private function checkUserStatus()
 {
     $loginDAL = new LoginDAL();
     $loginView = new LoginView($loginDAL);
     $masterView = new MasterView($loginDAL, $loginView);
     $isInputValidated = $loginView->getIsInputValidated();
     if (!$loginDAL->isUserLoggedIn()) {
         //user wants to start login process or enters input data that is not valid
         if ($masterView->userClickedLogin() || $loginView->userSubmitsLoginData() && !$isInputValidated) {
             $masterView->renderTemplateHTML($loginView->showLoginFrom());
         } else {
             if ($loginView->userSubmitsLoginData() && $isInputValidated) {
                 $loginController = new LoginController();
                 $loggedIn = $loginController->checkUserCredentials($loginView, $loginDAL);
                 if ($loggedIn) {
                     //if user is found in database
                     return new KustAdminController($masterView, $loginDAL);
                 } else {
                     $masterView->renderTemplateHTML($loginView->showLoginFrom());
                 }
             } else {
                 //if none of the above keep going back to StartView
                 $startView = new StartView();
                 $masterView->renderTemplateHTML($startView->showHomeView($loginDAL->isUserLoggedIn()));
             }
         }
     } else {
         if ($masterView->userClickedLogout()) {
             $masterView->logout();
         } else {
             //If user is authenticated and logged in
             return new KustAdminController($masterView, $loginDAL);
         }
     }
 }
<?php

include_once '../bootstrap.php';
use Models\LoginManager;
use Views\LoginView;
LoginManager::startSession();
if ($_SERVER['REQUEST_METHOD'] === 'GET') {
    $loginView = new LoginView(false);
    $loginView->render();
} elseif ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $username = $_POST['username'];
    $password = $_POST['password'];
    $loginManager = new LoginManager();
    $isLoginSuccess = $loginManager->isValid($username, $password);
    if ($isLoginSuccess) {
        header("Location: /auction/homepage");
        exit;
    } else {
        $loginView = new LoginView(true);
        $loginView->render();
    }
}