Knocking feature polishing part 2 (#3738)

* improved implementation of the unknown state

* forget button in the banned state

* error handling for forbidden access

* added the forget function

fixed DMs, and updated preview tests

* removed banned room proxy

* code polishing and test improvement

ElementX.xcodeproj/project.pbxproj

@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 54;
+	objectVersion = 56;
 	objects = {
 
 /* Begin PBXAggregateTarget section */
@@ -1359,7 +1359,7 @@
 		044E501B8331B339874D1B96 /* CompoundIcon.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CompoundIcon.swift; sourceTree = "<group>"; };
 		045253F9967A535EE5B16691 /* Label.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Label.swift; sourceTree = "<group>"; };
 		046C0D3F53B0B5EF0A1F5BEA /* RoomSummaryTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RoomSummaryTests.swift; sourceTree = "<group>"; };
-		048A21188AB19349D026BECD /* PrivacyInfo.xcprivacy */ = {isa = PBXFileReference; path = PrivacyInfo.xcprivacy; sourceTree = "<group>"; };
+		048A21188AB19349D026BECD /* PrivacyInfo.xcprivacy */ = {isa = PBXFileReference; lastKnownFileType = text.xml; path = PrivacyInfo.xcprivacy; sourceTree = "<group>"; };
 		04BB8DDE245ED86C489BA983 /* AccessibilityIdentifiers.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AccessibilityIdentifiers.swift; sourceTree = "<group>"; };
 		04DF593C3F7AF4B2FBAEB05D /* FileManager.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FileManager.swift; sourceTree = "<group>"; };
 		0516C69708D5CBDE1A8E77EC /* RoomDirectorySearchProxyProtocol.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RoomDirectorySearchProxyProtocol.swift; sourceTree = "<group>"; };
@@ -1429,7 +1429,7 @@
 		128501375217576AF0FE3E92 /* RoomAttachmentPicker.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RoomAttachmentPicker.swift; sourceTree = "<group>"; };
 		12B09A94C519227264A41208 /* RoomMembershipDetailsProxy.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RoomMembershipDetailsProxy.swift; sourceTree = "<group>"; };
 		12FD5280AF55AB7F50F8E47D /* preview_avatar_room.jpg */ = {isa = PBXFileReference; lastKnownFileType = image.jpeg; path = preview_avatar_room.jpg; sourceTree = "<group>"; };
-		1304D9191300873EADA52D6E /* IntegrationTests.xctestplan */ = {isa = PBXFileReference; path = IntegrationTests.xctestplan; sourceTree = "<group>"; };
+		1304D9191300873EADA52D6E /* IntegrationTests.xctestplan */ = {isa = PBXFileReference; lastKnownFileType = text; path = IntegrationTests.xctestplan; sourceTree = "<group>"; };
 		130ED565A078F7E0B59D9D25 /* UNTextInputNotificationResponse+Creator.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "UNTextInputNotificationResponse+Creator.swift"; sourceTree = "<group>"; };
 		136F80A613B55BDD071DCEA5 /* JoinRoomScreenModels.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = JoinRoomScreenModels.swift; sourceTree = "<group>"; };
 		13802897C7AFA360EA74C0B0 /* en */ = {isa = PBXFileReference; lastKnownFileType = text.plist.stringsdict; name = en; path = en.lproj/Localizable.stringsdict; sourceTree = "<group>"; };
@@ -1530,7 +1530,7 @@
 		25F7FE40EF7490A7E09D7BE6 /* NotificationItemProxy.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NotificationItemProxy.swift; sourceTree = "<group>"; };
 		25F8664F1FB95AF3C4202478 /* PollFormScreenCoordinator.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PollFormScreenCoordinator.swift; sourceTree = "<group>"; };
 		260004737C573A56FA01E86E /* Encodable.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Encodable.swift; sourceTree = "<group>"; };
-		267BB1D5B08A9511F894CB57 /* PreviewTests.xctestplan */ = {isa = PBXFileReference; path = PreviewTests.xctestplan; sourceTree = "<group>"; };
+		267BB1D5B08A9511F894CB57 /* PreviewTests.xctestplan */ = {isa = PBXFileReference; lastKnownFileType = text; path = PreviewTests.xctestplan; sourceTree = "<group>"; };
 		26B0A96B8FE4849227945067 /* VoiceMessageRecorder.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = VoiceMessageRecorder.swift; sourceTree = "<group>"; };
 		26EAAB54C6CE91D64B69A9F8 /* AppLockServiceProtocol.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppLockServiceProtocol.swift; sourceTree = "<group>"; };
 		2711E5996016ABD6EAAEB58A /* LogLevel.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LogLevel.swift; sourceTree = "<group>"; };
@@ -1604,7 +1604,7 @@
 		3558A15CFB934F9229301527 /* RestorationToken.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RestorationToken.swift; sourceTree = "<group>"; };
 		35AFCF4C05DEED04E3DB1A16 /* de */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = de; path = de.lproj/Localizable.strings; sourceTree = "<group>"; };
 		35FA991289149D31F4286747 /* UserPreference.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = UserPreference.swift; sourceTree = "<group>"; };
-		36DA824791172B9821EACBED /* PrivacyInfo.xcprivacy */ = {isa = PBXFileReference; path = PrivacyInfo.xcprivacy; sourceTree = "<group>"; };
+		36DA824791172B9821EACBED /* PrivacyInfo.xcprivacy */ = {isa = PBXFileReference; lastKnownFileType = text.xml; path = PrivacyInfo.xcprivacy; sourceTree = "<group>"; };
 		36FD673E24FBFCFDF398716A /* RoomMemberProxyMock.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RoomMemberProxyMock.swift; sourceTree = "<group>"; };
 		371B248460BD1A3F20318137 /* TimelineProvider.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TimelineProvider.swift; sourceTree = "<group>"; };
 		376D941BF8BB294389C0DE24 /* MapTilerURLBuildersTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MapTilerURLBuildersTests.swift; sourceTree = "<group>"; };
@@ -1721,7 +1721,7 @@
 		4B41FABA2B0AEF4389986495 /* LoginMode.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LoginMode.swift; sourceTree = "<group>"; };
