clean-architecture-validator

Included with Lifetime

$97 forever

Validate .NET API project structure follows Clean Architecture with proper layer separation and dependencies

Backend & APIs

What this skill does


# Clean Architecture Validator Skill

Use this skill to validate that a .NET API project follows StyleMate's Clean Architecture standards with proper layer separation and dependencies.

## When to Use
- After creating a new .NET API project
- When refactoring an existing API
- During code reviews
- Troubleshooting dependency issues
- Ensuring architectural compliance

## What This Skill Does

### 1. Structure Validation
Checks for required directories:
- `Domain/` (no dependencies)
- `Application/` (depends on Domain only)
- `Infrastructure/` (implements interfaces)
- `Controllers/` (orchestration layer)

### 2. Dependency Analysis
Validates that:
- Domain has NO dependencies on other layers
- Application depends only on Domain
- Infrastructure implements Domain/Application interfaces
- Controllers depend on all layers for orchestration
- No circular dependencies exist

### 3. Entity Validation
Ensures Domain entities:
- Contain business logic
- Have proper value objects
- Define domain interfaces
- Use proper encapsulation

### 4. Service Layer Check
Validates Application services:
- Define clear DTOs
- Implement business workflows
- Use dependency injection properly
- Return appropriate types (not entities)

### 5. Infrastructure Compliance
Checks Infrastructure layer:
- Proper DbContext configuration
- Repository pattern implementation
- External service integrations
- Configuration management

## Expected Inputs
- Path to the .NET API project
- Context name for the service

## Deliverables
- Validation report with pass/fail status
- List of violations with recommendations
- Suggested refactoring steps (if needed)
- Compliance checklist

## Example Usage
```
Please validate the staff-api project structure to ensure it follows Clean Architecture.
The project is located at ./staff/staff-api/
```

## Validation Checklist

### Domain Layer ✓
- [ ] Entities/ directory exists with domain models
- [ ] Interfaces/ directory for domain contracts
- [ ] No dependencies on other layers
- [ ] Business logic in entities
- [ ] Value objects properly defined

### Application Layer ✓
- [ ] DTOs/ directory for data transfer
- [ ] Services/ directory for business workflows
- [ ] Interfaces/ for service contracts
- [ ] Only depends on Domain layer
- [ ] No infrastructure concerns

### Infrastructure Layer ✓
- [ ] Data/ directory with DbContext
- [ ] Repositories/ implementing domain interfaces
- [ ] Services/ for external integrations
- [ ] Implements Application/Domain interfaces
- [ ] EF Core configurations present

### API Layer (Controllers) ✓
- [ ] Controllers orchestrate workflow
- [ ] Proper routing with [Route] attributes
- [ ] JWT authorization on endpoints
- [ ] Input validation with FluentValidation
- [ ] Returns DTOs, not entities

### Configuration ✓
- [ ] Program.cs properly configures DI
- [ ] appsettings.json has required sections
- [ ] Middleware pipeline configured
- [ ] Health checks implemented
- [ ] Swagger with JWT scheme

## Common Violations

### ❌ Domain depending on Infrastructure
```csharp
// WRONG: Domain referencing DbContext
using Infrastructure.Data;

public class Employee
{
    public void Save(AppDbContext context) { } // ❌
}
```

### ✓ Correct Domain
```csharp
// CORRECT: Domain with no dependencies
public class Employee
{
    public Guid Id { get; private set; }
    public string Name { get; private set; }

    // Business logic only
    public void UpdateName(string newName)
    {
        if (string.IsNullOrWhiteSpace(newName))
            throw new ArgumentException("Name required");
        Name = newName;
    }
}
```

### ❌ Returning Entities from Controllers
```csharp
// WRONG: Exposing domain entities
[HttpGet]
public async Task<Employee> Get(Guid id) // ❌
{
    return await _service.GetEmployee(id);
}
```

### ✓ Correct Controller Pattern
```csharp
// CORRECT: Returning DTOs
[HttpGet]
public async Task<EmployeeDto> Get(Guid id) // ✓
{
    return await _service.GetEmployee(id);
}
```

## Remediation Steps
When violations found:
1. Identify the violating layer
2. Move code to appropriate layer
3. Define interfaces where needed
4. Update dependency injection
5. Revalidate structure

Files: 1

Size: 4.2 KB

Complexity: 7/100

Category: Backend & APIs

Source: https://github.com/usmanali4073/stylemate-plugins/tree/main/stylemate-architecture/skills/clean-architecture-validator

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