;">，用于设置顶栏上的 logo。

讨论修改权限

SYZOJ 的讨论区中，发帖人和全站管理员可以修改帖子。

感觉这个设定不太合适，决定去掉发帖人修改帖子的权限，再添加一个“管理社区”权限，可以修改所有讨论。

首先在 views/user_edit.ejs 中加入“管理社区”的选项：

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<div class="ui toggle <% if (!allowedManagePrivilege) { %>disabled <% } %>checkbox checkbox_privilege" data-name="manage_community">
  <input <% if (!allowedManagePrivilege) { %>disabled="disabled" <% } %>type="checkbox"<% if (edited_user.privileges.includes('manage_community')) { %> checked<% } %>>
  <label>管理社区</label>
</div>

然后在 modules/discussion.js 中将 await article.isAllowedEditBy(res.locals.user) 改为 res.locals.user.is_admin || await res.locals.user.hasPrivilege('manage_community')。

回复删除权限

同样还是去掉回复人删除回复的权限，再让“管理社区”权限可以删除回复。

在 modules/discussion.js 中将 await comment.isAllowedEditBy(res.locals.user) 改为 res.locals.user.is_admin || await res.locals.user.hasPrivilege('manage_community')。

Testlib

SYZOJ 不支持用 Testlib 写的 spj，为了加上这个功能，本来想着再魔改一下，但发现已经有改好的版本在 pastebin 上，直接放到 /opt/syzoj/sandbox/rootfs/usr/include/ 即可。

结果突然发现这个 Testlib 还有锅……不能处理 Partially Correct 的情况……

在这个 Testlib 中找到这句：

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std::string stringPoints = removeDoubleTrailingZeroes(format("%.10f", __testlib_points));

改为

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std::string stringPoints = format("%d", (int)(__testlib_points * 100));

另外这个 Testlib 还不支持交互器，找到 registerInteraction 函数改为这样即可：

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void registerInteraction (int argc, char* argv[]) {
    __testlib_ensuresPreconditions ();
    testlibMode = _interactor;
    __testlib_set_binary (stdin);
    inf.init ("input", _input);
    ouf.init (stdin, _output);
    resultName = "";
    appesMode = false;
}

注册审核功能

因为是校内 OJ，所以要加入注册审核功能，注册信息必须通过审核才可以使用 OJ。

但是当 OJ 还没有用户时，就无法注册用户，因为还没有管理员审核。

于是直接将注册审核捆绑到邮箱验证上，当邮箱验证关闭时也同时关闭注册审核。（反正都是用于验证的）

（好然后又写了很多不可维护代码

考虑在注册账号后将注册信息存入数据库，然后邮件通知管理员审核。

但这样又太麻烦，当有一个用户注册时就必须遍历一遍当前的所有用户，然后再判断是否为管理员。

于是改成当管理员登录 OJ 时查询数据库，将待审核用户显示在主页上。

这个功能因为 （似乎） 比较复杂，所以我负责后端，前端主要由 potatoler 编写。

首先就需要一个用于存待审核用户的表，新建 models/pending_user.ts 文件并写入以下内容：

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import * as TypeORM from "typeorm";
import Model from "./common";

@TypeORM.Entity()
export default class PendingUser extends Model {
  @TypeORM.Index()
  @TypeORM.PrimaryColumn({type: "varchar", length: 80 })
  username: string;

  @TypeORM.Column({type: "varchar", length: 120 })
  password: string;

  @TypeORM.Column({type: "text" })
  nameplate: string;

  @TypeORM.Column({type: "integer" })
  sex: number;

  @TypeORM.Column({type: "varchar", length: 120 })
  email: string;
}

另外还需要一个显示信息的页面，新建 views/info.ejs 并写入以下内容：

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<% this.title = '信息' %>
<% include header %>

<div class="ui info icon message">
  <i class="info icon"></i>
  <div class="header">
    <%= info %>
  </div>
</div>

<% include footer %>

然后修改注册时的操作，在 modules/api.js 的开头加入 let PendingUser = syzoj.model('pending_user');，用于操作数据库中的待审核用户。

然后找到 app.get('/api/sign_up_confirm', async (req, res) => {，去掉新建用户的操作，改为向待审核用户中添加：

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user = await PendingUser.create({
  username: obj.username,
  password: obj.password,
  nameplate: obj.nameplate,
  sex: obj.sex,
  email: obj.email
});
await user.save();

res.render('info', {
  info: '请等待管理员审核。'
});

另外还需要处理前端向 /api/allow_user/:username 和 /api/block_user/:username 发送的 post 请求，表示审核状态：

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app.post('/api/allow_user/:username', async (req, res) => {
  try {
    if (!res.locals.user) throw new ErrorMessage('请登录后继续。', { '登录': syzoj.utils.makeUrl(['login'], { 'url': req.originalUrl }) });
    let allowed = await res.locals.user.hasPrivilege('manage_user');
    if (!allowed) throw new ErrorMessage('您没有权限进行此操作。');

    let pending_user = await PendingUser.findOne ({
      where: {
        username: req.params.username
      }
    });
    if (!pending_user) throw new ErrorMessage('无此用户。');
    let user = await User.fromName(req.params.username);
    if (user) throw new ErrorMessage('用户名已被占用。');
    user = await User.findOne({ where: { email: pending_user.email } });
    if (user) throw new ErrorMessage('邮件地址已被占用。');

    user = await User.create({
      username: pending_user.username,
      password: pending_user.password,
      nameplate: pending_user.nameplate,
      sex: pending_user.sex,
      email: pending_user.email,
      is_show: syzoj.config.default.user.show,
      rating: syzoj.config.default.user.rating,
      register_time: parseInt((new Date()).getTime() / 1000)
    });
    await user.save();

    try {
      await Email.send(pending_user.email,
        `${pending_user.username} 的 ${syzoj.config.title} 注册审核通知`,
        `<p>您在 ${syzoj.config.title} 的注册已通过审核。</p>`
      );
    } catch (e) {}

    await pending_user.destroy();

  } catch (e) {
    syzoj.log(e);
    res.send(e);
  }
});

app.post('/api/block_user/:username', async (req, res) => {
  try {
    if (!res.locals.user) throw new ErrorMessage('请登录后继续。', { '登录': syzoj.utils.makeUrl(['login'], { 'url': req.originalUrl }) });
    let allowed = await res.locals.user.hasPrivilege('manage_user');
    if (!allowed) throw new ErrorMessage('您没有权限进行此操作。');

    let pending_user = await PendingUser.findOne ({
      where: {
        username: req.params.username
      }
    });
    if (!pending_user) throw new ErrorMessage('无此用户。');

    try {
      await Email.send(pending_user.email,
        `${pending_user.username} 的 ${syzoj.config.title} 注册审核通知`,
        `<p>您在 ${syzoj.config.title} 的注册已被拒绝。</p>`
      );
    } catch (e) {}

    await pending_user.destroy();

  } catch (e) {
    syzoj.log(e);
    res.send(e);
  }
});

最后修改 modules/index.js，向前端传递权限信息和待审核用户。

先在开头加入 let PendingUser = syzoj.model('pending_user');，然后找到 app.get('/', async (req, res) => {，修改其中加载页面的位置：

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+let pending_user = await PendingUser.find ();

 res.render('index', {
   ranklist: ranklist,
   notices: notices,
   fortune: fortune,
   contests: contests,
   problems: problems,
   links: syzoj.config.links,
-  is_logined: !!res.locals.user
+  is_logined: !!res.locals.user,
+  allowedManage: res.locals.user && await res.locals.user.hasPrivilege('manage_user'),
+  pending_user: pending_user
 });

对于前端部分，首先在 views/index.ejs 找到侧边栏，然后加入以下代码：

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<% if (is_logined && allowedManage && pending_user && pending_user.length) { %>
  <h4 class="ui top attached block header"><i class="user icon"></i>待审核用户</h4>
  <div class="ui bottom attached segment">
    <table class="ui very basic center aligned table" style="table-layout: fixed; ">
      <tbody>
        <%
        for (let i = 0; i < pending_user.length; i++) {
          let user = pending_user[i];
        %>
          <tr id = "pending_<%= user.username %>">
            <td style="text-align:left;"><span class="user-name user-blue"><%= user.username %></span><span class="user-gray user-nameplate"><%= user.nameplate %></span></td>
            <td style="width: 90px;">
              <a style="width: 35px; padding-right: 5px; padding-left: 5px; padding-top: 5px; padding-bottom: 5px" class="ui mini green right button" onclick=userAllow("<%= user.username %>")>
                通过
              </a>
              <a style="width: 35px; padding-right: 5px; padding-left: 5px; padding-top: 5px; padding-bottom: 5px" class="ui mini gray right button" onclick=userBlock("<%= user.username %>")>
                忽略
              </a>
            </td>
          </tr>
        <% } %>
      </tbody>
    </table>
  </div>
<% } %>

然后在 script 部分加入点击按钮时的操作：

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function userAllow (username) {
  $.ajax({
    url: '/api/allow_user/' + username,
    type: 'POST',
    async: true
  });
  let nod = document.getElementById ("pending_" + username);
  let par = nod.parentNode;
  par.removeChild (nod);
  if (!par.childElementCount) {
    par.parentNode.removeChild (par);
  }
}
function userBlock (username) {
  $.ajax({
    url: '/api/block_user/' + username,
    type: 'POST',
    async: true
  });
  let nod = document.getElementById ("pending_" + username);
  let par = nod.parentNode;
  par.removeChild (nod);
  if (!par.childElementCount) {
    par.parentNode.removeChild (par);
  }
}

