Kurdtvs-Live-Kurdish-TV-Kur.../Mastodon/Scene/Discovery/Posts/DiscoveryPostsViewModel.swift

84 lines
2.5 KiB
Swift

//
// DiscoveryPostsViewModel.swift
// Mastodon
//
// Created by MainasuK on 2022-4-12.
//
import os.log
import UIKit
import Combine
import GameplayKit
import CoreData
import CoreDataStack
import MastodonSDK
final class DiscoveryPostsViewModel {
var disposeBag = Set<AnyCancellable>()
// input
let context: AppContext
let statusFetchedResultsController: StatusFetchedResultsController
let listBatchFetchViewModel = ListBatchFetchViewModel()
// output
var diffableDataSource: UITableViewDiffableDataSource<StatusSection, StatusItem>?
private(set) lazy var stateMachine: GKStateMachine = {
let stateMachine = GKStateMachine(states: [
State.Initial(viewModel: self),
State.Reloading(viewModel: self),
State.Fail(viewModel: self),
State.Idle(viewModel: self),
State.Loading(viewModel: self),
State.NoMore(viewModel: self),
])
stateMachine.enter(State.Initial.self)
return stateMachine
}()
let didLoadLatest = PassthroughSubject<Void, Never>()
@Published var isServerSupportEndpoint = true
init(context: AppContext) {
self.context = context
self.statusFetchedResultsController = StatusFetchedResultsController(
managedObjectContext: context.managedObjectContext,
domain: nil,
additionalTweetPredicate: nil
)
// end init
context.authenticationService.activeMastodonAuthentication
.map { $0?.domain }
.assign(to: \.value, on: statusFetchedResultsController.domain)
.store(in: &disposeBag)
Task {
await checkServerEndpoint()
} // end Task
}
deinit {
os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
}
}
extension DiscoveryPostsViewModel {
func checkServerEndpoint() async {
guard let authenticationBox = context.authenticationService.activeMastodonAuthenticationBox.value else { return }
do {
_ = try await context.apiService.trendStatuses(
domain: authenticationBox.domain,
query: .init(offset: nil, limit: nil)
)
} catch let error as Mastodon.API.Error where error.httpResponseStatus.code == 404 {
isServerSupportEndpoint = false
} catch {
// do nothing
}
}
}