feat: 班级小助手 阶段1-3（monorepo + 后端 REST/Socket.IO + Web 管理端）
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/**
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* 种子数据：pnpm db:seed
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*
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* 会清空业务表后重建一套完整演示数据：
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* 1 管理员 / 2 教师 / 3 个班级 / 15 名学生 / 课程 / 课表 / 作业 / 通知 / 成绩
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*
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* 演示账号（密码见文件末尾打印结果）：
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* admin / admin123 - 系统管理员
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* teacher1 / teacher123 - 张老师（高一(1)班、高二(3)班班主任）
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* teacher2 / teacher123 - 李老师（高一(2)班班主任，高二(3)班协作教师）
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* student01..student15 / student123
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*/
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import { disconnectPrisma, prisma } from '../src/lib/db.js';
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import { logger } from '../src/lib/logger.js';
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import { hashPassword } from '../src/lib/password.js';
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import { MAX_TERM_WEEK } from '../src/lib/term.js';
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const STUDENT_NAMES = [
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'王小明',
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'李思远',
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'张欣怡',
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'刘子涵',
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'陈嘉豪',
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'杨雨欣',
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'赵依然',
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'黄浩然',
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'周思彤',
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'吴俊杰',
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'徐若曦',
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'孙晨曦',
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'马文博',
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'朱佳琪',
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'胡一鸣',
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];
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const COURSE_NAMES = ['语文', '数学', '英语', '物理', '化学'];
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/** 每天的上课节次模板（dayOfWeek 1-5） */
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const PERIOD_TEMPLATE = [
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{ startTime: '08:00', endTime: '08:45' },
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{ startTime: '08:55', endTime: '09:40' },
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{ startTime: '10:00', endTime: '10:45' },
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{ startTime: '10:55', endTime: '11:40' },
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{ startTime: '14:00', endTime: '14:45' },
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{ startTime: '14:55', endTime: '15:40' },
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];
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const CLASS_ROOMS = ['教学楼 A301', '教学楼 A302', '实验楼 B205'];
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/** 固定种子的伪随机数，保证每次 seed 结果一致 */
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function createRandom(seed: number): () => number {
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let state = seed;
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return () => {
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state = (state * 1103515245 + 12345) % 2147483648;
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return state / 2147483648;
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};
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}
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async function resetDatabase(): Promise<void> {
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// 顺序敏感：先删子表，再删主表
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await prisma.grade.deleteMany();
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await prisma.homeworkStatus.deleteMany();
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await prisma.homework.deleteMany();
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await prisma.notificationRead.deleteMany();
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await prisma.notification.deleteMany();
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await prisma.schedule.deleteMany();
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await prisma.course.deleteMany();
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await prisma.enrollment.deleteMany();
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await prisma.classTeacher.deleteMany();
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await prisma.user.updateMany({ data: { classId: null } });
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await prisma.user.deleteMany();
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await prisma.class.deleteMany();
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}
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async function main(): Promise<void> {
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logger.info('开始写入种子数据...');
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if (process.env.NODE_ENV === 'production') {
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throw new Error('拒绝在生产环境执行 seed（NODE_ENV=production）');
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}
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await resetDatabase();
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const random = createRandom(20260901);
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// 同一角色共用密码，只需各哈希一次
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const [adminHash, teacherHash, studentHash] = await Promise.all([
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hashPassword('admin123'),
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hashPassword('teacher123'),
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hashPassword('student123'),
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]);
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const admin = await prisma.user.create({
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data: { username: 'admin', name: '系统管理员', role: 'ADMIN', passwordHash: adminHash },
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});
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const teacher1 = await prisma.user.create({
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data: { username: 'teacher1', name: '张老师', role: 'TEACHER', passwordHash: teacherHash },
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});
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const teacher2 = await prisma.user.create({
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data: { username: 'teacher2', name: '李老师', role: 'TEACHER', passwordHash: teacherHash },
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});
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const classSeeds = [
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{ name: '高一(1)班', grade: '高一', teacherId: teacher1.id },
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{ name: '高一(2)班', grade: '高一', teacherId: teacher2.id },
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{ name: '高二(3)班', grade: '高二', teacherId: teacher1.id },
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];
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const classes = [];
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for (const [index, seed] of classSeeds.entries()) {
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const created = await prisma.class.create({
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data: { name: seed.name, grade: seed.grade, teacherId: seed.teacherId },
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});
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classes.push({ ...created, room: CLASS_ROOMS[index] ?? '教学楼 A101' });
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}
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// 高二(3)班：李老师作为协作教师
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await prisma.classTeacher.create({
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data: { classId: classes[2]!.id, teacherId: teacher2.id },
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});
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// ---------------------------------------------------------------- 学生
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const students = [];
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for (let index = 0; index < STUDENT_NAMES.length; index += 1) {
