Hide the Favourites feature behind a feature flag

Some issues were encountered with this feature. Disabling it for now.

Once we have the full Damus Labs UI, we will add the feature there.

Changelog-Changed: Placed the Favorites feature behind a feature flag
Closes: https://github.com/damus-io/damus/issues/3304
Signed-off-by: Daniel D’Aquino <daniel@daquino.me>

damus/Features/Profile/Views/ProfileActionSheetView.swift

@@ -150,7 +150,9 @@ struct ProfileActionSheetView: View {
             ScrollView(.horizontal) {
                 HStack(spacing: 20) {
                     followButton
+                    if damus_state.settings.enable_favourites_feature {
                         favoriteButton
+                    }
                     zapButton
                     dmButton
                     if damus_state.keypair.pubkey != profile.pubkey && damus_state.keypair.privkey != nil {

damus/Features/Profile/Views/ProfileView.swift

@@ -270,7 +270,9 @@ struct ProfileView: View {
 
     func actionSection(record: ProfileRecord?, pubkey: Pubkey) -> some View {
         return Group {
+            if damus_state.settings.enable_favourites_feature {
                 FavoriteButtonView(pubkey: profile.pubkey, damus_state: damus_state)
+            }
             if let record,
                let profile = record.profile,
                let lnurl = record.lnurl,

damus/Features/Settings/Models/UserSettingsStore.swift

@@ -253,6 +253,10 @@ class UserSettingsStore: ObservableObject {
     @Setting(key: "enable_experimental_load_new_content_button", default_value: false)
     var enable_experimental_load_new_content_button: Bool
     
+    /// Whether the app should show the Favourites feature (Damus Labs)
+    @Setting(key: "enable_favourites_feature", default_value: false)
+    var enable_favourites_feature: Bool
+    
     @StringSetting(key: "purple_environment", default_value: .production)
     var purple_enviroment: DamusPurpleEnvironment
 

damus/Features/Timeline/Models/HomeModel.swift

@@ -599,6 +599,7 @@ class HomeModel: ContactsDelegate, ObservableObject {
         }
 
         // Add filter for favorited users who we dont follow
+        if damus_state.settings.enable_favourites_feature {
             let all_favorites = damus_state.contactCards.favorites
             let favorited_not_followed = Array(all_favorites.subtracting(Set(friends)))
             if !favorited_not_followed.isEmpty {
@@ -607,6 +608,7 @@ class HomeModel: ContactsDelegate, ObservableObject {
                 favorites_filter.limit = 500
                 home_filters.append(favorites_filter)
             }
+        }
 
         self.homeHandlerTask?.cancel()
         self.homeHandlerTask = Task {

damus/Features/Timeline/Views/PostingTimelineView.swift

@@ -40,7 +40,11 @@ struct PostingTimelineView: View {
     func content_filter(_ fstate: FilterState) -> ((NostrEvent) -> Bool) {
         var filters = ContentFilters.defaults(damus_state: damus_state)
         filters.append(fstate.filter)
-        switch timeline_source {
+        
+        // If favourites feature is disabled, always use follows
+        let sourceToUse = damus_state.settings.enable_favourites_feature ? timeline_source : .follows
+        
+        switch sourceToUse {
         case .follows:
             filters.append(damus_state.contacts.friend_filter)
         case .favorites:
@@ -67,6 +71,7 @@ struct PostingTimelineView: View {
 
                     HStack(alignment: .center) {
                         SignalView(state: damus_state, signal: home.signal)
+                        if damus_state.settings.enable_favourites_feature {
                             let switchView = PostingTimelineSwitcherView(
                                 damusState: damus_state,
                                 timelineSource: $timeline_source
@@ -79,6 +84,7 @@ struct PostingTimelineView: View {
                             }
                         }
                     }
+                }
                 .frame(maxWidth: .infinity, alignment: .trailing)
                 .overlay {
                     Image("damus-home")