另外，在注册页面加上一个提示信息：

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<label for="nameplate">真实姓名<span style="color: red; font-weight: 500;">真实姓名填写错误会影响管理员对该账号的审核</span></label>

最后，因为修改了 ts 文件，所以需要执行 yarn 重新编译才会使修改生效。

NOIp 倒计时

在主页的侧边栏加一个 NOIp 倒计时的功能，再加上一个圆环形的类似进度条的东西，根据剩余时间改变颜色。

本来是用 css 做了很久，最后发现还是 svg 最方便。

首先显示一个灰色的圆环，然后再显示一个半径相同、宽度相同的环形虚线，设置虚线的间隔为大于环长的值，那么就可以显示出指定长度的圆弧。

在 views/index.ejs 中加入以下代码：

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<h4 class="ui top attached block header"><i class="ui clock icon" style="display: inline-block; margin-right: .75rem;"></i>距离 <span style="color: <%= noip_color %>">NOIp<%= noip_year %></span> 还有</h4>
<div class="ui bottom attached center aligned segment">
  <svg width="140" height="140" viewBox="0 0 140 140">
    <circle cx="70" cy="70" r="65" stroke-width="10" stroke="#E5E5E5" fill="none"></circle>
    <circle cx="70" cy="70" r="65" stroke-width="10" stroke="<%= noip_color %>" fill="none" transform="matrix(0, -1, 1, 0, 0, 140)" stroke-dasharray="<%= noip_arc %> 409"></circle>
    <text style="dominant-baseline:middle;text-anchor:middle;font-size: 30px;font-weight: 800; fill: <%= noip_color %>" y="70" x="70"><%= noip_day %>天</text>
  </svg>
</div>

然后在 modules/index.js 中加入以下内容：

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let getNOIpDay = function (year) {
  let fg = 0;
  let d;
  for (let i = 1; i <= 14; ++i) {
    d = new Date (year, 10, i);
    if (d.getDay () == 6) {
      if (fg) {
        return d;
      }
      else {
        fg = 1;
      }
    }
  }
}
let year = new Date ().getFullYear ();
let day = parseInt ((getNOIpDay (year) - new Date ()) / (1000 * 60 * 60 * 24));
if (day == -1) {
  day = 0;
}
else if (day < -1) {
  ++year;
  day = parseInt ((getNOIpDay (year) - new Date ()) / (1000 * 60 * 60 * 24));
}

let noip_color;
if (day <= 91) {
  noip_color = "#e74c3c";
}
else if (day <= 182) {
  noip_color = "#e67e22";
}
else if (day <= 273) {
  noip_color = "#f1c40f";
}
else {
  noip_color = "#2dce89";
}

然后再将数据传给前端：

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 res.render('index', {
   ranklist: ranklist,
   notices: notices,
   fortune: fortune,
   contests: contests,
   problems: problems,
   links: syzoj.config.links,
   is_logined: !!res.locals.user,
   allowedManage: res.locals.user && res.locals.user.hasPrivilege('manage_user'),
-  pending_user: pending_user
+  pending_user: pending_user,
+  noip_year: year,
+  noip_day: day,
+  noip_color: noip_color,
+  noip_arc: day / 365 * 409
 });

就可以实现这样的效果：

比赛界面

因为在比赛界面中点击排行榜会跳到另一个页面，看不到原来的比赛信息，所以决定修改一下，同时也改了改其他部分。

modules/contest.js：

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let Contest = syzoj.model('contest');
let ContestRanklist = syzoj.model('contest_ranklist');
let ContestPlayer = syzoj.model('contest_player');
let Problem = syzoj.model('problem');
let JudgeState = syzoj.model('judge_state');
let User = syzoj.model('user');

const jwt = require('jsonwebtoken');
const { getSubmissionInfo, getRoughResult, processOverallResult } = require('../libs/submissions_process');

app.get('/contests', async (req, res) => {
  try {
    if (!res.locals.user) throw new ErrorMessage('请登录后继续。', { '登录': syzoj.utils.makeUrl(['login'], { 'url': req.originalUrl }) });
    let where;
    if (res.locals.user && res.locals.user.is_admin) where = {}
    else where = { is_public: true };

    let paginate = syzoj.utils.paginate(await Contest.countForPagination(where), req.query.page, syzoj.config.page.contest);
    let contests = await Contest.queryPage(paginate, where, {
      start_time: 'DESC'
    });

    await contests.forEachAsync(async x => x.subtitle = await syzoj.utils.markdown(x.subtitle));

    res.render('contests', {
      contests: contests,
      paginate: paginate
    })
  } catch (e) {
    syzoj.log(e);
    res.render('error', {
      err: e
    });
  }
});

app.get('/contest/:id/edit', async (req, res) => {
  try {
    if (!res.locals.user) throw new ErrorMessage('请登录后继续。', { '登录': syzoj.utils.makeUrl(['login'], { 'url': req.originalUrl }) });
    if (!res.locals.user || !res.locals.user.is_admin) throw new ErrorMessage('您没有权限进行此操作。');

    let contest_id = parseInt(req.params.id);
    let contest = await Contest.findById(contest_id);
    if (!contest) {
      contest = await Contest.create();
      contest.id = 0;
    } else {
      await contest.loadRelationships();
    }

    let problems = [], admins = [];
    if (contest.problems) problems = await contest.problems.split('|').mapAsync(async id => await Problem.findById(id));
    if (contest.admins) admins = await contest.admins.split('|').mapAsync(async id => await User.findById(id));

    res.render('contest_edit', {
      contest: contest,
      problems: problems,
      admins: admins
    });
  } catch (e) {
    syzoj.log(e);
    res.render('error', {
      err: e
    });
  }
});

app.post('/contest/:id/edit', async (req, res) => {
  try {
    if (!res.locals.user) throw new ErrorMessage('请登录后继续。', { '登录': syzoj.utils.makeUrl(['login'], { 'url': req.originalUrl }) });
    if (!res.locals.user || !res.locals.user.is_admin) throw new ErrorMessage('您没有权限进行此操作。');

    let contest_id = parseInt(req.params.id);
    let contest = await Contest.findById(contest_id);
    let ranklist = null;
    if (!contest) {
      contest = await Contest.create();

      contest.holder_id = res.locals.user.id;

      ranklist = await ContestRanklist.create();
    } else {
      await contest.loadRelationships();
      ranklist = contest.ranklist;
    }

    if (!['NOI', 'IOI', 'ACM'].includes(req.body.type)) throw new ErrorMessage('无效的赛制。');
    contest.type = req.body.type;

    try {
      ranklist.ranking_params = JSON.parse(req.body.ranking_params);
    } catch (e) {
      ranklist.ranking_params = {};
    }
    await ranklist.save();
    contest.ranklist_id = ranklist.id;

    if (!req.body.title.trim()) throw new ErrorMessage('比赛名不能为空。');
    contest.title = req.body.title;
    contest.subtitle = req.body.subtitle;
    if (!Array.isArray(req.body.problems)) req.body.problems = [req.body.problems];
    if (!Array.isArray(req.body.admins)) req.body.admins = [req.body.admins];
    contest.problems = req.body.problems.join('|');
    contest.admins = req.body.admins.join('|');
    contest.information = req.body.information;
    contest.start_time = syzoj.utils.parseDate(req.body.start_time);
    contest.end_time = syzoj.utils.parseDate(req.body.end_time);
    contest.is_public = req.body.is_public === 'on';
    contest.hide_statistics = req.body.hide_statistics === 'on';

    await contest.save();

    res.redirect(syzoj.utils.makeUrl(['contest', contest.id]));
  } catch (e) {
    syzoj.log(e);
    res.render('error', {
      err: e
    });
  }
});

app.get('/contest/:id', async (req, res) => {
  try {
    if (!res.locals.user) throw new ErrorMessage('请登录后继续。', { '登录': syzoj.utils.makeUrl(['login'], { 'url': req.originalUrl }) });
    const curUser = res.locals.user;
    let contest_id = parseInt(req.params.id);

    let contest = await Contest.findById(contest_id);
    if (!contest) throw new ErrorMessage('无此比赛。');
    if (!contest.is_public && (!res.locals.user || !res.locals.user.is_admin)) throw new ErrorMessage('比赛未公开，请耐心等待 (´∀ `)');

    const isSupervisior = await contest.isSupervisior(curUser);
    contest.running = contest.isRunning();
    contest.ended = contest.isEnded();
    contest.subtitle = await syzoj.utils.markdown(contest.subtitle);
    contest.information = await syzoj.utils.markdown(contest.information);

    let hasStatistics = false;
    if ((!contest.hide_statistics) || (contest.ended) || (isSupervisior)) {
      hasStatistics = true;
    }

    res.render('contest', {
      contest: contest,
      hasStatistics: hasStatistics,
      isSupervisior: isSupervisior
    });
  } catch (e) {
    syzoj.log(e);
    res.render('error', {
      err: e
    });
  }
});

