/*

 * Enano client-side localization library

 */

var Language = function(lang_id)

{

  var have_lang = false;

  if ( typeof(enano_lang) == 'object' )

  {

    if ( typeof(enano_lang[lang_id]) == 'object' )

    {

      have_lang = true;

    }

  }

  if ( !have_lang )

  {

    // load the language file

    load_show_win('strings');

    var ajax = ajaxMakeXHR();

    var uri = makeUrlNS('Special', 'LangExportJSON/' + lang_id);

    ajax.open('GET', uri, false);

    ajax.send(null);

    if ( ajax.readyState == 4 && ajax.status == 200 )

    {

      eval_global(ajax.responseText);

    }

  }

  if ( typeof(enano_lang) != 'object' )

    return false;

  if ( typeof(enano_lang[lang_id]) != 'object' )

    return false;

  this.strings = enano_lang[lang_id];

  this.lang_id = lang_id;

  this.placeholder = false;

  this.get = function(string_id, subst)

  {

    var catname = string_id.substr(0, string_id.indexOf('_'));

    var string_name = string_id.substr(string_id.indexOf('_') + 1);

    if ( typeof(this.strings[catname]) != 'object' )

      return string_id;

    if ( typeof(this.strings[catname][string_name]) != 'string' )

      return string_id;

    return this.perform_subst(this.strings[catname][string_name], subst);

  }

  this.perform_subst = function(str, subst)

  {

    var this_regex = /%this\.([a-z0-9_]+)%/;

    var match;

    while ( str.match(this_regex) )

    {

      match = str.match(this_regex);

      str = str.replace(match[0], this.get(match[1]));

    }

    // hackish workaround for %config.*%

    str = str.replace(/%config\.([a-z0-9_]+)%/g, '%$1%');

    if ( typeof(subst) == 'object' )

    {

      for ( var i in subst )

      {

        if ( !i.match(/^([a-z0-9_]+)$/) )

          continue;

        var regex = new RegExp('%' + i + '%', 'g');

        str = str.replace(regex, subst[i]);

      }

    }

    return str;

  }

}

var $lang = {

  get: function(t) { return t; },

  placeholder: true

};

var language_onload = function()

{

  $lang = new Language(ENANO_LANG_ID);

}

addOnloadHook(language_onload);