From 5561e0bc3a28b85503d43d213dc1e27c826536e7 Mon Sep 17 00:00:00 2001
From: yuetsh <517252939@qq.com>
Date: Tue, 13 Oct 2026 13:56:03 +0800
Subject: [PATCH] =?UTF-8?q?feat(=E5=90=8E=E5=8F=B0=E7=94=A8=E6=88=B7):=20?=
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用户列表去掉 ID、真名、占位邮箱和四颗彩色按钮。下载的名单开头带 BOM，Excel 打开中文不再乱码。

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 apps/web/src/admin/api.ts                     |  20 +-
 .../web/src/admin/user/components/Actions.vue |  57 +-
 .../admin/user/components/UserNameCell.vue    |  19 +-
 apps/web/src/admin/user/generate.vue          | 508 +++++++++++++++---
 apps/web/src/admin/user/list.vue              | 161 ++++--
 5 files changed, 607 insertions(+), 158 deletions(-)

diff --git a/apps/web/src/admin/api.ts b/apps/web/src/admin/api.ts
index 1c7b8b8..ef7bf3d 100644
--- a/apps/web/src/admin/api.ts
+++ b/apps/web/src/admin/api.ts
@@ -51,6 +51,7 @@ import type {
   GenerateTestInputsRequest,
   GenerateTestInputsResponse,
   TestCaseFiles,
+  CheckUsernamesResponse,
 } from "@oj2/contract"
 
 export function getBaseInfo() {
@@ -182,7 +183,15 @@ export function getAdminUserRank(offset: number, limit: number, keyword: string)
 }
 
 // 用户列表
-export function getUserList(offset = 0, limit = 10, type = "", keyword: string, orderBy = "") {
+export function getUserList(
+  offset = 0,
+  limit = 10,
+  type = "",
+  keyword: string,
+  orderBy = "",
+  /** 班级，NO_CLASS 是「没填班级」 */
+  className = "",
+) {
   return api.get<AdminUserList>("admin/users", {
     // "-last_login" 是旧接口传下来的取值（路由 query 里可能还存着），改叫 "-lastLogin"；
     // "-online" 是新增的，原样透传
@@ -192,10 +201,16 @@ export function getUserList(offset = 0, limit = 10, type = "", keyword: string,
       keyword,
       type,
       orderBy: orderBy === "-last_login" ? "-lastLogin" : orderBy,
+      className: className || undefined,
     },
   })
 }
 
+/** 批量建号之前查重：这些用户名哪些已经有了 */
+export function checkUsernames(usernames: string[]) {
+  return api.post<CheckUsernamesResponse>("admin/users/check", { usernames })
+}
+
 // 编辑用户
 export function editUser(user: AdminUserForm) {
   return api.put<AdminUser>(`admin/users/${user.id}`, {
@@ -216,8 +231,9 @@ export async function resetPassword(userID: number) {
 }
 
 // 导入用户
+/** 批量建号。addedClasses：这批里的新班级，后端已经顺手加进了班级列表 */
 export function importUsers(users: string[][]) {
-  return api.post("admin/users", { users })
+  return api.post<{ imported: number; addedClasses: string[] }>("admin/users", { users })
 }
 
 // 批量删除用户
diff --git a/apps/web/src/admin/user/components/Actions.vue b/apps/web/src/admin/user/components/Actions.vue
index ececb14..4c744ff 100644
--- a/apps/web/src/admin/user/components/Actions.vue
+++ b/apps/web/src/admin/user/components/Actions.vue
@@ -1,7 +1,13 @@
 <script lang="ts" setup>
+import { Icon } from "@iconify/vue"
 import { editUser } from "admin/api"
 import type { AdminUserForm } from "utils/types"
 
+/**
+ * 用户列表一行的操作（设计稿「后台用户与批量建号」UsList）：最常用的「重置密码」常驻
+ * （学生忘了密码是后台进得最多的一件事），其余收进 ⋯。原来四颗彩色按钮并排，
+ * 1366 的屏上把「上次登录」挤成了半截
+ */
 interface Props {
   user: AdminUserForm
 }
@@ -13,33 +19,42 @@ const emit = defineEmits<{
   (e: "resetPassword", value: AdminUserForm): void
 }>()
 
