qr pay updates

- subscribe to action cable from cloud and listen
- callback from cloud to local and show success payment in real time
- payment service and process payment after callback

app/services/qr_payment_service.rb

@@ -0,0 +1,61 @@
+class QrPaymentService
+  attr_reader :sale_id, :current_login_employee, :sale, :booking, :processed_sale_payment
+
+  def initialize(sale_id, current_login_employee)
+    @sale_id = sale_id
+    @current_login_employee = current_login_employee
+  end
+
+  def process
+    return { status: false, message: "Sale ID is required." } unless sale_id.present?
+
+    SalePayment.transaction do
+      find_sale_and_booking
+      return { status: false, message: "There is no sale for '#{sale_id}'!" } unless sale
+      return { status: false, message: "Already paid for '#{sale_id}'!" } unless sale.sale_status == "new"
+
+      status, payment_attempt = process_the_payment
+      unless status
+        error_message = payment_attempt&.errors&.full_messages&.join(', ') || "Payment processing failed."
+        return { status: false, message: error_message }
+      end
+
+
+      process_orders_and_broadcast
+      return { status: true, message: "Payment successful." }
+    end
+  rescue ActiveRecord::RecordNotFound
+    { status: false, message: "Sale not found for ID '#{sale_id}'." }
+  rescue StandardError => e
+    Rails.logger.error "QrPaymentService Error: #{e.message}\n#{e.backtrace.join("\n")}"
+    { status: false, message: "An unexpected error occurred: #{e.message}" }
+  end
+
+  private
+
+  def find_sale_and_booking
+    @sale = Sale.find_by_sale_id(sale_id) # Consider find_by_sale_id! if you want RecordNotFound earlier
+    @booking = @sale&.booking
+  end
+
+  def process_the_payment
+    sale_payment_creator = SalePayment.new
+    status, payment = sale_payment_creator.process_payment(
+      sale,
+      current_login_employee,
+      sale.grand_total,
+      "MMQR"
+    )
+    [status, payment]
+  end
+
+  def process_orders_and_broadcast
+    booking.orders.each do |order|
+      oqs = OrderQueueStation.new
+      oqs.pay_process_order_queue(order.order_id, booking.dining_facility_id)
+
+      assign_order = AssignedOrderItem.assigned_order_item_by_job(order.order_id)
+      ActionCable.server.broadcast "order_queue_station_channel", order: assign_order
+    end
+  end
+end