This is the final project for EECS 4413 (Building Ecommerce Systems) from Fall 2016 written in Java (with JEE) and vanilla javascript.

eFoods is a simple ecommerce website for food products with the following features:

• Display products on the homepage and category pages
• Ability to search for a specific product
• Shopping cart
• Checkouts
• Revisit and view previous purchase order summaries

For analytics, the management wants to be able to determine the average time taken for a client to add an item to the cart as well as the average time between a fresh visit and a checkout in one session. We must provide a way for these two statistics to be viewed & updated in real time.

Management wants to advertise a certain item when a related item is added to the cart on an ad-hoc basis. As a proof of concept, whenever the item number 1409S413 is added to the cart, cross-sell item number 2002H712. This functionality should not be part of the webapp since it may be disabled at any time without recompiling.

Users are redirected to a separate server (York University computer science servers) where they are prompted to log in to their CSE (computer science) account using HTTP Basic authentication. Once logged in, a perl script (auth.cgi) generates a hash and redirects back to eFoods where we validate the hash and determine if the authentication was successful.

The authentication flow is similiar to OAuth since we delegate authentication to a separate entity. The eFoods authentication endpoint only redirects to the other server and verifies received tokens.