feat: Initial commit of PDF Tools project

server/middleware/auth.js

@@ -0,0 +1,42 @@
+const jwt = require('jsonwebtoken');
+
+const auth = (req, res, next) => {
+  try {
+    const token = req.header('Authorization')?.replace('Bearer ', '');
+    
+    if (!token) {
+      return res.status(401).json({
+        success: false,
+        message: '未提供访问令牌'
+      });
+    }
+
+    const decoded = jwt.verify(token, process.env.JWT_SECRET);
+    req.user = decoded;
+    next();
+  } catch (error) {
+    res.status(401).json({
+      success: false,
+      message: '无效的访问令牌'
+    });
+  }
+};
+
+// 可选身份验证中间件
+const optionalAuth = (req, res, next) => {
+  try {
+    const token = req.header('Authorization')?.replace('Bearer ', '');
+    
+    if (token) {
+      const decoded = jwt.verify(token, process.env.JWT_SECRET);
+      req.user = decoded;
+    }
+    
+    next();
+  } catch (error) {
+    // 忽略错误，继续执行
+    next();
+  }
+};
+
+module.exports = { auth, optionalAuth };