New notifications section in settings (#1273)

ElementX.xcodeproj/project.pbxproj

@@ -61,6 +61,7 @@
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@@ -337,6 +339,7 @@
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@@ -492,6 +495,7 @@
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@@ -584,6 +588,7 @@
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@@ -598,6 +603,7 @@
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@@ -648,6 +654,7 @@
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+		E3AC72E3E58F364EF15C1CC7 /* NotificationSettingsScreenViewModelTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 514363244AE7D68080D44C6F /* NotificationSettingsScreenViewModelTests.swift */; };
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@@ -705,6 +712,7 @@
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@@ -822,6 +830,7 @@
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 		0F5567A7EF6F2AB9473236F6 /* DocumentPicker.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DocumentPicker.swift; sourceTree = "<group>"; };
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@@ -885,6 +894,7 @@
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 		227AC5D71A4CE43512062243 /* URL.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = URL.swift; sourceTree = "<group>"; };
+		2389732B0E115A999A069083 /* NotificationSettingsScreenCoordinator.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NotificationSettingsScreenCoordinator.swift; sourceTree = "<group>"; };
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@@ -956,6 +966,7 @@
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 		421E716C521F96D24ECE69B3 /* NoticeRoomTimelineItem.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NoticeRoomTimelineItem.swift; sourceTree = "<group>"; };
+		421FA93BCC2840E66E4F306F /* NotificationSettingsScreenViewModelProtocol.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NotificationSettingsScreenViewModelProtocol.swift; sourceTree = "<group>"; };
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@@ -970,6 +981,7 @@
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 		46C208DA43CE25D13E670F40 /* UITestsAppCoordinator.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = UITestsAppCoordinator.swift; sourceTree = "<group>"; };
+		46D560DDA3B20C82766ACFAD /* NotificationSettingsScreenViewModel.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NotificationSettingsScreenViewModel.swift; sourceTree = "<group>"; };
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 		471EB7D96AFEA8D787659686 /* EmoteRoomTimelineView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = EmoteRoomTimelineView.swift; sourceTree = "<group>"; };
 		47873756E45B46683D97DC32 /* LegalInformationScreenModels.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LegalInformationScreenModels.swift; sourceTree = "<group>"; };
@@ -998,6 +1010,7 @@
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 		50E31AB0E77BB70E2BC77463 /* MatrixUserShareLink.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MatrixUserShareLink.swift; sourceTree = "<group>"; };
+		514363244AE7D68080D44C6F /* NotificationSettingsScreenViewModelTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NotificationSettingsScreenViewModelTests.swift; sourceTree = "<group>"; };
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@@ -1189,6 +1202,7 @@
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 		9CE3C90E487B255B735D73C8 /* RoomScreenViewModel.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RoomScreenViewModel.swift; sourceTree = "<group>"; };
+		9E685274772980BDEFF6691E /* UNUserNotificationCenter+Settings.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "UNUserNotificationCenter+Settings.swift"; sourceTree = "<group>"; };
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 		A00C7A331B72C0F05C00392F /* RoomScreenViewModelProtocol.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RoomScreenViewModelProtocol.swift; sourceTree = "<group>"; };
@@ -1262,6 +1276,7 @@
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 		B81B6170DB690013CEB646F4 /* MapLibreModels.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MapLibreModels.swift; sourceTree = "<group>"; };
+		B83BC0DC9A2DF2DD60F9B6E9 /* NotificationSettingsScreenUITests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NotificationSettingsScreenUITests.swift; sourceTree = "<group>"; };
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@@ -1301,6 +1316,7 @@
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+		C5F06F2F09B2EDD067DC2174 /* NotificationSettingsScreen.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NotificationSettingsScreen.swift; sourceTree = "<group>"; };
 		C616D90B1E2F033CAA325439 /* StaticLocationScreenViewModelProtocol.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = StaticLocationScreenViewModelProtocol.swift; sourceTree = "<group>"; };
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@@ -2326,6 +2342,7 @@
 			isa = PBXGroup;
 			children = (
 				C830A64609CBD152F06E0457 /* NotificationConstants.swift */,
+				A9E072BD31B744FC34F4D368 /* Helper */,
 				6EE5E2BBFBC7947CFE789B4D /* Manager */,
 				832FC81F760220239E285294 /* Proxy */,
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@@ -2349,6 +2366,7 @@
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 				1CA6CD0DE6F0445156361B6D /* DeveloperOptionsScreen */,
