💬 Chat System API

A scalable Chat Backend API built with ASP.NET Core and Clean Architecture.

Real-world backend architecture with authentication, authorization, validation, and real-time messaging design.

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✨ Features

👤 User Management

• User Registration
• Secure Identity Management
• Authentication-ready architecture (Login/Logout expansion ready)

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🔐 Authentication & Security

• JWT-based Authentication
• Secure token handling
• Protected API endpoints
• Extensible authorization system

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💬 Chat System (Architecture Design)

• Private messaging structure (in progress)
• Group chat support (planned)
• Real-time communication using SignalR
• Message history persistence
• Scalable chat domain design

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🛡️ Validation & Error Handling

• FluentValidation integration
• Centralized error handling
• Clean separation of concerns

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🗄️ Data Layer

• Entity Framework Core
• Repository pattern
• Clean separation of persistence and domain layers
• Scalable database architecture

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🏗️ Architecture

ChatSystem
│
├── Presentation Layer (API)
│   ├── Controllers
│   ├── Hubs
│   ├── DI
│
├── Application Layer
│   ├── UseCases
│   ├── DTOs
│   ├── Interfaces
│
├── Domain Layer
│   ├── Entities
│   ├── ValueObjects
│   ├── Enums
│   ├── Interfaces
│
├── Infrastructure Layer
│   ├── EF Core
│   ├── Repositories
│   ├── Services
│
└── Persistence
    └── SQL Server

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Built with ASP.NET Core • Clean Architecture • SignalR Ready