Pony.fm/app/Http/Controllers/UsersController.php

<?php

/**
 * Pony.fm - A community for pony fan music.
 * Copyright (C) 2015 Peter Deltchev
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

namespace Poniverse\Ponyfm\Http\Controllers;

use Poniverse\Ponyfm\User;
use File;
use Illuminate\Support\Facades\App;

class UsersController extends Controller
{
    public function getAvatar($id, $type)
    {
        $coverType = Cover::getCoverFromName($type);

        if ($coverType == null) {
            App::abort(404);
        }

        $user = User::find($id);
        if (!$user) {
            App::abort(404);
        }

        return File::inline($user->getAvatarFile($coverType['id']), 'image/png', 'cover.png');
    }
}