🔐 Auth Service Overview

Purpose: Manages authentication logic including login, password hashing, token generation, and validation for the system.

Project Path: user-auth-microservices/auth-service

Architecture Pattern:

• Domain-Driven Design (DDD)
• Onion Architecture
• Clean Architecture principles

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🧱 Core DDD Components

• Entity: LoginSession.cs Represents the user's login session metadata/
• Value Objects Could include HashedPassword, JwtToken, etc
• Use Cases (Application Layer): -LoginUserHandler.cs -ValidateTokenHandler.cs -GenerateTokenHandler.cs
• DTOs Used in the API for request/response models.

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🔄 User Service Relationship

This service authenticates users registered in the user-service.

Concern	Handled by
Credential Validation	auth-service
Token creation & refresh	auth-service
User profile data	user-service

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🔍 Testing Strategy

• Unit Tests: Token logic, uses case flows
• Integration Tests: Token validation with mocked user data
• Uses Arrange-Act-Assert(AAA) methodology

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🛠️ Tools & Technologies

• .NET 8 / ASP.NET Core Web API
• JWT for token management
• Entity Framework Core
• xUnit for testing
• Docker