space-ios/iOSClient/AppDelegate.m

//
//  AppDelegate.m
//  Nextcloud
//
//  Created by Marino Faggiana on 04/09/14.
//  Copyright (c) 2014 Marino Faggiana. All rights reserved.
//
//  Author Marino Faggiana <marino.faggiana@nextcloud.com>
//
//  This program is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
//
//  This program is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with this program.  If not, see <http://www.gnu.org/licenses/>.
//

#import "AppDelegate.h"
#import "CCGraphics.h"
#import "NCBridgeSwift.h"
#import "NCAutoUpload.h"
#import "NCPushNotificationEncryption.h"
#import <QuartzCore/QuartzCore.h>

@import Sentry;

@class NCViewerRichdocument;

@interface AppDelegate() <TOPasscodeViewControllerDelegate>
@end

@implementation AppDelegate

+ (void)initialize
{
    [[NSUserDefaults standardUserDefaults] registerDefaults:@{@"UserAgent": [CCUtility getUserAgent]}];
}

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    BOOL isSimulatorOrTestFlight = [[NCUtility shared] isSimulatorOrTestFlight];
    
    if (isSimulatorOrTestFlight) {
        NCBrandOptions.sharedInstance.disable_crash_service = false;
    }
    if (![CCUtility getDisableCrashservice] && NCBrandOptions.sharedInstance.disable_crash_service == false) {
        [SentrySDK startWithOptions: @{
            @"dsn": @"https://42eaf570ec2646b1a564a4c4bfc8c279@o394108.ingest.sentry.io/5243836",
            @"debug": @(YES),
            @"enableAutoSessionTracking": @(YES)
            /* PRIVACY : https://github.com/getsentry/sentry-cocoa
             By default, we don’t apply the user identification provided to the SDK via the API. Instead, we use
             the installation ID generated with the first use of the application. The ID doesn’t contain any
             private or public data of your users or any public or shared data of their device.
             */
        }];
    }
    
    [CCUtility createDirectoryStandard];
    [CCUtility emptyTemporaryDirectory];
    
    // Networking
    [[NCCommunicationCommon shared] setupWithDelegate:[NCNetworking shared]];
    [[NCCommunicationCommon shared] setupWithUserAgent:[CCUtility getUserAgent]];
    
    NSInteger logLevel = [CCUtility getLogLevel];
    [[NCCommunicationCommon shared] setFileLogWithLevel:logLevel];
    NSString *versionApp = [NSString stringWithFormat:@"%@.%@", [[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleShortVersionString"], [[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleVersion"]];
    NSString *versionNextcloudiOS = [NSString stringWithFormat:[NCBrandOptions sharedInstance].textCopyrightNextcloudiOS, versionApp];
    if (isSimulatorOrTestFlight) {
        [[NCCommunicationCommon shared] writeLog:[NSString stringWithFormat:@"Start session with level %lu %@ (Simulator / TestFlight)", (unsigned long)logLevel, versionNextcloudiOS]];
    } else {
        [[NCCommunicationCommon shared] writeLog:[NSString stringWithFormat:@"Start session with level %lu %@", (unsigned long)logLevel, versionNextcloudiOS]];
    }
    
    //
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(initializeMain:) name:k_notificationCenter_initializeMain object:nil];
    
    // Set account, if no exists clear all
    tableAccount *tableAccount = [[NCManageDatabase sharedInstance] getAccountActive];
    if (tableAccount == nil) {
        // remove all the keys Chain
        [CCUtility deleteAllChainStore];
        // remove all the App group key
        [[NSUserDefaults standardUserDefaults] removePersistentDomainForName:[[NSBundle mainBundle] bundleIdentifier]];
    } else {
        // FIX 3.0.5 lost urlbase
        if (tableAccount.urlBase.length == 0) {
            NSString *user = [tableAccount.user stringByAppendingString:@" "];
            NSString *urlBase = [tableAccount.account stringByReplacingOccurrencesOfString:user withString:@""];
            tableAccount.urlBase = urlBase;
            [[NCManageDatabase sharedInstance] updateAccount:tableAccount];
            
            tableAccount = [[NCManageDatabase sharedInstance] getAccountActive];
        }
        [self settingAccount:tableAccount.account urlBase:tableAccount.urlBase user:tableAccount.user userID:tableAccount.userID password:[CCUtility getPassword:tableAccount.account]];
    }
    
    // UserDefaults
    self.ncUserDefaults = [[NSUserDefaults alloc] initWithSuiteName:[NCBrandOptions sharedInstance].capabilitiesGroups];
        
    // Background Fetch
    [application setMinimumBackgroundFetchInterval:UIApplicationBackgroundFetchIntervalMinimum];

    self.listProgressMetadata = [NSMutableDictionary new];
    self.listFilesVC = [NSMutableDictionary new];
    self.listFavoriteVC = [NSMutableDictionary new];
    self.listOfflineVC = [NSMutableDictionary new];

    // Push Notification
    [application registerForRemoteNotifications];
    
    // Display notification
    [UNUserNotificationCenter currentNotificationCenter].delegate = self;
    UNAuthorizationOptions authOptions = UNAuthorizationOptionAlert | UNAuthorizationOptionSound | UNAuthorizationOptionBadge;
    [[UNUserNotificationCenter currentNotificationCenter] requestAuthorizationWithOptions:authOptions completionHandler:^(BOOL granted, NSError * _Nullable error) { }];
    
    //AV Session
    [[AVAudioSession sharedInstance] setCategory: AVAudioSessionCategoryPlayback error:nil];
    [[UIApplication sharedApplication] beginReceivingRemoteControlEvents];

