using Microsoft.AspNetCore.Http;
using System;
using System.Collections.Generic;
using System.Data;
using System.Text;
using System.Net;
using Newtonsoft.Json.Linq;
using Newtonsoft.Json;
using System.Net.Http;
namespace DllUnityBll
{
    public class HttpHelp
    {
        public static DataSet GetDataSetFromHttpRequest(HttpRequest request, ref string errorinfo)
        {
            try
            {
                long len = (long)request.ContentLength;
                byte[] datas = new byte[len];
                long lev = len;
                while (lev > 0)
                {
                    byte[] buffers = null;
                    int max = 0;
                    if (lev <= 1024)
                    {
                        buffers = new byte[lev];
                        max = (int)lev;
                    }
                    else
                    {
                        buffers = new byte[1024];
                        max = 1024;
                    }
                    int readlen = request.Body.Read(buffers, 0, max);
                    if (readlen > 0)
                    {
                        Array.Copy(buffers, 0, datas, len - lev, readlen);
                    }
                    lev = lev - readlen;
                }
                string jsonstr = System.Text.Encoding.Default.GetString(datas);
                DataSet reds = MsgPackage.StrToDataSet(jsonstr, ref errorinfo);
                return reds;
            }
            catch (Exception ex)
            {
                errorinfo = ex.Message.ToString();
                return null;
            }
        }

        public static string GetJsonStrFromHttpRequest(HttpRequest request, ref string errorinfo)
        {
            try
            {
                long len = (long)request.ContentLength;
                byte[] datas = new byte[len];
                long lev = len;
                while (lev > 0)
                {
                    byte[] buffers = null;
                    int max = 0;
                    if (lev <= 1024)
                    {
                        buffers = new byte[lev];
                        max = (int)lev;
                    }
                    else
                    {
                        buffers = new byte[1024];
                        max = 1024;
                    }
                    int readlen = request.Body.Read(buffers, 0, max);
                    if (readlen > 0)
                    {
                        Array.Copy(buffers, 0, datas, len - lev, readlen);
                    }
                    lev = lev - readlen;
                }
                string jsonstr = System.Text.Encoding.UTF8.GetString(datas);
                return jsonstr;
            }
            catch (Exception ex)
            {
                errorinfo = ex.Message.ToString();
                return null;
            }
        }
    }
}