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package in.shop2020.serving.services;
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package in.shop2020.serving.services;
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import in.shop2020.model.v1.catalog.Item;
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import in.shop2020.model.v1.catalog.InventoryService.Client;
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import in.shop2020.model.v1.order.LineItem;
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import in.shop2020.model.v1.order.LineItem;
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import in.shop2020.model.v1.order.Order;
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import in.shop2020.model.v1.order.Order;
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import in.shop2020.model.v1.order.Transaction;
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import in.shop2020.model.v1.order.Transaction;
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import in.shop2020.model.v1.order.TransactionServiceException;
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import in.shop2020.model.v1.order.TransactionServiceException;
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import in.shop2020.model.v1.order.TransactionStatus;
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import in.shop2020.model.v1.order.TransactionStatus;
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import in.shop2020.model.v1.user.Line;
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import in.shop2020.model.v1.user.Line;
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import in.shop2020.model.v1.user.PromotionException;
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import in.shop2020.model.v1.user.PromotionException;
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import in.shop2020.model.v1.user.ShoppingCartException;
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import in.shop2020.model.v1.user.ShoppingCartException;
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import in.shop2020.payments.Payment;
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import in.shop2020.payments.Payment;
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import in.shop2020.payments.PaymentException;
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import in.shop2020.payments.PaymentException;
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import in.shop2020.serving.utils.Utils;
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import in.shop2020.thrift.clients.CatalogClient;
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import in.shop2020.thrift.clients.PaymentClient;
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import in.shop2020.thrift.clients.PaymentClient;
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import in.shop2020.thrift.clients.PromotionClient;
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import in.shop2020.thrift.clients.PromotionClient;
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import in.shop2020.thrift.clients.TransactionClient;
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import in.shop2020.thrift.clients.TransactionClient;
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import in.shop2020.thrift.clients.UserClient;
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import in.shop2020.thrift.clients.UserClient;
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	 *            The transaction against which the payment has to be created.
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	 *            The transaction against which the payment has to be created.
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	 * @param gatewayId
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	 * @param gatewayId
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	 * @return True if the payment object is successfully created, False
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	 * @return True if the payment object is successfully created, False
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	 *         otherwise.
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	 *         otherwise.
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	 */
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	 */
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	public boolean createPayment(long currentCartId, long userId, long txnId, int gatewayId){
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	public boolean createPayment(long currentCartId, long userId, long txnId, int gatewayId, long sourceId){
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		PaymentClient paymentServiceClient = null;
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		PaymentClient paymentServiceClient = null;
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		try {
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		try {
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			paymentServiceClient = new PaymentClient();
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			paymentServiceClient = new PaymentClient();
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		} catch (Exception e) {
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		} catch (Exception e) {
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			log.error("Error while getting payment client", e);
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			log.error("Error while getting payment client", e);
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			return PAYMENT_NOT_CREATED;
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			return PAYMENT_NOT_CREATED;
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		}
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		}
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		try {
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		try {
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			amount = calculatePaymentAmount(currentCartId);
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			amount = calculatePaymentAmount(currentCartId, sourceId);
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		} catch (ShoppingCartException e1) {
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		} catch (ShoppingCartException e1) {
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			log.error("Unable to fetch payment amount from cart id.", e1);
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			log.error("Unable to fetch payment amount from cart id.", e1);
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			return PAYMENT_NOT_CREATED;
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			return PAYMENT_NOT_CREATED;
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		} catch (TException e1) {
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		} catch (TException e1) {
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			log.error("Unable to fetch payment amount.", e1);
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			log.error("Unable to fetch payment amount.", e1);
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	 * @return The total amount for which a payment should be created.
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	 * @return The total amount for which a payment should be created.
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	 * @throws ShoppingCartException
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	 * @throws ShoppingCartException
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	 *             If no cart can be found for the given id.
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	 *             If no cart can be found for the given id.
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	 * @throws TException
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	 * @throws TException
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	 */
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	 */
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	private double calculatePaymentAmount(long cartId) throws ShoppingCartException, TException{
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	private double calculatePaymentAmount(long cartId, long sourceId) throws ShoppingCartException, TException{
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		double totalAmount = 0;
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		double totalAmount = 0;
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		Cart cart;
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		Cart cart;
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		UserClient userContextServiceClient = null;
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		UserClient userContextServiceClient = null;
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		try {
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		try {
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			userContextServiceClient = new UserClient();
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			userContextServiceClient = new UserClient();
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	        for (Line line : lineItems) {
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	        for (Line line : lineItems) {
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	            long productId = line.getItemId();
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	            long productId = line.getItemId();
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	            // FIXME: It's expensive to get the price of each item from the
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	            // FIXME: It's expensive to get the price of each item from the
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	            // catalog service. We maintain the pricing info in the line items
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	            // catalog service. We maintain the pricing info in the line items
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	            // themselves now.
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	            // themselves now.
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	            totalAmount =  totalAmount + line.getQuantity() * Utils.getItemPrice(productId);
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	            totalAmount =  totalAmount + line.getQuantity() * getItemPrice(productId, sourceId);
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	        }
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	        }
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		} else {
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		} else {
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		    totalAmount = cart.getDiscountedPrice();
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		    totalAmount = cart.getDiscountedPrice();
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		}
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		}
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		return totalAmount;
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		return totalAmount;
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	}
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	}
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	private double getItemPrice(long itemId, long sourceId){
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		CatalogClient catalogClient = null;
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		Client client = null;
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		Double itemPrice = 0.0;
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		try {
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			catalogClient = new CatalogClient();
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			client = catalogClient.getClient();
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			Item item = client.getItemForSource(itemId, sourceId);
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			itemPrice = item.getSellingPrice();
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		} catch(Exception e){
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			log.error("Unable to get the item price because of:", e);
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		}
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		return itemPrice;
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	}
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	/**
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	/**
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	 * Removes the items processed through the given transaction from the
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	 * Removes the items processed through the given transaction from the
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	 * shopping cart.
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	 * shopping cart.
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	 *
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	 *
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	 * @param transaction
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	 * @param transaction