//
//  AppDelegate.swift
//  EncuestaMarle
//
//  Created by Tatiana Castro on 4/13/19.
//  Copyright © 2019 Marle. All rights reserved.
//

import UIKit
import CoreData
import AWSSNS
import UserNotifications
import Firebase
import ResearchKit


@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate {

    let SNSPlatformApplicationArn = "arn:aws:sns:us-east-1:227586183436:app/APNS_SANDBOX/MARLE_iOS"
    
    var containerViewController: ResearchContainerViewController? {
        return window?.rootViewController as? ResearchContainerViewController
    }

    var window: UIWindow?
    
    func application(_ application: UIApplication, willFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
        let standardDefaults = UserDefaults.standard
        if standardDefaults.object(forKey: "EncuestaMarleFirstRun") == nil {
            standardDefaults.setValue("EncuestaMarleFirstRun", forKey: "EncuestaMarleFirstRun")
        }
        // UserDefaults.standard.set(false, forKey: "registered")
        let pageControlAppearance = UIPageControl.appearance()
        pageControlAppearance.pageIndicatorTintColor = UIColor.lightGray
        pageControlAppearance.currentPageIndicatorTintColor = UIColor.black
        
        return true
    }
    
    func applicationDidEnterBackground(_ application: UIApplication) {
        UserDefaults.standard.synchronize()
        if ORKPasscodeViewController.isPasscodeStoredInKeychain() {
            // Hide content so it doesn't appear in the app switcher.
            containerViewController?.contentHidden = true
        }
    }
    
    func applicationWillEnterForeground(_ application: UIApplication) {
    }
    

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        
        let credentialsProvider = AWSCognitoCredentialsProvider(regionType:.USEast1, identityPoolId:"us-east-1:b8e84ae3-42e8-4655-a70e-1dcd8d053db5")
        
        let configuration = AWSServiceConfiguration(region:.USEast1, credentialsProvider:credentialsProvider)
        
        AWSServiceManager.default().defaultServiceConfiguration = configuration
        
        registerForPushNotifications(application: application)
        
//        let registered = UserDefaults.standard.bool(forKey: "registered")
//        
//        print("User is registered❓")
//        print(registered)
//        
//        if registered {
//            
//            let mainStoryBoard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
//            
//            let protectedPage = mainStoryBoard.instantiateViewController(withIdentifier: "EncuestaViewController") as! EncuestaViewController
//            window!.rootViewController = protectedPage
//            window!.makeKeyAndVisible()
//        }
                
        return true
    }
    
    func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
        token = ""
        for i in 0..<deviceToken.count {
            token = token + String(format: "%02.2hhx", arguments: [deviceToken[i]])
        }
        print(token)
        UserDefaults.standard.set(token, forKey: "deviceTokenForSNS")
        let sns = AWSSNS.default()
        let request = AWSSNSCreatePlatformEndpointInput()
        request?.token = token
        request?.platformApplicationArn = SNSPlatformApplicationArn
        sns.createPlatformEndpoint(request!).continueWith(executor: AWSExecutor.mainThread(), block: { (task: AWSTask!) -> AnyObject? in
            if task.error != nil {
                print("Error: \(String(describing: task.error))")
            } else {
                let createEndpointResponse = task.result! as AWSSNSCreateEndpointResponse
                if let endpointArnForSNS = createEndpointResponse.endpointArn {
                    print("endpointArn: \(endpointArnForSNS)")
                    UserDefaults.standard.set(endpointArnForSNS, forKey: "endpointArnForSNS")
                    UserDefaults.standard.set(token, forKey: "user_token")
                }
            }
            return nil
        })
    }
    
    func registerForPushNotifications(application: UIApplication) {
        if #available(iOS 10.0, *) {
            UNUserNotificationCenter.current().delegate = self
            UNUserNotificationCenter.current().requestAuthorization(options: [.badge, .sound, .alert], completionHandler: {(granted, error) in
                if (granted)
                {
                    UIApplication.shared.registerForRemoteNotifications()
                }
                else{
                }
            })
        } else {
            let settings = UIUserNotificationSettings(types: [UIUserNotificationType.alert, UIUserNotificationType.badge, UIUserNotificationType.sound], categories: nil)
            application.registerUserNotificationSettings(settings)
            application.registerForRemoteNotifications()
        }
    }
    
    @available(iOS 10.0, *)
    
    func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
        print("User Info = ",notification.request.content.userInfo)
        completionHandler([.alert, .badge, .sound])
    }
        
    @available(iOS 10.0, *)
    
    func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
        
        print("User Info = ",response.notification.request.content.userInfo)
        completionHandler()
    }

    
    func application(_ application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: Error) {
        print(error.localizedDescription)        
    }