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const classIndex = Math.floor(index / 5);
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const targetClass = classes[classIndex] ?? classes[0]!;
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const student = await prisma.user.create({
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data: {
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username: `student${String(index + 1).padStart(2, '0')}`,
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name: STUDENT_NAMES[index] ?? `学生${index + 1}`,
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role: 'STUDENT',
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classId: targetClass.id,
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passwordHash: studentHash,
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},
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});
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students.push(student);
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await prisma.enrollment.create({ data: { userId: student.id, classId: targetClass.id } });
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}
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// ---------------------------------------------------------------- 课程
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const coursesByClass = new Map<string, { id: string; name: string }[]>();
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for (const targetClass of classes) {
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const created = [];
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for (const courseName of COURSE_NAMES) {
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const course = await prisma.course.create({
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data: { name: courseName, classId: targetClass.id, teacherId: targetClass.teacherId },
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});
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created.push({ id: course.id, name: course.name });
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}
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coursesByClass.set(targetClass.id, created);
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}
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// ---------------------------------------------------------------- 课表
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for (const targetClass of classes) {
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const classCourses = coursesByClass.get(targetClass.id) ?? [];
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for (let dayOfWeek = 1; dayOfWeek <= 5; dayOfWeek += 1) {
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for (const [periodIndex, period] of PERIOD_TEMPLATE.entries()) {
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const course = classCourses[(dayOfWeek + periodIndex) % classCourses.length];
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if (!course) continue;
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// 前 2 节限制在第 1 周（演示按周筛选）
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const onlyFirstWeek = dayOfWeek === 1 && periodIndex === 0;
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await prisma.schedule.create({
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data: {
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classId: targetClass.id,
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courseId: course.id,
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dayOfWeek,
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startTime: period.startTime,
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endTime: period.endTime,
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location: targetClass.room,
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weekStart: 1,
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weekEnd: onlyFirstWeek ? 1 : MAX_TERM_WEEK,
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},
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});
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}
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}
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}
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// ---------------------------------------------------------------- 作业
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const now = Date.now();
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const day = 86_400_000;
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const homeworkSeeds = [
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{
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title: '《劝学》全文背诵',
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content: '背诵《劝学》并录制音频上传到班级群，注意断句。',
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dueInDays: 3,
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courseIndex: 0,
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},
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{
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title: '数学必修一 3.2 习题',
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content: '完成课本 P78 习题 3.2 全部题目，第 12 题选做。',
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dueInDays: 1,
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courseIndex: 1,
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},
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{
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title: '英语周记一篇',
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content: '以"My School Life"为题写一篇 150 词左右的英语周记。',
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dueInDays: 5,
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courseIndex: 2,
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},
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{
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title: '物理实验报告',
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content: '整理"探究匀变速直线运动"实验数据，撰写实验报告。',
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dueInDays: -2,
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courseIndex: 3,
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},
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{
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title: '化学方程式默写',
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content: '默写第一至第三章全部化学方程式，家长签字。',
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dueInDays: -1,
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courseIndex: 4,
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},
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];
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const homeworks = [];
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for (const targetClass of classes) {
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const classCourses = coursesByClass.get(targetClass.id) ?? [];
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for (const seed of homeworkSeeds) {
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const course = classCourses[seed.courseIndex % classCourses.length];
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const homework = await prisma.homework.create({
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data: {
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classId: targetClass.id,
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courseId: course?.id ?? null,
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title: `${seed.title}`,
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content: seed.content,
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attachmentUrl:
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seed.courseIndex % 2 === 0 ? 'https://example.com/classhelper/homework-sample.pdf' : null,
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dueAt: new Date(now + seed.dueInDays * day),
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createdBy: targetClass.teacherId,
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},
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});
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homeworks.push(homework);
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}
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}
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// 部分学生已完成部分作业
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const studentsByClass = new Map<string, typeof students>();
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for (const student of students) {
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if (!student.classId) continue;
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const bucket = studentsByClass.get(student.classId) ?? [];
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bucket.push(student);
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studentsByClass.set(student.classId, bucket);
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}
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for (const homework of homeworks) {
