//
// ViewController.swift
// testswift
//
// Created by TommyLemon on 17/11/28.
// Copyright © 2017年 https://github.com/TommyLemon/APIJSON . All rights reserved.
//

import UIKit

class ViewController: UIViewController {

 override func viewDidLoad() {
 super.viewDidLoad()
 // Do any additional setup after loading the view, typically from a nib.
 
 
 test()
 }

 override func didReceiveMemoryWarning() {
 super.didReceiveMemoryWarning()
 // Dispose of any resources that can be recreated.
 }
 
 
 
 /**
 * 通过POST请求测试APIJSON
 */
 func test() {
 
 let url = "http://apijson.cn:8080/get";
 //要发送的请求数据
 let json = [
 //返回数据太长 "[]": [
 "User": [ //如果对象value是空的,请用[:]表示value,否则会被Swift解析为空数组[],而不是空对象{}
 "sex": 1
 ]
 //]
 ]

 let req = toJSONString(json);

 print("start http request...\n\nURL = " + url + "\nRequest = \n" + req)
 
 //生成UI <<<<<<<<<<<<<<<<<<<<<<
 
 
 let requestLabel = UILabel(frame:CGRect(x:20, y:10, width:400, height:130))
 requestLabel.text = "Request:\n" + req;
 requestLabel.numberOfLines = 6
 self.view.addSubview(requestLabel)
 
 let responseLabel = UILabel(frame:CGRect(x:20, y:130, width:400, height:600))
 responseLabel.text = "request..."
 responseLabel.numberOfLines = 100
 self.view.addSubview(responseLabel)
 
 //生成UI >>>>>>>>>>>>>>>>>>>>>
 
 
 

 
 //请求URL
 
 let request = NSMutableURLRequest(url: URL(string: url)!)
 
 request.httpMethod = "POST"
 //设置发送的数据格式为JSON
 request.setValue("application/json", forHTTPHeaderField: "Content-Type")
 do {
 request.httpBody = try JSONSerialization.data(withJSONObject: json, options: JSONSerialization.WritingOptions.prettyPrinted)
 } catch {
 print("Something went wrong!")
 }
 
 //默认session配置
 let config = URLSessionConfiguration.default
 let session = URLSession(configuration: config)
 
 //发起请求
 let dataTask = session.dataTask(with: request as URLRequest) { (data, response, error) in
 
 print("\n\nreceived result!\n\n")

 print(data)
 print(response)
 print(error)
 
 //数据类型转换
 let jsonData:NSDictionary = try! JSONSerialization.jsonObject(with: data!, options: .mutableContainers) as! NSDictionary
 
 print(jsonData)
 
 let res:String = self.toJSONString(jsonData as! [String : Any]);
 print("Response = \n" + res)
 
 
 //显示返回结果
 DispatchQueue.main.async {
 
 responseLabel.text = "Response:\n" + res
 print("set text end\n\n")
 }
 
 }
 
 //请求开始
 dataTask.resume()
 }
 
 func toJSONString(_ jsonData: [String: Any]!) -> String {
 guard let data = try? JSONSerialization.data(withJSONObject: jsonData!, options: [JSONSerialization.WritingOptions.prettyPrinted]) else {
 return ""
 }
 let str = String(data: data, encoding: String.Encoding.utf8)
 return str!
 }
 

}