Task: Create a Clean Architecture and Implement a REST API with CRUD Operations

[abdullahkhanjmm]

---

Task: Create a Clean Architecture and Implement a REST API with CRUD Operations

Overview

In this task, you will set up a .NET project using the principles of Clean Architecture. You will create a RESTful API with CRUD operations, ensuring a clear separation of concerns and maintainability of the codebase.

Clean Architecture Layers

1. Core (Domain) Layer:

   • Entities: Business models that are independent of any framework or technology.
   • Interfaces: Abstractions for services and repositories.
   • Domain Services: Business logic that doesn't belong to a specific entity.

2. Application Layer:

   • DTOs (Data Transfer Objects): Models for transferring data between layers.
   • Services/Use Cases: Application-specific business logic.
   • Interfaces Implementation: Implementation of domain interfaces.

3. Infrastructure Layer:

   • Data Access: Repositories and data context for interacting with the database.
   • External Services: Integration with external APIs or services.
   • Configuration: Application configuration and settings.

4. Presentation (API) Layer:

   • Controllers: API endpoints to handle HTTP requests and responses.
   • Models: API request and response models.
   • Mapping: AutoMapper profiles for converting between domain models and DTOs.

Steps

1. Setup the Project

1. Install .NET SDK: Ensure you have the latest .NET SDK installed on your machine.
2. Create a Solution: Open a terminal or command prompt and create a new solution.

   dotnet new sln -n CleanArchitectureDemo
   cd CleanArchitectureDemo

2. Create Project Structure

1. Create Projects:

   • Core: Contains entities, interfaces, and domain services.

     dotnet new classlib -n CleanArchitectureDemo.Core
     dotnet sln add CleanArchitectureDemo.Core/CleanArchitectureDemo.Core.csproj

   • Application: Contains application services and DTOs.

     dotnet new classlib -n CleanArchitectureDemo.Application
     dotnet sln add CleanArchitectureDemo.Application/CleanArchitectureDemo.Application.csproj

   • Infrastructure: Contains data access implementations and external services.

     dotnet new classlib -n CleanArchitectureDemo.Infrastructure
     dotnet sln add CleanArchitectureDemo.Infrastructure/CleanArchitectureDemo.Infrastructure.csproj

   • API: The presentation layer with controllers and API configurations.

     dotnet new webapi -n CleanArchitectureDemo.API
     dotnet sln add CleanArchitectureDemo.API/CleanArchitectureDemo.API.csproj

2. Add Project References:

   • Reference Core in Application:

     dotnet add CleanArchitectureDemo.Application/CleanArchitectureDemo.Application.csproj reference CleanArchitectureDemo.Core/CleanArchitectureDemo.Core.csproj

   • Reference Application and Core in Infrastructure:

     dotnet add CleanArchitectureDemo.Infrastructure/CleanArchitectureDemo.Infrastructure.csproj reference CleanArchitectureDemo.Application/CleanArchitectureDemo.Application.csproj
     dotnet add CleanArchitectureDemo.Infrastructure/CleanArchitectureDemo.Infrastructure.csproj reference CleanArchitectureDemo.Core/CleanArchitectureDemo.Core.csproj

   • Reference Application, Core, and Infrastructure in API:

     dotnet add CleanArchitectureDemo.API/CleanArchitectureDemo.API.csproj reference CleanArchitectureDemo.Application/CleanArchitectureDemo.Application.csproj
     dotnet add CleanArchitectureDemo.API/CleanArchitectureDemo.API.csproj reference CleanArchitectureDemo.Core/CleanArchitectureDemo.Core.csproj
     dotnet add CleanArchitectureDemo.API/CleanArchitectureDemo.API.csproj reference CleanArchitectureDemo.Infrastructure/CleanArchitectureDemo.Infrastructure.csproj

3. Implementing Layers

1. Core Layer:

   • Create entity classes.
   • Define repository interfaces.

2. Application Layer:

   • Create DTOs for transferring data.
   • Implement application services and business logic.

3. Infrastructure Layer:

   • Implement repository classes using Entity Framework Core.
   • Configure database context and external service integrations.

4. API Layer:

   • Create controllers for handling HTTP requests.
   • Define endpoints for CRUD operations.
   • Configure AutoMapper for model mapping.
   • Set up dependency injection for services and repositories.

4. Implement CRUD Operations

1. Create:

   • Define HTTP POST endpoint in the controller.
   • Implement service method to handle creation logic.

2. Read:

   • Define HTTP GET endpoints (single item and list) in the controller.
   • Implement service methods to handle fetching data.

3. Update:

   • Define HTTP PUT endpoint in the controller.
   • Implement service method to handle update logic.

4. Delete:

   • Define HTTP DELETE endpoint in the controller.
   • Implement service method to handle deletion logic.

Deliverables

• A .NET solution with Clean Architecture structure.
• A RESTful API with complete CRUD operations.

---

This task description provides a clear overview and detailed steps for setting up a .NET project with Clean Architecture and implementing a RESTful API with CRUD operations.

[JMMAwais]

https://github.com/JMMAwais/CleanArchitecture

[asifaliwork]

https://github.com/asifaliwork/CleanArchitectureDemo-net8.0-