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import { Router } from 'express';
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import { ApiError, sendOk } from '../../lib/http.js';
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import { authenticate, getAuthUser, requireRole } from '../../middleware/auth.js';
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import { validate, validatedBody, validatedQuery } from '../../middleware/validate.js';
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import { defineModule } from '../module.types.js';
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import {
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IMPORT_KINDS,
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tableCommitSchema,
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tableFileSchema,
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timeLayoutImportSchema,
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classPlanImportSchema,
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timeLayoutQuerySchema,
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type TableCommitInput,
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type TableFileInput,
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type TimeLayoutImportInput,
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type ClassPlanImportInput,
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} from './imports.schemas.js';
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import { buildTemplateCsv, buildTemplateXlsx, commitTable, previewTable } from './table-import.service.js';
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import { importClassPlan, previewClassPlan } from './class-plan.service.js';
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import {
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deleteTimeLayout,
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importTimeLayout,
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listTimeLayouts,
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previewClassIslandTimeLayout,
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} from './time-layout.service.js';
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const router = Router();
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router.use(authenticate());
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/** 名单类导入(学生/教师账号)只有管理员能做;成绩类按班级权限判定 */
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function assertImportKindAllowed(kind: (typeof IMPORT_KINDS)[number], role: string): void {
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if ((kind === 'students' || kind === 'teachers') && role !== 'ADMIN') {
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throw ApiError.forbidden(
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kind === 'teachers' ? '只有管理员可以录入或导入教师账号' : '只有管理员可以导入学生名单',
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);
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}
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}
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/** 查询参数里的 kind 收敛为合法值(默认 grades,避免非法值被当成成绩悄悄写入) */
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function resolveImportKind(value: unknown): (typeof IMPORT_KINDS)[number] {
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return IMPORT_KINDS.includes(value as (typeof IMPORT_KINDS)[number])
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? (value as (typeof IMPORT_KINDS)[number])
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: 'grades';
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}
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/**
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* GET /api/imports/template?kind=grades|students|teachers&format=csv|xlsx - 下载导入模板
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* 成绩模板:管理员或班主任(空白模板,不含任何业务数据);学生/教师名单模板:仅管理员
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*/
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router.get('/template', requireRole('ADMIN', 'TEACHER'), (req, res) => {
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const kind = resolveImportKind(req.query.kind);
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assertImportKindAllowed(kind, getAuthUser(req).role);
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const format = req.query.format === 'xlsx' ? 'xlsx' : 'csv';
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if (format === 'xlsx') {
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const base64 = buildTemplateXlsx(kind);
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res.setHeader('content-type', 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
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res.setHeader('content-disposition', `attachment; filename="template-${kind}.xlsx"`);
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res.send(Buffer.from(base64, 'base64'));
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return;
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}
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sendOk(
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res,
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{ kind, format, fileName: `template-${kind}.csv`, content: buildTemplateCsv(kind) },
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'模板生成成功',
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);
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});
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/**
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* POST /api/imports/table/preview - 上传表格并预览(解析 + 必填列校验 + 建议字段映射)
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* 成绩:管理员或班主任;学生/教师名单:仅管理员(与写入权限保持一致)
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*/
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router.post(
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'/table/preview',
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requireRole('ADMIN', 'TEACHER'),
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validate({ body: tableFileSchema }),
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(req, res) => {
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const input = validatedBody<TableFileInput>(req);
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assertImportKindAllowed(input.kind, getAuthUser(req).role);
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sendOk(res, previewTable(input), '表格解析成功');
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},
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);
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/**
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* POST /api/imports/table/commit - 执行导入(字段映射 + 写入模式 + 结果统计)
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*
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* 路由放行 ADMIN|TEACHER,真正的权限在 service 内按 kind + 班级二次校验:
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* 成绩 → 管理员或本班班主任;学生名单 → 仅管理员;科任老师一律 403(需求 7)。
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*/
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router.post(
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'/table/commit',
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requireRole('ADMIN', 'TEACHER'),
