added endpoint to receive payment data and update it

app/controllers/eis_billing/payment_status_controller.rb

@@ -0,0 +1,52 @@
+module EisBilling
+  class PaymentStatusController < ApplicationController
+    skip_authorization_check # Temporary solution
+    skip_before_action :verify_authenticity_token # Temporary solution
+
+    TYPE = "PaymentOrders::EveryPay".freeze
+
+    def update
+      invoice_number = params[:order_reference]
+      paid_at = params[:transaction_time]
+      sum = params[:standing_amount]
+      everypay_response = params
+      payment_status = nil
+
+      if PaymentOrders::EveryPay::SUCCESSFUL_PAYMENT.include? params[:payment_state]
+        payment_status = :paid
+      elsif params[:payment_state] == 'failed'
+        payment_status = :failed
+      end
+
+      invoice = Invoice.find_by(number: invoice_number)
+
+      bank = BankTransaction.new
+      bank.description = invoice.order
+      bank.reference_no = invoice.reference_no
+      bank.currency = invoice.currency
+      bank.iban = invoice.seller_iban
+      bank.sum = sum
+      bank.paid_at = paid_at
+      bank.buyer_name = invoice.buyer_name
+      bank.save
+
+      p "++++ BANK TRANSACTION ERRORS ? ++++"
+      p bank.errors
+
+      payment = PaymentOrder.new
+      payment.type = TYPE
+      payment.invoice = invoice
+      payment.response = everypay_response
+      payment.status = payment_status
+      payment.save
+
+      p "++++ PAYMENT ORDER ERRORS ? ++++"
+      p bank.errors
+
+      registrar = Registrar.find_by(reference_no: params[:reference_number])
+      bank.create_activity(registrar, invoice)
+
+      render status: 200, json: { status: 'ok' }
+    end
+  end
+end