using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using NetCalc;
using PTConverter.Plugin;

namespace Networking
{
    /// <summary>
    /// Interaktionslogik für Networking.xaml
    /// </summary>
    public partial class Networking_IPv4 : UserControl, IPlugin, IPage
    {
        #region Declarations
        protected IPTool ip = null;
        protected bool fill = false; // lock events wenn updating
        protected bool isIP = false;

        public string Author => "Kevin Krüger";

        public string Company => "PeaceToke";

        public string PluginName => "Networking";

        public string Description => "Calculate networks very easy!";

        public string Version => "1.0.0";

        public string IconLink => "https://external-content.duckduckgo.com/iu/?u=https%3A%2F%2Fwww.clipartmax.com%2Fpng%2Fmiddle%2F276-2769230_networking-deep-neural-network-icon.png&f=1&nofb=1";

        public IPage Page => this;
        #endregion

        public Networking_IPv4()
        {
            InitializeComponent();


            tbNETClass.ItemsSource = new object[] {
                                                                  "Class A: 0.0.0.0-127.255.255.255",
                                                                  "Class B: 128.0.0.0-191.255.255.255",
                                                                  "Class C: 192.0.0.0-223.255.255.255",
                                                                  "Class D: 224.0.0.0-239.255.255.255",
                                                                  "Class E: 240.0.0.0-254.255.255.255"};

            tbNETClass.SelectedIndex = 0;
        }
        public string GetCategory() => "Networking";
        public string GetUnderCategory() => "IPv4";
        public UserControl GetPage() => new Networking_IPv4();

        #region Methods Used
        protected void newIP()
        {
            try
            {
                ip = new IPTool(tbIPAddress.Text);
                fillIPCalc();
            }
            catch (Exception e)
            {
                MessageBox.Show(e.StackTrace);
            }
            //catch (UnknownHostException e) 
            //{
            //	main.getJp_Calc().getJtf_IP_Calc().setBackground(java.awt.Color.red);
            //}
        }

        protected void fillIPCalc()
        {
            if (ip == null || ip.getIp() == null) return;
            this.fill = true;

            this.fillComboBox_Prefix();
            this.fillComboBox_NetworkMask();

            // Prefix
            int prefix = ip.getNetworkPrefix();
            if (prefix >= 8 && prefix <= 30)
            {
                if (prefix != ip.getNetworkClassPrefix() && !ip.isFirstSubNetBit()) prefix--;
                prefix = prefix - ip.getNetworkClassPrefix();
            }
            else prefix = -1;
            prefixComboBox.SelectedIndex = prefix;
            // NetMask
            netMaskComboBox.SelectedIndex = prefix;

            // folgendes nur wenn Netzwerkmaske vorhanden
            // nicht der Fall bei Class-D oder E
            if (prefix != -1)
            {
                // max Net Hosts
                maxCountHosts.Text = ip.getMaxNetworkHosts() + "";
                // Net Class    
                calcNetwork.Text = ip.getNetworkClassName();
                // Broadcast
                calcBroadcast.Text = ip.getBroadCast();
                //	Network
                calcNetwork.Text = ip.getNetwork();
                //	Net-Class
                tbNETClass.SelectedIndex = ip.getNetworkClass();
                // IP-Range
                string[] ipRange = ip.getNetworkIPRange();
                calcIPRange.Text = ipRange[0] + " - " + ipRange[1];
                // max Sub-Nets
                clacMaxNetCount.Text = ip.getMaxSubNets() + "";
            }
            else // Anzeige löschen
            {
                // max Net Hosts
                maxCountHosts.Text = "";
                // Net Class    
                calcNetwork.Text = "";
                // Broadcast
                calcBroadcast.Text = "";
                //	Network
                calcNetwork.Text = "";
                // IP-Range
                calcIPRange.Text = "";
                // max Sub-Nets
                clacMaxNetCount.Text = "";
            }
            // Description
            string desc = "";
            if (ip.get1Byte() >= (byte)64 && ip.getNetworkClass() == (byte)0)   // 64. 
                desc = "reserved for future use";
            if (ip.get1Byte() == (byte)127) // localhost 
                desc = "localhost and loopback-Device - your one computer";
            if (ip.get1Byte() == (byte)10)  // private 10.0.0.0
                desc = "private net - for internal use only, would not be routed in internet";
            if (ip.get1Byte() == (byte)192 && ip.get2Byte() == (byte)168)  // private 192. - 168. 
                desc = "private net - for internal use only, would not be routed in internet";
            if (ip.get1Byte() == (byte)172 && (ip.get2Byte() >= (byte)16 && ip.get2Byte() <= (byte)31))     //private 172.16 - 172.31 
                desc = "private net - for internal use only, would not be routed in internet";
            if ((ip.get1Byte() == (byte)169) && (ip.get2Byte() == (byte)254))       // 169.254. 
                desc = "APIPA Automatic Private IP Addressing";
            if (ip.get1Byte() == (byte)0)   // 0.
                desc = "0.0.0.0 = default route";
            if (ip.getNetworkClass() == (byte)4) // Class-E 
                desc = "reserved for future use";
            if (ip.getNetworkClass() == (byte)3) // Class-D 
                desc = "used for multicast";

            noticeLabel.Content = "Info stuff: " + desc;
            this.fill = false;
        }

