element-x-ios/ElementX/Sources/Screens/Authentication/AuthenticationCoordinator.s...

142 lines
4.8 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 MatrixRustSDK
import UIKit
@MainActor
protocol AuthenticationCoordinatorDelegate: AnyObject {
func authenticationCoordinator(_ authenticationCoordinator: AuthenticationCoordinator,
didLoginWithSession userSession: UserSessionProtocol)
}
class AuthenticationCoordinator: Coordinator, Presentable {
private let authenticationService: AuthenticationServiceProxyProtocol
private let navigationRouter: NavigationRouter
private var indicatorPresenter: UserIndicatorTypePresenterProtocol
private var activityIndicator: UserIndicator?
var childCoordinators: [Coordinator] = []
weak var delegate: AuthenticationCoordinatorDelegate?
init(authenticationService: AuthenticationServiceProxyProtocol,
navigationRouter: NavigationRouter) {
self.authenticationService = authenticationService
self.navigationRouter = navigationRouter
indicatorPresenter = UserIndicatorTypePresenter(presentingViewController: navigationRouter.toPresentable())
}
func start() {
showSplashScreen()
}
func toPresentable() -> UIViewController {
navigationRouter.toPresentable()
}
// MARK: - Private
private func showSplashScreen() {
let coordinator = SplashScreenCoordinator()
coordinator.callback = { [weak self] action in
guard let self = self else { return }
switch action {
case .login:
Task { await self.startAuthentication() }
}
}
coordinator.start()
add(childCoordinator: coordinator)
navigationRouter.setRootModule(coordinator) { [weak self] in
self?.remove(childCoordinator: coordinator)
}
}
private func startAuthentication() async {
startLoading()
switch await authenticationService.configure(for: BuildSettings.defaultHomeserverAddress) {
case .success:
stopLoading()
showLoginScreen()
case .failure:
stopLoading()
showServerSelectionScreen()
}
}
private func showServerSelectionScreen() {
let parameters = ServerSelectionCoordinatorParameters(authenticationService: authenticationService,
hasModalPresentation: false)
let coordinator = ServerSelectionCoordinator(parameters: parameters)
coordinator.callback = { [weak self] action in
guard let self = self else { return }
switch action {
case .updated:
self.showLoginScreen()
case .dismiss:
MXLog.failure("[AuthenticationCoordinator] ServerSelectionScreen is requesting dismiss when part of a stack.")
}
}
coordinator.start()
add(childCoordinator: coordinator)
navigationRouter.push(coordinator) { [weak self] in
self?.remove(childCoordinator: coordinator)
}
}
private func showLoginScreen() {
let parameters = LoginCoordinatorParameters(authenticationService: authenticationService,
navigationRouter: navigationRouter)
let coordinator = LoginCoordinator(parameters: parameters)
coordinator.callback = { [weak self] action in
guard let self = self else { return }
switch action {
case .signedIn(let userSession):
self.delegate?.authenticationCoordinator(self, didLoginWithSession: userSession)
}
}
coordinator.start()
add(childCoordinator: coordinator)
navigationRouter.push(coordinator) { [weak self] in
self?.remove(childCoordinator: coordinator)
}
}
/// Show a blocking activity indicator.
private func startLoading() {
activityIndicator = indicatorPresenter.present(.loading(label: ElementL10n.loading, isInteractionBlocking: true))
}
/// Hide the currently displayed activity indicator.
private func stopLoading() {
activityIndicator = nil
}
}