using System;
using System.Configuration;
using System.Security.Cryptography.X509Certificates;
using System.Text;
using WebSocketSharp;
using WebSocketSharp.Net;
using WebSocketSharp.Server;

namespace Example3
{
  public class Program
  {
    public static void Main (string[] args)
    {
      // Create a new instance of the HttpServer class.
      //
      // If you would like to provide the secure connection, you should
      // create a new instance with the 'secure' parameter set to true,
      // or an https scheme HTTP URL.

      var httpsv = new HttpServer (4649);
      //var httpsv = new HttpServer (5963, true);

      //var httpsv = new HttpServer (System.Net.IPAddress.Any, 4649);
      //var httpsv = new HttpServer (System.Net.IPAddress.Any, 5963, true);

      //var httpsv = new HttpServer (System.Net.IPAddress.IPv6Any, 4649);
      //var httpsv = new HttpServer (System.Net.IPAddress.IPv6Any, 5963, true);

      //var httpsv = new HttpServer ("http://0.0.0.0:4649");
      //var httpsv = new HttpServer ("https://0.0.0.0:5963");

      //var httpsv = new HttpServer ("http://[::0]:4649");
      //var httpsv = new HttpServer ("https://[::0]:5963");

      //var httpsv = new HttpServer (System.Net.IPAddress.Loopback, 4649);
      //var httpsv = new HttpServer (System.Net.IPAddress.Loopback, 5963, true);

      //var httpsv = new HttpServer (System.Net.IPAddress.IPv6Loopback, 4649);
      //var httpsv = new HttpServer (System.Net.IPAddress.IPv6Loopback, 5963, true);

      //var httpsv = new HttpServer ("http://localhost:4649");
      //var httpsv = new HttpServer ("https://localhost:5963");

      //var httpsv = new HttpServer ("http://127.0.0.1:4649");
      //var httpsv = new HttpServer ("https://127.0.0.1:5963");

      //var httpsv = new HttpServer ("http://[::1]:4649");
      //var httpsv = new HttpServer ("https://[::1]:5963");
#if DEBUG
      // To change the logging level.
      httpsv.Log.Level = LogLevel.Trace;

      // To change the wait time for the response to the WebSocket Ping or Close.
      //httpsv.WaitTime = TimeSpan.FromSeconds (2);

      // Not to remove the inactive WebSocket sessions periodically.
      //httpsv.KeepClean = false;
#endif
      // To provide the secure connection.
      /*
      var cert = ConfigurationManager.AppSettings["ServerCertFile"];
      var passwd = ConfigurationManager.AppSettings["CertFilePassword"];
      httpsv.SslConfiguration.ServerCertificate = new X509Certificate2 (cert, passwd);
       */

      // To provide the HTTP Authentication (Basic/Digest).
      /*
      httpsv.AuthenticationSchemes = AuthenticationSchemes.Basic;
      httpsv.Realm = "WebSocket Test";
      httpsv.UserCredentialsFinder = id => {
          var name = id.Name;

          // Return user name, password, and roles.
          return name == "nobita"
                 ? new NetworkCredential (name, "password", "gunfighter")
                 : null; // If the user credentials aren't found.
        };
       */

      // To resolve to wait for socket in TIME_WAIT state.
      //httpsv.ReuseAddress = true;

      // Set the document root path.
      httpsv.RootPath = ConfigurationManager.AppSettings["RootPath"];

      // Set the HTTP GET request event.
      httpsv.OnGet += (sender, e) => {
          var req = e.Request;
          var res = e.Response;

          var path = req.RawUrl;
          if (path == "/")
            path += "index.html";

          var content = httpsv.GetFile (path);
          if (content == null) {
            res.StatusCode = (int) HttpStatusCode.NotFound;
            return;
          }

          if (path.EndsWith (".html")) {
            res.ContentType = "text/html";
            res.ContentEncoding = Encoding.UTF8;
          }
          else if (path.EndsWith (".js")) {
            res.ContentType = "application/javascript";
            res.ContentEncoding = Encoding.UTF8;
          }

          res.WriteContent (content);
        };

      // Add the WebSocket services.
      httpsv.AddWebSocketService<Echo> ("/Echo");
      httpsv.AddWebSocketService<Chat> ("/Chat");

      // Add the WebSocket service with initializing.
      /*
      httpsv.AddWebSocketService<Chat> (
        "/Chat",
        () =>
          new Chat ("Anon#") {
            // To send the Sec-WebSocket-Protocol header that has a subprotocol name.
            Protocol = "chat",
            // To ignore the Sec-WebSocket-Extensions header.
            IgnoreExtensions = true,
            // To emit a WebSocket.OnMessage event when receives a ping.
            EmitOnPing = true,
            // To validate the Origin header.
            OriginValidator = val => {
                // Check the value of the Origin header, and return true if valid.
                Uri origin;
                return !val.IsNullOrEmpty ()
                       && Uri.TryCreate (val, UriKind.Absolute, out origin)
                       && origin.Host == "localhost";
              },
            // To validate the cookies.
            CookiesValidator = (req, res) => {
                // Check the cookies in 'req', and set the cookies to send to
                // the client with 'res' if necessary.
                foreach (Cookie cookie in req) {
                  cookie.Expired = true;
                  res.Add (cookie);
                }

                return true; // If valid.
              }
          }
      );
       */

      httpsv.Start ();
      if (httpsv.IsListening) {
        Console.WriteLine ("Listening on port {0}, and providing WebSocket services:", httpsv.Port);
        foreach (var path in httpsv.WebSocketServices.Paths)
          Console.WriteLine ("- {0}", path);
      }

      Console.WriteLine ("\nPress Enter key to stop the server...");
      Console.ReadLine ();

      httpsv.Stop ();
    }
  }
}