using System;
using System.Collections.Generic;
using System.IO;
using System.IO.Compression;
using System.Linq;
using System.Net;
using System.Net.NetworkInformation;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Xml.Linq;

namespace Ultron.Ngrok.Utils
{
    public class HttpUtils
    {
        public static void HttpGet(string url)
        {
            WebClient wc = new WebClient();
            Uri uri = new Uri(url, UriKind.RelativeOrAbsolute);
            wc.OpenReadCompleted += new OpenReadCompletedEventHandler(wc_OpenReadCompleted);
            wc.OpenReadAsync(uri);
        }
        public static void wc_OpenReadCompleted(object sender, OpenReadCompletedEventArgs e)
        {
            StreamReader read = new StreamReader(e.Result);
            string str = read.ReadToEnd();
        }
        
        public static void HttpPostAsync(string url,string postData)
        {
            HttpWebRequest request = HttpWebRequest.Create(url) as HttpWebRequest;
            request.Timeout = 30000;
            request.Method = "post"; ;
            request.ContentType = "application/json;charset=UTF-8";
            StatePara para = new StatePara
            {
                RequestInfo = request,
                PostData = postData
            };
            request.BeginGetRequestStream(GetRequestStreamCallback, para);
        }

        private static void GetRequestStreamCallback(IAsyncResult asyncResult)
        {
            StatePara para = (StatePara)asyncResult.AsyncState;
            try
            {
                para.RequestInfo.BeginGetResponse(GetResponseCallback, para);
            }
            catch (Exception ex)
            {
                string retString = ex.Message;
            }
        }
        private static void GetResponseCallback(IAsyncResult asyncResult)
        {
            string retString = "";
            StatePara para = (StatePara)asyncResult.AsyncState;
            IAsyncResult IAResult = para.RequestInfo as IAsyncResult;
            try
            {
                HttpWebRequest request = para.RequestInfo;
                HttpWebResponse response = (HttpWebResponse)request.EndGetResponse(asyncResult);


                if (response.ContentEncoding.ToLower().Contains("gzip"))
                {
                    using (var gzip = new GZipStream(response.GetResponseStream(), CompressionMode.Decompress))
                    {

                        var reader = new StreamReader(gzip, Encoding.GetEncoding("utf-8"));
                        retString = reader.ReadToEnd();
                        reader.Close();
                    }
                }
                else
                {
                    Stream myResponseStream = response.GetResponseStream();
                    StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("utf-8"));
                    retString = myStreamReader.ReadToEnd();
                    myStreamReader.Close();
                    myResponseStream.Close();
                }
            }
            catch (Exception ex)
            {
                retString = ex.Message;
            }
        }
        
        class StatePara
        {
            public HttpWebRequest RequestInfo { get; set; }

            public string PostData { get; set; }

            public string ServerType { get; set; }

        }
    }
}