APIClient.swift

//
//  APIClient.swift
//  
//
//  Created by Radwa Muhammad on 6/11/15.
//  Copyright (c) 2015 Radwa Muhammad. All rights reserved.
//
import Foundation
import Alamofire
import SwiftyJSON

enum KeyFields: String {
/*
// list all the API keys that you will use to parse the JSON data
//ex.
  case kLanguage = "local"
  case kArabic = "ar"
  case kEnglish = "eng"
  case kErrorMessage = "Message"
  */
}

enum MethodPath: String {
/*
// List all the relative urls (web service method pathes)
//ex.
  case notificationsPath = "item/notifications?"
  case newsPath = "item/news"
  case contactinfoPath = "index/contactinfo"
*/
}

//  protocol APIProtocol {
//    func didReceiveResult(results: JSON)
//  }

  class APIClient {
    let hostName = "http://xxxx.xxx/"  //base url
    
  func get(path: MethodPath, parameters: [String: AnyObject]? = nil, completionHandler: (JSON?, NSError?, String?) -> Void)-> Void {
    
    let url = "\(self.hostName)\(path.rawValue)"
   // NSLog("Preparing for GET request to: \(url)")
    
    Alamofire.request(.GET, url, parameters: parameters)
      .validate(statusCode: 200..<300)

      .responseJSON { (request, response, data, error) in

        if(error != nil) { //is there's error
          NSLog("GET Error: \(error)")
          println(response)
          completionHandler(nil,error,nil)
        }
        else  if let data: AnyObject = data {
          var json = JSON(data) as JSON
          NSLog("GET Result: \(json)")
          if json[0][KeyFields.kErrorMessage.rawValue] != nil { //is there error message
            completionHandler(nil,nil,json[KeyFields.kErrorMessage.rawValue].stringValue)
          }
          else{ //else then everything is okay
            completionHandler(json,nil,nil)
          }
        }
        else{ // JSON response is empty
          completionHandler(nil,nil,nil)

        }
    }
    }

    func post(path: MethodPath, parameters: [String: AnyObject]? = nil, completionHandler: (JSON?, NSError?, String?) -> Void)-> Void {
      
      let url = "\(self.hostName)\(path.rawValue)"
     // NSLog("Preparing for POST request to: \(url)")
      
      Alamofire.request(.POST, url, parameters: parameters)
        .validate(statusCode: 200..<300)
        .responseJSON { (request, response, data, error) in
          if(error != nil) { //is there error
            NSLog("GET Error: \(error)")
            println(response)
            completionHandler(nil,error,nil)
          }
          else  if let data: AnyObject = data {
            var json = JSON(data) as JSON
         //    NSLog("GET Result: \(json)")
            if json[0][KeyFields.kErrorMessage.rawValue][KeyFields.kMessage.rawValue].string != "DONE" { //is there error message
              completionHandler(nil,nil,json[KeyFields.kErrorMessage.rawValue][KeyFields.kMessage.rawValue].stringValue)
            }
            else{ //else then everything is okay
              completionHandler(json,nil,nil)
            }
          }
          else{ // JSON response is empty
            completionHandler(nil,nil,nil)
            
          }
      }
    }

}