using System;
using System.ComponentModel;
using System.Text;
using System.Windows.Forms;
using System.Threading;
using System.Net.Sockets;
using System.Net;

namespace lab4
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void computeButton_Click(object sender, EventArgs e)
        {
            int fig;
            try
            {
                fig = Int32.Parse(intTextBox1.Text);
            }
            catch (Exception)
            {
                MessageBox.Show("Wpisz jakąś liczbę!", "Błąd!", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                return;
            }
            backgroundWorker1.RunWorkerAsync(fig);
            computeButton.Enabled = false;
            intTextBox1.Enabled = false;
        }

        private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
        {
            progressBar1.Value = e.ProgressPercentage;
            resultTextBox.Text = ((long)(e.UserState)).ToString();
        }

        private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            BackgroundWorker worker =  sender as BackgroundWorker;
            e.Result = fibonacci((int)e.Argument, worker);
        }

        private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            resultTextBox.Text = e.Result.ToString();
            computeButton.Enabled = true;
            intTextBox1.Enabled = true;

            try
            {
                TcpClient client = new TcpClient();
                //IPEndPoint serverEndPoint = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 3000);
                client.Connect(IPAddress.Parse("127.0.0.1"), 3000);
                NetworkStream clientStream = client.GetStream();
                ASCIIEncoding encoder = new ASCIIEncoding();
                byte[] buffer = encoder.GetBytes(e.Result.ToString());
                clientStream.Write(buffer, 0, buffer.Length);
                clientStream.Flush();
            }
            catch (Exception)
            {
                MessageBox.Show("Nie ma servera :(", "Błąd!", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
            }
        }

        public long fibonacci(int n, BackgroundWorker worker)
        {
            long result = 1;
            long prev = 0;
            if (n == 0)
                result = 0;
            else if(n > 1)
            {
                long temp;
                for (int i = 2; i <= n; i++)
                {
                    temp = result;
                    result += prev;
                    prev = temp;
                    int percent = (int)((float)i/(float)n*100.0);
                    worker.ReportProgress(percent, result);
                    Thread.Sleep(200);
                }
            }
            return result;
        }
    }
}