fix: Hide last modified field in agenda when unavailable (#7722)

* test: Update tests to check for Updated field in agenda.txt

* fix: Hide Updated in agenda.txt if too old

* test: Remove confusing tests on CSV agenda

* refactor: Make updated() return None when no valid timestamp found

* refactor: Remove walrus operator

client/agenda/Agenda.vue

@@ -323,7 +323,7 @@ const meetingUpdated = computed(() => {
   if (!agendaStore.meeting.updated) { return false }
   
   const updatedDatetime = DateTime.fromISO(agendaStore.meeting.updated).setZone(agendaStore.timezone)
-  if (!updatedDatetime.isValid || updatedDatetime < DateTime.fromISO('1980-01-01')) {
+  if (!updatedDatetime.isValid) {
     return false
   }
   

ietf/meeting/models.py

@@ -369,13 +369,14 @@ def vtimezone(self):
 
     def updated(self):
         # should be Meeting.modified, but we don't have that
-        min_time = pytz.utc.localize(datetime.datetime(1970, 1, 1, 0, 0, 0))
-        timeslots_updated = self.timeslot_set.aggregate(Max('modified'))["modified__max"] or min_time
-        sessions_updated = self.session_set.aggregate(Max('modified'))["modified__max"] or min_time
-        assignments_updated = min_time
+        timeslots_updated = self.timeslot_set.aggregate(Max('modified'))["modified__max"]
+        sessions_updated = self.session_set.aggregate(Max('modified'))["modified__max"]
+        assignments_updated = None
         if self.schedule:
-            assignments_updated = SchedTimeSessAssignment.objects.filter(schedule__in=[self.schedule, self.schedule.base if self.schedule else None]).aggregate(Max('modified'))["modified__max"] or min_time
-        return max(timeslots_updated, sessions_updated, assignments_updated)
+            assignments_updated = SchedTimeSessAssignment.objects.filter(schedule__in=[self.schedule, self.schedule.base if self.schedule else None]).aggregate(Max('modified'))["modified__max"]
+        dts = [timeslots_updated, sessions_updated, assignments_updated]
+        valid_only = [dt for dt in dts if dt is not None]
+        return max(valid_only) if valid_only else None
 
     @memoize
     def previous_meeting(self):

ietf/meeting/tests_views.py

@@ -294,6 +294,8 @@ def test_meeting_agenda(self):
             (slot.time + slot.duration).astimezone(meeting.tz()).strftime("%H%M"),
         ))
         self.assertContains(r, f"shown in the {meeting.tz()} time zone")
+        updated = meeting.updated().astimezone(meeting.tz()).strftime("%Y-%m-%d %H:%M:%S %Z")
+        self.assertContains(r, f"Updated {updated}")
 
         # text, UTC
         r = self.client.get(urlreverse(
@@ -309,6 +311,16 @@ def test_meeting_agenda(self):
             (slot.time + slot.duration).astimezone(datetime.timezone.utc).strftime("%H%M"),
         ))
         self.assertContains(r, "shown in UTC")
+        updated = meeting.updated().astimezone(datetime.timezone.utc).strftime("%Y-%m-%d %H:%M:%S %Z")
+        self.assertContains(r, f"Updated {updated}")
+
+        # text, invalid updated (none)
+        with patch("ietf.meeting.models.Meeting.updated", return_value=None):
+            r = self.client.get(urlreverse(
+                "ietf.meeting.views.agenda_plain",
+                kwargs=dict(num=meeting.number, ext=".txt", utc="-utc"),
+            ))
+            self.assertNotContains(r, "Updated ")
 
         # future meeting, no agenda
         r = self.client.get(urlreverse("ietf.meeting.views.agenda_plain", kwargs=dict(num=future_meeting.number, ext=".txt")))
@@ -859,6 +871,24 @@ def test_important_dates_ical(self):
         for d in meeting.importantdate_set.all():
             self.assertContains(r, d.date.isoformat())
 
