263 lines
8.9 KiB
Swift
263 lines
8.9 KiB
Swift
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//
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// UserTimelineViewModel+State.swift
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// Mastodon
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//
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// Created by MainasuK Cirno on 2021-3-30.
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//
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import os.log
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import Foundation
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import GameplayKit
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import MastodonSDK
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extension UserTimelineViewModel {
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class State: GKState {
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weak var viewModel: UserTimelineViewModel?
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init(viewModel: UserTimelineViewModel) {
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self.viewModel = viewModel
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}
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override func didEnter(from previousState: GKState?) {
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os_log("%{public}s[%{public}ld], %{public}s: enter %s, previous: %s", ((#file as NSString).lastPathComponent), #line, #function, self.debugDescription, previousState.debugDescription)
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}
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}
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}
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extension UserTimelineViewModel.State {
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class Initial: UserTimelineViewModel.State {
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override func isValidNextState(_ stateClass: AnyClass) -> Bool {
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guard let viewModel = viewModel else { return false }
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switch stateClass {
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case is Reloading.Type:
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return viewModel.userID.value != nil
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case is Suspended.Type:
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return true
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default:
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return false
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}
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}
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}
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class Reloading: UserTimelineViewModel.State {
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override func isValidNextState(_ stateClass: AnyClass) -> Bool {
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switch stateClass {
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case is Fail.Type:
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return true
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case is Idle.Type:
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return true
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case is NoMore.Type:
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return true
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case is NotAuthorized.Type, is Blocked.Type:
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return true
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case is Suspended.Type:
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return true
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default:
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return false
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}
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}
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override func didEnter(from previousState: GKState?) {
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super.didEnter(from: previousState)
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guard let viewModel = viewModel, let stateMachine = stateMachine else { return }
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// reset
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viewModel.statusFetchedResultsController.statusIDs.value = []
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guard let userID = viewModel.userID.value, !userID.isEmpty else {
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stateMachine.enter(Fail.self)
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return
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}
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guard let activeMastodonAuthenticationBox = viewModel.context.authenticationService.activeMastodonAuthenticationBox.value else {
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stateMachine.enter(Fail.self)
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return
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}
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let domain = activeMastodonAuthenticationBox.domain
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let queryFilter = viewModel.queryFilter.value
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viewModel.context.apiService.userTimeline(
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domain: domain,
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accountID: userID,
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maxID: nil,
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sinceID: nil,
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excludeReplies: queryFilter.excludeReplies,
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excludeReblogs: queryFilter.excludeReblogs,
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onlyMedia: queryFilter.onlyMedia,
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authorizationBox: activeMastodonAuthenticationBox
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)
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.receive(on: DispatchQueue.main)
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.sink { completion in
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} receiveValue: { response in
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
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var hasNewStatusesAppend = false
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var statusIDs = viewModel.statusFetchedResultsController.statusIDs.value
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for status in response.value {
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guard !statusIDs.contains(status.id) else { continue }
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statusIDs.append(status.id)
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hasNewStatusesAppend = true
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}
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if hasNewStatusesAppend {
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stateMachine.enter(Idle.self)
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} else {
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stateMachine.enter(NoMore.self)
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}
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viewModel.statusFetchedResultsController.statusIDs.value = statusIDs
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}
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.store(in: &viewModel.disposeBag)
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}
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}
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class Fail: UserTimelineViewModel.State {
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override func isValidNextState(_ stateClass: AnyClass) -> Bool {
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switch stateClass {
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case is Reloading.Type, is LoadingMore.Type:
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return true
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case is Suspended.Type:
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return true
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default:
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return false
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}
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}
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}
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class Idle: UserTimelineViewModel.State {
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override func isValidNextState(_ stateClass: AnyClass) -> Bool {
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switch stateClass {
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case is Reloading.Type, is LoadingMore.Type:
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return true
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case is Suspended.Type:
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return true
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default:
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return false
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}
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}
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}
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class LoadingMore: UserTimelineViewModel.State {
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override func isValidNextState(_ stateClass: AnyClass) -> Bool {
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switch stateClass {
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case is Fail.Type:
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return true
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case is Idle.Type:
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return true
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case is NoMore.Type:
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return true
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case is NotAuthorized.Type, is Blocked.Type:
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return true
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case is Suspended.Type:
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return true
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default:
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return false
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}
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}
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override func didEnter(from previousState: GKState?) {
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super.didEnter(from: previousState)
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guard let viewModel = viewModel, let stateMachine = stateMachine else { return }
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guard let maxID = viewModel.statusFetchedResultsController.statusIDs.value.last else {
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stateMachine.enter(Fail.self)
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return
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}
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guard let userID = viewModel.userID.value, !userID.isEmpty else {
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stateMachine.enter(Fail.self)
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return
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}
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guard let activeMastodonAuthenticationBox = viewModel.context.authenticationService.activeMastodonAuthenticationBox.value else {
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stateMachine.enter(Fail.self)
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return
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}
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let domain = activeMastodonAuthenticationBox.domain
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let queryFilter = viewModel.queryFilter.value
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viewModel.context.apiService.userTimeline(
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domain: domain,
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accountID: userID,
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maxID: maxID,
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sinceID: nil,
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excludeReplies: queryFilter.excludeReplies,
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excludeReblogs: queryFilter.excludeReblogs,
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onlyMedia: queryFilter.onlyMedia,
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authorizationBox: activeMastodonAuthenticationBox
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)
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.receive(on: DispatchQueue.main)
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.sink { completion in
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} receiveValue: { response in
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
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var hasNewStatusesAppend = false
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var statusIDs = viewModel.statusFetchedResultsController.statusIDs.value
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for status in response.value {
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guard !statusIDs.contains(status.id) else { continue }
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statusIDs.append(status.id)
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hasNewStatusesAppend = true
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}
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if hasNewStatusesAppend {
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stateMachine.enter(Idle.self)
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} else {
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stateMachine.enter(NoMore.self)
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}
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viewModel.statusFetchedResultsController.statusIDs.value = statusIDs
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}
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.store(in: &viewModel.disposeBag)
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}
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}
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class NotAuthorized: UserTimelineViewModel.State {
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override func isValidNextState(_ stateClass: AnyClass) -> Bool {
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switch stateClass {
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case is Reloading.Type:
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return true
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case is Suspended.Type:
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return true
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default:
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return false
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}
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}
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}
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class Blocked: UserTimelineViewModel.State {
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override func isValidNextState(_ stateClass: AnyClass) -> Bool {
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switch stateClass {
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case is Reloading.Type:
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return true
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case is Suspended.Type:
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return true
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default:
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return false
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}
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}
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}
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class Suspended: UserTimelineViewModel.State {
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}
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class NoMore: UserTimelineViewModel.State {
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override func isValidNextState(_ stateClass: AnyClass) -> Bool {
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switch stateClass {
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case is Reloading.Type:
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return true
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case is NotAuthorized.Type, is Blocked.Type:
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return true
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case is Suspended.Type:
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return true
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default:
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return false
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}
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}
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}
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}
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