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

namespace ConsoleApp1.Controller.Sql_controller
{
    /// <summary>
    /// Post方式提交数据，返回网页的源代码
    /// </summary>
    /// <param name="url">发送请求的 URL</param>
    /// <param name="param">请求的参数集合</param>
    /// <returns>远程资源的响应结果</returns>
    public class HttpHepler
    {
        /// <summary>
        /// Post方式提交数据，返回网页的源代码
        /// </summary>
        /// <param name="url">发送请求的 URL</param>
        /// <param name="param">请求的参数集合</param>
        /// <returns>远程资源的响应结果</returns>
        public string sendPost(string url, Dictionary<string, string> param)
        {
            string result = "";
            StringBuilder postData = new StringBuilder();
            if (param != null && param.Count > 0)
            {
                foreach (var p in param)
                {
                    if (postData.Length > 0)
                    {
                        postData.Append("&");
                    }
                    postData.Append(p.Key);
                    postData.Append("=");
                    postData.Append(p.Value);
                }
            }
            byte[] byteData = Encoding.GetEncoding("UTF-8").GetBytes(postData.ToString());
            try
            {

                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
                request.ContentType = "application/x-www-form-urlencoded";
                request.Referer = url;
                request.Accept = "*/*";
                request.Timeout = 30 * 1000;
                request.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)";
                request.Method = "POST";
                request.ContentLength = byteData.Length;
                Stream stream = request.GetRequestStream();
                stream.Write(byteData, 0, byteData.Length);
                stream.Flush();
                stream.Close();
                HttpWebResponse response = (HttpWebResponse)request.GetResponse();
                Stream backStream = response.GetResponseStream();
                StreamReader sr = new StreamReader(backStream, Encoding.GetEncoding("UTF-8"));
                result = sr.ReadToEnd();
                sr.Close();
                backStream.Close();
                response.Close();
                request.Abort();
            }
            catch (Exception ex)
            {
                result = ex.Message;
            }
            return result;
        }

        /// <summary>
        /// Post方法提交数据
        /// </summary>
        /// <param name="url">发送请求的 URL</param>
        /// <param name="postDataStr">Json参数</param>
        /// <returns></returns>
        public string HttpPost(string url, string postDataStr)
        {
            Encoding encode = System.Text.Encoding.GetEncoding("utf-8");
            byte[] arrB = encode.GetBytes(postDataStr);
            HttpWebRequest myReq = (HttpWebRequest)WebRequest.Create(url);
            myReq.Method = "POST";
            myReq.ContentType = "application/json";
            myReq.ContentLength = arrB.Length;
            Stream outStream = myReq.GetRequestStream();
            outStream.Write(arrB, 0, arrB.Length);
            outStream.Close();
            //接收HTTP做出的响应
            WebResponse myResp = myReq.GetResponse();
            Stream ReceiveStream = myResp.GetResponseStream();
            StreamReader readStream = new StreamReader(ReceiveStream, encode);
            Char[] read = new Char[256];
            int count = readStream.Read(read, 0, 256);
            string str = null;
            while (count > 0)
            {
                str += new String(read, 0, count);
                count = readStream.Read(read, 0, 256);
            }
            readStream.Close();
            myResp.Close();

            return str;
        }


        /// <summary>
        /// Get方式提交数据
        /// </summary>
        /// <param name="methodname"></param>
        /// <returns></returns>
        public object retObject(string methodname)
        {
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(methodname);
            request.Method = "GET";
            request.ContentType = "text/html;charset=UTF-8";
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            Stream myResponseStream = response.GetResponseStream();
            StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.UTF8);
            string retString = myStreamReader.ReadToEnd();

            var retObject = (JObject)JsonConvert.DeserializeObject(retString);
            return retObject;
        }

        /// <summary>
        /// Json解析
        /// </summary>
        /// <param name="result"></param>
        /// <returns></returns>
        public string[] jsons(string result)
        {
            JObject jo = JObject.Parse(result);
            string[] values1 = jo.Properties().Select(item => item.Value.ToString()).ToArray();
            return values1;
        }
    }
}