feat: 班级小助手 阶段1-3（monorepo + 后端 REST/Socket.IO + Web 管理端）
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import type { NotificationPriority, UserRole } from './types.js';
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/** API 前缀 */
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export const API_PREFIX = '/api';
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/** REST 路径集中管理，避免前端散落硬编码字符串 */
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export const API_PATHS = {
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auth: {
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login: '/auth/login',
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logout: '/auth/logout',
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me: '/auth/me',
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changePassword: '/auth/password',
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},
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classes: '/classes',
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courses: '/courses',
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schedules: '/schedules',
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homeworks: '/homeworks',
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notifications: '/notifications',
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grades: '/grades',
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students: '/students',
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teachers: '/teachers',
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dashboard: '/dashboard/summary',
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} as const;
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/** 用户角色 */
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export const USER_ROLES: readonly UserRole[] = ['ADMIN', 'TEACHER', 'STUDENT'];
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export const ROLE_LABELS: Record<UserRole, string> = {
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ADMIN: '系统管理员',
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TEACHER: '教师',
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STUDENT: '学生',
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};
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/** 通知优先级 */
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export const NOTIFICATION_PRIORITIES: readonly NotificationPriority[] = ['LOW', 'NORMAL', 'HIGH', 'URGENT'];
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export const PRIORITY_LABELS: Record<NotificationPriority, string> = {
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LOW: '低',
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NORMAL: '普通',
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HIGH: '重要',
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URGENT: '紧急',
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};
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/** Element Plus tag 类型，三端统一文案与配色 */
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export const PRIORITY_TAG_TYPES: Record<NotificationPriority, 'info' | 'primary' | 'warning' | 'danger'> = {
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LOW: 'info',
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NORMAL: 'primary',
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HIGH: 'warning',
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URGENT: 'danger',
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};
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/** 星期：1=周一 ... 7=周日（与数据库 dayOfWeek 一致） */
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export const WEEKDAY_LABELS: Record<number, string> = {
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1: '周一',
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2: '周二',
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3: '周三',
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4: '周四',
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5: '周五',
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6: '周六',
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7: '周日',
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};
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export const WEEKDAYS: readonly number[] = [1, 2, 3, 4, 5, 6, 7];
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/** 默认学期周次上限 */
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export const DEFAULT_WEEK_COUNT = 20;
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/** WebSocket 事件名（服务端广播 / 客户端监听保持一致） */
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export const SOCKET_EVENTS = {
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notificationNew: 'notification:new',
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homeworkNew: 'homework:new',
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homeworkUpdated: 'homework:updated',
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homeworkStatus: 'homework:status',
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gradeUpdated: 'grade:updated',
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scheduleUpdated: 'schedule:updated',
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classUpdated: 'class:updated',
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connected: 'connected',
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} as const;
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/** Socket.IO 房间名生成规则：与后端保持一致，客户端订阅时复用 */
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export const SOCKET_ROOMS = {
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class: (classId: string): string => `class:${classId}`,
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user: (userId: string): string => `user:${userId}`,
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teacher: (teacherId: string): string => `teacher:${teacherId}`,
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role: (role: UserRole): string => `role:${role}`,
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students: 'students',
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teachers: 'teachers',
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} as const;
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/** 本地持久化键（Web 端 localStorage / EXE 端 IndexedDB 命名空间） */
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export const STORAGE_KEYS = {
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token: 'classhelper.token',
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user: 'classhelper.user',
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serverUrl: 'classhelper.serverUrl',
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cachePrefix: 'classhelper.cache',
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lastSyncAt: 'classhelper.lastSyncAt',
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} as const;
