element-x-ios/ElementX/Sources/Services/UserSession/UserSessionFlowCoordinator....

305 lines
14 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 SwiftUI
enum UserSessionFlowCoordinatorAction {
case signOut
}
class UserSessionFlowCoordinator: CoordinatorProtocol {
private let stateMachine: UserSessionFlowCoordinatorStateMachine
private let userSession: UserSessionProtocol
private let navigationSplitCoordinator: NavigationSplitCoordinator
private let bugReportService: BugReportServiceProtocol
private let roomTimelineControllerFactory: RoomTimelineControllerFactoryProtocol
private let emojiProvider: EmojiProviderProtocol = EmojiProvider()
private let sidebarNavigationStackCoordinator: NavigationStackCoordinator
private let detailNavigationStackCoordinator: NavigationStackCoordinator
var callback: ((UserSessionFlowCoordinatorAction) -> Void)?
init(userSession: UserSessionProtocol,
navigationSplitCoordinator: NavigationSplitCoordinator,
bugReportService: BugReportServiceProtocol,
roomTimelineControllerFactory: RoomTimelineControllerFactoryProtocol) {
stateMachine = UserSessionFlowCoordinatorStateMachine()
self.userSession = userSession
self.navigationSplitCoordinator = navigationSplitCoordinator
self.bugReportService = bugReportService
self.roomTimelineControllerFactory = roomTimelineControllerFactory
sidebarNavigationStackCoordinator = NavigationStackCoordinator(navigationSplitCoordinator: navigationSplitCoordinator)
detailNavigationStackCoordinator = NavigationStackCoordinator(navigationSplitCoordinator: navigationSplitCoordinator)
navigationSplitCoordinator.setSidebarCoordinator(sidebarNavigationStackCoordinator)
setupStateMachine()
}
func start() {
stateMachine.processEvent(.start)
}
func stop() { }
func isDisplayingRoomScreen(withRoomId roomId: String) -> Bool {
stateMachine.isDisplayingRoomScreen(withRoomId: roomId)
}
func tryDisplayingRoomScreen(roomId: String) {
stateMachine.processEvent(.selectRoom(roomId: roomId))
}
// MARK: - Private
// swiftlint:disable:next cyclomatic_complexity
private func setupStateMachine() {
stateMachine.addTransitionHandler { [weak self] context in
guard let self else { return }
switch (context.fromState, context.event, context.toState) {
case (.initial, .start, .roomList):
self.presentHomeScreen()
case(.roomList(let currentRoomId), .selectRoom, .roomList(let selectedRoomId)):
guard let selectedRoomId,
selectedRoomId != currentRoomId else {
return
}
self.presentRoomWithIdentifier(selectedRoomId)
case(.roomList, .deselectRoom, .roomList):
break
case (.roomList, .showSessionVerificationScreen, .sessionVerificationScreen):
self.presentSessionVerification()
case (.sessionVerificationScreen, .dismissedSessionVerificationScreen, .roomList):
break
case (.roomList, .showSettingsScreen, .settingsScreen):
self.presentSettingsScreen()
case (.settingsScreen, .dismissedSettingsScreen, .roomList):
break
case (.roomList, .feedbackScreen, .feedbackScreen):
self.presentFeedbackScreen()
case (.feedbackScreen, .dismissedFeedbackScreen, .roomList):
break
case (.roomList, .showStartChatScreen, .startChatScreen):
self.presentStartChat()
case (.startChatScreen, .dismissedStartChatScreen, .roomList):
break
default:
fatalError("Unknown transition: \(context)")
}
}
stateMachine.addErrorHandler { context in
fatalError("Failed transition with context: \(context)")
}
}
private func presentHomeScreen() {
userSession.clientProxy.startSync()
let parameters = HomeScreenCoordinatorParameters(userSession: userSession,
attributedStringBuilder: AttributedStringBuilder(),
bugReportService: bugReportService,
navigationStackCoordinator: detailNavigationStackCoordinator)
let coordinator = HomeScreenCoordinator(parameters: parameters)
coordinator.callback = { [weak self] action in
guard let self else { return }
switch action {
case .presentRoom(let roomIdentifier):
self.stateMachine.processEvent(.selectRoom(roomId: roomIdentifier))
case .presentSettingsScreen:
self.stateMachine.processEvent(.showSettingsScreen)
case .presentFeedbackScreen:
self.stateMachine.processEvent(.feedbackScreen)
case .presentSessionVerificationScreen:
self.stateMachine.processEvent(.showSessionVerificationScreen)
case .presentStartChatScreen:
self.stateMachine.processEvent(.showStartChatScreen)
case .signOut:
self.callback?(.signOut)
}
}
sidebarNavigationStackCoordinator.setRootCoordinator(coordinator)
}
// MARK: Rooms
private func presentRoomWithIdentifier(_ roomIdentifier: String) {
Task { @MainActor in
guard let roomProxy = await userSession.clientProxy.roomForIdentifier(roomIdentifier) else {
MXLog.error("Invalid room identifier: \(roomIdentifier)")
return
}
let userId = userSession.clientProxy.userID
let timelineItemFactory = RoomTimelineItemFactory(userID: userId,
mediaProvider: userSession.mediaProvider,
attributedStringBuilder: AttributedStringBuilder(),
stateEventStringBuilder: RoomStateEventStringBuilder(userID: userId))
let timelineController = roomTimelineControllerFactory.buildRoomTimelineController(userId: userId,
roomProxy: roomProxy,
timelineItemFactory: timelineItemFactory,
mediaProvider: userSession.mediaProvider)
let parameters = RoomScreenCoordinatorParameters(navigationStackCoordinator: detailNavigationStackCoordinator,
roomProxy: roomProxy,
timelineController: timelineController,
mediaProvider: userSession.mediaProvider,
emojiProvider: emojiProvider)
let coordinator = RoomScreenCoordinator(parameters: parameters)
coordinator.callback = { [weak self] action in
switch action {
case .leftRoom:
self?.dismissRoom()
}
}
detailNavigationStackCoordinator.setRootCoordinator(coordinator) { [weak self, roomIdentifier] in
guard let self else { return }
// Move the state machine to no room selected if the room currently being dimissed
// is the same as the one selected in the state machine.
