MinimalCleanArch.Validation 0.1.5

MinimalCleanArch

A comprehensive library for implementing Clean Architecture with Minimal API in .NET 9. It offers a solid foundation with built-in support for repositories, unit of work, specifications, domain-driven design patterns, security features like data encryption, and extensions for modern ASP.NET Core development.

🚀 Core Features

• Clean Architecture Foundation: Robust base classes and interfaces for domain entities, repositories, specifications, and the unit of work pattern.
• Minimal API Extensions: Streamline your Minimal API development with integrated FluentValidation, standardized error handling, and OpenAPI response definitions.
• Security & Encryption: Protect sensitive data with column-level encryption using either the Microsoft Data Protection API (recommended) or AES. Includes helpers for key management and EF Core integration.
• Soft Delete & Auditing: Automatically manage IsDeleted flags and track CreatedAt, CreatedBy, LastModifiedAt, LastModifiedBy for entities.
• Specification Pattern: Encapsulate complex query logic into reusable and testable specification objects, promoting cleaner data access.
• Result Pattern: Enhance error handling with a type-safe Result<T> pattern, reducing reliance on exceptions for control flow.
• Entity Framework Integration: Provides EF Core implementations for repositories, unit of work, and automated handling of auditing, soft delete, and encryption.

📦 Packages

🔧 Quick Start

1. Install Packages:

   dotnet add package MinimalCleanArch
   dotnet add package MinimalCleanArch.DataAccess
   dotnet add package MinimalCleanArch.Extensions
   dotnet add package MinimalCleanArch.Security
   

2. Define Domain Entity (e.g., Todo.cs):

   using MinimalCleanArch.Domain.Entities;
   using MinimalCleanArch.Domain.Exceptions;
   using MinimalCleanArch.Security.Encryption;
   
   public class Todo : BaseSoftDeleteEntity // Includes Id, Auditing, SoftDelete
   {
       public string Title { get; private set; }
       [Encrypted] public string Description { get; private set; } // Will be encrypted
       public int Priority { get; private set; }
       public DateTime? DueDate { get; private set; }
       public bool IsCompleted { get; private set; }
   
       private Todo() { /* Required for EF Core */ }
       public Todo(string title, string description, int priority = 0, DateTime? dueDate = null)
       {
           SetTitle(title);
           Description = description ?? string.Empty;
           SetPriority(priority);
           DueDate = dueDate;
       }
       // Methods like Update, MarkAsCompleted, SetTitle, SetPriority...
       public void SetTitle(string title) {
           if (string.IsNullOrWhiteSpace(title)) throw new DomainException("Title is required.");
           Title = title;
       }
       public void SetPriority(int priority) {
           if (priority < 0 || priority > 5) throw new DomainException("Priority must be 0-5.");
           Priority = priority;
       }
   }
   

3. Create DbContext (e.g., ApplicationDbContext.cs):

   using Microsoft.EntityFrameworkCore;
   using Microsoft.AspNetCore.Http; // For IHttpContextAccessor
   using System.Security.Claims;     // For ClaimTypes
   using MinimalCleanArch.DataAccess;
   using MinimalCleanArch.Security.Encryption;
   using MinimalCleanArch.Security.EntityEncryption; // For UseEncryption extension
   // using YourProject.Domain.Entities;
   
   public class ApplicationDbContext : DbContextBase // Handles Auditing & Soft Delete
   {
       private readonly IEncryptionService _encryptionService;
       private readonly IHttpContextAccessor? _httpContextAccessor;
   
       public DbSet<Todo> Todos => Set<Todo>();
   
       public ApplicationDbContext(DbContextOptions<ApplicationDbContext> options,
                                   IEncryptionService encryptionService,
                                   IHttpContextAccessor? httpContextAccessor = null)
           : base(options)
       {
           _encryptionService = encryptionService;
           _httpContextAccessor = httpContextAccessor;
       }
   
       protected override void OnModelCreating(ModelBuilder modelBuilder)
       {
           modelBuilder.Entity<Todo>(entity => { /* Configure Todo entity */ });
           modelBuilder.UseEncryption(_encryptionService); // Apply [Encrypted] attribute handling
           base.OnModelCreating(modelBuilder); // Applies soft delete filters
       }
   
       protected override string? GetCurrentUserId() =>
           _httpContextAccessor?.HttpContext?.User?.FindFirstValue(ClaimTypes.NameIdentifier) ?? "system";
   }
   