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/** 桌面客户端默认后端地址 */
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export const DEFAULT_SERVER_URL = 'http://127.0.0.1:4000';
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/** 默认端口与分页 */
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export const DEFAULT_SERVER_PORT = 4000;
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export const DEFAULT_PAGE_SIZE = 20;
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export const MAX_PAGE_SIZE = 200;
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/** 教师与管理员角色集合，便于 RBAC 判断 */
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export const STAFF_ROLES: readonly UserRole[] = ['ADMIN', 'TEACHER'];
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/**
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* @classhelper/shared 入口。
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* 后端、Web 管理端、桌面客户端统一从这里导入类型与工具函数。
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*/
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export * from './constants.js';
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export * from './utils.js';
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export type * from './types.js';
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/**
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* 三端共享的领域类型定义。
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* 这里的类型是后端 REST API / WebSocket 契约的唯一来源，
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* 后端返回值与前端调用方都必须依赖它，避免契约漂移。
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*/
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/** 用户角色：管理员 / 教师 / 学生 */
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export type UserRole = 'ADMIN' | 'TEACHER' | 'STUDENT';
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/** 通知优先级 */
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export type NotificationPriority = 'LOW' | 'NORMAL' | 'HIGH' | 'URGENT';
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/** 成绩等级 */
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export type GradeLevel = 'A' | 'B' | 'C' | 'D' | 'E';
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/** 统一响应体（后端所有接口均返回该结构） */
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export interface ApiResponse<T = unknown> {
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success: boolean;
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data: T;
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message: string;
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}
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/** 统一错误响应体 */
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export interface ApiErrorResponse {
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success: false;
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data: null;
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message: string;
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code?: string;
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details?: unknown;
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}
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/** 分页查询参数 */
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export interface PaginationQuery {
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page?: number;
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pageSize?: number;
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}
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/** 分页结果 */
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export interface PaginatedResult<T> {
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items: T[];
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total: number;
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page: number;
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pageSize: number;
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}
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/* ------------------------------------------------------------------ 用户 / 认证 */
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export interface UserDto {
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id: string;
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username: string;
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name: string;
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role: UserRole;
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classId: string | null;
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createdAt: string;
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}
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export interface StudentDto extends UserDto {
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className?: string | null;
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grade?: string | null;
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}
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export interface LoginRequest {
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username: string;
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password: string;
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}
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export interface LoginResponse {
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token: string;
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user: UserDto;
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}
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/* ------------------------------------------------------------------ 班级 */
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export interface ClassDto {
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id: string;
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name: string;
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grade: string;
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teacherId: string;
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createdAt: string;
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teacher?: ClassTeacherBrief | null;
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studentCount?: number;
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courseCount?: number;
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homeworkCount?: number;
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notificationCount?: number;
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}
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export interface ClassTeacherBrief {
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id: string;
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name: string;
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username: string;
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}
