/// <reference path="../includeReference.js" />

var _T_Categories = function()
{
	this.arrCatsByOrder=[];
	this.init=function()
	{
		this.removeEmptyCategories();

		var table = this.getTable();

		//create array of categories by dispaly order
		for (var category in table)
		{
			this.arrCatsByOrder.push(category);                
		}        

		this.arrCatsByOrder.sort(function(l,r) {
			if (T_Categories.getMenuDisplayOrder(l)>T_Categories.getMenuDisplayOrder(r))
				return 1;
			else 
				return -1;				
		});



	};

	this.removeEmptyCategories=function()
	{
		var catTable = this.getTable();		

		var categoriesToKeep={};
		for (var row in this.getTable())
		{
			categoriesToKeep[row]=false;
		}

		var dishTable=T_Dishes.getTable();
		for (var row in dishTable)
		{
			var usedCatID = dishTable[row]["CategoryID"];
			while (usedCatID!=null & usedCatID !=undefined && usedCatID !="0")
			{
				categoriesToKeep[usedCatID]=true;
				if (catTable[usedCatID])
					usedCatID=catTable[usedCatID]["ParentID"];
				else 
				 break;				 
			}
		}

		for (var index in categoriesToKeep)
		{
			if (categoriesToKeep[index]==false)
				delete catTable[index];
		}				



	};
	this.getTable = function()
	{
		return MenuDB.getTable("T_Categories");
	};

	this.getMenuDisplayOrder=function(sID)
	{
		return parseInt(this.getTable()[sID]["MenuDisplayOrder"]);
	};

	this.getCategoriesByParent = function(sParentID)
	{
		var table = this.getTable();
		var ret = [];
		for (var index in this.arrCatsByOrder)
		{
			var category = this.arrCatsByOrder[index];
			if (table[category]["ParentID"] == sParentID)
				ret.push(category);
		}
		return ret;
	};

	this.isParent = function(sID)
	{
		var table = this.getTable();        
		for (var index in this.arrCatsByOrder)
		{
			if (table[this.arrCatsByOrder[index]]["ParentID"] == sID)
				return true;
		}
		return false;
	};


	this.getMainCategories = function()
	{
		return this.getCategoriesByParent("0");
	};

	this.getCategoryName=function(sCategoryKey)
	{
		currentLang=T_MenuLanguages.getCurrentLanguageId();
		if (currentLang=="1")
			currentLang="";
		var sRet=this.getTable()[sCategoryKey]["Name"+currentLang];
		if (sRet==undefined)
			sRet=this.getTable()[sCategoryKey]["Name"];
		return sRet;
	};

};
var T_Categories = new _T_Categories();
T_Categories.init();