 		4BD371B60E07A5324B9507EF /* AnalyticsSettingsScreenCoordinator.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AnalyticsSettingsScreenCoordinator.swift; sourceTree = "<group>"; };
 		4C8D988E82A8DFA13BE46F7C /* pl */ = {isa = PBXFileReference; lastKnownFileType = text.plist.stringsdict; name = pl; path = pl.lproj/Localizable.stringsdict; sourceTree = "<group>"; };
-		4CD6AC7546E8D7E5C73CEA48 /* ElementX.app */ = {isa = PBXFileReference; includeInIndex = 0; lastKnownFileType = wrapper.application; path = ElementX.app; sourceTree = BUILT_PRODUCTS_DIR; };
+		4CD6AC7546E8D7E5C73CEA48 /* ElementX.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = ElementX.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		4CDDDDD9FE1A699D23A5E096 /* LoginScreen.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LoginScreen.swift; sourceTree = "<group>"; };
 		4D3A7375AB22721C436EB056 /* ComposerToolbarModels.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ComposerToolbarModels.swift; sourceTree = "<group>"; };
 		4E2245243369B99216C7D84E /* ImageCache.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ImageCache.swift; sourceTree = "<group>"; };
@@ -2008,7 +2008,7 @@
 		8D55702474F279D910D2D162 /* RoomStateEventStringBuilder.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RoomStateEventStringBuilder.swift; sourceTree = "<group>"; };
 		8D8169443E5AC5FF71BFB3DB /* cs */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = cs; path = cs.lproj/Localizable.strings; sourceTree = "<group>"; };
 		8DA1E8F287680C8ED25EDBAC /* NetworkMonitorMock.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NetworkMonitorMock.swift; sourceTree = "<group>"; };
-		8E088F2A1B9EC529D3221931 /* UITests.xctestplan */ = {isa = PBXFileReference; path = UITests.xctestplan; sourceTree = "<group>"; };
+		8E088F2A1B9EC529D3221931 /* UITests.xctestplan */ = {isa = PBXFileReference; lastKnownFileType = text; path = UITests.xctestplan; sourceTree = "<group>"; };
 		8E1584F8BCF407BB94F48F04 /* EncryptionResetPasswordScreen.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = EncryptionResetPasswordScreen.swift; sourceTree = "<group>"; };
 		8EAF4A49F3ACD8BB8B0D2371 /* ClientSDKMock.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ClientSDKMock.swift; sourceTree = "<group>"; };
 		8F062DD2CCD95DC33528A16F /* KnockRequestProxy.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = KnockRequestProxy.swift; sourceTree = "<group>"; };
@@ -2200,7 +2200,7 @@
 		B50F03079F6B5EF9CA005F14 /* TimelineProxyProtocol.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TimelineProxyProtocol.swift; sourceTree = "<group>"; };
 		B53AC78E49A297AC1D72A7CF /* AppMediator.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppMediator.swift; sourceTree = "<group>"; };
 		B590BD4507D4F0A377FDE01A /* LoadableAvatarImage.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LoadableAvatarImage.swift; sourceTree = "<group>"; };
-		B61C339A2FDDBD067FF6635C /* ConfettiScene.scn */ = {isa = PBXFileReference; path = ConfettiScene.scn; sourceTree = "<group>"; };
+		B61C339A2FDDBD067FF6635C /* ConfettiScene.scn */ = {isa = PBXFileReference; lastKnownFileType = file.bplist; path = ConfettiScene.scn; sourceTree = "<group>"; };
 		B63B69F9A2BC74DD40DC75C8 /* AdvancedSettingsScreenViewModel.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AdvancedSettingsScreenViewModel.swift; sourceTree = "<group>"; };
 		B6404166CBF5CC88673FF9E2 /* RoomDetails.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RoomDetails.swift; sourceTree = "<group>"; };
 		B655A536341D2695158C6664 /* AuthenticationClientBuilderFactory.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AuthenticationClientBuilderFactory.swift; sourceTree = "<group>"; };
@@ -2227,7 +2227,7 @@
 		BA40B98B098B6F0371B750B3 /* TemplateScreenModels.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TemplateScreenModels.swift; sourceTree = "<group>"; };
 		BA919F521E9F0EE3638AFC85 /* BugReportScreen.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BugReportScreen.swift; sourceTree = "<group>"; };
 		BB284643AF7AB131E307DCE0 /* AudioSessionProtocol.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AudioSessionProtocol.swift; sourceTree = "<group>"; };
-		BB576F4118C35E6B5124FA22 /* test_apple_image.heic */ = {isa = PBXFileReference; path = test_apple_image.heic; sourceTree = "<group>"; };
+		BB576F4118C35E6B5124FA22 /* test_apple_image.heic */ = {isa = PBXFileReference; lastKnownFileType = file; path = test_apple_image.heic; sourceTree = "<group>"; };
 		BB5B00A014307CE37B2812CD /* TimelineViewModelProtocol.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TimelineViewModelProtocol.swift; sourceTree = "<group>"; };
 		BB8BC4C791D0E88CFCF4E5DF /* ServerSelectionScreenCoordinator.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ServerSelectionScreenCoordinator.swift; sourceTree = "<group>"; };
 		BBEC57C204D77908E355EF42 /* AudioRecorderProtocol.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AudioRecorderProtocol.swift; sourceTree = "<group>"; };
@@ -2325,7 +2325,7 @@
 		CDB3227C7A74B734924942E9 /* RoomSummaryProvider.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RoomSummaryProvider.swift; sourceTree = "<group>"; };
 		CDE3F3911FF7CC639BDE5844 /* nl */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = nl; path = nl.lproj/Localizable.strings; sourceTree = "<group>"; };
 		CEE20623EB4A9B88FB29F2BA /* fr */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = fr; path = fr.lproj/SAS.strings; sourceTree = "<group>"; };
-		CEE41494C837AA403A06A5D9 /* UnitTests.xctestplan */ = {isa = PBXFileReference; path = UnitTests.xctestplan; sourceTree = "<group>"; };
+		CEE41494C837AA403A06A5D9 /* UnitTests.xctestplan */ = {isa = PBXFileReference; lastKnownFileType = text; path = UnitTests.xctestplan; sourceTree = "<group>"; };
 		D01FD1171FF40E34D707FD00 /* BigIcon.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BigIcon.swift; sourceTree = "<group>"; };
