Files
letro-ios/ElementX/Sources/Screens/AppLock/AppLockSetupBiometricsScreen/AppLockSetupBiometricsScreenViewModel.swift
Doug 6918613195 Add a state machine to AppLockFlowCoordinator. (#2166)
Fixes a bug when cancelling Face ID would loop back round to presenting Face ID.
2023-11-24 16:03:38 +00:00

73 lines
2.6 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 AppLockSetupBiometricsScreenViewModelType = StateStoreViewModel<AppLockSetupBiometricsScreenViewState, AppLockSetupBiometricsScreenViewAction>
class AppLockSetupBiometricsScreenViewModel: AppLockSetupBiometricsScreenViewModelType, AppLockSetupBiometricsScreenViewModelProtocol {
private let appLockService: AppLockServiceProtocol
private var actionsSubject: PassthroughSubject<AppLockSetupBiometricsScreenViewModelAction, Never> = .init()
var actions: AnyPublisher<AppLockSetupBiometricsScreenViewModelAction, Never> {
actionsSubject.eraseToAnyPublisher()
}
init(appLockService: AppLockServiceProtocol) {
self.appLockService = appLockService
super.init(initialViewState: AppLockSetupBiometricsScreenViewState(biometryType: appLockService.biometryType))
}
// MARK: - Public
override func process(viewAction: AppLockSetupBiometricsScreenViewAction) {
MXLog.info("View model: received view action: \(viewAction)")
switch viewAction {
case .allow:
Task { await enableBiometricUnlock() }
case .skip:
disableBiometricUnlock()
}
}
// MARK: - Private
private func enableBiometricUnlock() async {
guard case .success = appLockService.enableBiometricUnlock() else {
MXLog.error("Enabling biometric unlock failed.")
return
}
MXLog.info("Biometric unlock enabled.")
// Attempt unlock to trigger Face ID permissions alert.
if appLockService.biometryType == .faceID,
await appLockService.unlockWithBiometrics() != .unlocked {
MXLog.info("Confirmation failed. Disabling biometric unlock.")
appLockService.disableBiometricUnlock()
}
actionsSubject.send(.continue)
}
private func disableBiometricUnlock() {
appLockService.disableBiometricUnlock()
MXLog.info("Biometric unlock disabled.")
actionsSubject.send(.continue)
}
}