 				38A1C74493B816B8753F5BC2 /* LegalInformationScreen */,
+				7B91CB64534AD870924CCFEF /* NotificationSettingsScreen */,
 				B364E08924AD15820350CDD9 /* SettingsScreen */,
 			);
 			path = Settings;
@@ -2420,6 +2438,7 @@
 				F875D71347DC81EAE7687446 /* NavigationRootCoordinatorTests.swift */,
 				78913D6E120D46138E97C107 /* NavigationSplitCoordinatorTests.swift */,
 				9C698E30698EC59302A8EEBD /* NavigationStackCoordinatorTests.swift */,
+				514363244AE7D68080D44C6F /* NotificationSettingsScreenViewModelTests.swift */,
 				00A941F289F6AB876BA3361A /* OnboardingViewModelTests.swift */,
 				6FB31A32C93D94930B253FBF /* PermalinkBuilderTests.swift */,
 				086C19086DD16E9B38E25954 /* ReportContentViewModelTests.swift */,
@@ -2568,6 +2587,18 @@
 			path = View;
 			sourceTree = "<group>";
 		};
+		7B91CB64534AD870924CCFEF /* NotificationSettingsScreen */ = {
+			isa = PBXGroup;
+			children = (
+				2389732B0E115A999A069083 /* NotificationSettingsScreenCoordinator.swift */,
+				0F64447FF544298A6A3BEF85 /* NotificationSettingsScreenModels.swift */,
+				46D560DDA3B20C82766ACFAD /* NotificationSettingsScreenViewModel.swift */,
+				421FA93BCC2840E66E4F306F /* NotificationSettingsScreenViewModelProtocol.swift */,
+				BE7641A284D3E81DC96943E3 /* View */,
+			);
+			path = NotificationSettingsScreen;
+			sourceTree = "<group>";
+		};
 		7DBC911559934065993A5FF4 /* NotificationManager */ = {
 			isa = PBXGroup;
 			children = (
@@ -2792,6 +2823,7 @@
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 				59846FA04E1DBBFDD8829C2A /* MessageForwardingScreenUITests.swift */,
 				75910F5A36EA8FF9BAD08D18 /* MigrationScreenUITests.swift */,
+				B83BC0DC9A2DF2DD60F9B6E9 /* NotificationSettingsScreenUITests.swift */,
 				0C88046D6A070D9827181C4D /* OnboardingUITests.swift */,
 				4132F882A984ED971338EE9D /* ReportContentScreenUITests.swift */,
 				122186B7CD1BC46A9C629DD9 /* RoomDetailsEditScreenUITests.swift */,
@@ -2970,6 +3002,14 @@
 			path = View;
 			sourceTree = "<group>";
 		};
+		A9E072BD31B744FC34F4D368 /* Helper */ = {
+			isa = PBXGroup;
+			children = (
+				9E685274772980BDEFF6691E /* UNUserNotificationCenter+Settings.swift */,
+			);
+			path = Helper;
+			sourceTree = "<group>";
+		};
 		AAFDD509929A0CCF8BCE51EB /* Authentication */ = {
 			isa = PBXGroup;
 			children = (
@@ -3131,6 +3171,14 @@
 			path = ServerConfirmationScreen;
 			sourceTree = "<group>";
 		};
+		BE7641A284D3E81DC96943E3 /* View */ = {
+			isa = PBXGroup;
+			children = (
+				C5F06F2F09B2EDD067DC2174 /* NotificationSettingsScreen.swift */,
+			);
+			path = View;
+			sourceTree = "<group>";
+		};
 		C0937E3B06A8F0E2DB7C8241 /* Other */ = {
 			isa = PBXGroup;
 			children = (
@@ -4037,6 +4085,7 @@
 				69C7B956B74BEC3DB88224EA /* NavigationSplitCoordinatorTests.swift in Sources */,
 				4BB282209EA82015D0DF8F89 /* NavigationStackCoordinatorTests.swift in Sources */,
 				1B2DADC008EE211AF1DA5292 /* NotificationManagerTests.swift in Sources */,
+				E3AC72E3E58F364EF15C1CC7 /* NotificationSettingsScreenViewModelTests.swift in Sources */,
 				F9F6D2883BBEBB9A3789A137 /* OnboardingViewModelTests.swift in Sources */,
 				27E9263DA75E266690A37EB1 /* PermalinkBuilderTests.swift in Sources */,
 				D415764645491F10344FC6AC /* Publisher.swift in Sources */,
@@ -4341,6 +4390,11 @@
 				CE9530A4CA661E090635C2F2 /* NotificationItemProxy.swift in Sources */,
 				652ACCF104A8CEF30788963C /* NotificationManager.swift in Sources */,
 				06D3942496E9E0E655F14D21 /* NotificationManagerProtocol.swift in Sources */,
+				6786C4B0936AC84D993B20BF /* NotificationSettingsScreen.swift in Sources */,
+				F6DFA23885980118AD7359C5 /* NotificationSettingsScreenCoordinator.swift in Sources */,
+				D12F440F7973F1489F61389D /* NotificationSettingsScreenModels.swift in Sources */,
+				7F7EA51A9A43125A8CB6AC90 /* NotificationSettingsScreenViewModel.swift in Sources */,
+				CBD2ABE4C1A47ECD99E1488E /* NotificationSettingsScreenViewModelProtocol.swift in Sources */,
 				9A4E3D5AA44B041DAC3A0D81 /* OIDCAuthenticationPresenter.swift in Sources */,
 				329571083B132E4941131835 /* OnboardingBackgroundImage.swift in Sources */,
 				2CB6787E25B11711518E9588 /* OnboardingCoordinator.swift in Sources */,
@@ -4530,6 +4584,7 @@
 				22882C710BC99EC34A5024A0 /* UITestsScreenIdentifier.swift in Sources */,
 				706289B086B0A6B0C211763F /* UITestsSignalling.swift in Sources */,
 				D02AA6208C7ACB9BE6332394 /* UNNotificationContent.swift in Sources */,
+				17780569FB41E9BAC60D4710 /* UNUserNotificationCenter+Settings.swift in Sources */,
 				071A017E415AD378F2961B11 /* URL.swift in Sources */,
 				90733645AE76FB33DAD28C2B /* URLSession.swift in Sources */,
 				18867F4F1C8991EEC56EA932 /* UTType.swift in Sources */,
@@ -4598,6 +4653,7 @@
 				7FB0BDE26838F1A92782D5E1 /* MediaUploadPreviewScreenUITests.swift in Sources */,
 				6713835120D94BAA8ED7E3E5 /* MessageForwardingScreenUITests.swift in Sources */,
 				51C240F4660F7269203A9B3A /* MigrationScreenUITests.swift in Sources */,
+				AF4232E6F08C3DB86FFA9BBD /* NotificationSettingsScreenUITests.swift in Sources */,
 				6B15FF984906AAFCF9DC4F58 /* OnboardingUITests.swift in Sources */,
 				BA0D3DDCEDD97502DAC4B6E9 /* ReportContentScreenUITests.swift in Sources */,
 				F16109A6F6DF03DA26D59233 /* RoomDetailsEditScreenUITests.swift in Sources */,

