🚀 Echo - AI Chatbot

Where your thoughts echo through intelligence

An intelligent AI chatbot built with React, Firebase, and Groq AI, featuring conversation memory and multiple AI personas.

✨ Features

• 🤖 Conversation Memory - AI remembers context across messages
• 🎭 Multiple Personas - Assistant, Senior Developer, Debugger, Creative Writer
• 🔐 Firebase Authentication - Secure user login/signup
• 💾 Chat History - Save and resume conversations
• 📱 Responsive Design - Works on desktop and mobile
• ⚡ Real-time Responses - Fast AI-powered replies using Groq

🛠️ Tech Stack

Frontend:

• React + Vite
• Tailwind CSS
• Firebase Authentication
• Axios for API calls

Backend:

• Node.js + Express
• Groq AI API (LLaMA 3.3)
• Firebase Admin SDK
• Rate limiting & Security headers

🔒 Security Features

• ✅ Firebase Authentication
• ✅ Rate limiting (100 req/15min)
• ✅ Helmet security headers
• ✅ CORS configuration
• ✅ Environment variable protection

📁 Project Structure

Echo/
├── backend/
│   ├── controllers/
│   │   └── chatController.js
│   ├── middleware/
│   │   ├── authMiddleware.js
│   │   └── verifyToken.js
│   ├── models/
│   │   ├── Conversation.js
│   │   └── User.js
│   ├── routes/
│   │   └── chatRoutes.js
│   ├── server.js
│   ├── package.json
│   └── README.md
│
├── frontend/
│   ├── public/
│   ├── src/
│   │   ├── components/
│   │   │   ├── Chat.jsx
│   │   │   ├── ChatHistory.jsx
│   │   │   ├── CodeBlock.jsx
│   │   │   ├── LogoutModal.jsx
│   │   │   ├── PersonaSelector.jsx
│   │   │   ├── Sidebar.jsx
│   │   │   ├── ThinkingIndicator.jsx
│   │   │   └── TypewriterText.jsx
│   │   ├── firebase.js
│   │   ├── firebaseConfig.js
│   │   ├── App.jsx
│   │   ├── main.jsx
│   │   └── index.css
│   ├── index.html
│   ├── package.json
│   ├── vite.config.js
│   └── tailwind.config.js
│
├── .gitignore
└── README.md

📦 Installation

Prerequisites

• Node.js 18+ and npm
• Firebase account
• Groq API key

1. Clone the repository

```bash git clone https://github.com/dipti-2211/Echo.git cd Echo ```

2. Backend Setup

```bash cd backend npm install

📄 License

MIT

👨‍💻 Author

Dipti

• GitHub: @dipti-2211
• Project: Echo

⭐ Star this repo if you find it useful!