//global variables
var combinations = new Array();
var selectedCombination = new Array();
var globalQuantity = new Number;
var colors = new Array();


//add a combination of attributes in the global JS sytem
function addCombination(idCombination, arrayOfIdAttributes, quantity, price, ecotax, id_image, reference)
{
	globalQuantity += quantity;

	var combination = new Array();
	combination['idCombination'] = idCombination;
	combination['quantity'] = quantity;
	combination['idsAttributes'] = arrayOfIdAttributes;
	combination['price'] = price;
	combination['ecotax'] = ecotax;
	combination['image'] = id_image;
	combination['reference'] = reference;
	combinations.push(combination);
}

// search the combinations' case of attributes and update displaying of availability, prices, ecotax, and image
function findCombination( prod_id, firstTime)
{
	//create a temporary 'choice' array containing the choices of the customer
	var choice = new Array();
	$('div#attributes select').each(function(){
		choice.push($(this).val());
	});
	var nbAttributesEquals = 0;
	//testing every combination to find the conbination's attributes' case of the user
	
	for (combination in combinations)
	{
		//verify if this combinaison is the same that the user's choice
		nbAttributesEquals = 0;
		for (idAttribute in combinations[combination]['idsAttributes'])
		{
			//ie6 bug fix
			if (idAttribute != 'indexOf'){
				//if this attribute has been choose by user
				if (in_array(combinations[combination]['idsAttributes'][idAttribute], choice))
				{
					//we are in a good way to find the good combination !
					nbAttributesEquals++;
				}
			}
		}
		
		if (nbAttributesEquals == choice.length)
		{
			//combination of the user has been found in our specifications of combinations (created in back office)
			selectedCombination['unavailable'] = false;
			selectedCombination['reference'] = combinations[combination]['reference'];
			$('#idCombination').val(combinations[combination]['idCombination']);

			//get the data of product with these attributes
			quantityAvailable = combinations[combination]['quantity'];
			selectedCombination['price'] = combinations[combination]['price'];
			if (combinations[combination]['ecotax'])
				selectedCombination['ecotax'] = combinations[combination]['ecotax'];
			else
				selectedCombination['ecotax'] = default_eco_tax;
			
			//show the large image in relation to the selected combination
			if (combinations[combination]['image'] && combinations[combination]['image'] != -1)
				displayImage( $('#thumb_'+combinations[combination]['image']).parent() );
			
			//update the display
			updateDisplay();

			if(typeof(firstTime) != 'undefined' && firstTime)
				refreshProductImages(0);
			else
				refreshProductImages(combinations[combination]['idCombination']);
			//leave the function because combination has been found
			return;
		}
	}
	//this combination doesn't exist (not created in back office)
	selectedCombination['unavailable'] = true;
	updateDisplay( prod_id );
}


//update display of the availability of the product AND the prices of the product
function updateDisplay( prod_id )
{

    var definedAllowBuyWhenOutOfStock = eval( 'allowBuyWhenOutOfStock_' + prod_id );
    var definedDoesntExist = eval( 'doesntExist_' + prod_id );
    var definedProductReference = eval( 'productReference_' + prod_id );
    
	if (!selectedCombination['unavailable'] && quantityAvailable > 0)
	{
		//show the choice of quantities
		$('#quantity_wanted_p:hidden').show('slow');
		
		//show the "add to cart" button ONLY if it was hidden
		$('#add_to_cart:hidden').fadeIn(600);
		
		//hide the hook out of stock
		$('#oosHook').hide();
		
		//availability value management
		if (availableNowValue != '')
		{
			//update the availability statut of the product
			$('#availability_value').removeClass('warning-inline');
			$('#availability_value').text(availableNowValue);
			$('#availability_statut:hidden').show();
		}
		else
		{
			//hide the availability value
			$('#availability_statut:visible').hide();
		}
		
		//'last quantities' message management
		if (quantityAvailable <= maxQuantityToAllowDisplayOfLastQuantityMessage && !definedAllowBuyWhenOutOfStock)
		{
			//display the 'last quantities' message
			$('#last_quantities').show('slow');
		}
		else
		{
			//hide the 'last quantities' message
			$('#last_quantities').hide('slow');
		}
	