    // ProgressView Detail
    self.progressViewDetail = [[UIProgressView alloc] initWithProgressViewStyle: UIProgressViewStyleBar];
    
    // Start Timer
    self.timerUpdateApplicationIconBadgeNumber = [NSTimer scheduledTimerWithTimeInterval:k_timerUpdateApplicationIconBadgeNumber target:self selector:@selector(updateApplicationIconBadgeNumber) userInfo:nil repeats:YES];
    [self startTimerErrorNetworking];

    // Store review
    if ([[NCUtility shared] isSimulatorOrTestFlight] == false) {
        NCStoreReview *review = [NCStoreReview new];
        [review incrementAppRuns];
        [review showStoreReview];
    }
    
    // Detect Dark mode
    if (@available(iOS 13.0, *)) {
        if ([CCUtility getDarkModeDetect]) {
            if ([[UITraitCollection currentTraitCollection] userInterfaceStyle] == UIUserInterfaceStyleDark) {
                [CCUtility setDarkMode:YES];
            } else {
                [CCUtility setDarkMode:NO];
            }
        }
    }
        
    if ([NCBrandOptions sharedInstance].disable_intro) {
        [CCUtility setIntro:YES];
        
        if (self.account.length == 0) {
            [self openLoginView:nil selector:k_intro_login openLoginWeb:false];
        }
    } else {
        if ([CCUtility getIntro] == NO) {
            UIViewController *introViewController = [[UIStoryboard storyboardWithName:@"NCIntro" bundle:[NSBundle mainBundle]] instantiateInitialViewController];
            
            UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController: introViewController];
            self.window.rootViewController = navController;
            [self.window makeKeyAndVisible];
        }
    }

    // init home
    [[NSNotificationCenter defaultCenter] postNotificationOnMainThreadName:k_notificationCenter_initializeMain object:nil userInfo:nil];

    // Passcode
    dispatch_async(dispatch_get_main_queue(), ^{
        [self passcodeWithAutomaticallyPromptForBiometricValidation:true];
    });
    
    // Auto upload
    self.networkingAutoUpload = [NCNetworkingAutoUpload new];
    
    return YES;
}

//
// L' applicazione si dimetterà dallo stato di attivo
//
- (void)applicationWillResignActive:(UIApplication *)application
{
    if (self.account.length == 0) return;
    
    // Dismiss FileViewInFolder
    if (self.activeFileViewInFolder != nil ) {
        [self.activeFileViewInFolder dismissViewControllerAnimated:false completion:^{
            self.activeFileViewInFolder = nil;
        }];
    }
    
    [self updateApplicationIconBadgeNumber];
}

//
// L' applicazione entrerà in primo piano (attivo solo dopo il background)
//
- (void)applicationWillEnterForeground:(UIApplication *)application
{
    if (self.account.length == 0) { return; }
    
    [[NSNotificationCenter defaultCenter] postNotificationOnMainThreadName:k_notificationCenter_applicationWillEnterForeground object:nil];
    
    // Request Passcode
    [self passcodeWithAutomaticallyPromptForBiometricValidation:true];
    
    // Initialize Auto upload
    [[NCAutoUpload sharedInstance] initStateAutoUpload];
    
    // Read active directory
    [[NSNotificationCenter defaultCenter] postNotificationOnMainThreadName:k_notificationCenter_reloadDataSourceNetworkForced object:nil];
    
    // Required unsubscribing / subscribing
    [self pushNotification];
    
    // RichDocument
    [[NSNotificationCenter defaultCenter] postNotificationOnMainThreadName:k_notificationCenter_richdocumentGrabFocus object:nil];
    
    // Request Service Server Nextcloud
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 1 * NSEC_PER_SEC), dispatch_get_main_queue(), ^(void) {
        [[NCService shared] startRequestServicesServer];
    });
}

//
// L' applicazione entrerà in primo piano (attivo sempre)
//
- (void)applicationDidBecomeActive:(UIApplication *)application
{
    if (self.account.length == 0) { return; }
        
    // Brand
    #if defined(HC)
    tableAccount *account = [[NCManageDatabase sharedInstance] getAccountActive];
    if (account.hcIsTrial == true || account.hcTrialExpired == true || account.hcNextGroupExpirationGroupExpired == true) {
        
        HCTrial *vc = [[UIStoryboard storyboardWithName:@"HCTrial" bundle:nil] instantiateInitialViewController];
        vc.account = account;
        
        [self.window.rootViewController presentViewController:vc animated:YES completion:nil];
    }
    #endif
    
    [[NCNetworking shared] verifyUploadZombie];
}

//
// L' applicazione è entrata nello sfondo
//
- (void)applicationDidEnterBackground:(UIApplication *)application
{
    if (self.account.length == 0) { return; }

    [[NSNotificationCenter defaultCenter] postNotificationOnMainThreadName:k_notificationCenter_applicationDidEnterBackground object:nil];
    
    [self passcodeWithAutomaticallyPromptForBiometricValidation:false];
}

//
// L'applicazione terminerà
//
- (void)applicationWillTerminate:(UIApplication *)application
{
    [[NCCommunicationCommon shared] writeLog:@"bye bye"];
}

// NotificationCenter
- (void)initializeMain:(NSNotification *)notification
{
    if (self.account.length == 0) return;
    
    // Clear error certificate
    [CCUtility setCertificateError:self.account error:NO];
    
    // Setting Theming
    [[NCBrandColor sharedInstance] settingThemingColor];
    
