fix: sometimes most recent contacts list wasn't used

`ndb::poll_for_notes` appears to give notes as they arrive. We
need to make sure we only use the most recent for contacts

Signed-off-by: kernelkind <kernelkind@gmail.com>

crates/notedeck/src/account/contacts.rs

@@ -13,6 +13,7 @@ pub enum ContactState {
     Received {
         contacts: HashSet<Pubkey>,
         note_key: NoteKey,
+        timestamp: u64,
     },
 }
 
@@ -55,6 +56,7 @@ impl Contacts {
             ContactState::Received {
                 contacts,
                 note_key: _,
+                timestamp: _,
             } => {
                 if contacts.contains(other_pubkey) {
                     IsFollowing::Yes
@@ -80,6 +82,18 @@ impl Contacts {
             }
         };
 
+        if let ContactState::Received {
+            contacts: _,
+            note_key: _,
+            timestamp,
+        } = self.get_state()
+        {
+            if *timestamp > note.created_at() {
+                // the current contact list is more up to date than the one we just received. ignore it.
+                return;
+            }
+        }
+
         update_state(&mut self.state, &note, *key);
     }
 
@@ -94,11 +108,17 @@ fn update_state(state: &mut ContactState, note: &Note, key: NoteKey) {
             *state = ContactState::Received {
                 contacts: get_contacts_owned(note),
                 note_key: key,
+                timestamp: note.created_at(),
             };
         }
-        ContactState::Received { contacts, note_key } => {
+        ContactState::Received {
+            contacts,
+            note_key,
+            timestamp,
+        } => {
             update_contacts(contacts, note);
             *note_key = key;
+            *timestamp = note.created_at();
         }
     };
 }

crates/notedeck_columns/src/profile.rs

@@ -144,6 +144,7 @@ fn send_kind_3_event(ndb: &Ndb, pool: &mut RelayPool, accounts: &Accounts, actio
     let ContactState::Received {
         contacts: _,
         note_key,
+        timestamp: _,
     } = accounts.get_selected_account().data.contacts.get_state()
     else {
         return;

crates/notedeck_columns/src/timeline/mod.rs

@@ -601,6 +601,7 @@ pub fn fetch_contact_list(
         ContactState::Received {
             contacts: _,
             note_key: _,
+            timestamp: _,
         } => FilterState::GotRemote(filter::GotRemoteType::Contact),
     };
 
@@ -718,6 +719,7 @@ pub fn is_timeline_ready(
             let ContactState::Received {
                 contacts: _,
                 note_key,
+                timestamp: _,
             } = accounts.get_selected_account().data.contacts.get_state()
             else {
                 return false;