ElementX/Sources/Application/AppCoordinator.swift

@@ -133,12 +133,14 @@ class AppCoordinator: AppCoordinatorProtocol, AuthenticationCoordinatorDelegate,
     
     // MARK: - NotificationManagerDelegate
     
-    func authorizationStatusUpdated(_ service: NotificationManagerProtocol, granted: Bool) {
+    func registerForRemoteNotifications() {
-        if granted {
+        UIApplication.shared.registerForRemoteNotifications()
-            UIApplication.shared.registerForRemoteNotifications()
-        }
     }
     
+    func unregisterForRemoteNotifications() {
+        UIApplication.shared.unregisterForRemoteNotifications()
+    }
+        
     func shouldDisplayInAppNotification(_ service: NotificationManagerProtocol, content: UNNotificationContent) -> Bool {
         guard let roomId = content.roomID else {
             return true

ElementX/Sources/Application/AppSettings.swift

@@ -26,6 +26,7 @@ final class AppSettings {
         case migratedAccounts
         case timelineStyle
         case analyticsConsentState
+        case enableNotifications
         case enableInAppNotifications
         case pusherProfileTag
         case shouldCollapseRoomStateEvents
@@ -34,6 +35,7 @@ final class AppSettings {
         case locationEventsEnabled
         case shareLocationEnabled
         case hasShownWelcomeScreen
+        case notificationSettingsEnabled
     }
     
     private static var suiteName: String = InfoPlistReader.main.appGroupIdentifier
@@ -178,6 +180,9 @@ final class AppSettings {
     
     // MARK: - Notifications
 
+    @UserPreference(key: UserDefaultsKeys.enableNotifications, defaultValue: true, storageType: .userDefaults(store))
+    var enableNotifications
+
     @UserPreference(key: UserDefaultsKeys.enableInAppNotifications, defaultValue: true, storageType: .userDefaults(store))
     var enableInAppNotifications
 
@@ -218,4 +223,7 @@ final class AppSettings {
     
     @UserPreference(key: UserDefaultsKeys.shareLocationEnabled, defaultValue: false, storageType: .userDefaults(store))
     var shareLocationEnabled
+    
+    @UserPreference(key: UserDefaultsKeys.notificationSettingsEnabled, defaultValue: false, storageType: .userDefaults(store))
+    var notificationSettingsEnabled
 }