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const classmates = studentsByClass.get(homework.classId) ?? [];
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for (const [index, student] of classmates.entries()) {
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const completed = (index + homework.title.length) % 3 !== 0;
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if (!completed && index % 2 === 1) continue;
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await prisma.homeworkStatus.create({
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data: { homeworkId: homework.id, userId: student.id, completed },
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});
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}
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}
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// ---------------------------------------------------------------- 通知
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const notificationSeeds = [
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{
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title: '关于期中考试安排的通知',
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content: '期中考试定于下月 8 日至 10 日进行，请同学们提前复习，考试安排详见班级公告栏。',
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priority: 'HIGH',
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daysAgo: 0.2,
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},
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{
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title: '明天下午临时调课',
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content: '因教师外出教研，明天下午第 5、6 节课与周五下午对调，请相互转告。',
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priority: 'URGENT',
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daysAgo: 0.6,
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},
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{
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title: '校运动会报名开始',
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content: '本届校运动会开始报名，每人限报 2 个项目，请到体育委员处登记。',
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priority: 'NORMAL',
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daysAgo: 2,
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},
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{
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title: '教室卫生值日表更新',
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content: '新的值日表已张贴在教室后墙，请各小组按时完成值日。',
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priority: 'LOW',
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daysAgo: 4,
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},
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];
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for (const targetClass of classes) {
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for (const seed of notificationSeeds) {
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const notification = await prisma.notification.create({
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data: {
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classId: targetClass.id,
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title: seed.title,
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content: seed.content,
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priority: seed.priority,
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createdBy: targetClass.teacherId,
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createdAt: new Date(now - seed.daysAgo * day),
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},
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});
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// 第一条通知：部分学生已读，用于演示未读红点
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if (seed.priority === 'LOW') {
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const classmates = (studentsByClass.get(targetClass.id) ?? []).slice(0, 3);
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for (const student of classmates) {
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await prisma.notificationRead.create({
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data: { notificationId: notification.id, userId: student.id },
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});
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}
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}
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}
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}
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// ---------------------------------------------------------------- 成绩
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const examNames = ['第一次月考', '期中考试'];
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for (const targetClass of classes) {
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const classCourses = coursesByClass.get(targetClass.id) ?? [];
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const classmates = studentsByClass.get(targetClass.id) ?? [];
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for (const [examIndex, examName] of examNames.entries()) {
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for (const course of classCourses.slice(0, 3)) {
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for (const student of classmates) {
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const base = 60 + random() * 38;
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const score = Math.round(Math.min(100, Math.max(35, base - examIndex * 2)));
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await prisma.grade.create({
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data: {
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classId: targetClass.id,
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courseId: course.id,
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userId: student.id,
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examName,
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score,
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totalScore: 100,
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publishedAt: new Date(now - (examIndex + 1) * 6 * day),
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},
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});
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}
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}
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}
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}
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const counts = {
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用户: await prisma.user.count(),
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班级: await prisma.class.count(),
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课程: await prisma.course.count(),
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课表: await prisma.schedule.count(),
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作业: await prisma.homework.count(),
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通知: await prisma.notification.count(),
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成绩: await prisma.grade.count(),
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};
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logger.info('种子数据写入完成', counts);
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console.log('\n================ 演示账号 ================');
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console.log(`管理员 admin / admin123 (${admin.name})`);
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console.log(`教师 teacher1 / teacher123 (${teacher1.name} · 高一(1)班、高二(3)班)`);
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console.log(`教师 teacher2 / teacher123 (${teacher2.name} · 高一(2)班、高二(3)班协作)`);
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console.log('学生 student01 / student123 (高一(1)班)');
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console.log('学生 student06 / student123 (高一(2)班)');
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console.log('学生 student11 / student123 (高二(3)班)');
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console.log('学生 student15 / student123 (高二(3)班)');
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console.log('==========================================\n');
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}
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main()
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.catch((error) => {
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logger.error('种子数据写入失败', error);
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process.exitCode = 1;
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})
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.finally(async () => {
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await disconnectPrisma();
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});
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Block a user