From 06b9df10ee77b061fbde53d54acab77dab953f90 Mon Sep 17 00:00:00 2001
From: Robert Sparks <rjsparks@nostrum.com>
Date: Mon, 23 Sep 2024 10:09:50 -0500
Subject: [PATCH] feat: warn about materials for cancelled sessions (#7959)

* feat: warn about materials for cancelled sessions

* fix: handle viewing a DocHistory material object
---
 ietf/doc/tests.py                         | 11 +++++++++++
 ietf/doc/views_doc.py                     |  8 ++++++++
 ietf/templates/doc/document_material.html |  3 +++
 3 files changed, 22 insertions(+)

diff --git a/ietf/doc/tests.py b/ietf/doc/tests.py
index 5e5b741fe5..f5f715162d 100644
--- a/ietf/doc/tests.py
+++ b/ietf/doc/tests.py
@@ -1683,6 +1683,17 @@ def test_document_material(self):
 
         r = self.client.get(urlreverse("ietf.doc.views_doc.document_main", kwargs=dict(name=doc.name)))
         self.assertEqual(r.status_code, 200)
+        self.assertNotContains(r, "The session for this document was cancelled.")
+
+        SchedulingEvent.objects.create(
+            session=session,
+            status_id='canceled',
+            by = Person.objects.get(user__username="marschairman"), 
+        )
+
+        r = self.client.get(urlreverse("ietf.doc.views_doc.document_main", kwargs=dict(name=doc.name)))
+        self.assertEqual(r.status_code, 200)
+        self.assertContains(r, "The session for this document was cancelled.")
 
     def test_document_ballot(self):
         doc = IndividualDraftFactory()
diff --git a/ietf/doc/views_doc.py b/ietf/doc/views_doc.py
index d12dd04181..aad45920c6 100644
--- a/ietf/doc/views_doc.py
+++ b/ietf/doc/views_doc.py
@@ -870,6 +870,13 @@ def document_main(request, name, rev=None, document_html=False):
                     and doc.group.features.has_nonsession_materials
                     and doc.type_id in doc.group.features.material_types
             )
+
+        session_statusid = None
+        actual_doc = doc if isinstance(doc,Document) else doc.doc
+        if actual_doc.session_set.count() == 1:
+            if actual_doc.session_set.get().schedulingevent_set.exists():
+                session_statusid = actual_doc.session_set.get().schedulingevent_set.order_by("-time").first().status_id
+
         return render(request, "doc/document_material.html",
                                   dict(doc=doc,
                                        top=top,
@@ -882,6 +889,7 @@ def document_main(request, name, rev=None, document_html=False):
                                        can_upload = can_upload,
                                        other_types=other_types,
                                        presentations=presentations,
+                                       session_statusid=session_statusid,
                                        ))
 
 
diff --git a/ietf/templates/doc/document_material.html b/ietf/templates/doc/document_material.html
index 7537082df9..cf6dd1ab64 100644
--- a/ietf/templates/doc/document_material.html
+++ b/ietf/templates/doc/document_material.html
@@ -153,6 +153,9 @@
             </a>
         {% endif %}
     </p>
+    {% if session_statusid == "canceled" %}
+       <div class="alert alert-warning">The session for this document was cancelled.</div>
+    {% endif %}
     <div id="materials-content" class="card mt-5">
         <div class="card-header">{{ doc.name }}-{{ doc.rev }}</div>
         <div class="card-body{% if content_is_html %} text-break{% endif %}">