Ticket #597: API.php

<?php
/**
 * @package Piwik_LanguagesManager
 */
class Piwik_LanguagesManager_API 
{
    static private $instance = null;
    static public function getInstance()
    {
        if (self::$instance == null)
        {            
            $c = __CLASS__;
            self::$instance = new $c();
        }
        return self::$instance;
    }
    static protected $availableLanguageNames = null;
    static protected $languageNames = null;
    
    static public function isLanguageAvailable($languageCode)
    {
        return $languageCode !== false
            && in_array($languageCode, self::getAvailableLanguages());
    }
    
    static public function getAvailableLanguages()
    {
        if(!is_null(self::$languageNames))
        {
            return self::$languageNames;
        }
        $path = PIWIK_INCLUDE_PATH . "/lang/";
        $languages = glob($path . "*.php");
        $pathLength = strlen($path);
        $languageNames = array();
        foreach($languages as $language) 
        {
            $languageNames[] = substr($language, $pathLength, -strlen('.php'));
        }
        self::$languageNames = $languageNames;
        return $languageNames;
    }

    static public function getAvailableLanguagesInfo()
    {
        require "lang/en.php";
        $englishTranslation = $translations;
        $filenames = self::getAvailableLanguages();
        $languagesInfo = array();
        foreach($filenames as $filename) 
        {
            require "lang/$filename.php";
            $translationStringsDone = array_intersect_key($englishTranslation, $translations);
            $percentageComplete = count($translationStringsDone) / count($englishTranslation);
            $percentageComplete = round(100 * $percentageComplete, 0);  
            $languageInfo = array(     'code' => $filename, 
                                        'name' => $translations['General_OriginalLanguageName'],
                                        'english_name' => $translations['General_EnglishLanguageName'],
                                        'translators' => $translations['General_TranslatorName'],
                                        'translators_email' => $translations['General_TranslatorEmail'],
                                        'percentage_complete' => $percentageComplete . '%',
                            );
            $languagesInfo[] = $languageInfo;
        }
        return $languagesInfo;
    }
    
    static public function getAvailableLanguageNames()
    {
        if(!is_null(self::$availableLanguageNames))
        {
            return self::$availableLanguageNames;
        }
        
        $filenames = self::getAvailableLanguages();
        $languagesInfo = array();
        foreach($filenames as $filename) 
        {
            require "lang/$filename.php";
            $languagesInfo[] = array( 'code' => $filename, 'name' => $translations['General_OriginalLanguageName']);
        }
        self::$availableLanguageNames = $languagesInfo;
        return self::$availableLanguageNames;
    }
    
    static public function getTranslationsForLanguages($languageCode)
    {
        if(!self::isLanguageAvailable($languageCode))
        {
            return false;
        }else
        {
            require "lang/$languageCode.php";
            $languageInfo = array();
            foreach($translations as $key => $value)
            {
                $languageInfo[] = array('label' => $key, 'value' => $value);
            }
            return $languageInfo;
        }
    }
    
    
    /**
     * @param string $login
     * @param string|false $layout
     */
    static public function getLanguageForUser( $login )
    {
        Piwik::checkUserIsSuperUserOrTheUser($login);
        return Piwik_FetchOne('SELECT language FROM '.Piwik::prefixTable('user_language') .
                    ' WHERE login = ? ', array($login ));
    }
    
    static public function setLanguageForUser($login, $language)
    {
        Piwik::checkUserIsSuperUserOrTheUser($login);
        $paramsBind = array($login, $language, $language);
        Piwik_Query('INSERT INTO '.Piwik::prefixTable('user_language') .
                    ' (login, language)
                        VALUES (?,?)
                    ON DUPLICATE KEY UPDATE language=?',
                    $paramsBind);
    }
}