    // If AVPlayer in play -> Stop
    if (self.player != nil && self.player.rate != 0) {
        [self.player pause];
    }
    
    // close detail
    [[NSNotificationCenter defaultCenter] postNotificationOnMainThreadName:k_notificationCenter_menuDetailClose object:nil];
    
    // Not Photos Video in library ? then align and Init Auto Upload
    NSArray *recordsPhotoLibrary = [[NCManageDatabase sharedInstance] getPhotoLibraryWithPredicate:[NSPredicate predicateWithFormat:@"account == %@", self.account]];
    if ([recordsPhotoLibrary count] == 0) {
        [[NCAutoUpload sharedInstance] alignPhotoLibrary];
    }
    
    // Start Auto Upload
    [[NCAutoUpload sharedInstance] initStateAutoUpload];
    
    // Start services
    [[NCService shared] startRequestServicesServer];
    
    // Registeration push notification
    [self pushNotification];
    
    // Registeration domain File Provider
    //FileProviderDomain *fileProviderDomain = [FileProviderDomain new];
    //[fileProviderDomain removeAllDomains];
    //[fileProviderDomain registerDomains];
    
    [[NCCommunicationCommon shared] writeLog:@"initialize Main"];
}

#pragma --------------------------------------------------------------------------------------------
#pragma mark ===== Login / checkErrorNetworking =====
#pragma --------------------------------------------------------------------------------------------

- (void)checkErrorNetworking
{
    // test
    if (self.account.length == 0) return;
    
    // check unauthorized server (401)
    if ([CCUtility getPassword:self.account].length == 0) {
        
        [self openLoginView:self.window.rootViewController selector:k_intro_login openLoginWeb:true];
    }
    
    // check certificate untrusted (-1202)
    if ([CCUtility getCertificateError:self.account]) {
        
        UIAlertController *alertController = [UIAlertController alertControllerWithTitle:NSLocalizedString(@"_ssl_certificate_untrusted_", nil) message:NSLocalizedString(@"_connect_server_anyway_", nil)  preferredStyle:UIAlertControllerStyleAlert];
        [alertController addAction: [UIAlertAction actionWithTitle:NSLocalizedString(@"_yes_", nil) style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) {
            [[NCNetworking shared] wrtiteCertificateWithDirectoryCertificate:[CCUtility getDirectoryCerificates]];
            [self startTimerErrorNetworking];
        }]];
                       
        [alertController addAction: [UIAlertAction actionWithTitle:NSLocalizedString(@"_no_", nil) style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) {
            [self startTimerErrorNetworking];
        }]];
        [self.window.rootViewController presentViewController:alertController animated:YES completion:^{
            // Stop timer error network
            [self.timerErrorNetworking invalidate];
        }];
    }
}

- (void)openLoginView:(UIViewController *)viewController selector:(NSInteger)selector openLoginWeb:(BOOL)openLoginWeb
{
    // use appConfig [MDM]
    if ([NCBrandOptions sharedInstance].use_configuration) {
        
        if (!(_appConfigView.isViewLoaded && _appConfigView.view.window)) {
        
            self.appConfigView = [[UIStoryboard storyboardWithName:@"CCLogin" bundle:nil] instantiateViewControllerWithIdentifier:@"NCAppConfigView"];
            
            [self showLoginViewController:self.appConfigView forContext:viewController];
        }
    
        return;
    }
    
    // only for personalized LoginWeb [customer]
    if ([NCBrandOptions sharedInstance].use_login_web_personalized) {
        
        if (!(_activeLoginWeb.isViewLoaded && _activeLoginWeb.view.window)) {
            
            self.activeLoginWeb = [[UIStoryboard storyboardWithName:@"CCLogin" bundle:nil] instantiateViewControllerWithIdentifier:@"NCLoginWeb"];
            self.activeLoginWeb.urlBase = [[NCBrandOptions sharedInstance] loginBaseUrl];

            [self showLoginViewController:self.activeLoginWeb forContext:viewController];
        }
        
        return;
    }
    
    // normal login
    if (selector == k_intro_signup) {
        
        if (!(_activeLoginWeb.isViewLoaded && _activeLoginWeb.view.window)) {
            
            self.activeLoginWeb = [[UIStoryboard storyboardWithName:@"CCLogin" bundle:nil] instantiateViewControllerWithIdentifier:@"NCLoginWeb"];
            
            if (selector == k_intro_signup) {
                self.activeLoginWeb.urlBase = [[NCBrandOptions sharedInstance] linkloginPreferredProviders];
            } else {
                self.activeLoginWeb.urlBase = self.urlBase;
            }
            
           [self showLoginViewController:self.activeLoginWeb forContext:viewController];
        }
        
    } else if ([NCBrandOptions sharedInstance].disable_intro && [NCBrandOptions sharedInstance].disable_request_login_url) {
        
        self.activeLoginWeb = [[UIStoryboard storyboardWithName:@"CCLogin" bundle:nil] instantiateViewControllerWithIdentifier:@"NCLoginWeb"];
        self.activeLoginWeb.urlBase = [[NCBrandOptions sharedInstance] loginBaseUrl];
        
        [self showLoginViewController:self.activeLoginWeb forContext:viewController];
        
    } else if (openLoginWeb) {
        
        if (!(_activeLoginWeb.isViewLoaded && _activeLoginWeb.view.window)) {
            self.activeLoginWeb = [[UIStoryboard storyboardWithName:@"CCLogin" bundle:nil] instantiateViewControllerWithIdentifier:@"NCLoginWeb"];
            self.activeLoginWeb.urlBase = self.urlBase;

