Display line items in confirmation email with fees included in item totals

app/models/spree/line_item_decorator.rb

@@ -22,4 +22,14 @@ Spree::LineItem.class_eval do
     joins(:product).
     where('spree_products.supplier_id IN (?)', enterprises)
   }
+
+  def amount_with_adjustments
+    # EnterpriseFee#create_locked_adjustment applies adjustments on line items to their parent order,
+    # so line_item.adjustments returns an empty array
+    amount + Spree::Adjustment.where(source_id: id).sum(&:amount)
+  end
+
+  def display_amount_with_adjustments
+    Spree::Money.new(amount_with_adjustments, { :currency => currency })
+  end
 end

app/views/spree/order_mailer/confirm_email_for_customer.html.haml

@@ -10,7 +10,7 @@
             %p
               Thanks for shopping on
               %strong= "#{Spree::Config.site_name}."
-              Here are your order details from
+              Here are the details for you order from
               %strong= "#{@order.distributor.name}."
       %table.column{:align => "left"}
         %tr
@@ -39,7 +39,8 @@
       %td{:align => "right"}
         = item.quantity
       %td{:align => "right"}
-        = item.display_amount
+        = item.display_amount_with_adjustments
+
   %tr
     %td{:colspan => "3"}  
   %tr