app.get('/contest/:id/problem', async (req, res) => {
  try {
    if (!res.locals.user) throw new ErrorMessage('请登录后继续。', { '登录': syzoj.utils.makeUrl(['login'], { 'url': req.originalUrl }) });
    const curUser = res.locals.user;
    let contest_id = parseInt(req.params.id);

    let contest = await Contest.findById(contest_id);
    if (!contest) throw new ErrorMessage('无此比赛。');
    if (!contest.is_public && (!res.locals.user || !res.locals.user.is_admin)) throw new ErrorMessage('比赛未公开，请耐心等待 (´∀ `)');

    const isSupervisior = await contest.isSupervisior(curUser);
    contest.running = contest.isRunning();
    contest.ended = contest.isEnded();
    contest.subtitle = await syzoj.utils.markdown(contest.subtitle);

    if (!contest.running && !contest.ended && (!res.locals.user || !res.locals.user.is_admin)) throw new ErrorMessage('比赛未开始，请耐心等待 (´∀ `)');

    let problems_id = await contest.getProblems();
    let problems = await problems_id.mapAsync(async id => await Problem.findById(id));

    let player = null;

    if (res.locals.user) {
      player = await ContestPlayer.findInContest({
        contest_id: contest.id,
        user_id: res.locals.user.id
      });
    }

    problems = problems.map(x => ({ problem: x, status: null, judge_id: null, statistics: null }));
    if (player) {
      for (let problem of problems) {
        if (contest.type === 'NOI') {
          if (player.score_details[problem.problem.id]) {
            let judge_state = await JudgeState.findById(player.score_details[problem.problem.id].judge_id);
            problem.status = judge_state.status;
            if (!contest.ended && !await problem.problem.isAllowedEditBy(res.locals.user) && !['Compile Error', 'Waiting', 'Compiling'].includes(problem.status)) {
              problem.status = 'Submitted';
            }
            problem.judge_id = player.score_details[problem.problem.id].judge_id;
          }
        } else if (contest.type === 'IOI') {
          if (player.score_details[problem.problem.id]) {
            let judge_state = await JudgeState.findById(player.score_details[problem.problem.id].judge_id);
            problem.status = judge_state.status;
            problem.judge_id = player.score_details[problem.problem.id].judge_id;
            await contest.loadRelationships();
            let multiplier = contest.ranklist.ranking_params[problem.problem.id] || 1.0;
            problem.feedback = (judge_state.score * multiplier).toString() + ' / ' + (100 * multiplier).toString();
          }
        } else if (contest.type === 'ACM') {
          if (player.score_details[problem.problem.id]) {
            problem.status = {
              accepted: player.score_details[problem.problem.id].accepted,
              unacceptedCount: player.score_details[problem.problem.id].unacceptedCount
            };
            problem.judge_id = player.score_details[problem.problem.id].judge_id;
          } else {
            problem.status = null;
          }
        }
      }
    }

    let hasStatistics = false;
    if ((!contest.hide_statistics) || (contest.ended) || (isSupervisior)) {
      hasStatistics = true;

      await contest.loadRelationships();
      let players = await contest.ranklist.getPlayers();
      for (let problem of problems) {
        problem.statistics = { attempt: 0, accepted: 0 };

        if (contest.type === 'IOI' || contest.type === 'NOI') {
          problem.statistics.partially = 0;
        }

        for (let player of players) {
          if (player.score_details[problem.problem.id]) {
            problem.statistics.attempt++;
            if ((contest.type === 'ACM' && player.score_details[problem.problem.id].accepted) || ((contest.type === 'NOI' || contest.type === 'IOI') && player.score_details[problem.problem.id].score === 100)) {
              problem.statistics.accepted++;
            }

            if ((contest.type === 'NOI' || contest.type === 'IOI') && player.score_details[problem.problem.id].score > 0) {
              problem.statistics.partially++;
            }
          }
        }
      }
    }

    res.render('contest_problem', {
      contest: contest,
      problems: problems,
      hasStatistics: hasStatistics,
      isSupervisior: isSupervisior
    });
  } catch (e) {
    syzoj.log(e);
    res.render('error', {
      err: e
    });
  }
});

app.get('/contest/:id/ranklist', async (req, res) => {
  try {
    if (!res.locals.user) throw new ErrorMessage('请登录后继续。', { '登录': syzoj.utils.makeUrl(['login'], { 'url': req.originalUrl }) });
    let contest_id = parseInt(req.params.id);
    let contest = await Contest.findById(contest_id);
    const curUser = res.locals.user;

    if (!contest) throw new ErrorMessage('无此比赛。');
    if (!contest.is_public && (!res.locals.user || !res.locals.user.is_admin)) throw new ErrorMessage('比赛未公开，请耐心等待 (´∀ `)');
    if ([contest.allowedSeeingResult() && contest.allowedSeeingOthers(),
    contest.isEnded(),
    await contest.isSupervisior(curUser)].every(x => !x))
      throw new ErrorMessage('您没有权限进行此操作。');

    const isSupervisior = await contest.isSupervisior(curUser);
    contest.ended = contest.isEnded();

    await contest.loadRelationships();

    let players_id = [];
    for (let i = 1; i <= contest.ranklist.ranklist.player_num; i++) players_id.push(contest.ranklist.ranklist[i]);

    let ranklist = await players_id.mapAsync(async player_id => {
      let player = await ContestPlayer.findById(player_id);

      if (contest.type === 'NOI' || contest.type === 'IOI') {
        player.score = 0;
      }

      for (let i in player.score_details) {
        player.score_details[i].judge_state = await JudgeState.findById(player.score_details[i].judge_id);

        /*** XXX: Clumsy duplication, see ContestRanklist::updatePlayer() ***/
        if (contest.type === 'NOI' || contest.type === 'IOI') {
          let multiplier = (contest.ranklist.ranking_params || {})[i] || 1.0;
          player.score_details[i].weighted_score = player.score_details[i].score == null ? null : Math.round(player.score_details[i].score * multiplier);
          player.score += player.score_details[i].weighted_score;
        }
      }

      let user = await User.findById(player.user_id);

      return {
        user: user,
        player: player
      };
    });

    let problems_id = await contest.getProblems();
    let problems = await problems_id.mapAsync(async id => await Problem.findById(id));

    res.render('contest_ranklist', {
      contest: contest,
      ranklist: ranklist,
      problems: problems,
      isSupervisior: isSupervisior
    });
  } catch (e) {
    syzoj.log(e);
    res.render('error', {
      err: e
    });
  }
});

function getDisplayConfig(contest) {
  return {
    showScore: contest.allowedSeeingScore(),
    showUsage: false,
    showCode: false,
    showResult: contest.allowedSeeingResult(),
    showOthers: contest.allowedSeeingOthers(),
    showDetailResult: contest.allowedSeeingTestcase(),
    showTestdata: false,
    inContest: true,
    showRejudge: false
  };
}

app.get('/contest/:id/submissions', async (req, res) => {
  try {
    if (!res.locals.user) throw new ErrorMessage('请登录后继续。', { '登录': syzoj.utils.makeUrl(['login'], { 'url': req.originalUrl }) });
    let contest_id = parseInt(req.params.id);
    let contest = await Contest.findById(contest_id);
    if (!contest.is_public && (!res.locals.user || !res.locals.user.is_admin)) throw new ErrorMessage('比赛未公开，请耐心等待 (´∀ `)');

    const displayConfig = getDisplayConfig(contest);
    let problems_id = await contest.getProblems();
    const curUser = res.locals.user;
    const isSupervisior = await contest.isSupervisior(curUser);

    if (contest.isEnded() || (curUser && await contest.isSupervisior(curUser))) {
      res.redirect(syzoj.utils.makeUrl(['submissions'], { contest: contest_id }));
      return;
    }

    let user = req.query.submitter && await User.fromName(req.query.submitter);

    let query = JudgeState.createQueryBuilder();

    let isFiltered = false;
    if (displayConfig.showOthers) {
      if (user) {
        query.andWhere('user_id = :user_id', { user_id: user.id });
        isFiltered = true;
      }
    } else {
      if (curUser == null || // Not logined
        (user && user.id !== curUser.id)) { // Not querying himself
        throw new ErrorMessage("您没有权限执行此操作。");
      }
      query.andWhere('user_id = :user_id', { user_id: curUser.id });
      isFiltered = true;
    }

    if (displayConfig.showScore) {
      let minScore = parseInt(req.body.min_score);
      if (!isNaN(minScore)) query.andWhere('score >= :minScore', { minScore });
      let maxScore = parseInt(req.body.max_score);
      if (!isNaN(maxScore)) query.andWhere('score <= :maxScore', { maxScore });

      if (!isNaN(minScore) || !isNaN(maxScore)) isFiltered = true;
    }

    if (req.query.language) {
      if (req.body.language === 'submit-answer') {
        query.andWhere(new TypeORM.Brackets(qb => {
          qb.orWhere('language = :language', { language: '' })
            .orWhere('language IS NULL');
        }));
      } else if (req.body.language === 'non-submit-answer') {
        query.andWhere('language != :language', { language: '' })
             .andWhere('language IS NOT NULL');
      } else {
        query.andWhere('language = :language', { language: req.body.language })
      }
      isFiltered = true;
    }

    if (displayConfig.showResult) {
      if (req.query.status) {
        query.andWhere('status = :status', { status: req.query.status });
        isFiltered = true;
      }
    }

