Add a feature flag for fuzzy room list searching

ElementX/Sources/Application/AppSettings.swift

@@ -45,6 +45,7 @@ final class AppSettings {
         // Feature flags
         case publicSearchEnabled
         case draftRestoringEnabled
+        case fuzzyRoomListSearchEnabled
     }
     
     private static var suiteName: String = InfoPlistReader.main.appGroupIdentifier
@@ -273,6 +274,9 @@ final class AppSettings {
     @UserPreference(key: UserDefaultsKeys.draftRestoringEnabled, defaultValue: false, storageType: .userDefaults(store))
     var draftRestoringEnabled
     
+    @UserPreference(key: UserDefaultsKeys.fuzzyRoomListSearchEnabled, defaultValue: false, storageType: .userDefaults(store))
+    var fuzzyRoomListSearchEnabled
+        
     #endif
     
     // MARK: - Shared

ElementX/Sources/Screens/Settings/DeveloperOptionsScreen/DeveloperOptionsScreenModels.swift

@@ -48,6 +48,7 @@ protocol DeveloperOptionsProtocol: AnyObject {
     var hideUnreadMessagesBadge: Bool { get set }
     var draftRestoringEnabled: Bool { get set }
     var elementCallBaseURL: URL { get set }
+    var fuzzyRoomListSearchEnabled: Bool { get set }
 }
 
 extension AppSettings: DeveloperOptionsProtocol { }

ElementX/Sources/Screens/Settings/DeveloperOptionsScreen/View/DeveloperOptionsScreen.swift

@@ -31,6 +31,10 @@ struct DeveloperOptionsScreen: View {
                 Toggle(isOn: $context.hideUnreadMessagesBadge) {
                     Text("Hide grey dots")
                 }
+                
+                Toggle(isOn: $context.fuzzyRoomListSearchEnabled) {
+                    Text("Fuzzy searching")
+                }
             }
             
             Section("Room") {

ElementX/Sources/Services/Client/ClientProxy.swift

@@ -24,6 +24,7 @@ import MatrixRustSDK
 class ClientProxy: ClientProxyProtocol {
     private let client: ClientProtocol
     private let networkMonitor: NetworkMonitorProtocol
+    private let appSettings: AppSettings
     
     private let mediaLoader: MediaLoaderProtocol
     private let clientQueue: DispatchQueue
@@ -123,9 +124,11 @@ class ClientProxy: ClientProxyProtocol {
     private let sendQueueStatusSubject = CurrentValueSubject<Bool, Never>(false)
     
     init(client: ClientProtocol,
-         networkMonitor: NetworkMonitorProtocol) async {
+         networkMonitor: NetworkMonitorProtocol,
+         appSettings: AppSettings) async {
         self.client = client
         self.networkMonitor = networkMonitor
+        self.appSettings = appSettings
         
         clientQueue = .init(label: "ClientProxyQueue", attributes: .concurrent)
         
@@ -726,13 +729,15 @@ class ClientProxy: ClientProxyProtocol {
                                                       eventStringBuilder: eventStringBuilder,
                                                       name: "AllRooms",
                                                       shouldUpdateVisibleRange: true,
-                                                      notificationSettings: notificationSettings)
+                                                      notificationSettings: notificationSettings,
+                                                      appSettings: appSettings)
             try await roomSummaryProvider?.setRoomList(roomListService.allRooms())
             
             alternateRoomSummaryProvider = RoomSummaryProvider(roomListService: roomListService,
                                                                eventStringBuilder: eventStringBuilder,
                                                                name: "MessageForwarding",
-                                                               notificationSettings: notificationSettings)
+                                                               notificationSettings: notificationSettings,
+                                                               appSettings: appSettings)
             try await alternateRoomSummaryProvider?.setRoomList(roomListService.allRooms())
                         
             self.syncService = syncService

ElementX/Sources/Services/Room/RoomSummary/RoomSummaryProvider.swift

@@ -24,6 +24,7 @@ class RoomSummaryProvider: RoomSummaryProviderProtocol {
     private let name: String
     private let shouldUpdateVisibleRange: Bool
     private let notificationSettings: NotificationSettingsProxyProtocol
+    private let appSettings: AppSettings
 
     private let roomListPageSize = 200
     
@@ -65,13 +66,15 @@ class RoomSummaryProvider: RoomSummaryProviderProtocol {
          eventStringBuilder: RoomEventStringBuilder,
          name: String,
          shouldUpdateVisibleRange: Bool = false,
-         notificationSettings: NotificationSettingsProxyProtocol) {
+         notificationSettings: NotificationSettingsProxyProtocol,
+         appSettings: AppSettings) {
         self.roomListService = roomListService
         serialDispatchQueue = DispatchQueue(label: "io.element.elementx.roomsummaryprovider", qos: .default)
         self.eventStringBuilder = eventStringBuilder
         self.name = name
         self.shouldUpdateVisibleRange = shouldUpdateVisibleRange
         self.notificationSettings = notificationSettings
+        self.appSettings = appSettings
         
         diffsPublisher
             .receive(on: serialDispatchQueue)
@@ -148,7 +151,11 @@ class RoomSummaryProvider: RoomSummaryProviderProtocol {
         case .excludeAll:
             _ = listUpdatesSubscriptionResult?.controller.setFilter(kind: .none)
         case let .search(query):
-            let filters: [RoomListEntriesDynamicFilterKind] = [.normalizedMatchRoomName(pattern: query), .nonLeft]
+            let filters: [RoomListEntriesDynamicFilterKind] = if appSettings.fuzzyRoomListSearchEnabled {
+                [.fuzzyMatchRoomName(pattern: query), .nonLeft]
+            } else {
+                [.normalizedMatchRoomName(pattern: query), .nonLeft]
+            }
             _ = listUpdatesSubscriptionResult?.controller.setFilter(kind: .all(filters: filters))
         case let .all(filters):
             var filters = filters.map(\.rustFilter)

ElementX/Sources/Services/UserSession/UserSessionStore.swift

@@ -148,7 +148,8 @@ class UserSessionStore: UserSessionStoreProtocol {
     
     private func setupProxyForClient(_ client: Client) async -> ClientProxyProtocol {
         await ClientProxy(client: client,
-                          networkMonitor: ServiceLocator.shared.networkMonitor)
+                          networkMonitor: ServiceLocator.shared.networkMonitor,
+                          appSettings: ServiceLocator.shared.settings)
     }
     
     private func deleteSessionDirectory(for credentials: KeychainCredentials) {