Assumptions

• For multiple authors, it will be comma separator text

• No requirements to manage user-basket or order management, Only compute total cost is applied

• Same Promotion code could be applicable/configurable to multiple classification

• Duplication in check-out list, we could have multiple approaches

    - Ignored 
    - produce an error
    - A replacement for quantity, duplication of the same book id means requesting another copy of the same book (implemented)
  

• Assumption about minimum/Max data length

• Assume No pagination is required when listing all books

• Non-Functional Requirements are out-of the scope in current version (e.g. auditing, logging , security, ..)

Test Data

All data can be viewed on H2 DB @ http://localhost:8080/h2

• Promotion Code: PRO-210-000 10% discount on 'Fiction'
• Promotion Code: PRO-420-000 20% discount on 'Science'
• Promotion Code: 000-000-000 0% discount/no promotion on 'Comics'

Sample Request Body

{"name":"Core Java Volume I--Fundamentals","description":"Core Java, Volume I―Fundamentals, Eleventh Edition, is the definitive guide to writing robust, maintainable code. Whether you’re using Java SE 9, 10, or 11", "author":"Cay S. Horstmann", "isbn":"978-0135166307", "classification":"Technology", "price":"117.24"}

• Create: POST http://localhost:8080/api/books
• Read: GET http://localhost:8080/api/books/{id}
• Update: PUT http://localhost:8080/api/books/{id}
• Delete: DELETE http://localhost:8080/api/books/{id}

you can list available books using

GET	http://localhost:8080/api/books 

Check out

Using URL query paramters GET http://localhost:8080/api/checkout?books=1,2,3&promotionCode=PRO-420-000

or using POST with data in request body

POST http://localhost:8080/api/checkout 

 {
  "books":[1,2,3],
      "promotionCode":"PRO-420-000"
   }

Build & Running

./mvnw spring-boot:run

Build & Running as docker image

Build image using the following command

	docker build -t bs_img .
	
	docker run -p 8080:8080 bs_img