<?php
    $l_header_slogan = array('ro' => '"The price of inaction is far greater than the cost of making a mistake." Meister Eckhart',
                             'en' => '"The price of inaction is far greater than the cost of making a mistake." Meister Eckhart');
                             
    $l_footer_sitemap = array('ro' => 'Harta paginii',
                              'en' => 'Sitemap');
    
    $l_sidebarleft_research = array('ro' => 'Cercetare',
                                 'en' => 'Research');
                                 
    $l_sidebarleft_links = array('ro' => 'Linkuri',
                                 'en' => 'Links');
                                 
    $l_sidebarright_languages = array('ro' => 'Limbi',
                                      'en' => 'Languages');
                                      
    $l_sidebarright_partners = array('ro' => 'Parteneri',
                                     'en' => 'Partners');
                                     
    $l_abstract_title = array('ro' => 'Rezumat',
                              'en' => 'Abstract');
                              
    $l_objectives_title = array('ro' => 'Obiective',
                                'en' => 'Objectives');

    $l_partners_title = array('ro' => 'Partenerii nostri',
                                'en' => 'Partners');

    $l_annualreports_title = array('ro' => 'Rapoarte anuale',
                                   'en' => 'Annual reports');

    $l_contact_title = array('ro' => 'Contact',
                                'en' => 'Contact');
                                
    $l_news_title = array('ro' => 'Noutati si evenimente',
                          'en' => 'News and events');

class Localization
{
    public static function DetectLanguage()
    {
        global $language;
        global $LANGUAGES;

        //$url = Misc::CurrentURL();
        //$url = Misc::ReverseStringSearch($url, '?');


        // Handle language
        // Get URL parameters
        $query = explode("&", $_SERVER['QUERY_STRING']);
        
        if (count($query) > 0)
        {
            // Try to get the language from the query
            foreach($query as $q)
            {
                if (strlen($q) > 0)
                {
                    list($key, $value) = explode("=", $q);

                    if(strtolower($key) == strtolower(LANGUAGEPARAM))
                    {
                        $language = strtolower($value);

                        if (!in_array($language, $LANGUAGES))
                        {
                            Log::Add('Language change', 'Invalid language "'.$value.'"');
                            $language = DEFAULT_LANG;
                        }

                        // Change language
                        CookieHandler::SetLanguage(strtolower($language));
                
                        return;
                    }
                }
            }
        }        

        // Otherwise load from the cookies
        if (CookieHandler::IsLanguageSet())
        {
            $cookieLanguage = CookieHandler::GetLanguage();
            
            if (in_array($cookieLanguage, $LANGUAGES))
            {
                $language = $cookieLanguage;
                return;
            }
            else
            {
                Log::Add('Language change', 'Invalid language from cookie "'.$value.'"');
            }
        }
        
        $language = DEFAULT_LANG;
    }

    public static function ApplyLanguage()
    {
        if (!SessionHandler::IsSetLanguage())
        {
            if (!CookieHandler::IsSetLanguage())
            {
                $lang = DEFAULT_LANG;
                SessionHandler::SetLanguage(strtolower($lang));
                CookieHandler::SetLanguage(strtolower($lang));
            }
            else
            {
                $lang = CookieHandler::GetLanguage();

                global $LANGUAGES;
                if (!in_array($lang, $LANGUAGES))
                {
                    Log::Add('Language change', 'Invalid language set in cookie: "'.$value.'"');
                    $lang = DEFAULT_LANG;
                }

                SessionHandler::SetLanguage(strtolower($lang));
                CookieHandler::SetLanguage(strtolower($lang));
            }
        }
    }
    
    // Displays text in the current language.
    // If there is no tranlation it falls back to the default language
    public static function Localize($phrase)
    {
        if($phrase == null)
        {
            return '';
        }
        
        global $language;
        
        if (array_key_exists($language, $phrase))
        {
            echo($phrase[$language]);
        }
        else
        {
            echo($phrase[DEFAULT_LANG]);
        }
    }
    
    // Displays text in the current language.
    // If there is no tranlation it falls back to the default language
    public static function GetLocalizedValue($phrase)
    {
        if($phrase == null)
        {
            return '';
        }
        
        global $language;

        if (array_key_exists($language, $phrase))
        {
            return $phrase[$language];
        }
        else
        {
            return $phrase[DEFAULT_LANG];
        }
    }
    
    public static function LocalizePage($rootName, $generateTitle = true)
    {
        if ($generateTitle)
        {
            global $pageTitle;
            echo("<h2>$pageTitle</h2>");
        }

        global $language;
        
        $localizedFile = 'translations/'.$rootName.'.'.$language;
        
        if (file_exists($localizedFile))
        {
            include($localizedFile);
        }
        else
        {
            $fallback1 = 'translations/'.$rootName.'.'.DEFAULT_LANG;
            
            if (file_exists($fallback1))
            {
                include($fallback1);
            }
            else
            {
                $fallback2 = 'translations/'.$rootName;

                if (file_exists($fallback2))
                {
                    include($fallback2);
                }
            }
        }
    }
}
?>