refactor: syncAll creates Student + StudentDingMapping directly

apps/server/src/integration/dingtalk.service.ts

@@ -4,14 +4,12 @@
  * 提供:
  * - OAuth2 access_token（新版 API + 缓存）
  * - BFS 遍历所有部门 + 用户（带限流）
- * - 用户同步（自动建 User + Student + StudentDingMapping）
+ * - 用户同步（自动建 Student + StudentDingMapping）
  */
 import { Injectable, Logger, ServiceUnavailableException } from '@nestjs/common';
 import { InjectRepository } from '@nestjs/typeorm';
 import { Repository } from 'typeorm';
-import * as bcrypt from 'bcryptjs';
 import { Department } from '../entities/department.entity';
-import { User } from '../entities/user.entity';
 import { Student } from '../entities/student.entity';
 import { Class } from '../entities/class.entity';
 import { StudentDingMapping } from '../entities/student-ding-mapping.entity';
@@ -187,8 +185,6 @@ export class DingTalkService {
   constructor(
     @InjectRepository(Department)
     private readonly deptRepo: Repository<Department>,
-    @InjectRepository(User)
-    private readonly userRepo: Repository<User>,
     @InjectRepository(Student)
     private readonly studentRepo: Repository<Student>,
     @InjectRepository(StudentDingMapping)
@@ -603,73 +599,35 @@ export class DingTalkService {
   // ═══════════════════════════════════════════
 
   private async syncOneUser(du: {
-    userid: string;
-    name: string;
-    mobile: string;
+    userid: string; name: string; mobile: string;
   }): Promise<void> {
-    // Look up by mapping first
-    let mapping = await this.studentDingMappingRepo.findOne({ where: { dingUserId: du.userid } });
-    let user: User | null = null;
-
+    let mapping = await this.studentDingMappingRepo.findOne({
+      where: { dingUserId: du.userid },
+    });
     if (mapping) {
-      const student = await this.studentRepo.findOne({ where: { id: mapping.studentId } });
+      const student = await this.studentRepo.findOne({
+        where: { id: mapping.studentId },
+      });
       if (student) {
         student.name = du.name;
+        if (du.mobile) student.phone = du.mobile;
         await this.studentRepo.save(student);
       }
-      await this.studentDingMappingRepo.save(mapping);
       return;
     }
 
-    // No mapping → find or create
-    const username = du.mobile || `dd_${du.userid}`;
-    user = await this.userRepo.findOne({ where: { username } });
+    const student = this.studentRepo.create({
+      name: du.name,
+      phone: du.mobile || undefined,
+      status: 'active',
+    });
+    await this.studentRepo.save(student);
 
-    if (!user) {
-      const passwordHash = await bcrypt.hash('123456', 10);
-      user = this.userRepo.create({
-        username,
-        name: du.name,
-        passwordHash,
-        isActive: true,
-      });
-      await this.userRepo.save(user);
-
-      const student = this.studentRepo.create({
-        name: du.name,
-        phone: du.mobile || undefined,
-        userId: user.id,
-        status: 'active',
-      });
-      await this.studentRepo.save(student);
-    } else {
-      // Update existing user
-      user.name = du.name;
-      await this.userRepo.save(user);
-
-      // Ensure Student record exists (backfill for users synced before this logic)
-      const existingStudent = await this.studentRepo.findOne({ where: { userId: user.id } });
-      if (existingStudent && existingStudent.status !== 'active') {
-        // Student was manually marked as staff/graduated/withdrawn — do not overwrite
-        this.logger.debug(`User ${user.id} has non-active Student (${existingStudent.status}), skipping backfill`);
-      } else if (!existingStudent) {
-        const student = this.studentRepo.create({
-          name: du.name,
-          phone: du.mobile || undefined,
-          userId: user.id,
-          status: 'active',
-        });
-        await this.studentRepo.save(student);
-      }
-    }
-
-    // ponytail: find student by userId — method rewritten in Task 2
-    const student = await this.studentRepo.findOne({ where: { userId: user.id } });
-    if (!student) return;
     mapping = this.studentDingMappingRepo.create({
       dingUserId: du.userid,
       studentId: student.id,
     });
+    await this.studentDingMappingRepo.save(mapping);
   }
 
   // ═══════════════════════════════════════════