finished ##201

api that user can storno transaction

geruecht/user/routes.py

@@ -234,3 +234,30 @@ def _deleteTransactJob(**kwargs):
             return jsonify({"ok": "ok"})
     except Exception as err:
         return jsonify({"error": str(err)}), 409
+
+@user.route("/user/storno", methods=['POST'])
+@login_required(groups=[USER])
+def _storno(**kwargs):
+    """ Function for Baruser to storno amount
+
+            This function added to the user with the posted userID the posted amount.
+
+            Returns:
+                JSON-File with userID and the amount
+                or ERROR 401 Permission Denied
+        """
+    try:
+        if 'accToken' in kwargs:
+            accToken = kwargs['accToken']
+            user = accToken.user
+            data = request.get_json()
+            amount = int(data['amount'])
+
+            date = datetime.now()
+            userController.addCredit(user.uid, amount, year=date.year, month=date.month)
+            accToken.user = userController.getUser(accToken.user.uid)
+            retVal = accToken.user.toJSON()
+            retVal['creditList'] = {credit.year: credit.toJSON() for credit in accToken.user.geruechte}
+            return jsonify(retVal)
+    except Exception as err:
+        return jsonify({"error": str(err)}), 409