retreive the formToken from PZ API

app/controllers/api/payzen_controller.rb

@@ -3,6 +3,7 @@
 # API Controller for accessing PayZen API endpoints through the front-end app
 class API::PayzenController < API::PaymentsController
   require 'pay_zen/charge'
+  require 'pay_zen/helper'
 
   def sdk_test
     str = 'fab-manager'
@@ -17,8 +18,12 @@ class API::PayzenController < API::PaymentsController
 
   def create_payment
     amount = card_amount
+    @id = PayZen::Helper.generate_ref(cart_items_params, params[:customer])
 
     client = PayZen::Charge.new
-    @result = client.create_payment(amount: amount, customer: { reference: params[:customer][:id], email: params[:customer][:email] })
+    @result = client.create_payment(amount: amount[:amount],
+                                    order_id: @id,
+                                    customer: { reference: params[:customer][:id], email: params[:customer][:email] })
+    @result
   end
 end

app/frontend/src/javascript/components/payment/payzen/payzen-form.tsx

@@ -50,8 +50,8 @@ export const PayzenForm: React.FC<PayzenFormProps> = ({ onSubmit, onSuccess, onE
   });
 
   const submitEmbeddedPayzenForm = (): void => {
-    // FIXME: not working...
     const button: HTMLButtonElement = document.querySelector('button.kr-payment-button');
+    button.setAttribute('type', 'button');
     button.click()
   }
 

app/frontend/src/javascript/models/payzen.ts

@@ -4,4 +4,5 @@ export interface SdkTestResponse {
 
 export interface CreatePaymentResponse {
   formToken: string
+  orderId: string
 }

app/views/api/payzen/create_payment.json.jbuilder

@@ -1,3 +1,4 @@
 # frozen_string_literal: true
 
-json.formToken @result['answer']
+json.formToken @result['answer']['formToken']
+json.orderId @id

lib/pay_zen/helper.rb

@@ -16,5 +16,12 @@ class PayZen::Helper
       end
       res
     end
+
+    def generate_ref(cart_items, customer)
+      require 'sha3'
+
+      content = { cart_items: cart_items, customer: customer }.to_json + DateTime.current.to_s
+      SHA3::Digest.hexdigest(:sha256, content)
+    end
   end
 end