my ($r) = @_;
return $r if ref $r ne 'Plack::App::Gruntmaster::Response';
my @hdrs = ('X-Forever' => 1, 'Cache-Control' => "$privacy, max-age=$r->{maxage}");
+ push @hdrs, Vary => 'Authorization' if $privacy eq 'private';
return [200, ['Content-Type' => 'application/json', @hdrs], [encode_json $r->{params}]] if $format eq 'json';
my $ret = render $r->{template}, 'en', title => $r->{title}, %{$r->{params}};
[200, ['Content-Type' => 'text/html', @hdrs], [encode 'UTF-8', $ret]]