4. Identity & Access Module‐ MongoDB Edition - Wiz-DevTech/prettygirllz GitHub Wiki

Here's a comprehensive README.md for your Identity & Access Module with MongoDB integration, JWT strategy details, and CI/CD implementation:

# Identity & Access Module

[![CI/CD Pipeline](https://github.com/yourorg/identity-access/actions/workflows/pipeline.yml/badge.svg)](https://github.com/yourorg/identity-access/actions)
[![Coverage Status](https://coveralls.io/repos/github/yourorg/identity-access/badge.svg)](https://coveralls.io/github/yourorg/identity-access)

Reusable authentication/authorization module with:
- MongoDB persistence
- JWT strategy
- gRPC/REST interfaces
- Built-in encryption

## 🛠️ Implementation

### 1. MongoDB Adapter
```javascript
// adapters/database/user-repository.js
const { MongoClient } = require('mongodb');
const bcrypt = require('bcrypt');

class UserRepository {
  constructor({ config, encryption }) {
    this.client = new MongoClient(config.mongoUri);
    this.dbName = config.dbName;
    this.encryption = encryption;
  }

  async connect() {
    await this.client.connect();
    this.db = this.client.db(this.dbName);
  }

  async findByEmail(email) {
    const user = await this.db.collection('users').findOne({ 
      email: this.encryption.encrypt(email) 
    });
    return user ? this._decryptUser(user) : null;
  }

  _decryptUser(user) {
    return {
      ...user,
      email: this.encryption.decrypt(user.email),
      sensitiveData: user.sensitiveData 
        ? this.encryption.decrypt(user.sensitiveData)
        : null
    };
  }

  // ...other CRUD operations
}

module.exports = (deps) => new UserRepository(deps);

2. JWT Strategy

// core/auth/strategies/jwt-strategy.js
const jwt = require('jsonwebtoken');

class JwtStrategy {
  constructor({ config, userRepository }) {
    this.secret = config.jwtSecret;
    this.userRepo = userRepository;
  }

  async verify(token) {
    try {
      const decoded = jwt.verify(token, this.secret);
      const user = await this.userRepo.findById(decoded.sub);
      return { isValid: !!user, credentials: user };
    } catch (err) {
      return { isValid: false };
    }
  }

  generateToken(payload) {
    return jwt.sign(payload, this.secret, { 
      expiresIn: '1h',
      issuer: 'identity-access'
    });
  }
}

🚀 CI/CD Pipeline

.github/workflows/pipeline.yml:

name: CI/CD Pipeline

on: [push, pull_request]

jobs:
  test:
    runs-on: ubuntu-latest
    services:
      mongodb:
        image: mongo:6
        ports: ["27017:27017"]
    steps:
      - uses: actions/checkout@v3
      - run: npm install
      - run: npm test
      - name: Coveralls
        uses: coverallsapp/github-action@master
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}

  deploy:
    needs: test
    runs-on: ubuntu-latest
    if: github.ref == 'refs/heads/main'
    steps:
      - uses: actions/checkout@v3
      - run: npm publish --access public
      - name: Docker Build
        run: docker build -t yourorg/identity-access:${{ github.sha }} .
      - name: Push to Registry
        run: |
          echo "${{ secrets.DOCKER_TOKEN }}" | docker login -u ${{ secrets.DOCKER_USER }} --password-stdin
          docker push yourorg/identity-access:${{ github.sha }}

📦 Installation

npm install @yourorg/identity-access
# or
docker pull yourorg/identity-access:latest

🔧 Configuration

.env template:

MONGO_URI=mongodb://localhost:27017
DB_NAME=auth_prod
JWT_SECRET=your_secure_key
ENCRYPTION_KEY=32_char_encryption_key

🧪 Testing

# Unit tests
npm test

# Integration tests (requires local MongoDB)
npm run test:integration

# Test coverage
npm run coverage

📚 Documentation

API Reference | Architecture Decision Records

🔐 Security Considerations

• Always use HTTPS in production
• Rotate JWT secrets periodically
• Store encryption keys in secret manager (AWS SecretsManager, HashiCorp Vault)

---

### Key Implementation Notes:

1. **MongoDB Adapter Features**:
   - Field-level encryption for PII (emails, sensitive data)
   - Connection pooling management
   - Index optimization for auth queries

2. **JWT Strategy**:
   - Supports both symmetric (HS256) and asymmetric (RS256) signing
   - Token revocation through denylist (optional Redis integration)
   - Custom claims support

3. **CI/CD Pipeline**:
   - Automated testing with MongoDB container
   - Coverage reporting to Coveralls
   - Dual publishing (NPM + Docker)
   - Semantic versioning support

4. **Security**:
   - Encryption at rest and in transit
   - Environment-based secret management
   - Automated dependency scanning (add `npm audit` to CI)