 		D046ABB22E680F7C5054441B /* SecurityAndPrivacyScreenViewModelProtocol.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SecurityAndPrivacyScreenViewModelProtocol.swift; sourceTree = "<group>"; };
 		D071F86CD47582B9196C9D16 /* UserDiscoverySection.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = UserDiscoverySection.swift; sourceTree = "<group>"; };
@@ -2380,7 +2380,7 @@
 		DC0AEA686E425F86F6BA0404 /* UNNotification+Creator.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "UNNotification+Creator.swift"; sourceTree = "<group>"; };
 		DC10CCC8D68B863E20660DBC /* MessageForwardingScreenViewModelProtocol.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MessageForwardingScreenViewModelProtocol.swift; sourceTree = "<group>"; };
 		DC528B3764E3CF7FCFEF40E7 /* PollInteractionHandler.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PollInteractionHandler.swift; sourceTree = "<group>"; };
-		DCA2D836BD10303F37FAAEED /* test_voice_message.m4a */ = {isa = PBXFileReference; path = test_voice_message.m4a; sourceTree = "<group>"; };
+		DCA2D836BD10303F37FAAEED /* test_voice_message.m4a */ = {isa = PBXFileReference; lastKnownFileType = file; path = test_voice_message.m4a; sourceTree = "<group>"; };
 		DCAC01A97A43BE07B9E94E43 /* ShareExtensionModels.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ShareExtensionModels.swift; sourceTree = "<group>"; };
 		DCF239C619971FDE48132550 /* SecureBackupLogoutConfirmationScreenModels.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SecureBackupLogoutConfirmationScreenModels.swift; sourceTree = "<group>"; };
 		DD8C9BBB729C941BEE0E2A63 /* TimelineProviderProtocol.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TimelineProviderProtocol.swift; sourceTree = "<group>"; };
@@ -2420,7 +2420,7 @@
 		E5272BC4A60B6AD7553BACA1 /* BlurHashDecode.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BlurHashDecode.swift; sourceTree = "<group>"; };
 		E53BFB7E4F329621C844E8C3 /* AnalyticsPromptScreen.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AnalyticsPromptScreen.swift; sourceTree = "<group>"; };
 		E55B5EA766E89FF1F87C3ACB /* RoomNotificationSettingsProxyProtocol.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RoomNotificationSettingsProxyProtocol.swift; sourceTree = "<group>"; };
-		E5E7D4EE7CA295E5039FDA21 /* portrait_test_video.mp4 */ = {isa = PBXFileReference; path = portrait_test_video.mp4; sourceTree = "<group>"; };
+		E5E7D4EE7CA295E5039FDA21 /* portrait_test_video.mp4 */ = {isa = PBXFileReference; lastKnownFileType = file; path = portrait_test_video.mp4; sourceTree = "<group>"; };
 		E5E94DCFEE803E5ABAE8ACCE /* KeychainControllerProtocol.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = KeychainControllerProtocol.swift; sourceTree = "<group>"; };
 		E5F2B6443D1ED8602F328539 /* ru */ = {isa = PBXFileReference; lastKnownFileType = text.plist.stringsdict; name = ru; path = ru.lproj/Localizable.stringsdict; sourceTree = "<group>"; };
 		E5FDFAA04174CC99FB66391C /* EditRoomAddressScreenViewModel.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = EditRoomAddressScreenViewModel.swift; sourceTree = "<group>"; };
@@ -2464,7 +2464,7 @@
 		ED0CBEAB5F796BEFBAF7BB6A /* VideoRoomTimelineView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = VideoRoomTimelineView.swift; sourceTree = "<group>"; };
 		ED1D792EB82506A19A72C8DE /* RoomTimelineItemProtocol.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RoomTimelineItemProtocol.swift; sourceTree = "<group>"; };
 		ED33988DA4FD4FC666800106 /* SessionVerificationScreenViewModel.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SessionVerificationScreenViewModel.swift; sourceTree = "<group>"; };
-		ED482057AE39D5C6D9C5F3D8 /* message.caf */ = {isa = PBXFileReference; path = message.caf; sourceTree = "<group>"; };
+		ED482057AE39D5C6D9C5F3D8 /* message.caf */ = {isa = PBXFileReference; lastKnownFileType = file; path = message.caf; sourceTree = "<group>"; };
 		ED49073BB1C1FC649DAC2CCD /* LocationRoomTimelineView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LocationRoomTimelineView.swift; sourceTree = "<group>"; };
 		ED60E4D2CD678E1EBF16F77A /* BlockedUsersScreen.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BlockedUsersScreen.swift; sourceTree = "<group>"; };
 		EE378083653EF0C9B5E9D580 /* EmoteRoomTimelineItemContent.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = EmoteRoomTimelineItemContent.swift; sourceTree = "<group>"; };
@@ -7919,9 +7919,7 @@
 					"@executable_path/../../Frameworks",
 				);
 				MARKETING_VERSION = "$(MARKETING_VERSION)";
-				OTHER_SWIFT_FLAGS = (
-					"-DIS_NSE",
-				);
+				OTHER_SWIFT_FLAGS = "-DIS_NSE";
 				PRODUCT_BUNDLE_IDENTIFIER = "${BASE_BUNDLE_IDENTIFIER}.nse";
 				PRODUCT_DISPLAY_NAME = "$(APP_DISPLAY_NAME)";
 				PRODUCT_NAME = NSE;
@@ -7971,9 +7969,7 @@
 					"@executable_path/Frameworks",
 				);
 				MARKETING_VERSION = "$(MARKETING_VERSION)";
-				OTHER_SWIFT_FLAGS = (
-					"-DIS_MAIN_APP",
-				);
+				OTHER_SWIFT_FLAGS = "-DIS_MAIN_APP";
 				PILLS_UT_TYPE_IDENTIFIER = "$(BASE_BUNDLE_IDENTIFIER).pills";
 				PRODUCT_BUNDLE_IDENTIFIER = "$(BASE_BUNDLE_IDENTIFIER)";
 				PRODUCT_NAME = "$(APP_NAME)";
@@ -8000,9 +7996,7 @@
 					"@executable_path/Frameworks",
 				);
 				MARKETING_VERSION = "$(MARKETING_VERSION)";
-				OTHER_SWIFT_FLAGS = (
-					"-DIS_MAIN_APP",
-				);
+				OTHER_SWIFT_FLAGS = "-DIS_MAIN_APP";
 				PILLS_UT_TYPE_IDENTIFIER = "$(BASE_BUNDLE_IDENTIFIER).pills";
 				PRODUCT_BUNDLE_IDENTIFIER = "$(BASE_BUNDLE_IDENTIFIER)";
 				PRODUCT_NAME = "$(APP_NAME)";
@@ -8268,9 +8262,7 @@
 					"@executable_path/../../Frameworks",
 				);
 				MARKETING_VERSION = "$(MARKETING_VERSION)";
-				OTHER_SWIFT_FLAGS = (
-					"-DIS_NSE",
-				);
+				OTHER_SWIFT_FLAGS = "-DIS_NSE";
 				PRODUCT_BUNDLE_IDENTIFIER = "${BASE_BUNDLE_IDENTIFIER}.nse";
 				PRODUCT_DISPLAY_NAME = "$(APP_DISPLAY_NAME)";
 				PRODUCT_NAME = NSE;