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export interface ClassDetailDto extends ClassDto {
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students: StudentDto[];
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courses: CourseDto[];
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teachers: ClassTeacherBrief[];
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}
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export interface CreateClassRequest {
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name: string;
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grade: string;
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}
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export interface UpdateClassRequest {
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name?: string;
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grade?: string;
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}
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/* ------------------------------------------------------------------ 课程 */
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export interface CourseDto {
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id: string;
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name: string;
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teacherId: string;
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classId: string;
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createdAt: string;
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teacher?: ClassTeacherBrief | null;
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}
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export interface CreateCourseRequest {
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name: string;
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classId: string;
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}
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/* ------------------------------------------------------------------ 课表 */
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/**
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* 课表条目。
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* 星期与周次均为 1 起始：dayOfWeek 1=周一 ... 7=周日，weekStart/weekEnd 为学期周次。
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*/
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export interface ScheduleDto {
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id: string;
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classId: string;
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courseId: string;
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dayOfWeek: number;
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/** HH:mm */
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startTime: string;
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/** HH:mm */
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endTime: string;
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location: string | null;
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weekStart: number;
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weekEnd: number;
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createdAt: string;
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course?: CourseBrief | null;
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}
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export interface CourseBrief {
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id: string;
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name: string;
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}
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export interface CreateScheduleRequest {
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classId: string;
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courseId: string;
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dayOfWeek: number;
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startTime: string;
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endTime: string;
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location?: string | null;
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weekStart?: number;
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weekEnd?: number;
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}
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export type UpdateScheduleRequest = Partial<CreateScheduleRequest>;
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/** 按天分组的课表视图，供客户端渲染周视图 */
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export interface ScheduleDayColumn {
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dayOfWeek: number;
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label: string;
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items: ScheduleDto[];
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}
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export interface ScheduleWeekView {
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week: number;
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columns: ScheduleDayColumn[];
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}
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/* ------------------------------------------------------------------ 作业 */
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export interface HomeworkDto {
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id: string;
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classId: string;
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courseId: string | null;
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title: string;
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content: string;
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attachmentUrl: string | null;
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dueAt: string | null;
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createdBy: string;
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createdAt: string;
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course?: CourseBrief | null;
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creator?: ClassTeacherBrief | null;
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/** 当前登录学生的完成状态（学生端接口返回） */
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completed?: boolean;
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homeworkStatus?: HomeworkStatusDto | null;
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/** 教师视角：已提交人数 */
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completedCount?: number;
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}
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export interface HomeworkStatusDto {
