mirror of
https://github.com/vector-im/element-ios.git
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138 lines
4.6 KiB
Swift
138 lines
4.6 KiB
Swift
/*
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Copyright 2019 New Vector Ltd
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import Foundation
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final class KeyBackupSetupPassphraseViewModel: KeyBackupSetupPassphraseViewModelType {
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// MARK: - Properties
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// MARK: Private
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private(set) var passphraseStrength: PasswordStrength = .tooGuessable
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private let passwordStrengthManager: PasswordStrengthManager
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private let keyBackup: MXKeyBackup
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private let coordinatorDelegateQueue: OperationQueue
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// MARK: Public
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var passphrase: String? {
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didSet {
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self.updatePassphraseStrength()
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}
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}
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var confirmPassphrase: String?
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var isPassphraseValid: Bool {
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return self.passphraseStrength == .veryUnguessable
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}
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var isConfirmPassphraseValid: Bool {
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guard self.isPassphraseValid, let confirmPassphrase = self.confirmPassphrase else {
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return false
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}
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return confirmPassphrase == passphrase
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}
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var isFormValid: Bool {
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return self.isPassphraseValid && self.isConfirmPassphraseValid
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}
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weak var viewDelegate: KeyBackupSetupPassphraseViewModelViewDelegate?
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weak var coordinatorDelegate: KeyBackupSetupPassphraseViewModelCoordinatorDelegate?
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// MARK: - Setup
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init(keyBackup: MXKeyBackup) {
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self.passwordStrengthManager = PasswordStrengthManager()
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self.keyBackup = keyBackup
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let coordinatorDelegateQueue = OperationQueue()
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coordinatorDelegateQueue.name = "KeyBackupSetupPassphraseViewModel.coordinatorDelegateQueue"
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coordinatorDelegateQueue.maxConcurrentOperationCount = 1
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self.coordinatorDelegateQueue = coordinatorDelegateQueue
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}
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// MARK: - Public
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func process(viewAction: KeyBackupSetupPassphraseViewAction) {
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switch viewAction {
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case .setupPassphrase:
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self.setupPassphrase()
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case .skip:
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self.pauseCoordinatorOperations()
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self.viewDelegate?.keyBackupSetupPassphraseViewModelShowSkipAlert(self)
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case.skipAlertContinue:
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self.resumeCoordinatorOperations()
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case.skipAlertSkip:
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self.cancelCoordinatorOperations()
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self.coordinatorDelegate?.keyBackupSetupPassphraseViewModelDidCancel(self)
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}
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}
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// MARK: - Private
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func setupPassphrase() {
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guard let passphrase = self.passphrase else {
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return
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}
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self.viewDelegate?.keyBackupSetupPassphraseViewModel(self, didUpdateViewState: .loading)
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self.keyBackup.prepareKeyBackupVersion(withPassword: passphrase, success: { [weak self] (megolmBackupCreationInfo) in
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guard let sself = self else {
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return
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}
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sself.viewDelegate?.keyBackupSetupPassphraseViewModel(sself, didUpdateViewState: .loaded)
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sself.coordinatorDelegateQueue.addOperation {
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DispatchQueue.main.async {
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sself.coordinatorDelegate?.keyBackupSetupPassphraseViewModel(sself, didCompleteWithMegolmBackupCreationInfo: megolmBackupCreationInfo)
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}
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}
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}, failure: { [weak self] error in
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guard let sself = self else {
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return
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}
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sself.viewDelegate?.keyBackupSetupPassphraseViewModel(sself, didUpdateViewState: .error(error))
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})
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}
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private func updatePassphraseStrength() {
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self.passphraseStrength = self.passwordStrength(for: self.passphrase)
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}
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private func passwordStrength(for password: String?) -> PasswordStrength {
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guard let password = password else {
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return .tooGuessable
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}
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return self.passwordStrengthManager.passwordStrength(for: password)
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}
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private func pauseCoordinatorOperations() {
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self.coordinatorDelegateQueue.isSuspended = true
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}
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private func resumeCoordinatorOperations() {
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self.coordinatorDelegateQueue.isSuspended = false
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}
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private func cancelCoordinatorOperations() {
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self.coordinatorDelegateQueue.cancelAllOperations()
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}
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}
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