forked from zelo72/mastodon-ios
418 lines
20 KiB
Swift
418 lines
20 KiB
Swift
//
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// ProfileViewModel.swift
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// Mastodon
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//
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// Created by MainasuK Cirno on 2021-3-29.
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//
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import os.log
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import UIKit
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import Combine
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import CoreDataStack
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import MastodonSDK
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// please override this base class
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class ProfileViewModel: NSObject {
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typealias UserID = String
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var disposeBag = Set<AnyCancellable>()
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var observations = Set<NSKeyValueObservation>()
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private var mastodonUserObserver: AnyCancellable?
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private var currentMastodonUserObserver: AnyCancellable?
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// input
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let context: AppContext
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let mastodonUser: CurrentValueSubject<MastodonUser?, Never>
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let currentMastodonUser = CurrentValueSubject<MastodonUser?, Never>(nil)
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let viewDidAppear = PassthroughSubject<Void, Never>()
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// output
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let domain: CurrentValueSubject<String?, Never>
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let userID: CurrentValueSubject<UserID?, Never>
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let bannerImageURL: CurrentValueSubject<URL?, Never>
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let avatarImageURL: CurrentValueSubject<URL?, Never>
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let name: CurrentValueSubject<String?, Never>
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let username: CurrentValueSubject<String?, Never>
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let bioDescription: CurrentValueSubject<String?, Never>
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let url: CurrentValueSubject<String?, Never>
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let statusesCount: CurrentValueSubject<Int?, Never>
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let followingCount: CurrentValueSubject<Int?, Never>
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let followersCount: CurrentValueSubject<Int?, Never>
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let fileds: CurrentValueSubject<[Mastodon.Entity.Field], Never>
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let emojiDict: CurrentValueSubject<MastodonStatusContent.EmojiDict, Never>
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let protected: CurrentValueSubject<Bool?, Never>
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let suspended: CurrentValueSubject<Bool, Never>
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let isEditing = CurrentValueSubject<Bool, Never>(false)
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let isUpdating = CurrentValueSubject<Bool, Never>(false)
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let relationshipActionOptionSet = CurrentValueSubject<RelationshipActionOptionSet, Never>(.none)
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let isFollowedBy = CurrentValueSubject<Bool, Never>(false)
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let isMuting = CurrentValueSubject<Bool, Never>(false)
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let isBlocking = CurrentValueSubject<Bool, Never>(false)
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let isBlockedBy = CurrentValueSubject<Bool, Never>(false)
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let isRelationshipActionButtonHidden = CurrentValueSubject<Bool, Never>(true)
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let isReplyBarButtonItemHidden = CurrentValueSubject<Bool, Never>(true)
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let isMoreMenuBarButtonItemHidden = CurrentValueSubject<Bool, Never>(true)
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let isMeBarButtonItemsHidden = CurrentValueSubject<Bool, Never>(true)
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let needsPagePinToTop = CurrentValueSubject<Bool, Never>(false)
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init(context: AppContext, optionalMastodonUser mastodonUser: MastodonUser?) {
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self.context = context
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self.mastodonUser = CurrentValueSubject(mastodonUser)
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self.domain = CurrentValueSubject(context.authenticationService.activeMastodonAuthenticationBox.value?.domain)
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self.userID = CurrentValueSubject(mastodonUser?.id)
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self.bannerImageURL = CurrentValueSubject(mastodonUser?.headerImageURL())
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self.avatarImageURL = CurrentValueSubject(mastodonUser?.avatarImageURL())
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self.name = CurrentValueSubject(mastodonUser?.displayNameWithFallback)
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self.username = CurrentValueSubject(mastodonUser?.acctWithDomain)
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self.bioDescription = CurrentValueSubject(mastodonUser?.note)
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self.url = CurrentValueSubject(mastodonUser?.url)
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self.statusesCount = CurrentValueSubject(mastodonUser.flatMap { Int(truncating: $0.statusesCount) })
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self.followingCount = CurrentValueSubject(mastodonUser.flatMap { Int(truncating: $0.followingCount) })
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self.followersCount = CurrentValueSubject(mastodonUser.flatMap { Int(truncating: $0.followersCount) })
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self.protected = CurrentValueSubject(mastodonUser?.locked)
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self.suspended = CurrentValueSubject(mastodonUser?.suspended ?? false)
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self.fileds = CurrentValueSubject(mastodonUser?.fields ?? [])
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self.emojiDict = CurrentValueSubject(mastodonUser?.emojiDict ?? [:])
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super.init()
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relationshipActionOptionSet
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.compactMap { $0.highPriorityAction(except: []) }
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.map { $0 == .none }
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.assign(to: \.value, on: isRelationshipActionButtonHidden)
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.store(in: &disposeBag)
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// bind active authentication
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context.authenticationService.activeMastodonAuthentication
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.sink { [weak self] activeMastodonAuthentication in
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guard let self = self else { return }
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guard let activeMastodonAuthentication = activeMastodonAuthentication else {
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self.domain.value = nil
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self.currentMastodonUser.value = nil
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return
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}
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self.domain.value = activeMastodonAuthentication.domain
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self.currentMastodonUser.value = activeMastodonAuthentication.user
