feat: 改版阶段 3：老师按班级 × 任务批改，学生看本班同学作品
老师 - 新的“批改”页（教学默认页）：左边班级 + 任务列表和完成进度，中间作品墙 （每人最新一版、未交 / 我未评 / 分数），右侧详情面板：各版本、提示词链、打分、 加入课上展示、加入作品展；J/K 切换学生，1–5 打分，P 课上展示 - “开始讲评”全屏依次播放课上展示的作品；成绩册点分数打开同一个详情面板 - 四色标记和“一键清除全站标记”去掉，flag 只用 present（课上展示）；全部提交只给超管 学生 - “同学作品”：只看本班、自己交过这道题才开放，打分前匿名（服务端不返回作者） - 学生的提交列表只有自己的；别人的提交和提示词链只有本班同学交过同一题、或进了作品展才能看 - 随机互评不再返回作者，打完分由 PUT /:id/score 返回 服务端新增 routes/review.ts（/submission/review：options、progress、class、peers）， 查询走 slim 覆盖索引 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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import { Hono } from "hono"
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import { z } from "zod"
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import { all, get, iso, uuidOut } from "../db"
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import { isStaff, requireUser, type User } from "../auth"
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import { HttpError, intParam, orNotFound, query, type Env } from "../http"
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// 老师按“班级 × 任务”批改，学生看本班同学的作品。挂在 /submission/review 下
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const router = new Hono<Env>()
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function requireStaff(user: User) {
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if (!isStaff(user)) throw new HttpError(403, "没有权限")
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}
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// 和成绩册一致：班里的学生包括当助教的 admin
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const CLASS_MEMBERS = `SELECT id FROM account_user
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WHERE classname = $classname AND role IN ('normal', 'admin') AND is_active = 1`
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// 每个人在这个任务上最新的一次提交，以及提交了几次。
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// 先只在 slim 覆盖索引上找，再按 rowid 读这几行的完整内容（代码是宽列，见 CLAUDE.md）
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function latestByUser(taskId: number, members: string, params: Record<string, unknown>) {
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const rows = all<{ rid: number; user_id: number; created: string }>(
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`SELECT s.rowid AS rid, s.user_id, s.created FROM submission_submission s
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WHERE s.task_id = $task_id AND s.user_id IN (${members})`,
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{ task_id: taskId, ...params },
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)
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const latest = new Map<number, { rid: number; created: string; count: number }>()
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for (const r of rows) {
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const cur = latest.get(r.user_id)
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if (!cur) latest.set(r.user_id, { rid: r.rid, created: r.created, count: 1 })
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else {
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cur.count++
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if (r.created > cur.created) Object.assign(cur, { rid: r.rid, created: r.created })
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}
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}
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return latest
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}
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function loadRows(rids: number[], me: number) {
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if (!rids.length) return new Map<number, any>()
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const rows = all(
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`SELECT s.rowid AS rid, s.id, s.user_id, s.score, s.html, s.css, s.js, s.flag,
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s.view_count, s.created,
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(SELECT r.score FROM submission_rating r WHERE r.user_id = $me AND r.submission_id = s.id) AS my_score,
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(SELECT COUNT(*) FROM submission_rating r WHERE r.submission_id = s.id) AS rating_count
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FROM submission_submission s WHERE s.rowid IN (SELECT value FROM json_each($rids))`,
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{ rids: JSON.stringify(rids), me },
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)
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return new Map(rows.map((r) => [r.user_id as number, r]))
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}
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// 班级列表和可批改的任务（教程、挑战）
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router.get("/options", (c) => {
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requireStaff(requireUser(c))
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const classes = all<{ classname: string }>(
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`SELECT DISTINCT classname FROM account_user
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WHERE role IN ('normal', 'admin') AND classname != '' ORDER BY classname`,
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).map((r) => r.classname)
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const tasks = all(
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`SELECT id, task_type, display, title, is_public FROM task_task
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WHERE task_type IN ('tutorial', 'challenge')
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ORDER BY task_type = 'challenge', display`,
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).map((t) => ({ ...t, is_public: !!t.is_public }))
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return c.json({ classes, tasks })
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})
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// 一个班每个任务交了几个人
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router.get("/progress", (c) => {
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requireStaff(requireUser(c))
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const { classname } = query(c, z.object({ classname: z.string().min(1) }))
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const studentCount = get<{ n: number }>(
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`SELECT COUNT(*) AS n FROM (${CLASS_MEMBERS})`,
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{ classname },
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)!.n
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const rows = all<{ task_id: number; n: number }>(
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`SELECT s.task_id, COUNT(DISTINCT s.user_id) AS n FROM submission_submission s
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WHERE s.user_id IN (${CLASS_MEMBERS}) GROUP BY s.task_id`,
