Secure key backup: Handle secure key backup flow.

Riot/Modules/KeyBackup/SecureSetup/SecureKeyBackupSetupCoordinator.swift

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+// File created from FlowTemplate
+// $ createRootCoordinator.sh KeyBackupSetup/SecureSetup SecureKeyBackupSetup
+/*
+ Copyright 2020 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 UIKit
+
+@objcMembers
+final class SecureKeyBackupSetupCoordinator: SecureKeyBackupSetupCoordinatorType {
+    
+    // MARK: - Properties
+    
+    // MARK: Private
+    
+    private let navigationRouter: NavigationRouterType
+    private let recoveryService: MXRecoveryService
+    
+    // MARK: Public
+
+    // Must be used only internally
+    var childCoordinators: [Coordinator] = []
+    
+    weak var delegate: SecureKeyBackupSetupCoordinatorDelegate?
+    
+    // MARK: - Setup
+    
+    init(session: MXSession) {
+        self.navigationRouter = NavigationRouter(navigationController: RiotNavigationController())
+        self.recoveryService = session.crypto.recoveryService
+    }    
+    
+    // MARK: - Public methods
+    
+    func start() {
+        let rootViewController = self.createIntro()
+        self.navigationRouter.setRootModule(rootViewController)
+    }
+    
+    func toPresentable() -> UIViewController {
+        return self.navigationRouter.toPresentable()
+    }
+    
+    // MARK: - Private methods
+
+    private func createIntro() -> SecureKeyBackupSetupIntroViewController {
+        let introViewController = SecureKeyBackupSetupIntroViewController.instantiate()
+        introViewController.delegate = self
+        return introViewController
+    }
+    
+    private func showSetupKey(passphrase: String? = nil) {
+        let coordinator = SecretsSetupRecoveryKeyCoordinator(recoveryService: self.recoveryService, passphrase: passphrase)
+        coordinator.delegate = self
+        coordinator.start()
+        
+        self.add(childCoordinator: coordinator)
+        self.navigationRouter.push(coordinator, animated: true) { [weak self] in
+            self?.remove(childCoordinator: coordinator)
+        }
+    }
+    
+    private func showSetupPassphrase() {
+        let coordinator = SecretsSetupRecoveryPassphraseCoordinator(passphraseInput: .new)
+        coordinator.delegate = self
+        coordinator.start()
+
+        self.add(childCoordinator: coordinator)
+        self.navigationRouter.push(coordinator, animated: true) { [weak self] in
+            self?.remove(childCoordinator: coordinator)
+        }
+    }
+    
+    private func showSetupPassphraseConfirmation(with passphrase: String) {
+        let coordinator = SecretsSetupRecoveryPassphraseCoordinator(passphraseInput: .confirm(passphrase))
+        coordinator.delegate = self
+        coordinator.start()
+        
+        self.add(childCoordinator: coordinator)
+        self.navigationRouter.push(coordinator, animated: true) { [weak self] in
+            self?.remove(childCoordinator: coordinator)
+        }
+    }
+    
+    private func showCancelAlert() {
+        let alertController = UIAlertController(title: VectorL10n.secureKeyBackupSetupCancelAlertTitle,
+                                                message: VectorL10n.secureKeyBackupSetupCancelAlertMessage,
+                                                preferredStyle: .alert)
+        
+        alertController.addAction(UIAlertAction(title: VectorL10n.continue, style: .cancel, handler: { action in
+        }))
+        
+        alertController.addAction(UIAlertAction(title: VectorL10n.keyBackupSetupSkipAlertSkipAction, style: .default, handler: { action in
+            self.delegate?.secureKeyBackupSetupCoordinatorDidCancel(self)
+        }))
+        
+        self.navigationRouter.present(alertController, animated: true)
+    }
+    
+    private func didCancel(showSkipAlert: Bool = true) {
+        if showSkipAlert {
+            self.showCancelAlert()
+        } else {
+            self.delegate?.secureKeyBackupSetupCoordinatorDidCancel(self)
+        }
+    }
+    
+    private func didComplete() {
+        self.delegate?.secureKeyBackupSetupCoordinatorDidComplete(self)
+    }
+}
+
+// MARK: - SecureKeyBackupSetupIntroViewControllerDelegate
+extension SecureKeyBackupSetupCoordinator: SecureKeyBackupSetupIntroViewControllerDelegate {
+    
+    func secureKeyBackupSetupIntroViewControllerDidTapUseKey(_ secureKeyBackupSetupIntroViewController: SecureKeyBackupSetupIntroViewController) {
+        self.showSetupKey()
+    }
+    
+    func secureKeyBackupSetupIntroViewControllerDidTapUsePassphrase(_ secureKeyBackupSetupIntroViewController: SecureKeyBackupSetupIntroViewController) {
+        self.showSetupPassphrase()
+    }
+    
+    func secureKeyBackupSetupIntroViewControllerDidCancel(_ secureKeyBackupSetupIntroViewController: SecureKeyBackupSetupIntroViewController) {
+        self.didCancel()
+    }
+}
+
+// MARK: - SecretsSetupRecoveryKeyCoordinatorDelegate
+extension SecureKeyBackupSetupCoordinator: SecretsSetupRecoveryKeyCoordinatorDelegate {
+    
+    func secretsSetupRecoveryKeyCoordinatorDidComplete(_ coordinator: SecretsSetupRecoveryKeyCoordinatorType) {
+        self.didComplete()
+    }
+    
+    func secretsSetupRecoveryKeyCoordinatorDidFailed(_ coordinator: SecretsSetupRecoveryKeyCoordinatorType) {
+        self.didCancel(showSkipAlert: false)
+    }
+    
+    func secretsSetupRecoveryKeyCoordinatorDidCancel(_ coordinator: SecretsSetupRecoveryKeyCoordinatorType) {
+        self.didCancel()
+    }
+}
+
+// MARK: - SecretsSetupRecoveryPassphraseCoordinatorDelegate
+extension SecureKeyBackupSetupCoordinator: SecretsSetupRecoveryPassphraseCoordinatorDelegate {
+    
+    func secretsSetupRecoveryPassphraseCoordinator(_ coordinator: SecretsSetupRecoveryPassphraseCoordinatorType, didEnterNewPassphrase passphrase: String) {
+        self.showSetupPassphraseConfirmation(with: passphrase)
+    }
+    
+    func secretsSetupRecoveryPassphraseCoordinator(_ coordinator: SecretsSetupRecoveryPassphraseCoordinatorType, didConfirmPassphrase passphrase: String) {
+        self.showSetupKey(passphrase: passphrase)
+    }
+    
+    func secretsSetupRecoveryPassphraseCoordinatorDidCancel(_ coordinator: SecretsSetupRecoveryPassphraseCoordinatorType) {
+        self.didCancel()
+    }
+}

