Shopify Script - New customers get $X discount

customer = Input.cart.customer
discount = 0
message = ""
if customer
  if customer.orders_count < 1
    discount = 1000 #discount amount in cents
    message = "New Customer - $10 off"
  end
end
puts discount
Input.cart.line_items.each do |line_item|
  product = line_item.variant.product
  next if product.gift_card?
  line_item.change_line_price(line_item.line_price - Money.new(cents: discount), message: message) unless discount == 0
end

Output.cart = Input.cart