using System;
using System.IO;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Xml;
using System.Runtime.Serialization.Formatters.Binary;
using MiniHttpd;
namespace AquaparkMonitor
{
    public partial class Aquamonit : Form
    {
        
        // server settings
        string sServerSettingsXML = "MiniHttpdSettings.xml"; //plik XML dla serwera HTTP
        int iServerPort = 3400;
        string sHostName = "aquapark_monitor";

        // app settings        
        string sSettingsAppFile = "settings.xml";
        string sEsokDir = "C:\\esok_file\\"; //katalog pliku ESOK
        string sNTPServer = "pl.pool.ntp.org";
        string sEsokFilename = "statystyka_esok.xml";

        int iIntervalSek = 10; // czas odswierzania danych w monitoringu w sekundach
        int iTempDzie = 20;
        int iTempRek = 20;


        // serwer
        HttpWebServer server = new HttpWebServer();
        BasicAuthenticator auth = new BasicAuthenticator();
        string sRootPath = Path.GetDirectoryName(Application.ExecutablePath) + "\\server\\";

        // Load App Start Settings
        private void LoadAppSettings()
        {
            XmlDocument doc;
            XmlElement docElement;
            try
            {
                doc = new XmlDocument();
                doc.Load(sSettingsAppFile);

                docElement = doc.DocumentElement;
            }
            catch
            {
                return;
            }

        }



        // Load Server HTTP Settings
        private void LoadSettings()
        {
            XmlDocument doc;
            XmlElement docElement;
            try
            {
                doc = new XmlDocument();
                doc.Load(sServerSettingsXML);

                docElement = doc.DocumentElement;
            }
            catch
            {
                return;
            }

            try
            {
                server.Port = int.Parse(docElement["Port"].InnerText);
            }
            catch { }

            try
            {
                server.HostName = docElement["HostName"].InnerText;
            }
            catch { }

            try
            {
                foreach (XmlElement user in docElement["Users"].ChildNodes)
                {
                    auth.AddUserByHash(user["Name"].InnerText, user["Password"].InnerText);
                }
            }
            //catch { }
            finally
            {
            }

        }

        //zapis ustawien serwera do pliku
        void SaveSettings()
        {
            if (InvokeRequired)
            {
                Invoke(new MethodInvoker(SaveSettings));
                return;
            }

            try
            {
                XmlDocument doc = new XmlDocument();
                doc.AppendChild(doc.CreateElement("MiniHttpdSettings"));
                XmlElement element;
                XmlElement docElement = doc.DocumentElement;

                element = doc.CreateElement("Port");
                docElement.AppendChild(element);
                element.InnerText = iServerPort.ToString();

                element = doc.CreateElement("HostName");
                docElement.AppendChild(element);
                element.InnerText = sHostName;

                element = doc.CreateElement("Users");
                docElement.AppendChild(element);
                if (auth.Users != null)
                foreach (string username in auth.Users)
                {
                    XmlElement user = doc.CreateElement("User");
                    XmlElement nameElement = doc.CreateElement("Name");
                    XmlElement passwordElement = doc.CreateElement("Password");

                    nameElement.InnerText = username;
                    passwordElement.InnerText = auth.GetPasswordHash(username);

                    user.AppendChild(nameElement);
                    user.AppendChild(passwordElement);
                    element.AppendChild(user);
                }

                doc.Save(sServerSettingsXML);
            }
			catch(Exception e)
			{
				Console.WriteLine("Error saving server settings:");
				Console.WriteLine(e);
			}

            finally
            {
            }
        }

        public Aquamonit()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {


        }

        private void Form1_Load(object sender, EventArgs e)
        {

            server.Authenticator = auth;
            server.RequireAuthentication = true;
            server.Root = new DriveDirectory(sRootPath);
            server.RequestReceived += server_RequestReceived;
            //auth.AddUser("user", "user123");
            //SaveSettings();
            LoadSettings();
            //start serwera
            try
            {
                server.Start();
            }
            catch (Exception e2)
            {
               Console.Error.WriteLine(e2);
            }
        }

        void server_RequestReceived(object sender, RequestEventArgs e)
        {
            HttpRequest request = e.Request;

            switch (request.Method)
            {
                case "GET":
                    //Otwieramy plik i podmieniamy pola
                    break;
                case "POST":

                    MemoryStream stream = request.PostData;
                    stream.Position = 0;
                    var sr = new StreamReader(stream);
                    string data = sr.ReadToEnd(); // POST data
                    // wykonujemy zapis danych do zmiennych
                    string post_data = Uri.UnescapeDataString(data);
                    string[] elements = post_data.Split('&'); //tworzymy tablice z elementami formularza
                    // iterujemy po wszystkich elementach
                    foreach (string ele in elements) 
                    {
                        if (!string.IsNullOrEmpty(ele))
                        {
                            //kazdy element rozdzielamy na dwa
                            string[] in_el = ele.Split('=');
                            switch (in_el[0])
                            {
                                case "temp_dzie":
                                    break;

                                case "temp_rek":
                                    break;
                                case "interval":
                                    break;
                                case "esok_dir":
                                    break;
                                case "server_ntp":
                                    break;
                            }
                        }

                    }

                    // ... i wywolujemy zapis do pliku z ustawieniami
                    
                   //Console.WriteLine(Uri.UnescapeDataString(data));
                    break;
                    
            }
        }

        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
           
            server.Stop();
        }

    }
}