using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Web.Script.Serialization;
using System.Windows.Forms;
using System.Threading;

namespace WindowsFormsApp1
{
    public partial class Form1 : Form
    {

        private static ManualResetEvent allDone = new ManualResetEvent(false);
        static byte[] byteArray = null;
        static string transactioninfo = string.Empty;

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

            Transaction t = new Transaction();
            t.branch = "PagoEnLinea";
            t.description = "Test";
            t.entity = "GBCSAprovechamiento";
            t.purchaseid = DateTime.Now.ToString("ddMMyyyyHHmmss");
            t.total = "112345";
            t.version = "2";

            // Ejemplo IOnicial String res=Pagar(t);
            String res = Llamar_Pagar(t);

        }

        public class Transaction
        {
            public string purchaseid { get; set; }
            public string total { get; set; }
            public string version { get; set; }
            public string entity { get; set; }
            public string branch { get; set; }
            public string description { get; set; }

            public Transaction()
            {
                purchaseid = "";
                total = "";
                version = "";
                entity = "";
                branch = "";
                description = "";
            }
        }

        public class nResponse
        {
            public int error { get; set; }
            public string errorDesc { get; set; }
            public string timeIni { get; set; }
            public DateTime _tIni { get; set; }
            public string timeEnd { get; set; }
            public DateTime _tEnd { get; set; }
            public string nData { get; set; }

            public nResponse()
            {
                error = 0;
                errorDesc = "";
                timeIni = DateTime.Now.ToString("dd-MM-yyyy HH:mm:ss");
                timeEnd = DateTime.Now.ToString("dd-MM-yyyy HH:mm:ss");
                nData = "";
            }
        }

        public string Llamar_Pagar(Transaction obj)
        {
            string strRegresa = string.Empty;

            // Declaración de Variables
            string respuesta = "";
            string url = "https://pcservicebsd.azurewebsites.net/frm/pago";
            string username = "CompraC&A";
            string password = "FgtyuO98Dca!=";


                //Preparacion de Datos a Enviar.
                JavaScriptSerializer jsSerializer = new JavaScriptSerializer();
            string datos = String.Concat("transactioninfo:", jsSerializer.Serialize(obj));
            transactioninfo = datos;
            byteArray = Encoding.UTF8.GetBytes(transactioninfo);

            //Preparacion de Encabezado de solicitud
            CredentialCache mycache = new CredentialCache();
            mycache.Add(new Uri(url), "Basic", new NetworkCredential(username, password));

            //Preparacion de Acceso a Servicio de Pago
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
            request.UserAgent = "Apache-HttpClient/4.2.1";
            request.Accept = "text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2";
            //1 request.Headers.Add("Signature", CanonicalReq);
            request.Headers.Add("SignedHeaders", "host");
            request.ProtocolVersion = HttpVersion.Version11;
            //0 request.Credentials = mycache;
            request.Headers.Add("Authorization", "Basic Q29tcHJhQyZBOkZndHl1Tzk4RGNhIT0="); // "Basic " + Convert.ToBase64String(new ASCIIEncoding().GetBytes(username + ":" + password)));
            request.ContentType = "application/x-www-form-urlencoded";
            request.Method = "POST";
            //0 request.ContentLength = transactioninfo.Length;

            //HttpWebResponse response = (HttpWebResponse)request.GetResponse();

            request.BeginGetRequestStream(new AsyncCallback(GetRequestStreamCallback), request);

            allDone.WaitOne();

            return strRegresa;
        }

        private static void GetRequestStreamCallback(IAsyncResult asynchronousResult)
        {
            HttpWebRequest request = (HttpWebRequest)asynchronousResult.AsyncState;

            // End the operation
            Stream postStream = request.EndGetRequestStream(asynchronousResult);
            /*
            Console.WriteLine("Please enter the input data to be posted:");
            string postData = Console.ReadLine();

            // Convert the string into a byte array.
            byte[] byteArray = Encoding.UTF8.GetBytes(postData);

            // Write to the request stream.
            postStream.Write(byteArray, 0, postData.Length);
    */
            postStream.Write(byteArray, 0, transactioninfo.Length);
            postStream.Close();

            // Start the asynchronous operation to get the response
            request.BeginGetResponse(new AsyncCallback(GetResponseCallback), request);
        }

        private static void GetResponseCallback(IAsyncResult asynchronousResult)
        {
            HttpWebRequest request = (HttpWebRequest)asynchronousResult.AsyncState;

            // End the operation
            HttpWebResponse response = (HttpWebResponse)request.EndGetResponse(asynchronousResult);
            Stream streamResponse = response.GetResponseStream();
            StreamReader streamRead = new StreamReader(streamResponse);
            string responseString = streamRead.ReadToEnd();
            Console.WriteLine(responseString);
            // Close the stream object
            streamResponse.Close();
            streamRead.Close();

            // Release the HttpWebResponse
            response.Close();
            allDone.Set();
        }

        public string Pagar(Transaction obj)
        {
            JavaScriptSerializer jsSerializer = new JavaScriptSerializer();
            string respuesta = "";
            string url = "https://pcservicebsd.azurewebsites.net/frm/pago";
            //url = "http://localhost:64987/frm/pago";
            string username = "CompraC&A";
            string password = "FgtyuO98Dca!=";

            CredentialCache mycache = new CredentialCache();

            try
            {

                string datos = String.Concat("transactioninfo:", jsSerializer.Serialize(obj));
                mycache.Add(new Uri(url), "Basic", new NetworkCredential(username, password));
                WebRequest request = WebRequest.Create(url);

                request.Credentials = mycache;
                request.Headers.Add("Authorization", "Basic " + Convert.ToBase64String(new ASCIIEncoding().GetBytes(username + ":" + password)));
                request.Method = "POST";
                string transactioninfo = datos;
                byte[] byteArray = Encoding.UTF8.GetBytes(transactioninfo);
                request.ContentType = "application/x-www-form-urlencoded";
                request.ContentLength = byteArray.Length;
                Stream dataStream = request.GetRequestStream();
                dataStream.Write(byteArray, 0, byteArray.Length);
                dataStream.Close();
                WebResponse response = request.GetResponse();
                Console.WriteLine(((HttpWebResponse)response).StatusDescription);
                using (dataStream = response.GetResponseStream())
                {
                    StreamReader reader = new StreamReader(dataStream);
                    respuesta = reader.ReadToEnd();
                }

                nResponse respuestaT = jsSerializer.Deserialize<nResponse>(respuesta);
                response.Close();
                //
            }
            catch (Exception msgError)
            {
                respuesta = msgError.Message;
            }

            return respuesta;
        }

    }
}