120 lines
3.9 KiB
Swift
120 lines
3.9 KiB
Swift
import Foundation
|
|
import Combine
|
|
|
|
final class MainChatViewModel: ObservableObject {
|
|
private let repository = MainChatRepository()
|
|
private var subscription = Set<AnyCancellable>()
|
|
private var latestRequestId = 0
|
|
|
|
@Published var rooms = [MainChatRoomItem]()
|
|
@Published var selectedFilter: MainChatFilter = .all
|
|
@Published var isLoading = false
|
|
@Published var isLoadingNextPage = false
|
|
@Published var hasMore = false
|
|
@Published var nextCursor: String?
|
|
@Published var hasLoaded = false
|
|
@Published var errorMessage = ""
|
|
@Published var isShowPopup = false
|
|
|
|
var shouldShowEmptyState: Bool {
|
|
hasLoaded && isLoading == false && rooms.isEmpty
|
|
}
|
|
|
|
func fetchFirstPageIfNeeded() {
|
|
guard hasLoaded == false else { return }
|
|
fetchFirstPage(filter: selectedFilter)
|
|
}
|
|
|
|
func fetchFirstPage(filter: MainChatFilter) {
|
|
selectedFilter = filter
|
|
clearRooms()
|
|
fetchChatRooms(filter: filter, cursor: nil, isNextPage: false)
|
|
}
|
|
|
|
func applyFilter(_ filter: MainChatFilter) {
|
|
guard selectedFilter != filter else { return }
|
|
fetchFirstPage(filter: filter)
|
|
}
|
|
|
|
func fetchNextPageIfNeeded(currentItem: MainChatRoomItem) {
|
|
guard rooms.last?.roomId == currentItem.roomId else { return }
|
|
guard hasMore, let nextCursor, isLoading == false, isLoadingNextPage == false else { return }
|
|
fetchChatRooms(filter: selectedFilter, cursor: nextCursor, isNextPage: true)
|
|
}
|
|
|
|
private func fetchChatRooms(filter: MainChatFilter, cursor: String?, isNextPage: Bool) {
|
|
latestRequestId += 1
|
|
let requestId = latestRequestId
|
|
|
|
if isNextPage {
|
|
isLoadingNextPage = true
|
|
} else {
|
|
isLoading = true
|
|
}
|
|
|
|
repository.getChatRooms(filter: filter.queryValue, cursor: cursor)
|
|
.sink { [weak self] result in
|
|
guard let self else { return }
|
|
guard requestId == self.latestRequestId else { return }
|
|
|
|
switch result {
|
|
case .finished:
|
|
DEBUG_LOG("finish")
|
|
case .failure(let error):
|
|
ERROR_LOG(error.localizedDescription)
|
|
self.applyFailureState()
|
|
}
|
|
} receiveValue: { [weak self] response in
|
|
guard let self else { return }
|
|
guard requestId == self.latestRequestId else { return }
|
|
|
|
do {
|
|
let jsonDecoder = JSONDecoder()
|
|
let decoded = try jsonDecoder.decode(ApiResponse<MainChatRoomsResponse>.self, from: response.data)
|
|
|
|
if let data = decoded.data, decoded.success {
|
|
self.applySuccessState(data, isNextPage: isNextPage)
|
|
} else {
|
|
self.errorMessage = decoded.message ?? I18n.MainChat.loadFailedMessage
|
|
self.isShowPopup = true
|
|
}
|
|
} catch {
|
|
ERROR_LOG(error.localizedDescription)
|
|
self.errorMessage = I18n.MainChat.loadFailedMessage
|
|
self.isShowPopup = true
|
|
}
|
|
|
|
self.hasLoaded = true
|
|
self.isLoading = false
|
|
self.isLoadingNextPage = false
|
|
}
|
|
.store(in: &subscription)
|
|
}
|
|
|
|
private func applySuccessState(_ data: MainChatRoomsResponse, isNextPage: Bool) {
|
|
hasMore = data.hasMore
|
|
nextCursor = data.nextCursor
|
|
|
|
if isNextPage {
|
|
rooms.append(contentsOf: data.rooms)
|
|
} else {
|
|
rooms = data.rooms
|
|
}
|
|
}
|
|
|
|
private func applyFailureState() {
|
|
errorMessage = I18n.MainChat.loadFailedMessage
|
|
isShowPopup = true
|
|
hasLoaded = true
|
|
isLoading = false
|
|
isLoadingNextPage = false
|
|
}
|
|
|
|
private func clearRooms() {
|
|
rooms = []
|
|
hasMore = false
|
|
nextCursor = nil
|
|
hasLoaded = false
|
|
}
|
|
}
|