Quickblox Webrtc Video Calling Swift - Documentation understanding - ios

Question

I am trying to integrate the Quickblox Webrtc Video Calling feature into a iOS Swift App. However, i'm having a lot of trouble with their SDK & api documentation, and it seems they don't have a tech team to help people with questions about their platforms, so maybe we can all help each other, so here are a few questions that I've noticed a lot of people have been asking on both StackOverFlow and Github regarding their webrtc SDK. Please restrict answers to the Swift language. The docs link is
http://quickblox.com/developers/SimpleSample-videochat-ios
My code so far:
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
// Override point for customization after application launch.
//Firebase config
FIRApp.configure()
//Quickblox config
QBSettings.setApplicationID(xxxxx)
QBSettings.setAuthKey("xxxxxxxxxxx")
QBSettings.setAuthSecret("xxxxxxxx-xxxx")
QBSettings.setAccountKey("xxxxxxxxxxxxxxxxxxxx")
return true
}
Thats my appdelegate.swift now for the part that giving me problems the actual videochatviewcontroller. The documentation is very vague at the start all is says is:
// Initialize QuickbloxWebRTC and configure signaling
// You should call this method before any interact with
QuickbloxWebRTC QBRTCClient.initializeRTC() // Call this method when
you finish your work with QuickbloxWebRTC
QBRTCClient.deinitializeRTC()
I do not know if I am to call this in my appdelegate.swift or if I should call this in VideoChatViewController's viewDidLoad method or should I create a new method altogether?
Secondly,the docs say to CALL USERS use this method, but its not a method, just random variables, also it doesn't tell tell whether it goes to the viewDidLoad or to a newly created method :
QBRTCClient.instance().addDelegate(self) // self class must conform to QBRTCClientDelegate protocol
// 2123, 2123, 3122 - opponent's
let opponentsIDs = [3245, 2123, 3122]
let newSession = QBRTCClient.instance().createNewSessionWithOpponents(opponentsIDs, withConferenceType: QBRTCConferenceType.Video)
// userInfo - the custom user information dictionary for the call. May be nil.
let userInfo :[String:String] = ["key":"value"]
newSession.startCall(userInfo)
Next, they are vague regarding the method to receive a new session, below they refer to self.session which they never explain where this variable is from or what it consist of
func didReceiveNewSession(session: QBRTCSession!, userInfo: [NSObject : AnyObject]!) {
if self.session != nil {
// we already have a video/audio call session, so we reject another one
// userInfo - the custom user information dictionary for the call from caller. May be nil.
let userInfo :[String:String] = ["key":"value"]
session.rejectCall(userInfo)
}
else {
self.session = session
}
}
Does quickblox require authenticated Quickblox users to use their webrtc or can I Authenticate users with Firebase or parse?
Where do I use QBRTCConfig in the appdelegate or the viewDidLoad? I have tried both and have seen it used in both methods.