using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Newtonsoft.Json;
using System.IO;
using System.Net;


namespace formula_manage.UserClass
{
    public class HttpSERVER
    {
        private static bool isExcute = true;
        private static HttpListener listener = new HttpListener();
        public static void Start()
        {
          System.Threading.ThreadPool.QueueUserWorkItem(w => Excute());//单独开启一个线程执行监听消息
        }
        private static void Excute()
        {
           if (HttpListener.IsSupported)
            {
                if (!listener.IsListening)
                {
                    listener.Prefixes.Add("http://127.0.0.1:8888/"); //添加需要监听的url
                    listener.Start(); //开始监听端口，接收客户端请求
                }
                while (isExcute)
                {
                    try
                    {
                        //阻塞主函数至接收到一个客户端请求为止  等待请求
                        HttpListenerContext context = listener.GetContext();
                        //解析请求
                        HttpListenerRequest request = context.Request;
                        //构造响应
                        HttpListenerResponse response = context.Response;
                        //http请求方式：get，post等等
                        string httpMethod = request.HttpMethod?.ToLower();
                        string rawUrl = request.RawUrl;//不包括IP和端口
                        var Url = request.Url;//全路径

                        if (httpMethod == "get")
                        {
                            //获取查询参数 
                           var queryString = request.QueryString;
                            // 请求接口 test/method?id=5
                            //键值对方式 string val = queryString["key"];
                            //string val = queryString["id"];val的值是5
                        }
                        else if (httpMethod == "post")
                        {
                            //请求接口 test/postMethod 格式是json
                           //{
                           //    "id":5,
                            //     "name":"zs"
                            //}
                            //获取pots请求的请求体，json格式的字符串
                            var reader = new StreamReader(request.InputStream);
                            var questBody = reader.ReadToEnd();
                            if (!string.IsNullOrEmpty(rawUrl))
                            {
                                //这里可以直接用switch这个只是demo
                                if (rawUrl.Equals("/server/uploadgenconnected", StringComparison.OrdinalIgnoreCase))
                                {
                                    if (!string.IsNullOrEmpty(questBody))
                                    {
                                        UploadGenConnectedModel model = JsonConvert.DeserializeObject<UploadGenConnectedModel>(questBody);
                                        if (model != null)
                                        { 
                                            // To Do
                                        }
                                    }
                                }
                            }
                        }
                      
                        var responseString = string.Empty;
                       // 执行其他业务逻辑
                        //*****************
                        responseString = JsonConvert.SerializeObject(new { code = 1, msg = "发送成功" });
                        byte[] buffer = System.Text.Encoding.UTF8.GetBytes(responseString);
                        //对客户端输出相应信息.
                        response.ContentLength64 = buffer.Length;
                        //response.StatusCode = 200;
                        //response.ContentType = "text/plain";
                        //发送响应
                        using (System.IO.Stream output = response.OutputStream)
                       {
                            output.Write(buffer, 0, buffer.Length);
                        }
                    }
                    catch (Exception exceotion)
                    {
                       //Logger.Error("处理消息异常", exceotion);
                       string str = exceotion.Message;
                    }
                }
           }
           else
           {
               //Logger.Info("系统不支持HttpListener");
           }
        }

        public static void Stop()
        {
            isExcute = false;
            if (listener.IsListening)
                listener.Stop();
        }
    }

    public class UploadGenConnectedModel
    { 
        public bool GenConnected { get; set; }
    }
}