mirror of
https://github.com/vector-im/element-ios.git
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260 lines
10 KiB
Swift
260 lines
10 KiB
Swift
// File created from ScreenTemplate
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// $ createScreen.sh Spaces/SpaceList SpaceList
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/*
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Copyright 2020 New Vector Ltd
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import Foundation
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final class SpaceListViewModel: SpaceListViewModelType {
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// MARK: - Constants
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enum Constants {
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static let homeSpaceId: String = "home"
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}
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// MARK: - Properties
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// MARK: Private
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private let userSessionsService: UserSessionsService
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private var currentOperation: MXHTTPOperation?
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private var sections: [SpaceListSection] = []
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private var selectedIndexPath: IndexPath = IndexPath(row: 0, section: 0) {
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didSet {
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self.selectedItemId = self.itemId(with: self.selectedIndexPath)
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}
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}
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private var homeIndexPath: IndexPath = IndexPath(row: 0, section: 0)
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private var selectedItemId: String = Constants.homeSpaceId
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// MARK: Public
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weak var viewDelegate: SpaceListViewModelViewDelegate?
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weak var coordinatorDelegate: SpaceListViewModelCoordinatorDelegate?
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// MARK: - Setup
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init(userSessionsService: UserSessionsService) {
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self.userSessionsService = userSessionsService
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NotificationCenter.default.addObserver(self, selector: #selector(self.sessionDidSync(notification:)), name: MXSpaceService.didBuildSpaceGraph, object: nil)
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NotificationCenter.default.addObserver(self, selector: #selector(self.counterDidUpdateNotificationCount(notification:)), name: MXSpaceNotificationCounter.didUpdateNotificationCount, object: nil)
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}
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deinit {
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self.cancelOperations()
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}
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// MARK: - Public
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func process(viewAction: SpaceListViewAction) {
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switch viewAction {
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case .loadData:
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self.loadData()
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case .selectRow(at: let indexPath, from: let sourceView):
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guard self.selectedIndexPath != indexPath else {
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return
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}
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let section = self.sections[indexPath.section]
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switch section {
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case .home:
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self.selectHome()
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self.selectedIndexPath = indexPath
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self.update(viewState: .selectionChanged(indexPath))
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case .spaces(let viewDataList):
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let spaceViewData = viewDataList[indexPath.row]
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if spaceViewData.isInvite {
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self.selectInvite(with: spaceViewData.spaceId, from: sourceView)
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} else {
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self.selectSpace(with: spaceViewData.spaceId)
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self.selectedIndexPath = indexPath
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self.update(viewState: .selectionChanged(indexPath))
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}
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}
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case .moreAction(at: let indexPath, from: let sourceView):
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let section = self.sections[indexPath.section]
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switch section {
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case .home:
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self.coordinatorDelegate?.spaceListViewModel(self, didPressMoreForSpaceWithId: Constants.homeSpaceId, from: sourceView)
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case .spaces(let viewDataList):
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let spaceViewData = viewDataList[indexPath.row]
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self.coordinatorDelegate?.spaceListViewModel(self, didPressMoreForSpaceWithId: spaceViewData.spaceId, from: sourceView)
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}
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}
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}
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func revertItemSelection() {
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self.update(viewState: .selectionChanged(self.selectedIndexPath))
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}
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func select(spaceWithId spaceId: String) {
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for (sectionIndex, section) in self.sections.enumerated() {
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switch section {
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case .home: break
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case .spaces(let viewDataList):
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for (row, itemViewData) in viewDataList.enumerated() where itemViewData.spaceId == spaceId {
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let indexPath = IndexPath(row: row, section: sectionIndex)
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self.selectSpace(with: spaceId)
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self.selectedIndexPath = indexPath
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self.update(viewState: .selectionChanged(indexPath))
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}
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}
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}
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}
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// MARK: - Private
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@objc private func sessionDidSync(notification: Notification) {
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loadData()
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}
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@objc private func counterDidUpdateNotificationCount(notification: Notification) {
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loadData()
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}
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private func loadData() {
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guard let session = self.userSessionsService.mainUserSession?.matrixSession else {
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// If there is no main session, reset current selection and give an empty section list
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// It can happen when the user make a clear cache or logout
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self.resetList()
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return
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}
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self.update(viewState: .loading)
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let homeViewData = self.createHomeViewData(session: session)
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let viewDataList = getSpacesViewData(session: session)
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let sections: [SpaceListSection] = viewDataList.invites.isEmpty ? [
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.home(homeViewData),
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.spaces(viewDataList.spaces)
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]
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:
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[
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.spaces(viewDataList.invites),
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.home(homeViewData),
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.spaces(viewDataList.spaces)
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]
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self.sections = sections
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let homeIndexPath = viewDataList.invites.isEmpty ? IndexPath(row: 0, section: 0) : IndexPath(row: 0, section: 1)
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if self.selectedIndexPath.section == self.homeIndexPath.section {
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self.selectedIndexPath = homeIndexPath
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} else if self.selectedItemId != self.itemId(with: self.selectedIndexPath) {
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var newSelection: IndexPath?
