function getBasicDatalayer(dataLayerP4)
{
	var dataLayer = jQuery.extend({}, dataLayerP4);

	if (dataLayer.impressions)
		delete dataLayer.impressions;

	if (dataLayer.products)
		delete dataLayer.products;

	if (typeof getCustomDatalayer == "function")
	{
		return getCustomDatalayer(dataLayerP4, null, null);
	}

	return dataLayer;
}

function buildEcommerce(dataLayerP4, step, option)
{
	setAdvisorCurrency(dataLayerP4);

	var ecommerceDl = {
			  'ecommerce': {
			    'currencyCode': getCurrencyCode(),
			  }
			};

	if (dataLayerP4.impressions)
	{
		ecommerceDl.ecommerce.impressions = buildImpressions(dataLayerP4);
	}

	if (dataLayerAction == "checkout")
	{
		ecommerceDl.ecommerce.checkout = {
			'actionField' : { 'step' : step, 'option' : option },
			'products': buildProductsFromDatalayer(dataLayerP4)
		};
	}

	if (dataLayerAction == "transaction_complete")
	{
		ecommerceDl.ecommerce.purchase = {
			'actionField':
			{
		        'id': dataLayerP4.transactionId,
		        'revenue': dataLayerP4.totalPrice,
		        'tax': dataLayerP4.totalFee
		    },
			'products': buildProductsFromDatalayer(dataLayerP4)
		};

		if (dataLayerP4.affiliateId)
			purchaseDL.ecommerce.purchase.actionField.affiliation = dataLayerP4.affiliateId;

		if (dataLayerP4.coupon)
			purchaseDL.ecommerce.purchase.actionField.coupon = dataLayerP4.coupon;
	}

	if (typeof getCustomDatalayer == "function")
	{
		return getCustomDatalayer(dataLayerP4, 0, null);
	}

	return ecommerceDl;
}


/**
 * Generates the necessary events for web analytics based on the dataLayerAction 
 * @param dataLayerP4
 * @param step
 * @param option
 */
function pushEcommerce(dataLayerP4, step, option)
{
	setAdvisorCurrency(dataLayerP4);
	
	if (dataLayerAction === "event_landing") 
	{
		var prodView = buildProductsFromDatalayer(dataLayerP4);
	    dataLayer.push({
	        event: 'view_item',
	        ecommerce: {
	            items: {
					'id': dataLayerP4.eventId,
                    'name': dataLayerP4.eventName,
                    'category': dataLayerP4.venue,
                    'provider': dataLayerP4.provider,
                    'promoter': dataLayerP4.promoter,
	                'actionField': {
	                    'id': dataLayerP4.eventId,
	                    'name': dataLayerP4.eventName,
	                    'category': dataLayerP4.venue,
	                    'provider': dataLayerP4.provider,
	                    'promoter': dataLayerP4.promoter,
	                },
	                'products': prodView
	            }
	        }
	    });
	} else if (dataLayerAction === "checkout") 
	{
		var prodCheckout = buildProductsFromDatalayer(dataLayerP4);
		dataLayer.push({
	        event: "begin_checkout",
	        ecommerce: {
	            items: {
	                'actionField': {
	                    'step': step,
	                    'option': option,
	                },
	                'products': prodCheckout
	            }
	        }
	    });

	} else if (dataLayerAction === "transaction_complete") 
	{
		var prodPurchase = buildProductsFromDatalayer(dataLayerP4);
	    dataLayer.push({
	        event: "purchase",
	        ecommerce:
	        {
				id: dataLayerP4.transactionId,
				currency: dataLayerP4.advisorCurrency,
				value: dataLayerP4.totalPrice,
				shipping: dataLayerP4.totalFee,
	            items:
	            {
	                'actionField': 
	                {
					'id': dataLayerP4.transactionId,
                    'revenue': dataLayerP4.totalPrice, 
                    'tax': dataLayerP4.totalFee,
                    'products': prodPurchase
	                },
	                'products': prodPurchase
	            }
	        }
	    });
	} 

}

/**
 * Genera el DataLayer para un determinado paso de compra
 * @param dataLayerP4
 * @param step
 * @param option
 * @returns checkoutDL
 */
function generarCheckout(dataLayerP4, step, option, sale)
{
	setAdvisorCurrency(dataLayerP4);

	if (!dataLayerP4.products)
	{
		dataLayerP4.products = buildProductsFromDatalayer(dataLayerP4);
	}
	else if (sale)
	{
		dataLayerP4.products = buildProductsFromSale(dataLayerP4, sale);
	}

	if (typeof getCustomDatalayer == "function")
	{
		return getCustomDatalayer(dataLayerP4, step, sale);
	}

	return [
		{event: 'checkout'},
		{
			'ecommerce' :
			{
				'checkout' :
				{
					'actionField' : { 'step' : step, 'option' : option },
					'products': dataLayerP4.products
				}
			}
		}
	];
}

