bhagya88 / bamazon

A console application which is like Amazon like store developed using - Node JS and MySQL. Demo- - https://github.com/bhagya88/bamazon/tree/master/demo

#Bamazon

Overview

Amazon like storefront where customers can purchase products. The app will take in orders from customers and depletes stock from the store's inventory. It also tracks product sales across the store's departments and then provides a summary of the highest-grossing departments in the store.

Demo

click to find demo on github

Technologies used

• Node.js
• Inquirer module
• Mysql module
• console.table module
• MYSQL - database

Challenges faced

• How to put together all the asynchronous functions and make them work?

Solutions found

• Understanding how promises work and how to use recursive functions helped solve the problem.

How it works

The app has 3 views. Customer View, Manager view and Executive view.

1. Customer view - BamazonCustomer.js

• Running this application will display all of the items available for sale. Include the ids, names, and prices of products for sale.

• Then app prompts users with two messages.

  • The first asks them the ID of the product they would like to buy.
  • The second message asks them how many units of the product they would like to buy.

• Once the customer has placed the order, the application checks if the store has enough of the product to meet the customer's request.

  • If not, the app logs the phrase Insufficient quantity!, and then prevents the order from going through.

• However, if the store does have enough of the product, application fulfills the customer's order.

  • This means updating the SQL database to reflect the remaining quantity.
  • Once the update goes through, it shows the customer the total cost of their purchase.

2. Manager View - BamazonManager.js

• Running this application will:

  • List a set of menu options:

    • View Products for Sale
    • View Low Inventory
    • Add to Inventory
    • Add New Product

  • If a manager selects View Products for Sale, the app lists every available item: the item IDs, names, prices, and quantities.

  • If a manager selects View Low Inventory, then it lists all items with a inventory count lower than five.

  • If a manager selects Add to Inventory, your app displays a prompt that will let the manager "add more" of any item currently in the store.

  • If a manager selects Add New Product, it allows the manager to add a completely new product to the store.

3. Executive View - BamazonExecutive.js

• Running this application will list a set of menu options:

  • View Product Sales by Department
  • Create New Department

• When an executive selects View Product Sales by Department, the app displays a summarized table in their terminal/bash window.

• The totalProfit is calculated on the fly using the difference between overheadCosts and totalSales. totalProfit is not stored in the database. totalProfit is a custom alias for (totalSales-overHeadCosts).

Developed by Bhagya