using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net.Security;
using System.Net;
using System.Security.Cryptography.X509Certificates;
using System.Text;
using System.Threading.Tasks;

namespace BayonetTransfer.Common
{
    internal class HttpHelper
    {
        #region 方法 -> HttpGet

        /// <summary>
        /// Post请求方法
        /// </summary>
        /// <param name="postData"></param>
        /// <param name="requestURL"></param>
        /// <param name="contentType"></param>
        /// <param name="timeOut"></param>
        /// <returns></returns>
        public static string HttpGet(string postData, string requestURL, string contentType = "application/x-www-form-urlencoded", int timeOut = 0)
        {
            try
            {
                CookieContainer cookieContainer = new CookieContainer();
                byte[] postBytes = Encoding.UTF8.GetBytes(postData);
                // 设置提交的相关参数
                ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(requestURL);
                if (timeOut == 0)
                {
                    timeOut = 5;
                }
                request.Timeout = timeOut * 1000;
                request.Method = "Get";
                request.KeepAlive = false;
                request.ContentType = contentType;
                request.CookieContainer = cookieContainer;

                using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
                {
                    //在这里对接收到的页面内容进行处理
                    Stream responseStream = response.GetResponseStream();
                    using (StreamReader reader = new StreamReader(responseStream, Encoding.UTF8))
                    {
                        return reader.ReadToEnd();
                    }
                }
            }
            catch (WebException wex)
            {
                return wex.ToString();
            }
            catch (Exception ex)
            {
                return ex.Message;
            }
        }
        #endregion

        #region 方法 -> HttpPost

        /// <summary>
        /// Post请求方法
        /// </summary>
        /// <param name="postData"></param>
        /// <param name="requestURL"></param>
        /// <param name="contentType"></param>
        /// <param name="timeOut"></param>
        /// <returns></returns>
        public static string HttpPost(string postData, string requestURL, string contentType = "application/x-www-form-urlencoded", int timeOut = 0)
        {
            CookieContainer cookieContainer = new CookieContainer();
            byte[] postBytes = Encoding.UTF8.GetBytes(postData);
            // 设置提交的相关参数
            ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(requestURL);
            if (timeOut == 0)
            {
                timeOut = 5;
            }
            request.Timeout = timeOut * 1000;
            request.Method = "POST";
            request.KeepAlive = false;
            request.ContentType = contentType;
            request.CookieContainer = cookieContainer;
            request.ContentLength = postBytes.Length;

            using (Stream reqStream = request.GetRequestStream())
            {
                //LogHelper.WriteSendLog("==开始写数据==");
                reqStream.Write(postBytes, 0, postBytes.Length);
                //LogHelper.WriteSendLog("==写入完成==");
            }
            using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
            {
                //在这里对接收到的页面内容进行处理
                //直到request.GetResponse()程序才开始向目标网页发送post请求
                Stream responseStream = response.GetResponseStream();
                using (StreamReader reader = new StreamReader(responseStream, Encoding.UTF8))
                {
                    return reader.ReadToEnd();
                }
            }
        }

        private static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
        {
            return true;
        }
        #endregion
    }
}