mirror of
https://github.com/vector-im/element-ios.git
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106 lines
3.4 KiB
Swift
106 lines
3.4 KiB
Swift
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/*
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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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enum KeyBackupRecoverFromPassphraseViewModelError: Error {
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case missingKeyBackupVersion
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}
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final class KeyBackupRecoverFromPassphraseViewModel: KeyBackupRecoverFromPassphraseViewModelType {
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// MARK: - Properties
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// MARK: Private
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private let keyBackup: MXKeyBackup
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private var currentHTTPOperation: MXHTTPOperation?
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private let keyBackupVersion: MXKeyBackupVersion
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// MARK: Public
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var passphrase: String?
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var isFormValid: Bool {
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return self.passphrase?.isEmpty == false
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}
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weak var viewDelegate: KeyBackupRecoverFromPassphraseViewModelViewDelegate?
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weak var coordinatorDelegate: KeyBackupRecoverFromPassphraseViewModelCoordinatorDelegate?
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// MARK: - Setup
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init(keyBackup: MXKeyBackup, keyBackupVersion: MXKeyBackupVersion) {
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self.keyBackup = keyBackup
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self.keyBackupVersion = keyBackupVersion
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}
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deinit {
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self.currentHTTPOperation?.cancel()
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}
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// MARK: - Public
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func process(viewAction: KeyBackupRecoverFromPassphraseViewAction) {
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switch viewAction {
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case .recover:
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self.recoverWithPassphrase()
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case .cancel:
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self.coordinatorDelegate?.keyBackupRecoverFromPassphraseViewModelDidCancel(self)
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case .unknownPassphrase:
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self.coordinatorDelegate?.keyBackupRecoverFromPassphraseViewModelDoNotKnowPassphrase(self)
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}
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}
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// MARK: - Private
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private func recoverWithPassphrase() {
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guard let passphrase = self.passphrase else {
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return
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}
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guard let keyBackupVersion = self.keyBackupVersion.version else {
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self.update(viewState: .error(KeyBackupRecoverFromPassphraseViewModelError.missingKeyBackupVersion))
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return
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}
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self.update(viewState: .loading)
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self.currentHTTPOperation = self.keyBackup.restore(keyBackupVersion, withPassword: passphrase, room: nil, session: nil, success: { [weak self] (totalKeys, _) in
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guard let sself = self else {
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return
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}
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sself.update(viewState: .loaded(totalKeys: totalKeys))
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if totalKeys > 0 {
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DispatchQueue.main.async {
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sself.coordinatorDelegate?.keyBackupRecoverFromPassphraseViewModelDidRecover(sself)
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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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DispatchQueue.main.async {
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sself.update(viewState: .error(error))
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}
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})
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}
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private func update(viewState: KeyBackupRecoverFromPassphraseViewState) {
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self.viewDelegate?.keyBackupRecoverFromPassphraseViewModel(self, didUpdateViewState: viewState)
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}
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}
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