REST API: Discounted Price

Given a barcode, query the API at https://jsonmock.hackerrank.com/api/inventory?barcode=barcode and return the item's discounted price.

The response is a JSON object with 5 fields. The essential field is data:

data: Either an empty array or an array with a single object that contains the item's record.

In the data array, the item has the following schema:

barcode: the barcode for the product (String)

price: the gross selling price (Number)

discount: the discount percent to apply (Number).

Some fields that are not of interest.

page, per_page, total, total_pages, etc. are not required for this task.

If the barcode is found, the data array contains exactly 1 element. If not, it is empty and the function should return '-1'.

Use the "discount" and the "price" properties to calculate the discounted price rounded to the nearest integer.

discountedPrice = price - ((discount / 100) * price)