using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.Script.Serialization;
using System.Text;
namespace Mtxfw.shop
{
    public partial class wxpay : System.Web.UI.Page
    {
        protected string wx_packageValue = "";
        public Mtxfw.Utility.Config config = new Mtxfw.Utility.Config("");
        public Mtxfw.DAL.user_info daoUser = new Mtxfw.DAL.user_info();
        public string appKey = "", IFApp = "0", strBillNo="";
        private string appSecret = "";
        
        Mtxfw.DAL.user_Results daoResults = new Mtxfw.DAL.user_Results();
        protected void Page_Load(object sender, EventArgs e)
        {
            string str_u = Request.ServerVariables["HTTP_USER_AGENT"].Trim().ToLower();
            if (str_u.IndexOf("micromessenger") != -1)
            {
                IFApp = "1";
            }
            string hostname = Request.Url.Host;
            
            if (!IsPostBack)
            {

                try
                {
                    string strWeixin_OpenID = "";
                   

                    if (!String.IsNullOrEmpty(Request.QueryString["PayID"]))
                    {
                        strBillNo = Request.QueryString["PayID"].ToString();

                        Mtxfw.Model.user_Results ReModel = daoResults.GetModel2(2, strBillNo);
                        if (ReModel != null)
                        {
                            paybill.Text = ReModel.Totalmoney.ToString("f2");
                            if (ReModel.Seef == 0)
                            {
                                if (IFApp == "1")
                                {
                                    appKey = config.webappKey;
                                    appSecret = config.webappSecret;


                                    if (Session["gzptaccess_token"] == null)
                                    {
                                        if (Request.QueryString["code"] != null)
                                        {

                                            string code = Request.QueryString["code"].ToString();
                                            WXaccess_token ac = getgzptaccess_token(code, appKey, appSecret);
                                            strWeixin_OpenID = ac.openid;

                                        }
                                        else
                                        {
                                            //Response.Redirect(Mtxfw.Utility.Interface_WxPay.OAuth2_GetUrl_Pay(Request.RawUrl.ToString(), 1));
                                            Getcode(config.webUrl + Request.RawUrl.ToString(), appKey);
                                        }
                                    }
                                    else
                                    {
                                        string[] atoken = Session["gzptaccess_token"].ToString().Split('|');
                                        if (atoken.Length > 2)
                                        {
                                            bool b = true;
                                            if (atoken[2] != "")
                                            {
                                                DateTime dt = Convert.ToDateTime(atoken[2]);
                                                DateTime dt1 = DateTime.Now;
                                                DateTime dt2 = dt.AddSeconds(7000);
                                                if (DateTime.Compare(dt2, dt1) < 0)
                                                {
                                                    b = false;

                                                }
                                            }
                                            if (b)
                                            {
                                                WXaccess_token ac = new WXaccess_token();
                                                ac.access_token = atoken[0];
                                                ac.openid = atoken[1];
                                                strWeixin_OpenID = ac.openid;
                                            }
                                            else
                                            {
                                                if (Request.QueryString["code"] != null)
                                                {

                                                    string code = Request.QueryString["code"].ToString();
                                                    WXaccess_token ac = getgzptaccess_token(code, appKey, appSecret);
                                                    strWeixin_OpenID = ac.openid;
                                                    string strWeixin_Token = ac.access_token;

                                                }
                                                else
                                                {
                                                    Getcode(config.webUrl + Request.RawUrl.ToString(), appKey);
                                                }
                                            }
                                        }
                                    }
                                    string _Pay_Package = Mtxfw.Utility.Interface_WxPay.Get_RequestHtml(config, HttpContext.Current, strWeixin_OpenID, strBillNo, Convert.ToDecimal(ReModel.Totalmoney), ReModel.conent, "Card_Store");

                                    Mtxfw.Utility.Common.WriteHtml("/weixin/weixin.xml", _Pay_Package + "|OpenID=" + strWeixin_OpenID);
                                    //微信jspai支付
                                    if (_Pay_Package.Length > 0)
                                    {
                                        wx_packageValue = _Pay_Package;
                                    }
                                }
                                else
                                {
                                    string PageUrl = Mtxfw.Utility.Interface_WxPay.Get_RequestHtml5(config, HttpContext.Current, strBillNo, Convert.ToDecimal(ReModel.Totalmoney), ReModel.conent, "Card_Store");
                                    Response.Redirect(PageUrl);
                                    ;
                                }
                            }
                        }
                    }
                }
                catch (Exception err)
                {
                    Mtxfw.Utility.Common.WriteHtml("/weixin/weixin0.txt", err.ToString());
                }
            }
        }