+const dialog = useDialog()
+
 async function banUser() {
   props.user.isDisabled = !props.user.isDisabled
   await editUser(props.user)
   emit("userBanned", props.user)
 }
+
+const menuOptions = computed<DropdownOption[]>(() => [
+  { label: "编辑", key: "edit" },
+  { label: props.user.isDisabled ? "解除禁用" : "禁用", key: "ban" },
+  { type: "divider", key: "divider" },
+  { label: "删除", key: "delete" },
+])
+
+function onMenu(key: string) {
+  if (key === "edit") emit("openEditModal", props.user)
+  else if (key === "ban") banUser()
+  else if (key === "delete") {
+    dialog.warning({
+      title: `删除 ${props.user.username}？`,
+      content: "删掉就找不回来了。交过题的账号删不掉，那种请改为禁用。",
+      positiveText: "删除",
+      negativeText: "不删",
+      onPositiveClick: () => emit("deleteUser", [props.user.id]),
+    })
+  }
+}
 </script>
 <template>
-  <n-flex>
-    <n-button size="small" type="error" secondary @click="$emit('resetPassword', props.user)">
-      重置密码
-    </n-button>
-    <n-button size="small" type="primary" secondary @click="$emit('openEditModal', props.user)">
-      编辑
-    </n-button>
-    <n-button
-      size="small"
-      secondary
-      :type="props.user.isDisabled ? 'info' : 'error'"
-      @click="banUser"
-    >
-      {{ props.user.isDisabled ? "解封" : "封号" }}
-    </n-button>
-    <n-popconfirm @positive-click="$emit('deleteUser', [props.user.id])">
-      <template #trigger>
-        <n-button size="small" secondary type="warning">删除</n-button>
-      </template>
-      确定删除这个用户吗？删除后无法恢复！
-    </n-popconfirm>
+  <n-flex :size="4" justify="end" :wrap="false">
+    <n-button size="small" @click="emit('resetPassword', props.user)">重置密码</n-button>
+    <n-dropdown trigger="click" placement="bottom-end" :options="menuOptions" @select="onMenu">
+      <n-button size="small" quaternary aria-label="更多">
+        <template #icon><Icon icon="ph:dots-three-bold" /></template>
+      </n-button>
+    </n-dropdown>
   </n-flex>
 </template>
diff --git a/apps/web/src/admin/user/components/UserNameCell.vue b/apps/web/src/admin/user/components/UserNameCell.vue
index 69e5685..52f4ead 100644
--- a/apps/web/src/admin/user/components/UserNameCell.vue
+++ b/apps/web/src/admin/user/components/UserNameCell.vue
@@ -11,20 +11,27 @@ const props = defineProps<Props>()
 const hasRoleTag = computed(() => props.user.adminType !== USER_TYPE.REGULAR_USER)
 </script>
 <template>
-  <n-flex align="center">
-    <n-tag v-if="props.user.isDisabled" type="error" size="small"> 封号中 </n-tag>
-    <n-tag v-if="hasRoleTag" :type="getUserRole(props.user.adminType).type" size="small">
+  <!-- 用户名在前（老师要认的是它），角色、禁用这些标签跟在后面 -->
+  <n-flex align="center" :size="6" :wrap="false">
+    <TextCopy>{{ props.user.username }}</TextCopy>
+    <n-tag v-if="props.user.isDisabled" type="error" size="small" :bordered="false"> 已禁用 </n-tag>
+    <n-tag
+      v-if="hasRoleTag"
+      :type="getUserRole(props.user.adminType).type"
+      size="small"
+      :bordered="false"
+    >
       {{ getUserRole(props.user.adminType).label }}
     </n-tag>
     <n-tag
-      size="small"
       v-if="
         props.user.adminType === USER_TYPE.STUDENT_ADMIN ||
         props.user.adminType === USER_TYPE.TEACHER_ADMIN
       "
+      size="small"
+      :bordered="false"
     >
-      {{ props.user.problemPermission === PROBLEM_PERMISSION.ALL ? "全部" : "仅自己" }}
+      {{ props.user.problemPermission === PROBLEM_PERMISSION.ALL ? "全部题目" : "自己的题" }}
     </n-tag>
-    <TextCopy>{{ props.user.username }}</TextCopy>
   </n-flex>
 </template>
diff --git a/apps/web/src/admin/user/generate.vue b/apps/web/src/admin/user/generate.vue
index 8b20c32..c985ac6 100644
--- a/apps/web/src/admin/user/generate.vue
+++ b/apps/web/src/admin/user/generate.vue
@@ -1,5 +1,7 @@
 <script setup lang="ts">
 import PageHeader from "admin/components/PageHeader.vue"
+import { classLabel } from "oj/submission/utils"
+import UserName from "shared/components/UserName.vue"
 import { errorMessage } from "utils/api"
 import {
   CLASS_NAME_MAX_DIGITS,
@@ -7,113 +9,447 @@ import {
   CLASS_NAME_MIN_DIGITS,
   CLASS_NAME_MIN_VALUE,
 } from "utils/constants"
-import { importUsers } from "../api"
+import { parseTime } from "utils/functions"
+import { checkUsernames, importUsers } from "../api"
 
