// JavaScript Document

var stockItems = {
	
'sku48-096-04-BRN-PT': {
'sku': '48-096-04-BRN-PT',
'type': 'occ',
'color': 'OCC',
'size': '4x8',
'weight': '52',
'price': '178.88'},
'sku48-120-04-BRN-PT': {
'sku': '48-120-04-BRN-PT',
'type': 'occ',
'color': 'OCC',
'size': '4x10',
'weight': '65',
'price': '223.6'},
'sku48-144-04-BRN-PT': {
'sku': '48-144-04-BRN-PT',
'type': 'occ',
'color': 'OCC',
'size': '4x12',
'weight': '78',
'price': '268.32'},
'sku48-096-04-SLP3000': {
'sku': '48-096-04-SLP3000',
'type': 'pro',
'color': 'Asphalt',
'size': '4x8',
'weight': '52',
'price': '195.52'},
'sku48-120-04-SLP3000': {
'sku': '48-120-04-SLP3000',
'type': 'pro',
'color': 'Asphalt',
'size': '4x10',
'weight': '65',
'price': '242.4'},
'sku48-144-04-SLP3000': {
'sku': '48-144-04-SLP3000',
'type': 'pro',
'color': 'Asphalt',
'size': '4x12',
'weight': '78',
'price': '289.28'},
'sku48-096-04-SLP1000': {
'sku': '48-096-04-SLP1000',
'type': 'pro',
'color': 'Natural',
'size': '4x8',
'weight': '52',
'price': '178.88'},
'sku48-120-04-SLP1000': {
'sku': '48-120-04-SLP1000',
'type': 'pro',
'color': 'Natural',
'size': '4x10',
'weight': '65',
'price': '223.6'},
'sku48-144-04-SLP1000': {
'sku': '48-144-04-SLP1000',
'type': 'pro',
'color': 'Natural',
'size': '4x12',
'weight': '78',
'price': '268.32'},
'sku48-096-04-SL': {
'sku': '48-096-04-SL',
'type': 'original',
'color': 'Dirt',
'size': '4x8',
'weight': '45',
'price': '117.76'},
'sku48-120-04-SL': {
'sku': '48-120-04-SL',
'type': 'original',
'color': 'Dirt',
'size': '4x10',
'weight': '56',
'price': '147.2'},
'sku48-144-04-SL': {
'sku': '48-144-04-SL',
'type': 'original',
'color': 'Dirt',
'size': '4x12',
'weight': '68',
'price': '176.64'},	lastElement: true
};

var BSCart = {
	items:{},
	nextid: 0,
	shipping: null,
	tax: null,
	initialized: false,
	
	initialize: function()
	{
		var itemlist = readCookie("BSCart");
		if (itemlist != null && itemlist != "")
		{
			itemlist = itemlist.split(",");
			for (i=0; i<itemlist.length; i++)
			{
				itemvals = itemlist[i].split(":"); //0=sku, 1=price, 2=quantity
				this.addItem(itemvals[0], itemvals[2]);
			}
		}
		this.initialized = true;
		this.saveCart();
	},

	addItem: function()
	{
		//if the first argument is an array, use that as the arguments array
		if (typeof(arguments[0]) == "object")
			arguments = arguments[0]
		
		sku = arguments[0];
		quantity = arguments[1];
		
		var id = "item"+(this.nextid++);
		this.items[id] = new cartitem(sku, quantity);
		if (this.initialized)
			this.saveCart();
	},
	
	removeItem: function(id)
	{
		if (this.items[id])
		{
			delete this.items[id];
		}
		this.saveCart();
	},
	
	saveCart: function()
	{
		//store cart in cookie
		createCookie("BSCart", this.getSkuString(), 7); //cart will be saved for 1 week	
	},
	
	getItemArray: function()
	{
		arr = [];
		for (key in this.items)
		{
			var thisitem = this.items[key];
			var attributes = [];
			for(attribute in thisitem)
				attributes.push(thisitem[attribute]);
			arr.push(attributes.join(","));
		}
		return arr;
	},
	
	getSkuString: function()
	{
		str = "";
		for(key in this.items)
		{
			var thisitem = this.items[key];
			str += thisitem.sku+":"+(thisitem.price/thisitem.quantity).toFixed(2)+":"+thisitem.quantity+",";
		}
		
		//remove trailing comma
		str = str.substr(0,str.length - 1);
		return str;
	},
	
	getTotal: function()
	{
		return this.getTaxable() + this.getTaxAmount();
	},
	
	getTaxable: function()
	{
		var total = 0;
		for (key in this.items)
		{
			var thisitem = this.items[key];
			total += thisitem.price;
		}	
		return total+this.shipping;
	},
	
	setShipping: function(shipping)
	{
		if (Number(shipping) != NaN)
			this.shipping = Number(shipping);
	},
	
	getShipping: function()
	{
		return this.shipping;
	},
	
	setTax: function(tax)
	{
		if (Number(tax) != NaN)
			this.tax = Number(tax);
	},
	
	getTaxAmount: function()
	{
		if (this.tax === null) return null;
		return (this.tax/100)*this.getTaxable();
	},
	
	getQuantity: function()
	{
		var total = 0;
		for (key in this.items)
		{
			var thisitem = this.items[key];
			total += thisitem.quantity;
		}
		return total;
	}
	
};

function cartitem(sku, quantity)
{
	itemData = stockItems["sku"+sku];
	return {type: itemData.type,
			quantity: Number(quantity),
			color: itemData.color,
			size: itemData.size,
			price: Number(itemData.price)*quantity,
			sku: sku
			};
}

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}