proxitok/routes/settings.php

<?php

/**@var Bramus\Router\Router $router */

use Helpers\Following;
use Helpers\Settings;
use Helpers\Misc;
use Views\Models\SettingsTemplate;

$router->mount('/settings', function () use ($router) {
    $router->get('/', function () {
        $latte = Misc::latte();
        $latte->render(Misc::getView('settings'), new SettingsTemplate());
    });

    $router->post('/proxy', function () {
        if (in_array(Settings::PROXY, $_POST)) {
            foreach (Settings::PROXY as $proxy_element) {
                Settings::set($proxy_element, $_POST[$proxy_element]);
            }
        }
        http_response_code(302);
        header('Location: ./home');
    });

    $router->post('/following', function () {
        $following = Following::getUsers();
        if (!isset($_POST['mode']) || empty($_POST['mode'])) {
            die('You need to send a mode');
        }

        switch ($_POST['mode']) {
            case 'add':
                // Add following
                array_push($following, $_POST['account']);
                break;
            case 'remove':
                // Remove following
                $index = array_search($_POST['account'], $following);
                if ($index !== false) {
                    unset($following[$index]);
                }
                break;
            default:
                // Invalid
                die('Invalid mode');
        }

        // Build string
        $following_string = implode(',', $following);
        Settings::set('following', $following_string);
        header('Location: ../settings');
    });
});