+/**
+ * 批量建号（设计稿「后台用户与批量建号」UsGen / UsGenIssue / UsDone）。
+ *
+ * 一年就开学那几天用（2026-09 七批共 440 个），所以要的是「粘进去就看到会建成什么」：
+ * 右边当场列出用户名和密码，同批重名、已经有的账号在建之前就点出来哪一行、怎么改。
+ * 建好之后给「下载名单」和「打印账号条」（一人一张，剪开发下去），原来是一点就自动下载
+ * 一个 CSV，Excel 打开中文还是乱码。新班级后端会顺手加进班级列表。
+ */
 const message = useMessage()
-const prefix = ref(0)
+
+const classNo = ref("")
 const rawInput = ref("")
-const [loading, toggleLoading] = useToggle()
-const users = shallowRef<string[][]>([])
 
-function generateUsers() {
-  if (!rawInput.value || !rawInput.value.trim()) {
-    message.info("请填写相关内容")
-    return false
+const classError = computed(() => {
+  const value = classNo.value.trim()
+  if (!value) return ""
+  const n = Number(value)
+  if (!/^\d+$/.test(value) || n < CLASS_NAME_MIN_VALUE || n > CLASS_NAME_MAX_VALUE) {
+    return `班级号要是 ${CLASS_NAME_MIN_DIGITS}~${CLASS_NAME_MAX_DIGITS} 位数字`
   }
-  // 后端 get_class_name 只认合法位数的班级号，位数不对会整批拒绝导入，
-  // 这里先拦一道，省得填完一屏用户名才被打回来
-  if (
-    prefix.value &&
-    (prefix.value < CLASS_NAME_MIN_VALUE || prefix.value > CLASS_NAME_MAX_VALUE)
-  ) {
-    message.error(
-      `班级号 ${prefix.value} 必须是 ${CLASS_NAME_MIN_DIGITS}~${CLASS_NAME_MAX_DIGITS} 位数字`,
-    )
-    return false
+  return ""
+})
+const prefix = computed(() => (classNo.value.trim() ? `ks${classNo.value.trim()}` : ""))
+
+/** 名单：一行一个，前后和中间的空格都去掉（从表格里复制常带空格），空行不算 */
+const names = computed(() =>
+  rawInput.value
+    .split("\n")
+    .map((line) => line.replace(/\s+/g, ""))
+    .filter(Boolean),
+)
+
+// 每个名字的密码记住，边改名单边看时不会每敲一个字全换一遍
+const passwords = new Map<string, string>()
+function passwordOf(name: string) {
+  let value = passwords.get(name)
+  if (!value) {
+    value = ""
+    for (let j = 0; j < 6; j++) value += "123456789".charAt(Math.floor(Math.random() * 9))
+    passwords.set(name, value)
   }
-  let className = prefix.value ? `ks${prefix.value}` : ""
-  // 占位邮箱必须全站唯一：注册、编辑用户、导入三条路都查重，而且库里同一个邮箱
-  // 出现两次的话，那两个账号在「编辑用户」里保存一次就撞 409，从此改不动。
-  // 原来只按「班级 + 批内序号」拼，同一个班分两批导入必然重号 —— 加一段每批随机的
-  // 后缀错开。这个地址不发给任何人，纯占位。
-  const batch = Math.random().toString(36).slice(2, 8)
-  rawInput.value = rawInput.value.trim()
-  const inputs = rawInput.value.split("\n")
-  users.value = inputs.map((u, i) => {
-    const username = className + u
-    let password = ""
-    for (let j = 0; j < 6; j++) {
-      password += "123456789".charAt(Math.floor(Math.random() * 9))
-    }
-    const realName = u
-    const email = `${className || "user"}.${batch}.${i + 1}@example.com`
-    return [username, password, email, realName]
+  return value
+}
+
+const rows = computed(() =>
+  names.value.map((name) => ({
+    name,
+    username: prefix.value + name,
+    password: passwordOf(prefix.value + name),
+  })),
+)
+
+/** 同批重名：「第 4 行和第 2 行重名」 */
+const duplicates = computed(() => {
+  const first = new Map<string, number>()
+  const result: { line: number; firstLine: number; name: string }[] = []
+  rows.value.forEach((row, i) => {
+    const key = row.username.toLowerCase()
+    const seen = first.get(key)
+    if (seen === undefined) first.set(key, i + 1)
+    else result.push({ line: i + 1, firstLine: seen, name: row.name })
   })
-  return true
-}
+  return result
+})
 
