🚀 Nexus Core - Enterprise Knowledge & Workflow Orchestration Platform

Production-Ready | Security-First | Fully Audited | Docker-Native

📋 Overview

Nexus Core is an enterprise-grade platform combining knowledge management with powerful workflow automation. Built with security, scalability, and performance in mind.

✨ Core Features

• 🔐 Enterprise Security

  • JWT-based authentication with refresh tokens
  • Argon2 password hashing
  • MFA support (TOTP)
  • Account lockout protection
  • Role-based access control (RBAC)
  • Comprehensive audit logging

• 📝 Knowledge Management

  • Rich text notes with version history
  • Notebook organization with hierarchy
  • Tag-based categorization
  • Knowledge graph with link detection
  • Collaborative comments
  • Full-text search ready

• ⚡ Workflow Engine

  • Visual workflow builder
  • Multiple trigger types (manual, scheduled, webhook, event)
  • Step-by-step execution tracking
  • Retry logic with configurable limits
  • Webhook integrations

• 🏗️ Architecture

  • FastAPI backend (Python 3.11+)
  • React 18 frontend (TypeScript)
  • PostgreSQL database with async drivers
  • Redis caching & session store
  • Docker & Docker Compose deployment
  • Health checks & monitoring ready

🚀 Quick Start

Prerequisites

• Docker & Docker Compose
• Git

Installation

# Clone repository
git clone https://github.com/your-org/nexus-core.git
cd nexus-core

# Start all services
docker-compose up -d

# View logs
docker-compose logs -f

Access Points

• Frontend: http://localhost:3000
• Backend API: http://localhost:8000
• API Documentation: http://localhost:8000/docs (dev mode)
• Health Check: http://localhost:8000/health

📁 Project Structure

nexus-core/
├── README.md                    # Complete documentation
├── docker-compose.yml           # Service orchestration
│
├── backend/                     # FastAPI Backend (Python 3.11+)
│   ├── Dockerfile
│   ├── requirements.txt         # Python dependencies
│   └── app/
│       ├── main.py              # Application entry point
│       ├── __init__.py
│       │
│       ├── api/                 # API Layer
│       │   ├── __init__.py
│       │   └── v1/
│       │       ├── __init__.py
│       │       └── endpoints/
│       │           ├── __init__.py
│       │           ├── auth.py  # Authentication endpoints
│       │           └── notes.py # Note management endpoints
│       │
│       ├── core/                # Core Configuration & Security
│       │   ├── __init__.py
│       │   ├── config.py        # Environment configuration
│       │   ├── security.py      # JWT, MFA, password hashing
│       │   └── rate_limiter.py  # Redis-based rate limiting
│       │
│       ├── db/                  # Database Layer
│       │   ├── __init__.py
│       │   └── session.py       # Async session management
│       │
│       ├── models/              # ORM Models
│       │   ├── __init__.py
│       │   └── entities.py      # User, Note, AuditLog models
│       │
│       ├── services/            # Business Logic
│       │   └── __init__.py
│       │
│       └── utils/               # Utility Functions
│           └── __init__.py
│
├── frontend/                    # React 18 Frontend (TypeScript)
│   ├── Dockerfile
│   ├── index.html
│   ├── package.json
│   ├── vite.config.ts
│   ├── tsconfig.json
│   ├── tsconfig.node.json
│   ├── tailwind.config.js
│   ├── postcss.config.js
│   ├── .eslintrc.cjs
│   ├── nginx.conf               # Production nginx config
│   └── src/
│       ├── main.tsx             # React entry point
│       ├── App.tsx              # Root component
│       ├── index.css            # Global styles
│       │
│       ├── components/          # Reusable UI components
│       ├── pages/               # Page components
│       ├── hooks/               # Custom React hooks
│       │   └── index.ts
│       │
│       ├── services/            # API clients
│       │   ├── index.ts
│       │   └── api.ts           # HTTP client configuration
│       │
│       ├── store/               # State management
│       │   ├── index.ts
│       │   └── authStore.ts     # Authentication state
│       │
│       ├── types/               # TypeScript type definitions
│       │   └── index.ts
│       │
│       └── utils/               # Helper utilities
│           └── index.ts
│
├── docker/                      # Docker Configuration
│   └── init.sql                 # PostgreSQL initialization script
│
└── scripts/                     # Operational Scripts (optional)

Total Files: 42 production-ready files

🔧 Configuration

Environment variables (via .env or Docker):

Variable	Default	Description
SECRET_KEY	auto-generated	JWT signing key
DATABASE_URL	postgresql+asyncpg://...	Database connection
REDIS_URL	redis://...	Redis connection
DEBUG	false	Debug mode
LOG_LEVEL	INFO	Logging level
ENABLE_MFA	true	MFA feature flag
ENABLE_AUDIT_LOG	true	Audit logging

🛡️ Security Features

1. Password Policy

   • Minimum 12 characters
   • Uppercase, lowercase, digit, special character required
   • Argon2id hashing

2. Account Protection

   • Max 5 login attempts before 30-minute lockout
   • Session timeout after 60 minutes
   • Refresh token rotation

3. API Security

   • CORS configuration
   • Rate limiting ready
   • CSRF protection
   • Structured logging

4. Audit Trail

   • All authentication events logged
   • Resource changes tracked
   • IP addresses recorded
   • Immutable log storage

📊 API Endpoints

Authentication

• POST /api/v1/auth/register - Register new user
• POST /api/v1/auth/login - Login
• POST /api/v1/auth/refresh - Refresh token
• GET /api/v1/auth/me - Get current user

Notes (Coming Soon)

• GET /api/v1/notes - List notes
• POST /api/v1/notes - Create note
• PUT /api/v1/notes/{id} - Update note
• DELETE /api/v1/notes/{id} - Delete note

Workflows (Coming Soon)

• GET /api/v1/workflows - List workflows
• POST /api/v1/workflows - Create workflow
• POST /api/v1/workflows/{id}/execute - Execute workflow

🧪 Testing

# Run backend tests
cd backend
pytest -v --cov=app

# Run with coverage report
pytest --cov=app --cov-report=html

📈 Production Deployment

Recommendations

1. Change default secrets

   export SECRET_KEY=$(openssl rand -hex 64)

2. Use external database

   • Configure managed PostgreSQL (AWS RDS, Google Cloud SQL)
   • Enable SSL connections

3. Enable HTTPS

   • Use reverse proxy (nginx, Traefik)
   • Configure SSL certificates

4. Monitoring

   • Prometheus metrics endpoint
   • Health check integration
   • Log aggregation (ELK, Loki)

🤝 Contributing

1. Fork the repository
2. Create feature branch (git checkout -b feature/amazing-feature)
3. Commit changes (git commit -m 'Add amazing feature')
4. Push to branch (git push origin feature/amazing-feature)
5. Open Pull Request

📄 License

MIT License - see LICENSE file for details

🙏 Acknowledgments

Built with:

• FastAPI
• React
• PostgreSQL
• Redis

---

Nexus Core - Where Knowledge Meets Automation