Building Node.js + PostgreSQL E-commerce app | Express | Payment Gateway | Strip | PayPal

We will build a full-stack e-commerce application using Node.js, PostgreSQL, and Express.js. We will cover user management, role-based access control, authentication with JWT, and APIs for managing orders, products, and inventory. We will also add an API for adding items to a cart, and an API for processing payments using Stripe, PayPal, Paytabs, and Paymob payment gateways. We will use Swagger to document our APIs, and create an entity-relationship diagram (ERD) to visualize our database schema. By the end of this tutorial, you will have a solid understanding of how to build a full-stack e-commerce application with payment gateway integration.

Here is a recap of the tasks we have covered so far:

1. We started by setting up a Node.js + PostgreSQL + Express.js application.
2. We created CRUD APIs for user management and role management, with role-based access control.
3. We added login and register APIs with password hashing and JWT authentication.
4. We added APIs for orders, products, and inventory management.
5. We added an API for adding items to a cart, and an API for checking out the cart and processing payments using Stripe, PayPal, Paytabs, and Paymob payment gateways.
6. We created an environment file to store environment variables for our application.
7. We documented our APIs using Swagger.
8. We created an entity-relationship diagram (ERD) to visualize our database schema.
9. We wrote SQL scripts to create and populate our database tables.
10. We wrote Postman tests to verify the functionality of our APIs.
11. Create API documentation as a word file