namespace Interaction;
use Request;
use Response;
use RepositoryInterface;
use Validator;
use ValidationObject;

class Interaction{
public function __construct(Repository $repository,Valdiator $validator){
$this->repository = $repository;
$this->validator = $validaotr;
}
public function invoke(Request $request){
$validationObject = new ValidationObject();
$validationObject->isUniqueUsername = !$this->repository->findByUsername($request->getUsername());
$this->validator->setObject($validationObject);
if($this->validator->isValid()){
$newId = $this->repository->getFreeID();
$newEntity = $this->repository->createEntity($newId,$request->getUsername());
$this->repository->add($newEntity);
return new Response($newEntity);
}else{
throw new \Exception;
}
}
}