using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.Net;

using System.IO;

using System.Net.Sockets;





namespace geoip

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

            this.KeyPress += new KeyPressEventHandler(Form1_KeyPress);

            this.ipCombo.KeyDown += new KeyEventHandler( ipCombo_KeyDown );

            unpickle();

        }

        void Form1_KeyPress(object sender, KeyPressEventArgs e)

        {

            // break on escape, i can't live without it!

            if (e.KeyChar == 27)

                this.Close();

        }





        public void ipCombo_KeyDown(object sender, KeyEventArgs e)

        {

            if (((KeyEventArgs)e).KeyValue == 13)

            {

                if (this.ipCombo.Text != "")

                {

                    findButton.PerformClick(); // press it visibly

                }

            }

        }



        private void osmSearchCompleted(object sender, EventArgs e)

        {

            textBox.Enabled = true;

            MapControl.SearchProvider search = (MapControl.SearchProvider)sender;

            foreach (MapControl.SearchResult r in search.Results)

            {

                textBox.Text += r.DisplayName + "\r\n    " + r.Latitude + " " + r.Longitude + "\r\n";

            }

        }



        private string findIp(string Hostname)

        {

            try

            {

                if (Uri.CheckHostName(Hostname) == UriHostNameType.Unknown)

                {

                    return null;

                }

                IPHostEntry host = Dns.GetHostEntry(Hostname);

                return host.AddressList[0].ToString();

            }

            catch (Exception) { }

            return null;

        }

        

        // this is the free lookup, sometimes does not find stuff.

        private string getlatlon(string ip)

        {

            string ll = null;

            WebClient wc = new WebClient();

            Stream str = wc.OpenRead("http://api.hostip.info/get_html.php?ip="+ip+"&position=true");

            StreamReader sr = new StreamReader(str);

            while ( true )

            { 

                string line = sr.ReadLine();

                if ( line == null )

                    break;

                if ( line.StartsWith("Latitude: " ) )

                    ll = line.Substring( 10 );

                else

                if ( line.StartsWith("Longitude: " ) )

                    ll += " " + line.Substring( 11 );

                else

                    textBox.Text += line + "\r\n";

            }

            textBox.Text += "latlon: " + ll + "\r\n";

            textBox.Text += "(fetched from http://api.hostip.info)\r\n";

            return ll;

        }



        private string whois(string whoisServer, string url)

        {

            StringBuilder stringBuilderResult = new StringBuilder();

            TcpClient tcpClinetWhois = new TcpClient(whoisServer, 43);

            NetworkStream networkStreamWhois = tcpClinetWhois.GetStream();

            BufferedStream bufferedStreamWhois = new BufferedStream(networkStreamWhois);

            StreamWriter streamWriter = new StreamWriter(bufferedStreamWhois);



            streamWriter.WriteLine(url);

            streamWriter.Flush();



            StreamReader streamReaderReceive = new StreamReader(bufferedStreamWhois);



            while (!streamReaderReceive.EndOfStream)

                stringBuilderResult.AppendLine(streamReaderReceive.ReadLine());



            return stringBuilderResult.ToString();

        }



        private void getMap(string lat, string lon)

        {

            try

            {   // find map for latlon:

                string query = "http://tah.openstreetmap.org/MapOf/index.php?lat=" + lat + "&long=" + lon + "&z=" + zoomBox.Text + "&w=400&h=400&format=png";

                query = query.Replace(',', '.'); // arghhh, i HATE localization!!!!!(german, in this case)

                pictureBox1.Load(query);

            }

            catch (Exception ex) { textBox.Text += "\r\n\r\n" + ex.Message; return; }

        }

        

        private void findButton_Click(object sender, EventArgs e)

        {

            if (textBox.SelectedText != "")

            {   // check if a lat-lon was selected:

                string[] ss = textBox.SelectedText.Split(" ".ToCharArray());

                if (ss.Length == 2)

                {

                    if ((Double.Parse(ss[0]) != 0) && (Double.Parse(ss[1]) != 0))

                    {

                        ipCombo.Text = textBox.SelectedText;

                    }

                }

            }

            string lat = "", lon = "";

            textBox.Text = "";

            textBox.Enabled = false;



            // chop copy&paste blanks:

            while (ipCombo.Text.StartsWith(" "))

               ipCombo.Text = ipCombo.Text.Remove(0, 1);



            //check for ip or hostname

            string ip = findIp(ipCombo.Text);

            if (ip != null)

            {

                // check free lookup first

                string ll = getlatlon(ip);

                if (ll != null && ll != " ")

                {

                    string[] ss = ll.Split(" ".ToCharArray());

                    if (ss.Length == 2)

                    {

                        if ((Double.Parse(ss[0]) != 0) && (Double.Parse(ss[1]) != 0))

                        {

                            lat = ss[0];

                            lon = ss[1];

                        }

                        textBox.Enabled = true;

                    }

                }

                if ( lat=="" && lon=="" )

                {

                    // restricted to 40 shots a day.

