/*

 * 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.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 String user;

    private String uuid;

    public UI() {

    }

    private Viewable checkLogin() {

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

        if (cookie != null) {

            String id = cookie.getValue();

            String us;

            try {

                us = base.path("login").queryParam("id", id).

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

            } catch (UniformInterfaceException ex) {

                ex.printStackTrace();

                us = "";

            }

            if (us.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 = 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 (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);

        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).

            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.equals(white) || user.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 + ") 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);

    }

    //

    // 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;

        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;

        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);

        map.put("user", user);

        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);

    }

}