<?php

// (c) Copyright by authors of the Tiki Wiki CMS Groupware Project
//
// All Rights Reserved. See copyright.txt for details and a complete list of authors.
// Licensed under the GNU LESSER GENERAL PUBLIC LICENSE. See license.txt for details.
// $Id$

/**
 * @return array
 */
function module_switch_lang_admin_info()
{
    return [
        'name' => tra('Switch Admin Language'),
        'description' => tra('Displays a language picker to change the language of admin site.'),
        'params' => [
            'mode' => [
                'name' => tra('Display mode'),
                'description' => tra('Changes how the list of languages is displayed. Possible values are droplist, flags and words. Defaults to droplist.'),
                'filter' => 'alpha',
            ],
        ],
    ];
}

/**
 * @param $mod_reference
 * @param $module_params
 */
function module_switch_lang_admin($mod_reference, $module_params)
{
    global $prefs, $user;

    if (empty($user)) {
        return false;
    }

    $userlib = TikiLib::lib('user');
    if (! $userlib->user_has_permission($user, 'tiki_p_admin')) {
        return false;
    }

    $frontendLang = $prefs['language'];
    $userlib = TikiLib::lib('user');
    $languageAdmin = ! empty($prefs['language_admin']) ? $prefs['language_admin'] : $frontendLang;
    $userLang = $userlib->get_user_preference($user, 'language');
    $userAdminLang = $userlib->get_user_preference($user, 'language_admin');

    if (! empty($userAdminLang)) {
        $frontendLang = $userAdminLang;
    } elseif (! empty($languageAdmin)) {
        $frontendLang = $languageAdmin;
    } elseif (! empty($userLang)) {
        $frontendLang = $userLang;
    } else {
        $frontendLang = $prefs['site_language'];
    }

    $smarty = TikiLib::lib('smarty');
    $tikilib = TikiLib::lib('tiki');

    $languages = [];
    $langLib = TikiLib::lib('language');
    $languages = $langLib->list_languages(false, 'y');
    $mode = isset($module_params["mode"]) ? $module_params["mode"] : "droplist";
    $smarty->assign('mode', $mode);
    if ($mode == 'flags' || $mode == 'words' || $mode == 'abrv') {
        include('lang/flagmapping.php');
        global $pageRenderer;

        for ($i = 0, $icount_languages = count($languages); $i < $icount_languages; $i++) {
            if (isset($flagmapping[$languages[$i]['value']])) {
                $languages[$i]['flag'] = $flagmapping[$languages[$i]['value']][0];
            } else {
                $languages[$i]['flag'] = '';
            }
            if (isset($pageRenderer) && count($pageRenderer->trads) > 0) {
                $languages[$i]['class'] = ' unavailable';
                for ($t = 0, $tcount_pageR = count($pageRenderer->trads); $t < $tcount_pageR; $t++) {
                    if ($pageRenderer->trads[$t]['lang'] == $languages[$i]['value']) {
                        $languages[$i]['class'] = ' available';
                    }
                }
            } else {
                $languages[$i]['class'] = '';
            }
            if (isset($languageAdmin) && $languages[$i]['value'] == $languageAdmin) {
                $languages[$i]['class'] .= ' highlight';
            }
        }
    }
    $smarty->assign_by_ref('languages', $languages);
    $smarty->assign_by_ref('frontendLang', $frontendLang);
}