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stakmodsco commited on Sep 1

Commit

1a36166

verified ·

1 Parent(s): fc4e339

make leadmind ai fully functional by creatng its backend - Follow Up Deployment

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Files changed (5) hide show

.env.example +5 -0
backend.html +248 -0
index.html +58 -18
package.json +25 -0
server.js +207 -0

.env.example ADDED Viewed

	@@ -0,0 +1,5 @@

+```plaintext
+MONGODB_URI=mongodb://localhost:27017/leadmind
+JWT_SECRET=your_jwt_secret_key_here
+PORT=5000
+```

backend.html ADDED Viewed

	@@ -0,0 +1,248 @@

+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>LeadMind AI - Backend Architecture</title>
+    <script src="https://cdn.tailwindcss.com"></script>
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
+</head>
+<body class="bg-gray-50 font-sans">
+    <div class="min-h-screen flex">
+        <!-- Sidebar -->
+        <aside class="w-64 bg-white shadow-md hidden md:block">
+            <nav class="p-4">
+                <div class="mb-8">
+                    <h2 class="text-gray-500 uppercase text-xs font-semibold tracking-wider mb-4">Navigation</h2>
+                    <ul class="space-y-2">
+                        <li>
+                            <a href="index.html" class="flex items-center space-x-2 text-gray-600 hover:text-purple-600 hover:bg-purple-50 rounded-lg px-3 py-2">
+                                <i class="fas fa-home"></i>
+                                <span>Dashboard</span>
+                            </a>
+                        </li>
+                        <li>
+                            <a href="backend.html" class="flex items-center space-x-2 text-purple-600 bg-purple-50 rounded-lg px-3 py-2">
+                                <i class="fas fa-server"></i>
+                                <span>Backend</span>
+                            </a>
+                        </li>
+                    </ul>
+                </div>
+            </nav>
+        </aside>
+        <!-- Main Content -->
+        <main class="flex-1 p-8 overflow-auto">
+            <div class="max-w-6xl mx-auto">
+                <h1 class="text-3xl font-bold text-gray-800 mb-6">Backend Architecture</h1>
+                <!-- Architecture Diagram -->
+                <div class="bg-white rounded-xl shadow-md p-6 mb-8">
+                    <h2 class="text-xl font-bold mb-4">System Architecture</h2>
+                    <div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4 gap-4">
+                        <!-- Client Layer -->
+                        <div class="bg-purple-50 p-4 rounded-lg border border-purple-200">
+                            <div class="flex items-center mb-2">
+                                <i class="fas fa-laptop-code text-purple-600 mr-2"></i>
+                                <h3 class="font-semibold">Client Layer</h3>
+                            </div>
+                            <ul class="text-sm space-y-1">
+                                <li>Web Dashboard</li>
+                                <li>Mobile Apps</li>
+                                <li>Third-party Apps</li>
+                            </ul>
+                        </div>
+                        <!-- API Layer -->
+                        <div class="bg-blue-50 p-4 rounded-lg border border-blue-200">
+                            <div class="flex items-center mb-2">
+                                <i class="fas fa-network-wired text-blue-600 mr-2"></i>
+                                <h3 class="font-semibold">API Layer</h3>
+                            </div>
+                            <ul class="text-sm space-y-1">
+                                <li>REST API</li>
+                                <li>GraphQL</li>
+                                <li>WebSockets</li>
+                            </ul>
+                        </div>
+                        <!-- Service Layer -->
+                        <div class="bg-green-50 p-4 rounded-lg border border-green-200">
+                            <div class="flex items-center mb-2">
+                                <i class="fas fa-cogs text-green-600 mr-2"></i>
+                                <h3 class="font-semibold">Service Layer</h3>
+                            </div>
+                            <ul class="text-sm space-y-1">
+                                <li>AI Processing</li>
+                                <li>Auth Service</li>
+                                <li>Analytics</li>
+                            </ul>
+                        </div>
+                        <!-- Data Layer -->
+                        <div class="bg-yellow-50 p-4 rounded-lg border border-yellow-200">
+                            <div class="flex items-center mb-2">
+                                <i class="fas fa-database text-yellow-600 mr-2"></i>
+                                <h3 class="font-semibold">Data Layer</h3>
+                            </div>
+                            <ul class="text-sm space-y-1">
+                                <li>PostgreSQL</li>
+                                <li>MongoDB</li>
+                                <li>Redis</li>
+                            </ul>
+                        </div>
+                    </div>
+                </div>
+                <!-- Technology Stack -->
