```ruby
class APNS::DeliverNotification
  include Interactor

  before do
    require_arguments!(:endpoint_arn, :notification)
  end

  def call
    SnsService.deliver_notification(
      context[:endpoint_arn], {
      platform_key => { aps: aps_options }.merge(context[:notification].metadata).to_json
    })
    ApnsDeliveryMetric.track_delivery_success
  rescue SnsService::ServiceError => e
    ApnsDeliveryMetric.track_delivery_failure
    context.fail!(message: e.message)
  end

  private

  def require_arguments!(*args)
    args.each do |argument|
      context.fail!(message: "Missing required argument: #{argument}") if context[argument].nil?
    end
  end

  def aps_options
    { badge: context[:notification].badge_count }.tap do |opts|
      opts[:alert] = {
        title: context[:notification].title,
        body: context[:notification].body
      } if context[:notification].include_alert?
    end
  end

  def platform_key
    use_sandbox? ? 'APNS_SANDBOX' : 'APNS'
  end

  def use_sandbox?
    !!context[:endpoint_arn].match(/_SANDBOX/)
  end

end
```

Add debug logging for deliveries
user
```ruby
class APNS::DeliverNotification
  include Interactor

  before do
    require_arguments!(:endpoint_arn, :notification)
  end

  def call
    Rails.logger.debug "Delivering notification: #{context[:notification]}"
    SnsService.deliver_notification(
      context[:endpoint_arn], {
      platform_key => { aps: aps_options }.merge(context[:notification].metadata).to_json
    })
    ApnsDeliveryMetric.track_delivery_success
  rescue SnsService::ServiceError => e
    ApnsDeliveryMetric.track_delivery_failure
    context.fail!(message: e.message)
  end

  private

  def require_arguments!(*args)
    args.each do |argument|
      context.fail!(message: "Missing required argument: #{argument}") if context[argument].nil?
    end
  end

  def aps_options
    { badge: context[:notification].badge_count }.tap do |opts|
      opts[:alert] = {
        title: context[:notification].title,
        body: context[:notification].body
      } if context[:notification].include_alert?
    end
  end

  def platform_key
    use_sandbox? ? 'APNS_SANDBOX' : 'APNS'
  end

  def use_sandbox?
    !!context[:endpoint_arn].match(/_SANDBOX/)
  end

end
```
assistant