var iStockSelectClass = ".single-option-selector";
var iStockVarId = 0;
var iStockVarTitle = '';
if (typeof jQuery != 'undefined') {
	jQuery( document ).ready(function() {
		iStockInit();
		iStockOnSelectChange(0);
	});
}
else {
	window.onload = function() {
		iStockInit();
		iStockOnSelectChange(1);
	}
}

function iStockInit() {
	jQuery("#iStock-wrapper").hide();
	iStockVarId = getiStockVarId();
	if(!iStockVarId) {
		iStockVarId = iStockVariants[0].id;
	}
	console.log('iStockInit: VarId: '+ iStockVarId);

	istockNotifyShow(iStockVarId);
	jQuery("#iStock-notify-btn").click(function(e){
		jQuery('#iStock-msg').removeClass('iStock-error').hide();
		var emailId = jQuery('input#iStock-email-id').val();
		var iStockPTitle = ''+jQuery('input#iStock-product').val();
		if(iStockValidateEmail(emailId)==1) {
			jQuery('#iStock-msg').html("").addClass('iStock-error').show();
		}
		else {
			jQuery.ajax({
				url: '//istock.shopapps.in/front/add_notify.php',
				data: { shop: iStockShop, cust: emailId, vid: iStockVarId, pid: iStockProductId, vTitle: iStockVarTitle, pTitle: iStockPTitle },
				dataType: 'jsonp',
				jsonp: 'callback',
				jsonpCallback: 'iStockCallback',
				success: function(json) {
					console.log(JSON.stringify(json));
					jQuery('#iStock-msg').html(json.msg).show();
					jQuery('input#iStock-email-id').val('');
					if (typeof iStockAddFn !== 'undefined' && typeof iStockAddFn === 'function') { iStockAddFn();}
				},
				error: function(err, errorThrown) {
				}
			});
		}
	});
}

function iStockOnSelectChange(iniVal) {
	console.log("iStock change event called");
	if(typeof iStockproductFrm!= 'undefined') {
		iStockSelectClass = iStockproductFrm + ' ' + iStockSelectClass;
	}
	if(iniVal==1){
		jQuery(iStockSelectClass).change(function () {
			setTimeout(function(){
				iStockVarId = getiStockVarId();
				istockNotifyShow(iStockVarId);
			},500);
		});
	}
	else{
		var iCanUseOn = !!jQuery.fn.on;
		if(iCanUseOn) {
			jQuery(document).on('change', iStockSelectClass, function () {
				setTimeout(function(){
					iStockVarId = getiStockVarId();
					console.log('iStockOnSelectChange :: iStockVarId: '+iStockVarId);
					istockNotifyShow(iStockVarId);
				},500);
			});
		}
		else {
			jQuery(document).delegate(iStockSelectClass, 'change',  function () {
				setTimeout(function(){
					iStockVarId = getiStockVarId();
					console.log('iStockOnSelectChange :: iStockVarId: '+iStockVarId);
					istockNotifyShow(iStockVarId);
				},500);
			});
		}
	}
}

function istockNotifyShow(iStockVarId) {
	var variant = iStockGetVariant(iStockVarId);
	if(variant) {
		console.log('iStockVarId: '+variant.id+' quantity: '+ variant.inventory_quantity + ' title: '+variant.title);
	}
	if(variant && variant.inventory_management=='shopify' && variant.inventory_policy=='deny' && variant.inventory_quantity <= 0) {
		iStockVarTitle = variant.title;
		jQuery("#iStock-wrapper").show();
		jQuery.ajax({
			url: '//istock.shopapps.in/front/check-availability.php',
			data: { shop: iStockShop, vid: iStockVarId, pid: iStockProductId },
			dataType: 'jsonp',
			jsonp: 'callback',
			jsonpCallback: 'iStockCallback',
			success: function(json) {
				if(json.dt!=''){ jQuery("#iStock-availability").html(json.dt).show(); }
			},
			error: function(err) {
			}
		});
	}
	else{
		jQuery("#iStock-wrapper").hide();
	}	
}
function iStockGetVariant(iStockVarId) {
	for(i=0; i < iStockVariants.length; i++) {
		if(iStockVariants[i].id == iStockVarId) {
			return iStockVariants[i];
		}
	}
}
function getiStockVarId() {
	if(typeof iStockproductFrm!= 'undefined') {
		iStockvarid = jQuery(iStockproductFrm).find('[name=id]').val();
	}
	else {
		iStockvarid = jQuery('[name=id]').val();
		if(iStockvarid=='') {
			if (jQuery('[name=id]').length > 1) {
				iStockvarid = jQuery('[name=id]:eq(1)').val();
			}
		}
	}
	return iStockvarid;
}
function iStockValidateEmail(emailId) {
	var atpos = emailId.indexOf("@");
	var dotpos = emailId.lastIndexOf(".");
	if (atpos< 1 || dotpos<atpos+2 || dotpos+2>=emailId.length) { return 1; }
	else { return 0; }
}
/*function iStockCallback() {
}*/