/*

  * Quoridor server and related libraries

  * Copyright (C) 2009-2010 Jaroslav Tulach <jaroslav.tulach@apidesign.org>

  *

  * This program is free software: you can redistribute it and/or modify

  * it under the terms of the GNU General Public License as published by

  * the Free Software Foundation, either version 3 of the License.

  *

  * This program is distributed in the hope that it will be useful,

  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  * GNU General Public License for more details.

  *

  * You should have received a copy of the GNU General Public License

  * along with this program. Look for COPYING file in the top folder.

  * If not, see http://www.gnu.org/licenses/.

  */

 package cz.xelfi.quoridor.webidor.resources;

 import com.sun.jersey.api.container.httpserver.HttpServerFactory;

 import com.sun.jersey.api.core.PackagesResourceConfig;

 import com.sun.jersey.api.core.ResourceConfig;

 import com.sun.jersey.api.json.JSONWithPadding;

 import com.sun.jersey.spi.resource.Singleton;

 import com.sun.net.httpserver.HttpServer;

 import cz.xelfi.quoridor.webidor.User;

 import java.io.File;

 import java.io.FileInputStream;

 import java.io.IOException;

 import java.net.ServerSocket;

 import java.util.HashMap;

 import java.util.Map;

 import java.util.Properties;

 import java.util.UUID;

 import javax.ws.rs.GET;

 import javax.ws.rs.PUT;

 import javax.ws.rs.Path;

 import javax.ws.rs.Produces;

 import javax.ws.rs.QueryParam;

 import javax.ws.rs.WebApplicationException;

 import javax.ws.rs.core.MediaType;

 import javax.ws.rs.core.Response.Status;

 /**

  *

  * @author Jaroslav Tulach <jtulach@netbeans.org>

  */

 @Path("/")

 @Singleton

 public final class Quoridor {

     private final File path;

     private Games games;

     private Users users;

     private final Map<UUID,String> loggedIn;

     public Quoridor() {

         final String prop = System.getProperty("quoridor.dir"); // NOI18N

         if (prop == null) {

             throw new IllegalStateException("quoridor.dir property must be specified"); // NOI18N

         }

         path = new File(prop);

         path.mkdirs();

         loggedIn = new HashMap<UUID, String>();

         games = new Games(new File(path, "games"), this); // NOI18N

         users = new Users(new File(path, "users"), this); // NOI18N

     }

     @Path("games")

     public Games getGames() {

         return games;

     }

     @Path("users")

     public Users getUsers() {

         return users;

     }

     @Path("login")

     @PUT

     @Produces({ MediaType.TEXT_PLAIN })

     public String login(

         @QueryParam("name") String name,

         @QueryParam("password") String password

     ) throws IOException {

         File f = new File(path, "passwd"); // NOI18Nt

         Properties p = new Properties();

         try {

             p.load(new FileInputStream(f));

         } catch (IOException ex) {

             ex.printStackTrace();

         }

         boolean loggedInOK = false;

         if (name != null && password.equals(p.getProperty(name))) {

             loggedInOK = true;

         } else {

             loggedInOK = getUsers().verifyPassword(name, password);

         }

         if (loggedInOK) {

             UUID uuid = UUID.randomUUID();

             loggedIn.put(uuid, name);

             return uuid.toString();

         } else {

             return null;

         }

     }

     @Path("login")

     @GET

     @Produces({ MediaType.TEXT_PLAIN })

     public String isLoggedIn(

         @QueryParam("id") String id

     ) {

         String ret = null;

         try {

             if (id != null) {

                 ret = loggedIn.get(UUID.fromString(id));

             }

         } catch (IllegalArgumentException ex) {

             // OK, happens for invalid ids

         }

         return ret == null ? "" : ret;

     }

     @Path("login")

     @GET

     @Produces({ "application/x-javascript", MediaType.APPLICATION_JSON, MediaType.TEXT_XML })

     public JSONWithPadding loggedInInfo(

         @QueryParam("callback") String callback,

         @QueryParam("id") String id

     ) throws IOException {

         String ret = null;

         try {

             if (id != null) {

                 ret = loggedIn.get(UUID.fromString(id));

             }

         } catch (IllegalArgumentException ex) {

             // OK, happens for invalid ids

         }

         if (ret == null) {

             throw new WebApplicationException(Status.UNAUTHORIZED);

         } else {

             return getUsers().getUserInfo(callback, id, ret);

         }

     }

     //

     // start the server

     //

     public static void main(String[] args) throws IOException, InterruptedException {

         int port = 9222;

         try {

             port = Integer.parseInt(args[0]);

         } catch (Exception ex) {

             // OK

         }

         HttpServer s = start(port);

         System.out.println(

             "Quoridor started at port " + port + "\n" + "Hit enter to stop it..."

         );

         if (args.length < 2 || !args[args.length - 1].equals("--kill")) {

             System.out.println("Hit enter to stop it...");

             System.in.read();

         } else {

             synchronized (Quoridor.class) {

                 Quoridor.class.wait();

             }

         }

         System.in.read();

         s.stop(0);

         System.exit(0);

     }

     public static HttpServer start(int port) throws IOException {

         if (port == -1) {

             ServerSocket ss = new ServerSocket(0);

             port =ss.getLocalPort();

             ss.close();

         }

         final String baseUri = "http://localhost:" + port + "/";

         if (System.getProperty("quoridor.dir") == null) {

             File home = new File(System.getProperty("user.home"));

             File quoridor = new File(home, ".quoridor");

             System.setProperty("quoridor.dir", quoridor.getPath());

         }

         ResourceConfig rc = new PackagesResourceConfig("cz.xelfi.quoridor.webidor");

         HttpServer server = HttpServerFactory.create(baseUri, rc);

         server.start();

         return server;

     }

 }