ElementX/Sources/Mocks/Generated/GeneratedMocks.swift

@@ -1317,4 +1317,86 @@ class UserIndicatorControllerMock: UserIndicatorControllerProtocol {
         }
     }
 }
+class UserNotificationCenterMock: UserNotificationCenterProtocol {
+    var delegate: UNUserNotificationCenterDelegate?
+
+    //MARK: - add
+
+    var addThrowableError: Error?
+    var addCallsCount = 0
+    var addCalled: Bool {
+        return addCallsCount > 0
+    }
+    var addReceivedRequest: UNNotificationRequest?
+    var addReceivedInvocations: [UNNotificationRequest] = []
+    var addClosure: ((UNNotificationRequest) async throws -> Void)?
+
+    func add(_ request: UNNotificationRequest) async throws {
+        if let error = addThrowableError {
+            throw error
+        }
+        addCallsCount += 1
+        addReceivedRequest = request
+        addReceivedInvocations.append(request)
+        try await addClosure?(request)
+    }
+    //MARK: - requestAuthorization
+
+    var requestAuthorizationOptionsThrowableError: Error?
+    var requestAuthorizationOptionsCallsCount = 0
+    var requestAuthorizationOptionsCalled: Bool {
+        return requestAuthorizationOptionsCallsCount > 0
+    }
+    var requestAuthorizationOptionsReceivedOptions: UNAuthorizationOptions?
+    var requestAuthorizationOptionsReceivedInvocations: [UNAuthorizationOptions] = []
+    var requestAuthorizationOptionsReturnValue: Bool!
+    var requestAuthorizationOptionsClosure: ((UNAuthorizationOptions) async throws -> Bool)?
+
+    func requestAuthorization(options: UNAuthorizationOptions) async throws -> Bool {
+        if let error = requestAuthorizationOptionsThrowableError {
+            throw error
+        }
+        requestAuthorizationOptionsCallsCount += 1
+        requestAuthorizationOptionsReceivedOptions = options
+        requestAuthorizationOptionsReceivedInvocations.append(options)
+        if let requestAuthorizationOptionsClosure = requestAuthorizationOptionsClosure {
+            return try await requestAuthorizationOptionsClosure(options)
+        } else {
+            return requestAuthorizationOptionsReturnValue
+        }
+    }
+    //MARK: - setNotificationCategories
+
+    var setNotificationCategoriesCallsCount = 0
+    var setNotificationCategoriesCalled: Bool {
+        return setNotificationCategoriesCallsCount > 0
+    }
+    var setNotificationCategoriesReceivedCategories: Set<UNNotificationCategory>?
+    var setNotificationCategoriesReceivedInvocations: [Set<UNNotificationCategory>] = []
+    var setNotificationCategoriesClosure: ((Set<UNNotificationCategory>) -> Void)?
+
+    func setNotificationCategories(_ categories: Set<UNNotificationCategory>) {
+        setNotificationCategoriesCallsCount += 1
+        setNotificationCategoriesReceivedCategories = categories
+        setNotificationCategoriesReceivedInvocations.append(categories)
+        setNotificationCategoriesClosure?(categories)
+    }
+    //MARK: - authorizationStatus
+
+    var authorizationStatusCallsCount = 0
+    var authorizationStatusCalled: Bool {
+        return authorizationStatusCallsCount > 0
+    }
+    var authorizationStatusReturnValue: UNAuthorizationStatus!
+    var authorizationStatusClosure: (() async -> UNAuthorizationStatus)?
+
+    func authorizationStatus() async -> UNAuthorizationStatus {
+        authorizationStatusCallsCount += 1
+        if let authorizationStatusClosure = authorizationStatusClosure {
+            return await authorizationStatusClosure()
+        } else {
+            return authorizationStatusReturnValue
+        }
+    }
+}
 // swiftlint:enable all

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

@@ -31,6 +31,7 @@ struct DeveloperOptionsScreenViewStateBindings {
     var isEncryptionSyncEnabled: Bool
     var locationEventsEnabled: Bool
     var shareLocationEnabled: Bool
+    var notificationSettingsEnabled: Bool
 }
 
 enum DeveloperOptionsScreenViewAction {
@@ -40,5 +41,6 @@ enum DeveloperOptionsScreenViewAction {
     case changedIsEncryptionSyncEnabled
     case changedLocationEventsEnabled
     case changedShareLocationEnabled
+    case changedNotificationSettingsEnabled
     case clearCache
 }

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

@@ -31,7 +31,8 @@ class DeveloperOptionsScreenViewModel: DeveloperOptionsScreenViewModelType, Deve
                                                                readReceiptsEnabled: appSettings.readReceiptsEnabled,
                                                                isEncryptionSyncEnabled: appSettings.isEncryptionSyncEnabled,
                                                                locationEventsEnabled: appSettings.locationEventsEnabled,
-                                                               shareLocationEnabled: appSettings.shareLocationEnabled)
+                                                               shareLocationEnabled: appSettings.shareLocationEnabled,
+                                                               notificationSettingsEnabled: appSettings.notificationSettingsEnabled)
         let state = DeveloperOptionsScreenViewState(bindings: bindings)
         
         super.init(initialViewState: state)
@@ -55,6 +56,8 @@ class DeveloperOptionsScreenViewModel: DeveloperOptionsScreenViewModelType, Deve
             appSettings.locationEventsEnabled = state.bindings.locationEventsEnabled
         case .changedShareLocationEnabled:
             appSettings.shareLocationEnabled = state.bindings.shareLocationEnabled
+        case .changedNotificationSettingsEnabled:
+            appSettings.notificationSettingsEnabled = state.bindings.notificationSettingsEnabled
         case .clearCache:
             callback?(.clearCache)
         }

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

@@ -66,6 +66,13 @@ struct DeveloperOptionsScreen: View {
                 .onChange(of: context.shareLocationEnabled) { _ in
                     context.send(viewAction: .changedShareLocationEnabled)
                 }
+                
+                Toggle(isOn: $context.notificationSettingsEnabled) {
+                    Text("Show notification settings")
+                }
+                .onChange(of: context.notificationSettingsEnabled) { _ in
+                    context.send(viewAction: .changedNotificationSettingsEnabled)
+                }
             }
             
             Section {

ElementX/Sources/Screens/Settings/NotificationSettingsScreen/NotificationSettingsScreenCoordinator.swift

@@ -0,0 +1,48 @@
+//
+// Copyright 2022 New Vector Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import Combine
+import SwiftUI
+
+struct NotificationSettingsScreenCoordinatorParameters {
+    let userNotificationCenter: UserNotificationCenterProtocol
+}
+
+enum NotificationSettingsScreenCoordinatorAction { }
+
+final class NotificationSettingsScreenCoordinator: CoordinatorProtocol {
+    private let parameters: NotificationSettingsScreenCoordinatorParameters
+    private var viewModel: NotificationSettingsScreenViewModelProtocol
+    private let actionsSubject: PassthroughSubject<NotificationSettingsScreenCoordinatorAction, Never> = .init()
+    private var cancellables: Set<AnyCancellable> = .init()
+    
+    var actions: AnyPublisher<NotificationSettingsScreenCoordinatorAction, Never> {
+        actionsSubject.eraseToAnyPublisher()
+    }
+    
+    init(parameters: NotificationSettingsScreenCoordinatorParameters) {
+        self.parameters = parameters
+        
+        viewModel = NotificationSettingsScreenViewModel(appSettings: ServiceLocator.shared.settings,
+                                                        userNotificationCenter: parameters.userNotificationCenter)
+    }
+    
+    func start() { }
+        
+    func toPresentable() -> AnyView {
+        AnyView(NotificationSettingsScreen(context: viewModel.context))
+    }
+}