// This generally happens when popping the room screen while in a compact layout
if case let .roomList(selectedRoomId) = self.stateMachine.state, selectedRoomId == roomIdentifier {
self.stateMachine.processEvent(.deselectRoom)
self.detailNavigationStackCoordinator.setRootCoordinator(nil)
}
}
if navigationSplitCoordinator.detailCoordinator == nil {
navigationSplitCoordinator.setDetailCoordinator(detailNavigationStackCoordinator)
}
}
}
private func dismissRoom() {
detailNavigationStackCoordinator.popToRoot(animated: true)
navigationSplitCoordinator.setDetailCoordinator(nil)
}
// MARK: Settings
private func presentSettingsScreen() {
let settingsNavigationStackCoordinator = NavigationStackCoordinator()
let userIndicatorController = UserIndicatorController(rootCoordinator: settingsNavigationStackCoordinator)
let parameters = SettingsScreenCoordinatorParameters(navigationStackCoordinator: settingsNavigationStackCoordinator,
userIndicatorController: userIndicatorController,
userSession: userSession,
bugReportService: bugReportService)
let settingsScreenCoordinator = SettingsScreenCoordinator(parameters: parameters)
settingsScreenCoordinator.callback = { [weak self] action in
guard let self else { return }
switch action {
case .dismiss:
self.navigationSplitCoordinator.setSheetCoordinator(nil)
case .logout:
self.navigationSplitCoordinator.setSheetCoordinator(nil)
self.callback?(.signOut)
}
}
settingsNavigationStackCoordinator.setRootCoordinator(settingsScreenCoordinator)
navigationSplitCoordinator.setSheetCoordinator(userIndicatorController) { [weak self] in
self?.stateMachine.processEvent(.dismissedSettingsScreen)
}
}
// MARK: Session verification
private func presentSessionVerification() {
guard let sessionVerificationController = userSession.sessionVerificationController else {
fatalError("The sessionVerificationController should aways be valid at this point")
}
let parameters = SessionVerificationCoordinatorParameters(sessionVerificationControllerProxy: sessionVerificationController)
let coordinator = SessionVerificationCoordinator(parameters: parameters)
coordinator.callback = { [weak self] in
self?.navigationSplitCoordinator.setSheetCoordinator(nil)
}
navigationSplitCoordinator.setSheetCoordinator(coordinator) { [weak self] in
self?.stateMachine.processEvent(.dismissedSessionVerificationScreen)
}
}
// MARK: Start Chat
private func presentStartChat() {
let startChatNavigationStackCoordinator = NavigationStackCoordinator()
let userIndicatorController = UserIndicatorController(rootCoordinator: startChatNavigationStackCoordinator)
let parameters = StartChatCoordinatorParameters(userSession: userSession)
let coordinator = StartChatCoordinator(parameters: parameters)
coordinator.callback = { [weak self] action in
guard let self else { return }
switch action {
case .close:
self.navigationSplitCoordinator.setSheetCoordinator(nil)
}
}
startChatNavigationStackCoordinator.setRootCoordinator(coordinator)
navigationSplitCoordinator.setSheetCoordinator(userIndicatorController) { [weak self] in
self?.stateMachine.processEvent(.dismissedStartChatScreen)
}
}
// MARK: Bug reporting
private func presentFeedbackScreen(for image: UIImage? = nil) {
let feedbackNavigationStackCoordinator = NavigationStackCoordinator()
let userIndicatorController = UserIndicatorController(rootCoordinator: feedbackNavigationStackCoordinator)
let parameters = BugReportCoordinatorParameters(bugReportService: bugReportService,
userID: userSession.userID,
deviceID: userSession.deviceID,
userIndicatorController: userIndicatorController,
screenshot: image,
isModallyPresented: true)
let coordinator = BugReportCoordinator(parameters: parameters)
coordinator.completion = { [weak self] _ in
self?.navigationSplitCoordinator.setSheetCoordinator(nil)
}
feedbackNavigationStackCoordinator.setRootCoordinator(coordinator)
navigationSplitCoordinator.setSheetCoordinator(userIndicatorController) { [weak self] in
self?.stateMachine.processEvent(.dismissedFeedbackScreen)
}
}
}