-async function uploadUsers() {
-  try {
-    toggleLoading(true)
-    await importUsers(users.value)
-    message.success("用户已上传成功")
-    // 只导出用户名和密码两列 —— 发给学生的就是这两样，邮箱是占位生成的、
-    // 真名本来就是老师粘进来的那一列，都不用回传
-    const csv = users.value.map(([username, password]) => `${username},${password}`).join("\n")
-    const hiddenElement = document.createElement("a")
-    hiddenElement.href = "data:text/csv;charset=utf-8," + encodeURI(csv)
-    hiddenElement.target = "_blank"
-    hiddenElement.download = prefix.value + ".csv"
-    hiddenElement.click()
-    hiddenElement.remove()
-  } catch (err) {
-    message.error("上传失败：" + errorMessage(err))
-  } finally {
-    toggleLoading(false)
-  }
-}
+// 已经有的账号：停手半秒再去查
+const existing = ref<{ username: string; createTime: string | null }[]>([])
+const checking = ref(false)
+watchDebounced(
+  () => rows.value.map((row) => row.username).join("\n"),
+  async () => {
+    const usernames = [...new Set(rows.value.map((row) => row.username))]
+    if (!usernames.length || classError.value || usernames.length > 500) {
+      existing.value = []
+      return
+    }
+    checking.value = true
+    try {
+      existing.value = (await checkUsernames(usernames)).existing
+    } catch {
+      existing.value = []
+    } finally {
+      checking.value = false
+    }
+  },
+  { debounce: 500, immediate: true },
+)
+
+const tooMany = computed(() => rows.value.length > 500)
+const issueCount = computed(
+  () =>
+    (classError.value ? 1 : 0) +
+    duplicates.value.length +
+    existing.value.length +
+    (tooMany.value ? 1 : 0),
+)
+const canSubmit = computed(
+  () => rows.value.length > 0 && !issueCount.value && !checking.value && !!prefix.value,
+)
+
+// ---------------------------------------------------------------- 建号
+
+const saving = ref(false)
+const done = ref<{ username: string; password: string }[] | null>(null)
+const addedClasses = ref<string[]>([])
 
 async function submit() {
-  const ok = generateUsers()
-  if (ok) {
-    uploadUsers()
+  if (!canSubmit.value) return
+  // 占位邮箱必须全站唯一：注册、编辑用户、导入三条路都查重。每批一段随机后缀错开，
+  // 同一个班分两批导也不会撞。这个地址不发给任何人，纯占位
+  const batch = Math.random().toString(36).slice(2, 8)
+  const payload = rows.value.map((row, i) => [
+    row.username,
+    row.password,
+    `${prefix.value || "user"}.${batch}.${i + 1}@example.com`,
+    row.name,
+  ])
+  saving.value = true
+  try {
+    const res = await importUsers(payload)
+    addedClasses.value = res.addedClasses ?? []
+    done.value = rows.value.map(({ username, password }) => ({ username, password }))
+  } catch (err) {
+    message.error("没建成：" + errorMessage(err))
+  } finally {
+    saving.value = false
   }
 }
+
+function again() {
+  done.value = null
+  rawInput.value = ""
+  addedClasses.value = []
+  passwords.clear()
+}
+
+/** 下载名单：用户名、密码两列。开头带 BOM，Excel 打开中文才不乱码 */
+function download() {
+  if (!done.value) return
+  const csv = "用户名,密码\n" + done.value.map((it) => `${it.username},${it.password}`).join("\n")
+  const link = document.createElement("a")
+  link.href = URL.createObjectURL(new Blob([csv], { type: "text/csv;charset=utf-8" }))
+  link.download = `${prefix.value || "账号"}.csv`
+  link.click()
+  URL.revokeObjectURL(link.href)
+}
+
+/** 打印账号条：一人一张，一页四列，打出来剪开发下去 */
+function printSlips() {
+  if (!done.value) return
+  const escape = (text: string) =>
+    text.replace(
+      /[&<>"]/g,
+      (ch) => ({ "&": "&amp;", "<": "&lt;", ">": "&gt;", '"': "&quot;" })[ch]!,
+    )
+  const slips = done.value
+    .map(
+      (it) =>
+        `<div class="slip"><div class="u">${escape(it.username)}</div><div class="p">密码 ${escape(it.password)}</div></div>`,
+    )
+    .join("")
+  const win = window.open("", "_blank")
+  if (!win) {
+    message.warning("浏览器拦住了新窗口，允许弹出窗口后再点一次")
+    return
+  }
+  win.document.write(`<!doctype html><html lang="zh-CN"><head><meta charset="utf-8"><title>${escape(
+    classLabel(classNo.value.trim()) || "账号条",
+  )}</title><style>
+body{margin:12mm;font-family:"Microsoft YaHei","PingFang SC",sans-serif}
+.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
+.slip{border:1px dashed #999;padding:10px 12px;break-inside:avoid}
+.u{font-size:16px;font-weight:600}.p{font-family:Consolas,monospace;font-size:16px;margin-top:4px}
+</style></head><body><div class="grid">${slips}</div></body></html>`)
+  win.document.close()
+  win.focus()
+  win.print()
+}
 </script>
 
