// UPDATE BASKET COUNT
// ===================
// - function to update the counter shown on the web site of how many items are in the basket
	function fShopBasketUpdateCounter() {

		// define the url to call
		sAjaxURL = "ajax/shop_basket_item-count.php";

		// open URL using AJAX
		$.get(sAjaxURL, function(data) {

			// get the result
			$('.result').html(data);

			// save the results
			var nShopBasketItemCount = parseInt(data);

			// update the div
			document.getElementById('nShopBasketItemCount').innerHTML=nShopBasketItemCount;

		});

	}


// ADD TO BASKET
// ==============
// - used on catalogue_list.php and catalogue_detail.php
// - needs dialogAddToBasket_Inner to be on the page
// - is reliant on various fields being in place on the page (bShopLimitOrderByStockLevels)


	// show buy modal
	// ===============
		function fBuy(nShopProd_ID) {

			// load the add to basket modal
				$( "#dialogAddToBasket" ).dialog();
				$( "#dialogAddToBasket" ).dialog( "option", "height", 350 );
				$( "#dialogAddToBasket" ).dialog( "option", "width", 350 );

			// get the add form page
				$.get('ajax/shop_basket_add_form.php?nShopProd_ID='+nShopProd_ID, function(data) {

					// get the result
					$('.result').html(data);

					// save to the empty div in the modal box we have just loaded
					document.getElementById('dialogAddToBasket_Inner').innerHTML=data;
				});
		}



	// add to basket button
	// =====================
		function fBuy_AddToBasket(nShopProd_ID) {

			// check that they aren't already ordering more than available
			// ============================================================

				if (document.getElementById('bShopLimitOrderByStockLevels').value=="1") { // check the hidden field with bShopLimitOrderByStockLevels which defines whether to limit by stock levels (this comes from tblSettings in the DB)

					// check whether there are options for this product
						if (document.getElementById('nProdOptionCount').value>0) {

							// there are options
							var sAjaxURL = "ajax/shop_basket_already-in-basket.php?nShopProd_ID="+nShopProd_ID+"&nShopProdOption_ID="+document.getElementById('nShopProdOption_ID').value;

						} else {

							// no options
							var sAjaxURL = "ajax/shop_basket_already-in-basket.php?nShopProd_ID="+nShopProd_ID;

						}

					// work out how many of this item are already in the basket
						$.get(sAjaxURL, function(data) {

							// get the result
							$('.result').html(data);

							// save the results
							var nStockAlreadyInBasket = parseInt(data);

							/// get the stock count
							if (parseInt($('#nProdOptionCount').val()) == 0) {
								var nStockCount = $('#nStockCount').val();
							} else {
								var nStockCount = $('input[name="nStockCount_option_' + $('#nShopProdOption_ID').val() + '"]').val();
							}

							// check to see if the qty being ordered is greater than the amount in stock + amount already in basket
								if (parseInt(document.getElementById('nQty').value)  > (parseInt(nStockCount) - parseInt(nStockAlreadyInBasket))) {

									sError = "Sorry there aren't enough of this item in stock to be able to add "+document.getElementById('nQty').value+" to your basket.";

									if (parseInt(nStockAlreadyInBasket)>0) {
										sError+= "\n\n\nThere is "+nStockCount+" in stock, and "+nStockAlreadyInBasket+" already in your basket. Did you realise you already had this item in your basket?";
									} else {
										sError+= "\n\n\nThere is "+nStockCount+" in stock.";
									}

									sError+="\n\n\nPlease change the amount you're trying to order or contact us about availability if you need more than we have available";

									alert(sError);
								} else {
									// call add to basket go function
									fBuy_AddToBasket_Go(nShopProd_ID);
								}

						});

				} else {

					// call add to basket go function
					fBuy_AddToBasket_Go(nShopProd_ID);

				}




		}



	// add to basket button
	// =====================
		function fBuy_AddToBasket_Go(nShopProd_ID) {

			// work out the URL to call

				if (document.getElementById('nProdOptionCount').value>0) { // work out if there are options
					// thera are options
					var sAjaxURL = 'ajax/shop_basket_add_exec.php?nShopProd_ID='+nShopProd_ID+'&nShopProdOption_ID=' + document.getElementById('nShopProdOption_ID').value + '&nQty='+document.getElementById('nQty').value;
				} else {
					// there are no options
					var sAjaxURL = 'ajax/shop_basket_add_exec.php?nShopProd_ID='+nShopProd_ID+'&nQty='+document.getElementById('nQty').value;
				}