ElementX/Sources/Mocks/Generated/GeneratedMocks.swift

@@ -13393,6 +13393,70 @@ class RoomPreviewProxyMock: RoomPreviewProxyProtocol, @unchecked Sendable {
     var underlyingOwnMembershipDetails: RoomMembershipDetailsProxyProtocol?
     var ownMembershipDetailsClosure: (() async -> RoomMembershipDetailsProxyProtocol?)?
 
+    //MARK: - forgetRoom
+
+    var forgetRoomUnderlyingCallsCount = 0
+    var forgetRoomCallsCount: Int {
+        get {
+            if Thread.isMainThread {
+                return forgetRoomUnderlyingCallsCount
+            } else {
+                var returnValue: Int? = nil
+                DispatchQueue.main.sync {
+                    returnValue = forgetRoomUnderlyingCallsCount
+                }
+
+                return returnValue!
+            }
+        }
+        set {
+            if Thread.isMainThread {
+                forgetRoomUnderlyingCallsCount = newValue
+            } else {
+                DispatchQueue.main.sync {
+                    forgetRoomUnderlyingCallsCount = newValue
+                }
+            }
+        }
+    }
+    var forgetRoomCalled: Bool {
+        return forgetRoomCallsCount > 0
+    }
+
+    var forgetRoomUnderlyingReturnValue: Result<Void, RoomProxyError>!
+    var forgetRoomReturnValue: Result<Void, RoomProxyError>! {
+        get {
+            if Thread.isMainThread {
+                return forgetRoomUnderlyingReturnValue
+            } else {
+                var returnValue: Result<Void, RoomProxyError>? = nil
+                DispatchQueue.main.sync {
+                    returnValue = forgetRoomUnderlyingReturnValue
+                }
+
+                return returnValue!
+            }
+        }
+        set {
+            if Thread.isMainThread {
+                forgetRoomUnderlyingReturnValue = newValue
+            } else {
+                DispatchQueue.main.sync {
+                    forgetRoomUnderlyingReturnValue = newValue
+                }
+            }
+        }
+    }
+    var forgetRoomClosure: (() async -> Result<Void, RoomProxyError>)?
+
+    func forgetRoom() async -> Result<Void, RoomProxyError> {
+        forgetRoomCallsCount += 1
+        if let forgetRoomClosure = forgetRoomClosure {
+            return await forgetRoomClosure()
+        } else {
+            return forgetRoomReturnValue
+        }
+    }
 }
 class RoomProxyMock: RoomProxyProtocol, @unchecked Sendable {
     var id: String {

ElementX/Sources/Mocks/Generated/SDKGeneratedMocks.swift

@@ -11429,6 +11429,46 @@ open class RoomSDKMock: MatrixRustSDK.Room, @unchecked Sendable {
         enableSendQueueEnableClosure?(enable)
     }
 
+    //MARK: - forget
+
+    open var forgetThrowableError: Error?
+    var forgetUnderlyingCallsCount = 0
+    open var forgetCallsCount: Int {
+        get {
+            if Thread.isMainThread {
+                return forgetUnderlyingCallsCount
+            } else {
+                var returnValue: Int? = nil
+                DispatchQueue.main.sync {
+                    returnValue = forgetUnderlyingCallsCount
+                }
+
+                return returnValue!
+            }
+        }
+        set {
+            if Thread.isMainThread {
+                forgetUnderlyingCallsCount = newValue
+            } else {
+                DispatchQueue.main.sync {
+                    forgetUnderlyingCallsCount = newValue
+                }
+            }
+        }
+    }
+    open var forgetCalled: Bool {
+        return forgetCallsCount > 0
+    }
+    open var forgetClosure: (() async throws -> Void)?
+
+    open override func forget() async throws {
+        if let error = forgetThrowableError {
+            throw error
+        }
+        forgetCallsCount += 1
+        try await forgetClosure?()
+    }
+
     //MARK: - getPowerLevels
 
     open var getPowerLevelsThrowableError: Error?
@@ -19421,6 +19461,71 @@ open class SyncServiceBuilderSDKMock: MatrixRustSDK.SyncServiceBuilder, @uncheck
         }
     }
 
