using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using DSWeb.Areas.Mobile.DAL;
using System.Web.Security;

namespace DSWeb.Areas.Mobile.Views.WeChatHandler
{
    public partial class Index : System.Web.Mvc.ViewPage
    {
        /// <summary>
        /// 微信服务器开发验证类
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void Page_Load ( object sender, EventArgs e )
        {
            Response.Write(Valid());
            Response.End();
            DBLog.Log(Request.RequestContext.ToString());

        }
        private string Valid ( )
        {
            string rtnStr = "";
            string echoStr = Request.QueryString["echoStr"].ToString();
            DBLog.Log("Valid1");
            if (CheckSignature())
            {
                DBLog.Log("Valid2");
                if (!string.IsNullOrEmpty(echoStr))
                {
                    DBLog.Log("Valid3");
                    rtnStr = echoStr;
                    DBLog.Log("echoStr-" + echoStr);

                }
            }
            DBLog.Log("Valid4");
            return rtnStr;
        }
        private bool CheckSignature ( )
        {
            DBLog.Log("CheckSignature-1");
            string signature = Request.QueryString["signature"].ToString();
            string timestamp = Request.QueryString["timestamp"].ToString();
            string nonce = Request.QueryString["nonce"].ToString();
            string[] ArrTmp = { "Token", timestamp, nonce };
            Array.Sort(ArrTmp);     //字典排序  
            string tmpStr = string.Join("", ArrTmp);
            tmpStr = FormsAuthentication.HashPasswordForStoringInConfigFile(tmpStr, "SHA1");
            DBLog.Log("CheckSignature-2");
            tmpStr = tmpStr.ToLower();
            if (tmpStr == signature)
            {
                DBLog.Log("CheckSignature-3");
                return true;
            }
            else
            {
                DBLog.Log("CheckSignature-4");
                return false;
            }
        } 
    }
}