 <template>
-  <PageHeader
-    title="批量导入用户"
-    description="每行一个名字，用户名为 ks + 班级号 + 名字，密码随机生成；导入后会下载账号清单"
-    :back="{ name: 'admin user list' }"
-  />
-  <n-space>
-    <n-flex vertical>
-      <n-flex align="center">
-        <div style="width: 18px; font-size: 1.2rem">ks</div>
-        <n-input-number
-          style="width: 170px"
-          v-model:value="prefix"
-          clearable
-          :max="CLASS_NAME_MAX_VALUE"
-          :min="0"
-          :placeholder="`班级号（${CLASS_NAME_MIN_DIGITS}~${CLASS_NAME_MAX_DIGITS} 位）`"
+  <PageHeader title="批量建号" :back="{ name: 'admin user list' }" />
+
+  <!-- 建好了 -->
+  <div v-if="done" class="done">
+    <div class="done-bar">
+      <b>建好了 {{ done.length }} 个账号</b>
+      <n-text v-if="addedClasses.length" depth="3">
+        {{ addedClasses.map((name) => classLabel(name)).join("、") }}已加进班级列表
+      </n-text>
+      <div class="spacer"></div>
+      <n-button @click="download">下载名单（表格）</n-button>
+      <n-button type="primary" @click="printSlips">打印账号条</n-button>
+      <n-button @click="again">再建一批</n-button>
+    </div>
+    <div class="slips">
+      <div v-for="it in done" :key="it.username" class="slip">
+        <UserName :username="it.username" />
+        <div class="mono">密码 {{ it.password }}</div>
+      </div>
+    </div>
+  </div>
+
+  <div v-else class="layout">
+    <div class="left">
+      <label class="label" for="class-no">班级号</label>
+      <div class="class-row">
+        <span class="ks">ks</span>
+        <n-input
+          v-model:value="classNo"
+          :input-props="{ id: 'class-no', inputmode: 'numeric' }"
+          placeholder="如 2612"
+          style="width: 120px"
         />
-      </n-flex>
+        <span v-if="classNo.trim() && !classError" class="class-name">
+          {{ classLabel(classNo.trim()) }}
+        </span>
+      </div>
+      <label class="label" for="names">
+        名单 <n-text depth="3" class="hint">从表格里整列复制过来，一行一个</n-text>
+      </label>
       <n-input
-        type="textarea"
-        class="inputArea"
-        placeholder="每行一个用户名"
         v-model:value="rawInput"
+        type="textarea"
+        :input-props="{ id: 'names' }"
+        :rows="20"
+        placeholder="一行一个名字"
       />
-      <n-button type="warning" :loading="loading" @click="submit"> 确定导入 </n-button>
-    </n-flex>
-  </n-space>
+    </div>
+
+    <div class="right">
+      <template v-if="rows.length">
+        <div class="head">
+          <b>会建这 {{ rows.length }} 个账号</b>
+          <n-tag v-if="!issueCount && !checking && prefix" type="success" :bordered="false" round>
+            没有重名
+          </n-tag>
+          <n-tag v-if="issueCount" type="warning" :bordered="false" round>
+            有 {{ issueCount }} 处要先改
+          </n-tag>
+        </div>
+
+        <div v-if="issueCount" class="issues">
+          <div v-if="classError">{{ classError }}</div>
+          <div v-if="tooMany">一次最多 500 个，分两批建</div>
+          <div v-for="dup in duplicates" :key="dup.line">
+            第 {{ dup.line }} 行「{{ dup.name }}」和第 {{ dup.firstLine }} 行重名 ——
+            同班同名的，名字后面加个 1、2 区分
+          </div>
+          <div v-for="it in existing" :key="it.username">
+            {{ it.username }} 已经有这个账号了<template v-if="it.createTime"
+              >（{{ parseTime(it.createTime, "YYYY-MM-DD") }} 建的）</template
+            >
+            —— 删掉这一行，或者换个名字
+          </div>
+        </div>
+
+        <div class="preview">
+          <table>
+            <thead>
+              <tr>
+                <th></th>
+                <th>用户名</th>
+                <th>密码</th>
+              </tr>
+            </thead>
+            <tbody>
+              <tr v-for="(row, i) in rows" :key="i">
+                <td class="n">{{ i + 1 }}</td>
+                <td><UserName :username="row.username" /></td>
+                <td class="mono">{{ row.password }}</td>
+              </tr>
+            </tbody>
+          </table>
+        </div>
+
+        <div>
+          <n-button
+            type="primary"
+            size="large"
+            :disabled="!canSubmit"
+            :loading="saving || checking"
+            @click="submit"
+          >
+            建好这 {{ rows.length }} 个账号
+          </n-button>
+          <n-text v-if="!prefix" depth="3" class="hint" style="margin-left: 12px">
+            先填班级号
+          </n-text>
+        </div>
+      </template>
+      <n-empty v-else description="左边粘进名单，这里就列出会建成的账号" style="margin-top: 80px" />
+    </div>
+  </div>
 </template>
 