+    //MARK: - withOfflineMode
+
+    var withOfflineModeUnderlyingCallsCount = 0
+    open var withOfflineModeCallsCount: Int {
+        get {
+            if Thread.isMainThread {
+                return withOfflineModeUnderlyingCallsCount
+            } else {
+                var returnValue: Int? = nil
+                DispatchQueue.main.sync {
+                    returnValue = withOfflineModeUnderlyingCallsCount
+                }
+
+                return returnValue!
+            }
+        }
+        set {
+            if Thread.isMainThread {
+                withOfflineModeUnderlyingCallsCount = newValue
+            } else {
+                DispatchQueue.main.sync {
+                    withOfflineModeUnderlyingCallsCount = newValue
+                }
+            }
+        }
+    }
+    open var withOfflineModeCalled: Bool {
+        return withOfflineModeCallsCount > 0
+    }
+
+    var withOfflineModeUnderlyingReturnValue: SyncServiceBuilder!
+    open var withOfflineModeReturnValue: SyncServiceBuilder! {
+        get {
+            if Thread.isMainThread {
+                return withOfflineModeUnderlyingReturnValue
+            } else {
+                var returnValue: SyncServiceBuilder? = nil
+                DispatchQueue.main.sync {
+                    returnValue = withOfflineModeUnderlyingReturnValue
+                }
+
+                return returnValue!
+            }
+        }
+        set {
+            if Thread.isMainThread {
+                withOfflineModeUnderlyingReturnValue = newValue
+            } else {
+                DispatchQueue.main.sync {
+                    withOfflineModeUnderlyingReturnValue = newValue
+                }
+            }
+        }
+    }
+    open var withOfflineModeClosure: (() -> SyncServiceBuilder)?
+
+    open override func withOfflineMode() -> SyncServiceBuilder {
+        withOfflineModeCallsCount += 1
+        if let withOfflineModeClosure = withOfflineModeClosure {
+            return withOfflineModeClosure()
+        } else {
+            return withOfflineModeReturnValue
+        }
+    }
+
     //MARK: - withUtdHook
 
     var withUtdHookDelegateUnderlyingCallsCount = 0

ElementX/Sources/Mocks/RoomPreviewProxyMock.swift

@@ -13,13 +13,14 @@ extension RoomPreviewProxyMock {
         var roomID = "1"
         var canonicalAlias = "#3🌞problem:matrix.org"
         var name = "The Three-Body Problem - 三体"
-        var topic = "“Science and technology were the only keys to opening the door to the future, and people approached science with the faith and sincerity of elementary school students.”"
+        var topic: String? = "“Science and technology were the only keys to opening the door to the future, and people approached science with the faith and sincerity of elementary school students.”"
         var avatarURL = URL.mockMXCAvatar.absoluteString
         var numJoinedMembers = UInt64(100)
         var numActiveMembers = UInt64(100)
         var roomType = RoomType.room
         var membership: Membership?
         var joinRule: JoinRule
+        var isDirect = false
     }
     
     static var joinable: RoomPreviewProxyMock {
@@ -42,6 +43,14 @@ extension RoomPreviewProxyMock {
         return .init(.init(membership: .invited, joinRule: .invite))
     }
     
+    static func inviteDM(roomID: String? = nil) -> RoomPreviewProxyMock {
+        if let roomID {
+            return .init(.init(roomID: roomID, topic: nil, numJoinedMembers: 1, membership: .invited, joinRule: .invite, isDirect: true))
+        }
+        
+        return .init(.init(topic: nil, numJoinedMembers: 1, membership: .invited, joinRule: .invite, isDirect: true))
+    }
+    
     static var knockable: RoomPreviewProxyMock {
         .init(.init(membership: nil, joinRule: .knock))
     }
@@ -71,7 +80,7 @@ extension RoomPreviewProxyMock {
                                                       isHistoryWorldReadable: nil,
                                                       membership: configuration.membership,
                                                       joinRule: configuration.joinRule,
-                                                      isDirect: nil,
+                                                      isDirect: configuration.isDirect,
                                                       heroes: nil))
         
         let roomMembershipDetails = RoomMembershipDetailsProxyMock()

ElementX/Sources/Screens/JoinRoomScreen/JoinRoomScreenModels.swift

@@ -18,19 +18,21 @@ enum JoinRoomScreenMode: Equatable {
     case joinable
     case restricted
     case inviteRequired
-    case invited
+    case invited(isDM: Bool)
     case knockable
     case knocked
     case banned(sender: String?, reason: String?)
+    case forbidden
 }
 
 struct JoinRoomScreenRoomDetails {
     let name: String?
     let topic: String?
     let canonicalAlias: String?
-    let avatar: RoomAvatar
-    let memberCount: Int
+    let avatar: RoomAvatar?
+    let memberCount: Int?
     let inviter: RoomInviterDetails?
+    let isDirect: Bool?
 }
 
 struct JoinRoomScreenViewState: BindableState {
@@ -39,28 +41,45 @@ struct JoinRoomScreenViewState: BindableState {
     var roomDetails: JoinRoomScreenRoomDetails?
     
     var mode: JoinRoomScreenMode = .loading
-    
+        
     var bindings = JoinRoomScreenViewStateBindings()
     
     var title: String {
-        roomDetails?.name ?? L10n.screenJoinRoomTitleNoPreview
+        if isDMInvite, let inviter = roomDetails?.inviter {
+            return inviter.displayName ?? inviter.id
+        } else {
+            return roomDetails?.name ?? L10n.screenJoinRoomTitleNoPreview
+        }
     }
     
     var subtitle: String? {
         switch mode {
-        case .loading:
-            nil
-        case .unknown:
-            L10n.screenJoinRoomSubtitleNoPreview
-        case .knocked:
-            nil
+        case .invited(isDM: true):
+            if let inviter = roomDetails?.inviter {
+                return inviter.displayName != nil ? inviter.id : nil
+            }
+            return nil
+        case .loading, .unknown, .knocked:
+            return nil
         default:
-            roomDetails?.canonicalAlias
+            return roomDetails?.canonicalAlias
         }
     }
     
-    var avatar: RoomAvatar {
-        roomDetails?.avatar ?? .room(id: roomID, name: title, avatarURL: nil)
+    var avatar: RoomAvatar? {
+        if isDMInvite, let inviter = roomDetails?.inviter {
+            return .room(id: roomID, name: inviter.displayName, avatarURL: inviter.avatarURL)
+        } else if let avatar = roomDetails?.avatar {
+            return avatar
+        } else if let name = roomDetails?.name {
+            return .room(id: roomID, name: name, avatarURL: nil)
+        } else {
+            return nil
+        }
+    }
+    
+    var isDMInvite: Bool {
+        mode == .invited(isDM: true)
     }
 }
 
@@ -80,4 +99,6 @@ enum JoinRoomScreenViewAction {
     case join
     case acceptInvite
     case declineInvite
+    case forget
+    case dismiss
 }

