practice-of-clean-architecture.cs

public class UserCreateInteractor : IUserCreateUseCase {
  private readonly IUserRepository userRepository;

  public UserCreateInteractor(IUserRepository userRepository){
    this.userRepository = userRepository;
  }

  public UserCreateResponse Handle(UserCreateRequest request){ // ← ここに処理が流れてくる
    var username = request.UserName;
    var duplicateUser = userRepository.FindByUserName(username);
    if(duplicateUser != null){
      throw new Exception("duplicated");
    }
    
    var user = new User(username);
    userRepository.Save(user);
    
    return new UserCreateResponse(user.Id);
  }
}