using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Security.Policy;
using System.Text;
using Newtonsoft.Json;


namespace Aitex.Core.MES
{
    internal class HttpClient
    {
        /// <summary>
        /// 调用mes基础方法
        /// </summary>
        /// <param name="url"></param>
        /// <param name="para"></param>
        /// <returns></returns>
        public static string HttpPost(string url, IDictionary<string, string> para)
        {
            try
            {
                Encoding encoding = Encoding.UTF8;
                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
                request.Method = "POST";
                request.Accept = "text/html, application/xhtml+xml, */*";
                request.ContentType = "application/x-www-form-urlencoded ";//根据服务端进行 切换
                request.Timeout = 1000;

                StringBuilder buffer = new StringBuilder();
                int i = 0;
                foreach (string key in para.Keys)
                {
                    if (i > 0)
                    {
                        buffer.AppendFormat("&{0}={1}", key, para[key]);
                    }
                    else
                    {
                        buffer.AppendFormat("{0}={1}", key, para[key]);
                    }
                    i++;
                }
                byte[] buffer2 = encoding.GetBytes(buffer.ToString());
                request.ContentLength = buffer2.Length;
                request.GetRequestStream().Write(buffer2, 0, buffer2.Length);
                HttpWebResponse response = (HttpWebResponse)request.GetResponse();
                using (StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
                {
                    return reader.ReadToEnd();
                }
            }
            catch (Exception ex)
            {
                return ex.Message;
            }
           

        }
        public static string PostResponse(string url, string postData, out string statusCode)
        {
            string result = string.Empty;
            //设置Http的正文
            HttpContent httpContent = new StringContent(postData);
            //设置Http的内容标头
            httpContent.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("application/json");
            //设置Http的内容标头的字符
            httpContent.Headers.ContentType.CharSet = "utf-8";
            using (System.Net.Http.HttpClient httpClient = new System.Net.Http.HttpClient())
            {
                //异步Post
                HttpResponseMessage response = httpClient.PostAsync(url, httpContent).Result;
                //输出Http响应状态码
                statusCode = response.StatusCode.ToString();
                //确保Http响应成功
                if (response.IsSuccessStatusCode)
                {
                    //异步读取json
                    result = response.Content.ReadAsStringAsync().Result;
                }
            }
            return result;
        }
        public static string HttpGet(string url)
        {
            string strRet = string.Empty;
            try
            {
                //url = "http://58.220.255.234:1005/api/mes/GetRecipeBySingleLot?strQuery=123";
                //把URL初始化为新的WebRequest
                HttpWebRequest Request = WebRequest.Create(url) as HttpWebRequest;
                Request.Method = "GET";
                //超时时间是2秒
                Request.Timeout = 2000;
                //初始化HTTP响应
                HttpWebResponse Response = Request.GetResponse() as HttpWebResponse;
                //获取HTTP响应流
                Stream resStream = Response.GetResponseStream();

                //读取数据流
                using (StreamReader reader = new StreamReader(resStream))
                {
                    strRet= reader.ReadToEnd();
                    return strRet;
                }
             

                ////把数据流放到Char数组中
                //Char[] read = new Char[256];
                //int count = readStream.Read(read, 0, 256);
                ////开始读
                //while (count > 0)
                //{
                // string str = new string(read, 0, count);
                // //读出
                // strRet += str;
                // count = readStream.Read(read, 0, 256);
                //}
                //readStream.Close();
            }
            catch (Exception ex)
            {
                strRet = ex.Message;
            }

            return strRet;
        }
    }
}