/*
 * 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');
		console.info('Loading language ' + lang_id + ' via AJAX synchronous request');
		var ajax = ajaxMakeXHR();
		var uri = makeUrlNS('Special', 'LangExportJSON/' + lang_id, enano_version);
		ajax.open('GET', uri, false);
		ajax.send(null);
		if ( ajax.readyState == 4 && ajax.status == 200 )
		{
			eval_global(ajax.responseText);
		}
		load_hide_win();
	}
	
	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 language_onload = function()
{
	$lang = new Language(ENANO_LANG_ID);
}

var $lang = {
	get: function(t, s) {
		language_onload();
		return $lang.get(t, s);
	},
	placeholder: true
};