Refunds for authorize.net transactions.

r2/r2/lib/authorize/api.py

@@ -25,6 +25,9 @@ For talking to authorize.net credit card payments via their XML api.
 
 This file consists mostly of wrapper classes for dealing with their
 API, while the actual useful functions live in interaction.py
+
+NOTE: This is using the Customer Information Manager (CIM) API
+http://developer.authorize.net/api/cim/
 """
 
 import re

r2/r2/lib/authorize/interaction.py

@@ -38,6 +38,7 @@ from r2.lib.authorize.api import (
     Order,
     ProfileTransAuthOnly,
     ProfileTransPriorAuthCapture,
+    ProfileTransRefund,
     ProfileTransVoid,
     UpdateCustomerPaymentProfileRequest,
 )
@@ -205,3 +206,22 @@ def charge_transaction(user, trans_id, campaign, test=None):
 
     # already charged
     return True
+
+
+@export
+def refund_transaction(user, trans_id, campaign_id, amount, test=None):
+    # refund will only work if charge has settled
+    bid =  Bid.one(transaction=trans_id, campaign=campaign_id)
+    if trans_id < 0:
+        bid.refund(amount)
+        return True
+    else:
+        success, res = _make_transaction(ProfileTransRefund, amount, user,
+                                         bid.pay_id, trans_id=trans_id,
+                                         test=test)
+        if success:
+            bid.refund(amount)
+        elif success == False:
+            msg = "Refund failed, response: %r" % res
+            raise AuthorizeNetException(msg)
+        return True

r2/r2/lib/promote.py

@@ -209,7 +209,7 @@ class RenderableCampaign():
                 if transaction.is_void():
                     status['paid'] = False
                     status['free'] = False
-                elif transaction.is_charged():
+                elif transaction.is_charged() or transaction.is_refund():
                     status['complete'] = True
 
             rc = cls(campaign_id36, start_date, end_date, duration, bid, sr,

r2/r2/models/bidding.py

@@ -344,8 +344,15 @@ class Bid(Sessionized, Base):
         """
         return (self.status == self.STATUS.CHARGE)
 
-    def refund(self):
+    def refund(self, amount):
+        current_charge = self.charge or self.bid    # needed if charged() not
+                                                    # setting charge attr
+        self.charge = current_charge - amount
         self.set_status(self.STATUS.REFUND)
+        self._commit()
+
+    def is_refund(self):
+        return (self.status == self.STATUS.REFUND)
 
 
 class PromotionWeights(Sessionized, Base):