Part-DB-server/src/EventSubscriber/LoginSuccessListener.php

<?php
/**
 * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony)
 *
 * Copyright (C) 2019 Jan Böhmer (https://github.com/jbtronics)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 *
 */

namespace App\EventSubscriber;


use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpFoundation\Session\Flash\FlashBagInterface;
use Symfony\Component\Security\Http\Event\InteractiveLoginEvent;
use Symfony\Component\Security\Http\SecurityEvents;
use Symfony\Contracts\Translation\TranslatorInterface;

/**
 * This event listener shows an login successful flash to the user after login.
 * @package App\EventSubscriber
 */
class LoginSuccessListener implements EventSubscriberInterface
{

    protected $translator;
    protected $flashBag;

    public function __construct(TranslatorInterface $translator, FlashBagInterface $flashBag)
    {
        $this->translator = $translator;
        $this->flashBag = $flashBag;
    }

    public function onLogin(InteractiveLoginEvent $event)
    {
        $this->flashBag->add('notice', $this->translator->trans('flash.login_successful'));
    }

    /**
     * Returns an array of event names this subscriber wants to listen to.
     *
     * The array keys are event names and the value can be:
     *
     *  * The method name to call (priority defaults to 0)
     *  * An array composed of the method name to call and the priority
     *  * An array of arrays composed of the method names to call and respective
     *    priorities, or 0 if unset
     *
     * For instance:
     *
     *  * ['eventName' => 'methodName']
     *  * ['eventName' => ['methodName', $priority]]
     *  * ['eventName' => [['methodName1', $priority], ['methodName2']]]
     *
     * @return array The event names to listen to
     */
    public static function getSubscribedEvents()
    {
        return [SecurityEvents::INTERACTIVE_LOGIN => 'onLogin'];
    }
}