Implement Knock Logic (#3573)

* WIP RequestToJoin struct

* implemented the logic to display the cells

* knock request banner accept flow

* mark all knocks as seen implemented

* details logic

* implemented accept, decline and ban in the list

* added a loader and modified the stacked view

of the banner

* pr suggestions

* updated naming and loading strings

* added the initial loading state

improved code and the tests

* updated a string that has changed

* code improvement

* tests for the room screen view model

* room details tests

and improved the knock requests tests for the room screen

* knock requests list tests

* added error state alerts with retry

* struct has been renamed on the sdk

so I renamed it also on the app side

* update SDK

ElementX/Sources/Screens/RoomDetailsScreen/RoomDetailsScreenModels.swift

@@ -53,6 +53,8 @@ struct RoomDetailsScreenViewState: BindableState {
     
     var knockingEnabled = false
     var isKnockableRoom = false
+    var knockRequestsCount = 0
+    
     var canSeeKnockingRequests: Bool {
         knockingEnabled && dmRecipient == nil && isKnockableRoom && (canInviteUsers || canKickUsers || canBanUsers)
     }

ElementX/Sources/Screens/RoomDetailsScreen/RoomDetailsScreenViewModel.swift

@@ -187,6 +187,18 @@ class RoomDetailsScreenViewModel: RoomDetailsScreenViewModelType, RoomDetailsScr
                 Task { await self?.updatePowerLevelPermissions() }
             }
             .store(in: &cancellables)
+        
+        roomProxy.knockRequestsStatePublisher
+            .map { requestsState in
+                guard case let .loaded(requests) = requestsState else {
+                    return 0
+                }
+                return requests.count
+            }
+            .removeDuplicates()
+            .throttle(for: .milliseconds(100), scheduler: DispatchQueue.main, latest: true)
+            .weakAssign(to: \.state.knockRequestsCount, on: self)
+            .store(in: &cancellables)
     }
     
     private func updateRoomInfo(_ roomInfo: RoomInfoProxy) {

ElementX/Sources/Screens/RoomDetailsScreen/View/RoomDetailsScreen.swift

@@ -166,8 +166,7 @@ struct RoomDetailsScreen: View {
             if context.viewState.canSeeKnockingRequests {
                 ListRow(label: .default(title: L10n.screenRoomDetailsRequestsToJoinTitle,
                                         icon: \.askToJoin),
-                        // TODO: Display count if requests > 0 when an API for them is available
-                        details: .counter(1),
+                        details: context.viewState.knockRequestsCount > 0 ? .counter(context.viewState.knockRequestsCount) : nil,
                         kind: .navigationLink {
                             context.send(viewAction: .processTapRequestsToJoin)
                         })
@@ -324,6 +323,7 @@ struct RoomDetailsScreen: View {
 struct RoomDetailsScreen_Previews: PreviewProvider, TestablePreview {
     static let genericRoomViewModel = {
         ServiceLocator.shared.settings.knockingEnabled = true
+        let knockRequests: [KnockRequestProxyMock] = [.init()]
         let members: [RoomMemberProxyMock] = [
             .mockMeAdmin,
             .mockAlice,
@@ -344,6 +344,7 @@ struct RoomDetailsScreen_Previews: PreviewProvider, TestablePreview {
                                                   isEncrypted: true,
                                                   canonicalAlias: "#alias:domain.com",
                                                   members: members,
+                                                  knockRequestsState: .loaded(knockRequests),
                                                   joinRule: .knock))
         
         var notificationSettingsProxyMockConfiguration = NotificationSettingsProxyMockConfiguration()
@@ -388,6 +389,7 @@ struct RoomDetailsScreen_Previews: PreviewProvider, TestablePreview {
     }()
     
     static let simpleRoomViewModel = {
+        let knockRequests: [KnockRequestProxyMock] = [.init()]
         ServiceLocator.shared.settings.knockingEnabled = true
         let members: [RoomMemberProxyMock] = [
             .mockMeAdmin,
@@ -400,6 +402,7 @@ struct RoomDetailsScreen_Previews: PreviewProvider, TestablePreview {
                                                   isDirect: false,
                                                   isEncrypted: false,
                                                   members: members,
+                                                  knockRequestsState: .loaded(knockRequests),
                                                   joinRule: .knock))
         let notificationSettingsProxy = NotificationSettingsProxyMock(with: .init())