<?php

/**
 * webtrees: online genealogy
 * Copyright (C) 2019 webtrees development team
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */
declare(strict_types=1);

namespace Fisharebest\Webtrees\Http\RequestHandlers;

use Fisharebest\Webtrees\Auth;
use Fisharebest\Webtrees\FlashMessages;
use Fisharebest\Webtrees\I18N;
use Fisharebest\Webtrees\Log;
use Fisharebest\Webtrees\Tree;
use Fisharebest\Webtrees\User;
use InvalidArgumentException;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Server\RequestHandlerInterface;

use function assert;
use function redirect;
use function route;

/**
 * Perform a logout.
 */
class Logout implements RequestHandlerInterface
{
    /**
     * @param ServerRequestInterface $request
     *
     * @return ResponseInterface
     */
    public function handle(ServerRequestInterface $request): ResponseInterface
    {
        $tree = $request->getAttribute('tree');
        assert($tree instanceof Tree, new InvalidArgumentException());

        $user = $request->getAttribute('user');

        if ($user instanceof User) {
            Log::addAuthenticationLog('Logout: ' . Auth::user()->userName() . '/' . Auth::user()->realName());
            Auth::logout();
            FlashMessages::addMessage(I18N::translate('You have signed out.'));
        }

        if ($tree instanceof Tree) {
            return redirect(route('tree-page', ['tree' => $tree->name()]));
        }

        return redirect(route('tree-page'));
    }
}