# DatureTech Authentication Library

The **DatureTech Authentication Library** provides an easy-to-use authentication solution for Express.js applications. It integrates with **Auth0** and provides middleware for handling authentication and authorization.

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## **Features**
- 🚀 Simple middleware integration for authentication.
- 🔐 Secure token verification using **Auth0**.
- ✅ Role-based authorization support.
- 📦 Lightweight and easy to install.

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## **Installation**
You can install the library via **npm**:

```sh
npm install daturetech-auth-library

If using a local package reference:

npm install file:../daturetech-auth-library/dist

Usage

1. Import the Library

In your Express.js application, import and initialize the authentication middleware:

import express from "express";
import { AuthMiddleware } from "daturetech-auth-library";

const app = express();

// Initialize authentication middleware
const authMiddleware = new AuthMiddleware({
  domain: process.env.AUTH0_DOMAIN,
  audience: process.env.AUTH0_AUDIENCE,
});

app.use(authMiddleware.protect()); // Apply authentication globally

app.get("/protected-route", authMiddleware.protect(), (req, res) => {
  res.json({ message: "You have accessed a protected route!" });
});

app.listen(5000, () => console.log("Server running on port 5000"));

Configuration

Ensure you have the required environment variables set in your .env file:

AUTH0_DOMAIN=your-auth0-domain
AUTH0_AUDIENCE=your-auth0-audience

API Reference

authMiddleware.protect()

Middleware function that protects routes by verifying the user's JWT.

app.use(authMiddleware.protect());

authMiddleware.checkRole(role: string)

Middleware function to restrict access based on user roles.

app.get("/admin", authMiddleware.checkRole("admin"), (req, res) => {
  res.json({ message: "Welcome, Admin!" });
});

Development & Contribution

1. Clone the repository:

   git clone https://github.com/MattyGT/daturetech-auth-library.git

2. Install dependencies:

   npm install

3. Build the library:

   npm run build

4. Run tests:

   npm test

Publishing the Package

To publish updates to npm, follow these steps:

1. Bump the version in package.json:

   npm version patch

2. Publish the package:

   npm publish --access public

License

This project is licensed under the MIT License.

Support

For issues, please open a GitHub issue in the repository.

This provides a professional and comprehensive `README.md` that covers installation, usage, API references, and contribution guidelines. Let me know if you need any modifications! 🚀