using nms_sms;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class PaymentFailed : System.Web.UI.Page
{
    SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["cn"].ConnectionString);
    protected void Page_Load(object sender, EventArgs e)
    {
        try
        {

            string[] merc_hash_vars_seq;
            string merc_hash_string = string.Empty;
            string merc_hash = string.Empty;
            string order_id = string.Empty;
            string hash_seq = "key|txnid|amount|productinfo|firstname|email|udf1|udf2|udf3|udf4|udf5|udf6|udf7|udf8|udf9|udf10";

            
            if (Request.Form["status"] == "success")
            {

                merc_hash_vars_seq = hash_seq.Split('|');
                Array.Reverse(merc_hash_vars_seq);
                merc_hash_string = M_key.SALT + "|" + Request.Form["status"];


                foreach (string merc_hash_var in merc_hash_vars_seq)
                {
                    merc_hash_string += "|";
                    merc_hash_string = merc_hash_string + (Request.Form[merc_hash_var] != null ? Request.Form[merc_hash_var] : "");

                }
                merc_hash = Generatehash512(merc_hash_string).ToLower();

                string ss = Request.Form["hash"].ToString();

                if (merc_hash != Request.Form["hash"])
                {
                    //  Response.Write("Hash value did not matched");
                    Response.Redirect("pay.aspx");
                }
                else
                {


                    //order_id = Request.Form["txnid"];
                    insertdata(Request.Form["amount"], Request.Form["txnid"], Request.Form["status"], Request.Form["udf1"]);
                    //Response.Write("value matched");
                    Session["totalamount"] = null;
                    Session["studentids"] = null;
                    Response.Redirect("pay.aspx");
                    // Hash value did not matched
                }

            }

            else
            {

                if (Request.Form["status"] != "" || Request.Form["status"] != null)
                {

					if (Request.Form["productinfo"] == "Registration") {

                        insertdata(Request.Form["amount"], Request.Form["txnid"], Request.Form["status"], Request.Form["udf1"]);
                        payeename.InnerHtml = Request.Form["firstname"];
                        payeeamount.InnerHtml = "<b>Amount : </b>" + Request.Form["amount"];
                        PaymentReference.InnerHtml = "Reference Number " + Request.Form["txnid"];
                        paymentconfirm.InnerHtml = Request.Form["status"];
                        paymenterror.InnerHtml = Request.Form["error"];
                        //paymentid.InnerHtml = Request.Form["v"];
                        //string error = Request.Form["error"];
                        //string unmappedstatus = Request.Form["unmappedstatus"];
                        //string hash = Request.Form["hash"];
                        //string asa = Generatehash512(hash).ToLower();
                        //Response.Write("Hash value did not matched");
                        // osc_redirect(osc_href_link(FILENAME_CHECKOUT, 'payment' , 'SSL', null, null,true));
                    }

                    else {
                        
                        insertbatchdata(Request.Form["amount"], Request.Form["txnid"], Request.Form["status"], Request.Form["udf1"]);
                        payeename.InnerHtml = Request.Form["firstname"];
                        payeeamount.InnerHtml = "<b>Amount : </b>" + Request.Form["amount"];
                        PaymentReference.InnerHtml = "Reference Number " + Request.Form["txnid"];
                        paymentconfirm.InnerHtml = Request.Form["status"];
                        paymenterror.InnerHtml = Request.Form["error"];
                        //paymentid.InnerHtml = Request.Form["v"];
                        //string error = Request.Form["error"];
                        //string unmappedstatus = Request.Form["unmappedstatus"];
                        //string hash = Request.Form["hash"];
                        //string asa = Generatehash512(hash).ToLower();
                        //Response.Write("Hash value did not matched");
                        // osc_redirect(osc_href_link(FILENAME_CHECKOUT, 'payment' , 'SSL', null, null,true));
                    }
                }
                else
                {
                    Response.Redirect("Pay.aspx");
                }
            }
        }

        catch (Exception ex)
        {
            Response.Write("<span style='color:red'>" + ex.Message + "</span>");

        }
    }
    public string Generatehash512(string text)
    {

        byte[] message = Encoding.UTF8.GetBytes(text);

        UnicodeEncoding UE = new UnicodeEncoding();
        byte[] hashValue;
        SHA512Managed hashString = new SHA512Managed();
        string hex = "";
        hashValue = hashString.ComputeHash(message);
        foreach (byte x in hashValue)
        {
            hex += String.Format("{0:x2}", x);
        }
        return hex;

    }
    public string Generatehash512Revert(string text)
    {

        byte[] message = Encoding.UTF8.GetBytes(text);

        UnicodeEncoding UE = new UnicodeEncoding();
        byte[] hashValue;
        SHA512Managed hashString = new SHA512Managed();
        string hex = "";
        hashValue = hashString.ComputeHash(message);
        foreach (byte x in hashValue)
        {
            hex += String.Format("{0:x2}", x);
        }
        return hex;

    }
    public void insertdata(string amount, string referenceid, string status, string udf1)
    {
        SqlCommand cmd = new SqlCommand();
        cmd.Connection = con;
        if (con.State == ConnectionState.Closed)
            con.Open();

        cmd.Parameters.AddWithValue("@pdReferenceno", referenceid);
        cmd.Parameters.AddWithValue("@pdStatus", status);
        cmd.Parameters.AddWithValue("@pdRegid", udf1);
        cmd.Parameters.AddWithValue("@pdAmount", amount);
        cmd.CommandText = "ins_Payment";
        cmd.CommandType = CommandType.StoredProcedure;

        cmd.ExecuteNonQuery();
        cmd.Dispose();
        con.Close();

    }

    public void insertbatchdata(string amount, string referenceid, string status, string udf1)
    {
        SqlCommand cmd = new SqlCommand();
        cmd.Connection = con;
        if (con.State == ConnectionState.Closed)
            con.Open();

        cmd.Parameters.AddWithValue("@bpdReferenceno", referenceid);
        cmd.Parameters.AddWithValue("@bpdStatus", status);
        cmd.Parameters.AddWithValue("@bpdRegid", udf1);
        cmd.Parameters.AddWithValue("@bpdAmount", amount);
        cmd.CommandText = "ins_batchPayment";
        cmd.CommandType = CommandType.StoredProcedure;

        cmd.ExecuteNonQuery();
        cmd.Dispose();
        con.Close();

    }

}