ElementX/Sources/Screens/JoinRoomScreen/JoinRoomScreenViewModel.swift

@@ -57,10 +57,14 @@ class JoinRoomScreenViewModel: JoinRoomScreenViewModelType, JoinRoomScreenViewMo
             Task { await joinRoom() }
         case .acceptInvite:
             Task { await joinRoom() }
+        case .forget:
+            Task { await forgetRoom() }
         case .declineInvite:
             showDeclineInviteConfirmationAlert()
         case .cancelKnock:
             showCancelKnockConfirmationAlert()
+        case .dismiss:
+            actionsSubject.send(.dismiss)
         }
     }
     
@@ -132,12 +136,20 @@ class JoinRoomScreenViewModel: JoinRoomScreenViewModelType, JoinRoomScreenViewMo
         }
 
         let info = roomPreview?.info ?? roomInfo
+        let avatar: RoomAvatar? = if let avatar = info?.avatar {
+            avatar
+        } else if let displayName = info?.displayName {
+            .room(id: roomID, name: displayName, avatarURL: nil)
+        } else {
+            nil
+        }
         state.roomDetails = JoinRoomScreenRoomDetails(name: info?.displayName,
                                                       topic: info?.topic,
                                                       canonicalAlias: info?.canonicalAlias,
-                                                      avatar: info?.avatar ?? .room(id: roomID, name: info?.displayName ?? "", avatarURL: nil),
-                                                      memberCount: info?.joinedMembersCount ?? 0,
-                                                      inviter: inviter)
+                                                      avatar: avatar,
+                                                      memberCount: info?.joinedMembersCount,
+                                                      inviter: inviter,
+                                                      isDirect: info?.isDirect)
         
         await updateMode()
     }
@@ -153,7 +165,7 @@ class JoinRoomScreenViewModel: JoinRoomScreenViewModelType, JoinRoomScreenViewMo
             
             switch roomPreview.info.membership {
             case .invited:
-                state.mode = .invited
+                state.mode = .invited(isDM: state.roomDetails?.isDirect == true && state.roomDetails?.memberCount == 1)
             case .knocked:
                 state.mode = .knocked
             case .banned:
@@ -174,7 +186,7 @@ class JoinRoomScreenViewModel: JoinRoomScreenViewModelType, JoinRoomScreenViewMo
         } else if let room {
             switch room {
             case .invited:
-                state.mode = .invited
+                state.mode = .invited(isDM: state.roomDetails?.isDirect == true && state.roomDetails?.memberCount == 1)
             case .knocked:
                 state.mode = .knocked
             case .banned:
@@ -198,16 +210,26 @@ class JoinRoomScreenViewModel: JoinRoomScreenViewModelType, JoinRoomScreenViewMo
             case .success:
                 actionsSubject.send(.joined)
             case .failure(let error):
-                MXLog.error("Failed joining room alias: \(alias) with error: \(error)")
-                userIndicatorController.submitIndicator(.init(title: L10n.errorUnknown))
+                if case .forbiddenAccess = error {
+                    MXLog.error("Failed joining room alias: \(alias) forbidden access")
+                    state.mode = .forbidden
+                } else {
+                    MXLog.error("Failed joining room alias: \(alias) with error: \(error)")
+                    userIndicatorController.submitIndicator(.init(title: L10n.errorUnknown))
+                }
             }
         } else {
             switch await clientProxy.joinRoom(roomID, via: via) {
             case .success:
                 actionsSubject.send(.joined)
             case .failure(let error):
-                MXLog.error("Failed joining room id: \(roomID) with error: \(error)")
-                userIndicatorController.submitIndicator(.init(title: L10n.errorUnknown))
+                if case .forbiddenAccess = error {
+                    MXLog.error("Failed joining room id: \(roomID) forbidden access")
+                    state.mode = .forbidden
+                } else {
+                    MXLog.error("Failed joining room id: \(roomID) with error: \(error)")
+                    userIndicatorController.submitIndicator(.init(title: L10n.errorUnknown))
+                }
             }
         }
     }
@@ -242,7 +264,7 @@ class JoinRoomScreenViewModel: JoinRoomScreenViewModelType, JoinRoomScreenViewMo
             }
         }
     }
-    
+        
     private func showDeclineInviteConfirmationAlert() {
         guard let roomDetails = state.roomDetails else {
             userIndicatorController.submitIndicator(.init(title: L10n.errorUnknown))
@@ -307,6 +329,27 @@ class JoinRoomScreenViewModel: JoinRoomScreenViewModelType, JoinRoomScreenViewMo
         }
     }
     
+    private func forgetRoom() async {
+        defer {
+            userIndicatorController.retractIndicatorWithId(roomID)
+        }
+        
+        userIndicatorController.submitIndicator(UserIndicator(id: roomID, type: .modal, title: L10n.commonLoading, persistent: true))
+        
+        guard case .banned = room, let roomPreview else {
+            userIndicatorController.submitIndicator(.init(title: L10n.errorUnknown))
+            return
+        }
+        
+        let result = await roomPreview.forgetRoom()
+        
+        if case .failure = result {
+            userIndicatorController.submitIndicator(.init(title: L10n.errorUnknown))
+        } else {
+            actionsSubject.send(.dismiss)
+        }
+    }
+    
     private static let loadingIndicatorIdentifier = "\(JoinRoomScreenViewModel.self)-Loading"
     
     private func showLoadingIndicator() {

ElementX/Sources/Screens/JoinRoomScreen/View/JoinRoomScreen.swift

@@ -50,10 +50,18 @@ struct JoinRoomScreen: View {
     @ViewBuilder
     private var defaultView: some View {
         VStack(spacing: 16) {
-            RoomAvatarImage(avatar: context.viewState.avatar,
-                            avatarSize: .room(on: .joinRoom),
-                            mediaProvider: context.mediaProvider)
-                .dynamicTypeSize(dynamicTypeSize < .accessibility1 ? dynamicTypeSize : .accessibility1)
+            if let avatar = context.viewState.avatar {
+                RoomAvatarImage(avatar: avatar,
+                                avatarSize: .room(on: .joinRoom),
+                                mediaProvider: context.mediaProvider)
+                    .dynamicTypeSize(dynamicTypeSize < .accessibility1 ? dynamicTypeSize : .accessibility1)
+            } else {
+                RoomAvatarImage(avatar: .room(id: "", name: nil, avatarURL: nil),
+                                avatarSize: .room(on: .joinRoom),
+                                mediaProvider: context.mediaProvider)
+                    .dynamicTypeSize(dynamicTypeSize < .accessibility1 ? dynamicTypeSize : .accessibility1)
+                    .hidden()
+            }
             