            [self showLoginViewController:self.activeLoginWeb forContext:viewController];
        }
        
    } else {
        
        if (!(_activeLogin.isViewLoaded && _activeLogin.view.window)) {
            
            _activeLogin = [[UIStoryboard storyboardWithName:@"CCLogin" bundle:nil] instantiateViewControllerWithIdentifier:@"CCLoginNextcloud"];
            
            [self showLoginViewController:_activeLogin forContext:viewController];
        }
    }
}

-(void)showLoginViewController:(UIViewController *)viewController forContext:(UIViewController *)contextViewController
{
    if (contextViewController == NULL) {
        
        UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:viewController];
        navigationController.navigationBar.barStyle =  UIBarStyleBlack;
        navigationController.navigationBar.tintColor = NCBrandColor.sharedInstance.customerText;
        navigationController.navigationBar.barTintColor = NCBrandColor.sharedInstance.customer;
        [navigationController.navigationBar setTranslucent:false];
        self.window.rootViewController = navigationController;
        
        [self.window makeKeyAndVisible];
        
    } else if ([contextViewController isKindOfClass:[UINavigationController class]]) {
        
        UINavigationController *navigationController = ((UINavigationController *)contextViewController);
        [navigationController pushViewController:viewController animated:true];
        
    } else {
        
        UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:viewController];
        navigationController.modalPresentationStyle = UIModalPresentationFullScreen;
        navigationController.navigationBar.barStyle =  UIBarStyleBlack;
        navigationController.navigationBar.tintColor = NCBrandColor.sharedInstance.customerText;
        navigationController.navigationBar.barTintColor = NCBrandColor.sharedInstance.customer;
        [navigationController.navigationBar setTranslucent:false];
        
        [contextViewController presentViewController:navigationController animated:true completion:nil];
    }
}

- (void)startTimerErrorNetworking
{
    self.timerErrorNetworking = [NSTimer scheduledTimerWithTimeInterval:k_timerErrorNetworking target:self selector:@selector(checkErrorNetworking) userInfo:nil repeats:YES];
}

#pragma --------------------------------------------------------------------------------------------
#pragma mark ===== Account & Communication =====
#pragma --------------------------------------------------------------------------------------------

- (void)settingAccount:(NSString *)account urlBase:(NSString *)urlBase user:(NSString *)user userID:(NSString *)userID password:(NSString *)password
{
    self.account = account;
    self.urlBase = urlBase;
    self.user = user;
    self.userID = userID;
    self.password = password;

    (void)[NCNetworkingNotificationCenter shared];

    [[NCCommunicationCommon shared] setupWithAccount:account user:user userId:userID password:password urlBase:urlBase];
    [self settingSetupCommunication:account];
}

- (void)deleteAccount:(NSString *)account wipe:(BOOL)wipe
{
    // Push Notification
    tableAccount *accountPN = [[NCManageDatabase sharedInstance] getAccountWithPredicate:[NSPredicate predicateWithFormat:@"account == %@", account]];
    [self unsubscribingNextcloudServerPushNotification:accountPN.account urlBase:accountPN.urlBase user:accountPN.user withSubscribing:false];

    [self settingAccount:nil urlBase:nil user:nil userID:nil password:nil];
    
    /* DELETE ALL FILES LOCAL FS */
    NSArray *results = [[NCManageDatabase sharedInstance] getTableLocalFilesWithPredicate:[NSPredicate predicateWithFormat:@"account == %@", account] sorted:@"ocId" ascending:NO];
    for (tableLocalFile *result in results) {
        [CCUtility removeFileAtPath:[CCUtility getDirectoryProviderStorageOcId:result.ocId]];
    }
    // Clear database
    [[NCManageDatabase sharedInstance] clearDatabaseWithAccount:account removeAccount:true];

    [CCUtility clearAllKeysEndToEnd:account];
    [CCUtility clearAllKeysPushNotification:account];
    [CCUtility setCertificateError:account error:false];
    [CCUtility setPassword:account password:nil];
       
    if (wipe) {
        NSArray *listAccount = [[NCManageDatabase sharedInstance] getAccounts];
        if ([listAccount count] > 0) {
            NSString *newAccount = listAccount[0];
            tableAccount *tableAccount = [[NCManageDatabase sharedInstance] setAccountActive:newAccount];
            [self settingAccount:newAccount urlBase:tableAccount.urlBase user:tableAccount.user userID:tableAccount.userID password:[CCUtility getPassword:tableAccount.account]];
            [[NSNotificationCenter defaultCenter] postNotificationOnMainThreadName:k_notificationCenter_initializeMain object:nil userInfo:nil];
        } else {
            [self openLoginView:self.window.rootViewController selector:k_intro_login openLoginWeb:false];
        }
    }
}

- (void)settingSetupCommunication:(NSString *)account
{
    NSInteger serverVersionMajor = [[NCManageDatabase sharedInstance] getCapabilitiesServerIntWithAccount:account elements:NCElementsJSON.shared.capabilitiesVersionMajor];
    if (serverVersionMajor > 0) {
        [[NCCommunicationCommon shared] setupWithNextcloudVersion:serverVersionMajor];
    }
    
    [[NCCommunicationCommon shared] setupWithWebDav:[[NCUtility shared] getWebDAVWithAccount:account]];
    [[NCCommunicationCommon shared] setupWithDav:[[NCUtility shared] getDAV]];
}

#pragma --------------------------------------------------------------------------------------------
#pragma mark ===== Push Notifications =====
#pragma --------------------------------------------------------------------------------------------