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validate({ body: tableCommitSchema }),
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async (req, res) => {
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const input = validatedBody<TableCommitInput>(req);
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assertImportKindAllowed(input.kind, getAuthUser(req).role);
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// 教师名单与班级无关;成绩/学生名单必须带班级,否则拒绝(避免写到"全局")
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if (input.kind !== 'teachers' && !input.classId) {
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throw ApiError.badRequest('请先选择要导入的班级');
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}
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const result = await commitTable(getAuthUser(req), input);
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sendOk(
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res,
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result,
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`导入完成:新增 ${result.inserted} / 更新 ${result.updated} / 跳过 ${result.skipped} / 失败 ${result.failed}`,
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);
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},
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);
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/**
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* POST /api/imports/time-layout/preview - 预览 ClassIsland 课表时间 JSON(只解析不写库)
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* 权限与"课表管理"一致:管理员或本班班主任
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*/
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router.post('/time-layout/preview', validate({ body: timeLayoutImportSchema }), async (req, res) => {
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const input = validatedBody<TimeLayoutImportInput>(req);
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// 预览也要校验班级权限(与导入一致),避免越权探测
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const { assertCanManageSchedule } = await import('../../lib/access.js');
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await assertCanManageSchedule(getAuthUser(req), input.classId);
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sendOk(res, previewClassIslandTimeLayout(input.payload), '解析完成');
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});
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/** GET /api/imports/time-layout?classId= - 查看该班已导入的时间配置 */
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router.get('/time-layout', validate({ query: timeLayoutQuerySchema }), async (req, res) => {
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const { classId } = validatedQuery<{ classId: string }>(req);
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sendOk(res, await listTimeLayouts(getAuthUser(req), classId), '获取时间配置成功');
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});
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/**
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* POST /api/imports/time-layout - 导入 ClassIsland 时间配置
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* mode=replace 覆盖 / merge 按开始时间合并;解析失败返回 400 且不修改原配置。
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*/
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router.post('/time-layout', validate({ body: timeLayoutImportSchema }), async (req, res) => {
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const result = await importTimeLayout(getAuthUser(req), validatedBody<TimeLayoutImportInput>(req));
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sendOk(
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res,
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result,
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result.mode === 'merge'
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? `合并导入成功:合并 ${result.merged} 节 / 新增 ${result.replaced} 节`
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: `覆盖导入成功:共 ${result.replaced} 节`,
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);
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});
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/** DELETE /api/imports/time-layout/:id - 删除某份时间配置 */
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router.delete('/time-layout/:id', async (req, res) => {
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await deleteTimeLayout(getAuthUser(req), req.params.id ?? '');
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sendOk(res, { id: req.params.id }, '时间配置已删除');
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});
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/**
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* POST /api/imports/class-plan/preview - 预览 ClassIsland 课程表 JSON(只解析不写库)
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* 真实档案里单双周由 ClassPlan.TimeRule.WeekCountDiv / WeekCountDivTotal 表达。
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*/
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router.post('/class-plan/preview', validate({ body: classPlanImportSchema }), async (req, res) => {
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const result = await previewClassPlan(getAuthUser(req), validatedBody<ClassPlanImportInput>(req));
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sendOk(
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res,
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result,
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`解析出 ${result.entries.length} 节课(${result.subjects.length} 个科目,缺 ${result.missingSubjects.length} 个待建课程)`,
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);
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});
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/**
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* POST /api/imports/class-plan - 导入 ClassIsland 课程表(支持单双周)
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* replace 清空后写入 / merge 按 星期+开始时间+单双周 去重;解析失败返回 400 且不改动现有课表。
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*/
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router.post('/class-plan', validate({ body: classPlanImportSchema }), async (req, res) => {
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const result = await importClassPlan(getAuthUser(req), validatedBody<ClassPlanImportInput>(req));
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sendOk(
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res,
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result,
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`导入成功:新增 ${result.created} 节 / 更新 ${result.updated} 节` +
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`${result.createdCourses.length > 0 ? `(自动补建课程:${result.createdCourses.join('、')})` : ''}`,
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);
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});
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export const importsModule = defineModule({
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name: 'imports',
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basePath: '/imports',
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router,
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});
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