             VStack(spacing: 8) {
                 Text(context.viewState.title)
@@ -68,7 +76,7 @@ struct JoinRoomScreen: View {
                         .multilineTextAlignment(.center)
                 }
                 
-                if let memberCount = context.viewState.roomDetails?.memberCount {
+                if !context.viewState.isDMInvite, let memberCount = context.viewState.roomDetails?.memberCount {
                     BadgeLabel(title: "\(memberCount)", icon: \.userProfile, isHighlighted: false)
                 }
                 
@@ -174,12 +182,31 @@ struct JoinRoomScreen: View {
                 VStack(spacing: 16) { inviteButtons }
             }
         case .banned(let sender, let reason):
-            if let sender, let reason {
-                bottomErrorMessage(title: L10n.screenJoinRoomBanByMessage(sender),
-                                   subtitle: L10n.screenJoinRoomBanReason(reason))
-            } else {
-                bottomErrorMessage(title: L10n.screenJoinRoomBanMessage, subtitle: nil)
+            VStack(spacing: 24) {
+                if let sender, let reason {
+                    bottomErrorMessage(title: L10n.screenJoinRoomBanByMessage(sender),
+                                       subtitle: L10n.screenJoinRoomBanReason(reason))
+                } else {
+                    bottomErrorMessage(title: L10n.screenJoinRoomBanMessage, subtitle: nil)
+                }
+                
+                Button(L10n.screenJoinRoomForgetAction) {
+                    context.send(viewAction: .forget)
+                }
+                .buttonStyle(.compound(.primary))
             }
+        case .forbidden:
+            forbiddenView
+        }
+    }
+    
+    private var forbiddenView: some View {
+        VStack(spacing: 24) {
+            bottomErrorMessage(title: L10n.screenJoinRoomFailMessage, subtitle: L10n.screenJoinRoomFailReason)
+            Button(L10n.actionOk) {
+                context.send(viewAction: .dismiss)
+            }
+            .buttonStyle(.compound(.primary))
         }
     }
     
@@ -235,9 +262,11 @@ struct JoinRoomScreen: View {
     private var toolbar: some ToolbarContent {
         if context.viewState.mode == .knocked {
             ToolbarItem(placement: .principal) {
-                RoomHeaderView(roomName: context.viewState.title,
-                               roomAvatar: context.viewState.avatar,
-                               mediaProvider: context.mediaProvider)
+                if let avatar = context.viewState.avatar {
+                    RoomHeaderView(roomName: context.viewState.title,
+                                   roomAvatar: avatar,
+                                   mediaProvider: context.mediaProvider)
+                }
             }
         }
     }
@@ -250,30 +279,48 @@ struct JoinRoomScreen_Previews: PreviewProvider, TestablePreview {
     static let joinableViewModel = makeViewModel(mode: .joinable)
     static let restrictedViewModel = makeViewModel(mode: .restricted)
     static let inviteRequiredViewModel = makeViewModel(mode: .inviteRequired)
-    static let invitedViewModel = makeViewModel(mode: .invited)
+    static let invitedViewModel = makeViewModel(mode: .invited(isDM: false))
+    static let invitedDMViewModel = makeViewModel(mode: .invited(isDM: true))
     static let knockableViewModel = makeViewModel(mode: .knockable)
     static let knockedViewModel = makeViewModel(mode: .knocked)
     static let bannedViewModel = makeViewModel(mode: .banned(sender: "Bob", reason: "Spamming"))
+    static let forbiddenViewModel = makeViewModel(mode: .forbidden)
     
     static var previews: some View {
-        makePreview(viewModel: unknownViewModel, previewDisplayName: "Unknown")
-        makePreview(viewModel: joinableViewModel, previewDisplayName: "Joinable")
-        makePreview(viewModel: restrictedViewModel, previewDisplayName: "Restricted")
-        makePreview(viewModel: inviteRequiredViewModel, previewDisplayName: "InviteRequired")
-        makePreview(viewModel: invitedViewModel, previewDisplayName: "Invited")
-        makePreview(viewModel: knockableViewModel, previewDisplayName: "Knockable")
-        makePreview(viewModel: knockedViewModel, previewDisplayName: "Knocked")
-        makePreview(viewModel: bannedViewModel, previewDisplayName: "Banned")
+        makePreview(viewModel: unknownViewModel, mode: .unknown)
+        makePreview(viewModel: joinableViewModel, mode: .joinable)
+        makePreview(viewModel: restrictedViewModel, mode: .restricted)
+        makePreview(viewModel: inviteRequiredViewModel, mode: .inviteRequired)
+        makePreview(viewModel: invitedViewModel, mode: .invited(isDM: false))
+        makePreview(viewModel: invitedDMViewModel, mode: .invited(isDM: true))
+        makePreview(viewModel: knockableViewModel, mode: .knockable)
+        makePreview(viewModel: knockedViewModel, mode: .knocked)
+        makePreview(viewModel: bannedViewModel, mode: .banned(sender: nil, reason: nil))
+        makePreview(viewModel: forbiddenViewModel, mode: .forbidden)
     }
     
