using System.Net;
using System.Text;

namespace Gatedge.ScanCode.Common
{
    /// <summary>
    /// http提交客户端
    /// </summary>
    public class HttpClients
    {
        /// <summary>
        /// Seivice URL
        /// </summary>
        public string Url { get; set; }
        /// <summary>
        /// 内容
        /// </summary>
        public string Content { get; set; }
        /// <summary>
        /// Cookie，保证登录后，所有访问持有一个Cookie；
        /// </summary>
        static CookieContainer Cookie = new CookieContainer();

        /// <summary>
        /// HTTP访问
        /// </summary>
        public string Post()
        {
            HttpWebRequest httpRequest = HttpWebRequest.Create(Url) as HttpWebRequest;
            httpRequest.Method = "POST";
            httpRequest.ContentType = "application/json";
            httpRequest.CookieContainer = Cookie;
            httpRequest.Timeout = 1000 * 60; //1min

            using (Stream reqStream = httpRequest.GetRequestStream())
            {

                string sContent = string.Empty;
                var bytes = UnicodeEncoding.UTF8.GetBytes(sContent);
                reqStream.Write(bytes, 0, bytes.Length);
                reqStream.Flush();
            }
            using (var repStream = httpRequest.GetResponse().GetResponseStream())
            {
                using (var reader = new StreamReader(repStream))
                {
                    return ValidateResult(reader.ReadToEnd());
                }
            }
        }
        private static string ValidateResult(string responseText)
        {
            if (responseText.StartsWith("response_error:"))
            {
                return responseText.TrimStart("response_error:".ToCharArray());
            }
            return responseText;
        }
    }
}