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

namespace ICSSoft.Common
{
    public class HTTPHelper
    {
        private static log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);

        public static string HttpPost(string apiName, string url, string body)
        {
            try
            {
                //log.Debug(url + Environment.NewLine + body);
                Encoding encoding = Encoding.UTF8;
                System.Net.HttpWebRequest request = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(url);
                request.Method = "POST";
                request.Accept = "application/json, text/javascript, */*"; //"text/html, application/xhtml+xml, */*";
                request.ContentType = "application/json; charset=utf-8";
                // request.ContentType = "text/html, application/xhtml+xml";
                byte[] buffer = encoding.GetBytes(body);
                request.ContentLength = buffer.Length;
                request.GetRequestStream().Write(buffer, 0, buffer.Length);
                System.Net.HttpWebResponse response = (System.Net.HttpWebResponse)request.GetResponse();
                using (System.IO.StreamReader reader = new System.IO.StreamReader(response.GetResponseStream(), encoding))
                {
                    return reader.ReadToEnd();
                }
            }
            catch (System.Net.WebException ex)
            {
                log.Error(ex.ToString() + Environment.NewLine + url + Environment.NewLine + body);
                throw new Exception(apiName + "调用失败," + ex.Message);
            }
        }

        public static string RestFulGet(string jsonParam, string url)
        {
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
            Encoding encoding = Encoding.UTF8;
            request.Method = "GET";
            request.ContentType = "application/x-www-form-urlencoded";
            request.Credentials = CredentialCache.DefaultCredentials;

            request.Headers.Add("Content-Type", "application/json");
            request.Headers.Add("Accept", "application/json");
            request.Headers.Add("Authorization", "Basic TEST:12345678");

            byte[] buffer = encoding.GetBytes(jsonParam);
            request.ContentLength = buffer.Length;
            request.GetRequestStream().Write(buffer, 0, buffer.Length);

            string str = string.Empty;
            WebResponse response = null;
            try
            {
                response = request.GetResponse();
            }
            catch (WebException ex)
            {
                if (ex.Status == WebExceptionStatus.ProtocolError)
                    response = (WebResponse)ex.Response;
            }
            if (response != null)
            {
                using (StreamReader st = new StreamReader(response.GetResponseStream(), encoding))
                {
                    str = System.Web.HttpUtility.UrlDecode(st.ReadToEnd());
                }
            }
            return str;
        }
    }
}