import UIKit

class API : NSObject {

    class var sharedInstance: API {
        struct Static {
            static var instance: API?
            static var token: dispatch_once_t = 0
        }

        dispatch_once(&Static.token) {
            Static.instance = API()
        }

        return Static.instance!
    }

    func login(username: String, password: String, success: (BackendlessUser) -> Void, failure: (Int, String) -> Void) {
        let backendless = Backendless.sharedInstance()
        backendless.userService.login(username, password: password,
            response: { (user: BackendlessUser!) -> () in
                success(user)
            },
            error: { (fault: Fault!) -> () in

            }
        )
    }

}