Enable credit card xendit

Signed-off-by: Imre Nagi <[email protected]>

README.md

@@ -91,7 +91,7 @@ This tables shows which payment channels that has been implemented by this proxy
 
 | Channels                        | Midtrans                            | Xendit                   |
 | ------------------------------- | ----------------------------------- | ------------------------ |
-| Credit Card without installment | :white_check_mark:                  | :heavy_exclamation_mark: |
+| Credit Card without installment | :white_check_mark:                  | :white_check_mark:       |
 | Credit Card with installment    | :white_check_mark:                  | :x:                      |
 | BCA VA                          | :white_check_mark:                  | :white_check_mark:       |
 | Mandiri VA                      | :white_check_mark:                  | :white_check_mark:       |

gateway/xendit/credit_card.go

@@ -0,0 +1,24 @@
+package xendit
+
+import (
+	xinvoice "github.com/xendit/xendit-go/invoice"
+)
+
+func NewCreditCardInvoice(rb *InvoiceRequestBuilder) (*CreditCardInvoice, error) {
+	return &CreditCardInvoice{
+		rb: rb,
+	}, nil
+}
+
+type CreditCardInvoice struct {
+	rb *InvoiceRequestBuilder
+}
+
+func (o *CreditCardInvoice) Build() (*xinvoice.CreateParams, error) {
+	o.rb.AddPaymentMethod("CREDIT_CARD")
+	req, err := o.rb.Build()
+	if err != nil {
+		return nil, err
+	}
+	return req, nil
+}

gateway/xendit/facade.go

@@ -51,6 +51,8 @@ func NewInvoiceRequestFromInvoice(inv *invoice.Invoice) (*xinvoice.CreateParams,
 		reqBuilder, err = NewPermataVAInvoice(req)
 	case payment.SourceMandiriVA:
 		reqBuilder, err = NewMandiriVAInvoice(req)
+	case payment.SourceCreditCard:
+		reqBuilder, err = NewCreditCardInvoice(req)
 	}
 	if err != nil {
 		return nil, err