//
//  AppDelegate.swift
//  Kalker
//

import UIKit
import CoreData
import UserNotifications
import Firebase
import FirebaseMessaging
import Alamofire
import SwiftyJSON

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?
    let defaults: UserDefaults = UserDefaults.standard
    let gcmMessageIDKey = "gcm.message_id"
    var managedObjectContext: NSManagedObjectContext!
    var loginUser = [User]()
    var idUser: Int32!
    var typeAccount: Int16!

    func application(_ application: UIApplication,
                     didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
        managedObjectContext = (UIApplication.shared.delegate as! AppDelegate).persistentContainer.viewContext
        
        FirebaseApp.configure()
        Messaging.messaging().delegate = self

        if #available(iOS 10.0, *) {
            // For iOS 10 display notification (sent via APNS)
            UNUserNotificationCenter.current().delegate = self
            
            let authOptions: UNAuthorizationOptions = [.alert, .badge, .sound]
            UNUserNotificationCenter.current().requestAuthorization(
                options: authOptions,
                completionHandler: {_, _ in })
        } else {
            let settings: UIUserNotificationSettings =
                UIUserNotificationSettings(types: [.alert, .badge, .sound], categories: nil)
            application.registerUserNotificationSettings(settings)
        }
        
        application.registerForRemoteNotifications()

        return true
    }
    
    func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any]) {

        // With swizzling disabled you must let Messaging know about the message, for Analytics
        //Messaging.messaging().appDidReceiveMessage(userInfo)
        
        if let messageID = userInfo[gcmMessageIDKey] {
            print("Message ID: \(messageID)")
        }
        
        // Print full message.
        print(userInfo)
    }
    
    func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any],
                     fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {

        // With swizzling disabled you must let Messaging know about the message, for Analytics
        //Messaging.messaging().appDidReceiveMessage(userInfo)

        if let messageID = userInfo[gcmMessageIDKey] {
            print("Message ID: \(messageID)")
        }

        print(userInfo)
        
        completionHandler(UIBackgroundFetchResult.newData)
    }

    func application(_ application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: Error) {
        print("Unable to register for remote notifications: \(error.localizedDescription)")
    }
    
    func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
        print("APNs token retrieved: \(deviceToken)")
        
        // With swizzling disabled you must set the APNs token here.
        //Messaging.messaging().apnsToken = deviceToken
    }

    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) {
        // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
    }

    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:.
        self.saveContext()
    }
    
    // MARK: - Core Data stack
    
    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: "KalkerModel")
        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 () {
        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)")
            }
        }
    }
}

@available(iOS 10, *)
extension AppDelegate : UNUserNotificationCenterDelegate {
    // Receive displayed notifications for iOS 10 devices.
    func userNotificationCenter(_ center: UNUserNotificationCenter,
                                willPresent notification: UNNotification,
                                withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
        let userInfo = notification.request.content.userInfo
        
        if let navigate = userInfo["navigate"] as? String {
            print("Navigate to: \(navigate)")
            
            if navigate == "caregiverview" {
                NotificationCenter.default.post(name: Notification.Name("SendCaregiverNotif"), object: nil)
            }
            else if navigate == "patientview" {
                guard let aps = userInfo["aps"] as? [String : AnyObject]
                    else {
                        print("Error parsing aps")
                        return
                }
                
                if let alert = aps["alert"] as? [String : String] {
                    defaults.set(alert["title"]!, forKey: "patientNotifTitle")
                    defaults.set(alert["body"]!, forKey: "patientNotifBody")
                    
                    NotificationCenter.default.post(name: Notification.Name("SendPatientNotif"), object: nil)
                }
            }
        }

        //print(userInfo)
        completionHandler([])
    }
    
    func userNotificationCenter(_ center: UNUserNotificationCenter,
                                didReceive response: UNNotificationResponse,
                                withCompletionHandler completionHandler: @escaping () -> Void) {
        let userInfo = response.notification.request.content.userInfo
        
        if let navigate = userInfo["navigate"] as? String {
            print("Navigate to: \(navigate)")
            
            if navigate == "caregiverview" {
                NotificationCenter.default.post(name: Notification.Name("SendCaregiverNotif"), object: nil)
            }
            else if navigate == "patientview" {
                guard let aps = userInfo["aps"] as? [String : AnyObject]
                    else {
                        print("Error parsing aps")
                        return
                }
                
                if let alert = aps["alert"] as? [String : String] {
                    defaults.set(alert["title"]!, forKey: "patientNotifTitle")
                    defaults.set(alert["body"]!, forKey: "patientNotifBody")
                    
                    NotificationCenter.default.post(name: Notification.Name("SendPatientNotif"), object: nil)
                }
            }
        }
        
        //print(userInfo)
        completionHandler()
    }
}

extension AppDelegate : MessagingDelegate {
    func messaging(_ messaging: Messaging, didRefreshRegistrationToken fcmToken: String) {
        print("Firebase registration token: \(fcmToken)")
        defaults.set(fcmToken, forKey: "tokenIOS")
        
        let fetchRequest: NSFetchRequest<User> = User.fetchRequest()
        fetchRequest.predicate = NSPredicate(format: "isLogin == %@", NSNumber(booleanLiteral: true))
        
        do {
            loginUser = try managedObjectContext.fetch(fetchRequest)
            
            if loginUser.count > 0 {
                idUser = loginUser.first?.id
                typeAccount = loginUser.first?.type
                
                let parameters: Parameters = ["token": fcmToken,
                                              "id": idUser!,
                                              "type": typeAccount!
                ]
                
                Alamofire.request("https://kalkerapp.pl/api/refreshToken.php", method: .post, parameters: parameters)
                    .responseJSON { response in
                        if let jsonData = response.result.value {
                            let json = JSON(jsonData)
                            print(json)
                            
                            let saveUser = User(context: self.managedObjectContext)
                            saveUser.tokenIOS = Messaging.messaging().fcmToken!
                            
                            do {
                                try self.managedObjectContext.save()
                            } catch {
                                print("Błąd podczas odświeżania tokenu \(error.localizedDescription)")
                            }
                        }
                }
            }
            
        } catch {
            print("Błąd podczas ładowania informacji o użytkowniku \(error.localizedDescription)")
        }
    }

    func messaging(_ messaging: Messaging, didReceive remoteMessage: MessagingRemoteMessage) {
        print("Received data message: \(remoteMessage.appData)")
    }
}

