mastodon-ios/Mastodon/Scene/Profile/Bookmark/BookmarkViewModel.swift

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//
// BookmarkViewModel.swift
// Mastodon
//
// Created by ProtoLimit on 2022-07-19.
//
import UIKit
import Combine
import CoreData
import CoreDataStack
import GameplayKit
final class BookmarkViewModel {
var disposeBag = Set<AnyCancellable>()
// input
let context: AppContext
let activeMastodonAuthenticationBox: CurrentValueSubject<MastodonAuthenticationBox?, Never>
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
}()
init(context: AppContext) {
self.context = context
self.activeMastodonAuthenticationBox = CurrentValueSubject(context.authenticationService.activeMastodonAuthenticationBox.value)
self.statusFetchedResultsController = StatusFetchedResultsController(
managedObjectContext: context.managedObjectContext,
domain: nil,
additionalTweetPredicate: nil
)
context.authenticationService.activeMastodonAuthenticationBox
.assign(to: \.value, on: activeMastodonAuthenticationBox)
.store(in: &disposeBag)
activeMastodonAuthenticationBox
.map { $0?.domain }
.assign(to: \.value, on: statusFetchedResultsController.domain)
.store(in: &disposeBag)
}
}