using System;
using System.Collections.Generic;
using System.Text;
using System.Net;

namespace Stone.Common
{
    public class MyHttpClient : WebClient
    {
        // Cookie 容器
        private CookieContainer cookieContainer;

        /**/
        /// <summary>
        /// 创建一个新的 WebClient 实例。
        /// </summary>
        public MyHttpClient()
        {
            this.cookieContainer = new CookieContainer();
        }

        /**/
        /// <summary>
        /// 创建一个新的 WebClient 实例。
        /// </summary>
        /// <param name="cookie">Cookie 容器</param>
        public MyHttpClient(CookieContainer cookies)
        {
            this.cookieContainer = cookies;
        }

        /**/
        /// <summary>
        /// Cookie 容器
        /// </summary>
        public CookieContainer Cookies
        {
            get { return this.cookieContainer; }
            set { this.cookieContainer = value; }
        }

        /**/
        /// <summary>
        /// 返回带有 Cookie 的 HttpWebRequest。
        /// </summary>
        /// <param name="address"></param>
        /// <returns></returns>
        protected override WebRequest GetWebRequest(Uri address)
        {
            WebRequest request = base.GetWebRequest(address);
            if (request is HttpWebRequest)
            {
                HttpWebRequest httpRequest = request as HttpWebRequest;
                httpRequest.CookieContainer = cookieContainer;
            }
            return request;
        }

        public string PostData(string uriString, string postString)
        {
            string result = "";
            try
            {
                this.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
                byte[] postData = Encoding.Default.GetBytes(postString);
                byte[] responseData = this.UploadData(uriString, "POST", postData);
                result = Encoding.Default.GetString(responseData);

            }
            catch (Exception ex)
            {
                result = ex.Message;
            }

            return result;
        }

        public string GetData(string url)
        {
            string result = "";
            try
            {
                result = System.Text.Encoding.Default.GetString(this.DownloadData(url));
            }
            catch (Exception ex)
            {
                result = ex.Message;
            }

            return result;
        }
    }
}