<?php
/**
 * Trean Base Class.
 *
 * Copyright 2002-2017 Horde LLC (http://www.horde.org/)
 *
 * See the enclosed file LICENSE for license information (BSD). If you did not
 * did not receive this file, see http://www.horde.org/licenses/bsdl.php.
 *
 * @author  Mike Cochrane <mike@graftonhall.co.nz>
 * @package Trean
 */
class Trean
{
    /**
     * Returns the specified permission for the current user.
     *
     * @param string $permission  A permission, currently only 'max_folders'
     *                            and 'max_bookmarks'.
     *
     * @return mixed  The value of the specified permission.
     */
    static function hasPermission($permission)
    {
        $perms = $GLOBALS['injector']->getInstance('Horde_Perms');
        if (!$perms->exists('trean:' . $permission)) {
            return true;
        }

        $allowed = $perms->getPermissions(
            'trean:' . $permission, $GLOBALS['registry']->getAuth());
        if (is_array($allowed)) {
            switch ($permission) {
            case 'max_folders':
            case 'max_bookmarks':
                $allowed = max($allowed);
                break;
            }
        }

        return $allowed;
    }

    /**
     * Returns an apropriate icon for the given bookmark.
     *
     * @param Trean_Bookmark $bookmark  The bookmark object.
     *
     * @return  Horde_Url The URL for the image.
     */
    static function getFavicon($bookmark)
    {
        if ($bookmark->favicon_url) {
            return Horde::url('favicon.php')->add('bookmark_id', $bookmark->id);
        } else {
            // Default to the protocol icon.
            $protocol = substr($bookmark->url, 0, strpos($bookmark->url, '://'));
            return Horde_Themes::img('protocol/' . (empty($protocol) ? 'http' : $protocol) . '.png');
        }
    }

    static public function addFeedLink()
    {
        $rss = Horde::url('rss.php', true, -1);
        if ($label = Horde_Util::getFormData('label')) {
            $rss->add('label', $label);
        }

        $GLOBALS['page_output']->addLinkTag(array(
            'href' => $rss,
            'title' => _("Bookmarks Feed")
        ));
    }

    static public function bookmarkletLink()
    {
        $view = $GLOBALS['injector']->createInstance('Horde_View');
        $view->url = Horde::url('add.php', true, array('append_session' => -1))
            ->add('popup', 1);
        $view->image = Horde::img('add.png');
        return $view->render('bookmarklet');
    }

}