From 6738c68324f58eef2b03bddbcf32411866625b6d Mon Sep 17 00:00:00 2001
From: Harald Welte <laforge@gnumonks.org>
Date: Tue, 10 Jan 2017 15:26:50 +0100
Subject: [PATCH] raise a Warning if funds in wallet are insufficient for label

---
 models/dp_delivery_carrier.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/models/dp_delivery_carrier.py b/models/dp_delivery_carrier.py
index dc1b719..31a0db8 100644
--- a/models/dp_delivery_carrier.py
+++ b/models/dp_delivery_carrier.py
@@ -123,6 +123,8 @@ class DPDeliveryCarrier(models.Model):
         im.clear_positions()
         position = im.build_position(service.code, im_sender, im_recipient)
         im.add_position(position)
+        if im.wallet_balance < im.compute_total():
+            raise Warning("Wallet balance %f is less than label cost %f!" % (im.wallet_balance/100, im.compute_total()/100)
         r = im.checkoutPNG()
         voucher = r.shoppingCart.voucherList.voucher[0]
         filename = 'DP'+voucher.voucherId+'.png'