<?php
/**
 *
 * Copyright (C) Villanova University 2007.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2,
 * as published by the Free Software Foundation.
 *
 * 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
 *
 */

require_once 'Smarty/Smarty.class.php';
require_once 'sys/mobile_device_detect.php';

// Smarty Extension class
class UInterface extends Smarty
{
    public $lang;
    private $vufindTheme;   // which theme(s) are active?

    function UInterface()
    {
        global $configArray;

        $local = $configArray['Site']['local'];
        $this->vufindTheme = $configArray['Site']['theme'];

        // Use mobile theme for mobile devices (if enabled in config.ini)
        if (isset($configArray['Site']['mobile_theme'])) {
            // If the user is overriding the UI setting, store that:
            if (isset($_GET['ui'])) {
                $_COOKIE['ui'] = $_GET['ui'];
                setcookie('ui', $_GET['ui'], null, '/');
            // If we don't already have a UI setting, detect if we're on a mobile
            // and store the result in a cookie so we don't waste time doing the
            // detection routine on every page:
            } else if (!isset($_COOKIE['ui'])) {
                $_COOKIE['ui'] = mobile_device_detect() ? 'mobile' : 'standard';
                setcookie('ui', $_COOKIE['ui'], null, '/');
            }
            // If we're mobile, override the standard theme with the mobile one:
            if ($_COOKIE['ui'] == 'mobile') {
                $this->vufindTheme = $configArray['Site']['mobile_theme'];
            }
        }

        // Check to see if multiple themes were requested; if so, build an array,
        // otherwise, store a single string.
        $themeArray = explode(',', $this->vufindTheme);
        if (count($themeArray) > 1) {
            $this->template_dir = array();
            foreach ($themeArray as $currentTheme) {
                $currentTheme = trim($currentTheme);
                $this->template_dir[] = "$local/interface/themes/$currentTheme";
            }
        } else {
            $this->template_dir  = "$local/interface/themes/{$this->vufindTheme}";
        }
        
        // Create an MD5 hash of the theme name -- this will ensure that it's a
        // writeable directory name (since some config.ini settings may include
        // problem characters like commas or whitespace).
        $md5 = md5($this->vufindTheme);
        $this->compile_dir   = "$local/interface/compile/$md5";
        if (!is_dir($this->compile_dir)) {
            mkdir($this->compile_dir);
        }
        $this->cache_dir     = "$local/interface/cache/$md5";
        if (!is_dir($this->cache_dir)) {
            mkdir($this->cache_dir);
        }
        $this->plugins_dir   = array('plugins', "$local/interface/plugins");
        $this->caching       = false;
        $this->debug         = true;
        $this->compile_check = true;
        
        unset($local);
        
        $this->register_function('translate', 'translate');
        $this->register_function('char', 'char');
        
        $this->assign('site', $configArray['Site']);
        $this->assign('path', $configArray['Site']['path']);
        $this->assign('url', $configArray['Site']['url']);
        $this->assign('fullPath', $_SERVER['REQUEST_URI']);
        $this->assign('supportEmail', $configArray['Site']['email']);
        $searchObject = SearchObjectFactory::initSearchObject();
        $this->assign('basicSearchTypes', is_object($searchObject) ? 
            $searchObject->getBasicTypes() : array());

        if (isset($configArray['OpenURL']) && 
            isset($configArray['OpenURL']['url'])) {
            // Trim off any parameters (for legacy compatibility -- default config
            // used to include extraneous parameters):
            list($base) = explode('?', $configArray['OpenURL']['url']);
        } else {
            $base = false;
        }
        $this->assign('openUrlBase', empty($base) ? false : $base);

        // Other OpenURL settings:
        $this->assign('openUrlWindow', 
            empty($configArray['OpenURL']['window_settings']) ?
            false : $configArray['OpenURL']['window_settings']);
        $this->assign('openUrlGraphic', empty($configArray['OpenURL']['graphic']) ?
            false : $configArray['OpenURL']['graphic']);
        $this->assign('openUrlGraphicWidth',
            empty($configArray['OpenURL']['graphic_width']) ?
            false : $configArray['OpenURL']['graphic_width']);
        $this->assign('openUrlGraphicHeight',
            empty($configArray['OpenURL']['graphic_height']) ?
            false : $configArray['OpenURL']['graphic_height']);
        
        $this->assign('currentTab', 'Search');
        
        $this->assign('authMethod', $configArray['Authentication']['method']);

        if ($configArray['Authentication']['method'] == 'Shibboleth') {
           if(!isset($configArray['Shibboleth']['login']) || !isset($configArray['Shibboleth']['target'])){
                   throw new Exception('Missing parameter in the config.ini. Check if ' .
                                       'the parameters login and target are set.' );
    }
    
           $sessionInitiator = $configArray['Shibboleth']['login'] . '?target=' . $configArray['Shibboleth']['target'];

           if(isset($configArray['Shibboleth']['provider_id'])) {
                $sessionInitiator = $sessionInitiator . '&providerId=' . $configArray['Shibboleth']['provider_id'];
           }

           $this->assign('sessionInitiator', $sessionInitiator);

        }

    }

    /**
     * Get the current active theme setting.
     *
     * @access  public
     * @return  string
     */
    public function getVuFindTheme()
    {
        return $this->vufindTheme;
    }

    function setTemplate($tpl)
    {
        $this->assign('pageTemplate', $tpl);
    }

    function setPageTitle($title)
    {
        $this->assign('pageTitle', translate($title));
    }

    function getLanguage()
    {
        return $this->lang;
    }
    
    function setLanguage($lang)
    {
        global $configArray;
        
        $this->lang = $lang;
        $this->assign('userLang', $lang);
        $this->assign('allLangs', $configArray['Languages']);
    }
}

function translate($params)
{
    global $translator;
    
    // If no translator exists yet, create one -- this may be necessary if we
    // encounter a failure before we are able to load the global translator
    // object.
    if (!is_object($translator)) {
        global $configArray;
        
        $translator = new I18N_Translator('lang', $configArray['Site']['language'], 
            $configArray['System']['debug']);
    }
    if (is_array($params)) {
        return $translator->translate($params['text']);
    } else {
        return $translator->translate($params);
    }
}

function char($params)
{
    extract($params);
    return chr($int);
}

?>