 <style scoped>
-.inputArea {
-  width: 200px;
-  height: 500px;
+.layout {
+  display: flex;
+  gap: 24px;
+  align-items: flex-start;
+}
+
+.left {
+  width: 330px;
+  flex: none;
+  display: flex;
+  flex-direction: column;
+  gap: 10px;
+}
+
+.label {
+  font-size: 14px;
+  font-weight: 600;
+}
+
+.hint {
+  font-size: 13px;
+  font-weight: 400;
+}
+
+.class-row {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+}
+
+.ks {
+  font-size: 18px;
+  opacity: 0.6;
+}
+
+.class-name {
+  font-size: 15px;
+}
+
+.right {
+  flex: 1 1 auto;
+  min-width: 0;
+  display: flex;
+  flex-direction: column;
+  gap: 12px;
+}
+
+.head {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  font-size: 15px;
+}
+
+.issues {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+  padding: 12px 14px;
+  border-radius: 8px;
+  border: 1px solid rgba(240, 160, 32, 0.45);
+  background: rgba(240, 160, 32, 0.08);
+  font-size: 14px;
+}
+
+.preview {
+  max-height: 520px;
+  overflow: auto;
+  border: 1px solid rgba(128, 128, 128, 0.2);
+  border-radius: 8px;
+  padding: 4px 12px;
+}
+
+.preview table {
+  border-collapse: collapse;
+  width: 100%;
+  font-size: 14px;
+}
+
+.preview th {
+  font-weight: 400;
+  font-size: 13px;
+  opacity: 0.6;
+  text-align: left;
+  padding: 8px;
+}
+
+.preview td {
+  height: 38px;
+  padding: 0 8px;
+  border-top: 1px solid rgba(128, 128, 128, 0.12);
+  white-space: nowrap;
+}
+
+.preview .n {
+  width: 32px;
+  opacity: 0.5;
+  font-variant-numeric: tabular-nums;
+}
+
+.mono {
+  font-family: Consolas, Monaco, monospace;
+  font-variant-numeric: tabular-nums;
+}
+
+.done {
+  display: flex;
+  flex-direction: column;
+  gap: 16px;
+}
+
+.done-bar {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  padding: 14px 16px;
+  border-radius: 8px;
+  border: 1px solid rgba(24, 160, 88, 0.35);
+  background: rgba(24, 160, 88, 0.06);
+  white-space: nowrap;
+}
+
+.done-bar b {
+  font-size: 16px;
+}
+
+.spacer {
+  flex: 1 1 auto;
+}
+
+.slips {
+  display: grid;
+  grid-template-columns: repeat(4, minmax(0, 1fr));
+  gap: 8px;
+}
+
+.slip {
+  border: 1px dashed rgba(128, 128, 128, 0.5);
+  border-radius: 4px;
+  padding: 8px 10px;
+  font-size: 14px;
+  line-height: 22px;
 }
 </style>
diff --git a/apps/web/src/admin/user/list.vue b/apps/web/src/admin/user/list.vue
index 6126951..0f73064 100644
--- a/apps/web/src/admin/user/list.vue
+++ b/apps/web/src/admin/user/list.vue
@@ -1,7 +1,7 @@
 <script setup lang="ts">
 import PageHeader from "admin/components/PageHeader.vue"
 import { errorMessage } from "utils/api"
-import { DataTableRowKey, NFlex, NTag, SelectOption } from "naive-ui"
+import { DataTableRowKey, SelectOption, useThemeVars } from "naive-ui"
 import Pagination from "shared/components/Pagination.vue"
 import { usePagination } from "shared/composables/pagination"
 import { parseTime } from "utils/functions"
@@ -12,14 +12,24 @@ import UserNameCell from "./components/UserNameCell.vue"
 import PasswordCell from "./components/PasswordCell.vue"
 import { PROBLEM_PERMISSION, USER_TYPE } from "utils/constants"
 import { useRouteQuery } from "@vueuse/router"
-import TextCopy from "shared/components/TextCopy.vue"
+import { NO_CLASS } from "@oj2/contract"
+import { classLabel, groupClassOptions } from "oj/submission/utils"
+import { useConfigStore } from "shared/store/config"
 
+/**
+ * 后台用户列表（设计稿「后台用户与批量建号」UsList）。老师进来多半是三件事：学生忘了密码、
+ * 看一个班的名单、开学建号。所以加了班级筛选，一行只摆 用户名 / 班级 / 密码 / 上次登录 / 建号，
+ * 「重置密码」常驻、其余收进 ⋯。ID、真名（名字就在用户名里）、占位邮箱不再单列，搜索照样搜得到
+ */
 const message = useMessage()
+const theme = useThemeVars()
+const configStore = useConfigStore()
 
 interface UserQuery {
   keyword: string
   type: string
   orderBy: string
+  className: string
 }
 
