Secrets recovery: Add SecretRecoveryCoordinator.

Riot/Modules/SecretsRecovery/SecretsRecoveryCoordinator.swift

@@ -0,0 +1,136 @@
+/*
+ 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
+
+enum SecretsRecoveryMode {
+    case passphraseOrKey
+    case onlyKey
+}
+
+final class SecretsRecoveryCoordinator: SecretsRecoveryCoordinatorType {
+    
+    // MARK: - Properties
+    
+    // MARK: Private
+    
+    private let session: MXSession
+    private let navigationRouter: NavigationRouterType
+    private let recoveryMode: SecretsRecoveryMode
+    
+    // MARK: Public
+    
+    var childCoordinators: [Coordinator] = []
+    
+    weak var delegate: SecretsRecoveryCoordinatorDelegate?
+    
+    // MARK: - Setup
+    
+    init(session: MXSession, recoveryMode: SecretsRecoveryMode, navigationRouter: NavigationRouterType? = nil) {
+        self.session = session
+        self.recoveryMode = recoveryMode
+        
+        if let navigationRouter = navigationRouter {
+            self.navigationRouter = navigationRouter
+        } else {
+            self.navigationRouter = NavigationRouter(navigationController: RiotNavigationController())
+        }
+    }
+    
+    // MARK: - Public
+    
+    func start() {
+        
+        let rootCoordinator: Coordinator & Presentable
+        
+        switch self.recoveryMode {
+        case .onlyKey:
+            rootCoordinator = self.createRecoverFromKeyCoordinator()
+        case .passphraseOrKey:
+            rootCoordinator = self.createRecoverFromPassphraseCoordinator()
+        }
+        
+        rootCoordinator.start()
+        
+        self.add(childCoordinator: rootCoordinator)
+        
+        if self.navigationRouter.modules.isEmpty == false {
+            self.navigationRouter.push(rootCoordinator, animated: true, popCompletion: { [weak self] in
+                self?.remove(childCoordinator: rootCoordinator)
+            })
+        } else {
+            self.navigationRouter.setRootModule(rootCoordinator) { [weak self] in
+                self?.remove(childCoordinator: rootCoordinator)
+            }
+        }
+    }
+    
+    func toPresentable() -> UIViewController {
+        return self.navigationRouter.toPresentable()
+    }
+    
+    // MARK: - Private
+    
+    private func createRecoverFromKeyCoordinator() -> SecretsRecoveryWithKeyCoordinator {
+        let coordinator = SecretsRecoveryWithKeyCoordinator(recoveryService: self.session.crypto.recoveryService)
+        coordinator.delegate = self
+        return coordinator
+    }
+    
+    private func createRecoverFromPassphraseCoordinator() -> SecretsRecoveryWithPassphraseCoordinator {
+        let coordinator = SecretsRecoveryWithPassphraseCoordinator(recoveryService: self.session.crypto.recoveryService)
+        coordinator.delegate = self
+        return coordinator
+    }
+    
+    private func showRecoverFromKeyCoordinator() {
+        let coordinator = self.createRecoverFromKeyCoordinator()
+        coordinator.start()
+        
+        self.navigationRouter.push(coordinator.toPresentable(), animated: true, popCompletion: { [weak self] in
+            self?.remove(childCoordinator: coordinator)
+        })
+        self.add(childCoordinator: coordinator)
+    }
+}
+
+// MARK: - SecretsRecoveryWithKeyCoordinatorDelegate
+extension SecretsRecoveryCoordinator: SecretsRecoveryWithKeyCoordinatorDelegate {
+    
+    func secretsRecoveryWithKeyCoordinatorDidRecover(_ coordinator: SecretsRecoveryWithKeyCoordinatorType) {
+        self.delegate?.secretsRecoveryCoordinatorDidRecover(self)
+    }
+    
+    func secretsRecoveryWithKeyCoordinatorDidCancel(_ coordinator: SecretsRecoveryWithKeyCoordinatorType) {
+        self.delegate?.secretsRecoveryCoordinatorDidCancel(self)
+    }
+}
+
+// MARK: - SecretsRecoveryWithPassphraseCoordinatorDelegate
+extension SecretsRecoveryCoordinator: SecretsRecoveryWithPassphraseCoordinatorDelegate {
+    
+    func secretsRecoveryWithPassphraseCoordinatorDidRecover(_ coordinator: SecretsRecoveryWithPassphraseCoordinatorType) {
+        self.delegate?.secretsRecoveryCoordinatorDidRecover(self)
+    }
+    
+    func secretsRecoveryWithPassphraseCoordinatorDoNotKnowPassphrase(_ coordinator: SecretsRecoveryWithPassphraseCoordinatorType) {
+        self.showRecoverFromKeyCoordinator()
+    }
+    
+    func secretsRecoveryWithPassphraseCoordinatorDidCancel(_ coordinator: SecretsRecoveryWithPassphraseCoordinatorType) {
+        self.delegate?.secretsRecoveryCoordinatorDidCancel(self)
+    }
+}

Riot/Modules/SecretsRecovery/SecretsRecoveryCoordinatorType.swift

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+/*
+ 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 SecretsRecoveryCoordinatorDelegate: class {
+    func secretsRecoveryCoordinatorDidRecover(_ coordinator: SecretsRecoveryCoordinatorType)
+    func secretsRecoveryCoordinatorDidCancel(_ coordinator: SecretsRecoveryCoordinatorType)
+}
+
+/// `SecretsRecoveryCoordinatorType` is a protocol describing a Coordinator that handle secrets recovery navigation flow.
+protocol SecretsRecoveryCoordinatorType: Coordinator, Presentable {
+    var delegate: SecretsRecoveryCoordinatorDelegate? { get }
+}