<?php

/*

  Belokan Micro Framework

  Licensed under GNU GPL

  http://gitorious.org/belokan

  ---

  Belokan/Local.php:

  Localization system

*/

class Belokan_Local {

  static private

    $_instance,

    $_langs,

    $_data,

    $_logBelokan;

  public static function getInstance ()

  {

    if (self::$_instance === null)

      self::$_instance = new self;

    return self::$_instance;

  }

  public function __construct ()

  {

    $this->_langs = array();

    $this->_data = array();

    $this->_logBelokan = Belokan_Config::getInstance()->get('log', 'belokan');

  }

  public function loadLanguage ($lang, $source, $sourceType='file')

  {

    $log = Belokan_Log::getInstance();

    if (strtolower($sourceType) == 'file') {

      if (file_exists($source)) {

        $this->_data[$lang] = include $source;

        return true;

      } else {

        $source = Belokan_Config::getInstance()->get('dir', 'langs').$source;

        if (file_exists($source)) {

          $this->_data[$lang] = include $source;

          return true;

        } else {

          if ($this->_logBelokan)

            $log->add('Belokan', 'Source file for language '.$lang.' not found ('.$source.').');

          return false;

        }

      }

    } else if (strtolower($sourceType) == 'sqlite') {

      $base = new Belokan_Db_SQLite($source);

      $base->query('SELECT * FROM `lang_'.$lang.'`;')->execute();

      $rows = $base->getRawResults();

      if (sqlite_num_rows($rows)) {

        while ($row = sqlite_fetch_array($rows))

          $this->_data[$lang][$row['key']] = $row['value'];

        return true;

      } else {

        if ($this->_logBelokan)

          $log->add('Belokan', 'Retrieve an empty rowset for language '.$lang.' from the SQLite database.');

        return false;

      }

    } else if (strtolower($sourceType) == 'mysql') {

      $base = new Belokan_Db_MySQL($source);

      $base->query('SELECT * FROM `lang_'.$lang.'`;')->execute();

      $rows = $base->getRawResults();

      if (mysql_num_rows($rows) > 0) {

        while ($row = mysql_fetch_array($rows))

          $this->_data[$lang][$row['key']] = $row['value'];

        return true;

      } else {

        if ($this->_logBelokan)

          $log->add('Belokan', 'Retrieve an empty rowset for language '.$lang.' from the MySQL database.');

        return false;

      }

    }

  }

  public function isLoaded ($lang)

  {

    return isset($this->_data[$lang]);

  }

  public function get ($lang, $id)

  {

    if (!isset($this->_data[$lang][$id]))

      return null;

    return $this->_data[$lang][$id];

  }

}