//
//  AppDelegate.swift
//  TodoAndNote
//
//  Created by Yuumi Yoshida on 2018/10/12.
//  Copyright © 2018年 Yuumi Yoshida. All rights reserved.
//

import UIKit
import IQKeyboardManagerSwift
import GoogleSignIn

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate, UISplitViewControllerDelegate {

    var window: UIWindow?

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        
        IQKeyboardManager.shared.enable = true

        // Override point for customization after application launch.
        let splitViewController = window!.rootViewController as! UISplitViewController
        let navigationController = splitViewController.viewControllers[splitViewController.viewControllers.count-1] as! UINavigationController
        navigationController.topViewController!.navigationItem.leftBarButtonItem = splitViewController.displayModeButtonItem
        splitViewController.delegate = self
        
        if let clientId = externalURLScheme() {
            GIDSignIn.sharedInstance().clientID = reverseDomainName(clientId)
        }
  
        return true
    }

    func applicationWillResignActive(_ application: UIApplication) {
        // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
        // Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game.
    }

    func applicationDidEnterBackground(_ application: UIApplication) {
        // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
        // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
    }

    func applicationWillEnterForeground(_ application: UIApplication) {
        DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) {
            NotificationCenter.default.post(name: .reloadDocument, object: nil)
        }
    }

    func applicationDidBecomeActive(_ application: UIApplication) {
        // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
    }

    func applicationWillTerminate(_ application: UIApplication) {
        // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
    }

    func application(_ application: UIApplication, open url: URL, sourceApplication: String?, annotation: Any) -> Bool {
        return GIDSignIn.sharedInstance().handle(url, sourceApplication: sourceApplication, annotation: annotation)
    }
    
    func application(_ app: UIApplication, open url: URL, options: [UIApplication.OpenURLOptionsKey : Any] = [:]) -> Bool {
        let sourceApplication = options[UIApplication.OpenURLOptionsKey.sourceApplication] as? String
        let annotation = options[UIApplication.OpenURLOptionsKey.annotation]
        return GIDSignIn.sharedInstance().handle(url, sourceApplication: sourceApplication, annotation: annotation)
    }

    // MARK: - Split view

    func splitViewController(_ splitViewController: UISplitViewController, collapseSecondary secondaryViewController:UIViewController, onto primaryViewController:UIViewController) -> Bool {
        guard let secondaryAsNavController = secondaryViewController as? UINavigationController else { return false }
        guard let topAsDetailController = secondaryAsNavController.topViewController as? DetailViewController else { return false }
        if topAsDetailController.fileId == nil {
            // Return true to indicate that we have handled the collapse by doing nothing; the secondary controller will be discarded.
            return true
        }
        return false
    }

    private func externalURLScheme() -> String? {
        guard let urlTypes = Bundle.main.infoDictionary?["CFBundleURLTypes"] as? [AnyObject],
            let urlTypeDictionary = urlTypes.first as? [String: AnyObject],
            let urlSchemes = urlTypeDictionary["CFBundleURLSchemes"] as? [AnyObject],
            let externalURLScheme = urlSchemes.first as? String else { return nil }
        
        return externalURLScheme
    }
    
    private func reverseDomainName(_ domainName: String) -> String {
        return Array(domainName.split(separator: ".").reversed()).joined(separator: ".")
    }
}
