using IPScanner;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Networking.Pages
{
    public partial class WF_IPScanner : UserControl
    {
        NetworkScanner scanner = new NetworkScanner();
        Timer timer = new Timer();
        List<IPScanResult> results;
        public WF_IPScanner()
        {
            InitializeComponent();
            List<Tuple<IPAddress, IPAddress>> ipRanges = IPRanges.GetOperationalIPRanges();
            if (ipRanges.Count > 0)
            {
                //tbIPRange.Text = ipRanges[0].Item1.GetAddressBytes().ToString();
                tbIPRange.Text = IPtoString(ipRanges[0].Item1.GetAddressBytes()) + "-" + ipRanges[0].Item2.GetAddressBytes()[3].ToString();
                // ipTo.IPAddress = ipRanges[0].Item2;
            }
        }

        string IPtoString(byte[] array)
        {
            //
            // Concatenate all the elements into a StringBuilder.
            //
            StringBuilder strinbuilder = new StringBuilder();
            for (int i = 0; i < array.Count(); i++)
            {

                strinbuilder.Append(array[i]);
                if (i != array.Count() - 1)
                    strinbuilder.Append('.');
            }
            return strinbuilder.ToString();
        }

        private string GetPingTime(IPScanResult result)
        {
            if (result.ping > -1)
                return result.ping + " ms";
            return "N/A";
        }

        private void PopulateListView()
        {
            bool itemModified = false;
            for (int i = 0; i < results.Count; i++)
            {
                IPScanResult result = results[i];
                if (result.status == ScanStatus.Complete || result.status == ScanStatus.Partial)
                {
                    string ip = result.ip.ToString();
                    ListViewItem[] matchedItems = lvIPList.Items.Find(ip, false);
                    if (matchedItems.Length > 0)
                    {
                        matchedItems[0].Tag = result.response;
                        matchedItems[0].SubItems[0].Text = result.ip.ToString();
                        matchedItems[0].SubItems[1].Text = GetPingTime(result);
                        matchedItems[0].SubItems[2].Text = result.host;
                        matchedItems[0].SubItems[3].Text = result.identification;
                    }
                    else
                    {
                        ListViewItem lvi = new ListViewItem(new string[] { result.ip.ToString(), GetPingTime(result), result.host, result.identification });
                        lvi.Name = ip;
                        lvIPList.Items.Add(lvi);
                    }
                    itemModified = true;
                }
            }
        }




        void timer_Tick(object sender, EventArgs e)
        {
            PopulateListView();
        }

        private void btnScan_Click(object sender, EventArgs e)
        {
            timer.Stop();
            lvIPList.Items.Clear();

            IPAddress ipFrom = IPAddress.Parse(tbIPRange.Text.Split(new Char[] { '-' })[0]);

            IPAddress ipTo = IPAddress.Parse(ipFrom.GetAddressBytes()[0] + "." +
                                                ipFrom.GetAddressBytes()[1] + "." +
                                                ipFrom.GetAddressBytes()[2] + "." +
                                                (tbIPRange.Text.Contains("-") ? byte.Parse(tbIPRange.Text.Split(new Char[] { '-' })[1].ToString()) : ipFrom.GetAddressBytes()[3]));

            results = scanner.BeginScan(ipFrom, ipTo);
            timer.Interval = 1000;
            timer.Tick += timer_Tick;
            timer.Start();
        }
    }
}