/**
 * Builds impressions for data layer's ecommerce
 * @param dataLayerP4
 * @returns
 */
function buildImpressions(dataLayerP4)
{
	if (dataLayerP4.impressions)
	{
		var impressions = new Array();

		for (var i in dataLayerP4.impressions)
		{
			var impression = dataLayerP4.impressions[i];

			impressions[i] = {
		       'name': impression.name,
		       'id': impression.id,
		       'price': impression.price,
		       'brand': impression.brand,
		       'category': impression.category,
		       'variant': impression.variant
		     };
		}

		return impressions;
	}

	return null;
}

function buildProductClick(sale)
{
	if (sale != null)
	{
		var selectedProducts = [];

		let detalle = null;

		if (typeof sale.entradasSeleccionadas != 'undefined' && sale.entradasSeleccionadas != null)
		{
			detalle = sale.entradasSeleccionadas;
		}
		else if (typeof sale.detalle != 'undefined' && sale.detalle != null)
		{
			detalle = sale.detalle;
		}

		if (detalle != null)
		{
			for (var i in detalle)
			{
				var prod = detalle[i];
				selectedProducts.push({
					'name': prod.litEvento,
					'id': prod.idEvento,
					'price': prod.importe,
					'brand': prod.litRecinto,
//					'category': 'Apparel',
					'variant': prod.litProducto,
					'quantity': prod.cantidad,
					'dimension1' : prod.idSesion,
					'metric1' : prod.importeComisionUsuario,
		        });
			}

			var productClick = {
				'event': 'productClick',
			    'ecommerce': {
			    	'currencyCode': getCurrencyCode(),
			    	'click': {
			    		'products': selectedProducts
			    	}
			    }
			}
		}

		return productClick;
	}

	return null;
}

/**
 * Construye los productos para el DataLayer en un proceso de compra
 * @param dataLayerP4
 * @returns products
 */
function buildProductsFromDatalayer(dataLayerP4)
{
	var products = [];

	if (dataLayerP4.products)
	{
		for (let i = 0; i<dataLayerP4.products.length; i++)
		{
			var prod = dataLayerP4.products[i];

			products.push({
				'name': prod.eventName,
				'id': prod.eventId,
				'price': prod.price,
				'brand': prod.venue,
//			'category': 'Apparel',
				'variant': prod.product,
				'quantity': prod.qty,
				'dimension1' : prod.session,
				'metric1' : prod.fee,
			});
		}
	}

	return products;
}

function buildProductsFromSale(dataLayerP4, sale)
{
	var products = [];

	if (sale != null)
	{
		let detalle = null;

		if (typeof sale.entradasSeleccionadas != 'undefined' && sale.entradasSeleccionadas != null)
		{
			detalle = sale.entradasSeleccionadas;
		}
		else if (typeof sale.detalle != 'undefined' && sale.detalle != null)
		{
			detalle = sale.detalle;
		}

		for (var i in sale.detalle)
		{
			var dv = sale.detalle[i];

			products.push({
				'name': dataLayerP4.eventName,
				'id': dataLayerP4.eventId,
				'price': dv.importe + dv.iva,
				'brand': dataLayerP4.venue,
//				'category': 'Apparel',
				'variant': dv.litProducto,
				'quantity': dv.cantidad,
				'dimension1' : dv.idSesion,
				'metric1' : dv.importeComisionUsuario + dv.ivaComisionUsuario,
			});
		}
	}

	return products;
}

function setAdvisorCurrency(dataLayerP4)
{
	var currentCurrency = null;
	if (typeof finalCurrency != 'undefined' && finalCurrency != null)
	{
		currentCurrency = finalCurrency;
	}
	else
	{
		var storedCurrency = localStorage.currency;
		if (typeof storedCurrency != 'undefined' && storedCurrency != null)
		{
			currentCurrency = storedCurrency;
		}
		else if (typeof baseCurrency != 'undefined' && baseCurrency != null)
		{
			currentCurrency = baseCurrency;
		}
	}

	dataLayerP4.advisorCurrency = currentCurrency;
}

function pushGTMEvent(eventName)
{
	if (typeof pushCustomEvent == "function")
	{
		return pushCustomEvent(dataLayerP4);
	}

	dataLayer.push({event: eventName});
}