larbikhounti / progressive-payment-gateway

a payment structure gateway allowing for progressive development, making it easy to add new payment gateways in the future without needing to change the code structure.

progressive payment gateway structure

a payment structure gateway allowing for progressive development, making it easy to add new payment gateways in the future without needing to change the code structure.

what's the code is missing ?

• the pay(Card card) logic because every payment gateway has its own logic
• the checkCardValidation(Card card) logic to check if the card is valid

To add new payment gateway

Inside paymentProccessors directory add new class, for example Paypal that implements paymentProcessor, you will need to Override two methods pay(Card card) and checkCardValidation(Card card), both of them accepts ``Card``` as an arguments.

Building a new card

Card is using Builder pattern so you have to Build it like this for example :

Card card = new Card.CardBuilder()
                .setCardNumber("5350239959461533")
                .setSecurityNumber(369)
                .setExpiryDate("01/29")
                .setAddress("some street address")
                .setCardIssuer(CardIssuer.MASTERCARD)
                .setName("mr Mohamed khounti")
                .build();

then you need to pass the card to the pay(Card card) method and checkCardValidation(Card card) like this :

//create an instance of stripe
Stripe stripe = new Stripe();

// chick if card is valid
boolean isValid = stripe.checkCardValidation(card);

// pay using the card provided
String result = stripe.pay(card);