smsapi for bdd dev

smsapi.swift

import Alamofire

enum APIResult {
  case Success
  case Fail(NSError)
  
  func isSuccess() -> Bool {
    switch self {
    case .Success: return true
    case .Fail: return false
    }
  }
}

typealias APICallback = APIResult -> ()

class SMSAPI {
  class func sendSMS(number: String, text: String, callback: APICallback?) {
    let url = "http://my.api.host/api/sendsms"
    var body = ["tel" : number, "sms" : text]

    Alamofire.request(.POST, url, parameters: body, encoding: .JSON)
    .responseJSON(options: .MutableContainers) { (request, response, JSON, error) -> Void in
      let code = response.statusCode
      if code == 200 {
        callback?(.Success)
      }
      else {
        var userInfo: [String : String!]? = nil
        if let errorDesc = JSON?["message"] as? String {
          userInfo = [NSLocalizedDescriptionKey : errorDesc]
        }
        let error = NSError(domain: "SMSME", code: code!, userInfo: userInfo)
        callback?(.Fail(error))
      }
    }  
  }
}