buddylist.java

冒险岛私服Java版服务端(Odinms)源代码。学习JAVA开发的朋友

/*
	This file is part of the OdinMS Maple Story Server
    Copyright (C) 2008 Patrick Huy <[e-mail]> 
                       Matthias Butz <[e-mail]>
                       Jan Christian Meyer <[e-mail]>

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License version 3
    as published by the Free Software Foundation. You may not use, modify
    or distribute this program under any other version of the
    GNU Affero General Public License.

    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 Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

package net.sf.odinms.client;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Collection;
import java.util.Deque;
import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.Map;

import net.sf.odinms.database.DatabaseConnection;
import net.sf.odinms.tools.MaplePacketCreator;

public class BuddyList {
	public enum BuddyOperation {
		ADDED, DELETED
	}
	public enum BuddyAddResult {
		BUDDYLIST_FULL, ALREADY_ON_LIST, OK
	}
	
	private Map<Integer, BuddylistEntry> buddies = new LinkedHashMap<Integer, BuddylistEntry>();
	private int capacity;
	private Deque<CharacterNameAndId> pendingRequests = new LinkedList<CharacterNameAndId>();
	
	public BuddyList(int capacity) {
		super();
		this.capacity = capacity;
	}

	public boolean contains(int characterId) {
		return buddies.containsKey(Integer.valueOf(characterId));
	}
	
	public boolean containsVisible(int characterId) {
		BuddylistEntry ble = buddies.get(characterId);
		if (ble == null) {
			return false;
		}
		return ble.isVisible();
	}
	
	public int getCapacity() {
		return capacity;
	}

	public void setCapacity(int capacity) {
		this.capacity = capacity;
	}

	public BuddylistEntry get(int characterId) {
		return buddies.get(Integer.valueOf(characterId));
	}
	
	public BuddylistEntry get(String characterName) {
		String lowerCaseName = characterName.toLowerCase();
		for (BuddylistEntry ble : buddies.values()) {
			if (ble.getName().toLowerCase().equals(lowerCaseName)) {
				return ble;
			}
		}
		return null;
	}
	
	public void put (BuddylistEntry entry) {
		buddies.put(Integer.valueOf(entry.getCharacterId()), entry);
	}
	
	public void remove (int characterId) {
		buddies.remove(Integer.valueOf(characterId));
	}
	
	public Collection<BuddylistEntry> getBuddies() {
		return buddies.values();
	}
	
	public boolean isFull() {
		return buddies.size() >= capacity;
	}

	public int[] getBuddyIds() {
		int buddyIds[] = new int[buddies.size()];
		int i = 0;
		for (BuddylistEntry ble : buddies.values()) {
			buddyIds[i++] = ble.getCharacterId();
		}
		return buddyIds;
	}
	
	public void loadFromDb(int characterId) throws SQLException {
		Connection con = DatabaseConnection.getConnection();
		PreparedStatement ps = con.prepareStatement("SELECT b.buddyid, b.pending, c.name as buddyname FROM buddies as b, characters as c WHERE c.id = b.buddyid AND b.characterid = ?");
		ps.setInt(1, characterId);
		ResultSet rs = ps.executeQuery();
		while (rs.next()) {
			if (rs.getInt("pending") == 1) {
				pendingRequests.push(new CharacterNameAndId(rs.getInt("buddyid"), rs.getString("buddyname")));
			} else {
				put(new BuddylistEntry(rs.getString("buddyname"), rs.getInt("buddyid"), -1, true));
			}
		}
		rs.close();
		ps.close();
		
		ps = con.prepareStatement("DELETE FROM buddies WHERE pending = 1 AND characterid = ?");
		ps.setInt(1, characterId);
		ps.executeUpdate();
		ps.close();
	}
	
	public CharacterNameAndId pollPendingRequest() {
		return pendingRequests.pollLast();
	}
	
	public void addBuddyRequest(MapleClient c, int cidFrom, String nameFrom, int channelFrom) {
		put(new BuddylistEntry(nameFrom, cidFrom, channelFrom, false));
		if (pendingRequests.isEmpty()) {
			c.getSession().write(MaplePacketCreator.requestBuddylistAdd(cidFrom, nameFrom));
		} else {
			pendingRequests.push(new CharacterNameAndId(cidFrom, nameFrom));
		}
	}
}