Add an option to switch between flatten/grouped library view

By default, a library shows its items in a flatten view. This patch
further adds an option that allows users to show items grouped in their
own folders as well.

Shared/Generated/Strings.swift

@@ -324,6 +324,8 @@ internal enum L10n {
   internal static var settings: String { return L10n.tr("Localizable", "settings") }
   /// Show Cast & Crew
   internal static var showCastAndCrew: String { return L10n.tr("Localizable", "showCastAndCrew") }
+  /// Show Flatten Library View
+  internal static var showFlattenView: String { return L10n.tr("Localizable", "showFlattenView") }
   /// Show Missing Episodes
   internal static var showMissingEpisodes: String { return L10n.tr("Localizable", "showMissingEpisodes") }
   /// Show Missing Seasons

Shared/SwiftfinStore/SwiftfinStoreDefaults.swift

@@ -41,6 +41,7 @@ extension Defaults.Keys {
 	// Customize settings
 	static let showPosterLabels = Key<Bool>("showPosterLabels", default: true, suite: SwiftfinStore.Defaults.generalSuite)
 	static let showCastAndCrew = Key<Bool>("showCastAndCrew", default: true, suite: SwiftfinStore.Defaults.generalSuite)
+	static let showFlattenView = Key<Bool>("showFlattenView", default: true, suite: SwiftfinStore.Defaults.generalSuite)
 
 	// Video player / overlay settings
 	static let overlayType = Key<OverlayType>("overlayType", default: .normal, suite: SwiftfinStore.Defaults.generalSuite)

Shared/ViewModels/LibraryViewModel.swift

@@ -7,6 +7,7 @@
 //
 
 import Combine
+import Defaults
 import Foundation
 import JellyfinAPI
 import SwiftUICollection
@@ -94,10 +95,16 @@ final class LibraryViewModel: ViewModel {
 			genreIDs = filters.withGenres.compactMap(\.id)
 		}
 		let sortBy = filters.sortBy.map(\.rawValue)
-		let queryRecursive = filters.filters.contains(.isFavorite) ||
+		let queryRecursive = Defaults[.showFlattenView] || filters.filters.contains(.isFavorite) ||
 			self.person != nil ||
 			self.genre != nil ||
 			self.studio != nil
+		let includeItemTypes: [String]
+		if filters.filters.contains(.isFavorite) {
+			includeItemTypes = ["Movie", "Series", "Season", "Episode", "BoxSet"]
+		} else {
+			includeItemTypes = ["Movie", "Series", "BoxSet"] + (Defaults[.showFlattenView] ? [] : ["Folder"])
+		}
 
 		ItemsAPI.getItemsByUserId(userId: SessionManager.main.currentLogin.user.id, startIndex: currentPage * pageItemSize,
 		                          limit: pageItemSize,
@@ -114,9 +121,7 @@ final class LibraryViewModel: ViewModel {
 		                          	.people,
 		                          	.chapters,
 		                          ],
-		                          includeItemTypes: filters.filters
+		                          includeItemTypes: includeItemTypes,
-		                          	.contains(.isFavorite) ? ["Movie", "Series", "Season", "Episode", "BoxSet"] :
-		                          	["Movie", "Series", "BoxSet", "Folder"],
 		                          filters: filters.filters,
 		                          sortBy: sortBy,
 		                          tags: filters.tags,

Swiftfin tvOS/Views/SettingsView/CustomizeViewsSettings.swift

@@ -15,6 +15,8 @@ struct CustomizeViewsSettings: View {
 	var showPosterLabels
 	@Default(.showCastAndCrew)
 	var showCastAndCrew
+	@Default(.showFlattenView)
+	var showFlattenView
 
 	var body: some View {
 		Form {
@@ -24,6 +26,7 @@ struct CustomizeViewsSettings: View {
 
 				// TODO: Uncomment when cast and crew implemented in item views
 				//                Toggle(L10n.showCastAndCrew, isOn: $showCastAndCrew)
+				Toggle(L10n.showFlattenView, isOn: $showFlattenView)
 
 			} header: {
 				L10n.customize.text

Swiftfin/Views/SettingsView/CustomizeViewsSettings.swift

@@ -15,6 +15,8 @@ struct CustomizeViewsSettings: View {
 	var showPosterLabels
 	@Default(.showCastAndCrew)
 	var showCastAndCrew
+	@Default(.showFlattenView)
+	var showFlattenView
 
 	var body: some View {
 		Form {
@@ -22,6 +24,7 @@ struct CustomizeViewsSettings: View {
 
 				Toggle(L10n.showPosterLabels, isOn: $showPosterLabels)
 				Toggle(L10n.showCastAndCrew, isOn: $showCastAndCrew)
+				Toggle(L10n.showFlattenView, isOn: $showFlattenView)
 
 			} header: {
 				L10n.customize.text