    if (req.query.problem_id) {
      problem_id = problems_id[parseInt(req.query.problem_id) - 1] || 0;
      query.andWhere('problem_id = :problem_id', { problem_id })
      isFiltered = true;
    }

    query.andWhere('type = 1')
         .andWhere('type_info = :contest_id', { contest_id });

    let judge_state, paginate;

    if (syzoj.config.submissions_page_fast_pagination) {
      const queryResult = await JudgeState.queryPageFast(query, syzoj.utils.paginateFast(
        req.query.currPageTop, req.query.currPageBottom, syzoj.config.page.judge_state
      ), -1, parseInt(req.query.page));

      judge_state = queryResult.data;
      paginate = queryResult.meta;
    } else {
      paginate = syzoj.utils.paginate(
        await JudgeState.countQuery(query),
        req.query.page,
        syzoj.config.page.judge_state
      );
      judge_state = await JudgeState.queryPage(paginate, query, { id: "DESC" }, true);
    }

    await judge_state.forEachAsync(async obj => {
      await obj.loadRelationships();
      obj.problem_id = problems_id.indexOf(obj.problem_id) + 1;
      obj.problem.title = syzoj.utils.removeTitleTag(obj.problem.title);
    });

    const pushType = displayConfig.showResult ? 'rough' : 'compile';
    res.render('submissions', {
      contest: contest,
      isSupervisior: isSupervisior,
      items: judge_state.map(x => ({
        info: getSubmissionInfo(x, displayConfig),
        token: (getRoughResult(x, displayConfig) == null && x.task_id != null) ? jwt.sign({
          taskId: x.task_id,
          type: pushType,
          displayConfig: displayConfig
        }, syzoj.config.session_secret) : null,
        result: getRoughResult(x, displayConfig),
        running: false,
      })),
      paginate: paginate,
      form: req.query,
      displayConfig: displayConfig,
      pushType: pushType,
      isFiltered: isFiltered,
      fast_pagination: syzoj.config.submissions_page_fast_pagination
    });
  } catch (e) {
    syzoj.log(e);
    res.render('error', {
      err: e
    });
  }
});


app.get('/contest/submission/:id', async (req, res) => {
  try {
    if (!res.locals.user) throw new ErrorMessage('请登录后继续。', { '登录': syzoj.utils.makeUrl(['login'], { 'url': req.originalUrl }) });
    const id = parseInt(req.params.id);
    const judge = await JudgeState.findById(id);
    if (!judge) throw new ErrorMessage("提交记录 ID 不正确。");
    const curUser = res.locals.user;
    if ((!curUser) || judge.user_id !== curUser.id) throw new ErrorMessage("您没有权限执行此操作。");

    if (judge.type !== 1) {
      return res.redirect(syzoj.utils.makeUrl(['submission', id]));
    }

    const contest = await Contest.findById(judge.type_info);
    contest.ended = contest.isEnded();

    const displayConfig = getDisplayConfig(contest);
    displayConfig.showCode = true;

    await judge.loadRelationships();
    const problems_id = await contest.getProblems();
    judge.problem_id = problems_id.indexOf(judge.problem_id) + 1;
    judge.problem.title = syzoj.utils.removeTitleTag(judge.problem.title);

    if (judge.problem.type !== 'submit-answer') {
      judge.codeLength = Buffer.from(judge.code).length;
      judge.code = await syzoj.utils.highlight(judge.code, syzoj.languages[judge.language].highlight);
    }

    res.render('submission', {
      info: getSubmissionInfo(judge, displayConfig),
      roughResult: getRoughResult(judge, displayConfig),
      code: (displayConfig.showCode && judge.problem.type !== 'submit-answer') ? judge.code.toString("utf8") : '',
      formattedCode: judge.formattedCode ? judge.formattedCode.toString("utf8") : null,
      preferFormattedCode: res.locals.user ? res.locals.user.prefer_formatted_code : false,
      detailResult: processOverallResult(judge.result, displayConfig),
      socketToken: (displayConfig.showDetailResult && judge.pending && judge.task_id != null) ? jwt.sign({
        taskId: judge.task_id,
        displayConfig: displayConfig,
        type: 'detail'
      }, syzoj.config.session_secret) : null,
      displayConfig: displayConfig,
      contest: contest,
    });
  } catch (e) {
    syzoj.log(e);
    res.render('error', {
      err: e
    });
  }
});

app.get('/contest/:id/problem/:pid', async (req, res) => {
  try {
    if (!res.locals.user) throw new ErrorMessage('请登录后继续。', { '登录': syzoj.utils.makeUrl(['login'], { 'url': req.originalUrl }) });
    let contest_id = parseInt(req.params.id);
    let contest = await Contest.findById(contest_id);
    if (!contest) throw new ErrorMessage('无此比赛。');
    const curUser = res.locals.user;

    let problems_id = await contest.getProblems();

    let pid = parseInt(req.params.pid);
    if (!pid || pid < 1 || pid > problems_id.length) throw new ErrorMessage('无此题目。');

    let problem_id = problems_id[pid - 1];
    let problem = await Problem.findById(problem_id);
    await problem.loadRelationships();

    contest.ended = contest.isEnded();
    if (!await contest.isSupervisior(curUser) && !(contest.isRunning() || contest.isEnded())) {
      if (await problem.isAllowedUseBy(res.locals.user)) {
        return res.redirect(syzoj.utils.makeUrl(['problem', problem_id]));
      }
      throw new ErrorMessage('比赛尚未开始。');
    }

    problem.specialJudge = await problem.hasSpecialJudge();

    await syzoj.utils.markdown(problem, ['description', 'input_format', 'output_format', 'example', 'limit_and_hint']);

    let state = await problem.getJudgeState(res.locals.user, false);
    let testcases = await syzoj.utils.parseTestdata(problem.getTestdataPath(), problem.type === 'submit-answer');

    await problem.loadRelationships();

    res.render('problem', {
      pid: pid,
      contest: contest,
      problem: problem,
      state: state,
      lastLanguage: res.locals.user ? await res.locals.user.getLastSubmitLanguage() : null,
      testcases: testcases
    });
  } catch (e) {
    syzoj.log(e);
    res.render('error', {
      err: e
    });
  }
});

app.get('/contest/:id/:pid/download/additional_file', async (req, res) => {
  try {
    if (!res.locals.user) throw new ErrorMessage('请登录后继续。', { '登录': syzoj.utils.makeUrl(['login'], { 'url': req.originalUrl }) });
    let id = parseInt(req.params.id);
    let contest = await Contest.findById(id);
    if (!contest) throw new ErrorMessage('无此比赛。');

    let problems_id = await contest.getProblems();

    let pid = parseInt(req.params.pid);
    if (!pid || pid < 1 || pid > problems_id.length) throw new ErrorMessage('无此题目。');

    let problem_id = problems_id[pid - 1];
    let problem = await Problem.findById(problem_id);

    contest.ended = contest.isEnded();
    if (!(contest.isRunning() || contest.isEnded())) {
      if (await problem.isAllowedUseBy(res.locals.user)) {
        return res.redirect(syzoj.utils.makeUrl(['problem', problem_id, 'download', 'additional_file']));
      }
      throw new ErrorMessage('比赛尚未开始。');
    }

    await problem.loadRelationships();

    if (!problem.additional_file) throw new ErrorMessage('无附加文件。');

    res.download(problem.additional_file.getPath(), `additional_file_${id}_${pid}.zip`);
  } catch (e) {
    syzoj.log(e);
    res.status(404);
    res.render('error', {
      err: e
    });
  }
});

views/contests.ejs：

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<% this.title = '比赛' %>
<% include header %>
<div class="padding">
    <% if (contests.length) { %>
    <% if (user && user.is_admin) { %>
    <form class="ui mini form">
      <div class="inline fields" style="margin-bottom: 25px; white-space: nowrap; ">
        <a href="<%= syzoj.utils.makeUrl(['contest', 0, 'edit']) %>" class="ui mini labeled icon right floated button" style="margin-left: auto; ">
          <i class="ui icon write"></i>
          添加比赛
        </a>
     </div>
    </form>
    <% } %>
    <table class="ui very basic center aligned table">
      <thead>
        <tr>
          <th><span style="float:left; margin-left: 20px;">比赛名称</span></th>
          <th style="width: 170px;">开始时间</th>
          <th style="width: 170px;">结束时间</th>
          <th>描述</th>
          <th style="width: 75px;">赛制</th>
        </tr>
      </thead>
      <tbody>
        <%
        for (let contest of contests) {
          let now = syzoj.utils.getCurrentDate();
          let tag = '';
        %>
        <tr>
          <% if (now < contest.start_time) { %>
            <% tag = '<span class="ui header"><div class="ui mini red label">未开始</div></span>' %>
          <% } else if (now >= contest.start_time && now < contest.end_time) { %>
            <% tag = '<span class="ui header"><div class="ui mini green label">进行中</div></span>' %>
          <% } else { %>
            <% tag = '<span class="ui header"><div class="ui mini grey label">已结束</div></span>' %>
          <% } %>
          <% if (!contest.is_public) { %>
            <% tag += '<span class="ui header"><div class="ui tiny red label">未公开</div></span>' %>
          <% } %>
          <td><a style="float:left; margin-left: 20px;" href="<%= syzoj.utils.makeUrl(['contest', contest.id]) %>"><%= contest.title %> <%- tag %></a></td>
          <td><%= syzoj.utils.formatDate(contest.start_time) %></td>
          <td><%= syzoj.utils.formatDate(contest.end_time) %></td>
          <td class="font-content"><%- contest.subtitle %></td>
          <td><%= contest.type %></td>
        </tr>
        <% } %>
      </tbody>
    </table>
    <% } else { %>
    <div class="ui placeholder segment">
      <div class="ui icon header">
        <i class="calendar icon" style="margin-bottom: 20px; "></i>
        暂无比赛
      </div>
      <% if (user && user.is_admin) { %>
      <a href="<%= syzoj.utils.makeUrl(['contest', 0, 'edit']) %>" class="ui primary labeled icon button">
        <i class="ui icon write"></i>
        添加第一场比赛
      </a>
      <% } %>
    </div>
    <% } %>
  <br>
  <% include page %>
</div>
<% include footer %>

