Access auth() methods outside of Laravel

I need to get the user_id of the users of a remote app in another app in jQuery:

// another app in jQuery
$.get('http://example.com/userid') // get the user id of the user registered on the app, example.com
  .done(function(response) {
    console.log(response); // get user id
  });

@martinbean Thanks for trying to help. For me, It doens't matter that anyone else could get the user id, I just want to get it, as I can.

@ilex01 Then what’s the problem? Just return the authenticate user’s ID from that super insecure endpoint you’re calling via jQuery like it’s 2013?

class SomeController extends Controller
{
    public function __construct()
    {
        $this->middleware('auth');
    }

    public function userid(Request $request)
    {
        return response($request->user()->getKey());
    }
}

@martinbean Even if i'm logged in, I get the login.blade.php as a result in my jQuery app.

@ilex01 you run this http route

$.get('http://example.com/userid')

How in earth does the server know WHICH user you are talking about?

@Snapey That's my problem (the current user)

@ilex01 But why are you trying to randomly get a user ID via AJAX in the first place?

@martinbean To remotely get data associated with the user_id.

@ilex01 Why not just build an API endpoint that returns the data you actually want? 🤷‍♂️

I'm guessing, @martinbean because there isn't a copy and paste solution for that?

@martinbean Because I've never learned to do an API.

@ilex01 just a suggestion, but take the time to learn.

Before using any Laravel-specific functionality, you need to bootstrap the Laravel application. This involves initializing the Laravel framework and its components.

$app = require_once '/path/to/your/laravel/app/bootstrap/app.php';
$kernel = $app->make(Illuminate\Contracts\Http\Kernel::class);
$response = $kernel->handle(
    $request = Illuminate\Http\Request::capture()
);