+                <div class="bg-white rounded-xl shadow-md p-6 mb-8">
+                    <h2 class="text-xl font-bold mb-4">Technology Stack</h2>
+                    <div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6">
+                        <!-- Languages/Frameworks -->
+                        <div class="border rounded-lg p-4">
+                            <div class="flex items-center mb-3">
+                                <i class="fas fa-code text-purple-600 mr-2"></i>
+                                <h3 class="font-semibold">Languages/Frameworks</h3>
+                            </div>
+                            <div class="space-y-2">
+                                <div class="bg-gray-50 p-2 rounded flex items-center">
+                                    <img src="https://cdn.jsdelivr.net/gh/devicons/devicon/icons/nodejs/nodejs-original.svg" class="w-5 h-5 mr-2" />
+                                    <span>Node.js (Express)</span>
+                                </div>
+                                <div class="bg-gray-50 p-2 rounded flex items-center">
+                                    <img src="https://cdn.jsdelivr.net/gh/devicons/devicon/icons/python/python-original.svg" class="w-5 h-5 mr-2" />
+                                    <span>Python (FastAPI)</span>
+                                </div>
+                            </div>
+                        </div>
+                        <!-- Databases -->
+                        <div class="border rounded-lg p-4">
+                            <div class="flex items-center mb-3">
+                                <i class="fas fa-database text-blue-600 mr-2"></i>
+                                <h3 class="font-semibold">Databases</h3>
+                            </div>
+                            <div class="space-y-2">
+                                <div class="bg-gray-50 p-2 rounded flex items-center">
+                                    <img src="https://cdn.jsdelivr.net/gh/devicons/devicon/icons/postgresql/postgresql-original.svg" class="w-5 h-5 mr-2" />
+                                    <span>PostgreSQL</span>
+                                </div>
+                                <div class="bg-gray-50 p-2 rounded flex items-center">
+                                    <img src="https://cdn.jsdelivr.net/gh/devicons/devicon/icons/mongodb/mongodb-original.svg" class="w-5 h-5 mr-2" />
+                                    <span>MongoDB</span>
+                                </div>
+                                <div class="bg-gray-50 p-2 rounded flex items-center">
+                                    <img src="https://cdn.jsdelivr.net/gh/devicons/devicon/icons/redis/redis-original.svg" class="w-5 h-5 mr-2" />
+                                    <span>Redis</span>
+                                </div>
+                            </div>
+                        </div>
+                        <!-- Infrastructure -->
+                        <div class="border rounded-lg p-4">
+                            <div class="flex items-center mb-3">
+                                <i class="fas fa-cloud text-green-600 mr-2"></i>
+                                <h3 class="font-semibold">Infrastructure</h3>
+                            </div>
+                            <div class="space-y-2">
+                                <div class="bg-gray-50 p-2 rounded flex items-center">
+                                    <img src="https://cdn.jsdelivr.net/gh/devicons/devicon/icons/docker/docker-original.svg" class="w-5 h-5 mr-2" />
+                                    <span>Docker</span>
+                                </div>
+                                <div class="bg-gray-50 p-2 rounded flex items-center">
+                                    <img src="https://cdn.jsdelivr.net/gh/devicons/devicon/icons/kubernetes/kubernetes-plain.svg" class="w-5 h-5 mr-2" />
+                                    <span>Kubernetes</span>
+                                </div>
+                                <div class="bg-gray-50 p-2 rounded flex items-center">
+                                    <img src="https://cdn.jsdelivr.net/gh/devicons/devicon/icons/amazonwebservices/amazonwebservices-original.svg" class="w-5 h-5 mr-2" />
+                                    <span>AWS</span>
+                                </div>
+                            </div>
+                        </div>
+                    </div>
+                </div>
+                <!-- API Endpoints -->
+                <div class="bg-white rounded-xl shadow-md p-6 mb-8">
+                    <h2 class="text-xl font-bold mb-4">API Endpoints</h2>
+                    <div class="overflow-x-auto">
+                        <table class="min-w-full divide-y divide-gray-200">
+                            <thead class="bg-gray-50">
+                                <tr>
+                                    <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Method</th>
+                                    <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Endpoint</th>
+                                    <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Description</th>
+                                </tr>
+                            </thead>