views/contest_edit.ejs：

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<% this.title = contest.id ? '编辑比赛' : '新建比赛' %>
<% include header %>
<div class="padding">
        <form action="<%= syzoj.utils.makeUrl(['contest', contest.id, 'edit']) %>" method="post">
          <div class="ui form">
              <div class="field">
                <label>比赛名称</label>
                <input type="text" name="title" value="<%= contest.title %>">
              </div>
              <div class="field">
                <label>比赛描述</label>
                <input type="text" name="subtitle" class="markdown-edit" value="<%= contest.subtitle %>">
              </div>
            <div class="field">
                <label>试题列表</label>
                <select class="ui fluid search dropdown" multiple="" id="search_problems" name="problems">
                <% for (let problem of problems) { %>
                <option value="<%= problem.id %>" selected>#<%= problem.id %>. <%= problem.title %></option>
                <% } %>
                </select>
            </div>
            <div class="field">
                <label>比赛管理员</label>
                <select class="ui fluid search dropdown" multiple="" id="search_admins" name="admins">
                <% for (let admin of admins) { %>
                <option value="<%= admin.id %>" selected><span class="user-name user-<%= syzoj.utils.makeUserColor(admin.rating, admin.is_admin) %>"><%= admin.username %></span><span class="user-gray"><span class="user-nameplate"><%= admin.nameplate %></span></span></option>
                <% } %>
                </select>
            </div>
            <div class="inline fields">
              <label>赛制</label>
              <div class="field">
                <div class="ui radio checkbox">
                  <input type="radio" name="type" id="type-NOI" value="NOI"<% if (contest.type === 'NOI') { %> checked="checked"<% } %>>
                  <label for="type-NOI">NOI</label>
                </div>
              </div>
              <div class="field">
                <div class="ui radio checkbox">
                  <input type="radio" name="type" id="type-IOI" value="IOI"<% if (contest.type === 'IOI') { %> checked="checked"<% } %>>
                  <label for="type-IOI">IOI</label>
                </div>
              </div>
              <div class="field">
                <div class="ui radio checkbox">
                  <input type="radio" name="type" id="type-ACM" value="ACM"<% if (contest.type === 'ACM') { %> checked="checked"<% } %>>
                  <label for="type-ACM">ICPC</label>
                </div>
              </div>
            </div>
            <div class="field">
                <label>排行参数（格式：<code>{ "题目 ID": 分值倍数 }</code>）</label>
                <input type="text" name="ranking_params" value="<%= contest.ranklist ? JSON.stringify(contest.ranklist.ranking_params) : '' %>">
            </div>
            <div class="field">
                <label>比赛公告</label>
                <textarea rows="5" name="information" class="markdown-edit"><%= contest.information %></textarea>
            </div>
            <div class="field">
                <label>开始时间</label>
                <input type="text" name="start_time" value="<%= syzoj.utils.formatDate(contest.start_time || syzoj.utils.getCurrentDate()) %>">
            </div>
            <div class="field">
                <label>结束时间</label>
                <input type="text" name="end_time" value="<%= syzoj.utils.formatDate(contest.end_time || syzoj.utils.getCurrentDate()) %>">
            </div>
            <div class="inline field">
              <label class="ui header">公开</label>
              <div class="ui toggle checkbox">
                <input type="checkbox"<% if (contest.is_public) { %> checked<% } %> name="is_public">
                <label><span style="visibility: hidden; ">　</span></label>
              </div>
            </div>
            <div class="inline field">
              <label class="ui header">隐藏统计信息</label>
              <div class="ui toggle checkbox">
                <input type="checkbox"<% if (contest.hide_statistics) { %> checked<% } %> name="hide_statistics">
                <label><span style="visibility: hidden; ">　</span></label>
              </div>
            </div>
            <div style="text-align: center; "><button id="submit_button" type="submit" class="ui labeled icon blue button"><i class="ui edit icon"></i>提交</button></div>
          </div>
        </form>
<script>
$(function () {
  $('#search_admins')
    .dropdown({
      debug: true,
      apiSettings: {
        url: '/api/v2/search/users/{query}',
        onResponse: function (response) {
          var a = $('#search_admins').val().map(function (x) { return parseInt(x) });
          if (response.results) {
            response.results = response.results.filter(function(x){ return !a.includes(parseInt(x.value))});
          }
          return response;
        },
        cache: false
      }
    });
  $('#search_problems')
    .dropdown({
      debug: true,
      apiSettings: {
        url: '/api/v2/search/problems/{query}',
        onResponse: function (response) {
          var a = $('#search_problems').val().map(function (x) { return parseInt(x) });
          if (response.results) {
            response.results = response.results.filter(function(x) {return !a.includes(parseInt(x.value));});
          }
          return response;
        },
        cache: false
      }
    });
});
</script>
<% include footer %>

views/contest_header.ejs：

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<style>
.ui.label.pointing.below.left::before { left: 12%; }
.ui.label.pointing.below.right::before { left: 88%; }
.ui.label.pointing.below.left { margin-bottom: 0; }
.ui.label.pointing.below.right { margin-bottom: 0; float: right; }
#back_to_contest { display: none;  }
</style>
<div class="padding">
  <h1><%= contest.title %></h1>
  <div style="margin-bottom: 30px;"><%- contest.subtitle %></div>
  <% let unveiled = (isSupervisior || syzoj.utils.getCurrentDate() >= contest.start_time); %>
  <% const seeResult = (isSupervisior || contest.ended); %>
  <% const seeRanklist = seeResult || (contest.allowedSeeingResult() && contest.allowedSeeingOthers()); %>
  <% let start = syzoj.utils.formatDate(contest.start_time), end = syzoj.utils.formatDate(contest.end_time); %>
  <% if (contest.running && start.split(' ')[0] === end.split(' ')[0]) {
    start = start.split(' ')[1]; end = end.split(' ')[1];
  } %>
  <div class="ui pointing below left label"><%= start %></div>
  <div class="ui pointing below right label"><%= end %></div>
  <% let timePercentage = Math.floor(Math.min(1, (syzoj.utils.getCurrentDate() - contest.start_time) / (contest.end_time - contest.start_time)) * 100); %>
  <div id="timer-progress" class="ui tiny indicating progress<% if (timePercentage == 100) { %> success<% } %>" data-percent="<%= timePercentage %>">
    <div class="bar" style="width: <%= timePercentage %>%;"></div>
  </div>
  <div class="ui grid"  style="display: block;">
    <div class="row">
      <div class="column">
        <div class="ui buttons">
            <a class="ui small orange button" href="<%= syzoj.utils.makeUrl(['contest', contest.id]) %>">信息</a>
            <% if (unveiled) { %><a class="ui small yellow button" href="<%= syzoj.utils.makeUrl(['contest', contest.id, 'problem']) %>">题目</a><% } %>
          <% if(seeRanklist) { %>
            <a class="ui small blue button" href="<%= syzoj.utils.makeUrl(['contest', contest.id, 'ranklist']) %>">排行榜</a>
          <% } %>
          <% let submissionsUrl = seeResult ?
            syzoj.utils.makeUrl(['submissions'], {contest: contest.id}) :
            syzoj.utils.makeUrl(['contest', contest.id, 'submissions']); %>
          <a class="ui small positive button" href="<%= syzoj.utils.makeUrl(['contest', contest.id, 'submissions']) %>">提交记录</a>
          <% if (isSupervisior) { %>
            <a class="ui small button" href="<%= syzoj.utils.makeUrl(['contest', contest.id, 'edit']) %>">编辑比赛</a>
          <% } %>
        </div>
      </div>
    </div>

views/contest_footer.ejs：

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</div>
</div>

<script>
$(function () {
  setInterval(function () {
    $('#timer-progress').progress({
      value: Date.now() / 1000 - <%= contest.start_time %>,
      total: <%= contest.end_time - contest.start_time %>
    });
  }, 5000);
});
</script>

views/contest.ejs：

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<% this.title = contest.title + ' - 比赛' %>
<% include header %>
<% include contest_header %>
<div class="row">
  <div class="column">
    <h4 class="ui top attached block header">信息与公告</h4>
    <div class="ui bottom attached segment font-contest">
      <%- contest.information %>
    </div>
  </div>
</div>
<% include contest_footer %>
<% include footer %>