- (void)pushNotification
{
    // test
    if (self.account.length == 0 || self.pushKitToken.length == 0) return;
    
    for (tableAccount *result in [[NCManageDatabase sharedInstance] getAllAccount]) {
        
        NSString *token = [CCUtility getPushNotificationToken:result.account];
        
        if (![token isEqualToString:self.pushKitToken]) {
            if (token != nil) {
                // unsubscribing + subscribing
                [self unsubscribingNextcloudServerPushNotification:result.account urlBase:result.urlBase user:result.user withSubscribing:true];
            } else {
                [self subscribingNextcloudServerPushNotification:result.account urlBase:result.urlBase user:result.user];
            }
        }
    }
}

- (void)subscribingNextcloudServerPushNotification:(NSString *)account urlBase:(NSString *)urlBase user:(NSString *)user
{
    // test
    if (self.account.length == 0 || self.pushKitToken.length == 0) return;
    
    [[NCPushNotificationEncryption sharedInstance] generatePushNotificationsKeyPair:account];

    NSString *pushTokenHash = [[NCEndToEndEncryption sharedManager] createSHA512:self.pushKitToken];
    NSData *pushPublicKey = [CCUtility getPushNotificationPublicKey:account];
    NSString *pushDevicePublicKey = [[NSString alloc] initWithData:pushPublicKey encoding:NSUTF8StringEncoding];
    NSString *proxyServerPath = [NCBrandOptions sharedInstance].pushNotificationServerProxy;
    
    [[NCCommunication shared] subscribingPushNotificationWithServerUrl:urlBase account:account user:user password:[CCUtility getPassword:account] pushTokenHash:pushTokenHash devicePublicKey:pushDevicePublicKey proxyServerUrl:proxyServerPath customUserAgent:nil addCustomHeaders:nil completionHandler:^(NSString *account, NSString *deviceIdentifier, NSString *signature, NSString *publicKey, NSInteger errorCode, NSString *errorDescription) {
        if (errorCode == 0) {
            NSString *userAgent = [NSString stringWithFormat:@"%@  (Strict VoIP)", [CCUtility getUserAgent]];
            [[NCCommunication shared] subscribingPushProxyWithProxyServerUrl:proxyServerPath pushToken:self.pushKitToken deviceIdentifier:deviceIdentifier signature:signature publicKey:publicKey userAgent:userAgent completionHandler:^(NSInteger errorCode, NSString *errorDescription) {
                if (errorCode == 0) {
                    
                    [[NCCommunicationCommon shared] writeLog:@"Subscribed to Push Notification server & proxy successfully"];

                    [CCUtility setPushNotificationToken:account token:self.pushKitToken];
                    [CCUtility setPushNotificationDeviceIdentifier:account deviceIdentifier:deviceIdentifier];
                    [CCUtility setPushNotificationDeviceIdentifierSignature:account deviceIdentifierSignature:signature];
                    [CCUtility setPushNotificationSubscribingPublicKey:account publicKey:publicKey];
                }
            }];
        }
    }];
}

- (void)unsubscribingNextcloudServerPushNotification:(NSString *)account urlBase:(NSString *)urlBase user:(NSString *)user withSubscribing:(BOOL)subscribing
{
    if (self.account.length == 0) return;
    
    NSString *deviceIdentifier = [CCUtility getPushNotificationDeviceIdentifier:account];
    NSString *signature = [CCUtility getPushNotificationDeviceIdentifierSignature:account];
    NSString *publicKey = [CCUtility getPushNotificationSubscribingPublicKey:account];

    [[NCCommunication shared] unsubscribingPushNotificationWithServerUrl:urlBase account:account user:user password:[CCUtility getPassword:account] customUserAgent:nil addCustomHeaders:nil completionHandler:^(NSString *account, NSInteger errorCode, NSString *errorDescription) {
        if (errorCode == 0) {
            NSString *userAgent = [NSString stringWithFormat:@"%@  (Strict VoIP)", [CCUtility getUserAgent]];
            NSString *proxyServerPath = [NCBrandOptions sharedInstance].pushNotificationServerProxy;
            [[NCCommunication shared] unsubscribingPushProxyWithProxyServerUrl:proxyServerPath deviceIdentifier:deviceIdentifier signature:signature publicKey:publicKey userAgent:userAgent completionHandler:^(NSInteger errorCode, NSString *errorDescription) {
                if (errorCode == 0) {
                
                    [[NCCommunicationCommon shared] writeLog:@"Unsubscribed to Push Notification server & proxy successfully."];
                    
                    [CCUtility setPushNotificationPublicKey:account data:nil];
                    [CCUtility setPushNotificationSubscribingPublicKey:account publicKey:nil];
                    [CCUtility setPushNotificationPrivateKey:account data:nil];
                    [CCUtility setPushNotificationToken:account token:nil];
                    [CCUtility setPushNotificationDeviceIdentifier:account deviceIdentifier:nil];
                    [CCUtility setPushNotificationDeviceIdentifierSignature:account deviceIdentifierSignature:nil];
                    
                    if (self.pushKitToken != nil && subscribing) {
                        [self subscribingNextcloudServerPushNotification:account urlBase:urlBase user:user];
                    }
                }
            }];
        }
    }];
}

-(void)userNotificationCenter:(UNUserNotificationCenter *)center willPresentNotification:(UNNotification *)notification withCompletionHandler:(void (^)(UNNotificationPresentationOptions options))completionHandler
{
    //Called when a notification is delivered to a foreground app.
    completionHandler(UNNotificationPresentationOptionAlert);
}

