#1899, #1900, #1901 - Implement chat backup setting screens

ElementX/Sources/Screens/SecureBackup/SecureBackupKeyBackupScreen/SecureBackupKeyBackupScreenCoordinator.swift

@@ -0,0 +1,62 @@
+//
+// 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 SecureBackupKeyBackupScreenCoordinatorParameters {
+    let secureBackupController: SecureBackupControllerProtocol
+    weak var userIndicatorController: UserIndicatorControllerProtocol?
+}
+
+enum SecureBackupKeyBackupScreenCoordinatorAction {
+    case done
+}
+
+final class SecureBackupKeyBackupScreenCoordinator: CoordinatorProtocol {
+    private let parameters: SecureBackupKeyBackupScreenCoordinatorParameters
+    private var viewModel: SecureBackupKeyBackupScreenViewModelProtocol
+    private let actionsSubject: PassthroughSubject<SecureBackupKeyBackupScreenCoordinatorAction, Never> = .init()
+    private var cancellables = Set<AnyCancellable>()
+    
+    var actions: AnyPublisher<SecureBackupKeyBackupScreenCoordinatorAction, Never> {
+        actionsSubject.eraseToAnyPublisher()
+    }
+    
+    init(parameters: SecureBackupKeyBackupScreenCoordinatorParameters) {
+        self.parameters = parameters
+        
+        viewModel = SecureBackupKeyBackupScreenViewModel(secureBackupController: parameters.secureBackupController,
+                                                         userIndicatorController: parameters.userIndicatorController)
+    }
+    
+    func start() {
+        viewModel.actions.sink { [weak self] action in
+            MXLog.info("Coordinator: received view model action: \(action)")
+            
+            guard let self else { return }
+            switch action {
+            case .done:
+                self.actionsSubject.send(.done)
+            }
+        }
+        .store(in: &cancellables)
+    }
+        
+    func toPresentable() -> AnyView {
+        AnyView(SecureBackupKeyBackupScreen(context: viewModel.context))
+    }
+}

ElementX/Sources/Screens/SecureBackup/SecureBackupKeyBackupScreen/SecureBackupKeyBackupScreenModels.swift

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+//
+// 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
+
+enum SecureBackupKeyBackupScreenViewModelAction {
+    case done
+}
+
+enum SecureBackupKeyBackupScreenViewMode {
+    case disableBackup
+}
+
+struct SecureBackupKeyBackupScreenViewState: BindableState {
+    let mode: SecureBackupKeyBackupScreenViewMode
+    var bindings = SecureBackupKeyBackupScreenViewStateBindings()
+}
+
+struct SecureBackupKeyBackupScreenViewStateBindings {
+    var alertInfo: AlertInfo<UUID>?
+}
+
+var alertInfo: AlertInfo<UUID>?
+
+enum SecureBackupKeyBackupScreenViewAction {
+    case cancel
+    case toggleBackup
+}

ElementX/Sources/Screens/SecureBackup/SecureBackupKeyBackupScreen/SecureBackupKeyBackupScreenViewModel.swift

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+//
+// 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 SecureBackupKeyBackupScreenViewModelType = StateStoreViewModel<SecureBackupKeyBackupScreenViewState, SecureBackupKeyBackupScreenViewAction>
+
+class SecureBackupKeyBackupScreenViewModel: SecureBackupKeyBackupScreenViewModelType, SecureBackupKeyBackupScreenViewModelProtocol {
+    private let secureBackupController: SecureBackupControllerProtocol
+    
+    private var actionsSubject: PassthroughSubject<SecureBackupKeyBackupScreenViewModelAction, Never> = .init()
+    var actions: AnyPublisher<SecureBackupKeyBackupScreenViewModelAction, Never> {
+        actionsSubject.eraseToAnyPublisher()
+    }
+
+    init(secureBackupController: SecureBackupControllerProtocol, userIndicatorController: UserIndicatorControllerProtocol?) {
+        self.secureBackupController = secureBackupController
+        
+        super.init(initialViewState: .init(mode: secureBackupController.keyBackupState.value.viewMode))
+        
+        secureBackupController.keyBackupState
+            .receive(on: DispatchQueue.main)
+            .sink { [weak userIndicatorController] state in
+                let loadingIndicatorIdentifier = "SecureBackupKeyBackupScreenLoading"
+                switch state {
+                case .disabling, .enabling, .unknown:
+                    userIndicatorController?.submitIndicator(.init(id: loadingIndicatorIdentifier, type: .modal, title: L10n.commonLoading, persistent: true))
+                default:
+                    userIndicatorController?.retractIndicatorWithId(loadingIndicatorIdentifier)
+                }
+            }
+            .store(in: &cancellables)
+    }
+    
+    // MARK: - Public
+    
+    override func process(viewAction: SecureBackupKeyBackupScreenViewAction) {
+        MXLog.info("View model: received view action: \(viewAction)")
+        
+        switch viewAction {
+        case .cancel:
+            actionsSubject.send(.done)
+        case .toggleBackup:
+            guard secureBackupController.keyBackupState.value == .enabled else {
+                fatalError("Tried disabling backup when not enabled")
+            }
+            
+            state.bindings.alertInfo = .init(id: .init(),
+                                             title: L10n.screenKeyBackupDisableConfirmationTitle,
+                                             message: L10n.screenKeyBackupDisableConfirmationDescription,
+                                             primaryButton: .init(title: L10n.screenKeyBackupDisableConfirmationActionTurnOff, role: .destructive) { [weak self] in
+                                                 self?.disableBackup()
+                                             },
+                                             secondaryButton: .init(title: L10n.actionCancel, role: .cancel, action: nil))
+        }
+    }
+    
+    // MARK: - Private
+    
+    private func enableBackup() {
+        Task {
+            switch await secureBackupController.enableBackup() {
+            case .success:
+                actionsSubject.send(.done)
+            case .failure(let error):
+                MXLog.error("Failed enabling key backup with error: \(error)")
+                state.bindings.alertInfo = .init(id: .init())
+            }
+        }
+    }
+    
+    private func disableBackup() {
+        Task {
+            switch await secureBackupController.disableBackup() {
+            case .success:
+                actionsSubject.send(.done)
+            case .failure(let error):
+                MXLog.error("Failed disabling key backup with error: \(error)")
+                state.bindings.alertInfo = .init(id: .init())
+            }
+        }
+    }
+}
+
+extension SecureBackupKeyBackupState {
+    var viewMode: SecureBackupKeyBackupScreenViewMode {
+        guard self == .enabled else {
+            fatalError("Invalid key backup state")
+        }
+        
+        return .disableBackup
+    }
+}