			// call the add basket exec page

				$.get(sAjaxURL, function(data) {

					// get the result
					$('.result').html(data);

					// close the modal window
					$( "#dialogAddToBasket" ).dialog( "close" );

					// alert the results
					alert(data);

				});

			// update the basket counter
				fShopBasketUpdateCounter();

		}


	// add to basket button
	// =====================
		function fBuy_Close() {

			// close the modal window
			$( "#dialogAddToBasket" ).dialog( "close" );

		}

// page numbers
// =============
function fPageChange(nPageNo, reload) {


	if(typeof(reload) === 'undefined') {
		reload = true;
	}

	$.ajax({
		data: 'nPageNumber=' + escape(nPageNo),
		url: 'ajax/pagination.php',
		type: 'POST',
		success: function(response) {
			if(reload) {
				window.scrollTo(0,0);
				window.location.reload();
			}
		},
		error: function(response) {
			console.log(response);
		}
	});
}


	// ITEMS PER PAGE
	// ===============
		function fItemsPerPage(nItemsPerPage, bTop) {
			$.cookie('nItemsPerPage', nItemsPerPage);

			// Get values
				var nCurrentItemsPerPage = $("input[name='nItemsPerPage']").val();
				var nCurrentPageNo = $("input[name='nPageNo']").val();
				var nTotalItems = $("input[name='nProdCount']").val();

			if(bTop)
			{
				var nProductID = $(".ProductListing").first().attr("data-productid");
			}
			else var nProductID = $(".ProductListing").last().attr("data-productid");
			$.cookie('nProductToScrollTo', nProductID);

			if(nCurrentPageNo > 1)
			{
				// Work out items seen already
					var nItemsSeenAlready = nCurrentItemsPerPage*(nCurrentPageNo-1);

				// Work out how many pages worth to skip
					var nNewPageNo = Math.ceil((nItemsSeenAlready+1)/nItemsPerPage);

				// Change to the new page
					fPageChange(nNewPageNo, true);
			}
			else
			{
				fPageChange(1,true);
			}
		}

		$(window).on("load", function(){
			if (typeof $.cookie('nProductToScrollTo') !== 'undefined'){
				if($(".ProductListing[data-productid='"+$.cookie('nProductToScrollTo')+"']").length)
				{
					$("html, body").animate({ scrollTop: $(".ProductListing[data-productid='"+$.cookie('nProductToScrollTo')+"']").offset().top-20}, 10);
				}

				$.removeCookie("nProductToScrollTo");
			}
		});





// EMAIL TO A FRIEND
// ==================

	// show modal box
	// ===============
		function fEmailToAFriend_Show() {

				// load the add to basket modal
					$( "#dialogEmailToAFriend" ).dialog();
					$( "#dialogEmailToAFriend" ).dialog( "option", "height", 350 );
					$( "#dialogEmailToAFriend" ).dialog( "option", "width", 350 );

		}


	// close modal box
	// ===============
		function fEmailToAFriend_Close() {

				// load the add to basket modal
					$( "#dialogEmailToAFriend" ).dialog( "close" );

		}


	// submit form (form verification)
	// ================================
		function fEmailToAFriend_Submit(nShopProd_ID) {

			// form fields
				var sYourName = document.getElementById('sEmailToAFriend_YourName').value;
				var sYourEmail = document.getElementById('sEmailToAFriend_YourEmail').value;
				var sTheirName = document.getElementById('sEmailToAFriend_TheirName').value;
				var sTheirEmail = document.getElementById('sEmailToAFriend_TheirEmail').value;

			// form verification
				var sErr = "";

				if (sYourName=="") {
					sErr+="\n - Please enter your name";
				}
				if (fCheckEmail(sYourEmail)=="invalid") {
					sErr+="\n - Your email address isn't valid";
				}
				if (sTheirName=="") {
					sErr+="\n - Please enter your friend's name";
				}
				if (fCheckEmail(sTheirEmail)=="invalid") {
					sErr+="\n - Your friend's email address isn't valid";
				}

				if (sErr!="") {
					alert("There were some problems submitting the form. Please see below:\n"+sErr);
				} else {
					fEmailToAFriend_Process(nShopProd_ID);
				}

			// submit form via ajax

		}


	// submit form (process)
	// ================================
		function fEmailToAFriend_Process(nShopProd_ID) {

			// form fields
				var sYourName = document.getElementById('sEmailToAFriend_YourName').value;
				var sYourEmail = document.getElementById('sEmailToAFriend_YourEmail').value;
				var sTheirName = document.getElementById('sEmailToAFriend_TheirName').value;
				var sTheirEmail = document.getElementById('sEmailToAFriend_TheirEmail').value;