Riot/Modules/KeyBackup/SecureSetup/SecureKeyBackupSetupCoordinatorBridgePresenter.swift

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+// File created from FlowTemplate
+// $ createRootCoordinator.sh KeyBackupSetup/SecureSetup SecureKeyBackupSetup
+/*
+ Copyright 2020 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
+
+@objc protocol SecureKeyBackupSetupCoordinatorBridgePresenterDelegate {
+    func secureKeyBackupSetupCoordinatorBridgePresenterDelegateDidComplete(_ coordinatorBridgePresenter: SecureKeyBackupSetupCoordinatorBridgePresenter)
+    func secureKeyBackupSetupCoordinatorBridgePresenterDelegateDidCancel(_ coordinatorBridgePresenter: SecureKeyBackupSetupCoordinatorBridgePresenter)
+}
+
+/// SecureKeyBackupSetupCoordinatorBridgePresenter enables to start SecureKeyBackupSetupCoordinator from a view controller.
+/// This bridge is used while waiting for global usage of coordinator pattern.
+@objcMembers
+final class SecureKeyBackupSetupCoordinatorBridgePresenter: NSObject {
+    
+    // MARK: - Properties
+    
+    // MARK: Private
+    
+    private let session: MXSession
+    private var coordinator: SecureKeyBackupSetupCoordinator?
+    
+    // MARK: Public
+    
+    weak var delegate: SecureKeyBackupSetupCoordinatorBridgePresenterDelegate?
+    
+    // MARK: - Setup
+    
+    init(session: MXSession) {
+        self.session = session
+        super.init()
+    }
+    
+    // MARK: - Public
+    
+    // NOTE: Default value feature is not compatible with Objective-C.
+    // func present(from viewController: UIViewController, animated: Bool) {
+    //     self.present(from: viewController, animated: animated)
+    // }
+    
+    func present(from viewController: UIViewController, animated: Bool) {
+        let secureKeyBackupSetupCoordinator = SecureKeyBackupSetupCoordinator(session: self.session)
+        secureKeyBackupSetupCoordinator.delegate = self
+        viewController.present(secureKeyBackupSetupCoordinator.toPresentable(), animated: animated, completion: nil)
+        secureKeyBackupSetupCoordinator.start()
+        
+        self.coordinator = secureKeyBackupSetupCoordinator
+    }
+    
+    func dismiss(animated: Bool, completion: (() -> Void)?) {
+        guard let coordinator = self.coordinator else {
+            return
+        }
+        coordinator.toPresentable().dismiss(animated: animated) {
+            self.coordinator = nil
+
+            if let completion = completion {
+                completion()
+            }
+        }
+    }
+}
+
+// MARK: - SecureKeyBackupSetupCoordinatorDelegate
+extension SecureKeyBackupSetupCoordinatorBridgePresenter: SecureKeyBackupSetupCoordinatorDelegate {
+    func secureKeyBackupSetupCoordinatorDidComplete(_ coordinator: SecureKeyBackupSetupCoordinatorType) {
+        self.delegate?.secureKeyBackupSetupCoordinatorBridgePresenterDelegateDidComplete(self)
+    }
+    
+    func secureKeyBackupSetupCoordinatorDidCancel(_ coordinator: SecureKeyBackupSetupCoordinatorType) {
+        self.delegate?.secureKeyBackupSetupCoordinatorBridgePresenterDelegateDidCancel(self)
+    }
+}

Riot/Modules/KeyBackup/SecureSetup/SecureKeyBackupSetupCoordinatorType.swift

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+// File created from FlowTemplate
+// $ createRootCoordinator.sh KeyBackupSetup/SecureSetup SecureKeyBackupSetup
+/*
+ Copyright 2020 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
+
+protocol SecureKeyBackupSetupCoordinatorDelegate: class {
+    func secureKeyBackupSetupCoordinatorDidComplete(_ coordinator: SecureKeyBackupSetupCoordinatorType)
+    func secureKeyBackupSetupCoordinatorDidCancel(_ coordinator: SecureKeyBackupSetupCoordinatorType)
+}
+
+/// `SecureKeyBackupSetupCoordinatorType` is a protocol describing a Coordinator that handle keybackup setup navigation flow.
+protocol SecureKeyBackupSetupCoordinatorType: Coordinator, Presentable {
+    var delegate: SecureKeyBackupSetupCoordinatorDelegate? { get }
+}