feat: 上次登录追踪 + 服务运行时间

Author: CodeJudge

backend/src/app.js

@@ -9,6 +9,7 @@ const submissionRoutes = require('./routes/submissions');
 
 const app = express();
 const PORT = process.env.PORT || 3001;
+const serverStart = Date.now();
 
 app.use(cors());
 app.use(express.json({ limit: '10mb' }));
@@ -42,7 +43,15 @@ app.use((req, res, next) => {
 
 // Health check
 app.get('/api/health', (req, res) => {
-  res.json({ status: 'ok', timestamp: new Date().toISOString() });
+  const uptime = Math.floor((Date.now() - serverStart) / 1000);
+  const hours = Math.floor(uptime / 3600);
+  const minutes = Math.floor((uptime % 3600) / 60);
+  res.json({
+    status: 'ok',
+    timestamp: new Date().toISOString(),
+    uptime: `${hours}h ${minutes}m`,
+    version: '1.0.0',
+  });
 });
 
 app.use('/api/auth', authRoutes);

backend/src/controllers/authController.js

@@ -33,10 +33,12 @@ function login(req, res) {
   if (!user || !bcrypt.compareSync(password, user.password)) {
     return res.status(401).json({ error: '邮箱或密码错误' });
   }
+  // Update last login
+  run('UPDATE users SET last_login = datetime() WHERE id = ?', [user.id]);
   const token = jwt.sign({ id: user.id, username: user.username, email: user.email, role: user.role }, JWT_SECRET, { expiresIn: '7d' });
   res.json({
     token,
-    user: { id: user.id, username: user.username, email: user.email, role: user.role },
+    user: { id: user.id, username: user.username, email: user.email, role: user.role, last_login: new Date().toISOString() },
   });
 }
 

backend/src/utils/initDb.js

@@ -11,9 +11,11 @@ async function initDb() {
       email TEXT UNIQUE NOT NULL,
       password TEXT NOT NULL,
       role TEXT DEFAULT 'user',
+      last_login DATETIME,
       created_at DATETIME DEFAULT CURRENT_TIMESTAMP
     )
   `);
+  try { exec('ALTER TABLE users ADD COLUMN last_login DATETIME'); } catch {}
 
   exec(`
     CREATE TABLE IF NOT EXISTS problems (