+        updated = meeting.updated()
+        self.assertIsNotNone(updated)
+        expected_updated = updated.astimezone(datetime.timezone.utc).strftime("%Y%m%dT%H%M%SZ")
+        self.assertContains(r, f"DTSTAMP:{expected_updated}")
+        dtstamps_count = r.content.decode("utf-8").count(f"DTSTAMP:{expected_updated}")
+        self.assertEqual(dtstamps_count, meeting.importantdate_set.count())
+
+        # With default cached_updated, 1970-01-01
+        with patch("ietf.meeting.models.Meeting.updated", return_value=None):
+            r = self.client.get(url)
+            for d in meeting.importantdate_set.all():
+                self.assertContains(r, d.date.isoformat())
+
+            expected_updated = "19700101T000000Z"
+            self.assertContains(r, f"DTSTAMP:{expected_updated}")
+            dtstamps_count = r.content.decode("utf-8").count(f"DTSTAMP:{expected_updated}")
+            self.assertEqual(dtstamps_count, meeting.importantdate_set.count())
+
     def test_group_ical(self):
         meeting = make_meeting_test_data()
         s1 = Session.objects.filter(meeting=meeting, group__acronym="mars").first()
@@ -4952,7 +4982,23 @@ def test_upcoming_ical(self):
                                       expected_event_count=len(expected_event_summaries))
         self.assertNotContains(r, 'Remote instructions:')
 
-    def test_upcoming_ical_filter(self):
+        updated = meeting.updated()
+        self.assertIsNotNone(updated)
+        expected_updated = updated.astimezone(datetime.timezone.utc).strftime("%Y%m%dT%H%M%SZ")
+        self.assertContains(r, f"DTSTAMP:{expected_updated}")
+
+        # With default cached_updated, 1970-01-01
+        with patch("ietf.meeting.models.Meeting.updated", return_value=None):
+            r = self.client.get(url)
+            self.assertEqual(r.status_code, 200)
+
+            self.assertEqual(meeting.type_id, "ietf")
+
+            expected_updated = "19700101T000000Z"
+            self.assertEqual(1, r.content.decode("utf-8").count(f"DTSTAMP:{expected_updated}"))
+
+    @patch("ietf.meeting.utils.preprocess_meeting_important_dates")
+    def test_upcoming_ical_filter(self, mock_preprocess_meeting_important_dates):
         # Just a quick check of functionality - details tested by test_js.InterimTests
         make_meeting_test_data(create_interims=True)
         url = urlreverse("ietf.meeting.views.upcoming_ical")
@@ -4974,6 +5020,8 @@ def test_upcoming_ical_filter(self):
                                       ],
                                       expected_event_count=2)
 
+        # Verify preprocess_meeting_important_dates isn't being called
+        mock_preprocess_meeting_important_dates.assert_not_called()
 
     def test_upcoming_json(self):
         make_meeting_test_data(create_interims=True)

ietf/meeting/utils.py

@@ -609,7 +609,8 @@ def bulk_create_timeslots(meeting, times, locations, other_props):
 
 def preprocess_meeting_important_dates(meetings):
     for m in meetings:
-        m.cached_updated = m.updated()
+        # cached_updated must be present, set it to 1970-01-01 if necessary
+        m.cached_updated = m.updated() or pytz.utc.localize(datetime.datetime(1970, 1, 1, 0, 0, 0))
         m.important_dates = m.importantdate_set.prefetch_related("name")
         for d in m.important_dates:
             d.midnight_cutoff = "UTC 23:59" in d.name.name

ietf/templates/meeting/agenda.txt

@@ -7,7 +7,9 @@
 {% filter center:72 %}{{ schedule.meeting.agenda_info_note|striptags|wordwrap:72|safe }}{% endfilter %}
 {% endif %}
 {% filter center:72 %}{{ schedule.meeting.date|date:"F j" }}-{% if schedule.meeting.date.month != schedule.meeting.end_date.month %}{{ schedule.meeting.end_date|date:"F " }}{% endif %}{{ schedule.meeting.end_date|date:"j, Y" }}{% endfilter %}
+{% if updated %}
 {% filter center:72 %}Updated {{ updated|date:"Y-m-d H:i:s T" }}{% endfilter %}
+{% endif %}
 
 {% filter center:72 %}IETF agendas are subject to change, up to and during the meeting.{% endfilter %}
 {% filter center:72 %}Times are shown in {% if display_timezone.lower == "utc" %}UTC{% else %}the {{ display_timezone }} time zone{% endif %}.{% endfilter %}