/*

 * 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.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.webidor.resources.Quoridor;

import java.io.File;

import java.io.FileInputStream;

import java.io.IOException;

import java.net.URI;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.Iterator;

import java.util.List;

import java.util.Map;

import java.util.Properties;

import javax.ws.rs.DefaultValue;

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.Context;

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 org.codehaus.jettison.json.JSONArray;

import org.codehaus.jettison.json.JSONException;

import org.codehaus.jettison.json.JSONObject;

/**

 *

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

 */

@Path("/")

public final class UI {

    private static WebResource base;

    @Context

    private HttpHeaders headers;

    private String user;

    public UI() {

    }

    private Viewable checkLogin() {

        if (headers.getCookies().containsKey("login")) {

            user = headers.getCookies().get("login").getValue();

            return null;

        }

        return new Viewable("login.fmt", null);

    }

    @POST

    @Path("login")

    @Produces(MediaType.TEXT_HTML)

    public Response login(

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

    ) throws Exception {

        File f = new File(new File(new File(System.getProperty("user.home")), ".quoridor"), "passwd");

        Properties p = new Properties();

        p.load(new FileInputStream(f));

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

            return Response.seeOther(new URI("/")).cookie(new NewCookie("login", name)).entity(welcomeImpl()).build();

        } else {

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

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

        }

    }

    @GET

    @Produces(MediaType.TEXT_HTML)

    public Viewable welcome() throws JSONException {

        Viewable v = checkLogin();

        if (v != null) {

            return v;

        }

        return welcomeImpl();

    }

    @GET

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

    @Produces(MediaType.TEXT_HTML)

    public Viewable board(@PathParam("id") String id) throws JSONException {

        Viewable v = checkLogin();

        if (v != null) {

            return v;

        }

        Map<?,?> obj = (Map<?,?>)convert(base.path("games").path(id).accept(MediaType.APPLICATION_JSON_TYPE).get(JSONObject.class));

        return new Viewable("game.fmt", obj);

    }

    @GET

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

    @Produces(MediaType.TEXT_HTML)

    public Viewable 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

    ) throws JSONException {

        Viewable v = checkLogin();

        if (v != null) {

            return v;

        }

        WebResource wr = base.path("games").path(id).queryParam("player", user);

        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);

        }

        return board(id);

    }

    @GET

    @Path("games/create")

    @Produces(MediaType.TEXT_HTML)

    public Viewable create(

        @QueryParam("white") String white,

        @QueryParam("black") String black

    ) throws JSONException {

        Viewable v = checkLogin();

        if (v != null) {

            return v;

        }

        Object obj = convert(

            base.path("games").queryParam("white", white).

            queryParam("black", black).post(JSONObject.class)

        );

        Map<?,?> map = (Map<?,?>)obj;

        String id = (String)map.get("id");

        return board(id);

    }

    private static Object getJson(WebResource res) throws JSONException {

        return convert(res.accept(MediaType.APPLICATION_JSON_TYPE).get(JSONArray.class));

    }

    private static Object convert(Object obj) throws JSONException {

        if (obj instanceof JSONArray) {

            JSONArray arr = (JSONArray)obj;

            final int length = arr.length();

            List<Object> res = new ArrayList<Object>(length);

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

                res.add(convert(arr.get(i)));

            }

            return res;

        } else if (obj instanceof JSONObject) {

            JSONObject json = (JSONObject)obj;

            Map<Object,Object> map = new HashMap<Object,Object>(json.length() * 2 / 3);

            for (Iterator it = json.keys(); it.hasNext();) {

                String key = (String)it.next();

                map.put(key, convert(json.get(key)));

            }

            return map;

        } else {

            return obj;

        }

    }

    //

    // start the server

    //

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

        HttpServer api = Quoridor.start(9998);

        Client client = new Client();

        base = client.resource(new URI("http://localhost:9998/api/"));

        HttpServer s = start(9997);

        System.out.println(

            "Quoridor started at port 9997\n" + "Hit enter to stop it..."

        );

        System.in.read();

        s.stop(0);

        System.exit(0);

    }

    static HttpServer start(int port) throws IOException {

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

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

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

        server.start();

        return server;

    }

    private Viewable welcomeImpl() throws JSONException {

        Object obj = getJson(base.path("games"));

        return new Viewable("index.fmt", obj);

    }

}