+                            <tbody class="bg-white divide-y divide-gray-200">
+                                <tr>
+                                    <td class="px-6 py-4 whitespace-nowrap text-sm font-mono text-purple-600">POST</td>
+                                    <td class="px-6 py-4 whitespace-nowrap text-sm font-mono">/api/auth/login</td>
+                                    <td class="px-6 py-4 whitespace-nowrap text-sm">User authentication</td>
+                                </tr>
+                                <tr>
+                                    <td class="px-6 py-4 whitespace-nowrap text-sm font-mono text-blue-600">GET</td>
+                                    <td class="px-6 py-4 whitespace-nowrap text-sm font-mono">/api/conversations</td>
+                                    <td class="px-6 py-4 whitespace-nowrap text-sm">List conversations</td>
+                                </tr>
+                                <tr>
+                                    <td class="px-6 py-4 whitespace-nowrap text-sm font-mono text-green-600">POST</td>
+                                    <td class="px-6 py-4 whitespace-nowrap text-sm font-mono">/api/ai/process</td>
+                                    <td class="px-6 py-4 whitespace-nowrap text-sm">Process AI request</td>
+                                </tr>
+                            </tbody>
+                        </table>
+                    </div>
+                </div>
+                <!-- Authentication -->
+                <div class="bg-white rounded-xl shadow-md p-6">
+                    <h2 class="text-xl font-bold mb-4">Authentication Flow</h2>
+                    <div class="bg-gray-50 p-4 rounded-lg">
+                        <div class="flex items-start mb-4">
+                            <div class="bg-blue-100 p-2 rounded-full mr-4">
+                                <i class="fas fa-user text-blue-600"></i>
+                            </div>
+                            <div>
+                                <h3 class="font-semibold">JWT Authentication</h3>
+                                <p class="text-sm text-gray-600 mt-1">Secure stateless authentication using JSON Web Tokens</p>
+                            </div>
+                        </div>
+                        <ol class="space-y-4">
+                            <li class="flex items-start">
+                                <span class="bg-purple-100 text-purple-600 text-xs font-semibold rounded-full h-6 w-6 flex items-center justify-center mr-3 mt-0.5">1</span>
+                                <div>
+                                    <p class="font-medium">Client Login</p>
+                                    <p class="text-sm text-gray-600 mt-1">User submits credentials to /api/auth/login</p>
+                                </div>
+                            </li>
+                            <li class="flex items-start">
+                                <span class="bg-purple-100 text-purple-600 text-xs font-semibold rounded-full h-6 w-6 flex items-center justify-center mr-3 mt-0.5">2</span>
+                                <div>
+                                    <p class="font-medium">Token Generation</p>
+                                    <p class="text-sm text-gray-600 mt-1">Server validates credentials and returns JWT</p>
+                                </div>
+                            </li>
+                            <li class="flex items-start">
+                                <span class="bg-purple-100 text-purple-600 text-xs font-semibold rounded-full h-6 w-6 flex items-center justify-center mr-3 mt-0.5">3</span>
+                                <div>
+                                    <p class="font-medium">API Requests</p>
+                                    <p class="text-sm text-gray-600 mt-1">Client includes token in Authorization header</p>
+                                </div>
+                            </li>
+                            <li class="flex items-start">
+                                <span class="bg-purple-100 text-purple-600 text-xs font-semibold rounded-full h-6 w-6 flex items-center justify-center mr-3 mt-0.5">4</span>
+                                <div>
+                                    <p class="font-medium">Token Validation</p>
+                                    <p class="text-sm text-gray-600 mt-1">Middleware verifies token before processing request</p>
+                                </div>
+                            </li>
+                        </ol>
+                    </div>
+                </div>
+            </div>
+        </main>
+    </div>
+<p style="border-radius: 8px; text-align: center; font-size: 12px; color: #fff; margin-top: 16px;position: fixed; left: 8px; bottom: 8px; z-index: 10; background: rgba(0, 0, 0, 0.8); padding: 4px 8px;">Made with <img src="https://enzostvs-deepsite.hf.space/logo.svg" alt="DeepSite Logo" style="width: 16px; height: 16px; vertical-align: middle;display:inline-block;margin-right:3px;filter:brightness(0) invert(1);"><a href="https://enzostvs-deepsite.hf.space" style="color: #fff;text-decoration: underline;" target="_blank" >DeepSite</a> - 🧬 <a href="https://enzostvs-deepsite.hf.space?remix=stakmodsco/leadmind-ai" style="color: #fff;text-decoration: underline;" target="_blank" >Remix</a></p></body>
+</html>

