kn.uni.gis.foxhunt.context.GameContext.java Source code

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Here is the source code for kn.uni.gis.foxhunt.context.GameContext.java

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/**
 * Copyright (C) 2013 Marcel Hanser & Martin Koelbl <nanohome.de@googlemail.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package kn.uni.gis.foxhunt.context;

import java.io.IOException;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicReference;

import kn.uni.gis.foxhunt.context.HttpContext.EntityHandlerAdapter;
import kn.uni.gis.foxhunt.pojo.Game;

import org.apache.http.HttpEntity;
import org.apache.http.HttpStatus;
import org.apache.http.ParseException;
import org.apache.http.util.EntityUtils;

public final class GameContext {

    private static Game currentGame;

    public static boolean isGameRunning() {
        return currentGame != null;
    }

    public static Game getGame() {
        return currentGame;
    }

    /**
     * creates a new hunter game
     * 
     * @param id
     * @param playerId
     * @param playerName
     */
    public static void newHunterGame(String id, String playerId, String playerName) throws GameException {
        currentGame = new Game(id, playerId, playerName, Util.createHunterUrl(id, playerId),
                Util.createGameUrl(id));
        if (!!!isGameActive()) {
            throw new GameException("Game is not active");
        }
    }

    /**
     * creates a new fox game
     * 
     * @param id
     * @param playerName
     */
    public static void newFoxGame(String playerName) throws GameException {

        final AtomicReference<String> ref = new AtomicReference<String>();
        final AtomicReference<Exception> exc = new AtomicReference<Exception>();
        HttpContext.getInstance().put(SettingsContext.getInstance().getServerUrl(), null,
                new EntityHandlerAdapter() {
                    @Override
                    public void handleEntity(HttpEntity entity, int statusCode) {
                        if (statusCode == HttpStatus.SC_OK) {
                            try {
                                ref.set(EntityUtils.toString(entity));

                            } catch (ParseException e) {
                                exc.set(e);
                            } catch (IOException e) {
                                exc.set(e);
                            }
                        } else {
                            exc.set(new GameException("bad status code: " + statusCode));
                        }
                    }

                    @Override
                    public void handleException(Exception exception) {
                        exc.set(exception);
                    }
                });

        if (ref.get() == null) {
            throw exc.get() != null ? new GameException(exc.get())
                    : new GameException("unrecognized error code from server");
        }
        currentGame = new Game(ref.get(), playerName, Util.createFoxUrl(ref.get()), Util.createGameUrl(ref.get()));
    }

    public static void setGame(Game game) {
        currentGame = game;
    }

    public static void clearGame() {
        currentGame = null;
    }

    public static boolean isGameActive() {
        final AtomicBoolean bool = new AtomicBoolean(false);
        HttpContext.getInstance().get(currentGame.getGameUrl().toString(), new EntityHandlerAdapter() {
            @Override
            public void handleEntity(HttpEntity entity, int statusCode) {
                bool.set(statusCode == HttpStatus.SC_OK);
            }
        });

        return bool.get();
    }

}