/*

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

  *

  * The contents of this file are subject to the terms of either the GNU

  * General Public License Version 2 only ("GPL") or the Common

  * Development and Distribution License("CDDL") (collectively, the

  * "License"). You may not use this file except in compliance with the

  * License. You can obtain a copy of the License at

  * http://www.netbeans.org/cddl-gplv2.html

  * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the

  * specific language governing permissions and limitations under the

  * License.  When distributing the software, include this License Header

  * Notice in each file and include the License file at

  * nbbuild/licenses/CDDL-GPL-2-CP.  Sun designates this

  * particular file as subject to the "Classpath" exception as provided

  * by Sun in the GPL Version 2 section of the License file that

  * accompanied this code. If applicable, add the following below the

  * License Header, with the fields enclosed by brackets [] replaced by

  * your own identifying information:

  * "Portions Copyrighted [year] [name of copyright owner]"

  *

  * Contributor(s):

  *

  * Portions Copyrighted 2009 Jaroslav Tulach

  */

 package cz.xelfi.quoridor.freemarkerdor;

 import com.sun.jersey.api.client.Client;

 import com.sun.jersey.api.client.UniformInterfaceException;

 import com.sun.jersey.api.client.WebResource;

 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.view.Viewable;

 import com.sun.net.httpserver.HttpServer;

 import cz.xelfi.quoridor.Board;

 import cz.xelfi.quoridor.IllegalPositionException;

 import java.io.IOException;

 import java.io.InputStream;

 import java.net.URI;

 import java.util.HashMap;

 import java.util.List;

 import java.util.Locale;

 import java.util.Map;

 import java.util.MissingResourceException;

 import java.util.Properties;

 import java.util.ResourceBundle;

 import java.util.concurrent.Callable;

 import javax.ws.rs.DefaultValue;

 import javax.ws.rs.FormParam;

 import javax.ws.rs.GET;

 import javax.ws.rs.POST;

 import javax.ws.rs.Path;

 import javax.ws.rs.PathParam;

 import javax.ws.rs.Produces;

 import javax.ws.rs.QueryParam;

 import javax.ws.rs.core.CacheControl;

 import javax.ws.rs.core.Context;

 import javax.ws.rs.core.Cookie;

 import javax.ws.rs.core.HttpHeaders;

 import javax.ws.rs.core.MediaType;

 import javax.ws.rs.core.NewCookie;

 import javax.ws.rs.core.Response;

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

 import org.openide.util.Exceptions;

 import org.w3c.dom.Document;

 /**

  *

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

  */

 @Path("/")

 public final class UI {

     private static final String version;

     static {

         Properties p = new Properties();

         try {

             InputStream is = FreemarkerProcessor.class.getResourceAsStream("/META-INF/maven/org.apidesign/freemarkerdor/pom.properties"); // NOI18N

             if (is != null) {

                 p.load(is);

             }

         } catch (IOException ex) {

             ex.printStackTrace();

         }

         version = p.getProperty("version", "unknown"); // NOI18N

     }

     private static WebResource base;

     @Context

     private HttpHeaders headers;

     private UserInfo user;

     private String uuid;

     public UI() {

     }

     private Viewable checkLogin() {

         Cookie cookie = headers.getCookies().get("login");

         if (cookie != null) {

             String id = cookie.getValue();

             UserInfo us;

             try {

                 us = base.path("users").queryParam("loginID", id).

                     accept(MediaType.TEXT_XML).get(UserInfo.class);

             } catch (Exception ex) {

                 ex.printStackTrace();

                 us = null;

             }

             if (us != null && us.getId().length() > 0) {

                 user = us;

                 uuid = id;

                 return null;

             }

         }

         return viewable("login.fmt", null);

     }

     @POST

     @Path("login")

     @Produces(MediaType.TEXT_HTML)

     public Response login(

         @FormParam("name") String name, @FormParam("password") String password

     ) throws Exception {

         uuid = base.path("login").queryParam("name", name).queryParam("password", password).

             accept(MediaType.TEXT_PLAIN).put(String.class);

         if (uuid != null) {

             user = new UserInfo(name);

             NewCookie nc = new NewCookie("login", uuid, null, null, null, 3600 * 24 * 7, false);

             return Response.ok().cookie(nc).entity(viewable("login.fmt", null)).build();

         } else {

             Viewable v = viewable("login.fmt", null, "message", "Invalid name or password: " + name);

             return Response.status(1).entity(v).build();

         }

     }

     @GET

     @Produces(MediaType.TEXT_HTML)

     public Response welcome(@QueryParam("maxItems") @DefaultValue("10") int maxItems) {

         Viewable v = checkLogin();

