Files
letro-ios/ElementX/Sources/Screens/RoomDetailsScreen/RoomDetailsScreenViewModel.swift

264 lines
11 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 RoomDetailsScreenViewModelType = StateStoreViewModel<RoomDetailsScreenViewState, RoomDetailsScreenViewAction>
class RoomDetailsScreenViewModel: RoomDetailsScreenViewModelType, RoomDetailsScreenViewModelProtocol {
private let accountUserID: String
private let roomProxy: RoomProxyProtocol
private let userIndicatorController: UserIndicatorControllerProtocol
private let notificationSettingsProxy: NotificationSettingsProxyProtocol
private var accountOwner: RoomMemberProxyProtocol? {
didSet { updatePowerLevelPermissions() }
}
private var dmRecipient: RoomMemberProxyProtocol?
var callback: ((RoomDetailsScreenViewModelAction) -> Void)?
init(accountUserID: String,
roomProxy: RoomProxyProtocol,
mediaProvider: MediaProviderProtocol,
userIndicatorController: UserIndicatorControllerProtocol,
notificationSettingsProxy: NotificationSettingsProxyProtocol,
appSettings: AppSettings) {
self.accountUserID = accountUserID
self.roomProxy = roomProxy
self.userIndicatorController = userIndicatorController
self.notificationSettingsProxy = notificationSettingsProxy
super.init(initialViewState: .init(roomId: roomProxy.id,
canonicalAlias: roomProxy.canonicalAlias,
isEncrypted: roomProxy.isEncrypted,
isDirect: roomProxy.isDirect,
permalink: roomProxy.permalink,
title: roomProxy.roomTitle,
topic: roomProxy.topic,
avatarURL: roomProxy.avatarURL,
joinedMembersCount: roomProxy.joinedMembersCount,
showNotificationSettings: appSettings.notificationSettingsEnabled,
notificationSettingsState: .loading,
bindings: .init()),
imageProvider: mediaProvider)
setupRoomSubscription()
fetchMembers()
setupNotificationSettingsSubscription()
fetchNotificationSettings()
}
// MARK: - Public
// swiftlint:disable:next cyclomatic_complexity
override func process(viewAction: RoomDetailsScreenViewAction) {
switch viewAction {
case .processTapPeople:
callback?(.requestMemberDetailsPresentation)
case .processTapInvite:
callback?(.requestInvitePeoplePresentation)
case .processTapLeave:
guard state.joinedMembersCount > 1 else {
state.bindings.leaveRoomAlertItem = LeaveRoomAlertItem(roomId: roomProxy.id, state: .empty)
return
}
state.bindings.leaveRoomAlertItem = LeaveRoomAlertItem(roomId: roomProxy.id, state: roomProxy.isPublic ? .public : .private)
case .confirmLeave:
Task { await leaveRoom() }
case .processTapIgnore:
state.bindings.ignoreUserRoomAlertItem = .init(action: .ignore)
case .processTapUnignore:
state.bindings.ignoreUserRoomAlertItem = .init(action: .unignore)
case .processTapEdit, .processTapAddTopic:
guard let accountOwner else {
MXLog.error("Missing account owner when presenting the room's edit details screen")
return
}
callback?(.requestEditDetailsPresentation(accountOwner))
case .ignoreConfirmed:
Task { await ignore() }
case .unignoreConfirmed:
Task { await unignore() }
case .processTapNotifications:
if state.notificationSettingsState.isError {
fetchNotificationSettings()
} else {
callback?(.requestNotificationSettingsPresentation)
}
case .processToogleMuteNotifications:
Task { await toggleMuteNotifications() }
}
}
// MARK: - Private
private func setupRoomSubscription() {
roomProxy.updatesPublisher
.throttle(for: .milliseconds(200), scheduler: DispatchQueue.main, latest: true)
.sink { [weak self] _ in
guard let self else { return }
self.state.title = self.roomProxy.roomTitle
self.state.topic = self.roomProxy.topic
self.state.avatarURL = self.roomProxy.avatarURL
self.state.joinedMembersCount = self.roomProxy.joinedMembersCount
}
.store(in: &cancellables)
}
private func fetchMembers() {
Task {
await fetchMembersIfNeeded()
await fetchAccountOwner()
}
}
private func fetchMembersIfNeeded() async {
// We need to fetch members just in 1-to-1 chat to get the member object for the other person
