Files
letro-ios/ElementX/Sources/Screens/Spaces/SpaceListScreen/SpaceListScreenViewModel.swift

102 lines
4.2 KiB
Swift

//
// Copyright 2025 Element Creations Ltd.
// Copyright 2025 New Vector Ltd.
//
// SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial.
// Please see LICENSE files in the repository root for full details.
//
import Combine
import SwiftUI
typealias SpaceListScreenViewModelType = StateStoreViewModelV2<SpaceListScreenViewState, SpaceListScreenViewAction>
class SpaceListScreenViewModel: SpaceListScreenViewModelType, SpaceListScreenViewModelProtocol {
private let spaceServiceProxy: SpaceServiceProxyProtocol
private let appSettings: AppSettings
private let userIndicatorController: UserIndicatorControllerProtocol
private let actionsSubject: PassthroughSubject<SpaceListScreenViewModelAction, Never> = .init()
var actionsPublisher: AnyPublisher<SpaceListScreenViewModelAction, Never> {
actionsSubject.eraseToAnyPublisher()
}
init(userSession: UserSessionProtocol,
selectedSpacePublisher: CurrentValuePublisher<String?, Never>,
appSettings: AppSettings,
userIndicatorController: UserIndicatorControllerProtocol) {
spaceServiceProxy = userSession.clientProxy.spaceService
self.appSettings = appSettings
self.userIndicatorController = userIndicatorController
super.init(initialViewState: SpaceListScreenViewState(userID: userSession.clientProxy.userID,
topLevelSpaces: spaceServiceProxy.topLevelSpacesPublisher.value,
bindings: .init()),
mediaProvider: userSession.mediaProvider)
spaceServiceProxy.topLevelSpacesPublisher
.receive(on: DispatchQueue.main)
.weakAssign(to: \.state.topLevelSpaces, on: self)
.store(in: &cancellables)
selectedSpacePublisher
.weakAssign(to: \.state.selectedSpaceID, on: self)
.store(in: &cancellables)
userSession.clientProxy.userAvatarURLPublisher
.receive(on: DispatchQueue.main)
.weakAssign(to: \.state.userAvatarURL, on: self)
.store(in: &cancellables)
userSession.clientProxy.userDisplayNamePublisher
.receive(on: DispatchQueue.main)
.weakAssign(to: \.state.userDisplayName, on: self)
.store(in: &cancellables)
}
// MARK: - Public
override func process(viewAction: SpaceListScreenViewAction) {
MXLog.info("View model: received view action: \(viewAction)")
switch viewAction {
case .spaceAction(.select(let spaceRoomProxy)):
Task { await selectSpace(spaceRoomProxy) }
case .spaceAction(.join):
fatalError("There shouldn't be any unjoined spaces in the joined spaces list.")
case .showSettings:
actionsSubject.send(.showSettings)
case .screenAppeared:
if !appSettings.hasSeenSpacesAnnouncement {
// Use a task otherwise the presentation isn't animated.
Task { state.bindings.isPresentingFeatureAnnouncement = true }
}
case .featureAnnouncementAppeared:
appSettings.hasSeenSpacesAnnouncement = true
}
}
// MARK: - Private
private func selectSpace(_ spaceRoomProxy: SpaceRoomProxyProtocol) async {
switch await spaceServiceProxy.spaceRoomList(spaceID: spaceRoomProxy.id) {
case .success(let spaceRoomListProxy):
actionsSubject.send(.selectSpace(spaceRoomListProxy))
case .failure(let error):
MXLog.error("Unable to select space: \(error)")
showFailureIndicator()
}
}
// MARK: - Indicators
private static var failureIndicatorID: String { "\(Self.self)-Failure" }
private func showFailureIndicator() {
userIndicatorController.submitIndicator(UserIndicator(id: Self.failureIndicatorID,
type: .toast,
title: L10n.errorUnknown,
iconName: "xmark"))
}
}