Enable fuzzy search behind a feature flag. (#1490)

ElementX/Sources/Screens/HomeScreen/HomeScreenModels.swift

@@ -47,6 +47,7 @@ enum HomeScreenViewAction {
     case skipSessionVerification
     case updateVisibleItemRange(range: Range<Int>, isScrolling: Bool)
     case selectInvites
+    case updatedSearchQuery
 }
 
 enum HomeScreenRoomListMode: CustomStringConvertible {
@@ -79,12 +80,14 @@ struct HomeScreenViewState: BindableState {
     
     var selectedRoomID: String?
     
+    var fuzzySearchEnabled: Bool
+    
     var visibleRooms: [HomeScreenRoom] {
         if roomListMode == .skeletons {
             return placeholderRooms
         }
         
-        if bindings.searchQuery.isEmpty {
+        if fuzzySearchEnabled || bindings.searchQuery.isEmpty {
             return rooms
         }
         

ElementX/Sources/Screens/HomeScreen/HomeScreenViewModel.swift

@@ -49,7 +49,7 @@ class HomeScreenViewModel: HomeScreenViewModelType, HomeScreenViewModelProtocol
         roomSummaryProvider = userSession.clientProxy.roomSummaryProvider
         inviteSummaryProvider = userSession.clientProxy.inviteSummaryProvider
         
-        super.init(initialViewState: HomeScreenViewState(userID: userSession.userID),
+        super.init(initialViewState: HomeScreenViewState(userID: userSession.userID, fuzzySearchEnabled: appSettings.fuzzySearchEnabled),
                    imageProvider: userSession.mediaProvider)
         
         userSession.callbacks
@@ -74,6 +74,10 @@ class HomeScreenViewModel: HomeScreenViewModelType, HomeScreenViewModelProtocol
             .weakAssign(to: \.state.selectedRoomID, on: self)
             .store(in: &cancellables)
         
+        appSettings.$fuzzySearchEnabled
+            .weakAssign(to: \.state.fuzzySearchEnabled, on: self)
+            .store(in: &cancellables)
+        
         guard let roomSummaryProvider, let inviteSummaryProvider else {
             MXLog.error("Room summary provider unavailable")
             return
@@ -187,6 +191,8 @@ class HomeScreenViewModel: HomeScreenViewModelType, HomeScreenViewModelProtocol
             callback?(.presentStartChatScreen)
         case .selectInvites:
             callback?(.presentInvitesScreen)
+        case .updatedSearchQuery:
+            roomSummaryProvider?.updateFilterPattern(state.bindings.searchQuery)
         }
     }
     

ElementX/Sources/Screens/HomeScreen/View/HomeScreen.swift

@@ -80,9 +80,13 @@ struct HomeScreen: View {
                 updateVisibleRange()
             }
             .onChange(of: context.searchQuery) { searchQuery in
-                guard searchQuery.isEmpty else { return }
-                // Dispatch allows the view to update after changing the query
-                DispatchQueue.main.async { updateVisibleRange() }
+                if context.viewState.fuzzySearchEnabled {
+                    context.send(viewAction: .updatedSearchQuery)
+                } else {
+                    guard searchQuery.isEmpty else { return }
+                    // Dispatch allows the view to update after changing the query
+                    DispatchQueue.main.async { updateVisibleRange() }
+                }
             }
             .onReceive(scrollViewAdapter.scrollDirection) { direction in
                 withAnimation(.elementDefault) { lastScrollDirection = direction }