129 lines
4.6 KiB
Swift
129 lines
4.6 KiB
Swift
//
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// Copyright 2022 New Vector Ltd
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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 SwiftUI
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typealias RoomMembersListScreenViewModelType = StateStoreViewModel<RoomMembersListScreenViewState, RoomMembersListScreenViewAction>
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class RoomMembersListScreenViewModel: RoomMembersListScreenViewModelType, RoomMembersListScreenViewModelProtocol {
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private let roomProxy: RoomProxyProtocol
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private let userIndicatorController: UserIndicatorControllerProtocol
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private var members: [RoomMemberProxyProtocol] = []
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var callback: ((RoomMembersListScreenViewModelAction) -> Void)?
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init(roomProxy: RoomProxyProtocol,
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mediaProvider: MediaProviderProtocol,
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userIndicatorController: UserIndicatorControllerProtocol) {
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self.roomProxy = roomProxy
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self.userIndicatorController = userIndicatorController
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super.init(initialViewState: .init(joinedMembersCount: roomProxy.joinedMembersCount),
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imageProvider: mediaProvider)
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setupMembers()
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}
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// MARK: - Public
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override func process(viewAction: RoomMembersListScreenViewAction) {
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switch viewAction {
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case .selectMember(let id):
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guard let member = members.first(where: { $0.userID == id }) else {
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MXLog.error("Selected member \(id) not found")
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return
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}
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callback?(.selectMember(member))
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case .invite:
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callback?(.invite)
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}
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}
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// MARK: - Private
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private func setupMembers() {
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Task {
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showLoader()
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await roomProxy.updateMembers()
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hideLoader()
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}
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roomProxy.membersPublisher
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.filter { !$0.isEmpty }
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.sink { [weak self] members in
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self?.updateState(members: members)
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}
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.store(in: &cancellables)
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}
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private func updateState(members: [RoomMemberProxyProtocol]) {
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Task {
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showLoader()
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let roomMembersDetails = await buildMembersDetails(members: members)
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self.members = members
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self.state = .init(joinedMembersCount: roomProxy.joinedMembersCount,
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joinedMembers: roomMembersDetails.joinedMembers,
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invitedMembers: roomMembersDetails.invitedMembers)
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self.state.canInviteUsers = roomMembersDetails.accountOwner?.canInviteUsers ?? false
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hideLoader()
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}
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}
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private func buildMembersDetails(members: [RoomMemberProxyProtocol]) async -> RoomMembersDetails {
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await Task.detached {
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// accessing RoomMember's properties is very slow. We need to do it in a background thread.
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var invitedMembers: [RoomMemberDetails] = .init()
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var joinedMembers: [RoomMemberDetails] = .init()
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var accountOwner: RoomMemberProxyProtocol?
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for member in members {
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if accountOwner == nil, member.isAccountOwner {
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accountOwner = member
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}
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switch member.membership {
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case .invite:
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invitedMembers.append(.init(withProxy: member))
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case .join:
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joinedMembers.append(.init(withProxy: member))
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default:
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continue
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}
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}
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return .init(invitedMembers: invitedMembers, joinedMembers: joinedMembers, accountOwner: accountOwner)
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}
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.value
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}
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private let userIndicatorID = UUID().uuidString
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private func showLoader() {
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userIndicatorController.submitIndicator(UserIndicator(id: userIndicatorID, type: .modal, title: L10n.commonLoading, persistent: true), delay: .milliseconds(200))
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}
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private func hideLoader() {
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userIndicatorController.retractIndicatorWithId(userIndicatorID)
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}
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}
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private struct RoomMembersDetails {
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var invitedMembers: [RoomMemberDetails]
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var joinedMembers: [RoomMemberDetails]
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var accountOwner: RoomMemberProxyProtocol?
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}
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