ElementX/Sources/Screens/Settings/NotificationSettingsScreen/NotificationSettingsScreenModels.swift

@@ -0,0 +1,53 @@
+//
+// Copyright 2022 New Vector Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import Foundation
+import UIKit
+
+enum NotificationSettingsScreenViewModelAction { }
+
+struct NotificationSettingsScreenViewState: BindableState {
+    var bindings: NotificationSettingsScreenViewStateBindings
+    var strings = NotificationSettingsScreenStrings()
+    var isUserPermissionGranted: Bool?
+    
+    var showSystemNotificationsAlert: Bool {
+        bindings.enableNotifications && isUserPermissionGranted == false
+    }
+}
+
+struct NotificationSettingsScreenViewStateBindings {
+    var enableNotifications = false
+}
+
+struct NotificationSettingsScreenStrings {
+    let changeYourSystemSettings: AttributedString = {
+        let linkPlaceholder = "{link}"
+        var text = AttributedString(L10n.screenNotificationSettingsSystemNotificationsActionRequired(linkPlaceholder))
+        var linkString = AttributedString(L10n.screenNotificationSettingsSystemNotificationsActionRequiredContentLink)
+        // Note: On the simulator, `UIApplication.openNotificationSettingsURLString` opens the `Settings` application instead of the application's notification settings screen.
+        linkString.link = URL(string: UIApplication.openNotificationSettingsURLString)
+        linkString.bold()
+        text.replace(linkPlaceholder, with: linkString)
+        
+        return text
+    }()
+}
+
+enum NotificationSettingsScreenViewAction {
+    case linkClicked(url: URL)
+    case changedEnableNotifications
+}

ElementX/Sources/Screens/Settings/NotificationSettingsScreen/NotificationSettingsScreenViewModel.swift

@@ -0,0 +1,76 @@
+//
+// Copyright 2022 New Vector Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import Combine
+import SwiftUI
+
+typealias NotificationSettingsScreenViewModelType = StateStoreViewModel<NotificationSettingsScreenViewState, NotificationSettingsScreenViewAction>
+
+class NotificationSettingsScreenViewModel: NotificationSettingsScreenViewModelType, NotificationSettingsScreenViewModelProtocol {
+    private var actionsSubject: PassthroughSubject<NotificationSettingsScreenViewModelAction, Never> = .init()
+    private let appSettings: AppSettings
+    private let userNotificationCenter: UserNotificationCenterProtocol
+    
+    var actions: AnyPublisher<NotificationSettingsScreenViewModelAction, Never> {
+        actionsSubject.eraseToAnyPublisher()
+    }
+
+    init(appSettings: AppSettings, userNotificationCenter: UserNotificationCenterProtocol) {
+        self.appSettings = appSettings
+        self.userNotificationCenter = userNotificationCenter
+        let bindings = NotificationSettingsScreenViewStateBindings(enableNotifications: appSettings.enableNotifications)
+        super.init(initialViewState: NotificationSettingsScreenViewState(bindings: bindings))
+                
+        // Listen for changes to AppSettings.enableNotifications
+        appSettings.$enableNotifications
+            .weakAssign(to: \.state.bindings.enableNotifications, on: self)
+            .store(in: &cancellables)
+        
+        // Refresh authorization status uppon UIApplication.didBecomeActiveNotification notification
+        NotificationCenter.default.publisher(for: UIApplication.didBecomeActiveNotification)
+            .sink { [weak self] _ in
+                Task {
+                    await self?.readSystemAuthorizationStatus()
+                }
+            }
+            .store(in: &cancellables)
+        
+        Task {
+            await readSystemAuthorizationStatus()
+        }
+    }
+        
+    // MARK: - Public
+    
+    override func process(viewAction: NotificationSettingsScreenViewAction) {
+        switch viewAction {
+        case .linkClicked(let url):
+            MXLog.warning("Link clicked: \(url)")
+        case .changedEnableNotifications:
+            toggleNotifications()
+        }
+    }
+    
+    // MARK: - Private
+    
+    func readSystemAuthorizationStatus() async {
+        state.isUserPermissionGranted = await userNotificationCenter.authorizationStatus() == .authorized
+    }
+
+    func toggleNotifications() {
+        appSettings.enableNotifications.toggle()
+    }
+}

ElementX/Sources/Screens/Settings/NotificationSettingsScreen/NotificationSettingsScreenViewModelProtocol.swift

@@ -0,0 +1,23 @@
+//
+// Copyright 2022 New Vector Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import Combine
+
+@MainActor
+protocol NotificationSettingsScreenViewModelProtocol {
+    var actions: AnyPublisher<NotificationSettingsScreenViewModelAction, Never> { get }
+    var context: NotificationSettingsScreenViewModelType.Context { get }
+}

