# C# Web API - Changelog

**Author:** RSK World (https://rskworld.in)  
**Founded by:** Molla Samser  
**Designer & Tester:** Rima Khatun  
**Contact:** +91 93305 39277, info@rskworld.com, support@rskworld.in  
**Location:** Nutanhat, Mongolkote, Purba Burdwan, West Bengal, India - 713147  
**Year:** 2026

## Version 1.0.0 - 2026-01-26

### 🎉 Initial Release

#### ✨ Features Added
- **Complete RESTful API** with proper HTTP methods and status codes
- **Entity Framework Core** integration with SQL Server
- **JWT Authentication** system with secure token generation
- **User Management** endpoints (CRUD operations)
- **Product Management** endpoints with user ownership validation
- **Comprehensive Error Handling** with custom middleware
- **Request Logging** middleware for monitoring and debugging
- **Swagger/OpenAPI** documentation for API exploration
- **CORS Support** for cross-origin requests
- **Repository Pattern** for data access abstraction
- **DTO Pattern** for secure data transfer
- **Password Hashing** using PBKDF2 with salt
- **Database Seeding** with default admin user and sample products

#### 🛠️ Technical Implementation
- **.NET Core 8.0** framework
- **Clean Architecture** with Core, Infrastructure, and API layers
- **Dependency Injection** configuration
- **Configuration Management** with appsettings.json
- **Docker Support** with Dockerfile and docker-compose.yml
- **Unit Testing** with xUnit and Moq
- **Git Version Control** with comprehensive .gitignore

#### 📁 Project Structure
```
CSharpWebApi/
├── Controllers/           # API Controllers
├── Core/                 # Core entities, DTOs, interfaces
├── Infrastructure/        # Data access and repositories
├── Middleware/           # Custom middleware
├── Services/             # Business logic services
├── Tests/               # Unit tests
├── Properties/          # Assembly information
└── Documentation/       # README, CHANGELOG, etc.
```

#### 🔐 Security Features
- JWT token-based authentication
- Secure password hashing with salt
- User authorization and ownership validation
- Input validation and sanitization
- CORS configuration
- SQL injection prevention through Entity Framework

#### 📊 API Endpoints

**Authentication:**
- `POST /api/auth/register` - Register new user
- `POST /api/auth/login` - User login
- `GET /api/auth/user` - Get current user info

**Users:**
- `GET /api/users` - Get all users
- `GET /api/users/{id}` - Get user by ID
- `PUT /api/users/{id}` - Update user
- `DELETE /api/users/{id}` - Delete user

**Products:**
- `GET /api/products` - Get all products
- `GET /api/products/{id}` - Get product by ID
- `POST /api/products` - Create product
- `PUT /api/products/{id}` - Update product
- `DELETE /api/products/{id}` - Delete product
- `GET /api/products/my-products` - Get user's products

#### 🐳 Docker Support
- Multi-stage Docker build
- SQL Server container integration
- Environment-specific configurations
- Volume mounting for persistent data

#### 🧪 Testing
- Unit tests for controllers
- Service layer testing
- Mock-based testing with Moq
- Test coverage for authentication and business logic

#### 📚 Documentation
- Comprehensive README with API documentation
- Swagger/OpenAPI integration
- Code comments with RSK World attribution
- Setup and deployment instructions

#### 🎯 Default Credentials
- **Username:** admin
- **Email:** admin@rskworld.in
- **Password:** Admin123!

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## 🚀 Future Enhancements (Planned)

### Version 1.1.0
- [ ] Role-based authorization
- [ ] Email verification
- [ ] Password reset functionality
- [ ] File upload support
- [ ] API rate limiting
- [ ] Caching implementation
- [ ] Health checks endpoint

### Version 1.2.0
- [ ] SignalR integration for real-time features
- [ ] Background job processing
- [ ] Advanced search and filtering
- [ ] API versioning
- [ ] Performance monitoring
- [ ] Advanced logging with structured logs

### Version 2.0.0
- [ ] Microservices architecture
- [ ] GraphQL support
- [ ] Multi-tenant support
- [ ] Advanced security features
- [ ] Cloud deployment templates

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## 🐛 Bug Fixes

### Version 1.0.0
- No known issues at release

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## 📞 Support

For any questions, bug reports, or feature requests, please contact:

- **Email:** help@rskworld.in
- **Phone:** +91 93305 39277
- **Website:** https://rskworld.in

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**© 2026 RSK World. All rights reserved.**  
*Content used for educational purposes only.*
