Files
letro-ios/ElementX/Sources/Screens/RoomDirectorySearchScreen/RoomDirectorySearchScreenViewModel.swift
2024-03-21 14:34:35 +00:00

92 lines
3.5 KiB
Swift

//
// Copyright 2022 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 Combine
import SwiftUI
typealias RoomDirectorySearchScreenViewModelType = StateStoreViewModel<RoomDirectorySearchScreenViewState, RoomDirectorySearchScreenViewAction>
class RoomDirectorySearchScreenViewModel: RoomDirectorySearchScreenViewModelType, RoomDirectorySearchScreenViewModelProtocol {
private let roomDirectorySearch: RoomDirectorySearchProxyProtocol
private let userIndicatorController: UserIndicatorControllerProtocol
private let actionsSubject: PassthroughSubject<RoomDirectorySearchScreenViewModelAction, Never> = .init()
var actionsPublisher: AnyPublisher<RoomDirectorySearchScreenViewModelAction, Never> {
actionsSubject.eraseToAnyPublisher()
}
init(roomDirectorySearch: RoomDirectorySearchProxyProtocol,
userIndicatorController: UserIndicatorControllerProtocol,
imageProvider: ImageProviderProtocol) {
self.roomDirectorySearch = roomDirectorySearch
self.userIndicatorController = userIndicatorController
super.init(initialViewState: RoomDirectorySearchScreenViewState(), imageProvider: imageProvider)
roomDirectorySearch.resultsPublisher
.receive(on: DispatchQueue.main)
.weakAssign(to: \.state.searchResults, on: self)
.store(in: &cancellables)
context.$viewState.map(\.bindings.searchString)
// only listen to the search string when is not loading
.combineLatest(context.$viewState.map(\.isLoading)
.filter { $0 == false })
.map(\.0)
.debounceTextQueriesAndRemoveDuplicates()
.sink { [weak self] query in
self?.search(query: query)
}
.store(in: &cancellables)
}
// MARK: - Public
override func process(viewAction: RoomDirectorySearchScreenViewAction) {
MXLog.info("View model: received view action: \(viewAction)")
switch viewAction {
case .dismiss:
actionsSubject.send(.dismiss)
case .join(roomID: let roomID):
joinRoom(roomID: roomID)
}
}
private func joinRoom(roomID: String) { }
private static let errorID = "roomDirectorySearchViewModelLoadingError"
private func search(query: String?) {
guard !state.isLoading else {
return
}
state.isLoading = true
Task {
switch await roomDirectorySearch.search(query: query) {
case .success:
break
case .failure:
userIndicatorController.submitIndicator(UserIndicator(id: Self.errorID,
type: .toast,
title: L10n.screenRoomDirectorySearchLoadingError,
iconName: "xmark"))
}
state.isLoading = false
}
}
}