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}
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.store(in: &disposeBag)
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// query relationship
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let mastodonUserID = self.mastodonUser.map { $0?.id }
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let pendingRetryPublisher = CurrentValueSubject<TimeInterval, Never>(1)
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Publishers.CombineLatest3(
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mastodonUserID.removeDuplicates().eraseToAnyPublisher(),
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context.authenticationService.activeMastodonAuthenticationBox.eraseToAnyPublisher(),
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pendingRetryPublisher.eraseToAnyPublisher()
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)
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.compactMap { mastodonUserID, activeMastodonAuthenticationBox, _ -> (String, AuthenticationService.MastodonAuthenticationBox)? in
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guard let mastodonUserID = mastodonUserID, let activeMastodonAuthenticationBox = activeMastodonAuthenticationBox else { return nil }
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guard mastodonUserID != activeMastodonAuthenticationBox.userID else { return nil }
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return (mastodonUserID, activeMastodonAuthenticationBox)
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}
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.setFailureType(to: Error.self) // allow failure
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.flatMap { mastodonUserID, activeMastodonAuthenticationBox -> AnyPublisher<Mastodon.Response.Content<[Mastodon.Entity.Relationship]>, Error> in
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let domain = activeMastodonAuthenticationBox.domain
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: [Relationship] fetch for user %s", ((#file as NSString).lastPathComponent), #line, #function, mastodonUserID)
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return self.context.apiService.relationship(domain: domain, accountIDs: [mastodonUserID], authorizationBox: activeMastodonAuthenticationBox)
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//.retry(3)
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.eraseToAnyPublisher()
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}
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.sink { completion in
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switch completion {
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case .failure(let error):
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: [Relationship] update fail: %s", ((#file as NSString).lastPathComponent), #line, #function, error.localizedDescription)
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case .finished:
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break
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}
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} receiveValue: { response in
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: [Relationship] update success", ((#file as NSString).lastPathComponent), #line, #function)
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// there are seconds delay after request follow before requested -> following. Query again when needs
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guard let relationship = response.value.first else { return }
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if relationship.requested == true {
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let delay = pendingRetryPublisher.value
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DispatchQueue.main.asyncAfter(deadline: .now() + delay) { [weak self] in
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guard let _ = self else { return }
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pendingRetryPublisher.value = min(2 * delay, 60)
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: [Relationship] fetch again due to pending", ((#file as NSString).lastPathComponent), #line, #function)
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}
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}
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}
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.store(in: &disposeBag)
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setup()
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}
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}
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extension ProfileViewModel {
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private func setup() {
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Publishers.CombineLatest(
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mastodonUser.eraseToAnyPublisher(),
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currentMastodonUser.eraseToAnyPublisher()
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)
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.receive(on: DispatchQueue.main)
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.sink { [weak self] mastodonUser, currentMastodonUser in
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guard let self = self else { return }
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// Update view model attribute
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self.update(mastodonUser: mastodonUser)
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self.update(mastodonUser: mastodonUser, currentMastodonUser: currentMastodonUser)
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// Setup observer for user
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if let mastodonUser = mastodonUser {
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// setup observer
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self.mastodonUserObserver = ManagedObjectObserver.observe(object: mastodonUser)
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.sink { completion in
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switch completion {
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case .failure(let error):
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assertionFailure(error.localizedDescription)
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case .finished:
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assertionFailure()
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}
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} receiveValue: { [weak self] change in
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guard let self = self else { return }
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guard let changeType = change.changeType else { return }
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switch changeType {
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case .update:
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self.update(mastodonUser: mastodonUser)
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self.update(mastodonUser: mastodonUser, currentMastodonUser: currentMastodonUser)
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case .delete:
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// TODO:
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break
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}
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}
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} else {
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self.mastodonUserObserver = nil
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}
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// Setup observer for user
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if let currentMastodonUser = currentMastodonUser {
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// setup observer
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self.currentMastodonUserObserver = ManagedObjectObserver.observe(object: currentMastodonUser)
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.sink { completion in
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switch completion {
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case .failure(let error):
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assertionFailure(error.localizedDescription)
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case .finished:
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assertionFailure()