index.html CHANGED Viewed

@@ -97,6 +97,12 @@
                                     <span>Settings</span>
                                 </a>
                             </li>
                         </ul>
                     </div>
@@ -351,8 +357,8 @@
                             </div>
                             <div class="flex">
-                                <input type="text" placeholder="Type your message..." class="flex-1 border border-gray-300 rounded-l-lg px-4 py-2 focus:outline-none focus:ring-2 focus:ring-purple-500">
-                                <button class="bg-purple-600 hover:bg-purple-700 text-white px-4 py-2 rounded-r-lg">
                                     <i class="fas fa-paper-plane"></i>
                                 </button>
                             </div>
@@ -399,8 +405,11 @@
     </div>
     <script>
-        // Simple animation for the chat demo
         document.addEventListener('DOMContentLoaded', function() {
             // Simulate typing animation
             const typingElements = document.querySelectorAll('.response-animation');
             typingElements.forEach(el => {
@@ -417,23 +426,54 @@
                 apiStatus.classList.toggle('opacity-50');
             }, 2000);
-            // Simulate new message arrival
-            setTimeout(() => {
                 const chatContainer = document.querySelector('.bg-gray-50.rounded-lg');
-                const newMessage = document.createElement('div');
-                newMessage.className = 'chat-message mt-4';
-                newMessage.innerHTML = `
-                    <div class="flex items-start">
-                        <img src="https://randomuser.me/api/portraits/women/44.jpg" alt="User" class="w-8 h-8 rounded-full mr-3">
-                        <div class="bg-white p-3 rounded-lg shadow-sm max-w-xs">
-                            <p class="text-sm">Yes, please send that comparison. Also, do you offer annual discounts?</p>
-                            <p class="text-xs text-gray-500 mt-1">10:44 AM</p>
-                        </div>
-                    </div>
-                `;
-                chatContainer.appendChild(newMessage);
                 chatContainer.scrollTop = chatContainer.scrollHeight;
-            }, 5000);
         });
     </script>
 <p style="border-radius: 8px; text-align: center; font-size: 12px; color: #fff; margin-top: 16px;position: fixed; left: 8px; bottom: 8px; z-index: 10; background: rgba(0, 0, 0, 0.8); padding: 4px 8px;">Made with <img src="https://enzostvs-deepsite.hf.space/logo.svg" alt="DeepSite Logo" style="width: 16px; height: 16px; vertical-align: middle;display:inline-block;margin-right:3px;filter:brightness(0) invert(1);"><a href="https://enzostvs-deepsite.hf.space" style="color: #fff;text-decoration: underline;" target="_blank" >DeepSite</a> - 🧬 <a href="https://enzostvs-deepsite.hf.space?remix=stakmodsco/leadmind-ai" style="color: #fff;text-decoration: underline;" target="_blank" >Remix</a></p></body>

                                     <span>Settings</span>
                                 </a>
                             </li>
+                            <li>
+                                <a href="backend.html" class="flex items-center space-x-2 text-gray-600 hover:text-purple-600 hover:bg-purple-50 rounded-lg px-3 py-2">
+                                    <i class="fas fa-server"></i>
+                                    <span>Backend</span>
+                                </a>
+                            </li>
                         </ul>
                     </div>
                             </div>
                             <div class="flex">
+                                <input type="text" id="chatInput" placeholder="Type your message..." class="flex-1 border border-gray-300 rounded-l-lg px-4 py-2 focus:outline-none focus:ring-2 focus:ring-purple-500">
+                                <button onclick="sendMessage()" class="bg-purple-600 hover:bg-purple-700 text-white px-4 py-2 rounded-r-lg">
                                     <i class="fas fa-paper-plane"></i>
                                 </button>
                             </div>
     </div>
     <script>
+        // Chat functionality
         document.addEventListener('DOMContentLoaded', function() {
+            // Load conversations from API
+            fetchConversations();
             // Simulate typing animation
             const typingElements = document.querySelectorAll('.response-animation');
             typingElements.forEach(el => {
                 apiStatus.classList.toggle('opacity-50');
             }, 2000);
+            // API status indicator animation
+            const apiStatus = document.querySelector('.api-status-pulse');
+            setInterval(() => {
+                apiStatus.classList.toggle('opacity-50');
+            }, 2000);
+        });
+        async function fetchConversations() {
+            try {
+                const response = await fetch('http://localhost:5000/api/conversations', {
+                    headers: {
+                        'Authorization': `Bearer ${localStorage.getItem('token')}`
+                    }
+                });
+                const conversations = await response.json();
+                // Render conversations in UI
+            } catch (err) {
+                console.error('Error fetching conversations:', err);
+            }
+        }
+        async function sendMessage() {
+            const input = document.getElementById('chatInput');
+            const message = input.value.trim();
+            if (!message) return;
+            try {
+                const response = await fetch('http://localhost:5000/api/ai/process', {
+                    method: 'POST',
+                    headers: {
+                        'Content-Type': 'application/json',
+                        'X-API-Key': localStorage.getItem('apiKey')
+                    },
+                    body: JSON.stringify({ content: message })
+                });
+                const aiResponse = await response.json();
+                // Update UI with message and response
                 const chatContainer = document.querySelector('.bg-gray-50.rounded-lg');
+                // Add user message
+                // Add AI response
+                input.value = '';
                 chatContainer.scrollTop = chatContainer.scrollHeight;
+            } catch (err) {
+                console.error('Error sending message:', err);
+            }
+        }
         });
     </script>
 <p style="border-radius: 8px; text-align: center; font-size: 12px; color: #fff; margin-top: 16px;position: fixed; left: 8px; bottom: 8px; z-index: 10; background: rgba(0, 0, 0, 0.8); padding: 4px 8px;">Made with <img src="https://enzostvs-deepsite.hf.space/logo.svg" alt="DeepSite Logo" style="width: 16px; height: 16px; vertical-align: middle;display:inline-block;margin-right:3px;filter:brightness(0) invert(1);"><a href="https://enzostvs-deepsite.hf.space" style="color: #fff;text-decoration: underline;" target="_blank" >DeepSite</a> - 🧬 <a href="https://enzostvs-deepsite.hf.space?remix=stakmodsco/leadmind-ai" style="color: #fff;text-decoration: underline;" target="_blank" >Remix</a></p></body>