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

@@ -0,0 +1,88 @@
+//
+// Copyright 2022 New Vector Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import SwiftUI
+
+struct NotificationSettingsScreen: View {
+    @ObservedObject var context: NotificationSettingsScreenViewModel.Context
+    
+    var body: some View {
+        Form {
+            if context.viewState.showSystemNotificationsAlert {
+                userPermissionSection
+            }
+            enableNotificationSection
+        }
+        .compoundForm()
+        .navigationTitle(L10n.screenNotificationSettingsTitle)
+        .track(screen: .settingsNotifications)
+    }
+    
+    // MARK: - Private
+
+    private var userPermissionSection: some View {
+        Section {
+            HStack(alignment: .firstTextBaseline, spacing: 13) {
+                Image(systemName: "exclamationmark.circle.fill")
+                    .foregroundColor(.compound.iconTertiaryAlpha)
+                VStack(alignment: .leading, spacing: 2) {
+                    Text(L10n.screenNotificationSettingsSystemNotificationsTurnedOff)
+                        .font(.compound.bodyLG)
+                        .foregroundColor(.compound.textPrimary)
+                    Text(context.viewState.strings.changeYourSystemSettings)
+                        .font(.compound.bodySM)
+                        .foregroundColor(.compound.textSecondary)
+                        .tint(.compound.textPrimary)
+                        .environment(\.openURL, OpenURLAction { url in
+                            context.send(viewAction: .linkClicked(url: url))
+                            return .systemAction
+                        })
+                }
+                .padding(.vertical, 5)
+            }
+        }
+        .compoundFormSection()
+    }
+    
+    private var enableNotificationSection: some View {
+        Section {
+            Toggle(isOn: $context.enableNotifications) {
+                Text(L10n.screenNotificationSettingsEnableNotifications)
+            }
+            .toggleStyle(.compoundForm)
+            .onChange(of: context.enableNotifications) { _ in
+                context.send(viewAction: .changedEnableNotifications)
+            }
+        }
+        .compoundFormSection()
+    }
+}
+
+// MARK: - Previews
+
+struct NotificationSettingsScreen_Previews: PreviewProvider {
+    static let viewModel: NotificationSettingsScreenViewModel = {
+        let appSettings = AppSettings()
+        let notificationCenter = UserNotificationCenterMock()
+        notificationCenter.authorizationStatusReturnValue = .notDetermined
+        var viewModel = NotificationSettingsScreenViewModel(appSettings: appSettings, userNotificationCenter: notificationCenter)
+        return viewModel
+    }()
+
+    static var previews: some View {
+        NotificationSettingsScreen(context: viewModel.context)
+    }
+}

ElementX/Sources/Screens/Settings/SettingsScreen/SettingsScreenCoordinator.swift

@@ -59,6 +59,8 @@ final class SettingsScreenCoordinator: CoordinatorProtocol {
                 self.presentDeveloperOptions()
             case .logout:
                 self.callback?(.logout)
+            case .notifications:
+                self.presentNotificationSettings()
             }
         }
     }
@@ -136,4 +138,12 @@ final class SettingsScreenCoordinator: CoordinatorProtocol {
     private func showSuccess(label: String) {
         parameters.userIndicatorController?.submitIndicator(UserIndicator(title: label))
     }
+    
+    private func presentNotificationSettings() {
+        let notificationParameters = NotificationSettingsScreenCoordinatorParameters(
+            userNotificationCenter: UNUserNotificationCenter.current()
+        )
+        let coordinator = NotificationSettingsScreenCoordinator(parameters: notificationParameters)
+        parameters.navigationStackCoordinator?.push(coordinator)
+    }
 }

ElementX/Sources/Screens/Settings/SettingsScreen/SettingsScreenModels.swift

@@ -24,6 +24,7 @@ enum SettingsScreenViewModelAction {
     case about
     case sessionVerification
     case developerOptions
+    case notifications
     case logout
 }
 
@@ -34,6 +35,7 @@ struct SettingsScreenViewState: BindableState {
     var userAvatarURL: URL?
     var userDisplayName: String?
     var showSessionVerificationSection: Bool
+    var showNotificationSettings: Bool
     var showDeveloperOptions: Bool
 }
 
@@ -50,4 +52,5 @@ enum SettingsScreenViewAction {
     case logout
     case changedTimelineStyle
     case developerOptions
+    case notifications
 }

ElementX/Sources/Screens/Settings/SettingsScreen/SettingsScreenViewModel.swift

@@ -40,6 +40,7 @@ class SettingsScreenViewModel: SettingsScreenViewModelType, SettingsScreenViewMo
                                            deviceID: userSession.deviceID,
                                            userID: userSession.userID,
                                            showSessionVerificationSection: showSessionVerificationSection,
+                                           showNotificationSettings: appSettings.notificationSettingsEnabled,
                                            showDeveloperOptions: appSettings.canShowDeveloperOptions),
                    imageProvider: userSession.mediaProvider)
         
@@ -51,6 +52,10 @@ class SettingsScreenViewModel: SettingsScreenViewModelType, SettingsScreenViewMo
             .weakAssign(to: \.state.userAvatarURL, on: self)
             .store(in: &cancellables)
         