-    static func makePreview(viewModel: JoinRoomScreenViewModel, previewDisplayName: String) -> some View {
-        NavigationStack {
-            JoinRoomScreen(context: viewModel.context)
+    @ViewBuilder
+    static func makePreview(viewModel: JoinRoomScreenViewModel, mode: JoinRoomScreenMode) -> some View {
+        if mode == .forbidden {
+            NavigationStack {
+                JoinRoomScreen(context: viewModel.context)
+            }
+            .snapshotPreferences(expect: viewModel.context.$viewState.map { state in
+                state.mode == .forbidden
+            })
+            .onAppear {
+                forbiddenViewModel.context.send(viewAction: .join)
+            }
+            .previewDisplayName(mode.previewDisplayName)
+        } else {
+            NavigationStack {
+                JoinRoomScreen(context: viewModel.context)
+            }
+            .snapshotPreferences(expect: viewModel.context.$viewState.map { state in
+                state.roomDetails != nil
+            })
+            .previewDisplayName(mode.previewDisplayName)
         }
-        .snapshotPreferences(expect: viewModel.context.$viewState.map { state in
-            state.roomDetails != nil
-        })
-        .previewDisplayName(previewDisplayName)
     }
     
     static func makeViewModel(mode: JoinRoomScreenMode) -> JoinRoomScreenViewModel {
@@ -294,10 +341,17 @@ struct JoinRoomScreen_Previews: PreviewProvider, TestablePreview {
         case .inviteRequired:
             clientProxy.roomPreviewForIdentifierViaReturnValue = .success(RoomPreviewProxyMock.inviteRequired)
             clientProxy.roomForIdentifierReturnValue = nil
-        case .invited:
-            clientProxy.roomPreviewForIdentifierViaReturnValue = .success(RoomPreviewProxyMock.invited())
-            clientProxy.roomForIdentifierClosure = { _ in
-                .invited(InvitedRoomProxyMock(.init(avatarURL: .mockMXCAvatar)))
+        case .invited(let isDM):
+            if isDM {
+                clientProxy.roomPreviewForIdentifierViaReturnValue = .success(RoomPreviewProxyMock.inviteDM())
+                clientProxy.roomForIdentifierClosure = { _ in
+                    .invited(InvitedRoomProxyMock(.init(avatarURL: .mockMXCAvatar)))
+                }
+            } else {
+                clientProxy.roomPreviewForIdentifierViaReturnValue = .success(RoomPreviewProxyMock.invited())
+                clientProxy.roomForIdentifierClosure = { _ in
+                    .invited(InvitedRoomProxyMock(.init(avatarURL: .mockMXCAvatar)))
+                }
             }
         case .knockable:
             clientProxy.roomPreviewForIdentifierViaReturnValue = .success(RoomPreviewProxyMock.knockable)
@@ -312,6 +366,12 @@ struct JoinRoomScreen_Previews: PreviewProvider, TestablePreview {
             clientProxy.roomForIdentifierClosure = { _ in
                 .banned
             }
+        case .forbidden:
+            clientProxy.roomPreviewForIdentifierViaReturnValue = .success(RoomPreviewProxyMock.restricted)
+            clientProxy.roomForIdentifierReturnValue = nil
+            clientProxy.joinRoomAliasClosure = { _ in
+                .failure(.forbiddenAccess)
+            }
         default:
             break
         }
@@ -324,3 +384,30 @@ struct JoinRoomScreen_Previews: PreviewProvider, TestablePreview {
                                        userIndicatorController: ServiceLocator.shared.userIndicatorController)
     }
 }
+
+private extension JoinRoomScreenMode {
+    var previewDisplayName: String {
+        switch self {
+        case .unknown:
+            return "Unknown"
+        case .loading:
+            return "Loading"
+        case .joinable:
+            return "Joinable"
+        case .restricted:
+            return "Restricted"
+        case .inviteRequired:
+            return "InviteRequired"
+        case .invited(isDM: let isDM):
+            return isDM ? "InvitedDM" : "Invited"
+        case .knockable:
+            return "Knockable"
+        case .knocked:
+            return "Knocked"
+        case .banned:
+            return "Banned"
+        case .forbidden:
+            return "Forbidden"
+        }
+    }
+}

ElementX/Sources/Services/Client/ClientProxy.swift

@@ -413,6 +413,9 @@ class ClientProxy: ClientProxyProtocol {
             await waitForRoomToSync(roomID: roomID, timeout: .seconds(30))
             
             return .success(())
+        } catch ClientError.MatrixApi(.forbidden, _, _) {
+            MXLog.error("Failed joining roomAlias: \(roomID) forbidden")
+            return .failure(.forbiddenAccess)
         } catch {
             MXLog.error("Failed joining roomID: \(roomID) with error: \(error)")
             return .failure(.sdkError(error))
@@ -426,6 +429,9 @@ class ClientProxy: ClientProxyProtocol {
             await waitForRoomToSync(roomID: room.id(), timeout: .seconds(30))
             
             return .success(())
+        } catch ClientError.MatrixApi(.forbidden, _, _) {
+            MXLog.error("Failed joining roomAlias: \(roomAlias) forbidden")
+            return .failure(.forbiddenAccess)
         } catch {
             MXLog.error("Failed joining roomAlias: \(roomAlias) with error: \(error)")
             return .failure(.sdkError(error))

ElementX/Sources/Services/Client/ClientProxyProtocol.swift

@@ -30,6 +30,7 @@ enum ClientProxyLoadingState {
 
 enum ClientProxyError: Error {
     case sdkError(Error)
+    case forbiddenAccess
     
     case invalidMedia
     case invalidServerName

ElementX/Sources/Services/Room/RoomPreview/RoomPreviewProxy.swift

@@ -32,4 +32,14 @@ final class RoomPreviewProxy: RoomPreviewProxyProtocol {
                                               senderRoomMember: senderRoomMember)
         }
     }
+    
+    func forgetRoom() async -> Result<Void, RoomProxyError> {
+        do {
+            try await roomPreview.forget()
+            return .success(())
+        } catch {
+            MXLog.error("Failed forgetting the room with error: \(error)")
+            return .failure(.sdkError(error))
+        }
+    }
 }

ElementX/Sources/Services/Room/RoomPreview/RoomPreviewProxyProtocol.swift

@@ -11,4 +11,7 @@ import Foundation
 protocol RoomPreviewProxyProtocol {
     var info: RoomPreviewInfoProxy { get }
     var ownMembershipDetails: RoomMembershipDetailsProxyProtocol? { get async }
+    
+    /// Use this function to forget the room, should only be used if the current user membership is `banned`
+    func forgetRoom() async -> Result<Void, RoomProxyError>
 }

ElementX/Sources/Services/Room/RoomProxyProtocol.swift

@@ -22,8 +22,8 @@ enum RoomProxyType {
     case joined(JoinedRoomProxyProtocol)
     case invited(InvitedRoomProxyProtocol)
     case knocked(KnockedRoomProxyProtocol)
-    case left
     case banned
+    case left
 }
 
 // sourcery: AutoMockable