// Cookie support functions
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);
}

var ResetForm;
var currentPostcode = "";
// This function will send an ajax request to check if we could delivery to this post code and with what fee
// After it get the result it change the layout of the form
function CheckPostCode(){
    $("#postCodeText").val( $("#postCodeText").val().replace(' ','').toUpperCase() );
    if(!$("#postCodeText").val().match("[A-Z]{1,2}[0-9R][0-9A-Z]?[0-9][ABD-HJLNP-UW-Z]{2}")){
        alert('The postcode you entered is incorrect. Please try again!');
    }
    else{
        $("#post-code-result").removeClass();        
        $("#post-code-result").html("<img src='/assets/images/loading.gif' /> Loading...");        
        
        var id = GetSelectedOption().ID;
        createCookie("userPostCode", $("#postCodeText").val(), 30);        
        $.ajax({
            type: "GET",
            url: "/DeliveryInformation/AJAXCheckDelivery.aspx?ProductOptionID=" + id + "&PostCode=" + $("#postCodeText").val(),
            error: function(){
                $("#post-code-result").html("Sorry, server error, please try again!");
                return false;
            },
            success: function(response){
                var extraID = response;
                // If found the suitable sub-option
                if(extraID.indexOf(",")>-1){
                    $("#post-code-result").addClass("extra-del-charge");
                    $("#post-code-result").html("<strong>Surcharge delivery  +" + extraID.split(',')[1] +  "</strong><br/>This surcharge will be added during check-out.");
                }else {
                    extraID = parseInt(extraID);
                    if(extraID > 0){
                        // select the option checkbox for this delivery
                        $("#sub-option-" + extraID).attr("checked", true);
						SelectExtraOptionChange($("#sub-option-" + extraID).get(0));
                        // Edit the form to show the extra charge
                        $("#post-code-result").addClass("extra-del-charge");
                        $("#post-code-result").html($("#sub-option-" + extraID).attr("text") + "<br/>This amount has been added to the price below.");
                    } 
                    // If it's free delivery
                    if( extraID == -2 ) {
                        $("#post-code-result").addClass("free-del-area");
                        $("#post-code-result").html("<strong>Delivery to your area is Free.</strong> Please add this product to basket and continue to checkout");
                        
                    }
                    // If we can't delivery to this post code
                    if( extraID == -1 ) {
                        $("#post-code-result").addClass("no-del-area");
                        $("#post-code-result").html("Sorry, we are currently unable to offer delivery to this area. Please check back again later.");                
                    }
                }
				currentPostcode = $("#postCodeText").val();
                GetInstallationForm();                    
                ResetForm = $("#post-code-form").html();
                $("#post-code-form").html("<b>" + $("#postCodeText").val() + "</b> <a onclick='ResetCheckForm()'>Not your post code?</a>");
            }
        });
    }
};

function ResetCheckForm(){
    // Clear any delivery option checked before
    if($("#deliver-service-checks input[type=checkbox]:checked").length > 0)
    {
        $("#deliver-service-checks input[type=checkbox]:checked").each(function(){
            $(this).attr("checked", false);
            SelectExtraOptionChange(this);
        });
    }   
    // Reset the form to original state
    $("#post-code-form").html(ResetForm);
    $("#post-code-result").removeClass();
    $("#post-code-result").html("");
	$("#optional-services").remove();
    eraseCookie("userPostCode");
}

function GetInstallationForm(){
	if(currentPostcode.length > 0){
		var id = GetSelectedOption().ID;
		$.ajax({
				type: "GET",
				url: "/ProductPage2/AJAX/AJAXInstallationOptions.aspx?ProductOptionID=" + id + "&PostCode=" + currentPostcode,
				error: function(){
					$("#post-code-result").html("Sorry, server error, please try again!");
					return false;
				},
				success: function(response){
					$("#optional-services").remove();
					$("#post-code-check").after(response);
				}
			});
	}
}

// When user select or unselect a service checkbox
function SelectServiceChanged(serviceID){
    var serviceSelection = "#service-" + serviceID;
    //If service is checked
    if($(serviceSelection).attr("checked")){
        // find the services from the list of services and add it to the list
        for(var idx=0; idx< Services.length; idx++){
            if(Services[idx].ID == serviceID){
                SelectedServices.push(Services[idx]);
                break;
            }
        }
    } else {
        // find the services from the list of services and remove it from the list
        for(var idx=0; idx< SelectedServices.length; idx++){
            if(SelectedServices[idx].ID == serviceID){
                SelectedServices.splice(idx, 1);
                break;
            }
        }        
    }
    var selectedServicesList = "";
    for(var idx =0;idx<SelectedServices.length; idx++){
        selectedServicesList += "," + SelectedServices[idx].ID;
    }
    selectedServicesList = selectedServicesList.substr(1, selectedServicesList.length-1);
    $("#services-values").val(selectedServicesList);
    UpdatePagePrices();
}

$(document).ready(function(){
	
	// Check cookie for user postcode first
	if(readCookie("userPostCode") != null){
		$("#postCodeText").val(readCookie("userPostCode"));
		CheckPostCode();
    }
    $("#postCodeText").watermark({ text: "Eg: AB12 3CD" });   
});