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}
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} receiveValue: { [weak self] change in
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guard let self = self else { return }
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guard let changeType = change.changeType else { return }
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switch changeType {
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case .update:
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self.update(mastodonUser: mastodonUser, currentMastodonUser: currentMastodonUser)
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case .delete:
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// TODO:
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break
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}
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}
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} else {
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self.currentMastodonUserObserver = nil
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}
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}
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.store(in: &disposeBag)
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}
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private func update(mastodonUser: MastodonUser?) {
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self.userID.value = mastodonUser?.id
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self.bannerImageURL.value = mastodonUser?.headerImageURL()
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self.avatarImageURL.value = mastodonUser?.avatarImageURL()
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self.name.value = mastodonUser?.displayNameWithFallback
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self.username.value = mastodonUser?.acctWithDomain
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self.bioDescription.value = mastodonUser?.note
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self.url.value = mastodonUser?.url
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self.statusesCount.value = mastodonUser.flatMap { Int(truncating: $0.statusesCount) }
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self.followingCount.value = mastodonUser.flatMap { Int(truncating: $0.followingCount) }
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self.followersCount.value = mastodonUser.flatMap { Int(truncating: $0.followersCount) }
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self.protected.value = mastodonUser?.locked
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self.suspended.value = mastodonUser?.suspended ?? false
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self.fileds.value = mastodonUser?.fields ?? []
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self.emojiDict.value = mastodonUser?.emojiDict ?? [:]
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}
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private func update(mastodonUser: MastodonUser?, currentMastodonUser: MastodonUser?) {
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guard let mastodonUser = mastodonUser,
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let currentMastodonUser = currentMastodonUser else {
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// set relationship
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self.relationshipActionOptionSet.value = .none
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self.isFollowedBy.value = false
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self.isMuting.value = false
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self.isBlocking.value = false
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self.isBlockedBy.value = false
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// set bar button item state
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self.isReplyBarButtonItemHidden.value = true
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self.isMoreMenuBarButtonItemHidden.value = true
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self.isMeBarButtonItemsHidden.value = true
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return
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}
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if mastodonUser == currentMastodonUser {
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self.relationshipActionOptionSet.value = [.edit]
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// set bar button item state
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self.isReplyBarButtonItemHidden.value = true
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self.isMoreMenuBarButtonItemHidden.value = true
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self.isMeBarButtonItemsHidden.value = false
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} else {
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// set with follow action default
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var relationshipActionSet = RelationshipActionOptionSet([.follow])
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if mastodonUser.locked {
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relationshipActionSet.insert(.request)
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}
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if mastodonUser.suspended {
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relationshipActionSet.insert(.suspended)
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}
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let isFollowing = mastodonUser.followingBy.flatMap { $0.contains(currentMastodonUser) } ?? false
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if isFollowing {
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relationshipActionSet.insert(.following)
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}
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: [Relationship] update %s isFollowing: %s", ((#file as NSString).lastPathComponent), #line, #function, mastodonUser.id, isFollowing.description)
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let isPending = mastodonUser.followRequestedBy.flatMap { $0.contains(currentMastodonUser) } ?? false
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if isPending {
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relationshipActionSet.insert(.pending)
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}
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: [Relationship] update %s isPending: %s", ((#file as NSString).lastPathComponent), #line, #function, mastodonUser.id, isPending.description)
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let isFollowedBy = currentMastodonUser.followingBy.flatMap { $0.contains(mastodonUser) } ?? false
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self.isFollowedBy.value = isFollowedBy
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: [Relationship] update %s isFollowedBy: %s", ((#file as NSString).lastPathComponent), #line, #function, mastodonUser.id, isFollowedBy.description)
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let isMuting = mastodonUser.mutingBy.flatMap { $0.contains(currentMastodonUser) } ?? false
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if isMuting {
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relationshipActionSet.insert(.muting)
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}
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self.isMuting.value = isMuting
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: [Relationship] update %s isMuting: %s", ((#file as NSString).lastPathComponent), #line, #function, mastodonUser.id, isMuting.description)
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let isBlocking = mastodonUser.blockingBy.flatMap { $0.contains(currentMastodonUser) } ?? false
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if isBlocking {
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relationshipActionSet.insert(.blocking)
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}
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self.isBlocking.value = isBlocking
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: [Relationship] update %s isBlocking: %s", ((#file as NSString).lastPathComponent), #line, #function, mastodonUser.id, isBlocking.description)
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let isBlockedBy = currentMastodonUser.blockingBy.flatMap { $0.contains(mastodonUser) } ?? false
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if isBlockedBy {
