Laravel: authenticate users without Database

<?php

namespace App\Http\Controllers\Auth;

use App\Http\Controllers\Controller;
use App\Providers\RouteServiceProvider;
use Illuminate\Foundation\Auth\AuthenticatesUsers;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Log;

class LoginController extends Controller
{
    /*
    |--------------------------------------------------------------------------
    | Login Controller
    |--------------------------------------------------------------------------
    |
    | This controller handles authenticating users for the application and
    | redirecting them to your home screen. The controller uses a trait
    | to conveniently provide its functionality to your applications.
    |
     */

    use AuthenticatesUsers;

    /**
     * Where to redirect users after login.
     *
     * @var string
     */
    protected $redirectTo = RouteServiceProvider::HOME;

    /**
     * Create a new controller instance.
     *
     * @return void
     */
    public function __construct()
    {
        $this->middleware('guest')->except('logout');
    }

    /* custom */

    // \vendor\laravel\framework\src\Illuminate\Foundation\Auth\AuthenticatesUsers.php

    /**
     * Handle a login request to the application.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\RedirectResponse|\Illuminate\Http\Response|\Illuminate\Http\JsonResponse
     *
     * @throws \Illuminate\Validation\ValidationException
     */
    public function login(Request $request)
    {

        Log::debug('login ' . $request->input('username') . ' == ' . env('LOGIN_USERNAME') . ' && ' . $request->input('password') . ' == ' . env('LOGIN_PASSWORD'));

        if ($request->input('password') === env('LOGIN_PASSWORD') && $request->input('username') === env('LOGIN_USERNAME')) {
            $request->session()->put('authenticated', time());
            return redirect()->intended('home');
        }

        return view('auth.login', [
            'message' => 'Provided PIN is invalid. ',
        ]);
    }

}

LOGIN_PASSWORD=phunsanit
LOGIN_USERNAME=pitt

<?php

namespace App\Http\Middleware;

use Closure;

class AuthenticateWithSession
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next)
    {
        if (!empty(session('authenticated'))) {
            $request->session()->put('authenticated', time());
            return $next($request);
        }

        return redirect('/login');
    }
}

<?php

/*
|--------------------------------------------------------------------------
| Web Routes
|--------------------------------------------------------------------------
|
| Here is where you can register web routes for your application. These
| routes are loaded by the RouteServiceProvider within a group which
| contains the "web" middleware group. Now create something great!
|
 */
/*
Route::get('/', function () {
return view('welcome');
});

Route::get('/home', 'HomeController@index')->name('home');
 */

Auth::routes();
Route::group(['middleware' => ['web', 'AuthenticateWithSession']], function () {
...
    Route::get('/home', 'HomeController@index')->name('home');
...
});

    protected $routeMiddleware = [
...

        /* custom */
        'AuthenticateWithSession' => \App\Http\Middleware\AuthenticateWithSession::class,
...
    ];