calculateDiscount: Calculate discount from bundles of products
In komisarczyks/CheckoutComponent: Checkout Component

For every set of two products located on the list of discounts function calculates the minimum amount of items purchased. This value is a total number of bundles of a specific type and it is multiplied by a discount value for this bundle to get the total discount value. Those steps are repeated for every defined discount to create a final table of discounts.

1	calculateDiscount(items, discounts)

`items`	data.frame with all items that are purchased. Contains 2 columns: 'Item' with product name and 'Count' with the amount of items purchased
`discounts`	data.frame with all discounts for bundle of two products purchased together. Contains 3 columns: 'Item1', 'Item2' (product names) and Discount (applied to every pair of two defined products).

Function returns a data.frame with 4 columns ("Item", "Count", "Discount" and "Cost" - same format as in calculateSingleItemCost function). Each row is a seperate discount from a bundle of two products. The value in 'Discount' column is created by combining the names of two products in a bundle. The value in Cost column is negative to represent that the discount should be deducted from the final cost.

komisarczyks/CheckoutComponent documentation built on May 20, 2019, 12:55 p.m.