presentingUserInfo.swift

import UIKit
import FirebaseAuth
import Kingfisher

class NextVC: UIViewController {
  
  @IBOutlet var profileImageView: UIImageView!
  @IBOutlet var nameLabel: UILabel!
  
  
  @IBAction func onLogoutButton(_ sender: UIButton) {
    
    do{
      try Auth.auth().signOut()
      self.dismiss(animated: true, completion: nil)
    }catch let err as NSError {
      print(err)
    }
    
  }
  
  override func viewDidLoad() {
    super.viewDidLoad()
    
    presentUserInfo()
    
  }
  
  func presentUserInfo(){
    
    guard let user = Auth.auth().currentUser else {
      print("user not logged in")
      return
    }
    
//    print(user.isAnonymous)
    
    /*
     displayName
     photoURL
     email
     isAnonymous
     */
    
    profileImageView.kf.setImage(with: user.photoURL, placeholder: nil, options: nil) { result, error in
      
    }
    
    if(user.isAnonymous){
      nameLabel.text = "Anonymous"
    }else{
      nameLabel.text = user.displayName
    }
    
    
  }
  
  @IBAction func touchedLogoutButton(_ sender: UIButton) {
    do {
      try Auth.auth().signOut()
      dismiss(animated: true, completion: nil)
    } catch let signOutError as NSError {
      print("Error signing out: %@", signOutError)
    }
  }
  
}