mirror of
https://github.com/vector-im/element-ios.git
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178 lines
6.3 KiB
Swift
178 lines
6.3 KiB
Swift
// File created from ScreenTemplate
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// $ createScreen.sh Rooms/ShowDirectory ShowDirectory
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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 ShowDirectoryViewModel: NSObject, ShowDirectoryViewModelType {
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// MARK: - Properties
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// MARK: Private
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private let session: MXSession
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private let dataSource: PublicRoomsDirectoryDataSource
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private var currentOperation: MXHTTPOperation?
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private var userDisplayName: String?
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// MARK: Public
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weak var viewDelegate: ShowDirectoryViewModelViewDelegate?
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weak var coordinatorDelegate: ShowDirectoryViewModelCoordinatorDelegate?
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var roomsCount: Int {
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return Int(dataSource.roomsCount)
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}
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var directoryServerDisplayname: String? {
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return dataSource.directoryServerDisplayname
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}
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func roomViewModel(at indexPath: IndexPath) -> DirectoryRoomTableViewCellVM? {
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guard let room = dataSource.room(at: indexPath) else { return nil }
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let summary = session.roomSummary(withRoomId: room.roomId)
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return DirectoryRoomTableViewCellVM(title: room.displayname(),
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numberOfUsers: room.numJoinedMembers,
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subtitle: MXTools.stripNewlineCharacters(room.topic),
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isJoined: summary?.membership == .join,
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roomId: room.roomId,
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avatarUrl: room.avatarUrl,
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mediaManager: session.mediaManager)
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}
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// MARK: - Setup
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init(session: MXSession, dataSource: PublicRoomsDirectoryDataSource) {
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self.session = session
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self.dataSource = dataSource
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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: ShowDirectoryViewAction) {
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switch viewAction {
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case .loadData(let force):
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self.loadData(force: force)
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case .selectRoom(let indexPath):
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guard let room = dataSource.room(at: indexPath) else { return }
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self.coordinatorDelegate?.showDirectoryViewModelDidSelect(self, room: room)
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case .joinRoom(let indexPath):
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guard let room = dataSource.room(at: indexPath) else { return }
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joinRoom(room)
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case .search(let pattern):
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self.dataSource.searchPattern = pattern
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self.loadData(force: true)
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case .createNewRoom:
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self.coordinatorDelegate?.showDirectoryViewModelDidTapCreateNewRoom(self)
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case .switchServer:
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self.switchServer()
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case .cancel:
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self.cancelOperations()
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self.coordinatorDelegate?.showDirectoryViewModelDidCancel(self)
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}
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}
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// MARK: - Private
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private func loadData(force: Bool) {
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if !force && (dataSource.hasReachedPaginationEnd || currentOperation != nil) {
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// We got all public rooms or we are already paginating
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// Do nothing
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return
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}
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self.update(viewState: .loading)
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currentOperation = dataSource.paginate({ [weak self] (roomsAdded) in
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guard let self = self else { return }
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if roomsAdded > 0 {
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self.viewDelegate?.showDirectoryViewModelDidUpdateDataSource(self)
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}
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self.update(viewState: .loaded)
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self.currentOperation = nil
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}, failure: { [weak self] (error) in
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guard let self = self else { return }
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guard let error = error else { return }
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self.update(viewState: .error(error))
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self.currentOperation = nil
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})
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}
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private func switchServer() {
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let controller = DirectoryServerPickerViewController()
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let source = MXKDirectoryServersDataSource(matrixSession: session)
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source?.finalizeInitialization()
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source?.roomDirectoryServers = BuildSettings.publicRoomsDirectoryServers
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controller.display(with: source) { [weak self] (cellData) in
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guard let self = self else { return }
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guard let cellData = cellData else { return }
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if let thirdpartyProtocolInstance = cellData.thirdPartyProtocolInstance {
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self.dataSource.thirdpartyProtocolInstance = thirdpartyProtocolInstance
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} else if let homeserver = cellData.homeserver {
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self.dataSource.includeAllNetworks = cellData.includeAllNetworks
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self.dataSource.homeserver = homeserver
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}
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self.loadData(force: false)
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}
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self.coordinatorDelegate?.showDirectoryViewModelWantsToShow(self, controller: controller)
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}
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private func joinRoom(_ room: MXPublicRoom) {
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session.joinRoom(room.roomId) { [weak self] (response) in
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guard let self = self else { return }
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self.viewDelegate?.showDirectoryViewModelDidUpdateDataSource(self)
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}
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}
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private func update(viewState: ShowDirectoryViewState) {
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self.viewDelegate?.showDirectoryViewModel(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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}
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// MARK: - MXKDataSourceDelegate
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extension ShowDirectoryViewModel: MXKDataSourceDelegate {
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func cellViewClass(for cellData: MXKCellData!) -> MXKCellRendering.Type! {
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return nil
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}
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func cellReuseIdentifier(for cellData: MXKCellData!) -> String! {
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return nil
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}
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func dataSource(_ dataSource: MXKDataSource!, didCellChange changes: Any!) {
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}
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func dataSource(_ dataSource: MXKDataSource!, didStateChange state: MXKDataSourceState) {
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self.viewDelegate?.showDirectoryViewModelDidUpdateDataSource(self)
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}
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}
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