From 98ff501233ee371c98519bf96394ef8085c3b076 Mon Sep 17 00:00:00 2001
From: Eric Wong <e@80x24.org>
Date: Fri, 27 Nov 2020 09:52:43 +0000
Subject: nntp: use Inbox->uidvalidity instead of ->mm->created_at

This is memoized, and may allow us some future flexibility w.r.t
PublicInbox::Inbox-like objects.  While we're at it, use
defined-or ("//") in case somebody really set a public-inbox
creation time to the Unix epoch.
---
 lib/PublicInbox/NNTP.pm | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/PublicInbox/NNTP.pm b/lib/PublicInbox/NNTP.pm
index 2f821fa6..2197d758 100644
--- a/lib/PublicInbox/NNTP.pm
+++ b/lib/PublicInbox/NNTP.pm
@@ -147,7 +147,7 @@ sub list_active_times ($;$) {
 	wildmat2re($wildmat);
 	foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
 		$ng->{newsgroup} =~ $wildmat or next;
-		my $c = eval { $ng->mm->created_at } || time;
+		my $c = eval { $ng->uidvalidity } // time;
 		more($self, "$ng->{newsgroup} $c $ng->{-primary_address}");
 	}
 }
@@ -255,7 +255,7 @@ sub cmd_newgroups ($$$;$$) {
 	# TODO dists
 	more($self, '231 list of new newsgroups follows');
 	foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
-		my $c = eval { $ng->mm->created_at } || 0;
+		my $c = eval { $ng->uidvalidity } // 0;
 		next unless $c > $ts;
 		group_line($self, $ng);
 	}
-- 
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