         ResponseBuilder resp = Response.ok();

         if (v == null) {

             v = welcomeImpl("maxItems", maxItems);

         }

         CacheControl cc = new CacheControl();

         cc.setNoCache(true);

         resp.cacheControl(cc);

         return resp.entity(v).build();

     }

     @GET

     @Path("games/{id}.png")

     @Produces("image/png")

     public Response getBoardImage(

         @PathParam("id") String id,

         @QueryParam("fieldSize") @DefaultValue("50") int fieldSize,

         @QueryParam("move") @DefaultValue("-1") int move

     ) throws IllegalPositionException {

         WebResource wr = base.path("games").path(id);

         if (move != -1) {

             wr = wr.queryParam("move", "" + move);

         }

         String txt = wr.accept(MediaType.TEXT_PLAIN).get(String.class);

         Board b = Board.valueOf(txt);

         ResponseBuilder resp = Response.ok();

         CacheControl cc = new CacheControl();

         cc.setNoCache(true);

         resp.cacheControl(cc);

         return resp.entity(BoardImage.draw(b, fieldSize)).build();

     }

     private Response board(String id) {

         return board(id, "", null);

     }

     @GET

     @Path("games/{id}/")

     @Produces(MediaType.TEXT_HTML)

     public Response board(

         @PathParam("id") String id,

         @QueryParam("format") @DefaultValue("") String format,

         @QueryParam("move") @DefaultValue("-1") String move

     ) {

         return board(id, null, format, move);

     }

     private Response board(@PathParam("id") String id, String msg, String format, String m) {

         Viewable v = checkLogin();

         if (v != null) {

             return Response.ok().entity(v).build();

         }

         int move;

         try {

             move = Integer.parseInt(m);

         } catch (NumberFormatException ex) {

             move = -1;

         }

         WebResource url = base.path("games").path(id);

         if (move >= 0) {

             url = url.queryParam("move", "" + move);

         }

         ResponseBuilder resp = Response.ok();

         CacheControl cc = new CacheControl();

         cc.setNoCache(true);

         resp.cacheControl(cc);

         Cookie cFormat = headers.getCookies().get("format");

         if (format.length() == 0) {

             if (cFormat != null) {

                 format = cFormat.getValue();

             } else {

                 if (isMobile(headers)) {

                     format = "small";

                 }

             }

         } else {

             if (cFormat == null || !format.equals(cFormat.getValue())) {

                 resp.cookie(new NewCookie("format", format));

             }

         }

         Document doc = url.accept(MediaType.TEXT_XML).get(Document.class);

         Board b;

         try {

             b = Board.valueOf(doc.getElementsByTagName("board").item(0).getTextContent());

         } catch (IllegalPositionException ex) {

             Exceptions.printStackTrace(ex);

             b = Board.empty();

         }

         v = viewable("game.fmt", doc, "message", msg, "format", format, "board", b);

         return resp.entity(v).build();

     }

     @GET

     @Path("games/{id}/move")

     @Produces(MediaType.TEXT_HTML)

     public Response move(

         @PathParam("id") String id,

         @QueryParam("type") String type,

         @QueryParam("direction") String direction,

         @QueryParam("direction-next") @DefaultValue("") String directionNext,

         @QueryParam("column") @DefaultValue("") String column,

         @QueryParam("row") @DefaultValue("") String row

     ) {

         Viewable v = checkLogin();

         if (v != null) {

             return Response.ok().entity(v).build();

         }

         WebResource wr = base.path("games").path(id).

             queryParam("loginID", uuid).

             queryParam("player", user.getId());

         try {

             if (type.equals("resign")) {

                 wr.queryParam("move", "RESIGN").put();

                 return board(id);

             }

             if (type.equals("fence")) {

                 wr.queryParam("move", direction.charAt(0) + column + row).put();

                 return board(id);

             }

             if (type.equals("move")) {

                 wr.queryParam("move", direction + directionNext).put();

                 return board(id);

             }

         } catch (UniformInterfaceException ex) {

             return board(id, "WRONG_MOVE", "-1");

         }

         return board(id);

     }

     @GET

     @Path("games/{id}/comment")

     @Produces(MediaType.TEXT_HTML)

     public Response comment(

         @PathParam("id") String id,

         @QueryParam("comment") String comment

     ) {

         Viewable v = checkLogin();

         if (v != null) {

             return Response.ok().entity(v).build();

         }

         WebResource wr = base.path("games").path(id).

             queryParam("loginID", uuid).

             queryParam("player", user.getId()).

             queryParam("comment", comment);

         wr.put();

         return board(id);

     }

     @GET

     @Path("games/create")

     @Produces(MediaType.TEXT_HTML)

     public Response create(

         @QueryParam("white") String white,

         @QueryParam("black") String black

     ) {

         Viewable v = checkLogin();

         if (v != null) {

             return Response.status(Response.Status.FORBIDDEN).entity(v).build();

