Add a RoomScreenHook.

ElementX/Sources/Screens/RoomScreen/RoomScreenCoordinator.swift

@@ -25,6 +25,7 @@ struct RoomScreenCoordinatorParameters {
     let ongoingCallRoomIDPublisher: CurrentValuePublisher<String?, Never>
     let appMediator: AppMediatorProtocol
     let appSettings: AppSettings
+    let appHooks: AppHooks
     let composerDraftService: ComposerDraftServiceProtocol
     let timelineControllerFactory: TimelineControllerFactoryProtocol
 }
@@ -73,6 +74,7 @@ final class RoomScreenCoordinator: CoordinatorProtocol {
                                             ongoingCallRoomIDPublisher: parameters.ongoingCallRoomIDPublisher,
                                             appMediator: parameters.appMediator,
                                             appSettings: parameters.appSettings,
+                                            appHooks: parameters.appHooks,
                                             analyticsService: ServiceLocator.shared.analytics,
                                             userIndicatorController: ServiceLocator.shared.userIndicatorController)
         

ElementX/Sources/Screens/RoomScreen/RoomScreenModels.swift

@@ -43,9 +43,18 @@ struct RoomScreenViewState: BindableState {
     }
     
     var canSendMessage = true
+    
+    /// Whether or not starting a call is supported.
+    var isCallingEnabled = true
+    /// Whether or not the user is allowed to join calls in this room.
     var canJoinCall = false
+    /// Whether or not this room currently has a call in progress.
     var hasOngoingCall: Bool
-    var shouldShowCallButton = true
+    /// Whether or not the user is already part of a call in another room.
+    var isParticipatingInOngoingCall = false
+    var shouldShowCallButton: Bool {
+        isCallingEnabled && !isParticipatingInOngoingCall // Hide the join call button when already in the call
+    }
     
     var isKnockingEnabled = false
     var isKnockableRoom = false
@@ -70,7 +79,7 @@ struct RoomScreenViewState: BindableState {
     
     var footerDetails: RoomScreenFooterViewDetails?
     
-    var bindings: RoomScreenViewStateBindings
+    var bindings = RoomScreenViewStateBindings()
 }
 
 struct RoomScreenViewStateBindings {

ElementX/Sources/Screens/RoomScreen/RoomScreenViewModel.swift

@@ -57,6 +57,7 @@ class RoomScreenViewModel: RoomScreenViewModelType, RoomScreenViewModelProtocol
          ongoingCallRoomIDPublisher: CurrentValuePublisher<String?, Never>,
          appMediator: AppMediatorProtocol,
          appSettings: AppSettings,
+         appHooks: AppHooks,
          analyticsService: AnalyticsService,
          userIndicatorController: UserIndicatorControllerProtocol) {
         self.clientProxy = clientProxy
@@ -69,16 +70,15 @@ class RoomScreenViewModel: RoomScreenViewModelType, RoomScreenViewModelProtocol
         self.initialSelectedPinnedEventID = initialSelectedPinnedEventID
         pinnedEventStringBuilder = .pinnedEventStringBuilder(userID: roomProxy.ownUserID)
 
-        super.init(initialViewState: .init(roomTitle: roomProxy.infoPublisher.value.displayName ?? roomProxy.id,
-                                           roomAvatar: roomProxy.infoPublisher.value.avatar,
-                                           hasOngoingCall: roomProxy.infoPublisher.value.hasRoomCall,
-                                           hasSuccessor: roomProxy.infoPublisher.value.successor != nil,
-                                           bindings: .init()),
+        let viewState = RoomScreenViewState(roomTitle: roomProxy.infoPublisher.value.displayName ?? roomProxy.id,
+                                            roomAvatar: roomProxy.infoPublisher.value.avatar,
+                                            hasOngoingCall: roomProxy.infoPublisher.value.hasRoomCall,
+                                            hasSuccessor: roomProxy.infoPublisher.value.successor != nil)
+        super.init(initialViewState: appHooks.roomScreenHook.update(viewState),
                    mediaProvider: mediaProvider)
         
         Task {
             await handleRoomInfoUpdate(roomProxy.infoPublisher.value)
-            
             await updateVerificationBadge()
         }
         
@@ -205,7 +205,7 @@ class RoomScreenViewModel: RoomScreenViewModelType, RoomScreenViewModelProtocol
             .receive(on: DispatchQueue.main)
             .sink { [weak self] ongoingCallRoomID in
                 guard let self else { return }
-                state.shouldShowCallButton = ongoingCallRoomID != roomProxy.id
+                state.isParticipatingInOngoingCall = ongoingCallRoomID == roomProxy.id
             }
             .store(in: &cancellables)
         
@@ -430,6 +430,7 @@ extension RoomScreenViewModel {
                             ongoingCallRoomIDPublisher: .init(.init(nil)),
                             appMediator: AppMediatorMock.default,
                             appSettings: ServiceLocator.shared.settings,
+                            appHooks: AppHooks(),
                             analyticsService: ServiceLocator.shared.analytics,
                             userIndicatorController: ServiceLocator.shared.userIndicatorController)
     }