JavaScript Modular Client

Part 1: Refactoring

Understand the module pattern for JavaScript and make a refactoring of your code to have two layer modules (FrontEnd and Network):

• Network Layer -> Implement the method getOrders of the RestaurantRestController.js using the axios library to make the HTTP calls to the REST API.

• FrontEnd Layer -> Implement the method showOrdersByTable of the OrdersController.js

Reference: https://toddmotto.com/mastering-the-module-pattern/

Part 2: FrontEnd implementation - Orders

Modify the index.html page so it displays the following orders structure:

• Add the OrdersController.js and RestaurantRestController.js to the index.html
• Connect the modules with your HTML code:
  • Call the getOrders method of the RestaurantRestController module (You can add a log so you can verify that it actually retrieves the data from the server)
  • Connect the two modules by calling the OrdersController.js -> showOrdersByTable method from the RestaurantRestController.js once the request promise is completed.
• Call the showOrdersByTable function on the onload event so the orders load once tha page is loaded.

Part 2: Orders CRUD: FrontEnd

Create a new html page that has the following structure:

Implement the CRUD methods of the RestaurantRestController.js using the axios library to make the HTTP calls to the REST API.

- updateOrder
- deleteOrder

Implement the remaining methods of the OrdersController.js

- addItemToOrder
- updateOrder
- deleteOrderItem

• Call the getOrders function on the onload and store it on global variable

Connect your html components with your controllers:

• Implement a listener for the comboBox so when you change the order then the Update Orders table changes with the corresponding items (user the orders global variable).
• Call the function addItemToOrder when the Add button is clicked (make sure you validate the submitted data)
• Call the function updateOrder when the Update button is clicked (make sure you validate the submitted data)
• Call the function deleteOrderItem when the Delete button is clicked

Part 3: Orders CRUD: BackEnd

Implement the missing methods on your REST API in order to be able to serve your JavaScript client:

• updateOrder
• addItemToOrder
• deleteOrderItem