Untitled

 @IBAction func registerUser(_ sender: Any) {
        
        
        if (firstNameField.text?.isEmpty)! || (lastNameField.text?.isEmpty)! || (emailField.text?.isEmpty)! || (passwordField.text?.isEmpty)! || (confirmPasswordField.text?.isEmpty)!{

            let alert = UIAlertController(title: "Incomplete form", message: "The form is not complete", preferredStyle: .alert)
        
        
            alert.addAction(UIAlertAction(title: "Go back", style: .cancel, handler: nil))
            present(alert, animated: true)

        }
        if ((confirmPasswordField.text?.elementsEqual(passwordField.text!)) != true) {
            let alert = UIAlertController(title: "Unmatched passwords", message: "The passwords do not match", preferredStyle: .alert)
        
        
            alert.addAction(UIAlertAction(title: "Go back", style: .cancel, handler: nil))
            present(alert, animated: true)
            
        }
        

        
        let url = URL(string: "https://weaweg.mywire.org:8080/api/users/register")
        var request = URLRequest(url: url!)
        request.httpMethod = "PUT"
        //        request.httpMethod = "POST"

        request.addValue("application/json", forHTTPHeaderField: "content-type")
        request.addValue("application/json", forHTTPHeaderField: "Accept")
        
        let postUser =
            [
                "name" : firstNameField.text! + lastNameField.text!,
                "email" : emailField.text!,
                "password" : passwordField.text!
        ] as [String: String]
        
        do {
            request.httpBody = try JSONSerialization.data(withJSONObject: postUser, options: .prettyPrinted)
            
        } catch let error {
            print(error.localizedDescription)
            return
        }
        
        let task = URLSession.shared.dataTask(with: request) { (data: Data?, response: URLResponse?, error: Error?) in
            

            if error != nil {
                print("error=\(String(describing: error))")
                return
                
            }
            
            
            
            do {
                        let json = try JSONSerialization.jsonObject(with: data!, options: .mutableContainers) as? NSDictionary
                        
                        if let parseJSON = json {
                            
                            
                            let userId = parseJSON["userId"] as? String
                            print("User id: \(String(describing: userId!))")
                            
                            if (userId?.isEmpty)!
                            {
                                self.displayMessage(userMessage: "Could not successfully perform this request. Please try again later")
                                return
                            } else {
                                self.displayMessage(userMessage: "Successfully Registered a New Account. Please proceed to Sign in")
                            }
                            
                        } else {
                            self.displayMessage(userMessage: "Could not successfully perform this request. Please try again later")
                        }
                    } catch {
                        
                        self.displayMessage(userMessage: "Could not successfully perform this request. Please try again later")
                        print(error)
                    }
                    
            
            
            
            
            
        }
        task.resume()

        
        ListsContainer.userBank.append(User.init(name: ((firstNameField.text)! + (lastNameField.text)!), password: passwordField.text, email: emailField.text))
        
        if confirmPasswordField.text != passwordField.text {
            
        }
    }
    
    func removeActivityIndicator (activityIndicator: UIActivityIndicatorView) {
        DispatchQueue.main.async {
            activityIndicator.stopAnimating()
            activityIndicator.removeFromSuperview()
        }
    }


func displayMessage(userMessage:String) -> Void {
    DispatchQueue.main.async
        {
            let alertController = UIAlertController(title: "Alert", message: userMessage, preferredStyle: .alert)
            
            let OKAction = UIAlertAction(title: "OK", style: .default) { (action:UIAlertAction!) in
                print("Ok button tapped")
                DispatchQueue.main.async
                    {
                        self.dismiss(animated: true, completion: nil)
                }
            }
            alertController.addAction(OKAction)
            self.present(alertController, animated: true, completion:nil)
    }
}