 // 使用分页 composable
@@ -27,21 +37,31 @@ const { query, clearQuery } = usePagination<UserQuery>({
   keyword: useRouteQuery("keyword", "").value,
   type: useRouteQuery("type", "").value,
   orderBy: useRouteQuery("orderBy", "").value,
+  className: useRouteQuery("className", "").value,
 })
 
+const classOptions = computed(() => [
+  { label: "全部班级", value: "" },
+  ...groupClassOptions(configStore.config?.classList ?? []),
+  { label: classLabel(NO_CLASS), value: NO_CLASS },
+])
+const neverLoggedIn = ref(0)
+
 const total = ref(0)
 const users = ref<AdminUserForm[]>([])
 const userEditing = ref<AdminUserForm | null>(null)
 
 const adminOptions = [
-  { label: "全部用户", value: "" },
+  { label: "全部角色", value: "" },
+  { label: "学生", value: USER_TYPE.REGULAR_USER },
   { label: "学生管理员", value: USER_TYPE.STUDENT_ADMIN },
   { label: "教师管理员", value: USER_TYPE.TEACHER_ADMIN },
   { label: "超级管理员", value: USER_TYPE.SUPER_ADMIN },
 ]
 
 const sortOptions = [
-  { label: "默认排序", value: "" },
+  { label: "最近建号", value: "" },
+  { label: "按用户名", value: "username" },
   { label: "最近登录", value: "-last_login" },
   { label: "在线优先", value: "-online" },
 ]
@@ -54,20 +74,41 @@ const userIDs = ref<DataTableRowKey[]>([])
 
 const rowKey = (row: AdminUserForm) => row.id
 
+/** 上次登录：今天的写「今天 13:02」，在线的前面一个绿点；今年的写到月日；从没登录的写出来 */
+function lastLoginText(row: AdminUserForm) {
+  if (!row.lastLogin) return h("span", { class: "muted" }, "从没登录")
+  const day = parseTime(row.lastLogin, "YYYY-MM-DD")
+  const today = parseTime(new Date().toISOString(), "YYYY-MM-DD")
+  const text =
+    day === today
+      ? `今天 ${parseTime(row.lastLogin, "HH:mm")}`
+      : day.slice(0, 4) === today.slice(0, 4)
+        ? parseTime(row.lastLogin, "MM-DD HH:mm")
+        : day
+  return h("span", { class: "num", title: parseTime(row.lastLogin, "YYYY-MM-DD HH:mm:ss") }, [
+    row.isOnline ? h("span", { class: "online", title: "在线" }) : null,
+    text,
+  ])
+}
+
 const columns: DataTableColumn<AdminUserForm>[] = [
   { type: "selection" },
-  { title: "ID", key: "id", width: 80 },
   {
     title: "用户名",
     key: "username",
-    width: 220,
+    minWidth: 200,
     render: (row) => h(UserNameCell, { user: row }),
   },
   {
-    // 显示出来的密码后面还跟着「隐藏」按钮，150 挤得下点点、挤不下密码
+    title: "班级",
+    key: "className",
+    width: 130,
+    render: (row) => h("span", { class: "muted" }, row.className ? classLabel(row.className) : "—"),
+  },
+  {
     title: "密码",
     key: "raw_password",
-    width: 180,
+    width: 150,
     render: (row) =>
       h(PasswordCell, {
         user: row,
@@ -77,36 +118,22 @@ const columns: DataTableColumn<AdminUserForm>[] = [
         },
       }),
   },
+  { title: "上次登录", key: "last_login", width: 150, render: lastLoginText },
   {
-    title: "创建时间",
+    title: "建号",
     key: "create_time",
-    width: 200,
-    render: (row) => (row.createTime ? parseTime(row.createTime, "YYYY-MM-DD HH:mm:ss") : ""),
-  },
-  {
-    title: "上次登录",
-    key: "last_login",
-    width: 240,
-    // 在线是 5 分钟内有过活动（后端 auth/presence.ts），不是「有会话」——
-    // 会话能留 7 天。上次登录时间照旧显示，在线的人前面多一个标记
+    width: 110,
     render: (row) =>
-      h(NFlex, { align: "center", size: "small" }, () => [
-        row.isOnline ? h(NTag, { type: "success", size: "small" }, () => "在线") : null,
-        row.lastLogin ? parseTime(row.lastLogin, "YYYY-MM-DD HH:mm:ss") : "从未登录",
-      ]),
+      h(
+        "span",
+        { class: "num muted" },
+        row.createTime ? parseTime(row.createTime, "YYYY-MM-DD") : "",
+      ),
   },
-  {
-    title: "真名",
-    key: "real_name",
-    width: 100,
-    render: (row) => h(TextCopy, () => row.realName),
-  },
-  { title: "邮箱", key: "email", width: 260 },
   {
     key: "actions",
-    title: "选项",
-    width: 280,
-    fixed: "right",
+    title: "",
+    width: 130,
     render: (row) =>
       h(Actions, {
         user: row,
@@ -136,8 +163,16 @@ const teacherPermissionOptions = problemPermissionOptions.slice(1)
 async function listUsers() {
   if (query.page < 1) query.page = 1
   const offset = (query.page - 1) * query.limit
-  const res = await getUserList(offset, query.limit, query.type, query.keyword, query.orderBy)
+  const res = await getUserList(
+    offset,
+    query.limit,
+    query.type,
+    query.keyword,
+    query.orderBy,
+    query.className,
+  )
   total.value = res.total
+  neverLoggedIn.value = res.neverLoggedIn
   users.value = res.results
   revealedPasswords.value.clear()
 }
@@ -146,8 +181,14 @@ function chooseUsers(rowKeys: DataTableRowKey[]) {
   userIDs.value = rowKeys
 }
 