-(void)userNotificationCenter:(UNUserNotificationCenter *)center didReceiveNotificationResponse:(nonnull UNNotificationResponse *)response withCompletionHandler:(nonnull void (^)(void))completionHandler
{
    completionHandler();
}

- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken
{
    self.pushKitToken = [self stringWithDeviceToken:deviceToken];

    [self pushNotification];
}

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler
{
    NSString *message = [userInfo objectForKey:@"subject"];
    if (message) {
        NSArray *results = [[NCManageDatabase sharedInstance] getAllAccount];
        for (tableAccount *result in results) {
            if ([CCUtility getPushNotificationPrivateKey:result.account]) {
                NSData *decryptionKey = [CCUtility getPushNotificationPrivateKey:result.account];
                NSString *decryptedMessage = [[NCPushNotificationEncryption sharedInstance] decryptPushNotification:message withDevicePrivateKey:decryptionKey];
                if (decryptedMessage) {
                    NSData *data = [decryptedMessage dataUsingEncoding:NSUTF8StringEncoding];
                    NSDictionary *json = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];
                    NSInteger nid = [[json objectForKey:@"nid"] integerValue];
                    BOOL delete = [[json objectForKey:@"delete"] boolValue];
                    BOOL deleteAll = [[json objectForKey:@"delete-all"] boolValue];
                    if (delete) {
                        [self removeNotificationWithNotificationId:nid usingDecryptionKey:decryptionKey];
                    } else if (deleteAll) {
                        [self cleanAllNotifications];
                    }
                }
            }
        }
    }
    completionHandler(UIBackgroundFetchResultNoData);
}

- (void)cleanAllNotifications
{
    [[UNUserNotificationCenter currentNotificationCenter] removeAllDeliveredNotifications];
}

- (void)removeNotificationWithNotificationId:(NSInteger)notificationId usingDecryptionKey:(NSData *)key
{
    // Check in pending notifications
    [[UNUserNotificationCenter currentNotificationCenter] getPendingNotificationRequestsWithCompletionHandler:^(NSArray<UNNotificationRequest *> * _Nonnull requests) {
        for (UNNotificationRequest *notificationRequest in requests) {
            NSString *message = [notificationRequest.content.userInfo objectForKey:@"subject"];
            NSString *decryptedMessage = [[NCPushNotificationEncryption sharedInstance] decryptPushNotification:message withDevicePrivateKey:key];
            if (decryptedMessage) {
                NSData *data = [decryptedMessage dataUsingEncoding:NSUTF8StringEncoding];
                NSDictionary *json = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];
                NSInteger nid = [[json objectForKey:@"nid"] integerValue];
                if (nid == notificationId) {
                    [[UNUserNotificationCenter currentNotificationCenter] removePendingNotificationRequestsWithIdentifiers:@[notificationRequest.identifier]];
                }
            }
        }
    }];
    // Check in delivered notifications
    [[UNUserNotificationCenter currentNotificationCenter] getDeliveredNotificationsWithCompletionHandler:^(NSArray<UNNotification *> * _Nonnull notifications) {
        for (UNNotification *notification in notifications) {
            NSString *message = [notification.request.content.userInfo objectForKey:@"subject"];
            NSString *decryptedMessage = [[NCPushNotificationEncryption sharedInstance] decryptPushNotification:message withDevicePrivateKey:key];
            if (decryptedMessage) {
                NSData *data = [decryptedMessage dataUsingEncoding:NSUTF8StringEncoding];
                NSDictionary *json = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];
                NSInteger nid = [[json objectForKey:@"nid"] integerValue];
                if (nid == notificationId) {
                    [[UNUserNotificationCenter currentNotificationCenter] removeDeliveredNotificationsWithIdentifiers:@[notification.request.identifier]];
                }
            }
        }
    }];
}

- (NSString *)stringWithDeviceToken:(NSData *)deviceToken
{
    const char *data = [deviceToken bytes];
    NSMutableString *token = [NSMutableString string];
    
    for (NSUInteger i = 0; i < [deviceToken length]; i++) {
        [token appendFormat:@"%02.2hhX", data[i]];
    }
    
    return [token copy];
}

#pragma --------------------------------------------------------------------------------------------
#pragma mark ===== ApplicationIconBadgeNumber =====
#pragma --------------------------------------------------------------------------------------------

- (void)updateApplicationIconBadgeNumber
{
    if (self.account.length == 0) return;
            
    NSInteger counterDownload = [[NCOperationQueue shared] downloadCount];
    NSInteger counterUpload = [[NCManageDatabase sharedInstance] getMetadatasWithPredicate:[NSPredicate predicateWithFormat:@"status == %d OR status == %d OR status == %d", k_metadataStatusWaitUpload, k_metadataStatusInUpload, k_metadataStatusUploading]].count;
    NSInteger total = counterDownload + counterUpload;
    
    [UIApplication sharedApplication].applicationIconBadgeNumber = total;
    
    UITabBarController *tabBarController = (UITabBarController *)self.window.rootViewController;
    if ([tabBarController isKindOfClass:[UITabBarController class]]) {
        UITabBarItem *tabBarItem = [tabBarController.tabBar.items objectAtIndex:0];
        if (total > 0) {
            [tabBarItem setBadgeValue:[NSString stringWithFormat:@"%li", (unsigned long)total]];
        } else {
            [tabBarItem setBadgeValue:nil];
        }
    }
}

