wip move automatic invoices to plugin

plugins/automatic_invoices/app/overrides/models/concerns/price_calculation_override.rb

@@ -0,0 +1,31 @@
+if FoodsoftAutomaticInvoices.enabled?
+
+  PriceCalculation.class_eval do
+    # deposit is always gross
+    def gross_price
+      add_percent(price, tax) + deposit
+    end
+
+    def gross_price_without_deposit
+      add_percent(price, tax)
+    end
+
+    def net_deposit_price
+      remove_percent(deposit, tax)
+    end
+
+    def fc_price_without_deposit
+      add_percent(gross_price_without_deposit, FoodsoftConfig[:price_markup].to_i)
+    end
+
+    def fc_deposit_price
+      add_percent(deposit, FoodsoftConfig[:price_markup].to_i)
+    end
+
+    private
+
+    def remove_percent(value, percent)
+      (value / ((percent * 0.01) + 1)).round(2)
+    end
+  end
+end