-async function onDeleteUsers(userIDs: DataTableRowKey[] | Ref<number[]>) {
-  await deleteUsers(toRaw(userIDs) as number[])
+async function onDeleteUsers(ids: DataTableRowKey[] | Ref<number[]>) {
+  try {
+    await deleteUsers(toRaw(ids) as number[])
+    message.success("删掉了")
+    userIDs.value = []
+  } catch (err) {
+    message.error(errorMessage(err))
+  }
   listUsers()
 }
 
@@ -252,7 +293,7 @@ onMounted(listUsers)
 watchDebounced(() => query.keyword, listUsers, { debounce: 500, maxWait: 1000 })
 
 // 监听其他查询条件变化
-watch(() => [query.page, query.limit, query.type, query.orderBy], listUsers)
+watch(() => [query.page, query.limit, query.type, query.orderBy, query.className], listUsers)
 </script>
 
 <template>
@@ -262,38 +303,51 @@ watch(() => [query.page, query.limit, query.type, query.orderBy], listUsers)
         <template #trigger>
           <n-button type="error" secondary>删除选中（{{ userIDs.length }}）</n-button>
         </template>
-        确定删除选中的用户吗？删除后无法恢复！
+        删掉就找不回来了。交过题的账号删不掉，那种请改为禁用。
       </n-popconfirm>
-      <n-button @click="$router.push({ name: 'admin user generate' })">批量导入</n-button>
-      <n-button type="primary" @click="createNewUser">新建用户</n-button>
+      <n-button @click="createNewUser">新建一个</n-button>
+      <n-button type="primary" @click="$router.push({ name: 'admin user generate' })">
+        批量建号
+      </n-button>
     </template>
     <template #filters>
       <n-input
         style="width: 220px"
         v-model:value="query.keyword"
-        placeholder="用户名 / 真名 / 邮箱"
+        placeholder="用户名或名字"
         clearable
         @clear="clearQuery"
       />
+      <n-select
+        v-model:value="query.className"
+        :options="classOptions"
+        filterable
+        aria-label="班级"
+        style="width: 150px"
+      />
       <n-select
         v-model:value="query.type"
         :options="adminOptions"
-        placeholder="选择用户类型"
+        aria-label="角色"
         style="width: 120px"
       />
       <n-select
         v-model:value="query.orderBy"
         :options="sortOptions"
-        placeholder="排序方式"
+        aria-label="排序"
         style="width: 120px"
       />
+      <n-text depth="3">
+        {{ total }} 人<template v-if="neverLoggedIn"> · {{ neverLoggedIn }} 人从没登录</template>
+      </n-text>
     </template>
   </PageHeader>
   <n-data-table
+    class="user-table"
     :data="users"
     :columns="columns"
-    striped
     :row-key="rowKey"
+    :checked-row-keys="userIDs"
     @update:checked-row-keys="chooseUsers"
   />
   <Pagination :total="total" v-model:limit="query.limit" v-model:page="query.page" />
@@ -357,3 +411,24 @@ watch(() => [query.page, query.limit, query.type, query.orderBy], listUsers)
     </n-form>
   </n-modal>
 </template>
+
+<style scoped>
+.user-table :deep(.muted) {
+  color: v-bind("theme.textColor3");
+}
+
+.user-table :deep(.num) {
+  font-variant-numeric: tabular-nums;
+  white-space: nowrap;
+}
+
+.user-table :deep(.online) {
+  display: inline-block;
+  width: 7px;
+  height: 7px;
+  margin-right: 6px;
+  border-radius: 50%;
+  background: v-bind("theme.successColor");
+  vertical-align: 1px;
+}
+</style>