110 lines
3.9 KiB
Swift
110 lines
3.9 KiB
Swift
// File created from ScreenTemplate
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// $ createScreen.sh .KeyBackup/Recover/PrivateKey KeyBackupRecoverFromPrivateKey
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/*
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Copyright 2020 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 KeyBackupRecoverFromPrivateKeyViewModel: KeyBackupRecoverFromPrivateKeyViewModelType {
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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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private var progressUpdateTimer: Timer?
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// MARK: Public
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weak var viewDelegate: KeyBackupRecoverFromPrivateKeyViewModelViewDelegate?
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weak var coordinatorDelegate: KeyBackupRecoverFromPrivateKeyViewModelCoordinatorDelegate?
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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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// MARK: - Public
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func process(viewAction: KeyBackupRecoverFromPrivateKeyViewAction) {
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switch viewAction {
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case .recover:
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self.recoverWithPrivateKey()
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case .cancel:
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self.coordinatorDelegate?.keyBackupRecoverFromPrivateKeyViewModelDidCancel(self)
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}
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}
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// MARK: - Private
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private func recoverWithPrivateKey() {
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self.update(viewState: .loading(0))
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// Update loading progress every second until no longer loading
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progressUpdateTimer = Timer.scheduledTimer(withTimeInterval: 1, repeats: true) { [weak self] _ in
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if let progress = self?.keyBackup.importProgress {
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self?.update(viewState: .loading(progress.fractionCompleted))
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}
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}
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self.currentHTTPOperation = keyBackup.restore(usingPrivateKeyKeyBackup: keyBackupVersion, room: nil, session: nil, success: { [weak self] (_, _) in
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guard let self = self else {
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return
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}
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// Trust on decrypt
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self.currentHTTPOperation = self.keyBackup.trust(self.keyBackupVersion, trust: true, success: { [weak self] () in
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guard let self = self else {
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return
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}
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self.update(viewState: .loaded)
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self.coordinatorDelegate?.keyBackupRecoverFromPrivateKeyViewModelDidRecover(self)
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}, failure: { [weak self] error in
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self?.update(viewState: .error(error))
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})
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}, failure: { [weak self] error in
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guard let self = self else {
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return
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}
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if (error as NSError).domain == MXKeyBackupErrorDomain
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&& (error as NSError).code == Int(MXKeyBackupErrorInvalidOrMissingLocalPrivateKey.rawValue) {
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self.coordinatorDelegate?.keyBackupRecoverFromPrivateKeyViewModelDidPrivateKeyFail(self)
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} else {
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self.update(viewState: .error(error))
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}
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})
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}
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private func update(viewState: KeyBackupRecoverFromPrivateKeyViewState) {
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if case .loading = viewState {} else {
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progressUpdateTimer?.invalidate()
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progressUpdateTimer = nil
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}
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self.viewDelegate?.keyBackupRecoverFromPrivateKeyViewModel(self, didUpdateViewState: viewState)
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}
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}
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