    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 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.
        getJsonFromUrl()
    }

    func applicationWillTerminate(_ application: UIApplication) {
        // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
        // Saves changes in the application's managed object context before the application terminates.
        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: "EncuestaMarle")
        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: - URL Scheme Support
    
    func application(_ app: UIApplication, open url: URL, options: [UIApplication.OpenURLOptionsKey : Any] = [:]) -> Bool {
        
        let registered = checkIfRegistered()
        
        if !registered {
            let alertTitle = NSLocalizedString("Please join Tania first", comment: "")
            let alertMessage = NSLocalizedString("Press the 'Join Study' buttton below to register, then open this link again", comment: "")
            let alert = UIAlertController(title: alertTitle, message: alertMessage, preferredStyle: UIAlertController.Style.alert)
            alert.addAction(UIAlertAction(title: "OK", style: UIAlertAction.Style.default, handler: nil))
            self.window?.rootViewController?.present(alert, animated: true, completion: nil)
            
            return false
        }
        
        else {
            
            let host = url.host
            
            // Process the URL.
            guard let components = NSURLComponents(url: url, resolvingAgainstBaseURL: true),
                let params = components.queryItems else {
                    print("Invalid URL or host missing")
                    
                    let alertTitle = NSLocalizedString("Invalid link or resource", comment: "")
                    let alertMessage = NSLocalizedString("Please contact your mentor for further assistance", comment: "")
                    let alert = UIAlertController(title: alertTitle, message: alertMessage, preferredStyle: UIAlertController.Style.alert)
                    alert.addAction(UIAlertAction(title: "OK", style: UIAlertAction.Style.default, handler: nil))
                    self.window?.rootViewController?.present(alert, animated: true, completion: nil)
                    
                    return false
            }
            
            if let id = params.first(where: { $0.name == "id" })?.value {
                print("Host = \(host ?? "Error: No host in URL")")
                print("Registrating user to experience ID = \(id)")
                
                registerToExperience(id: id)
                
                while(newResponseID == false) {}
                newResponseID = false
                
                if response_id == "Error:hash" {
                    
                    let alertTitle = NSLocalizedString("That experience does not exist", comment: "")
                    let alertMessage = NSLocalizedString("Please contact your mentor for further assistance", comment: "")
                    let alert = UIAlertController(title: alertTitle, message: alertMessage, preferredStyle: UIAlertController.Style.alert)
                    alert.addAction(UIAlertAction(title: "OK", style: UIAlertAction.Style.default, handler: nil))
                    self.window?.rootViewController?.present(alert, animated: true, completion: nil)
                    
                    return false
                }
                
                else if response_id == "Success" {
                    
                    let alertTitle = NSLocalizedString("Sucessful registration to experience", comment: "")
                    let alertMessage = NSLocalizedString("Surveys will become available to answer", comment: "")
                    let alert = UIAlertController(title: alertTitle, message: alertMessage, preferredStyle: UIAlertController.Style.alert)
                    alert.addAction(UIAlertAction(title: "OK", style: UIAlertAction.Style.default, handler: nil))
                    self.window?.rootViewController?.present(alert, animated: true, completion: nil)
                    
                    return true
                }
                
                return false
                
            } else {
                print("Encuesta id missing")
                
                let alertTitle = NSLocalizedString("Invalid link or experience ID", comment: "")
                let alertMessage = NSLocalizedString("Please contact your mentor for further assistance", comment: "")
                let alert = UIAlertController(title: alertTitle, message: alertMessage, preferredStyle: UIAlertController.Style.alert)
                alert.addAction(UIAlertAction(title: "OK", style: UIAlertAction.Style.default, handler: nil))
                self.window?.rootViewController?.present(alert, animated: true, completion: nil)
                
                return false
            }
        }
    }

    // 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)")
            }
        }
    }

}

extension AppDelegate: ORKPasscodeDelegate {
    func passcodeViewControllerDidFinish(withSuccess viewController: UIViewController) {
        containerViewController?.contentHidden = false
        viewController.dismiss(animated: true, completion: nil)
    }
    
    func passcodeViewControllerDidFailAuthentication(_ viewController: UIViewController) {
    }
}


extension UIApplication {
  class func topViewController(controller: UIViewController? = UIApplication.shared.keyWindow?.rootViewController) -> UIViewController? {
    if let tabController = controller as? UITabBarController {
      return topViewController(controller: tabController.selectedViewController)
    }
    if let navController = controller as? UINavigationController {
      return topViewController(controller: navController.visibleViewController)
    }
    if let presented = controller?.presentedViewController {
      return topViewController(controller: presented)
    }
    return controller
  }
}


func registerToExperience(id: String) {
    
    let jsonObject: NSMutableDictionary = NSMutableDictionary()
    
    jsonObject.setValue(token, forKey: "token")
    jsonObject.setValue(id, forKey: "id_experiencia")
    
    let request = NSMutableURLRequest(url: NSURL(string: "http://tania.uprrp.edu/inscripcionExperiencia.php")! as URL)
    request.httpMethod = "POST"
    
    let jsonData: NSData
            
    do {
        jsonData = try JSONSerialization.data(withJSONObject: jsonObject, options: JSONSerialization.WritingOptions()) as NSData
        let jsonID = NSString(data: jsonData as Data, encoding: String.Encoding.utf8.rawValue) as! String
        print("✅ ID recieved, sending request...")
        
        let postString = "data=\(jsonID)"
        request.httpBody = postString.data(using: String.Encoding.utf8)
        
        let task = URLSession.shared.dataTask(with: request as URLRequest) {
            data, response, error in
            if error != nil {
                print("error=\(String(describing: error))")
                return
            }
            
            print("response solito ID = \(String(describing: response))") //Error: 1062
            
            let responseString = NSString(data: data!, encoding: String.Encoding.utf8.rawValue)
            print("responseString ID = \(String(describing: responseString))")
            
            response_id = responseString as! String
        }
        
        task.resume()
        
    } catch {
        print ("❌ JSON Failure")
    }
    
    getJsonFromUrl()
    
}