web: improve keep unread logic in catchup, remove execess logging

web/src/state.rs

@@ -72,10 +72,6 @@ fn on_url_changed(old: &Url, mut new: Url) -> Msg {
     if did_change {
         messages.push(Msg::ScrollToTop)
     }
-    info!(
-        "url changed\nold '{old}'\nnew '{new}', history {}",
-        history().length().unwrap_or(0)
-    );
     let hpp = new.remaining_hash_path_parts();
     let msg = match hpp.as_slice() {
         ["t", tid] => Msg::ShowThreadRequest {
@@ -553,7 +549,6 @@ pub fn update(msg: Msg, model: &mut Model, orders: &mut impl Orders<Msg>) {
             });
         }
         Msg::ScrollToTop => {
-            info!("scrolling to the top");
             web_sys::window().unwrap().scroll_to_with_x_and_y(0., 0.);
         }
         Msg::WindowScrolled => {
@@ -619,6 +614,36 @@ pub fn update(msg: Msg, model: &mut Model, orders: &mut impl Orders<Msg>) {
             orders.send_msg(Msg::CatchupRequest { query });
         }
         Msg::CatchupKeepUnread => {
+            if let Some(thread_id) = current_thread_id(&model.context) {
+                if let Context::ThreadResult {
+                    thread:
+                        ShowThreadQueryThread::EmailThread(ShowThreadQueryThreadOnEmailThread {
+                            messages,
+                            ..
+                        }),
+                    ..
+                } = &model.context
+                {
+                    //orders.send_msg(Msg::SetUnread(thread_id, false));
+                    let unread_messages: Vec<_> = messages
+                        .iter()
+                        .filter(|msg| msg.tags.iter().any(|t| t == "unread"))
+                        .map(|msg| &msg.id)
+                        .collect();
+                    if unread_messages.is_empty() {
+                        // All messages are read, so mark them all unread
+                        orders.send_msg(Msg::SetUnread(thread_id, true));
+                    } else {
+                        // Do nothing if there are some messages unread
+                    }
+                } else {
+                    // News post, not email, just mark unread
+                    orders.send_msg(Msg::SetUnread(thread_id, true));
+                };
+            } else {
+                // This shouldn't happen
+                warn!("no current thread_id");
+            }
             orders.send_msg(Msg::CatchupNext);
         }
         Msg::CatchupMarkAsRead => {