//
//  AppDelegate.swift
//  Em-call
//
//  Created by Alex Sh on 13.02.2022.
//

import UIKit
import CoreData

@main
class AppDelegate: UIResponder, UIApplicationDelegate {
   /* - (ObjCBool)application:(_ application: UIApplication, didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
    {
        // Override point for customization after application launch.
        
        _window=[[UIWindow alloc] initWithFrame:[[UIScreen  mainScreen] bounds]];
        xScreen=[[UIScreen  mainScreen] bounds].size.width;
        yScreen=[[UIScreen  mainScreen] bounds].size.height;

        MainController = [[ViewController alloc]init];
         _window.rootViewController = MainController;
        
        navController=[[UINavigationController alloc] initWithRootViewController:MainController];
        [self.window setRootViewController:navController];
    }*/
    var window:UIWindow?
   // func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]? = nil) -> Bool {
           /* window = UIWindow (frame:UIScreen.main.bounds);
            window?.rootViewController = StartViewController() as? UIViewController
             window?.rootViewController?.show(window.v, sender: nil)
            */
            let storyboard: UIStoryboard
             if #available(iOS 9, *, *) {
                 storyboard = UIStoryboard(name: "Main", bundle: nil)
             } else {
                 storyboard = UIStoryboard(name: "MainOld", bundle: nil)
             }
             let mainViewController = storyboard.instantiateInitialViewController()
             window?.rootViewController = mainViewController
            
            window?.makeKeyAndVisible()
          
        return true
    }

    // MARK: UISceneSession Lifecycle

    @available(iOS 13.0, *)
    func application(_ application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration {
        // Called when a new scene session is being created.
        // Use this method to select a configuration to create the new scene with.
        return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role)
    }

    @available(iOS 13.0, *)
    func application(_ application: UIApplication, didDiscardSceneSessions sceneSessions: Set<UISceneSession>) {
        // Called when the user discards a scene session.
        // If any sessions were discarded while the application was not running, this will be called shortly after application:didFinishLaunchingWithOptions.
        // Use this method to release any resources that were specific to the discarded scenes, as they will not return.
    }

    // MARK: - Core Data stack

    @available(iOS 10.0, *)
    lazy var persistentContainer: NSPersistentContainer = {
        /*
         The persistent container for the application. This implementation
         creates and returns a container, having loaded the store for the
         application to it. This property is optional since there are legitimate
         error conditions that could cause the creation of the store to fail.
        */
        let container = NSPersistentContainer(name: "Em_call")
        container.loadPersistentStores(completionHandler: { (storeDescription, error) in
            if let error = error as NSError? {
                // Replace this implementation with code to handle the error appropriately.
                // fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
                 
                /*
                 Typical reasons for an error here include:
                 * The parent directory does not exist, cannot be created, or disallows writing.
                 * The persistent store is not accessible, due to permissions or data protection when the device is locked.
                 * The device is out of space.
                 * The store could not be migrated to the current model version.
                 Check the error message to determine what the actual problem was.
                 */
                fatalError("Unresolved error \(error), \(error.userInfo)")
            }
        })
        return container
    }()

    // MARK: - Core Data Saving support

    func saveContext () {
        if #available(iOS 10.0, *) {
            let context = persistentContainer.viewContext
            if context.hasChanges {
                do {
                    try context.save()
                } catch {
                    // Replace this implementation with code to handle the error appropriately.
                    // fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
                    let nserror = error as NSError
                    fatalError("Unresolved error \(nserror), \(nserror.userInfo)")
                }
            }
        } else {
            // Fallback on earlier versions
        }

    }

}