         }

         if (user.getId().equals(white) || user.getId().equals(black)) {

             Object obj =

                 base.path("games").

                 queryParam("loginID", uuid).

                 queryParam("white", white).

                 queryParam("black", black).accept(MediaType.TEXT_XML).post(Document.class);

             return Response.ok(welcomeImpl()).build();

         } else {

             return Response.status(Response.Status.NOT_FOUND).

                 entity(welcomeImpl("message", "You (" + user.getId() + ") must be white or black!")).build();

         }

     }

     private Viewable welcomeImpl(Object... args) {

         final Document got = base.path("games").accept(MediaType.TEXT_XML).get(Document.class);

         return viewable("index.fmt", got, args);

     }

     @GET

     @Path("options")

     public Response changeOptions(

         @QueryParam("email") String email,

         @QueryParam("language") String language

     ) {

         Viewable v = checkLogin();

         if (v != null) {

             return Response.status(Response.Status.FORBIDDEN).entity(v).build();

         }

         if (email != null) {

             UserInfo ui = base.path("users/" + user.getId()).

                 queryParam("loginID", uuid).

                 queryParam("name", "email").

                 queryParam("value", email).accept(MediaType.TEXT_XML).post(UserInfo.class);

         }

         if (language != null) {

             UserInfo ui = base.path("users/" + user.getId()).

                 queryParam("loginID", uuid).

                 queryParam("name", "language").

                 queryParam("value", language).

                 accept(MediaType.TEXT_XML).post(UserInfo.class);

         }

         return welcome(10);

     }

     //

     // start the server

     //

     public static void main(String[] args) throws Exception {

         int port = 9333;

         if (args.length > 1) {

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

         }

         String remoteAPI = args.length >= 2 ? args[1] : null;

         Locale.setDefault(Locale.ROOT);

         Callable<Void> r = startServers(port, remoteAPI);

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

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

             System.in.read();

         } else {

             synchronized (UI.class) {

                 UI.class.wait();

             }

         }

         r.call();

         System.exit(0);

     }

     static Callable<Void> startServers(int port, String remoteAPI) throws Exception {

         Client client = new Client();

         final HttpServer apiServer;

         if (remoteAPI == null) {

             throw new IllegalArgumentException("Provide URL to API server"); // NOI18N

         } else {

             base = client.resource(new URI(remoteAPI));

             apiServer = null;

         }

         ResourceConfig rc = new PackagesResourceConfig(

             "cz.xelfi.quoridor.freemarkerdor"

         );

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

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

         server.start();

         System.out.println("Quoridor started at port " + port);

         return new Callable<Void>() {

             public Void call() throws Exception {

                 if (apiServer != null) {

                     apiServer.stop(0);

                 }

                 server.stop(0);

                 return null;

             }

         };

     }

     private Viewable viewable(String page, Document doc, Object... more) {

         ResourceBundle rb = null;

         String lng = user == null ? null : user.getProperty("language"); // NOI18N

         if (lng != null) {

                 try {

                     Locale l = new Locale(lng);

                     rb = ResourceBundle.getBundle("cz.xelfi.quoridor.freemarkerdor.UI.Bundle", l);

                 } catch (MissingResourceException e) {

                     // OK

                 }

         }

         if (rb == null) {

             for (Locale l : headers.getAcceptableLanguages()) {

                 try {

                     rb = ResourceBundle.getBundle("cz.xelfi.quoridor.freemarkerdor.UI.Bundle", l);

                 } catch (MissingResourceException e) {

                     // OK

                 }

             }

         }

         if (rb == null) {

             rb = ResourceBundle.getBundle("cz.xelfi.quoridor.freemarkerdor.UI.Bundle", Locale.ENGLISH);

         }

         Map<String,Object> map = new HashMap<String,Object>();

         map.put("doc", doc);

         if (user != null) {

             map.put("user", user.getId());

             map.put("email", user.getProperty("email"));

         }

         map.put("bundle", rb);

         map.put("now", System.currentTimeMillis());

         map.put("version", version);

         for (int i = 0; i < more.length; i += 2) {

             map.put((String)more[i],more[i + 1]);

         }

         return new Viewable(page, map);

     }

     private static boolean isMobile(HttpHeaders headers) {

         final String[] keywords = {

             "Profile/MIDP",

         };

         List<String> agent = headers.getRequestHeader(HttpHeaders.USER_AGENT);

         if (agent != null) {

             for (String a : agent) {

                 for (String k : keywords) {

                     if (a.contains(k)) {

                         return true;

                     }

                 }

             }

         }

         return false;

     }

 }