        protected void fillComboBox_Prefix()
        {
            if (ip == null || ip.getIp() == null) return;

            prefixComboBox.Items.Clear();

            if (ip.getNetworkClassPrefix() == -1)
            {
                prefixComboBox.Items.Add("");
                return;
            }

            int startPrefix = ip.getNetworkClassPrefix();
            // first is Networkclass
            prefixComboBox.Items.Add(startPrefix + "");
            startPrefix++;
            if (!ip.isFirstSubNetBit()) startPrefix++;

            for (int i = startPrefix; i <= 30; i++)
                prefixComboBox.Items.Add(i + "");
        }
        protected void fillComboBox_NetworkMask()
        {
            if (ip == null || ip.getIp() == null) return;

            netMaskComboBox.Items.Clear();

            if (ip.getNetworkClassPrefix() == -1)
            {
                netMaskComboBox.Items.Add("");
                return;
            }

            int startPrefix = ip.getNetworkClassPrefix();
            // first is Networkclass
            netMaskComboBox.Items.Add(ip.getNetworkMaskByPrefix(startPrefix));
            startPrefix++;
            if (!ip.isFirstSubNetBit()) startPrefix++;

            for (int i = startPrefix; i <= 30; i++)
                netMaskComboBox.Items.Add(ip.getNetworkMaskByPrefix(i));
        }
        #endregion

        #region Events
        private void ipAddress_Leave(object sender, System.EventArgs e)
        {
            newIP();
        }

        private void ipAddress_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.Key == Key.Enter)
            {
                newIP();
            }
        }

        private void prefixComboBox_SelectedIndexChanged(object sender, System.EventArgs e)
        {
            if (ip == null || ip.getIp() == null || fill) return;
            if (ip.getNetworkClassPrefix() == -1) return;

            int prefix = Int32.Parse((string)prefixComboBox.SelectedItem);
            ip.setNetworkPrefix(prefix);

            fillIPCalc();
        }

        private void netMaskComboBox_SelectedIndexChanged(object sender, System.EventArgs e)
        {
            if (ip == null || ip.getIp() == null || fill) return;
            if (ip.getNetworkClassPrefix() == -1) return;

            int select = netMaskComboBox.SelectedIndex;
            int prefix = select + ip.getNetworkClassPrefix();
            if (select != 0 && !ip.isFirstSubNetBit()) prefix++;
            //int prefix = Integer.parseInt((String)main.getJcb_Calc_NetworkMask().getSelectedItem());
            ip.setNetworkPrefix(prefix);

            fillIPCalc();
        }

        private void netClassComboBox_SelectedIndexChanged(object sender, System.EventArgs e)
        {
            if (fill) return;
            switch (tbNETClass.SelectedIndex)
            {
                case 0:
                    tbIPAddress.Text = "1.0.0.1";
                    break;
                case 1:
                    tbIPAddress.Text = "128.0.0.1";
                    break;
                case 2:
                    tbIPAddress.Text = "192.0.0.1";
                    break;
                case 3:
                    tbIPAddress.Text = "224.0.0.1";
                    break;
                case 4:
                    tbIPAddress.Text = "240.0.0.1";
                    break;
            }

            newIP();
        }

        private void firstBitCheckBox_CheckedChanged(object sender, System.EventArgs e)
        {
            if (ip == null || ip.getIp() == null || fill) return;

            ip.setFirstSubNetBit((bool)firstBitCheckBox.IsChecked);
            fillIPCalc();
        }

        private void nextSubnetButt_Click(object sender, System.EventArgs e)
        {
            if (ip == null || ip.getIp() == null || fill) return;
            ///nextNumOfHosts.BackColor = Color.White;

            try
            {
                int hosts = Int32.Parse(nextNumOfHosts.Text);

                IPTool newIp = ip.getNextSubNet(hosts);
                if (newIp == null)
                {
                    //ToManyHosts
                    noticeLabel.Content = "Info stuff: Number of hosts in this network-class not possible!";
                    return;
                }
                ip = newIp;
                tbIPAddress.Text = ip.getIp();
            }
            catch (System.FormatException)
            {
                //nextNumOfHosts.BackColor = Color.Red;
                return;
            }
            catch (Exception e1)
            {
                MessageBox.Show(e1.StackTrace);
                return;
            }

            fillIPCalc();
        }

        private void calcButt_Click(object sender, System.EventArgs e)
        {
            newIP();
        }

        #endregion

        private void btnNextSubnet_Click(object sender, RoutedEventArgs e)
        {
            if (ip == null || ip.getIp() == null || fill) return;


            try
            {
                int hosts = Int32.Parse(nextNumOfHosts.Text);

                IPTool newIp = ip.getNextSubNet(hosts);
                if (newIp == null)
                {
                    //ToManyHosts
                    noticeLabel.Content = "Info stuff: Number of hosts in this network-class not possible!";
                    return;
                }
                ip = newIp;
                tbIPAddress.Text = ip.getIp();
            }
            catch (System.FormatException)
            {
                //nextNumOfHosts.BackColor = Color.Red;
                return;
            }
            catch (Exception e1)
            {
                MessageBox.Show(e1.StackTrace);
                return;
            }

            fillIPCalc();
        }
    }
}