return the process instance when interstitial process is complete and… (#421)

* return the process instance when interstitial process is complete and favor redirecting to it on the frontend

* upgrade certifi for snyk check

---------

Co-authored-by: jasquat <jasquat@users.noreply.github.com>

spiffworkflow-backend/poetry.lock

@@ -183,13 +183,13 @@ files = [
 
 [[package]]
 name = "certifi"
-version = "2022.12.7"
+version = "2023.7.22"
 description = "Python package for providing Mozilla's CA Bundle."
 optional = false
 python-versions = ">=3.6"
 files = [
-    {file = "certifi-2022.12.7-py3-none-any.whl", hash = "sha256:4ad3232f5e926d6718ec31cfc1fcadfde020920e278684144551c91769c7bc18"},
-    {file = "certifi-2022.12.7.tar.gz", hash = "sha256:35824b4c3a97115964b408844d64aa14db1cc518f6562e8d7261699d1350a9e3"},
+    {file = "certifi-2023.7.22-py3-none-any.whl", hash = "sha256:92d6037539857d8206b8f6ae472e8b77db8058fec5937a1ef3f54304089edbb9"},
+    {file = "certifi-2023.7.22.tar.gz", hash = "sha256:539cc1d13202e33ca466e88b2807e29f4c13049d6d87031a3c110744495cb082"},
 ]
 
 [[package]]

spiffworkflow-backend/src/spiffworkflow_backend/routes/tasks_controller.py

@@ -490,6 +490,7 @@ def _interstitial_stream(
                         return
                 # return if process instance is now complete and let the frontend redirect to show page
                 if process_instance.status not in ProcessInstanceModel.active_statuses():
+                    yield _render_data("unrunnable_instance", process_instance)
                     return
 
         # path used by the interstitial page while executing tasks - ie the background processor is not executing them

spiffworkflow-frontend/src/components/ProcessInterstitial.tsx

@@ -227,7 +227,12 @@ export default function ProcessInterstitial({
   /** In the event there is no task information and the connection closed,
    * redirect to the home page. */
   if (state === 'CLOSED' && lastTask === null && allowRedirect) {
-    navigate(`/tasks`);
+    // Favor redirecting to the process instance show page
+    if (processInstance) {
+      navigate(processInstanceShowPageUrl);
+    } else {
+      navigate(`/tasks`);
+    }
   }
 
   let displayableData = data;