using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;

namespace ZD.Share.Common
{
    public class HttpHelper
    {
        //public static string PostData(string url, string postData)
        //{
        //    ASCIIEncoding encoding = new ASCIIEncoding();
        //    byte[] data = Encoding.UTF8.GetBytes(postData);
        //    HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(url);

        //    myRequest.Method = "POST";
        //    myRequest.ContentType = "application/x-www-form-urlencoded";
        //    myRequest.ContentLength = data.Length;
        //    Stream newStream = myRequest.GetRequestStream();

        //    newStream.Write(data, 0, data.Length);
        //    newStream.Close();

        //    HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
        //    StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);
        //    string content = reader.ReadToEnd();
        //    reader.Close();
        //    return content;
        //}

        //public static string GetData(string url)
        //{
        //    HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(url);
        //    myRequest.Method = "GET";
        //    HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
        //    StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);
        //    string content = reader.ReadToEnd();
        //    reader.Close();
        //    return content;
        //}

        public static string HttpPostJson(string url, Dictionary<string, string> keyValues)
        {

            HttpClient httpClient = new HttpClient();
            httpClient.DefaultRequestHeaders.Add("Accept", "application/json");
            var body = new FormUrlEncodedContent(keyValues);
            var response = httpClient.PostAsync(url, body).Result;
            var data = response.Content.ReadAsStringAsync().Result;
            return data;
        }

        public static string PostAsyncJson(string url, string json)
        {
            HttpClient client = new HttpClient();
            HttpContent content = new StringContent(json);
            content.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("application/json");
            HttpResponseMessage response = client.PostAsync(url, content).Result;
            string responseBody = response.Content.ReadAsStringAsync().Result;
            return responseBody;
        }

        ///// <summary>
        ///// FORM表单POST方式上传一个多媒体文件
        ///// </summary>
        ///// <param name="url">API URL</param>
        ///// <param name="typeName"></param>
        ///// <param name="fileName"></param>
        ///// <param name="fs"></param>
        ///// <param name="encoding"></param>
        ///// <returns></returns>
        //public static string HttpRequestPost(string url, string typeName, string fileName, Stream fs, string encoding = "UTF-8")
        //{
        //    HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
        //    request.Method = "POST";
        //    request.Timeout = 10000;
        //    var postStream = new MemoryStream();
        //    #region 处理Form表单文件上传
        //    //通过表单上传文件
        //    string boundary = "----" + DateTime.Now.Ticks.ToString("x");
        //    string formdataTemplate = "\r\n--" + boundary + "\r\nContent-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\nContent-Type: application/octet-stream\r\n\r\n";
        //    try
        //    {
        //        var formdata = string.Format(formdataTemplate, typeName, fileName);
        //        var formdataBytes = Encoding.ASCII.GetBytes(postStream.Length == 0 ? formdata.Substring(2, formdata.Length - 2) : formdata);//第一行不需要换行
        //        postStream.Write(formdataBytes, 0, formdataBytes.Length);

        //        //写入文件
        //        byte[] buffer = new byte[1024];
        //        int bytesRead = 0;
        //        while ((bytesRead = fs.Read(buffer, 0, buffer.Length)) != 0)
        //        {
        //            postStream.Write(buffer, 0, bytesRead);
        //        }
        //    }
        //    catch (Exception ex)
        //    {
        //        throw ex;
        //    }

        //    //结尾
        //    var footer = Encoding.ASCII.GetBytes("\r\n--" + boundary + "--\r\n");
        //    postStream.Write(footer, 0, footer.Length);
        //    request.ContentType = string.Format("multipart/form-data; boundary={0}", boundary);
        //    #endregion

        //    request.ContentLength = postStream.Length;
        //    request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8";
        //    request.KeepAlive = true;
        //    request.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.57 Safari/537.36";

        //    #region 输入二进制流
        //    if (postStream != null)
        //    {
        //        postStream.Position = 0;

        //        //直接写入流
        //        Stream requestStream = request.GetRequestStream();

        //        byte[] buffer = new byte[1024];
        //        int bytesRead = 0;
        //        while ((bytesRead = postStream.Read(buffer, 0, buffer.Length)) != 0)
        //        {
        //            requestStream.Write(buffer, 0, bytesRead);
        //        }

        //        postStream.Close();//关闭文件访问
        //    }
        //    #endregion

        //    HttpWebResponse response = (HttpWebResponse)request.GetResponse();
        //    using (Stream responseStream = response.GetResponseStream())
        //    {
        //        using (StreamReader myStreamReader = new StreamReader(responseStream, Encoding.GetEncoding(encoding)))
        //        {
        //            string retString = myStreamReader.ReadToEnd();
        //            return retString;
        //        }
        //    }
        //}
    }
}