//
//  PrefsSceneDelegate.swift
//  Reader
//
//  Created by Shadowfacts on 1/16/22.
//

#if targetEnvironment(macCatalyst)
import UIKit
import SwiftUI

class PrefsSceneDelegate: UIResponder, UIWindowSceneDelegate {
    
    var window: UIWindow?
    
    func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
        guard let windowScene = scene as? UIWindowScene else {
            return
        }
        
        window = UIWindow(windowScene: windowScene)
        window!.tintColor = .appTintColor
        windowScene.sizeRestrictions?.minimumSize = CGSize(width: 640, height: 480)
        windowScene.sizeRestrictions?.maximumSize = CGSize(width: 640, height: 480)
        
        window!.rootViewController = UIHostingController(rootView: PrefsView())
        
        if let titlebar = windowScene.titlebar {
            titlebar.toolbarStyle = .preference
            titlebar.toolbar = NSToolbar(identifier: .init("ReaderPrefsToolbar"))
            titlebar.toolbar!.delegate = self
            titlebar.toolbar!.allowsUserCustomization = false
        }
        
        window!.makeKeyAndVisible()
        
        NotificationCenter.default.addObserver(self, selector: #selector(updateAppearance), name: .appearanceChanged, object: nil)
        updateAppearance()
    }
    
    @objc private func updateAppearance() {
        switch Preferences.shared.appearance {
        case .unspecified:
            window!.overrideUserInterfaceStyle = .unspecified
        case .light:
            window!.overrideUserInterfaceStyle = .light
        case .dark:
            window!.overrideUserInterfaceStyle = .dark
        }
    }

}

extension PrefsSceneDelegate: NSToolbarDelegate {
    func toolbar(_ toolbar: NSToolbar, itemForItemIdentifier itemIdentifier: NSToolbarItem.Identifier, willBeInsertedIntoToolbar flag: Bool) -> NSToolbarItem? {
        return nil
    }
    
    func toolbarAllowedItemIdentifiers(_ toolbar: NSToolbar) -> [NSToolbarItem.Identifier] {
        return []
    }
    
    func toolbarDefaultItemIdentifiers(_ toolbar: NSToolbar) -> [NSToolbarItem.Identifier] {
        return []
    }
}

#endif