6160c44d67
* Update copyright holding and dates * compound IDE Macros updated * update copyright * update copyrights done * update templates and README
110 lines
3.9 KiB
Swift
110 lines
3.9 KiB
Swift
//
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// Copyright 2025 Element Creations Ltd.
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// Copyright 2022-2025 New Vector Ltd.
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//
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// SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial.
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// Please see LICENSE files in the repository root for full details.
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//
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import Combine
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import SwiftUI
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typealias RoomSelectionScreenViewModelType = StateStoreViewModel<RoomSelectionScreenViewState, RoomSelectionScreenViewAction>
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class RoomSelectionScreenViewModel: RoomSelectionScreenViewModelType, RoomSelectionScreenViewModelProtocol {
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private let clientProxy: ClientProxyProtocol
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private let roomSummaryProvider: RoomSummaryProviderProtocol
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private var actionsSubject: PassthroughSubject<RoomSelectionScreenViewModelAction, Never> = .init()
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var actionsPublisher: AnyPublisher<RoomSelectionScreenViewModelAction, Never> {
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actionsSubject.eraseToAnyPublisher()
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}
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init(userSession: UserSessionProtocol,
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roomSummaryProvider: RoomSummaryProviderProtocol) {
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clientProxy = userSession.clientProxy
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self.roomSummaryProvider = roomSummaryProvider
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super.init(initialViewState: RoomSelectionScreenViewState(), mediaProvider: userSession.mediaProvider)
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roomSummaryProvider.roomListPublisher
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.receive(on: DispatchQueue.main)
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.sink { [weak self] _ in
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self?.updateRooms()
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}
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.store(in: &cancellables)
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context.$viewState
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.map(\.bindings.searchQuery)
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.removeDuplicates()
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.sink { [weak self] searchQuery in
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if searchQuery.isEmpty {
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self?.roomSummaryProvider.setFilter(.all(filters: []))
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} else {
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self?.roomSummaryProvider.setFilter(.search(query: searchQuery))
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}
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}
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.store(in: &cancellables)
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updateRooms()
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}
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override func process(viewAction: RoomSelectionScreenViewAction) {
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switch viewAction {
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case .cancel:
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actionsSubject.send(.dismiss)
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case .confirm:
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guard let selectedRoomID = state.selectedRoomID else {
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return
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}
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actionsSubject.send(.confirm(roomID: selectedRoomID))
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case .selectRoom(let roomID):
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state.selectedRoomID = roomID
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case .reachedTop:
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updateVisibleRange(edge: .top)
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case .reachedBottom:
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updateVisibleRange(edge: .bottom)
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}
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}
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func stop() {
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// This is a shared provider so we should reset the filtering when we are done with the view
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roomSummaryProvider.setFilter(.all(filters: []))
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}
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// MARK: - Private
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private func updateRooms() {
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var rooms = [RoomSelectionRoom]()
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for summary in roomSummaryProvider.roomListPublisher.value {
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rooms.append(.init(id: summary.id,
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title: summary.name,
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description: summary.roomListDescription,
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avatar: summary.avatar))
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}
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state.rooms = rooms
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}
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/// The actual range values don't matter as long as they contain the lower
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/// or upper bounds. updateVisibleRange is a hybrid API that powers both
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/// sliding sync visible range update and list paginations
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/// For lists other than the home screen one we don't care about visible ranges,
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/// we just need the respective bounds to be there to trigger a next page load or
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/// a reset to just one page
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private func updateVisibleRange(edge: UIRectEdge) {
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switch edge {
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case .top:
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roomSummaryProvider.updateVisibleRange(0..<0)
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case .bottom:
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let roomCount = roomSummaryProvider.roomListPublisher.value.count
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roomSummaryProvider.updateVisibleRange(roomCount..<roomCount)
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default:
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break
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}
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}
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}
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