if success {

            }

            }) { (error) in

import UIKit
    import Alamofire
    import SwiftyJSON

struct Singleton {
  static let instance : APIManager = APIManager()
}

public class APIManager: NSObject {
  public class var sharedInstance: APIManager {
    return Singleton.instance
  }

  let manager = Manager()

  override init() {

  }

  //MARK:====Login====

  //MARK: methods

  func login(username: String, password: String, completion: (user: User, success: Bool) -> (), failed:(error: NSError) -> ()) -> Request {
    let urlRequest // Create a URLRequest and pass to the method

    return manager.request(urlRequest)
      .validate()
      .responseJSON { response in
        if let error = response.result.error {
          failed(error: error)
          print(error)
          return;
        }
        let ok = ((response.result.value as! JSONDictionary)["success"] as? Bool)!
        let userJson = JSON((response.result.value as! JSONDictionary)["user"]!)

        let token = ((response.result.value as! JSONDictionary)["token"] as? String)!
        NSUserDefaults.standardUserDefaults().setValue(token, forKey: UserDefaultKey.Token)
        NSUserDefaults.standardUserDefaults().synchronize()
        let user = User(json: userJson)
        completion(user: user,success: ok)

        print ("Auth is :  (token)")


    }
  }
}