import Defaults import SwiftUI struct AppTabNavigation: View { @ObservedObject private var accounts = AccountsModel.shared @ObservedObject private var navigation = NavigationModel.shared private var player = PlayerModel.shared @ObservedObject private var feed = FeedModel.shared @ObservedObject private var subscriptions = SubscribedChannelsModel.shared @ObservedObject private var feedCount = UnwatchedFeedCountModel.shared @Default(.showHome) private var showHome @Default(.showDocuments) private var showDocuments @Default(.showOpenActionsToolbarItem) private var showOpenActionsToolbarItem @Default(.visibleSections) private var visibleSections let persistenceController = PersistenceController.shared var body: some View { TabView(selection: navigation.tabSelectionBinding) { Group { if showHome { homeNavigationView } if showDocuments { documentsNavigationView } if !accounts.isEmpty { if subscriptionsVisible { subscriptionsNavigationView } if visibleSections.contains(.popular), accounts.app.supportsPopular, visibleSections.count < 5 { popularNavigationView } if visibleSections.contains(.trending) { trendingNavigationView } if playlistsVisible { playlistsNavigationView } searchNavigationView } } .modifier(PlayerOverlayModifier()) } .onAppear { feed.calculateUnwatchedFeed() } .onChange(of: accounts.current) { _ in feed.calculateUnwatchedFeed() } .id(accounts.current?.id ?? "") .overlay(playlistView) .overlay(channelView) .environment(\.navigationStyle, .tab) } private var homeNavigationView: some View { NavigationView { LazyView(HomeView()) .toolbar { toolbarContent } } .tabItem { Label("Home", systemImage: "house.fill") .accessibility(label: Text("Home")) } .tag(TabSelection.home) } private var documentsNavigationView: some View { NavigationView { LazyView(DocumentsView()) .toolbar { toolbarContent } } .tabItem { Label("Documents", systemImage: "folder") .accessibility(label: Text("Documents")) } .tag(TabSelection.documents) } private var subscriptionsNavigationView: some View { NavigationView { LazyView(SubscriptionsView()) } .tabItem { Label("Subscriptions", systemImage: "star.circle.fill") .accessibility(label: Text("Subscriptions")) } .tag(TabSelection.subscriptions) .backport .badge(feedCount.unwatchedText) } private var subscriptionsVisible: Bool { visibleSections.contains(.subscriptions) && accounts.app.supportsSubscriptions && !(accounts.current?.anonymous ?? true) } private var playlistsVisible: Bool { visibleSections.contains(.playlists) && accounts.app.supportsUserPlaylists && !(accounts.current?.anonymous ?? true) } private var popularNavigationView: some View { NavigationView { LazyView(PopularView()) .toolbar { toolbarContent } } .tabItem { Label("Popular", systemImage: "arrow.up.right.circle.fill") .accessibility(label: Text("Popular")) } .tag(TabSelection.popular) } private var trendingNavigationView: some View { NavigationView { LazyView(TrendingView()) } .tabItem { Label("Trending", systemImage: "chart.bar.fill") .accessibility(label: Text("Trending")) } .tag(TabSelection.trending) } private var playlistsNavigationView: some View { NavigationView { LazyView(PlaylistsView()) } .tabItem { Label("Playlists", systemImage: "list.and.film") .accessibility(label: Text("Playlists")) } .tag(TabSelection.playlists) } private var searchNavigationView: some View { NavigationView { LazyView(SearchView()) } .tabItem { Label("Search", systemImage: "magnifyingglass") .accessibility(label: Text("Search")) } .tag(TabSelection.search) } var toolbarContent: some ToolbarContent { #if os(iOS) Group { ToolbarItemGroup(placement: .navigationBarLeading) { Button(action: { navigation.presentingSettings = true }) { Image(systemName: "gearshape.2") } } ToolbarItemGroup(placement: .navigationBarTrailing) { if showOpenActionsToolbarItem { Button(action: { navigation.presentingOpenVideos = true }) { Label("Open Videos", systemImage: "play.circle.fill") } } AccountViewButton() } } #endif } @ViewBuilder private var channelView: some View { if navigation.presentingChannel { NavigationView { ChannelVideosView(showCloseButton: true) } .environment(\.managedObjectContext, persistenceController.container.viewContext) .environment(\.inChannelView, true) .environment(\.navigationStyle, .tab) .id("channelVideos") .zIndex(player.presentingPlayer ? -1 : 2) .transition(.move(edge: .bottom)) } } @ViewBuilder private var playlistView: some View { if navigation.presentingPlaylist { NavigationView { ChannelPlaylistView(showCloseButton: true) } .environment(\.managedObjectContext, persistenceController.container.viewContext) .id("channelPlaylist") .zIndex(player.presentingPlayer ? -1 : 1) .transition(.move(edge: .bottom)) } } } struct AppTabNavigation_Preview: PreviewProvider { static var previews: some View { AppTabNavigation() } }