guard roomProxy.isEncryptedOneToOneRoom else {
return
}
roomProxy.membersPublisher
.sink { [weak self] members in
guard let self else { return }
let dmRecipient = members.first(where: { !$0.isAccountOwner })
self.dmRecipient = dmRecipient
self.state.dmRecipient = dmRecipient.map(RoomMemberDetails.init(withProxy:))
}
.store(in: &cancellables)
await roomProxy.updateMembers()
}
private func fetchAccountOwner() async {
switch await roomProxy.getMember(userID: accountUserID) {
case .success(let member):
accountOwner = member
case .failure(let error):
MXLog.error("Failed (error: \(error) to get account owner member with id: \(accountUserID), in room: \(roomProxy.id)")
}
}
private func updatePowerLevelPermissions() {
state.canInviteUsers = accountOwner?.canInviteUsers ?? false
state.canEditRoomName = accountOwner?.canSendStateEvent(type: .roomName) ?? false
state.canEditRoomTopic = accountOwner?.canSendStateEvent(type: .roomTopic) ?? false
state.canEditRoomAvatar = accountOwner?.canSendStateEvent(type: .roomAvatar) ?? false
}
private func setupNotificationSettingsSubscription() {
notificationSettingsProxy.callbacks
.receive(on: DispatchQueue.main)
.sink { [weak self] callback in
guard let self else { return }
switch callback {
case .settingsDidChange:
self.fetchNotificationSettings()
}
}
.store(in: &cancellables)
}
private func fetchNotificationSettings() {
Task {
await fetchRoomNotificationSettings()
}
}
private func fetchRoomNotificationSettings() async {
do {
let notificationMode = try await notificationSettingsProxy.getNotificationSettings(roomId: roomProxy.id,
isEncrypted: roomProxy.isEncrypted,
activeMembersCount: UInt64(roomProxy.activeMembersCount))
state.notificationSettingsState = .loaded(settings: notificationMode)
} catch {
state.notificationSettingsState = .error
state.bindings.alertInfo = AlertInfo(id: .alert,
title: L10n.commonError,
message: L10n.screenRoomDetailsErrorLoadingNotificationSettings)
}
}
private func toggleMuteNotifications() async {
guard case .loaded(let notificationMode) = state.notificationSettingsState else { return }
state.isProcessingMuteToggleAction = true
switch notificationMode.mode {
case .mute:
do {
try await notificationSettingsProxy.unmuteRoom(roomId: roomProxy.id,
isEncrypted: roomProxy.isEncrypted,
activeMembersCount: UInt64(roomProxy.activeMembersCount))
} catch {
state.bindings.alertInfo = AlertInfo(id: .alert,
title: L10n.commonError,
message: L10n.screenRoomDetailsErrorUnmuting)
}
default:
do {
try await notificationSettingsProxy.setNotificationMode(roomId: roomProxy.id, mode: .mute)
} catch {
state.bindings.alertInfo = AlertInfo(id: .alert,
title: L10n.commonError,
message: L10n.screenRoomDetailsErrorMuting)
}
}
state.isProcessingMuteToggleAction = false
}
private static let leaveRoomLoadingID = "LeaveRoomLoading"
private func leaveRoom() async {
userIndicatorController.submitIndicator(UserIndicator(id: Self.leaveRoomLoadingID, type: .modal, title: L10n.commonLeavingRoom, persistent: true))
let result = await roomProxy.leaveRoom()
userIndicatorController.retractIndicatorWithId(Self.leaveRoomLoadingID)
switch result {
case .failure:
state.bindings.alertInfo = AlertInfo(id: .unknown)
case .success:
callback?(.leftRoom)
}
}
private func ignore() async {
state.isProcessingIgnoreRequest = true
let result = await dmRecipient?.ignoreUser()
state.isProcessingIgnoreRequest = false
switch result {
case .success:
state.dmRecipient?.isIgnored = true
case .failure, .none:
state.bindings.alertInfo = .init(id: .unknown)
}
}
private func unignore() async {
state.isProcessingIgnoreRequest = true
let result = await dmRecipient?.unignoreUser()
state.isProcessingIgnoreRequest = false
switch result {
case .success:
state.dmRecipient?.isIgnored = false
case .failure, .none:
state.bindings.alertInfo = .init(id: .unknown)
}
}
}