			// define AJAX url
				var sAjaxURL = "ajax/catalogue_detail_email-to-a-friend_exec.php?sYourName=" + sYourName + "&sYourEmail=" + sYourEmail + "&sTheirName=" + sTheirName + "&sTheirEmail=" + sTheirEmail + "&nShopProd_ID=" + nShopProd_ID;


			// call ajax URL
				$.get(sAjaxURL, function(data) {

					// get the result
					$('.result').html(data);

					// close the modal window
					$( "#dialogEmailToAFriend" ).dialog( "close" );

					// alert the results
					alert(data);

				});

		}



// EMAIL ENQUIRY
// ==============

	// show modal box
	// ===============
		function fEmailEnquiry_Show() {

				// load the add to basket modal
					$( "#dialogEmailEnquiry" ).dialog();
					$( "#dialogEmailEnquiry" ).dialog( "option", "height", 420 );
					$( "#dialogEmailEnquiry" ).dialog( "option", "width", 350 );

		}


	// close modal box
	// ===============
		function fEmailEnquiry_Close() {

				// load the add to basket modal
					$( "#dialogEmailEnquiry" ).dialog( "close" );

		}


	// submit form (form verification)
	// ================================
		function fEmailEnquiry_Submit(nShopProd_ID) {

			// form fields
				var sYourName = document.getElementById('sEmailEnquiry_YourName').value;
				var sYourEmail = document.getElementById('sEmailEnquiry_YourEmail').value;
				var sEnquiry = document.getElementById('sEmailEnquiry_Enquiry').value;

			// form verification
				var sErr = "";

				if (sYourName=="") {
					sErr+="\n - Please enter your name";
				}
				if (fCheckEmail(sYourEmail)=="invalid") {
					sErr+="\n - Your email address isn't valid";
				}
				if (sEnquiry=="") {
					sErr+="\n - Please enter your enquiry / message";
				}

				if (sErr!="") {
					alert("There were some problems submitting the form. Please see below:\n"+sErr);
				} else {
					fEmailEnquiry_Process(nShopProd_ID);
				}

			// submit form via ajax

		}


	// submit form (process)
	// ================================
		function fEmailEnquiry_Process(nShopProd_ID) {

			// form fields
				var sYourName = document.getElementById('sEmailEnquiry_YourName').value;
				var sYourEmail = document.getElementById('sEmailEnquiry_YourEmail').value;
				var sEnquiry = document.getElementById('sEmailEnquiry_Enquiry').value;

			// define AJAX url
				var sAjaxURL = "ajax/catalogue_detail_enquiry_exec.php?sYourName=" + sYourName + "&sYourEmail=" + sYourEmail + "&sEnquiry=" + sEnquiry + "&nShopProd_ID=" + nShopProd_ID;


			// call ajax URL
				$.get(sAjaxURL, function(data) {

					// get the result
					$('.result').html(data);

					// close the modal window
					$( "#dialogEmailEnquiry" ).dialog( "close" );

					// alert the results
					alert(data);

				});

		}






// dimension handler
function fShowInches() {

	// hide metric and show inches
	$('#metric').stop().animate({"top" : "50px"});
	$('#inches').stop().animate({"top" : "0px"});

	$('#metricHandler').removeClass('selectedDimension');
	$('#inchesHandler').addClass('selectedDimension');


	fDimensionCookieSet('inches');

}

function fShowMetric() {

	// hide inches and show metric
	$('#metric').stop().animate({"top" : "0px"});
	$('#inches').stop().animate({"top" : "50px"});
	//$('#inches').slideUp();
	//$('#metric').slideDown();

	// change the colours of the handlers

	$('#metricHandler').addClass('selectedDimension');
	$('#inchesHandler').removeClass('selectedDimension');

	fDimensionCookieSet('metric');

}


function fDimensionCookieSet(sDimensionType){
	$.ajax({
			data: 'sDimensionType=' + sDimensionType,
			type: 'post',
			url: 'ajax/dimension-cookie-set.php',
			success: function(response) {
				//No response required
			}
		});
}

function fDimensionHandler() {
	$('#questionHandler').fadeIn();
}

function fDimensionHandlerHide() {
	$('#questionHandler').fadeOut();
}



// show sales enquiry field
function fSalesEnquiry() {
	$('.topSection').fadeOut();
	$('#salesEnquiry').delay(500).fadeIn();
	$('#name').focus();
}

function fHideEnquiry() {
	$('#salesEnquiry').fadeOut();
	$('.topSection').delay(500).fadeIn();
}