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id: string;
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homeworkId: string;
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userId: string;
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completed: boolean;
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updatedAt: string;
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}
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export interface CreateHomeworkRequest {
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classId: string;
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courseId?: string | null;
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title: string;
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content: string;
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attachmentUrl?: string | null;
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dueAt?: string | null;
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}
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export interface UpdateHomeworkStatusRequest {
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completed: boolean;
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}
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export interface HomeworkQueryParams {
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classId?: string;
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courseId?: string;
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/** 学生端：只看未完成 */
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pendingOnly?: boolean;
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keyword?: string;
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}
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/* ------------------------------------------------------------------ 通知 */
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export interface NotificationDto {
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id: string;
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classId: string;
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title: string;
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content: string;
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priority: NotificationPriority;
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createdBy: string;
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createdAt: string;
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creator?: ClassTeacherBrief | null;
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/** 当前用户是否已读 */
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read?: boolean;
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readAt?: string | null;
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/** 教师视角：已读人数 */
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readCount?: number;
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}
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export interface CreateNotificationRequest {
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classId: string;
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title: string;
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content: string;
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priority?: NotificationPriority;
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}
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export interface NotificationQueryParams {
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classId?: string;
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priority?: NotificationPriority;
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unreadOnly?: boolean;
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keyword?: string;
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}
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/* ------------------------------------------------------------------ 成绩 */
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export interface GradeDto {
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id: string;
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classId: string;
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courseId: string | null;
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userId: string;
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examName: string;
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score: number;
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totalScore: number;
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publishedAt: string;
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course?: CourseBrief | null;
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student?: ClassTeacherBrief | null;
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className?: string | null;
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}
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export interface CreateGradeRequest {
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classId: string;
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courseId?: string | null;
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userId: string;
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examName: string;
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score: number;
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totalScore?: number;
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publishedAt?: string | null;
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}
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/** 批量导入成绩（教师端"导入成绩"使用） */
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export interface BulkCreateGradeRequest {
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classId: string;
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courseId?: string | null;
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examName: string;
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totalScore?: number;
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publishedAt?: string | null;
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items: Array<{ userId: string; score: number }>;
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}
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/** 成绩统计（教师端图表 / 学生端汇总） */
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export interface GradeStats {
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total: number;
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averagePercent: number;
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byCourse: Array<{ courseId: string | null; courseName: string; count: number; averagePercent: number }>;
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distribution: Array<{ level: GradeLevel; count: number }>;