ElementX/Sources/Screens/SecureBackup/SecureBackupKeyBackupScreen/SecureBackupKeyBackupScreenViewModelProtocol.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 SecureBackupKeyBackupScreenViewModelProtocol {
+    var actions: AnyPublisher<SecureBackupKeyBackupScreenViewModelAction, Never> { get }
+    var context: SecureBackupKeyBackupScreenViewModelType.Context { get }
+}

ElementX/Sources/Screens/SecureBackup/SecureBackupKeyBackupScreen/View/SecureBackupKeyBackupScreen.swift

@@ -0,0 +1,117 @@
+//
+// 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 Compound
+import SwiftUI
+
+struct SecureBackupKeyBackupScreen: View {
+    @ObservedObject var context: SecureBackupKeyBackupScreenViewModel.Context
+    
+    @ScaledMetric private var iconSize = 70
+    
+    var body: some View {
+        mainContent
+            .padding()
+            .interactiveDismissDisabled()
+            .toolbar { toolbar }
+            .background(Color.compound.bgCanvasDefault.ignoresSafeArea())
+            .alert(item: $context.alertInfo)
+    }
+    
+    @ViewBuilder
+    private var mainContent: some View {
+        switch context.viewState.mode {
+        case .disableBackup:
+            disableBackupSection
+        }
+    }
+        
+    private var disableBackupSection: some View {
+        VStack(spacing: 16) {
+            HeroImage(image: Image(asset: Asset.Images.secureBackupOff))
+            
+            Text(L10n.screenKeyBackupDisableTitle)
+                .foregroundColor(.compound.textPrimary)
+                .font(.compound.headingMDBold)
+                .multilineTextAlignment(.center)
+            
+            Text(L10n.screenKeyBackupDisableDescription)
+                .foregroundColor(.compound.textSecondary)
+                .font(.compound.bodyMD)
+                .multilineTextAlignment(.center)
+            
+            VStack(alignment: .leading) {
+                Label {
+                    Text(L10n.screenKeyBackupDisableDescriptionPoint1)
+                        .foregroundColor(.compound.textSecondary)
+                        .font(.compound.bodyMD)
+                } icon: {
+                    CompoundIcon(\.close)
+                        .foregroundColor(.compound.iconCriticalPrimary)
+                }
+                
+                Label {
+                    Text(L10n.screenKeyBackupDisableDescriptionPoint2(InfoPlistReader.main.bundleDisplayName))
+                        .foregroundColor(.compound.textSecondary)
+                        .font(.compound.bodyMD)
+                } icon: {
+                    CompoundIcon(\.close)
+                        .foregroundColor(.compound.iconCriticalPrimary)
+                }
+            }
+            
+            Spacer()
+            
+            Button(role: .destructive) {
+                context.send(viewAction: .toggleBackup)
+            } label: {
+                Text(L10n.screenChatBackupKeyBackupActionDisable)
+            }
+            .buttonStyle(.compound(.primary))
+        }
+    }
+    
+    @ToolbarContentBuilder
+    private var toolbar: some ToolbarContent {
+        ToolbarItem(placement: .cancellationAction) {
+            Button(L10n.actionCancel) {
+                context.send(viewAction: .cancel)
+            }
+        }
+    }
+}
+
+// MARK: - Previews
+
+struct SecureBackupKeyBackupScreen_Previews: PreviewProvider, TestablePreview {
+    static let setupViewModel = viewModel(keyBackupState: .enabled)
+    
+    static var previews: some View {
+        NavigationStack {
+            SecureBackupKeyBackupScreen(context: setupViewModel.context)
+        }
+        .previewDisplayName("Set up")
+    }
+    
+    static func viewModel(keyBackupState: SecureBackupKeyBackupState) -> SecureBackupKeyBackupScreenViewModelType {
+        let backupController = SecureBackupControllerMock()
+        backupController.underlyingKeyBackupState = CurrentValueSubject<SecureBackupKeyBackupState, Never>(keyBackupState).asCurrentValuePublisher()
+        
+        return SecureBackupKeyBackupScreenViewModel(secureBackupController: backupController,
+                                                    userIndicatorController: nil)
+    }
+}