Simple web to domain/application interface

discussion.php

<?php

final class EmployeeProfileAction
{
    private $domain;
    private $responseHandler;
    
    public function __construct(
        EmployeeService                      $domain,
        ActiveEmployeeListingResponseHandler $responseHandler
    ) {
        $this->domain          = $domain;
        $this->responseHandler = $responseHandler;
    }
    
    public function handler(
                $employeeID,
        Request $request
    ) {
        $payload = $domain->getEmployeeProfile(new EmployeeID($employeeID));
        return $responseHandler->handle($request, $payload);
    }
}

// ---

final class EmployeeProfileResponseHandler
{
    private $response;

    public function __construct(
        EmployeeProfileResponse $response
    ) {
        $this->response = $response;
    }

    public function handle(
        Request $request,
        array   $payload = []
    ) {
        switch ($request->get('Accept')) {
            case 'application/json':
                return $this->response->json($payload, $request);
                break;

            case 'application/xml':
                return $this->response->xml($payload, $request);
                break;
            
            default:
                return $this->response->html($payload, $request);
                break;
        }
    }
}

// ---

final class EmployeeProfileResponse extends AbstractResponse implements ResponseInterface
{
    public function html(
        array   $payload =[],
        Request $request
    ) {
        return $this
            ->template
            ->render(
                '@path/to/my_view.twig.html',
                [
                    'payload' => $payload,
                ],
                [
                    'Content-Type' => 'text/html',
                ]
            );
    }

    public function json(
        array   $payload =[],
        Request $request
    ) {
        return $this
            ->template
            ->render(
                '@path/to/my_view.twig.json',
                [
                    'payload' => $payload,
                ],
                [
                    'Content-Type' => 'application/json',
                ]
            );
    }

    public function xml(
        array   $payload =[],
        Request $request
    ) {
        return $this
            ->template
            ->render(
                '@path/to/my_view.xml.html',
                [
                    'payload' => $payload,
                ],
                [
                    'Content-Type' => 'application/xml',
                ]
            );
    }
}

// ---

abstract class AbstractResponse
{
    private $template;

    public function __construct(
        TemplateAdaptor $template
    ) {
        $this->template = $template;
    }
}

// ---

interface ResponseInterface
{
    public function json(array $payload = [], Request $request);
    public function xml(array $payload = [], Request $request);
    public function html(array $payload = [], Request $request);
}