#pragma mark - ChatAppDelegate
- (void)setupStream {
    self.xmppStream = [XMPPStream new];
    //AES l8e2f5zJt97b8A265q6E0y2kp87EUk
    [self.xmppStream setHostPort:5222];
    [self.xmppStream addDelegate:self delegateQueue:dispatch_get_main_queue()];
}

- (void)goOnline {
    XMPPPresence *presence = [XMPPPresence presence];
    NSString *domain = [self.xmppStream.myJID domain];
    if ([domain isEqualToString:@"gmail.com"] || [domain isEqualToString:@"gtalk.com"] || [domain isEqualToString:@"talk.google.com"]) {
        NSXMLElement *priority = [NSXMLElement elementWithName:@"priority" stringValue:@"24"];
        [presence addChild:priority];
    }

    [self.xmppStream sendElement:presence];
}

- (void)goOffline {
    XMPPPresence *presence = [XMPPPresence presenceWithType:@"unavailable"];
    [self.xmppStream sendElement:presence];
}

- (BOOL)connectChat {
    [self setupStream];
    if (![self.xmppStream isDisconnected]) return YES;

    ZTUser *user = [ZTLoginHelper retrieveCurrentUser];

    NSString *userID = [NSString stringWithFormat:@"%@@ns335861.ip-37-187-161.eu", [user userXMPP] ]; usr_25@ns335861.ip-37-187-161.eu
    NSString *pass = [user passXMPP]; //passXMPP

    if (!userID || !pass) return NO;


    [self.xmppStream setMyJID:[XMPPJID jidWithString:userID]];
    self.chatPassword = pass;

    NSError *error = nil;
    if (![self.xmppStream connectWithTimeout:20 error:&error]) {
        NSLog(@"Impossible to connect %@", error.localizedDescription);
        return NO;
    }

    NSLog(@"connected");

    return YES;
}

- (void)disconnectChat {
    [self goOffline];
    [self.xmppStream disconnect];
}

- (BOOL)chatIsOpen {
    return self.chatIsOpen;
}

- (void)xmppStream:(XMPPStream *)sender willSecureWithSettings:(NSMutableDictionary *)settings {
    [settings setObject:[NSNumber numberWithBool:YES] forKey:(NSString *)kCFStreamSSLAllowsAnyRoot];
    NSString *expectedCertName = [self.xmppStream.myJID domain];
    if (expectedCertName) {
        [settings setObject:expectedCertName forKey:(NSString *)kCFStreamSSLPeerName];
    }}

#pragma mark - XMPP Delegates
#pragma mark - Successfully
- (void)xmppStreamDidConnect:(XMPPStream *)sender {
    // connection to the server successful
    self.chatIsOpen = YES;
    NSError *error;

    if (![[self xmppStream] authenticateWithPassword:self.chatPassword error:&error]) {
        NSLog(@"Error authenticating: %@", error);
    }
}

- (void)xmppStreamDidAuthenticate:(XMPPStream *)sender {
    // authentication successful
    [self goOnline];
}

- (void)xmppStream:(XMPPStream *)sender didReceiveMessage:(XMPPMessage *)message {
    // message receive

}

- (void)xmppStream:(XMPPStream *)sender didReceivePresence:(XMPPPresence *)presence {
    // chat went offline/online

}

#pragma mark - Failure

- (void)xmppStream:(XMPPStream *)sender didNotAuthenticate:(DDXMLElement *)error {
    NSLog(@"%@", error);

}

- (void)xmppStreamDidDisconnect:(XMPPStream *)sender withError:(NSError *)error {

}