1 files changed, 46 insertions, 0 deletions
diff --git a/lib/PublicInbox/Inbox.pm b/lib/PublicInbox/Inbox.pm
index 922ca9bb..414973c6 100644
--- a/lib/PublicInbox/Inbox.pm
+++ b/lib/PublicInbox/Inbox.pm
@@ -147,6 +147,52 @@ sub base_url {
          }
  }
  
+sub nntp_url {
+        my ($self) = @_;
+        $self->{-nntp_url} ||= do {
+                # no checking for nntp_usable here, we can point entirely
+                # to non-local servers or users run by a different user
+                my $ns = $self->{-pi_config}->{'publicinbox.nntpserver'};
+                my $group = $self->{newsgroup};
+                my @urls;
+                if ($ns && $group) {
+                        $ns = [ $ns ] if ref($ns) ne 'ARRAY';
+                        @urls = map {
+                                my $u = m!\Anntps?://! ? $_ : "nntp://$_";
+                                $u .= '/' if $u !~ m!/\z!;
+                                $u.$group;
+                        } @$ns;
+                }
+
+                my $mirrors = $self->{nntpmirror};
+                if ($mirrors) {
+                        my @m;
+                        foreach (@$mirrors) {
+                                my $u = m!\Anntps?://! ? $_ : "nntp://$_";
+                                if ($u =~ m!\Anntps?://[^/]+/?\z!) {
+                                        if ($group) {
+                                                $u .= '/' if $u !~ m!/\z!;
+                                                $u .= $group;
+                                        } else {
+                                                warn
+"publicinbox.$self->{name}.nntpmirror=$_ missing newsgroup name\n";
+                                        }
+                                }
+                                # else: allow full URLs like:
+                                # nntp://news.example.com/alt.example
+                                push @m, $u;
+                        }
+                        my %seen = map { $_ => 1 } @urls;
+                        foreach my $u (@m) {
+                                next if $seen{$u};
+                                $seen{$u} = 1;
+                                push @urls, $u;
+                        }
+                }
+                \@urls;
+        };
+}
+
  sub nntp_usable {
          my ($self) = @_;
          my $ret = $self->mm && $self->search;