#pragma --------------------------------------------------------------------------------------------
#pragma mark ===== Fetch =====
#pragma --------------------------------------------------------------------------------------------

- (void)application:(UIApplication *)application performFetchWithCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler
{
    if (self.account.length == 0) {
        completionHandler(UIBackgroundFetchResultNoData);
        return;
    }
    
    [[NCCommunicationCommon shared] writeLog:@"Start perform Fetch With Completion Handler"];
    
    // Verify new photo
    [[NCAutoUpload sharedInstance] initStateAutoUpload];
    
    // after 20 sec
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 20 * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
        [[NCCommunicationCommon shared] writeLog:@"End 20 sec. perform Fetch With Completion Handler"];
        completionHandler(UIBackgroundFetchResultNoData);
    });
}

#pragma --------------------------------------------------------------------------------------------
#pragma mark ===== Operation Networking & Session =====
#pragma --------------------------------------------------------------------------------------------

//
// Method called by the system when all the background task has end
//
- (void)application:(UIApplication *)application handleEventsForBackgroundURLSession:(NSString *)identifier completionHandler:(void (^)(void))completionHandler
{
    [[NCCommunicationCommon shared] writeLog:[NSString stringWithFormat:@"Start handle Events For Background URLSession: %@", identifier]];
    
    [self updateApplicationIconBadgeNumber];
    
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 20 * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
        self.backgroundSessionCompletionHandler = completionHandler;
        void (^completionHandler)() = self.backgroundSessionCompletionHandler;
        self.backgroundSessionCompletionHandler = nil;
        completionHandler();
    });
}

#pragma --------------------------------------------------------------------------------------------
#pragma mark ===== OpenURL  =====
#pragma --------------------------------------------------------------------------------------------

// Method called from iOS system to send a file from other app.
- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url options:(NSDictionary<NSString *,id> *)options
{
    if (self.account.length == 0) return YES;
    
    NSString *scheme = url.scheme;
    NSString *fileName;
    NSString *serverUrl;

    if ([scheme isEqualToString:@"nextcloud"]) {
                
        NSString *action = url.host;
        if ([action isEqualToString:@"open-file"]) {
            NSURLComponents *urlComponents = [NSURLComponents componentsWithURL:url resolvingAgainstBaseURL:NO];
            NSArray *queryItems = urlComponents.queryItems;
            NSString *user = [CCUtility valueForKey:@"user" fromQueryItems:queryItems];
            NSString *path = [CCUtility valueForKey:@"path" fromQueryItems:queryItems];
            NSString *link = [CCUtility valueForKey:@"link" fromQueryItems:queryItems];
            tableAccount *matchedAccount = nil;

            // verify parameter
            if (user.length == 0 || path.length == 0 || [[NSURL URLWithString:link] host].length == 0) {
                
                UIAlertController *alertController = [UIAlertController alertControllerWithTitle:NSLocalizedString(@"_error_", nil) message:NSLocalizedString(@"_error_parameter_schema_", nil) preferredStyle:UIAlertControllerStyleAlert];
                UIAlertAction *okAction = [UIAlertAction actionWithTitle:NSLocalizedString(@"_ok_", nil) style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) {}];
                
                [alertController addAction:okAction];
                [self.window.rootViewController presentViewController:alertController animated:YES completion:nil];
                
            } else {
            
                tableAccount *account = [[NCManageDatabase sharedInstance] getAccountActive];
                if (account) {
                    NSURL *accountURL = [NSURL URLWithString:account.urlBase];
                    NSString *accountUser = account.user;
                    if ([link containsString:accountURL.host] && [user isEqualToString:accountUser]) {
                        matchedAccount = account;
                    } else {
                        NSArray *accounts = [[NCManageDatabase sharedInstance] getAllAccount];
                        for (tableAccount *account in accounts) {
                            NSURL *accountURL = [NSURL URLWithString:account.urlBase];
                            NSString *accountUser = account.user;
                            if ([link containsString:accountURL.host] && [user isEqualToString:accountUser]) {
                                matchedAccount = [[NCManageDatabase sharedInstance] setAccountActive:account.account];
                                [self settingAccount:matchedAccount.account urlBase:matchedAccount.urlBase user:matchedAccount.user userID:matchedAccount.userID password:[CCUtility getPassword:matchedAccount.account]];
                                [[NSNotificationCenter defaultCenter] postNotificationOnMainThreadName:k_notificationCenter_initializeMain object:nil userInfo:nil];
                            }
                        }
                    }
                    
                    if (matchedAccount) {
                        
                        NSString *webDAV = [[NCUtility shared] getWebDAVWithAccount:self.account];

                        if ([path containsString:@"/"]) {

                            fileName = [path lastPathComponent];
                            serverUrl = [NSString stringWithFormat:@"%@/%@/%@", matchedAccount.urlBase, webDAV, [path stringByDeletingLastPathComponent]];
                            
                        } else {
                            
                            fileName = path;
                            serverUrl = [NSString stringWithFormat:@"%@/%@", matchedAccount.urlBase, webDAV];
                        }
                        
                        [[NCCollectionCommon shared] openFileViewInFolderWithServerUrl:serverUrl fileName:fileName];
                   
                    } else {
                        
                        NSString *domain = [[NSURL URLWithString:link] host];
                        NSString *fileName = [path lastPathComponent];
                        NSString *message = [NSString stringWithFormat:NSLocalizedString(@"_account_not_available_", nil), user, domain, fileName];
                        
