fix: F12 P2 follow-up — batch imports set departmentId, optimize getDescendantIds, enforce campus root invariant

apps/server/src/classrooms/classrooms.controller.ts

@@ -211,7 +211,8 @@ export class ClassroomsController {
         supervisor: String(row.getCell(7).value || '') || undefined,
       });
     });
-    const result = await this.service.batchImport(rows);
+    const departmentId = req.headers?.['x-campus-id'] ? parseInt(String(req.headers['x-campus-id']), 10) || undefined : undefined;
+    const result = await this.service.batchImport(rows, departmentId);
     await this.logService.log({
       userId: req.user?.id,
       username: req.user?.username,

apps/server/src/classrooms/classrooms.service.ts

@@ -66,6 +66,7 @@ export class ClassroomsService {
       roomType?: string;
       courseType?: string;
     }[],
+    departmentId?: number,
   ) {
     let imported = 0;
     let skipped = 0;
@@ -74,7 +75,7 @@ export class ClassroomsService {
       if (!row.name?.trim()) { skipped++; continue; }
       const exists = await this.repo.findOne({ where: { name: row.name.trim() } });
       if (exists) { errors.push(`教室 ${row.name} 已存在`); skipped++; continue; }
-      await this.repo.save(this.repo.create({ ...row, capacity: row.capacity || 30 }));
+      await this.repo.save(this.repo.create({ ...row, capacity: row.capacity || 30, departmentId: departmentId ?? undefined }));
       imported++;
     }
     return { message: `成功导入 ${imported} 间教室，跳过 ${skipped} 间`, imported, skipped, errors: errors.length > 0 ? errors : undefined };

apps/server/src/departments/departments.service.ts

@@ -2,6 +2,7 @@ import { Injectable, NotFoundException, ConflictException } from '@nestjs/common
 import { InjectRepository } from '@nestjs/typeorm';
 import { Repository } from 'typeorm';
 import { Department } from '../entities/department.entity';
+import { DepartmentType } from '../entities/department.entity';
 import { UserDepartment } from '../entities/user-department.entity';
 import { CreateDepartmentDto, UpdateDepartmentDto, AssignUserDto } from './dto/department.dto';
 
@@ -58,6 +59,9 @@ export class DepartmentsService {
   }
 
   async create(dto: CreateDepartmentDto): Promise<Department> {
+    if (dto.type === DepartmentType.CAMPUS && dto.parentId) {
+      throw new ConflictException('校区类型的部门必须是根部门，不能设置上级');
+    }
     const dept = this.deptRepo.create(dto);
     return this.deptRepo.save(dept);
   }
@@ -65,6 +69,12 @@ export class DepartmentsService {
   async update(id: number, dto: UpdateDepartmentDto): Promise<Department> {
     const dept = await this.findOne(id);
 
+    const effectiveType = dto.type ?? dept.type;
+    const effectiveParentId = dto.parentId !== undefined ? dto.parentId : dept.parentId;
+    if (effectiveType === DepartmentType.CAMPUS && effectiveParentId) {
+      throw new ConflictException('校区类型的部门必须是根部门，不能设置上级');
+    }
+
     // Prevent parent cycles: parentId must not be the dept itself or one of its descendants
     if (dto.parentId !== undefined && dto.parentId !== null) {
       const newParentId = dto.parentId;
@@ -93,14 +103,21 @@ export class DepartmentsService {
 
   /** 获取部门的所有子部门 ID（递归，含自身） */
   async getDescendantIds(departmentId: number): Promise<number[]> {
-    const ids = [departmentId];
-    const children = await this.deptRepo.find({
-      where: { parentId: departmentId, status: 'active' },
-    });
-    for (const child of children) {
-      const childIds = await this.getDescendantIds(child.id);
-      ids.push(...childIds);
+    const all = await this.deptRepo.find({ where: { status: 'active' }, select: ['id', 'parentId'] });
+    const byParent = new Map<number | null, number[]>();
+    for (const d of all) {
+      const key = d.parentId ?? null;
+      byParent.set(key, [...(byParent.get(key) ?? []), d.id]);
     }
+    const ids: number[] = [departmentId];
+    const collect = (parentId: number) => {
+      const children = byParent.get(parentId) ?? [];
+      for (const childId of children) {
+        ids.push(childId);
+        collect(childId);
+      }
+    };
+    collect(departmentId);
     return ids;
   }
 

apps/server/src/rooms/rooms.controller.ts

@@ -275,7 +275,8 @@ export class RoomsController {
         monthlyRate,
       });
     });
-    const result = await this.service.batchImport(rows);
+    const departmentId = req.headers?.['x-campus-id'] ? parseInt(String(req.headers['x-campus-id']), 10) || undefined : undefined;
+    const result = await this.service.batchImport(rows, departmentId);
     await this.logService.log({
       userId: req.user?.id,
       username: req.user?.username,

apps/server/src/rooms/rooms.service.ts

@@ -246,6 +246,7 @@ export class RoomsService {
       rentalCategory?: string;
       monthlyRate?: number;
     }[],
+    departmentId?: number,
   ) {
     let imported = 0;
     let skipped = 0;
@@ -270,6 +271,7 @@ export class RoomsService {
           roomType: row.roomType || parsed.roomType || undefined,
           rentalCategory: row.rentalCategory || undefined,
           monthlyRate: row.monthlyRate ?? undefined,
+          departmentId: departmentId ?? undefined,
         }),
       );
       imported++;

apps/server/src/students/students.controller.ts

@@ -284,7 +284,8 @@ export class StudentsController {
         }
       }
     }
-    const result = await this.service.batchImport(rows);
+    const departmentId = req.headers?.['x-campus-id'] ? parseInt(String(req.headers['x-campus-id']), 10) || undefined : undefined;
+    const result = await this.service.batchImport(rows, departmentId);
     await this.logService.log({
       userId: req.user?.id,
       username: req.user?.username,

apps/server/src/students/students.service.ts

@@ -115,6 +115,7 @@ export class StudentsService {
       supervisor?: string;
       tenantId?: number;
     }[],
+    departmentId?: number,
   ) {
     let imported = 0;
     let skipped = 0;
@@ -140,6 +141,7 @@ export class StudentsService {
           organization: row.organization || undefined,
           supervisor: row.supervisor || undefined,
           tenantId: row.tenantId || undefined,
+          departmentId: departmentId ?? undefined,
         }),
       );
       imported++;