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relationshipActionSet.insert(.blocked)
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}
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self.isBlockedBy.value = isBlockedBy
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: [Relationship] update %s isBlockedBy: %s", ((#file as NSString).lastPathComponent), #line, #function, mastodonUser.id, isBlockedBy.description)
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self.relationshipActionOptionSet.value = relationshipActionSet
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// set bar button item state
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self.isReplyBarButtonItemHidden.value = isBlocking || isBlockedBy
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self.isMoreMenuBarButtonItemHidden.value = false
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self.isMeBarButtonItemsHidden.value = true
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}
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}
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}
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extension ProfileViewModel {
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enum RelationshipAction: Int, CaseIterable {
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case none // set hide from UI
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case follow
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case reqeust
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case pending
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case following
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case muting
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case blocked
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case blocking
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case suspended
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case edit
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case editing
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case updating
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var option: RelationshipActionOptionSet {
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return RelationshipActionOptionSet(rawValue: 1 << rawValue)
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}
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}
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// construct option set on the enum for safe iterator
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struct RelationshipActionOptionSet: OptionSet {
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let rawValue: Int
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static let none = RelationshipAction.none.option
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static let follow = RelationshipAction.follow.option
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static let request = RelationshipAction.reqeust.option
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static let pending = RelationshipAction.pending.option
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static let following = RelationshipAction.following.option
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static let muting = RelationshipAction.muting.option
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static let blocked = RelationshipAction.blocked.option
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static let blocking = RelationshipAction.blocking.option
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static let suspended = RelationshipAction.suspended.option
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static let edit = RelationshipAction.edit.option
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static let editing = RelationshipAction.editing.option
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static let updating = RelationshipAction.updating.option
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static let editOptions: RelationshipActionOptionSet = [.edit, .editing, .updating]
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func highPriorityAction(except: RelationshipActionOptionSet) -> RelationshipAction? {
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let set = subtracting(except)
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for action in RelationshipAction.allCases.reversed() where set.contains(action.option) {
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return action
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}
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return nil
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}
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var title: String {
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guard let highPriorityAction = self.highPriorityAction(except: []) else {
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assertionFailure()
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return " "
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}
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switch highPriorityAction {
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case .none: return " "
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case .follow: return L10n.Common.Controls.Firendship.follow
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case .reqeust: return L10n.Common.Controls.Firendship.request
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case .pending: return L10n.Common.Controls.Firendship.pending
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case .following: return L10n.Common.Controls.Firendship.following
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case .muting: return L10n.Common.Controls.Firendship.muted
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case .blocked: return L10n.Common.Controls.Firendship.follow // blocked by user
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case .blocking: return L10n.Common.Controls.Firendship.blocked
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case .suspended: return L10n.Common.Controls.Firendship.follow
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case .edit: return L10n.Common.Controls.Firendship.editInfo
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case .editing: return L10n.Common.Controls.Actions.done
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case .updating: return " "
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}
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}
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var backgroundColor: UIColor {
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guard let highPriorityAction = self.highPriorityAction(except: []) else {
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assertionFailure()
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return Asset.Colors.Button.normal.color
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}
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switch highPriorityAction {
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case .none: return Asset.Colors.Button.normal.color
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case .follow: return Asset.Colors.Button.normal.color
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case .reqeust: return Asset.Colors.Button.normal.color
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case .pending: return Asset.Colors.Button.normal.color
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case .following: return Asset.Colors.Button.normal.color
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case .muting: return Asset.Colors.Background.alertYellow.color
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case .blocked: return Asset.Colors.Button.normal.color
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case .blocking: return Asset.Colors.Background.danger.color
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case .suspended: return Asset.Colors.Button.normal.color
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case .edit: return Asset.Colors.Button.normal.color
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case .editing: return Asset.Colors.Button.normal.color
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case .updating: return Asset.Colors.Button.normal.color
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}
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}
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}
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}
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