                    IP2Geo geo = new IP2Geo();

                    IPInformation res = null;

                    try

                    {   // find latlon from ip or hostname:

                        res = geo.ResolveIP(ip, "0"); // 0 is the limited testkey.

                        if (res == null) return;

                        if (res.Longitude == 0 && res.Latitude == 0)

                        {

                            textBox.Text = res.Organization; // please wait or get a key ...

                            return;

                        }

                        textBox.Enabled = true;

                        textBox.Text = res.City + " (" + res.Country + ")\r\n" +

                                       "latlon:" + res.Latitude + " " + res.Longitude + "\r\n" +

                                       "ip:" + ip;

                        lat = "" + res.Latitude;

                        lon = "" + res.Longitude;

                        textBox.Text += "\r\n(fetched from http://ws.cdyne.com)\r\n";

                    }

                    catch (Exception ex) { textBox.Text += "\r\n\r\n" + ex.Message; return; }

                }

                //textBox.Text += "\r\n--- whois " + ip + "\r\n";

                //textBox.Text += whois("whois.internic.com", ip); ;

            }



            // check for latlon in input:

            if (lat == "" && lon == "")

            {

                string[] ss = ipCombo.Text.Split(" ".ToCharArray());

                if (ss.Length == 2)

                {

                    if ((Double.Parse(ss[0]) != 0) && (Double.Parse(ss[1]) != 0))

                    {

                        lat = ss[0];

                        lon = ss[1];

                    }

                }

            }

            // still not found?! check osm for place names :

            if (lat == "" && lon == "")

            {

                MapControl.SearchProvider search = new MapControl.SearchProvider();

                search.SearchCompleted += new EventHandler(osmSearchCompleted);

                if (search.Search(ipCombo.Text))

                {

                    textBox.Enabled = false;

                }

            }



            if (lat != "" && lon != "")

            {

                getMap(lat, lon);

            }

            if (!this.ipCombo.Items.Contains(this.ipCombo.Text))

                this.ipCombo.Items.Add(this.ipCombo.Text);

        }



        private void label_click(int id, double off)

        {

            string[] ss = ipCombo.Text.Split(" ".ToCharArray());

            if (ss.Length == 2)

            {

                double [] latlon = new double[2] {Double.Parse(ss[0]),Double.Parse(ss[1])};

                if ((latlon[0] != 0) && (latlon[1] != 0))

                {

                    double f = off / (18-Double.Parse(zoomBox.Text));

                    ipCombo.Text = ipCombo.Text.Replace(ss[id], ("" + (latlon[id] + f)));

                    getMap(ss[0], ss[1]);

                }

            }

        }

        private void labelL_Click(object sender, EventArgs e)

        {

            label_click(1, -0.02);

        }

        private void labelU_Click(object sender, EventArgs e)

        {

            label_click(0,  0.02);

        }

        private void labelD_Click(object sender, EventArgs e)

        {

            label_click(0, -0.02);

        }

        private void labelR_Click(object sender, EventArgs e)

        {

            label_click(1,  0.02);

        }



        private void pickle()

        {

            try

            {

                System.IO.StreamWriter file = new System.IO.StreamWriter("ip.txt");

                for (int i = 0; i < ipCombo.Items.Count; i++)

                {

                    file.WriteLine(ipCombo.Items[i].ToString());

                }

                file.WriteLine("#");

                file.Close();

            }

            catch (Exception) { }

        }

        private void unpickle()

        {

            try

            {

                System.IO.StreamReader file = new System.IO.StreamReader("ip.txt");

                while (true)

                {

                    string s = file.ReadLine();

                    if (s == "#") break;

                    ipCombo.Items.Add(s);

                }

                file.Close();

            }

            catch (Exception) { }

        }



    }

}