Error messages.

Giving user friendlier error messages when the tip reserve
was never created, or ran out of money.

1 files changed, 18 insertions, 0 deletions

diff --git a/talermerchantdemos/survey/survey.py b/talermerchantdemos/survey/survey.py
index b25d6e5..57acb1d 100644
--- a/talermerchantdemos/survey/survey.py
+++ b/talermerchantdemos/survey/survey.py
@@ -173,6 +173,24 @@ def handler_405(e):
 
 @app.errorhandler(BackendException)
 def handler_backend_exception(e):
+
+    # The tip reserve was never created
+    if e.backend_json.get("code") == 2753:
+        t = flask.render_template(
+            "survey-error-graceful.html.j2",
+            message="Tip money were never invested, we are sorry!"
+        )
+        return flask.make_response(t, 500)
+
+    # The tip reserve was never created
+    if e.backend_json.get("code") == 2752:
+        t = flask.render_template(
+            "survey-error-graceful.html.j2",
+            message="Tip money got all given, please return later!"
+        )
+        return flask.make_response(t, 500)
+
+
     t = flask.render_template(
         "survey-error.html.j2",
         message=e.args[0],