using System;
using System.ComponentModel;
using System.Windows.Forms;
using System.Net;// need to added
using System.Threading; // need to added
using System.IO;// need to added

namespace WindowsFormsApp2
{



    public partial class FTP : Form
    {
        public string Username;
        public string Filename;
        public string Fullname;
        public string Server;
        public string Password;
        public string path;
        public string localdest;

        public FTP()
        {
            InitializeComponent();
            if (checkdown.Checked == true)
            {
                checkup.Enabled = false;
            }
         }


        private void label1_Click(object sender, EventArgs e){}

        private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {

            if (checkdown.Checked == true)
            {
                FtpWebRequest request = (FtpWebRequest)WebRequest.Create(new Uri(string.Format("{0}/{1}", Server, Filename)));

                request.Credentials = new NetworkCredential(Username, Password);
                request.Method = WebRequestMethods.Ftp.DownloadFile;  //Download Method


                //Get some data form the source file like the zise and the TimeStamp. every data you request need to be a different request and response
                FtpWebRequest request1 = (FtpWebRequest)WebRequest.Create(new Uri(string.Format("{0}/{1}", Server, Filename)));
                request1.Credentials = new NetworkCredential(Username, Password);
                request1.Method = WebRequestMethods.Ftp.GetFileSize;  //GetFileze Method
                FtpWebResponse response = (FtpWebResponse)request1.GetResponse();
                double total = response.ContentLength;
                response.Close();

                FtpWebRequest request2 = (FtpWebRequest)WebRequest.Create(new Uri(string.Format("{0}/{1}", Server, Filename)));
                request2.Credentials = new NetworkCredential(Username, Password);
                request2.Method = WebRequestMethods.Ftp.GetDateTimestamp; //GetTimestamp Method
                FtpWebResponse response2 = (FtpWebResponse)request2.GetResponse();
                DateTime modify = response2.LastModified;
                response2.Close();


                Stream ftpstream = request.GetResponse().GetResponseStream();
                FileStream fs = new FileStream(localdest, FileMode.Create);

                // Method to calculate and show the progress.
                byte[] buffer = new byte[1024];
                int byteRead = 0;
                double read = 0;
                do
                {
                    byteRead = ftpstream.Read(buffer, 0, 1024);
                    fs.Write(buffer, 0, byteRead);
                    read += (double)byteRead;
                    double percentage = read / total * 100;
                    backgroundWorker1.ReportProgress((int)percentage);
                }
                while (byteRead != 0);
                ftpstream.Close();
                fs.Close();


            }
            else {

                //Upload Method.
                FtpWebRequest request = (FtpWebRequest)WebRequest.Create(new Uri(string.Format("{0}/{1}", Server, Filename)));
                request.Method = WebRequestMethods.Ftp.UploadFile;
                request.Credentials = new NetworkCredential(Username, Password);
                Stream ftpstream = request.GetRequestStream();
                FileStream fs = File.OpenRead(Fullname);

                // Method to calculate and show the progress.
                byte[] buffer = new byte[1024];
                double total = (double)fs.Length;
                int byteRead = 0;
                double read = 0;
                do
                {
                        byteRead = fs.Read(buffer, 0, 1024);
                        ftpstream.Write(buffer, 0, byteRead);
                        read += (double)byteRead;
                        double percentage = read / total * 100;
                        backgroundWorker1.ReportProgress((int)percentage);
                }
                while (byteRead != 0);
                fs.Close();
                ftpstream.Close();

            }
        }

        //Background
        private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
        {

            if (checkdown.Checked == true)
            {
                label4.Text = $"Downloaded {e.ProgressPercentage}%";
                label4.Update();
                progressBar1.Value = e.ProgressPercentage;
                progressBar1.Update();
            }

            if (checkup.Checked == true)
            {
                label4.Text = $"Uploaded {e.ProgressPercentage}%";
                label4.Update();
                progressBar1.Value = e.ProgressPercentage;
                progressBar1.Update();
            }
        }

        private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            if (checkdown.Checked == true)
            {
                label4.Text = "Download Complete!";
                MessageBox.Show("Download Complete!");
            }

            if (checkup.Checked == true)
            {
                label4.Text = "Upload Complete!";
                MessageBox.Show("Upload Complete!");
            }

        }

        private void Button1_Click(object sender, EventArgs e)
        {
            if (checkup.Checked == true)
            {

                using (OpenFileDialog ofd = new OpenFileDialog() { Multiselect = true, ValidateNames = true, Filter = "All Files|*.*" })
                {
                    if (ofd.ShowDialog() == DialogResult.OK)
                    {
                        FileInfo fi = new FileInfo(ofd.FileName);
                        Username = textBox1.Text;
                        Password = textBox2.Text;
                        Server = textBox3.Text;
                        Filename = fi.Name;
                        Fullname = fi.FullName;
                    }
                }
            }


            if (checkdown.Checked == true)
            {
                Username = textBox1.Text;
                Password = textBox2.Text;
                Server = textBox3.Text;
                Filename = textBox4.Text;
                path = @"C:\Users\jredondo\Documents\";
                localdest = path + @"" + Filename;
                Fullname = Server + @"/" + Filename;
            }

            //Start the Background and wait a little to start it.
            Thread.Sleep(1000);
            backgroundWorker1.RunWorkerAsync();  //the most important command to start the background worker
            Thread.Sleep(1000);
        }

            private void textBox1_TextChanged(object sender, EventArgs e)
        {

        }

        private void button2_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }

        private void checkBox1_CheckedChanged(object sender, EventArgs e)
        {
            if (checkdown.Checked == false)
            {
                checkup.Enabled = true;
                checkup.Checked = true;
                button1.Text = @"Upload";
                label5.Enabled = false;
                textBox4.Enabled = false;
                checkdown.Enabled = false;
                label4.Text = @"Uploaded 0%";
            }

        }

       private void checkup_CheckedChanged(object sender, EventArgs e)
        {
            if (checkup.Checked == false)
            {
                checkdown.Enabled = true;
                checkdown.Checked = true;
                button1.Text = @"Download";
                label5.Enabled = true;
                textBox4.Enabled = true;
                checkup.Enabled = false;
                label4.Text = @"Downloaded 0%";
            }

        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void textBox3_TextChanged(object sender, EventArgs e)
        {

        }

    }
}