views/contest_problem.ejs：

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<% this.title = contest.title + ' - 题目' %>
<% include header %>
<% include contest_header %>
<div class="row">
  <div class="column">
      <table class="ui selectable celled table">
        <thead>
          <tr>
            <th class="one wide" style="text-align: center">状态</th>
            <th>题目</th>
            <% if (hasStatistics) { %>
              <th class="one wide center aligned">统计</th>
            <% } %>
          </tr>
        </thead>
        <tbody>
          <%
          let i = 0;
          for (let problem of problems) {
            i++;
          %>
          <tr>
            <td class="center aligned" style="white-space: nowrap; ">
            <% if (problem.judge_id) { %>
              <a href="<%= syzoj.utils.makeUrl(['contest', 'submission', problem.judge_id]) %>">
              <% if (typeof problem.status === 'string') { %>
                <span class="status <%= problem.status.toLowerCase().split(' ').join('_') %>">
                  <b>
                  <i class="<%= icon[getStatusMeta(problem.status)] || 'remove' %> icon"></i>
                  <%= problem.feedback || problem.status %>
                  </b>
                </span>
              <% } else if (typeof problem.status === 'object') { %>
                <% if (problem.status.accepted) { %>
                  <span class="score score_10">
                    <% if (problem.status.unacceptedCount === 0) { %>
                      +
                    <% } else { %>
                      +<%= problem.status.unacceptedCount %>
                    <% } %>
                  </span>
                <% } else { %>
                  <span class="score score_0">
                    <% if (problem.status.unacceptedCount !== 0) { %>
                      -<%= problem.status.unacceptedCount %>
                    <% } %>
                  </span>
                <% } %>
              <% } %>
            <% } %>
            </td>
            <td><a href="<%= syzoj.utils.makeUrl(['contest', contest.id, 'problem', i]) %>"><%= syzoj.utils.removeTitleTag(problem.problem.title) %></a></td>
            <% if (hasStatistics) { %>
              <td class="center aligned" style="white-space: nowrap; ">
              <a href="<%= syzoj.utils.makeUrl(['contest', contest.id, 'submissions'], { problem_id: i, status: 'Accepted' }) %>"><%= problem.statistics.accepted %></a>
              /
                <a href="<%= syzoj.utils.makeUrl(['contest', contest.id, 'submissions'], { problem_id: i, min_score: 1 }) %>"><%= problem.statistics.partially %></a>
                <% if (contest.type === 'NOI' || contest.type === 'IOI') { %>
                /
              <% } %>
              <a href="<%= syzoj.utils.makeUrl(['contest', contest.id, 'submissions'], { problem_id: i }) %>"><%= problem.statistics.attempt %></a>
              </td>
            <% } %>
          </tr>
        <% } %>
        </tbody>
    </table>
  </div>
</div>
<% include contest_footer %>
<% include footer %>

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<% this.title = contest.title + ' - 排名' %>
<% include header %>
<% include contest_header %>
<style>
.submit_time {
  font-size: 0.8em;
  margin-top: 5px;
  color: #000;
}
</style>
<table class="ui very basic center aligned table">
    <thead>
    <tr>
        <th>#</th>
        <th>用户名</th>
        <% if (contest.type === 'ACM') { %>
          <th>通过数量</th>
          <th>罚时</th>
        <% } %>
        <% for (let i = 0; i < problems.length; i++) { %>
        <th>
          <a href="<%= syzoj.utils.makeUrl(['contest', contest.id, 'problem', i + 1]) %>">
            <%= syzoj.utils.removeTitleTag(problems[i].title) %>
          </a>
        </th>
        <% } %>
        <% if (contest.type === 'NOI' || contest.type === 'IOI') { %>
          <th>总分</th>
        <% } %>
    </tr>
    </thead>
    <tbody>
    <%
    for (let problem of problems) {
      let i = 0, min, minPos = -1;
      for (let item of ranklist) {
        i++;
        let condition;
        if (contest.type === 'ACM') condition = item.player.score_details[problem.id] && item.player.score_details[problem.id].accepted && (minPos === -1 || item.player.score_details[problem.id].acceptedTime < min.player.score_details[problem.id].acceptedTime);
        else condition = item.player.score_details[problem.id] && item.player.score_details[problem.id].score === 100 && (minPos === -1 || item.player.score_details[problem.id].judge_state.submit_time < min.player.score_details[problem.id].judge_state.submit_time);
        if (condition) {
          min = item;
          minPos = i;
        }
      }
      problem.min = minPos;
    }

    let i = 0, rank = 0, lastItem;
    for (let item of ranklist) {
      i++;
      let latest = contest.start_time, timeSum = 0, unacceptedCount = 0;
    %>
    <tr>
        <%
          if (contest.type === 'NOI' || contest.type === 'IOI') {
            if (i === 1 || item.player.score !== lastItem.player.score) rank = i;
          } else if (contest.type === 'ACM') {
            for (let problem of problems) {
              if (item.player.score_details[problem.id] && item.player.score_details[problem.id].accepted) {
                timeSum += (item.player.score_details[problem.id].acceptedTime - contest.start_time) + (item.player.score_details[problem.id].unacceptedCount * 20 * 60);
                unacceptedCount += item.player.score_details[problem.id].unacceptedCount;
              }
            }
            item.player.timeSum = timeSum;

            if (i === 1 || item.player.score !== lastItem.player.score || item.player.timeSum !== lastItem.player.timeSum) rank = i;
          }
        %>
        <td>
          <% if (rank == 1) { %>
            <div class="ui yellow ribbon label">
          <% } else if (rank == 2) { %>
            <div class="ui ribbon label">
          <% } else if (rank == 3) { %>
            <div class="ui brown ribbon label" style="background-color: #C47222 !important;">
          <% } else { %>
            <div>
          <% } %>
          <%= rank %>
          </div>
        </td>
        <td><a href="<%= syzoj.utils.makeUrl(['user', item.user.id]) %>"><span class="user-name user-<%= syzoj.utils.makeUserColor(item.user.rating, item.user.is_admin) %>"><%= item.user.username %></span></a><% if (item.user.nickname) { %><span class="user-tag bg-<%= syzoj.utils.makeUserColor(item.user.rating, item.user.is_admin) %>"><%- item.user.nickname %></span><% } %><span class="user-gray"><span class="user-nameplate"><%= item.user.nameplate %></span></span></td>
        <% if (contest.type === 'ACM') { %>
          <td>
            <span class="score score_<%= parseInt((item.player.score / ranklist[0].player.score * 10) || 0) %>">
              <%= item.player.score %>
            </span>
          </td>
          <td>
            <%= syzoj.utils.formatTime(timeSum) %>
          </td>
        <% } %>
        <% for (let problem of problems) { %>
          <% if (problem.min === i) { %>
            <td style="background: rgb(244, 255, 245); ">
          <% } else { %>
            <td>
          <% } %>
          <% if (!item.player.score_details[problem.id]) { %>
            </td>
          <% } else if (contest.type === 'ACM') { %>
              <a href="<%= syzoj.utils.makeUrl(['submission', item.player.score_details[problem.id].judge_id]) %>">
                <% if (item.player.score_details[problem.id].accepted) { %>
                  <span class="score score_10">
                    <% if (item.player.score_details[problem.id].unacceptedCount) { %>
                      +<%= item.player.score_details[problem.id].unacceptedCount %>
                    <% } else { %>
                      +
                    <% } %>
                  </span>

                  <div class="submit_time">
                    <%= syzoj.utils.formatTime(item.player.score_details[problem.id].acceptedTime - contest.start_time) %>
                  </div>
                <% } else if (item.player.score_details[problem.id].unacceptedCount) { %>
                  <span class="score score_0">
                    -<%= item.player.score_details[problem.id].unacceptedCount %>
                  </span>
                <% } %>
              </a>
            </td>
          <% } else if (contest.type === 'NOI' || contest.type === 'IOI') { %>
              <a href="<%= syzoj.utils.makeUrl(['submission', item.player.score_details[problem.id].judge_id]) %>">
                <% if (item.player.score_details[problem.id].weighted_score != null) { %>
                  <span class="score score_<%= parseInt((item.player.score_details[problem.id].score / 10) || 0) %>">
                    <%= Math.round(item.player.score_details[problem.id].weighted_score) %>
                  </span>
                <% } else { %>
                  <span class="status compile_error">
                    0
                  </span>
                <% } %>
              </a>
              <div class="submit_time">
                <%= syzoj.utils.formatTime(item.player.score_details[problem.id].judge_state.submit_time - contest.start_time) %>
                <% latest = Math.max(latest, item.player.score_details[problem.id].judge_state.submit_time)  %>
              </div>
            </td>
          <% } %>
        <% } %>
        <% if (contest.type === 'NOI' || contest.type === 'IOI') { %>
          <td>
            <span class="score score_<%= parseInt((item.player.score / ranklist[0].player.score * 10) || 0) %>">
              <%= item.player.score %>
            </span>
            <div class="submit_time">
              <%= syzoj.utils.formatTime(latest - contest.start_time) %>
            </div>
          </td>
        <% } %>
    </tr>
    <% lastItem = item; %>
    <% } %>
    </tbody>
</table>
<% if (!ranklist.length) { %>
<div style="background-color: #fff; height: 18px; margin-top: -18px; "></div>
<div class="ui placeholder segment" style="margin-top: 0px; ">
  <div class="ui icon header">
    <i class="ui file icon" style="margin-bottom: 20px; "></i>
    暂无选手提交
  </div>
</div>
<% } %>
<% include contest_footer %>
<% include footer %>