4. Configure Services (Program.cs):

   using Microsoft.EntityFrameworkCore;
   using MinimalCleanArch.DataAccess.Extensions;
   using MinimalCleanArch.Security.Extensions;
   using MinimalCleanArch.Extensions.Extensions;
   using MinimalCleanArch.Extensions.Middlewares;
   // using YourProject.Infrastructure.Data;
   // using YourProject.Application.Validation; // For validator assembly scanning
   
   var builder = WebApplication.CreateBuilder(args);
   var connString = builder.Configuration.GetConnectionString("DefaultConnection");
   
   // Encryption (Choose one, Data Protection recommended)
   builder.Services.AddDataProtectionEncryptionForDevelopment("YourAppName"); //
   // Or: builder.Services.AddEncryption(new EncryptionOptions { Key = "YOUR_SECURE_AES_KEY" });
   
   builder.Services.AddHttpContextAccessor(); // For GetCurrentUserId in DbContext
   
   // MinimalCleanArch: DbContext, Repositories, UnitOfWork
   builder.Services.AddMinimalCleanArch<ApplicationDbContext>(opt => opt.UseSqlServer(connString));
   
   // Validation & API Extensions
   builder.Services.AddValidatorsFromAssemblyContaining<Program>(); // Or a specific validator type
   builder.Services.AddMinimalCleanArchExtensions();
   
   builder.Services.AddEndpointsApiExplorer();
   builder.Services.AddSwaggerGen();
   
   var app = builder.Build();
   
   if (app.Environment.IsDevelopment())
   {
       app.UseSwagger();
       app.UseSwaggerUI();
       // Seed DB or apply migrations
       using var scope = app.Services.CreateScope();
       var db = scope.ServiceProvider.GetRequiredService<ApplicationDbContext>();
       db.Database.EnsureCreated(); // For sample; use migrations in production
   }
   app.UseMiddleware<ErrorHandlingMiddleware>(); // Global error handling
   // Map endpoints...
   app.Run();
   

5. Create API Endpoints with validation and error handling:

   // using YourProject.Domain.Entities;
   // using YourProject.API.Models; // For CreateTodoRequest, TodoResponse DTOs
   // using MinimalCleanArch.Repositories;
   // using MinimalCleanArch.Extensions.Extensions;
   
   public static IEndpointRouteBuilder MapMyEndpoints(this IEndpointRouteBuilder app)
   {
       app.MapPost("/todos", async (CreateTodoRequest req, IRepository<Todo> repo, IUnitOfWork uow) =>
       {
           var todo = new Todo(req.Title, req.Description, req.Priority, req.DueDate);
           await repo.AddAsync(todo);
           await uow.SaveChangesAsync();
           return Results.Created($"/todos/{todo.Id}", TodoResponse.FromEntity(todo));
       })
       .WithValidation<CreateTodoRequest>()
       .WithErrorHandling()
       .WithStandardResponses<TodoResponse>();
       return app;
   }
   // Define CreateTodoRequest and TodoResponse DTOs
   public record CreateTodoRequest(string Title, string Description, int Priority, DateTime? DueDate);
   public record TodoResponse(int Id, string Title, string Description, bool IsCompleted, int Priority, DateTime? DueDate, DateTime CreatedAt)
   {
       public static TodoResponse FromEntity(Todo todo) =>
           new(todo.Id, todo.Title, todo.Description, todo.IsCompleted, todo.Priority, todo.DueDate, todo.CreatedAt);
   }
   

📖 Sample Application & Documentation

• Sample Project: A comprehensive sample application is available in the /samples/MinimalCleanArch.Sample directory.
• Documentation: Detailed documentation is generated using DocFX and can be found in the /docs directory (link to hosted docs coming soon).

🤝 Contributing

Contributions are welcome! Please read our Contributing Guide.

📄 License

This project is licensed under the MIT License. See the LICENSE file for details.

MinimalCleanArch - Clean Architecture made simple for .NET developers.