整理代码结构

packages/backend/src/user/user.repository.ts

@@ -0,0 +1,30 @@
+import { getDbInstance, getDb, allDb } from '../database/connection';
+
+export interface User {
+  id: number;
+  username: string;
+  hashed_password?: string; // Optional, as not always needed by consumers
+  two_factor_secret?: string | null;
+  created_at: number;
+  updated_at: number;
+}
+
+export class UserRepository {
+  async findUserById(id: number): Promise<User | null> {
+    const db = await getDbInstance();
+    const sql = 'SELECT id, username, hashed_password, two_factor_secret, created_at, updated_at FROM users WHERE id = ?';
+    const user = await getDb<User>(db, sql, [id]);
+    return user ?? null;
+  }
+
+  async findUserByUsername(username: string): Promise<User | null> {
+    const db = await getDbInstance();
+    const sql = 'SELECT id, username, hashed_password, two_factor_secret, created_at, updated_at FROM users WHERE username = ?';
+    const user = await getDb<User>(db, sql, [username]);
+    return user ?? null;
+  }
+
+  // Add other user-related methods if needed, e.g., createUser, updateUserPassword, etc.
+}
+
+export const userRepository = new UserRepository();