Files
letro-ios/ElementX/Sources/Screens/SecureBackup/SecureBackupLogoutConfirmationScreen/SecureBackupLogoutConfirmationScreenViewModel.swift

102 lines
3.8 KiB
Swift

//
// Copyright 2022 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 Combine
import SwiftUI
typealias SecureBackupLogoutConfirmationScreenViewModelType = StateStoreViewModel<SecureBackupLogoutConfirmationScreenViewState, SecureBackupLogoutConfirmationScreenViewAction>
class SecureBackupLogoutConfirmationScreenViewModel: SecureBackupLogoutConfirmationScreenViewModelType, SecureBackupLogoutConfirmationScreenViewModelProtocol {
private let secureBackupController: SecureBackupControllerProtocol
private let networkMonitor: NetworkMonitorProtocol
@CancellableTask
private var keyUploadWaitingTask: Task<Void, Never>?
private var actionsSubject: PassthroughSubject<SecureBackupLogoutConfirmationScreenViewModelAction, Never> = .init()
var actions: AnyPublisher<SecureBackupLogoutConfirmationScreenViewModelAction, Never> {
actionsSubject.eraseToAnyPublisher()
}
init(secureBackupController: SecureBackupControllerProtocol, networkMonitor: NetworkMonitorProtocol) {
self.secureBackupController = secureBackupController
self.networkMonitor = networkMonitor
super.init(initialViewState: .init(mode: .saveRecoveryKey))
networkMonitor.reachabilityPublisher
.receive(on: DispatchQueue.main)
.sink { [weak self] reachability in
guard let self,
state.mode != .saveRecoveryKey else {
return
}
if reachability == .reachable {
state.mode = .backupOngoing
} else {
state.mode = .offline
}
}
.store(in: &cancellables)
}
// MARK: - Public
override func process(viewAction: SecureBackupLogoutConfirmationScreenViewAction) {
MXLog.info("View model: received view action: \(viewAction)")
switch viewAction {
case .cancel:
keyUploadWaitingTask = nil
actionsSubject.send(.cancel)
case .settings:
actionsSubject.send(.settings)
case .logout:
attemptLogout()
}
}
// MARK: - Private
private func attemptLogout() {
if state.mode == .saveRecoveryKey {
state.mode = networkMonitor.reachabilityPublisher.value == .reachable ? .backupOngoing : .offline
keyUploadWaitingTask = Task {
var result = await secureBackupController.waitForKeyBackupUpload()
if case .failure = result {
// Retry the upload first, conditions might have changed.
result = await secureBackupController.waitForKeyBackupUpload()
}
guard case .success = result else {
MXLog.error("Aborting logout due to failure waiting for backup upload.")
state.bindings.alertInfo = .init(id: .backupUploadFailed)
return
}
guard !Task.isCancelled else { return }
actionsSubject.send(.logout)
}
} else {
actionsSubject.send(.logout)
}
}
}