<?php
/**
 * score.php - Stud.IP Highscore List
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * @author      Stefan Suchi <suchi@gmx.de>
 * @author      Michael Riehemann <michael.riehemann@uni-oldenburg.de>
 * @author      Jan-Hendrik Willms <tleilax+studip@gmail.com>
 * @license     http://www.gnu.org/licenses/gpl-2.0.html GPL version 2 or later
 * @category    Stud.IP
 * @since       2.4
 */

class ScoreController extends AuthenticatedController
{
    /**
     * Set up this controller.
     *
     * @param String $action Name of the action to be invoked
     * @param Array  $args   Arguments to be passed to the action method
     */
    public function before_filter(&$action, &$args)
    {
        // Interpret every action other than 'index', 'publish' or 'unpublish'
        // as page number
        if (!in_array($action, words('index publish unpublish'))) {
            array_unshift($args, (int)$action);
            $action = 'index';
        }

        parent::before_filter($action, $args);

        if (!Config::Get()->SCORE_ENABLE) {
            throw new AccessDeniedException(_('Die Rangliste und die Score-Funktion sind nicht aktiviert.'));
        }

        PageLayout::setHelpKeyword('Basis.VerschiedenesScore'); // external help keyword
        PageLayout::setTitle(_('Rangliste'));
        Navigation::activateItem('/community/score');

    }

    /**
     * Displays the global ranking list.
     *
     * @param int $page Page of the ranking list to be displayed.
     */
    public function index_action($page = 1)
    {
        $vis_query = get_vis_query('b');

        // Calculate offsets
        $max_per_page = Config::get()->ENTRIES_PER_PAGE;

        if ($page < 1) {
            $page = 1;
        }

        $offset = max(0, ($page - 1) * $max_per_page);

        // Liste aller die mutig (oder eitel?) genug sind
        $query = "SELECT SQL_CALC_FOUND_ROWS a.user_id,username,score,geschlecht, {$GLOBALS['_fullname_sql']['full']} AS fullname
                  FROM user_info AS a
                  LEFT JOIN auth_user_md5 AS b USING (user_id)
                  WHERE score > 0 AND locked = 0 AND {$vis_query}
                  ORDER BY score DESC
                  LIMIT " . (int)$offset . "," . (int)$max_per_page;
        $result = DBManager::get()->fetchAll($query);
        $count = DBManager::get()->fetchColumn("SELECT FOUND_ROWS()");

        $persons = [];
        foreach ($result as $row) {
            $row['is_king'] = StudipKing::is_king($row['user_id'], true);
            $persons[$row['user_id']] = $row;
        }
        $persons = Score::getScoreContent($persons);
        $this->persons         = array_values($persons);
        $this->numberOfPersons = $count;
        $this->page            = $page;
        $this->offset          = $offset;
        $this->max_per_page    = $max_per_page;
        $this->current_user    = User::findCurrent();
        $this->current_user_score = Score::getMyScore($this->current_user);

        // Set up sidebar and helpbar

        $sidebar = Sidebar::get();

        $actions = new OptionsWidget();
        $actions->addCheckbox(
        _('Ihren Wert veröffentlichen'),
            $this->current_user->score,
            $this->url_for('score/publish'),
            $this->url_for('score/unpublish')
        );
        $sidebar->addWidget($actions);
    }

    /**
     * Publish user's score / add user's score to the ranking list.
     */
    public function publish_action()
    {
        $user = User::findCurrent();
        $user->score = Score::getMyScore($user);
        $user->store();
        PageLayout::postSuccess(_('Ihr Wert wurde auf der Rangliste veröffentlicht.'));
        $this->redirect('score');
    }

    /**
     * Removes the user's score from the ranking list.
     */
    public function unpublish_action()
    {
        $user = User::findCurrent();
        $user->score = 0;
        $user->store();
        PageLayout::postSuccess(_('Ihr Wert wurde von der Rangliste gelöscht.'));
        $this->redirect('score');
    }
}