PreferencesModel.swift
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PreferencesModel.swift
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	import SwiftUI

	enum Appearance: Int {
	case system = 0
	case light = 1
	case dark = 2
	}

	class PreferencesModel: ObservableObject {
	private let defaults = UserDefaults.shared

	@Published var selectedColorScheme: ColorScheme?
	@Published var appearance: Int = 0
	@Published var font: Int = 0 {
	didSet {
	defaults.set(font, forKey: WFDefaults.defaultFontIntegerKey)
	}
	}

	@available(iOSApplicationExtension, unavailable)
	func updateAppearance(to appearance: Appearance) {
	#if os(iOS)
	var window: UIWindow? {
	guard let scene = UIApplication.shared.connectedScenes.first,
	let windowSceneDelegate = scene.delegate as? UIWindowSceneDelegate,
	let window = windowSceneDelegate.window else {
	return nil
	}
	return window
	}
	#endif

	switch appearance {
	case .light:
	#if os(macOS)
	NSApp.appearance = NSAppearance(named: .aqua)
	#else
	window?.overrideUserInterfaceStyle = .light
	#endif
	case .dark:
	#if os(macOS)
	NSApp.appearance = NSAppearance(named: .darkAqua)
	#else
	window?.overrideUserInterfaceStyle = .dark
	#endif
	default:
	#if os(macOS)
	NSApp.appearance = nil
	#else
	window?.overrideUserInterfaceStyle = .unspecified
	#endif
	}
	}
	}