This project implements the checkout logic with discount and deals applied.

• Run npm install
• Run npm start
• Browser will be automatically launched. If not, go to http://localhost:3000/

According to the level of the user (Associate or Diamond), the discounted amounts are pre-configured as 5% for Associate and 20% for Diamond.

Two products are initially included. Quantity can be increased or decreased by clicking on + and - buttons respectively for each product. Once quantity is greater than zero, different discount and deal logics will be applied.

For Associate user, only discount 5% will be applied for products.

For Diamond user, both special deals and discount logics will be considered and applied according to the quantity specified.

• Get a discount on Kone where 3 or more purchased. The price dropped to RM 2588.99 per unit
• Get a 3 for 2 deal on Ironhide Cartridge

• RECIPIENT: Diamond
• Cart Items: Kone, Kone, Kone, Kone, Ironhide Cartridge
• Total Expected: RM 10779.95

For testing purpose, user level selector is included in the top right corner.

Currently, how to discount price according to deals is specified as below.

{
    id: 2,
    name: 'Ironhide Cartridge',
    price: 529.99,
    currency: 'RM',
    quantity: 0,
    discount: [
        // For Diamond Level user, if they buy 3 items, they will only have to pay for 2.
        {
            level: USER_LEVEL.DIAMOND,
            type: DISCOUNT_TYPE.DEAL,
            buy: 3,
            pay: 2,
        },
    ],
}

For easy configuration, different deal types can be specified to differnt level of users. Deal logic will be applied in calculating the subtotal.

Testing is done by @testing-library/react and tests are defined in __test__ folders for respective react functional components at both page level and component level. Tests can be checked by running npm test or npm run test.