simple-checkout-api

Digi-X “Lightning” Assessment for Developers:- this api include both section 1 and section 2

Section 1: Application Programming Interface

a.(i) GET:

GET method used to retreive data. A GET request doesn't change anything on the requested server. In this example i am using GET method here & it will display my cart items.

app.get('/', (req,res) =>  {
		res.send(db.total);
})

a. (ii) POST:

POST method used to create new resource. it is requested with either headers or data. this method also use to update a existing resource. I have used it on two places.

app.post('/signin', (req, res) => {
	// code
})

app.post('/register', (req, res) => {
	// code
})

a. (iii) & (iv) UPDATE & PUT:

PUT is used to Update resourse. it will points to the exact location of the resourse.

I have used a POSTMAN to test this API.

b. We will use the password hash.

there are many hashing algorithms e.g MD5, SHA, bcrypt etc. they are really effective for password security. I have used in my project of face detection api. It is applied on two tables one is for user table where user registration details are saved & second one is login table where i have save hash password of user & there email. when user is signed in he will add there email & password which are secure by hash.

here are the example github link of the project:

facedetection api server

facedetection frontend

front end link

backend link:

c. JSON API

JSON API format is best to be returned by an API as a response. because JSON is easy in learning, it will support array, it simple & easy to implement. JSOn is shorter, quicker to read and write. In comparison of JSON, XML is more dificult to parse than JSON. APIs depends on easy & fast data exchanges. JSON fulfil these statements while XML is struggling to keep up.

Section 2: Simple Checkout System

I have completed this checkout system with the test on POSTMAN software, & it fulfils the requirements described in your document file. I have commented all steps to be easy to understand. These files not only tested on localhost but also tested on my digital ocean server.

• We're going to have a 3 for 2 deal on Apple TVs. For example, if you buy 3 units of Apple TVs, you will only pay for the price of 2 units.

I have added three quantities together. but you can check it by adding single quantity 3 times. it show the price of 2 units.

• The brand new Super iPad will have a bulk discount applied, where the price will drop to $499.99 each, if someone buys more than 4 units.

Bulk discount on ipad is applied. if user add more than 4 ipad in cart then the bulk discount will applicable.

• We will bundle in a VGA adapter free of charge with every MacBook Pro sold.

I have tested it on my digital ocean server too. Thanks to Digi-X team for giving me this opportunity. main code is implemented in server.js file.