+        appSettings.$notificationSettingsEnabled
+            .weakAssign(to: \.state.showNotificationSettings, on: self)
+            .store(in: &cancellables)
+        
         Task {
             await userSession.clientProxy.loadUserAvatarURL()
         }
@@ -92,6 +97,8 @@ class SettingsScreenViewModel: SettingsScreenViewModelType, SettingsScreenViewMo
             callback?(.sessionVerification)
         case .changedTimelineStyle:
             appSettings.timelineStyle = state.bindings.timelineStyle
+        case .notifications:
+            callback?(.notifications)
         case .developerOptions:
             callback?(.developerOptions)
         }

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

@@ -113,6 +113,15 @@ struct SettingsScreen: View {
                 context.send(viewAction: .changedTimelineStyle)
             }
             
+            // Notifications
+            if context.viewState.showNotificationSettings {
+                Button { context.send(viewAction: .notifications) } label: {
+                    Label(L10n.screenNotificationSettingsTitle, systemImage: "bell")
+                }
+                .buttonStyle(.compoundForm(accessory: .navigationLink))
+                .accessibilityIdentifier("notificationsButton")
+            }
+            
             // Analytics
             Button { context.send(viewAction: .analytics) } label: {
                 Label(L10n.commonAnalytics, systemImage: "chart.bar")
@@ -194,6 +203,7 @@ struct SettingsScreen_Previews: PreviewProvider {
     static let viewModel = {
         let userSession = MockUserSession(clientProxy: MockClientProxy(userID: "@userid:example.com"),
                                           mediaProvider: MockMediaProvider())
+        ServiceLocator.shared.settings.notificationSettingsEnabled = true
         return SettingsScreenViewModel(userSession: userSession,
                                        appSettings: ServiceLocator.shared.settings)
     }()

ElementX/Sources/Services/Notification/Helper/UNUserNotificationCenter+Settings.swift

@@ -0,0 +1,24 @@
+//
+// Copyright 2023 New Vector Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import Foundation
+import UserNotifications
+
+extension UNUserNotificationCenter {
+    func authorizationStatus() async -> UNAuthorizationStatus {
+        await notificationSettings().authorizationStatus
+    }
+}

ElementX/Sources/Services/Notification/Manager/NotificationManager.swift

@@ -24,7 +24,9 @@ class NotificationManager: NSObject, NotificationManagerProtocol {
     private let appSettings: AppSettings
     
     private var userSession: UserSessionProtocol?
-
+    private var cancellables = Set<AnyCancellable>()
+    private var notificationsEnabled = false
+    
     init(notificationCenter: UserNotificationCenterProtocol,
          appSettings: AppSettings) {
         self.notificationCenter = notificationCenter
@@ -50,15 +52,35 @@ class NotificationManager: NSObject, NotificationManagerProtocol {
                                                     options: [])
         notificationCenter.setNotificationCategories([messageCategory, inviteCategory])
         notificationCenter.delegate = self
+        
+        notificationsEnabled = appSettings.enableNotifications
+        MXLog.info("[NotificationManager] app setting 'enableNotifications' is '\(notificationsEnabled)'")
+        
+        // Listen for changes to AppSettings.enableNotifications
+        appSettings.$enableNotifications
+            .sink { [weak self] newValue in
+                self?.enableNotifications(newValue)
+            }
+            .store(in: &cancellables)
+        
+        // Request authorization uppon UIApplication.didBecomeActiveNotification notification
+        NotificationCenter.default.publisher(for: UIApplication.didBecomeActiveNotification)
+            .sink { [weak self] _ in
+                self?.requestAuthorization()
+            }
+            .store(in: &cancellables)
     }
-
+    
     func requestAuthorization() {
+        guard appSettings.enableNotifications, !userSession.isNil else { return }
         Task {
             do {
-                let granted = try await notificationCenter.requestAuthorization(options: [.alert, .sound, .badge])
+                let permissionGranted = try await notificationCenter.requestAuthorization(options: [.alert, .sound, .badge])
-                MXLog.info("[NotificationManager] permission granted: \(granted)")
+                MXLog.info("[NotificationManager] permission granted: \(permissionGranted)")
                 await MainActor.run {
-                    self.delegate?.authorizationStatusUpdated(self, granted: granted)
+                    if permissionGranted {
+                        self.delegate?.registerForRemoteNotifications()
+                    }
                 }
             } catch {
                 MXLog.error("[NotificationManager] request authorization failed: \(error)")
@@ -136,6 +158,17 @@ class NotificationManager: NSObject, NotificationManagerProtocol {
         appSettings.pusherProfileTag = newTag
         return newTag
     }
+    
+    private func enableNotifications(_ enable: Bool) {
+        guard notificationsEnabled != enable else { return }
+        notificationsEnabled = enable
+        MXLog.info("[NotificationManager] app setting 'enableNotifications' changed to '\(enable)'")
+        if enable {
+            requestAuthorization()
+        } else {
+            delegate?.unregisterForRemoteNotifications()
+        }
+    }
 }
 
