metatext-app-ios-iphone-ipad/iOS/View Models/TabNavigationViewModel.swift

86 lines
2.5 KiB
Swift

// Copyright © 2020 Metabolist. All rights reserved.
import Foundation
import Combine
class TabNavigationViewModel: ObservableObject {
@Published private(set) var identity: Identity
@Published private(set) var recentIdentities = [Identity]()
@Published var presentingSecondaryNavigation = false
@Published var alertItem: AlertItem?
var selectedTab: Tab? = .timelines
private let identityService: IdentityService
private var cancellables = Set<AnyCancellable>()
init(identityService: IdentityService) {
self.identityService = identityService
identity = identityService.identity
identityService.$identity.dropFirst().assign(to: &$identity)
identityService.recentIdentitiesObservation()
.assignErrorsToAlertItem(to: \.alertItem, on: self)
.assign(to: &$recentIdentities)
}
}
extension TabNavigationViewModel {
func refreshIdentity() {
if identityService.isAuthorized {
identityService.verifyCredentials()
.assignErrorsToAlertItem(to: \.alertItem, on: self)
.sink(receiveValue: {})
.store(in: &cancellables)
if identity.preferences.useServerPostingReadingPreferences {
identityService.refreshServerPreferences()
.assignErrorsToAlertItem(to: \.alertItem, on: self)
.sink(receiveValue: {})
.store(in: &cancellables)
}
}
identityService.refreshInstance()
.assignErrorsToAlertItem(to: \.alertItem, on: self)
.sink(receiveValue: {})
.store(in: &cancellables)
}
func secondaryNavigationViewModel() -> SecondaryNavigationViewModel {
SecondaryNavigationViewModel(identityService: identityService)
}
}
extension TabNavigationViewModel {
enum Tab: CaseIterable {
case timelines
case search
case notifications
case messages
}
}
extension TabNavigationViewModel.Tab {
var title: String {
switch self {
case .timelines: return "Timelines"
case .search: return "Search"
case .notifications: return "Notifications"
case .messages: return "Messages"
}
}
var systemImageName: String {
switch self {
case .timelines: return "newspaper"
case .search: return "magnifyingglass"
case .notifications: return "bell"
case .messages: return "envelope"
}
}
}
extension TabNavigationViewModel.Tab: Identifiable {
var id: Self { self }
}