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let section = sections.last
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switch section {
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case .home:
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break
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case .spaces(let viewDataList):
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var index = 0
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for itemViewData in viewDataList {
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if itemViewData.spaceId == self.selectedItemId {
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newSelection = IndexPath(row: index, section: sections.count - 1)
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}
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index += 1
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}
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case .none:
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break
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}
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if let selection = newSelection {
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self.selectedIndexPath = selection
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} else {
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self.selectedIndexPath = homeIndexPath
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self.coordinatorDelegate?.spaceListViewModelDidSelectHomeSpace(self)
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}
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}
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self.homeIndexPath = homeIndexPath
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self.update(viewState: .loaded(sections))
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self.update(viewState: .selectionChanged(self.selectedIndexPath))
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}
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private func selectHome() {
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self.coordinatorDelegate?.spaceListViewModelDidSelectHomeSpace(self)
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}
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private func selectSpace(with spaceId: String) {
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self.coordinatorDelegate?.spaceListViewModel(self, didSelectSpaceWithId: spaceId)
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}
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private func selectInvite(with spaceId: String, from sourceView: UIView?) {
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self.coordinatorDelegate?.spaceListViewModel(self, didSelectInviteWithId: spaceId, from: sourceView)
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}
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private func createHomeViewData(session: MXSession) -> SpaceListItemViewData {
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let avatarViewData = AvatarViewData(matrixItemId: Constants.homeSpaceId, displayName: nil, avatarUrl: nil, mediaManager: session.mediaManager, fallbackImage: .image(Asset.Images.spaceHomeIcon.image, .center))
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let homeNotificationState = session.spaceService.notificationCounter.homeNotificationState
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let homeViewData = SpaceListItemViewData(spaceId: Constants.homeSpaceId,
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title: VectorL10n.spacesHomeSpaceTitle, avatarViewData: avatarViewData, isInvite: false, notificationCount: homeNotificationState.allCount, highlightedNotificationCount: homeNotificationState.allHighlightCount)
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return homeViewData
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}
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private func getSpacesViewData(session: MXSession) -> (invites: [SpaceListItemViewData], spaces: [SpaceListItemViewData]) {
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var invites: [SpaceListItemViewData] = []
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var spaces: [SpaceListItemViewData] = []
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session.spaceService.rootSpaceSummaries.forEach { summary in
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let avatarViewData = AvatarViewData(matrixItemId: summary.roomId, displayName: summary.displayname, avatarUrl: summary.avatar, mediaManager: session.mediaManager, fallbackImage: .matrixItem(summary.roomId, summary.displayname))
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let notificationState = session.spaceService.notificationCounter.notificationState(forSpaceWithId: summary.roomId)
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let viewData = SpaceListItemViewData(spaceId: summary.roomId, title: summary.displayname, avatarViewData: avatarViewData, isInvite: summary.membership == .invite, notificationCount: notificationState?.groupMissedDiscussionsCount ?? 0, highlightedNotificationCount: notificationState?.groupMissedDiscussionsHighlightedCount ?? 0)
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if viewData.isInvite {
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invites.append(viewData)
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} else {
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spaces.append(viewData)
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}
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}
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return (invites, spaces)
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}
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private func update(viewState: SpaceListViewState) {
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self.viewDelegate?.spaceListViewModel(self, didUpdateViewState: viewState)
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}
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private func cancelOperations() {
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self.currentOperation?.cancel()
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}
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private func itemId(with indexPath: IndexPath) -> String {
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guard self.selectedIndexPath.section < self.sections.count else {
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return Constants.homeSpaceId
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}
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let section = self.sections[self.selectedIndexPath.section]
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switch section {
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case .home:
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return Constants.homeSpaceId
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case .spaces(let viewDataList):
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let spaceViewData = viewDataList[self.selectedIndexPath.row]
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return spaceViewData.spaceId
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}
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}
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private func resetList() {
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self.sections = []
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let selectedIndexPath = IndexPath(row: 0, section: 0)
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self.selectedIndexPath = selectedIndexPath
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self.homeIndexPath = selectedIndexPath
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self.update(viewState: .loaded([]))
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}
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}
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