 // MARK: - UNUserNotificationCenterDelegate

ElementX/Sources/Services/Notification/Manager/NotificationManagerProtocol.swift

@@ -18,8 +18,6 @@ import Foundation
 import UserNotifications
 
 protocol NotificationManagerDelegate: AnyObject {
-    func authorizationStatusUpdated(_ service: NotificationManagerProtocol,
-                                    granted: Bool)
     func shouldDisplayInAppNotification(_ service: NotificationManagerProtocol,
                                         content: UNNotificationContent) -> Bool
     func notificationTapped(_ service: NotificationManagerProtocol,
@@ -27,6 +25,8 @@ protocol NotificationManagerDelegate: AnyObject {
     func handleInlineReply(_ service: NotificationManagerProtocol,
                            content: UNNotificationContent,
                            replyText: String) async
+    func registerForRemoteNotifications()
+    func unregisterForRemoteNotifications()
 }
 
 // MARK: - NotificationManagerProtocol

ElementX/Sources/Services/Notification/Manager/UserNotificationCenterProtocol.swift

@@ -22,4 +22,8 @@ protocol UserNotificationCenterProtocol: AnyObject {
     func add(_ request: UNNotificationRequest) async throws
     func requestAuthorization(options: UNAuthorizationOptions) async throws -> Bool
     func setNotificationCategories(_ categories: Set<UNNotificationCategory>)
+    func authorizationStatus() async -> UNAuthorizationStatus
 }
+
+// sourcery: AutoMockable
+extension UserNotificationCenterProtocol { }

ElementX/Sources/UITests/UITestsAppCoordinator.swift

@@ -191,6 +191,11 @@ class MockScreen: Identifiable {
                                                                            isModallyPresented: false))
             navigationStackCoordinator.setRootCoordinator(coordinator)
             return navigationStackCoordinator
+        case .notificationSettingsScreen:
+            let userNotificationCenter = UserNotificationCenterMock()
+            userNotificationCenter.authorizationStatusReturnValue = .denied
+            let parameters = NotificationSettingsScreenCoordinatorParameters(userNotificationCenter: userNotificationCenter)
+            return NotificationSettingsScreenCoordinator(parameters: parameters)
         case .onboarding:
             return OnboardingCoordinator()
         case .roomPlainNoAvatar:

ElementX/Sources/UITests/UITestsScreenIdentifier.swift

@@ -34,6 +34,7 @@ enum UITestsScreenIdentifier: String {
     case settings
     case bugReport
     case bugReportWithScreenshot
+    case notificationSettingsScreen
     case onboarding
     case roomPlainNoAvatar
     case roomEncryptedWithAvatar

UITests/Sources/NotificationSettingsScreenUITests.swift

@@ -0,0 +1,21 @@
+//
+// Copyright 2023 New Vector Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import ElementX
+import XCTest
+
+@MainActor
+class NotificationSettingsScreenUITests: XCTestCase { }

UnitTests/Sources/NotificationManager/NotificationManagerTests.swift

@@ -179,8 +179,12 @@ final class NotificationManagerTests: XCTestCase {
 }
 
 extension NotificationManagerTests: NotificationManagerDelegate {
-    func authorizationStatusUpdated(_ service: ElementX.NotificationManagerProtocol, granted: Bool) {
+    func registerForRemoteNotifications() {
-        authorizationStatusWasGranted = granted
+        authorizationStatusWasGranted = true
+    }
+    
+    func unregisterForRemoteNotifications() {
+        authorizationStatusWasGranted = false
     }
     
     func shouldDisplayInAppNotification(_ service: ElementX.NotificationManagerProtocol, content: UNNotificationContent) -> Bool {

UnitTests/Sources/NotificationManager/UserNotificationCenterSpy.swift

@@ -36,4 +36,9 @@ class UserNotificationCenterSpy: UserNotificationCenterProtocol {
     func setNotificationCategories(_ categories: Set<UNNotificationCategory>) {
         notificationCategoriesValue = categories
     }
+    
+    var authorizationStatusValue: UNAuthorizationStatus?
+    func authorizationStatus() async -> UNAuthorizationStatus {
+        authorizationStatusValue ?? UNAuthorizationStatus.denied
+    }
 }

UnitTests/Sources/NotificationSettingsScreenViewModelTests.swift

@@ -0,0 +1,50 @@
+//
+// Copyright 2023 New Vector Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import XCTest
+
+@testable import ElementX
+
+@MainActor
+class NotificationSettingsScreenViewModelTests: XCTestCase {
+    private var viewModel: NotificationSettingsScreenViewModelProtocol!
+    private var context: NotificationSettingsScreenViewModelType.Context!
+    private var appSettings: AppSettings!
+    private var userNotificationCenter: UserNotificationCenterMock!
+    
+    @MainActor override func setUpWithError() throws {
+        AppSettings.reset()
+        
+        userNotificationCenter = UserNotificationCenterMock()
+        userNotificationCenter.authorizationStatusReturnValue = .authorized
+        appSettings = AppSettings()
+        viewModel = NotificationSettingsScreenViewModel(appSettings: appSettings,
+                                                        userNotificationCenter: userNotificationCenter)
+        context = viewModel.context
+    }
+    
+    func testEnableNotifications() {
+        appSettings.enableNotifications = false
+        context.send(viewAction: .changedEnableNotifications)
+        XCTAssertTrue(appSettings.enableNotifications)
+    }
+    
+    func testOptOut() {
+        appSettings.enableNotifications = true
+        context.send(viewAction: .changedEnableNotifications)
+        XCTAssertFalse(appSettings.enableNotifications)
+    }
+}