Update package version to 1.1.3, add new dependencies for authentication and database management, and implement user authentication features including registration and login. Enhance API routes for protected access and integrate WebSocket authentication.

server/middleware/auth.js

@@ -0,0 +1,80 @@
+const jwt = require('jsonwebtoken');
+const { userDb } = require('../database/db');
+
+// Get JWT secret from environment or use default (for development)
+const JWT_SECRET = process.env.JWT_SECRET || 'claude-ui-dev-secret-change-in-production';
+
+// Optional API key middleware
+const validateApiKey = (req, res, next) => {
+  // Skip API key validation if not configured
+  if (!process.env.API_KEY) {
+    return next();
+  }
+  
+  const apiKey = req.headers['x-api-key'];
+  if (apiKey !== process.env.API_KEY) {
+    return res.status(401).json({ error: 'Invalid API key' });
+  }
+  next();
+};
+
+// JWT authentication middleware
+const authenticateToken = async (req, res, next) => {
+  const authHeader = req.headers['authorization'];
+  const token = authHeader && authHeader.split(' ')[1]; // Bearer TOKEN
+
+  if (!token) {
+    return res.status(401).json({ error: 'Access denied. No token provided.' });
+  }
+
+  try {
+    const decoded = jwt.verify(token, JWT_SECRET);
+    
+    // Verify user still exists and is active
+    const user = await userDb.getUserById(decoded.userId);
+    if (!user) {
+      return res.status(401).json({ error: 'Invalid token. User not found.' });
+    }
+    
+    req.user = user;
+    next();
+  } catch (error) {
+    console.error('Token verification error:', error);
+    return res.status(403).json({ error: 'Invalid token' });
+  }
+};
+
+// Generate JWT token (never expires)
+const generateToken = (user) => {
+  return jwt.sign(
+    { 
+      userId: user.id, 
+      username: user.username 
+    },
+    JWT_SECRET
+    // No expiration - token lasts forever
+  );
+};
+
+// WebSocket authentication function
+const authenticateWebSocket = (token) => {
+  if (!token) {
+    return null;
+  }
+  
+  try {
+    const decoded = jwt.verify(token, JWT_SECRET);
+    return decoded;
+  } catch (error) {
+    console.error('WebSocket token verification error:', error);
+    return null;
+  }
+};
+
+module.exports = {
+  validateApiKey,
+  authenticateToken,
+  generateToken,
+  authenticateWebSocket,
+  JWT_SECRET
+};