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 NXWMS.Code.Net
{
    /// <summary>
    /// Http请求帮助类
    /// </summary>
    public class HttpRequestHelper
    {
        /// <summary>
        /// 票据
        /// </summary>
        public string _Ticket { get; set;}

        /// <summary>
        /// Get请求返回响应
        /// </summary>
        /// <param name="url"></param>
        /// <param name="parms"></param>
        /// <returns></returns>
        public string GET(string url, string parms)
        {
            url = url + parms;
            HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
            request.Method = "GET"; 
            HttpWebResponse res;
            try
            {
                res = (HttpWebResponse)request.GetResponse();  
            }
            catch (WebException ex)
            {
                res = (HttpWebResponse)ex.Response;
            }
            StreamReader sr = new StreamReader(res.GetResponseStream(), Encoding.UTF8);
            string content = sr.ReadToEnd();  
            return content;
        }


        /// <summary>
        /// Post请求返回响应
        /// </summary>
        /// <param name="url"></param>
        /// <param name="pramstr"></param>
        /// <param name="param"></param>
        /// <returns></returns>
        public string POST(string url, string pramstr = null, 
                Dictionary<String, String> param = null)
        {
            HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;  
            CookieContainer cookieContainer = new CookieContainer();
            request.CookieContainer = cookieContainer;
            request.AllowAutoRedirect = true;
            request.MaximumResponseHeadersLength = 1024;
            request.Method = "POST"; //请求方式为post
            request.AllowAutoRedirect = true;
            request.MaximumResponseHeadersLength = 1024;
            request.ContentType = "application/json";
            if (!string.IsNullOrWhiteSpace(_Ticket))
            {
                request.Headers.Add("Authorization", "Bearer " + _Ticket);
            }
            JObject json = new JObject();
            string jsonstring = string.Empty; 
            if (param != null)
            {
                if (param.Count != 0)  
                {
                    foreach (var item in param)
                    {
                        json.Add(item.Key, item.Value);
                    }
                }
                jsonstring = json.ToString(); 
            }
            else if (!string.IsNullOrWhiteSpace(pramstr))
            {
                jsonstring = pramstr;
            }
            else
            {
                jsonstring = "";
            }

            byte[] jsonbyte = Encoding.UTF8.GetBytes(jsonstring);
             Stream postStream = request.GetRequestStream();
            postStream.Write(jsonbyte, 0, jsonbyte.Length);
            postStream.Close();     
            HttpWebResponse res;
            try
            {
                res = (HttpWebResponse)request.GetResponse();
            }
            catch (WebException ex)
            {
                res = (HttpWebResponse)ex.Response;
            }
            StreamReader sr = new StreamReader(res.GetResponseStream(), Encoding.UTF8);
            string content = sr.ReadToEnd(); 
            return content;
        }

        /// <summary>
        /// Post数据流
        /// </summary>
        /// <param name="url"></param>
        /// <param name="arrAy"></param>
        /// <param name="parms"></param>
        /// <returns></returns>
        public string POSTStream(string url, byte[] arrAy, string parms)
        {
            HttpWebResponse res;
            try
            {
                Encoding encode = System.Text.Encoding.GetEncoding("utf-8");
                byte[] arrB = arrAy;
                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
                request.Method = "POST";
                request.ContentType = "application/x-www-form-urlencoded";
                request.ContentLength = arrB.Length;
                Stream outStream = request.GetRequestStream();
                outStream.Write(arrB, 0, arrB.Length);
                outStream.Close();
                res = (HttpWebResponse)request.GetResponse();
            }
            catch (WebException ex)
            {
                res = (HttpWebResponse)ex.Response;
            }
            StreamReader sr = new StreamReader(res.GetResponseStream(), Encoding.UTF8);
            string content = sr.ReadToEnd();  
            return content;
        }
    }
}