增加注册功能

backend/src/dao/UserDAO.ts

@@ -28,3 +28,35 @@ export async function findSubordinates(managerId: number): Promise<UserRow[]> {
   );
   return rows as UserRow[];
 }
+
+export interface CreateUserInput {
+  username: string;
+  password: string;
+  name: string;
+  role?: UserRole;
+  department: string;
+  position: string;
+  manager_id?: number | null;
+  status?: 'active' | 'inactive';
+}
+
+export async function createUser(userData: CreateUserInput): Promise<number> {
+  const {
+    username,
+    password,
+    name,
+    role = 'employee',
+    department,
+    position,
+    manager_id = null,
+    status = 'active'
+  } = userData;
+
+  const [result] = await pool.query<any>(
+    `INSERT INTO user (username, password, name, role, department, position, manager_id, status)
+     VALUES (?, ?, ?, ?, ?, ?, ?, ?)`,
+    [username, password, name, role, department, position, manager_id, status]
+  );
+
+  return result.insertId;
+}