feat(settings): allow sorting thread replies newest first

crates/notedeck_columns/src/ui/thread.rs

@@ -115,7 +115,10 @@ impl<'a, 'd> ThreadView<'a, 'd> {
             .unwrap()
             .list;
 
-        let notes = note_builder.into_notes(&mut self.threads.seen_flags);
+        let notes = note_builder.into_notes(
+            self.note_options.contains(NoteOptions::RepliesNewestFirst),
+            &mut self.threads.seen_flags,
+        );
 
         if !full_chain {
             // TODO(kernelkind): insert UI denoting we don't have the full chain yet
@@ -223,7 +226,11 @@ impl<'a> ThreadNoteBuilder<'a> {
         self.replies.push(note);
     }
 
-    pub fn into_notes(mut self, seen_flags: &mut NoteSeenFlags) -> ThreadNotes<'a> {
+    pub fn into_notes(
+        mut self,
+        replies_newer_first: bool,
+        seen_flags: &mut NoteSeenFlags,
+    ) -> ThreadNotes<'a> {
         let mut notes = Vec::new();
 
         let selected_is_root = self.chain.is_empty();
@@ -246,6 +253,11 @@ impl<'a> ThreadNoteBuilder<'a> {
             unread_and_have_replies: false,
         });
 
+        if replies_newer_first {
+            self.replies
+                .sort_by(|a, b| b.created_at().cmp(&a.created_at()));
+        }
+
         for reply in self.replies {
             notes.push(ThreadNote {
                 unread_and_have_replies: *seen_flags.get(reply.id()).unwrap_or(&false),