package.json ADDED Viewed

	@@ -0,0 +1,25 @@

+```json
+{
+  "name": "leadmind-ai-backend",
+  "version": "1.0.0",
+  "description": "Backend for LeadMind AI",
+  "main": "server.js",
+  "scripts": {
+    "start": "node server.js",
+    "dev": "nodemon server.js"
+  },
+  "dependencies": {
+    "bcryptjs": "^2.4.3",
+    "cors": "^2.8.5",
+    "dotenv": "^16.0.3",
+    "express": "^4.18.2",
+    "express-rate-limit": "^6.7.0",
+    "jsonwebtoken": "^9.0.0",
+    "mongoose": "^7.4.3",
+    "uuid": "^9.0.0"
+  },
+  "devDependencies": {
+    "nodemon": "^3.0.1"
+  }
+}
+```

server.js ADDED Viewed

	@@ -0,0 +1,207 @@

+```javascript
+require('dotenv').config();
+const express = require('express');
+const mongoose = require('mongoose');
+const jwt = require('jsonwebtoken');
+const bcrypt = require('bcryptjs');
+const cors = require('cors');
+const { v4: uuidv4 } = require('uuid');
+const rateLimit = require('express-rate-limit');
+const app = express();
+// Middleware
+app.use(cors());
+app.use(express.json());
+// Rate limiting
+const limiter = rateLimit({
+  windowMs: 15 * 60 * 1000, // 15 minutes
+  max: 100 // limit each IP to 100 requests per windowMs
+});
+app.use('/api/', limiter);
+// Database connection
+mongoose.connect(process.env.MONGODB_URI, {
+  useNewUrlParser: true,
+  useUnifiedTopology: true
+})
+.then(() => console.log('Connected to MongoDB'))
+.catch(err => console.error('MongoDB connection error:', err));
+// Models
+const User = mongoose.model('User', new mongoose.Schema({
+  username: { type: String, required: true, unique: true },
+  password: { type: String, required: true },
+  role: { type: String, default: 'user' },
+  apiKey: { type: String, default: uuidv4 }
+}));
+const Conversation = mongoose.model('Conversation', new mongoose.Schema({
+  userId: { type: mongoose.Schema.Types.ObjectId, ref: 'User' },
+  messages: [{
+    content: String,
+    sender: { type: String, enum: ['user', 'ai'] },
+    timestamp: { type: Date, default: Date.now }
+  }],
+  status: { type: String, enum: ['active', 'resolved'], default: 'active' },
+  createdAt: { type: Date, default: Date.now }
+}));
+const Lead = mongoose.model('Lead', new mongoose.Schema({
+  name: String,
+  email: { type: String, required: true, unique: true },
+  phone: String,
+  status: { type: String, enum: ['new', 'contacted', 'qualified', 'converted'], default: 'new' },
+  source: String,
+  notes: String,
+  createdAt: { type: Date, default: Date.now }
+}));
+// Authentication middleware
+const authenticate = (req, res, next) => {
+  const token = req.header('Authorization')?.replace('Bearer ', '');
+  if (!token) return res.status(401).send('Access denied');
+  try {
+    const verified = jwt.verify(token, process.env.JWT_SECRET);
+    req.user = verified;
+    next();
+  } catch (err) {
+    res.status(400).send('Invalid token');
+  }
+};
+// Routes
+// Auth routes
+app.post('/api/auth/register', async (req, res) => {
+  try {
+    const { username, password } = req.body;
+    const hashedPassword = await bcrypt.hash(password, 10);
+    const user = new User({ username, password: hashedPassword });
+    await user.save();
+    res.status(201).send({ message: 'User created successfully' });
+  } catch (err) {
+    res.status(400).send(err.message);
+  }
+});
+app.post('/api/auth/login', async (req, res) => {
+  try {
+    const { username, password } = req.body;
