using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Web;

namespace DispatchWeb.Helper
{
    public static class WebRequestHelper
    {
        public static string DoGet(string url, string userData)
        {
            string responseString = "";//post返回的结果
            ServicePointManager.ServerCertificateValidationCallback += (sender, cert, chain, err) => { return true; };
            ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls;
            HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(url);
            req.Method = "GET";
            req.ContentLength = 0;
            if (!string.IsNullOrWhiteSpace(userData))
            {
                req.Headers.Add("UserData", userData);
            }

            var response = req.GetResponse();
            Stream streamResponse = response.GetResponseStream();
            StreamReader streamRead = new StreamReader(streamResponse);
            responseString = streamRead.ReadToEnd();
            response.Close();
            streamRead.Close();

            return responseString;
        }

        public static string DoPost(string url, string json, string userData)
        {
            string responseString = "";//post返回的结果
            ServicePointManager.ServerCertificateValidationCallback += (sender, cert, chain, err) => { return true; };
            ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls;
            HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(url);
            req.Method = "POST";
            if (!string.IsNullOrWhiteSpace(userData))
            {
                req.Headers.Add("UserData", userData);
            }

            if (!string.IsNullOrWhiteSpace(json))
            {
                byte[] postBytes = Encoding.UTF8.GetBytes(json);
                req.ContentType = "application/json; charset=utf-8";
                req.ContentLength = Encoding.UTF8.GetByteCount(json);
                Stream stream = req.GetRequestStream();
                stream.Write(postBytes, 0, postBytes.Length);
                req.Timeout = 10000;
                stream.Close();
            }
            else
            {
                req.ContentLength = 0;
            }
            var response = req.GetResponse();
            Stream streamResponse = response.GetResponseStream();
            StreamReader streamRead = new StreamReader(streamResponse);
            responseString = streamRead.ReadToEnd();
            response.Close();
            streamRead.Close();

            return responseString;
        }
    }
}