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{ classname },
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)
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return c.json({
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student_count: studentCount,
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submitted: Object.fromEntries(rows.map((r) => [r.task_id, r.n])),
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})
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})
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// 作品墙：班里每个学生在这个任务上最新的一次提交（没交的 submission 为 null）
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router.get("/class", (c) => {
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const user = requireUser(c)
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requireStaff(user)
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const q = query(c, z.object({ classname: z.string().min(1), task_id: z.coerce.number().int() }))
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orNotFound(get(`SELECT 1 FROM task_task WHERE id = $id`, { id: q.task_id }), "任务不存在")
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const students = all<{ id: number; username: string }>(
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`SELECT id, username FROM account_user
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WHERE classname = $classname AND role IN ('normal', 'admin') AND is_active = 1
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ORDER BY username, id`,
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{ classname: q.classname },
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)
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const latest = latestByUser(q.task_id, CLASS_MEMBERS, { classname: q.classname })
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const rows = loadRows([...latest.values()].map((l) => l.rid), user.id)
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return c.json(
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students.map((s) => {
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const r = rows.get(s.id)
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return {
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user_id: s.id,
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username: s.username,
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submission: r
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? {
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id: uuidOut(r.id),
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score: r.score,
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my_score: r.my_score || 0,
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rating_count: r.rating_count,
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flag: r.flag,
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view_count: r.view_count,
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submit_count: latest.get(s.id)!.count,
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created: iso(r.created),
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html: r.html,
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css: r.css,
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js: r.js,
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}
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: null,
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}
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}),
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)
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})
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// 学生看本班同学在这道题上的作品：自己交过才开放；自己打分之前不显示作者和得分
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router.get("/peers/:task_id", (c) => {
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const user = requireUser(c)
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const taskId = intParam(c, "task_id")
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orNotFound(get(`SELECT 1 FROM task_task WHERE id = $id`, { id: taskId }), "任务不存在")
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const submitted = get(
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`SELECT 1 FROM submission_submission WHERE user_id = $me AND task_id = $task_id LIMIT 1`,
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{ me: user.id, task_id: taskId },
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)
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if (!submitted || !user.classname) return c.json({ locked: true, items: [] })
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const members = `SELECT id FROM account_user
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WHERE classname = $classname AND role = 'normal' AND is_active = 1 AND id != $me`
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const params = { classname: user.classname, me: user.id }
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const latest = latestByUser(taskId, members, params)
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const rows = loadRows([...latest.values()].map((l) => l.rid), user.id)
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const names = new Map(
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all<{ id: number; username: string }>(`SELECT id, username FROM account_user WHERE id IN (${members})`, params).map(
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(u) => [u.id, u.username],
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),
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)
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const items = [...rows.values()]
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.sort((a, b) => (a.created < b.created ? 1 : -1))
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.map((r) => {
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const rated = (r.my_score || 0) > 0
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return {
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id: uuidOut(r.id),
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username: rated ? names.get(r.user_id) : null,
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score: rated ? r.score : null,
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my_score: r.my_score || 0,
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created: iso(r.created),
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html: r.html,
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css: r.css,
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js: r.js,
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}
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})
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return c.json({ locked: false, items })
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})
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export default router
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