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

namespace HH.WCS.ZhongCeJinTan.util
{
    public class HttpHelper
    {

        /// <summary>
        /// MD5加密
        /// </summary>
        /// <param name="sInput"></param>
        /// <returns></returns>
        public static string GetMd5FromString(string sInput)
        {
            var lstData = Encoding.GetEncoding("utf-8").GetBytes(sInput);
            var lstHash = new MD5CryptoServiceProvider().ComputeHash(lstData);
            var result = new StringBuilder(32);
            for (int i = 0; i < lstHash.Length; i++)
            {
                result.Append(lstHash[i].ToString("x2").ToUpper());
            }
            return result.ToString();
        }

        public string WebPost(string url, string postData, string cotentType = "application/json") {

            //配置鉴权
            //var AppKey = Settings.AppKey;
            //var AppSecret = Settings.AppSecret;
            ////获取时间戳
            //var ReqTime = DateTimeOffset.UtcNow.ToUnixTimeSeconds().ToString();
            ////var ReqTime = GetTimeStamp(DateTime.Now.AddHours(-8), 1, 2);
            //LogHelper.Info($"加密前 AppKey={AppKey} AppSecret={AppSecret} ReqTime={ReqTime} ");
            //LogHelper.Info($"地址：{url},内容：{postData}");
            //var ReqVerify = GetMd5FromString(AppKey + AppSecret + ReqTime);
            //LogHelper.Info($"加密后 AppKey={AppKey} AppSecret={AppSecret} ReqTime={ReqTime} ReqVerify={ReqVerify} url={url} req={postData}");
            //request.Headers.Add("ReqTime", ReqTime.ToString());
            //request.Headers.Add("ReqVerify", ReqVerify);
            //request.Headers.Add("AppKey", AppKey);


            Console.WriteLine(url);
            WebRequest request = WebRequest.Create(url);
            request.Method = "POST";
            //string postData = JsonConvert.SerializeObject(data); ;
            byte[] byteArray = Encoding.UTF8.GetBytes(postData);
            request.ContentType = cotentType;
            request.ContentLength = byteArray.Length;
            request.Timeout = 6000;

          

            try {
                Stream dataStream = request.GetRequestStream();
                dataStream.Write(byteArray, 0, byteArray.Length);
                dataStream.Close();
                WebResponse response = request.GetResponse();
                //Console.WriteLine(((HttpWebResponse)response).StatusDescription);
                dataStream = response.GetResponseStream();
                StreamReader reader = new StreamReader(dataStream, Encoding.UTF8);
                string responseFromServer = reader.ReadToEnd();
                reader.Close();
                dataStream.Close();
                response.Close();
                return responseFromServer;
            }
            catch (Exception e) {
                Console.WriteLine(e.Message);
                return "";
            }
        }

        public string WebGet(string url) {
            //using (var client = new HttpClient()) {
            //	//请求结果
            //	string result = client.GetAsync(url).Result.Content.ReadAsStringAsync().Result;

            //	Console.WriteLine(result);
            //	return result;

            //}
            //Console.WriteLine(url);
            WebRequest request = WebRequest.Create(url);
            request.Timeout = 6000;
            request.Method = "GET";

            try {
                WebResponse response = request.GetResponse();
                Stream dataStream = response.GetResponseStream();
                StreamReader reader = new StreamReader(dataStream);
                string responseFromServer = reader.ReadToEnd();

                reader.Close();
                dataStream.Close();
                response.Close();
                Console.WriteLine(responseFromServer);
                return responseFromServer;
            }
            catch (Exception e) {
                return "";
            }
        }

		public string Get(string url, string contentType = "application/x-www-form-urlencoded") {
			WebRequest request = WebRequest.Create(url);
			request.Method = "Get";
			request.ContentType = contentType;
			StreamReader reader = null;
			Stream stream = null;
			WebResponse rsp = null;
			try {

				rsp = request.GetResponse();
				stream = rsp.GetResponseStream();
				reader = new StreamReader(stream);
				return reader.ReadToEnd();
			}
			catch {
				return "";
			}
			finally {
				// 释放资源
				if (reader != null) reader.Close();
				if (stream != null) stream.Close();
				if (rsp != null) rsp.Close();
			}

		}

        public string Put(string url, string postData, string contentType = "application/json", string sessionId = "")
        {
            WebRequest request = WebRequest.Create(url);
            request.Method = "Put";
            byte[] byteArray = Encoding.UTF8.GetBytes(postData);
            request.ContentType = contentType;
            request.ContentLength = byteArray.Length;
            if (sessionId != "")
            {
                request.Headers.Set("ASP.NET_SessionId", sessionId);
            }
            StreamReader reader = null;
            Stream stream = null;
            WebResponse rsp = null;
            try
            {
                stream = request.GetRequestStream();
                stream.Write(byteArray, 0, byteArray.Length);
                stream.Close();
                rsp = request.GetResponse();
                stream = rsp.GetResponseStream();
                reader = new StreamReader(stream);
                return reader.ReadToEnd();
            }
            catch
            {
                return "";
            }
            finally
            {
                // 释放资源
                if (reader != null) reader.Close();
                if (stream != null) stream.Close();
                if (rsp != null) rsp.Close();
            }

        }

        public string Post(string url, string postData, string contentType = "application/json", string sessionId = "") {
			WebRequest request = WebRequest.Create(url);
			request.Method = "POST";
			byte[] byteArray = Encoding.UTF8.GetBytes(postData);
			request.ContentType = contentType;
			request.ContentLength = byteArray.Length;
			if (sessionId != "") {
				request.Headers.Set("ASP.NET_SessionId", sessionId);
			}
			StreamReader reader = null;
			Stream stream = null;
			WebResponse rsp = null;
			try {
				stream = request.GetRequestStream();
				stream.Write(byteArray, 0, byteArray.Length);
				stream.Close();
				rsp = request.GetResponse();
				stream = rsp.GetResponseStream();
				reader = new StreamReader(stream);
				return reader.ReadToEnd();
			}
			catch {
				return "";
			}
			finally {
				// 释放资源
				if (reader != null) reader.Close();
				if (stream != null) stream.Close();
				if (rsp != null) rsp.Close();
			}

		}


		public string Post(string url, Dictionary<string, string> dic) {
			var param = dic.Select(a => { return string.Format("{0}={1}", a.Key, a.Value); }).ToList();
			return Post(url, string.Join("&", param), "application/x-www-form-urlencoded");

		}

		public string PostWithCookie(string url, string sessinId) {
			return PostWithCookie(url, "", "", sessinId);
		}
		public string PostWithCookie(string url, string postData, string contentType = "application/json", string sessionId = "") {
			HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
			request.Method = "POST";
			byte[] byteArray = Encoding.UTF8.GetBytes(postData);
			request.ContentType = contentType;
			request.ContentLength = byteArray.Length;
			if (sessionId != "") {
				request.CookieContainer = new CookieContainer();
				request.CookieContainer.SetCookies(new Uri("http://" + request.RequestUri.Authority), "ASP.NET_SessionId=" + sessionId);
			}
			StreamReader reader = null;
			Stream stream = null;
			WebResponse rsp = null;
			try {
				stream = request.GetRequestStream();
				stream.Write(byteArray, 0, byteArray.Length);
				stream.Close();
				rsp = request.GetResponse();
				stream = rsp.GetResponseStream();
				reader = new StreamReader(stream);
				return reader.ReadToEnd();
			}
			catch {
				return "";
			}
			finally {
				// 释放资源
				if (reader != null) reader.Close();
				if (stream != null) stream.Close();
				if (rsp != null) rsp.Close();
			}

		}


	}
}