作业功能

教练要求可以布置作业，但是 SYZOJ 并没有这个功能，所以需要自己写一个。

因为和比赛很像，所以前后端都可以从比赛功能抄一些代码。

首先定义一个用于存数据的表，新建 models/homework.ts：

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import * as TypeORM from "typeorm";
import Model from "./common";

declare var syzoj, ErrorMessage: any;

import User from "./user";
import Problem from "./problem";

@TypeORM.Entity()
export default class Homework extends Model {
  static cache = true;

  @TypeORM.PrimaryGeneratedColumn()
  id: number;

  @TypeORM.Column({ nullable: true, type: "varchar", length: 80 })
  title: string;

  @TypeORM.Column({ nullable: true, type: "text" })
  subtitle: string;

  @TypeORM.Column({ nullable: true, type: "text" })
  information: string;

  @TypeORM.Column({ nullable: true, type: "text" })
  problems: string;

  @TypeORM.Column({ nullable: true, type: "text" })
  users: string;

  @TypeORM.Column({ nullable: true, type: "boolean" })
  is_public: boolean;

  async getUsers() {
    if (!this.users) return [];
    return this.users.split('|').map(x => parseInt(x));
  }

  async getProblems() {
    if (!this.problems) return [];
    return this.problems.split('|').map(x => parseInt(x));
  }

  async setProblemsNoCheck(problemIDs) {
    this.problems = problemIDs.join('|');
  }

  async setProblems(s) {
    let a = [];
    await s.split('|').forEachAsync(async x => {
      let problem = await Problem.findById(x);
      if (!problem) return;
      a.push(x);
    });
    this.problems = a.join('|');
  }
}

然后修改后端代码，新建 modules/homework.js：

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let Homework = syzoj.model('homework');
let Problem = syzoj.model('problem');
let User = syzoj.model('user');

app.get ('/homeworks', async (req, res) => {
  try {
    if (!res.locals.user) throw new ErrorMessage('请登录后继续。', { '登录': syzoj.utils.makeUrl(['login'], { 'url': req.originalUrl }) });
    let where;
    if (res.locals.user && res.locals.user.is_admin) where = {}
    else where = { is_public: true };

    let paginate = syzoj.utils.paginate(await Homework.countForPagination(where), req.query.page, syzoj.config.page.contest);
    let homeworks = await Homework.queryPage (paginate, where);

    await homeworks.forEachAsync(async x => x.subtitle = await syzoj.utils.markdown(x.subtitle));

    res.render('homeworks', {
      homeworks: homeworks,
      paginate: paginate
    })
  } catch (e) {
    syzoj.log(e);
    res.render('error', {
      err: e
    });
  }
})

app.get('/homework/:id/edit', async (req, res) => {
  try {
    if (!res.locals.user) throw new ErrorMessage('请登录后继续。', { '登录': syzoj.utils.makeUrl(['login'], { 'url': req.originalUrl }) });
    if (!res.locals.user || !res.locals.user.is_admin) throw new ErrorMessage('您没有权限进行此操作。');

    let homework_id = parseInt(req.params.id);
    let homework = await Homework.findById(homework_id);
    if (!homework) {
      homework = await Homework.create();
      homework.id = 0;
    }

    let problems = [], users_id = [];
    if (homework.problems) problems = await homework.problems.split('|').mapAsync(async id => await Problem.findById(id));
    if (homework.users) users_id = await homework.users.split('|');

    let items = [];
    let user_count = await User.count ();
    for (let user_id = 1; user_id <= user_count; ++user_id) {
      items.push ([await User.findById (user_id), users_id.includes (user_id.toString ())]);
    }

    res.render('homework_edit', {
      homework: homework,
      problems: problems,
      items: items
    });
  } catch (e) {
    syzoj.log(e);
    res.render('error', {
      err: e
    });
  }
});

app.post('/homework/:id/edit', async (req, res) => {
  try {
    if (!res.locals.user) throw new ErrorMessage('请登录后继续。', { '登录': syzoj.utils.makeUrl(['login'], { 'url': req.originalUrl }) });
    if (!res.locals.user || !res.locals.user.is_admin) throw new ErrorMessage('您没有权限进行此操作。');

    let homework_id = parseInt(req.params.id);
    let homework = await Homework.findById(homework_id);
    if (!homework) {
      homework = await Homework.create();
    }

    if (!req.body.title.trim()) throw new ErrorMessage('作业名不能为空。');
    homework.title = req.body.title;
    homework.subtitle = req.body.subtitle;
    if (!Array.isArray(req.body.problems)) req.body.problems = [req.body.problems];
    if (!Array.isArray(req.body.items)) req.body.items = [req.body.items];
    homework.problems = req.body.problems.join('|');
    homework.information = req.body.information;
    homework.is_public = req.body.is_public === 'on';
    homework.users = '';
    for (let user of req.body.items) {
      homework.users += user + '|';
    }
    homework.users = homework.users.substr (0, homework.users.length - 1);

    await homework.save();

    res.redirect(syzoj.utils.makeUrl(['homework', homework.id]));
  } catch (e) {
    syzoj.log(e);
    res.render('error', {
      err: e
    });
  }
});

app.get('/homework/:id', async (req, res) => {
  try {
    if (!res.locals.user) throw new ErrorMessage('请登录后继续。', { '登录': syzoj.utils.makeUrl(['login'], { 'url': req.originalUrl }) });
    const curUser = res.locals.user;
    let homework_id = parseInt(req.params.id);

    let homework = await Homework.findById(homework_id);
    if (!homework) throw new ErrorMessage('无此作业。');
    if (!homework.is_public && (!res.locals.user || !res.locals.user.is_admin)) throw new ErrorMessage('您无权查看此作业。');

    const isSupervisior = res.locals.user.is_admin;
    homework.subtitle = await syzoj.utils.markdown(homework.subtitle);
    homework.information = await syzoj.utils.markdown(homework.information);

    res.render('homework', {
      homework: homework,
      isSupervisior: isSupervisior
    });
  } catch (e) {
    syzoj.log(e);
    res.render('error', {
      err: e
    });
  }
});

app.get('/homework/:id/problem', async (req, res) => {
  try {
    if (!res.locals.user) throw new ErrorMessage('请登录后继续。', { '登录': syzoj.utils.makeUrl(['login'], { 'url': req.originalUrl }) });
    const curUser = res.locals.user;
    let homework_id = parseInt(req.params.id);

    let homework = await Homework.findById(homework_id);
    if (!homework) throw new ErrorMessage('无此作业。');
    if (!homework.is_public && (!curUser || !curUser.is_admin)) throw new ErrorMessage('您无权查看此作业。');

    const isSupervisior = curUser.is_admin;
    homework.subtitle = await syzoj.utils.markdown(homework.subtitle);

    let problems_id = await homework.getProblems();
    let problems = await problems_id.mapAsync(async id => await Problem.findById(id));

    let state = [];
    let users_id = await homework.users.split ('|');
    if (users_id.includes (curUser.id.toString ())) {
      for (let problem of problems) {
        state.push (await curUser.getProblemScore (problem.id));
      }
    }

    res.render('homework_problem', {
      homework: homework,
      problems: problems,
      state: state,
      isSupervisior: isSupervisior
    });
  } catch (e) {
    syzoj.log(e);
    res.render('error', {
      err: e
    });
  }
});

app.get('/homework/:id/ranklist', async (req, res) => {
    try {
    if (!res.locals.user) throw new ErrorMessage('请登录后继续。', { '登录': syzoj.utils.makeUrl(['login'], { 'url': req.originalUrl }) });
    let homework_id = parseInt(req.params.id);
    let homework = await Homework.findById(homework_id);
    const curUser = res.locals.user;
    
    if (!homework) throw new ErrorMessage('无此作业。');
    if (!homework.is_public && (!res.locals.user || !res.locals.user.is_admin)) throw new ErrorMessage('您无权查看此作业。');

    const isSupervisior = res.locals.user.is_admin;

    let problems_id = await homework.getProblems();
    let problems = await problems_id.mapAsync(async id => await Problem.findById(id));

    let users = await homework.getUsers ();
    users = await users.mapAsync(async id => await User.findById(id));
    let ranklist = [];

    for (let user of users) {
      let state = [user];
      let sum = 0;
      for (let problem of problems) {
        let score = await user.getProblemScore (problem.id);
        state.push (score);
        sum += score;
      }
      state.push (sum);
      ranklist.push (state);
    }
    ranklist.sort (function (a, b) {
      if (a[a.length - 1] > b[b.length - 1]) {
        return -1;
      }
      if (a[a.length - 1] == b[b.length - 1]) {
        return 0;
      }
      return 1;
    })

    res.render('homework_ranklist', {
      homework: homework,
      problems: problems,
      ranklist: ranklist,
      isSupervisior: isSupervisior
    });
  } catch (e) {
    syzoj.log(e);
    res.render('error', {
      err: e
    });
  }
});

