mastodon-ios/Mastodon/Scene/Discovery/Community/DiscoveryCommunityViewViewM...

65 lines
1.9 KiB
Swift

//
// DiscoveryCommunityViewModel.swift
// Mastodon
//
// Created by MainasuK on 2022-4-29.
//
import os.log
import UIKit
import Combine
import GameplayKit
import CoreData
import CoreDataStack
import MastodonSDK
final class DiscoveryCommunityViewModel {
let logger = Logger(subsystem: "DiscoveryCommunityViewModel", category: "ViewModel")
var disposeBag = Set<AnyCancellable>()
// input
let context: AppContext
let viewDidAppeared = PassthroughSubject<Void, Never>()
let statusFetchedResultsController: StatusFetchedResultsController
// 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>()
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)
}
deinit {
os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
}
}