Secrets recover: Move files.

Riot/Modules/Secrets/Recover/RecoverWithPassphrase/SecretsRecoveryWithPassphraseViewModel.swift

@@ -0,0 +1,106 @@
+/*
+ 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
+
+final class SecretsRecoveryWithPassphraseViewModel: SecretsRecoveryWithPassphraseViewModelType {
+    
+    // MARK: - Properties
+    
+    // MARK: Private
+    
+    private let recoveryService: MXRecoveryService
+    
+    // MARK: Public
+    
+    let recoveryGoal: SecretsRecoveryGoal
+    
+    var passphrase: String?
+    
+    var isFormValid: Bool {
+        return self.passphrase?.isEmpty == false
+    }
+    
+    weak var viewDelegate: SecretsRecoveryWithPassphraseViewModelViewDelegate?
+    weak var coordinatorDelegate: SecretsRecoveryWithPassphraseViewModelCoordinatorDelegate?
+    
+    // MARK: - Setup
+    
+    init(recoveryService: MXRecoveryService, recoveryGoal: SecretsRecoveryGoal) {
+        self.recoveryService = recoveryService
+        self.recoveryGoal = recoveryGoal
+    }
+    
+    // MARK: - Public
+    
+    func process(viewAction: SecretsRecoveryWithPassphraseViewAction) {
+        switch viewAction {
+        case .recover:
+            self.recoverWithPassphrase()
+        case .cancel:
+            self.coordinatorDelegate?.secretsRecoveryWithPassphraseViewModelDidCancel(self)
+        case .useRecoveryKey:
+            self.coordinatorDelegate?.secretsRecoveryWithPassphraseViewModelWantsToRecoverByKey(self)
+        }
+    }
+    
+    // MARK: - Private
+    
+    private func recoverWithPassphrase() {
+        guard let passphrase = self.passphrase else {
+            return
+        }
+        
+        self.update(viewState: .loading)
+        
+        self.recoveryService.privateKey(fromPassphrase: passphrase, success: { [weak self] privateKey in
+            guard let self = self else {
+                return
+            }
+            
+            let secretIds: [String]?
+            
+            if case SecretsRecoveryGoal.keyBackup = self.recoveryGoal {
+                secretIds = [MXSecretId.keyBackup.takeUnretainedValue() as String]
+            } else {
+                secretIds = nil
+            }
+            
+            self.recoveryService.recoverSecrets(secretIds, withPrivateKey: privateKey, recoverServices: true, success: { [weak self] _ in
+                guard let self = self else {
+                    return
+                }
+                self.update(viewState: .loaded)
+                self.coordinatorDelegate?.secretsRecoveryWithPassphraseViewModelDidRecover(self)
+            }, failure: { [weak self] error in
+                guard let self = self else {
+                    return
+                }
+                self.update(viewState: .error(error))
+            })
+            
+        }, failure: { [weak self] error in
+            guard let self = self else {
+                return
+            }
+            self.update(viewState: .error(error))
+        })
+    }
+    
+    private func update(viewState: SecretsRecoveryWithPassphraseViewState) {
+        self.viewDelegate?.secretsRecoveryWithPassphraseViewModel(self, didUpdateViewState: viewState)
+    }
+}