		//display the quantities of pieces (only if allowed)
		if (quantitiesDisplayAllowed)
		{
			$('#pQuantityAvailable:hidden').show('slow');
			$('#quantityAvailable').text(quantityAvailable); 
			if(quantityAvailable < 2)
			{
				$('#quantityAvailableTxt').show();
				$('#quantityAvailableTxtMultiple').hide();
			}
			else
			{
				$('#quantityAvailableTxt').hide();
				$('#quantityAvailableTxtMultiple').show();
			}
		}
	}
	else
	{
		//show the hook out of stock
		$('#oosHook').show();
		if ($('#oosHook').length > 0 && function_exists('oosHookJsCode'))
			oosHookJsCode();
		
		//hide 'last quantities' message if it was previously visible
		$('#last_quantities:visible').hide('slow');

		//hide the quantity of pieces if it was previously visible
		$('#pQuantityAvailable:visible').hide('slow');
		
		//hide the choice of quantities
		if (!definedAllowBuyWhenOutOfStock)
			$('#quantity_wanted_p:visible').hide('slow');
		
		//display that the product is unavailable with theses attributes
		if (!selectedCombination['unavailable'])
			$('#availability_value').text(doesntExistNoMore + (globalQuantity > 0 ? ' ' + doesntExistNoMoreBut : '')).addClass('warning-inline');
		else
			$('#availability_value').text(definedDoesntExist).addClass('warning-inline');
		$('#availability_statut:hidden').show();

		
		//show the 'add to cart' button ONLY IF it's possible to buy when out of stock AND if it was previously invisible
		if (definedAllowBuyWhenOutOfStock && !selectedCombination['unavailable'])
		{
			$('#add_to_cart:hidden').fadeIn(600);

			if (availableLaterValue != '')
			{
				$('#availability_value').text(availableLaterValue);
				$('p#availability_statut:hidden').show('slow');
			}
			else
				$('p#availability_statut:visible').hide('slow');			
		}
		else
		{
			$('#add_to_cart:visible').fadeOut(600);
			$('p#availability_statut:hidden').show('slow');
		}
	}
	
	if (selectedCombination['reference'] || definedProductReference)
	{
		if (selectedCombination['reference'])
			$('#product_reference span').text(selectedCombination['reference']);
		else if (definedProductReference)
			$('#product_reference span').text(definedProductReference);
		$('#product_reference:hidden').show('slow');
	}
	else
		$('#product_reference:visible').hide('slow');
	
	//update display of the the prices in relation to tax, discount, ecotax, and currency criteria
	if (!selectedCombination['unavailable'])
	{
		var attribut_price_tmp = selectedCombination['price'];

		var tax = (taxRate / 100) + 1;

		if (noTaxForThisProduct)
			attribut_price_tmp /= tax;

		var productPriceWithoutReduction2 = (ps_round(attribut_price_tmp * currencyRate) + productPriceWithoutReduction);
		
		if (reduction_from != reduction_to && (currentDate > reduction_to || currentDate < reduction_from))
			var priceReduct = 0;
		else
			var priceReduct = productPriceWithoutReduction2 / 100 * parseFloat(reduction_percent) + (reduction_price * currencyRate);
		var priceProduct = productPriceWithoutReduction2 - priceReduct;
		
		var productPricePretaxed = (productPriceWithoutReduction2 - priceReduct) / tax;

		if (displayPrice == 1)
		{
			priceProduct = productPricePretaxed;
			productPriceWithoutReduction2 /= tax;
		}

		if (group_reduction)
		{
			priceProduct *= group_reduction;
			productPricePretaxed *= group_reduction;
		}
		
		$('#our_price_display').text(formatCurrency(priceProduct, currencyFormat, currencySign, currencyBlank));
		$('#pretaxe_price_display').text(formatCurrency(productPricePretaxed, currencyFormat, currencySign, currencyBlank));
		$('#old_price_display').text(formatCurrency(productPriceWithoutReduction2, currencyFormat, currencySign, currencyBlank));
		$('#ecotax_price_display').text(formatCurrency(selectedCombination['ecotax'], currencyFormat, currencySign, currencyBlank));
	}
}