      
       
        /// <summary>
        /// 获取未授权的临时令牌
        /// </summary>
        private void Getcode(string strurl, string appID)
        {
            string url = "https://open.weixin.qq.com/connect/oauth2/authorize";
            string[] parameters ={
                "appid="+appID,
                "redirect_uri=" + UrlEncode(strurl),
                "response_type=code",
                "scope=snsapi_userinfo",
                "#wechat_redirect"
                
            };
            string tempParameters = string.Empty;
            for (int i = 0; i < parameters.Length; i++)
            {
                if (i != parameters.Length - 1)
                {
                    tempParameters += parameters[i] + "&";
                }
                else
                {
                    tempParameters += parameters[i] + "";
                }
            }
            url = url + "?" + tempParameters + "";
            Response.Redirect(url);
            //ClientScript.RegisterStartupScript(this.GetType(), "", "<script type='text/javascript'>top.location='" + url + "';</script>");
        }
        /// <summary>
        /// url编码
        /// </summary>
        /// <param name="value">The value to Url encode</param>
        /// <returns>Returns a Url encoded string</returns>
        private string UrlEncode(string value)
        {
            string unreservedChars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_.~";
            StringBuilder result = new StringBuilder();
            foreach (char symbol in value)
            {
                if (unreservedChars.IndexOf(symbol) != -1)
                {
                    result.Append(symbol);
                }
                else
                {
                    result.Append('%' + String.Format("{0:X2}", (int)symbol));
                }
            }
            return result.ToString();
        }
        public object FromJson2(string json)
        {
            JavaScriptSerializer js = new JavaScriptSerializer();
            return js.Deserialize<WXaccess_token>(json);
        }
        public WXaccess_token getgzptaccess_token(string code, string appID, string appSecret)
        {
             WXaccess_token ac = null;
            string[] Aaccess = new string[2];
            string straccess_token = "";
            if (Session["gzptaccess_token"] == null)
            {
                string str = Mtxfw.Utility.Common.getPage2("https://api.weixin.qq.com/sns/oauth2/access_token?appid=" + appID + "&secret=" + appSecret + "&code=" + code + "&grant_type=authorization_code", "", "utf-8");
                if (str.IndexOf("openid") != -1)
                {
                    ac = (WXaccess_token)FromJson2(str);
                    Session["gzptaccess_token"] = ac.access_token + "|" + ac.openid + "|" + DateTime.Now;
                }
                else
                {
                    Response.Redirect("/?Error=appid|" + appID + "|secret" + appSecret + "|code" + code + "");
                }
            }
            else
            {
                string[] atoken = Session["gzptaccess_token"].ToString().Split('|');
                if (atoken.Length > 2)
                {
                    bool b = true;
                    if (atoken[2] != "")
                    {
                        DateTime dt = Convert.ToDateTime(atoken[2]);
                        DateTime dt1 = DateTime.Now;
                        DateTime dt2 = dt.AddSeconds(7000);
                        if (DateTime.Compare(dt2, dt1) < 0)
                        {
                            b = false;

                        }
                    }
                    if (b)
                    {
                        straccess_token = atoken[0];
                        ac = new WXaccess_token();
                        ac.access_token = atoken[0];
                        ac.openid = atoken[1];
                    }
                    else
                    {
                        string str = Mtxfw.Utility.Common.getPage2("https://api.weixin.qq.com/sns/oauth2/access_token?appid=" + appID + "&secret=" + appSecret + "&code=" + code + "&grant_type=authorization_code", "", "utf-8");
                        if (str.IndexOf("openid") != -1)
                        {
                            ac = (WXaccess_token)FromJson2(str);
                            Session["gzptaccess_token"] = ac.access_token + "|" + ac.openid + "|" + DateTime.Now;
                        }
                        else
                        {
                            Response.Redirect("/?Error=openid" + str);
                        }
                    }
                }
                else
                {
                    Response.Redirect("/?Error=atoken" + atoken.Length);
                }
            }
            return ac;
        }
    }
}