                        UIAlertController *alertController = [UIAlertController alertControllerWithTitle:NSLocalizedString(@"_info_", nil) message:message preferredStyle:UIAlertControllerStyleAlert];
                        UIAlertAction *okAction = [UIAlertAction actionWithTitle:NSLocalizedString(@"_ok_", nil) style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) {}];
                        
                        [alertController addAction:okAction];
                        [self.window.rootViewController presentViewController:alertController animated:YES completion:nil];
                    }
                }
            }
        }
        return YES;
    }
    
    NSError *error;
    NSLog(@"[LOG] the path is: %@", url.path);
        
    NSArray *splitedUrl = [url.path componentsSeparatedByString:@"/"];
    self.fileNameUpload = [NSString stringWithFormat:@"%@",[splitedUrl objectAtIndex:([splitedUrl count]-1)]];
    
    if (self.account) {
        
        [[NSFileManager defaultManager]removeItemAtPath:[NSTemporaryDirectory() stringByAppendingString:self.fileNameUpload] error:nil];
        [[NSFileManager defaultManager]moveItemAtPath:url.path toPath:[NSTemporaryDirectory() stringByAppendingString:self.fileNameUpload] error:&error];
        
        if (error == nil) {
            dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 1 * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
                UIViewController *uploadNavigationViewController = [[UIStoryboard storyboardWithName:@"CCUploadFromOtherUpp" bundle:nil] instantiateViewControllerWithIdentifier:@"CCUploadNavigationViewController"];
                [self.window.rootViewController presentViewController:uploadNavigationViewController animated:YES completion:nil];
            });
        }
    }
    
    return YES;
}

#pragma --------------------------------------------------------------------------------------------
#pragma mark ===== Passcode + Delegate =====
#pragma --------------------------------------------------------------------------------------------

- (void)passcodeWithAutomaticallyPromptForBiometricValidation:(BOOL)automaticallyPromptForBiometricValidation
{
    LAContext *laContext = [LAContext new];
    NSError *error;
    BOOL isBiometryAvailable = false;
    
    if ([[CCUtility getPasscode] length] == 0 || [self.account length] == 0 || [CCUtility getNotPasscodeAtStart]) return;
    
    if (self.passcodeViewController == nil) {
           
        self.passcodeViewController = [[TOPasscodeViewController alloc] initWithStyle:TOPasscodeViewStyleTranslucentLight passcodeType:TOPasscodeTypeSixDigits];
        if (@available(iOS 13.0, *)) {
            if ([[UITraitCollection currentTraitCollection] userInterfaceStyle] == UIUserInterfaceStyleDark) {
                self.passcodeViewController.style = TOPasscodeViewStyleTranslucentDark;
            }
        }

        self.passcodeViewController.delegate = self;
        self.passcodeViewController.keypadButtonShowLettering = false;
        
        if (CCUtility.getEnableTouchFaceID && [laContext canEvaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics error:&error]) {
            if (error == NULL) {
                if (laContext.biometryType == LABiometryTypeFaceID) {
                    self.passcodeViewController.biometryType = TOPasscodeBiometryTypeFaceID;
                    self.passcodeViewController.allowBiometricValidation = true;
                    isBiometryAvailable = true;
                } else if (laContext.biometryType == LABiometryTypeTouchID) {
                    self.passcodeViewController.biometryType = TOPasscodeBiometryTypeTouchID;
                    self.passcodeViewController.allowBiometricValidation = true;
                    isBiometryAvailable = true;
                } else {
                    isBiometryAvailable = false;
                    NSLog(@"No Biometric support");
                }
            }
        }
    
        [self.window.rootViewController presentViewController:self.passcodeViewController animated:YES completion:^{
            [self enableTouchFaceID:automaticallyPromptForBiometricValidation];
        }];
        
    } else {
    
        dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 0.5 * NSEC_PER_SEC), dispatch_get_main_queue(), ^(void) {
            [self enableTouchFaceID:automaticallyPromptForBiometricValidation];
        });
    }
}

- (void)didInputCorrectPasscodeInPasscodeViewController:(TOPasscodeViewController *)passcodeViewController
{
    [passcodeViewController dismissViewControllerAnimated:YES completion:^{
        self.passcodeViewController = nil;
    }];
}

- (BOOL)passcodeViewController:(TOPasscodeViewController *)passcodeViewController isCorrectCode:(NSString *)code
{
    return [code isEqualToString:[CCUtility getPasscode]];
}

- (void)didPerformBiometricValidationRequestInPasscodeViewController:(TOPasscodeViewController *)passcodeViewController
{
    [[LAContext new] evaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics localizedReason:[[NCBrandOptions sharedInstance] brand] reply:^(BOOL success, NSError * _Nullable error) {
        if (success) {
            dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 0.5 * NSEC_PER_SEC), dispatch_get_main_queue(), ^(void) {
                [passcodeViewController dismissViewControllerAnimated:YES completion:^{
                    self.passcodeViewController = nil;
                }];
            });
        }
    }];
}

- (void)enableTouchFaceID:(BOOL)automaticallyPromptForBiometricValidation
{
    if (CCUtility.getEnableTouchFaceID && automaticallyPromptForBiometricValidation && self.passcodeViewController.view.window) {
        [[LAContext new] evaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics localizedReason:[[NCBrandOptions sharedInstance] brand] reply:^(BOOL success, NSError * _Nullable error) {
            if (success) {
                dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 0.5 * NSEC_PER_SEC), dispatch_get_main_queue(), ^(void) {
                    [self.passcodeViewController dismissViewControllerAnimated:YES completion:^{
                        self.passcodeViewController = nil;
                    }];
                });
            }
        }];
    }
}

@end