/*

 * Hedgewars for Android. An Android port of Hedgewars, a free turn based strategy game

 * Copyright (C) 2012 Simeon Maxein <smaxein@googlemail.com>

 *

 * 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 2

 * of the License, or (at your option) any later version.

 *

 * 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; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

 */

package org.hedgewars.hedgeroid;

import static org.hedgewars.hedgeroid.util.ObjectUtils.equal;

import java.util.Collections;

import java.util.LinkedList;

import java.util.List;

import java.util.Map;

import java.util.TreeMap;

import org.hedgewars.hedgeroid.RoomStateManager;

import org.hedgewars.hedgeroid.Datastructures.MapRecipe;

import org.hedgewars.hedgeroid.Datastructures.Scheme;

import org.hedgewars.hedgeroid.Datastructures.TeamInGame;

import org.hedgewars.hedgeroid.Datastructures.Weaponset;

/**

 * Common base implementation for a roomstate that will call listeners on every

 * change. The derived classes have to coordinate how state is changed to

 * complete the implementation of the RoomStateManager interface.

 *

 * See {@link RoomStateManager} for a description of what this is for.

 */

public abstract class BasicRoomState implements RoomStateManager {

    private final List<RoomStateManager.Listener> observers = new LinkedList<RoomStateManager.Listener>();

    private boolean chief;

    private String gameStyle;

    private Scheme scheme;

    private MapRecipe map;

    private Weaponset weaponset;

    private Map<String, TeamInGame> teams = Collections.emptyMap();

    public final MapRecipe getMapRecipe() {

        return map;

    }

    public final boolean getChiefStatus() {

        return chief;

    }

    public final Scheme getScheme() {

        return scheme;

    }

    public final String getGameStyle() {

        return gameStyle;

    }

    public final Weaponset getWeaponset() {

        return weaponset;

    }

    public final Map<String, TeamInGame> getTeams() {

        return teams;

    }

    public final void setWeaponset(Weaponset weaponset) {

        if(!equal(weaponset, this.weaponset)) {

            this.weaponset = weaponset;

            for(RoomStateManager.Listener observer : observers) {

                observer.onWeaponsetChanged(weaponset);

            }

        }

    }

    public final void setMapRecipe(MapRecipe map) {

        if(!equal(map, this.map)) {

            this.map = map;

            for(RoomStateManager.Listener observer : observers) {

                observer.onMapChanged(map);

            }

        }

    }

    public final void setGameStyle(String gameStyle) {

        if(!equal(gameStyle, this.gameStyle)) {

            this.gameStyle = gameStyle;

            for(RoomStateManager.Listener observer : observers) {

                observer.onGameStyleChanged(gameStyle);

            }

        }

    }

    public final void setScheme(Scheme scheme) {

        if(!equal(scheme, this.scheme)) {

            this.scheme = scheme;

            for(RoomStateManager.Listener observer : observers) {

                observer.onSchemeChanged(scheme);

            }

        }

    }

    public final void setChief(boolean chief) {

        if(chief != this.chief) {

            this.chief = chief;

            for(RoomStateManager.Listener observer : observers) {

                observer.onChiefStatusChanged(chief);

            }

        }

    }

    public final void putTeam(TeamInGame team) {

        TeamInGame oldEntry = teams.get(team.team.name);

        if(!equal(team, oldEntry)) {

            Map<String, TeamInGame> changedMap = new TreeMap<String, TeamInGame>(teams);

            changedMap.put(team.team.name, team);

            teams = Collections.unmodifiableMap(changedMap);

            for(RoomStateManager.Listener observer : observers) {

                observer.onTeamsChanged(teams);

            }

        }

    }

    public final void removeTeam(String teamname) {

        if(teams.containsKey(teamname)) {

            Map<String, TeamInGame> changedMap = new TreeMap<String, TeamInGame>(teams);

            changedMap.remove(teamname);

            teams = Collections.unmodifiableMap(changedMap);

            for(RoomStateManager.Listener observer : observers) {

                observer.onTeamsChanged(teams);

            }

        }

    }

    public final void setTeams(Map<String, TeamInGame> newTeams) {

        if(!newTeams.equals(teams)) {

            teams = Collections.unmodifiableMap(new TreeMap<String, TeamInGame>(newTeams));

            for(RoomStateManager.Listener observer : observers) {

                observer.onTeamsChanged(teams);

            }

        }

    }

    public final void addListener(Listener observer) {

        observers.add(observer);

    }

    public final void removeListener(Listener observer) {

        observers.remove(observer);

    }

}