前端部分虽然要写的代码很多，但与比赛页面几乎一样，除了完成情况需要重写，其他页面可以直接从比赛部分抄然后修改一下。

views/homeworks.ejs：

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<% this.title = '作业' %>
<% include header %>
<div class="padding">
    <% if (homeworks.length) { %>
    <% if (user && user.is_admin) { %>
    <form class="ui mini form">
      <div class="inline fields" style="margin-bottom: 25px; white-space: nowrap; ">
        <a href="<%= syzoj.utils.makeUrl(['homework', 0, 'edit']) %>" class="ui mini labeled icon right floated button" style="margin-left: auto; ">
          <i class="ui icon write"></i>
          新建作业
        </a>
     </div>
    </form>
    <% } %>
    <table class="ui very basic center aligned table">
      <thead>
        <tr>
          <th><span style="float:left; margin-left: 20px;">作业名称</span></th>
          <th style="text-align: left; width: 70%;">描述</th>
        </tr>
      </thead>
      <tbody>
        <% for (let homework of homeworks) { %>
        <tr>
          <td><a style="float:left; margin-left: 20px;" href="<%= syzoj.utils.makeUrl(['homework', homework.id]) %>"><%= homework.title %> <% if (!homework.is_public) { %><span class="ui header"><div class="ui tiny red label">未布置</div></span><% } %></a></td>
          <td class="font-content" style="text-align: left;"><%- homework.subtitle %></td>
        </tr>
        <% } %>
      </tbody>
    </table>
    <% } else { %>
    <div class="ui placeholder segment">
      <div class="ui icon header">
        <i class="calendar icon" style="margin-bottom: 20px; "></i>
        暂无作业
      </div>
      <% if (user && user.is_admin) { %>
      <a href="<%= syzoj.utils.makeUrl(['homework', 0, 'edit']) %>" class="ui primary labeled icon button">
        <i class="ui icon write"></i>
        布置第一份作业
      </a>
      <% } %>
    </div>
    <% } %>
  <br>
  <% include page %>
</div>
<% include footer %>

views/homework_edit.ejs：

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<% this.title = homework.id ? '编辑作业' : '新建作业' %>
<% include header %>
<div class="padding">
        <form action="<%= syzoj.utils.makeUrl(['homework', homework.id, 'edit']) %>" method="post">
          <div class="ui form">
              <div class="field">
                <label>作业名称</label>
                <input type="text" name="title" value="<%= homework.title %>">
              </div>
              <div class="field">
                <label>作业描述</label>
                <input type="text" name="subtitle" class="markdown-edit" value="<%= homework.subtitle %>">
              </div>
            <div class="field">
                <label>题目列表</label>
                <select class="ui fluid search dropdown" multiple="" id="search_problems" name="problems">
                <% for (let problem of problems) { %>
                <option value="<%= problem.id %>" selected>#<%= problem.id %>. <%= problem.title %></option>
                <% } %>
                </select>
            </div>
            <div class="inline fields">
                <label>参与成员</label>
                <% for (let item of items) { %>
                    <div class="field">
                          <div>
                            <input style="vertical-align: middle;" type="checkbox" name="items" value="<%= item[0].id %>" <% if (item[1]) { %> checked="checked"<% } %>>
                            <label for="condition_participate">
                                <span class="user-name user-<%= syzoj.utils.makeUserColor(item[0].rating, item[0].is_admin) %>"><%= item[0].username %></span><span class="user-gray"><span class="user-nameplate"><%= item[0].nameplate %></span></span>
                            </label>
                          </div>
                    </div>
                <% } %>
            </div>
            <div class="field">
                <label>作业公告</label>
                <textarea rows="5" name="information" class="markdown-edit"><%= homework.information %></textarea>
            </div>
            <div class="inline field">
              <label class="ui header">布置</label>
              <div class="ui toggle checkbox">
                <input type="checkbox"<% if (homework.is_public) { %> checked<% } %> name="is_public">
                <label><span style="visibility: hidden; ">　</span></label>
              </div>
            </div>
            <div style="text-align: center; "><button id="submit_button" type="submit" class="ui labeled icon blue button"><i class="ui edit icon"></i>提交</button></div>
          </div>
        </form>
<script>
$(function () {
  $('#search_problems')
    .dropdown({
      debug: true,
      apiSettings: {
        url: '/api/v2/search/problems/{query}',
        onResponse: function (response) {
          var a = $('#search_problems').val().map(function (x) { return parseInt(x) });
          if (response.results) {
            response.results = response.results.filter(function(x) {return !a.includes(parseInt(x.value));});
          }
          return response;
        },
        cache: false
      }
    });
});
</script>
<% include footer %>

views/homework_header.ejs：

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<style>
.ui.label.pointing.below.left::before { left: 12%; }
.ui.label.pointing.below.right::before { left: 88%; }
.ui.label.pointing.below.left { margin-bottom: 0; }
.ui.label.pointing.below.right { margin-bottom: 0; float: right; }
#back_to_homework { display: none;  }
</style>
<div class="padding">
  <h1><%= homework.title %></h1>
  <div style="margin-bottom: 30px;"><%- homework.subtitle %></div>
  <div class="ui grid" style="display: block;">
    <div class="row">
      <div class="column">
        <div class="ui buttons">
          <a class="ui small orange button" href="<%= syzoj.utils.makeUrl(['homework', homework.id]) %>">信息</a>
          <a class="ui small yellow button" href="<%= syzoj.utils.makeUrl(['homework', homework.id, 'problem']) %>">题目</a>
          <a class="ui small blue button" href="<%= syzoj.utils.makeUrl(['homework', homework.id, 'ranklist']) %>">完成情况</a>
          <% if (isSupervisior) { %>
            <a class="ui small button" href="<%= syzoj.utils.makeUrl(['homework', homework.id, 'edit']) %>">编辑作业</a>
          <% } %>
        </div>
      </div>
    </div>

views/homework_footer.ejs：

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</div>
</div>

views/homework.ejs：

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<% this.title = homework.title + ' - 作业' %>
<% include header %>
<% include homework_header %>
<div class="row">
  <div class="column">
    <h4 class="ui top attached block header">信息与公告</h4>
    <div class="ui bottom attached segment font-content">
      <%- homework.information %>
    </div>
  </div>
</div>
<% include homework_footer %>
<% include footer %>

views/homework_problem.ejs：

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<% this.title = homework.title + ' - 题目' %>
<% include header %>
<% include homework_header %>
<div class="row">
  <div class="column">
      <table class="ui selectable celled table">
        <thead>
          <tr>
            <% if (state.length) { %>
              <th class="one wide" style="text-align: center">状态</th>
            <% } %>
            <th>题目</th>
          </tr>
        </thead>
        <tbody>
          <%
          let i = 0;
          for (let problem of problems) {
          %>
          <tr>
            <% if (state.length) { %>
              <td class="center aligned" style="white-space: nowrap; ">
              <% if (state[i] != null) { %>
                <b>
                  <% if (state[i] == 100) { %>
                    <i class="check icon score_10"></i>
                  <% } else { %>
                    <span class="score score_<%= parseInt (state[i] / 10) %>"><%= state[i] %></span>
                  <% } %>
                </b>
              <% } %>
              </td>
            <% } %>
            <td><a href="<%= syzoj.utils.makeUrl(['problem', problem.id]) %>"><%= syzoj.utils.removeTitleTag(problem.title) %></a></td>
          </tr>
        <%
          i++;
        }
        %>
        </tbody>
    </table>
  </div>
</div>
<% include homework_footer %>
<% include footer %>

views/homework_ranklist.ejs：

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<% this.title = homework.title + ' - 完成情况' %>
<% include header %>
<% include homework_header %>
<style>
.submit_time {
  font-size: 0.8em;
  margin-top: 5px;
  color: #000;
}
</style>
<table class="ui very basic center aligned table">
    <thead>
    <tr>
        <th>用户名</th>
        <% for (let problem of problems) { %>
        <th>
          <a href="<%= syzoj.utils.makeUrl(['problem', problem.id]) %>">
            <%= syzoj.utils.removeTitleTag(problem.title) %>
          </a>
        </th>
        <% } %>
    </tr>
    </thead>
    <tbody>
      <% for (let item of ranklist) { %>
        <tr>
          <td><a href="<%= syzoj.utils.makeUrl(['user', item[0].id]) %>"><span class="user-name user-<%= syzoj.utils.makeUserColor(item[0].rating, item[0].is_admin) %>"><%= item[0].username %></span></a><% if (item[0].nickname) { %><span class="user-tag bg-<%= syzoj.utils.makeUserColor(item[0].rating, item[0].is_admin) %>"><%- item[0].nickname %></span><% } %><span class="user-gray"><span class="user-nameplate"><%= item[0].nameplate %></span></span></td>
          <%
          let i = 1;
          for (let problem of problems) {
          %>
            <td>
              <% if (item[i] != null) { %>
                <b>
                  <% if (item[i] == 100) { %>
                    <i class="check icon score_10"></i>
                  <% } else { %>
                    <span class="score score_<%= parseInt (item[i] / 10) %>"><%= item[i] %></span>
                  <% } %>
                </b>
              <% } %>
            </td>
          <%
            ++i;
          }
          %>
        </tr>
      <% } %> 
    </tbody>
</table>
<% include homework_footer %>
<% include footer %>

最后，需要顶栏中显示作业按钮，所以在 views/header.ejs 中加入以下代码：

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<a class="item<% if (active.startsWith('homework')) { %> active<% } %>" href="/homeworks"><i class="book icon"></i> 作业</a>