www: add topics_(new|active).(html|atom) endpoints

This seems like a easy (but WWW-specific) way to get recently
created and recently active topics as suggested by Konstantin.

To do this with Xapian will require a new columns and
reindexing; and I'm not sure if the current lei handling of
search results by dumping results to a format readable by common
MUAs would work well with this.  A new TUI may be required...

Suggested-by: Konstantin Ryabitsev <konstantin@linuxfoundation.org>
Link: https://public-inbox.org/meta/20231107-skilled-cobra-of-swiftness-a6ff26@meerkat/

1 files changed, 13 insertions, 2 deletions

diff --git a/lib/PublicInbox/WWW.pm b/lib/PublicInbox/WWW.pm
index d2bd68ea..6b616bd4 100644
--- a/lib/PublicInbox/WWW.pm
+++ b/lib/PublicInbox/WWW.pm
@@ -101,6 +101,9 @@ sub call {
                 invalid_inbox($ctx, $1) || get_atom($ctx);
         } elsif ($path_info =~ m!$INBOX_RE/new\.html\z!o) {
                 invalid_inbox($ctx, $1) || get_new($ctx);
+        } elsif ($path_info =~
+                        m!$INBOX_RE/topics_(new|active)\.(atom|html)\z!o) {
+                get_topics($ctx, $1, $2, $3);
         } elsif ($path_info =~ m!$INBOX_RE/description\z!o) {
                 get_description($ctx, $1);
         } elsif ($path_info =~ m!$INBOX_RE/(?:(?:git/)?([0-9]+)(?:\.git)?/)?
@@ -270,6 +273,13 @@ sub get_new {
         PublicInbox::Feed::new_html($ctx);
 }
 
+# /$INBOX/topics_(new|active).(html|atom)
+sub get_topics {
+        my ($ctx, $ibx_name, $category, $type) = @_;
+        require PublicInbox::WwwTopics;
+        PublicInbox::WwwTopics::response($ctx, $ibx_name, $category, $type);
+}
+
 # /$INBOX/?r=$GIT_COMMIT                 -> HTML only
 sub get_index {
         my ($ctx) = @_;
@@ -338,11 +348,12 @@ sub get_altid_dump {
 }
 
 sub need {
-        my ($ctx, $extra) = @_;
+        my ($ctx, $extra, $upref) = @_;
         require PublicInbox::WwwStream;
+        $upref //= '../';
         PublicInbox::WwwStream::html_oneshot($ctx, 501, <<EOF);
 <pre>$extra is not available for this public-inbox
-<a\nhref="../">Return to index</a></pre>
+<a\nhref="$upref">Return to index</a></pre>
 EOF
 }