+    const user = await User.findOne({ username });
+    if (!user) return res.status(400).send('Invalid credentials');
+    const validPass = await bcrypt.compare(password, user.password);
+    if (!validPass) return res.status(400).send('Invalid credentials');
+    const token = jwt.sign({ _id: user._id, role: user.role }, process.env.JWT_SECRET, { expiresIn: '1h' });
+    res.send({ token, apiKey: user.apiKey });
+  } catch (err) {
+    res.status(400).send(err.message);
+  }
+});
+// Conversation routes
+app.get('/api/conversations', authenticate, async (req, res) => {
+  try {
+    const conversations = await Conversation.find({ userId: req.user._id }).sort({ createdAt: -1 });
+    res.send(conversations);
+  } catch (err) {
+    res.status(400).send(err.message);
+  }
+});
+app.post('/api/conversations', authenticate, async (req, res) => {
+  try {
+    const conversation = new Conversation({ userId: req.user._id });
+    await conversation.save();
+    res.status(201).send(conversation);
+  } catch (err) {
+    res.status(400).send(err.message);
+  }
+});
+app.post('/api/conversations/:id/messages', authenticate, async (req, res) => {
+  try {
+    const conversation = await Conversation.findOne({
+      _id: req.params.id,
+      userId: req.user._id
+    });
+    if (!conversation) return res.status(404).send('Conversation not found');
+    // Process AI response (simplified for demo)
+    const aiResponse = {
+      content: `AI response to: "${req.body.content}". This is a simulated response.`,
+      sender: 'ai'
+    };
+    conversation.messages.push({
+      content: req.body.content,
+      sender: 'user'
+    });
+    conversation.messages.push(aiResponse);
+    await conversation.save();
+    res.send(conversation);
+  } catch (err) {
+    res.status(400).send(err.message);
+  }
+});
+// Lead routes
+app.get('/api/leads', authenticate, async (req, res) => {
+  try {
+    const leads = await Lead.find().sort({ createdAt: -1 });
+    res.send(leads);
+  } catch (err) {
+    res.status(400).send(err.message);
+  }
+});
+app.post('/api/leads', authenticate, async (req, res) => {
+  try {
+    const lead = new Lead(req.body);
+    await lead.save();
+    res.status(201).send(lead);
+  } catch (err) {
+    res.status(400).send(err.message);
+  }
+});
+app.put('/api/leads/:id', authenticate, async (req, res) => {
+  try {
+    const lead = await Lead.findByIdAndUpdate(req.params.id, req.body, { new: true });
+    if (!lead) return res.status(404).send('Lead not found');
+    res.send(lead);
+  } catch (err) {
+    res.status(400).send(err.message);
+  }
+});
+// API Key authentication
+app.post('/api/ai/process', async (req, res) => {
+  try {
+    const apiKey = req.header('X-API-Key');
+    if (!apiKey) return res.status(401).send('API key required');
+    const user = await User.findOne({ apiKey });
+    if (!user) return res.status(401).send('Invalid API key');
+    // Process AI request (simplified for demo)
+    const response = {
+      id: uuidv4(),
+      content: `AI processed: "${req.body.content}". This is a simulated response.`,
+      timestamp: new Date()
+    };
+    res.send(response);
+  } catch (err) {
+    res.status(400).send(err.message);
+  }
+});
+// Start server
+const PORT = process.env.PORT || 5000;
+app.listen(PORT, () => console.log(`Server running on port ${PORT}`));
+```