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}
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/* ------------------------------------------------------------------ 仪表盘 */
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export interface DashboardSummary {
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classCount: number;
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studentCount: number;
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courseCount: number;
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scheduleCount: number;
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homeworkCount: number;
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notificationCount: number;
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gradeCount: number;
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unreadNotificationCount: number;
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pendingHomeworkCount: number;
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recentNotifications: NotificationDto[];
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recentHomeworks: HomeworkDto[];
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upcomingDeadlines: HomeworkDto[];
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}
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/* ------------------------------------------------------------------ WebSocket */
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/** 服务端 -> 客户端事件名 */
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export interface ServerToClientEvents {
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'notification:new': (payload: NotificationDto) => void;
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'homework:new': (payload: HomeworkDto) => void;
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/** deleted=true 表示该作业已被删除，客户端应从本地缓存中移除 */
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'homework:updated': (payload: HomeworkDto & { deleted?: boolean }) => void;
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'homework:status': (payload: HomeworkStatusDto & { classId: string }) => void;
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'grade:updated': (payload: GradeDto) => void;
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'schedule:updated': (payload: {
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classId: string;
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action: 'created' | 'updated' | 'deleted';
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schedule?: ScheduleDto;
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}) => void;
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'class:updated': (payload: { classId: string; action: 'created' | 'updated' | 'deleted' }) => void;
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connected: (payload: { userId: string; role: UserRole; rooms: string[] }) => void;
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}
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/** 客户端 -> 服务端事件名 */
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export interface ClientToServerEvents {
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'class:join': (classId: string, ack?: (result: { ok: boolean; message?: string }) => void) => void;
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'class:leave': (classId: string) => void;
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ping: (ack?: () => void) => void;
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}
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/** 连接鉴权信息（Socket.IO handshake.auth） */
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export interface SocketAuthPayload {
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token: string;
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clientType?: 'admin' | 'desktop';
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}
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@@ -0,0 +1,209 @@
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import { WEEKDAY_LABELS, WEEKDAYS } from './constants.js';
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import type { GradeLevel, ScheduleDto, ScheduleWeekView } from './types.js';
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/* ------------------------------------------------------------------ 日期时间 */
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export function toDate(value: string | number | Date): Date {
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return value instanceof Date ? value : new Date(value);
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}
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function pad(input: number): string {
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return input < 10 ? `0${input}` : String(input);
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}
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/** 格式化为 YYYY-MM-DD，withTime=true 时追加 HH:mm */
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export function formatDate(value: string | number | Date | null | undefined, withTime = false): string {
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if (value === null || value === undefined || value === '') return '';
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const date = toDate(value);
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if (Number.isNaN(date.getTime())) return '';
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const day = `${date.getFullYear()}-${pad(date.getMonth() + 1)}-${pad(date.getDate())}`;
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return withTime ? `${day} ${pad(date.getHours())}:${pad(date.getMinutes())}` : day;
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}
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export function formatTime(value: string | number | Date | null | undefined): string {
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if (value === null || value === undefined || value === '') return '';
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const date = toDate(value);
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if (Number.isNaN(date.getTime())) return '';
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return `${pad(date.getHours())}:${pad(date.getMinutes())}`;
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}
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/** 周几，1=周一 ... 7=周日 */
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export function weekdayOf(value: string | number | Date): number {
|
||||
const day = toDate(value).getDay();
|
||||
return day === 0 ? 7 : day;
|
||||
}
|
||||
|
||||
/** ISO 周次（与学期周次解耦，仅用于展示当前自然周） */
|
||||
export function getIsoWeek(value: string | number | Date): number {
|
||||
const date = toDate(value);
|
||||
const target = new Date(Date.UTC(date.getFullYear(), date.getMonth(), date.getDate()));
