element-ios/Riot/Modules/Room/RoomInfo/RoomInfoList/RoomInfoListViewModel.swift

128 lines
4.7 KiB
Swift

// File created from ScreenTemplate
// $ createScreen.sh Room2/RoomInfo RoomInfoList
/*
Copyright 2020 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 Foundation
final class RoomInfoListViewModel: NSObject, RoomInfoListViewModelType {
// MARK: - Properties
// MARK: Private
private let session: MXSession
private let room: MXRoom
// MARK: Public
weak var viewDelegate: RoomInfoListViewModelViewDelegate?
weak var coordinatorDelegate: RoomInfoListViewModelCoordinatorDelegate?
private var viewData: RoomInfoListViewData {
let encryptionImage = EncryptionTrustLevelBadgeImageHelper.roomBadgeImage(for: room.summary.roomEncryptionTrustLevel())
let directUserPresence = session.user(withUserId: room.directUserId)?.presence ?? .unknown
let basicInfoViewData = RoomInfoBasicViewData(avatarUrl: room.summary.avatar,
mediaManager: session.mediaManager,
roomId: room.roomId,
roomDisplayName: room.summary.displayName,
mainRoomAlias: room.summary.aliases?.first,
roomTopic: room.summary.topic,
encryptionImage: encryptionImage,
isEncrypted: room.summary.isEncrypted,
isDirect: room.isDirect,
directUserId: room.directUserId,
directUserPresence: directUserPresence)
return RoomInfoListViewData(numberOfMembers: Int(room.summary.membersCount.joined),
isEncrypted: room.summary.isEncrypted,
isDirect: room.isDirect,
basicInfoViewData: basicInfoViewData)
}
// MARK: - Setup
init(session: MXSession, room: MXRoom) {
self.session = session
self.room = room
super.init()
startObservingSummaryChanges()
}
deinit {
stopObservingSummaryChanges()
}
// MARK: - Public
func process(viewAction: RoomInfoListViewAction) {
switch viewAction {
case .loadData:
self.loadData()
case .navigate(let target):
self.navigate(to: target)
case .leave:
self.leave()
case .cancel:
self.coordinatorDelegate?.roomInfoListViewModelDidCancel(self)
case .report:
self.coordinatorDelegate?.roomInfoListViewModelDidRequestReportRoom(self)
}
}
// MARK: - Private
private func startObservingSummaryChanges() {
NotificationCenter.default.addObserver(self, selector: #selector(roomSummaryUpdated(_:)), name: .mxRoomSummaryDidChange, object: room.summary)
}
private func stopObservingSummaryChanges() {
NotificationCenter.default.removeObserver(self, name: .mxRoomSummaryDidChange, object: nil)
}
@objc private func roomSummaryUpdated(_ notification: Notification) {
// force update view
self.update(viewState: .loaded(viewData: viewData))
}
private func loadData() {
self.update(viewState: .loaded(viewData: viewData))
}
private func navigate(to target: RoomInfoListTarget) {
self.coordinatorDelegate?.roomInfoListViewModel(self, wantsToNavigateTo: target)
}
private func leave() {
self.stopObservingSummaryChanges()
self.update(viewState: .loading)
self.room.leave { (response) in
switch response {
case .success:
self.coordinatorDelegate?.roomInfoListViewModelDidLeaveRoom(self)
case .failure(let error):
self.startObservingSummaryChanges()
self.update(viewState: .error(error))
}
}
}
private func update(viewState: RoomInfoListViewState) {
self.viewDelegate?.roomInfoListViewModel(self, didUpdateViewState: viewState)
}
}