Added error handling, send email to user if adding fails

webapp/utils.py

@@ -125,7 +125,7 @@ def admin_send_email_signupees(list, subject, content):
         send_email(to.email, subject, markdown.markdown(content), True)
 
 
-def add_to_mailinglist(email):
+def add_to_mailinglist(email: str):
     try:
         # get data
         SCOPES = ["https://www.googleapis.com/auth/admin.directory.group"]
@@ -140,6 +140,16 @@ def add_to_mailinglist(email):
         service = build("admin", "directory_v1", credentials=credentials)
         service.members().insert(groupKey=GROUP_KEY, body={"email": email}).execute()
     except HttpError as err:
-        logging.exception("Something fukd: {}".format(err.error_details))
-        return err.error_details.message
+        # Already in list, do nothing
+        if err.status_code == 409:
+            pass
+        # Something went wrong, send notification to maintainer.
+        else:
+            logging.exception("Failed adding user to list")
+
+            to = "ilari.ojakorpi@sahkoinsinoorikilta.fi"
+            subject = "Web error: Failed adding to google groups"
+            body = "Error code: {}\nError details: {}\nEmail that was not added: {}\n\nAdd user manually to jäsenet groups.".format(err.status_code, err.error_details, email)
+
+            send_email(to, subject, body)