|
||||
const dayNumber = target.getUTCDay() || 7;
|
||||
target.setUTCDate(target.getUTCDate() + 4 - dayNumber);
|
||||
const yearStart = new Date(Date.UTC(target.getUTCFullYear(), 0, 1));
|
||||
return Math.ceil(((target.getTime() - yearStart.getTime()) / 86400000 + 1) / 7);
|
||||
}
|
||||
|
||||
/** 相对时间描述，例如"3 分钟前" */
|
||||
export function relativeTime(value: string | number | Date, now: Date = new Date()): string {
|
||||
const date = toDate(value);
|
||||
if (Number.isNaN(date.getTime())) return '';
|
||||
const diffSeconds = Math.floor((now.getTime() - date.getTime()) / 1000);
|
||||
if (diffSeconds < 60) return '刚刚';
|
||||
const minutes = Math.floor(diffSeconds / 60);
|
||||
if (minutes < 60) return `${minutes} 分钟前`;
|
||||
const hours = Math.floor(minutes / 60);
|
||||
if (hours < 24) return `${hours} 小时前`;
|
||||
const days = Math.floor(hours / 24);
|
||||
if (days < 30) return `${days} 天前`;
|
||||
return formatDate(date);
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------------ 课表 */
|
||||
|
||||
/** 判断某个课表条目在第 week 周是否上课 */
|
||||
export function isScheduleActiveInWeek(
|
||||
schedule: Pick<ScheduleDto, 'weekStart' | 'weekEnd'>,
|
||||
week: number,
|
||||
): boolean {
|
||||
return week >= schedule.weekStart && week <= schedule.weekEnd;
|
||||
}
|
||||
|
||||
/** 格式化周次范围，例如"1-20 周" / "单周" */
|
||||
export function formatWeekRange(weekStart: number, weekEnd: number): string {
|
||||
if (weekStart === weekEnd) return `第 ${weekStart} 周`;
|
||||
return `${weekStart}-${weekEnd} 周`;
|
||||
}
|
||||
|
||||
/** 按时间排序（HH:mm 字符串可直接字典序比较） */
|
||||
export function sortScheduleByTime<T extends Pick<ScheduleDto, 'dayOfWeek' | 'startTime'>>(items: T[]): T[] {
|
||||
return [...items].sort((a, b) =>
|
||||
a.dayOfWeek === b.dayOfWeek ? a.startTime.localeCompare(b.startTime) : a.dayOfWeek - b.dayOfWeek,
|
||||
);
|
||||
}
|
||||
|
||||
/** 组装周视图：7 列固定输出，便于前端直接渲染 */
|
||||
export function buildScheduleWeekView(items: ScheduleDto[], week: number): ScheduleWeekView {
|
||||
const active = sortScheduleByTime(items.filter((item) => isScheduleActiveInWeek(item, week)));
|
||||
return {
|
||||
week,
|
||||
columns: WEEKDAYS.map((dayOfWeek) => ({
|
||||
dayOfWeek,
|
||||
label: WEEKDAY_LABELS[dayOfWeek] ?? `周${dayOfWeek}`,
|
||||
items: active.filter((item) => item.dayOfWeek === dayOfWeek),
|
||||
})),
|
||||
};
|
||||
}
|
||||
|
||||
/** 计算两个 HH:mm 之间的时长（分钟），非法输入返回 0 */
|
||||
export function durationMinutes(startTime: string, endTime: string): number {
|
||||
const [sh, sm] = startTime.split(':').map(Number);
|
||||
const [eh, em] = endTime.split(':').map(Number);
|
||||
if ([sh, sm, eh, em].some((n) => Number.isNaN(n))) return 0;
|
||||
return (eh as number) * 60 + (em as number) - ((sh as number) * 60 + (sm as number));
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------------ 作业 */
|
||||
|
||||
/** 是否已过截止时间 */
|
||||
export function isOverdue(dueAt: string | null | undefined, now: Date = new Date()): boolean {
|
||||
if (!dueAt) return false;
|
||||
const due = toDate(dueAt);
|
||||
return !Number.isNaN(due.getTime()) && due.getTime() < now.getTime();
|
||||
}
|
||||
|
||||
/** 距离截止时间的可读描述，例如"还剩 2 天"、"已逾期 3 小时" */
|
||||
export function formatDeadline(dueAt: string | null | undefined, now: Date = new Date()): string {
|
||||
if (!dueAt) return '无截止时间';
|
||||
const due = toDate(dueAt);
|
||||
if (Number.isNaN(due.getTime())) return '无截止时间';
|
||||
const diffMinutes = Math.round((due.getTime() - now.getTime()) / 60000);
|
||||
const prefix = diffMinutes < 0 ? '已逾期' : '还剩';
|
||||
const abs = Math.abs(diffMinutes);
|
||||
if (abs < 60) return `${prefix} ${abs} 分钟`;
|
||||
if (abs < 60 * 24) return `${prefix} ${Math.floor(abs / 60)} 小时`;
|
||||
return `${prefix} ${Math.floor(abs / (60 * 24))} 天`;
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------------ 成绩 */
|
||||
|
||||
/** 得分率（0-100），总分非法时返回 0 */
|
||||
export function gradePercent(score: number, totalScore: number): number {
|
||||
if (!Number.isFinite(score) || !Number.isFinite(totalScore) || totalScore <= 0) return 0;
|
||||
return round((score / totalScore) * 100, 1);
|
||||
}
|
||||
|
||||
/** 等级换算，学生端图表与标签复用 */
|
||||
export function gradeLevel(percent: number): GradeLevel {
|
||||
if (percent >= 90) return 'A';
|
||||
if (percent >= 80) return 'B';
|
||||
if (percent >= 70) return 'C';
|
||||
if (percent >= 60) return 'D';
|
||||
return 'E';
|
||||
}
|
||||
|
||||
export function averageOf(numbers: number[]): number {
|
||||
const valid = numbers.filter((n) => Number.isFinite(n));
|
||||
if (valid.length === 0) return 0;
|
||||
return round(valid.reduce((sum, n) => sum + n, 0) / valid.length, 1);
|
||||
}
|
||||
|
||||
export function round(value: number, digits = 2): number {
|
||||
const factor = 10 ** digits;
|
||||
return Math.round(value * factor) / factor;
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------------ 通用 */
|
||||
|
||||
export function clamp(value: number, min: number, max: number): number {
|
||||
return Math.min(Math.max(value, min), max);
|
||||
}
|
||||
|
||||
export function groupBy<T, K extends string | number>(items: T[], keyOf: (item: T) => K): Map<K, T[]> {
|
||||
const map = new Map<K, T[]>();
|
||||
for (const item of items) {
|
||||
const key = keyOf(item);
|
||||
const bucket = map.get(key);
|
||||
if (bucket) bucket.push(item);
|
||||
else map.set(key, [item]);
|
||||
}
|
||||
return map;
|
||||
}
|
||||
|
||||
export function uniqueBy<T, K>(items: T[], keyOf: (item: T) => K): T[] {
|
||||
const seen = new Set<K>();
|
||||
const result: T[] = [];
|
||||
for (const item of items) {
|
||||
const key = keyOf(item);
|
||||
if (seen.has(key)) continue;
|
||||
seen.add(key);
|
||||
result.push(item);
|
||||
}
|
||||
return result;
|
||||
}
|
||||
|
||||
/** 生成 [1, max] 的周次选项，课表周次切换与表单下拉复用 */
|
||||
export function buildWeekOptions(max = 20, min = 1): number[] {
|
||||
const safeMax = Math.max(min, Math.floor(max));
|
||||
return Array.from({ length: safeMax - min + 1 }, (_, index) => min + index);
|
||||
}
|
||||
|
||||
/** 安全的数字转换，表单输入（字符串）到接口字段（number）之间使用 */
|
||||
export function toNumber(value: unknown, fallback = 0): number {
|
||||
if (typeof value === 'number' && Number.isFinite(value)) return value;
|
||||
if (typeof value === 'string' && value.trim() !== '') {
|
||||
const parsed = Number(value);
|
||||
if (Number.isFinite(parsed)) return parsed;
|
||||
}
|
||||
return fallback;
|
||||
}
|
||||
|
||||
/** 截断长文本（列表页展示摘要） */
|
||||
export function truncate(text: string | null | undefined, max = 60): string {
|
||||
if (!text) return '';
|
||||
return text.length <= max ? text : `${text.slice(0, max)}…`;
|
||||
}
|
||||
|
||||
/** HH:mm 校验 */
|
||||
export function isValidTimeString(value: string): boolean {
|
||||
return /^([01]\d|2[0-3]):[0-5]\d$/.test(value);
|
||||
}
|
||||
Reference in new issue
Block a user