package com.liuyix.xmpp;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import org.jivesoftware.smack.Connection;
import org.jivesoftware.smack.PacketListener;
import org.jivesoftware.smack.RosterEntry;
import org.jivesoftware.smack.RosterListener;
import org.jivesoftware.smack.filter.PacketTypeFilter;
import org.jivesoftware.smack.packet.Packet;
import org.jivesoftware.smack.packet.Presence;
import org.jivesoftware.smack.packet.Presence.Type;
/*管理全局的所有的用户（包括自己）的Presence，
*功能：可以查询用户（including yourself）Presence
* 可以更新自己的状态信息
*
*
* */
public class PresenceManager implements PresenceListener{
private Connection connection;
private HashMap<String,Presence> contactPresences;
public static final String[] PRESENCE = new String[]{
"在线",
"离开",
"忙碌"
};
//存储着所有用户的Presence信息
//这应该属于RosterManager实现的内容，因为Presence都是联系人发出的。
// private Map<String,Presence> presences;
public PresenceManager(Connection conn) {
super();
if (conn == null || conn.isAuthenticated() != true) {
Util.printErrMsg("PresenceManager init ERROR:Connection ");
if (conn == null)
Util.showErrMsg("NULL");
else
Util.showErrMsg("NOT AUTH");
return;
}
// Connection已通过验证
this.connection = conn;
//TODO 添加一个监听端口，用于监听所有的Presence消息！
connection.addPacketListener(new AllPrensenceListener(), new PacketTypeFilter(Presence.class));
initContactPresences(connection.getRoster().getEntries());
// initPresences(connection.getRoster().getEntries());
}
private void initContactPresences(Collection<RosterEntry> collection) {
for(RosterEntry entry : collection){
updatePresence(null, entry.getName());
}
}
@Override
public void updatePresence(Presence presence, String username) {
//TODO 需要更新
if(contactPresences == null){
contactPresences = new HashMap<String,Presence>();
}
contactPresences.put(username, presence);
}
//监听所有的presence信息
private class AllPrensenceListener implements PacketListener {
@Override
public void processPacket(Packet packet) {
Presence presence = (Presence)packet;
Util.showPacketInfo("AllPresenceListener", packet);
updatePresence(presence, Util.getUsername(packet.getFrom()));
}
}
/**
* 返回指定用户(username)的Presence
* @param username 用户的username，而不是jid
* @return 若参数为空，返回Null;否则返回presence
* */
public Presence getPresence(String username) {
if(username == null)
return null;
else if(contactPresences.containsKey(username)){
Presence presence = contactPresences.get(username);
if(presence == null){
//TODO 全面更新Presence,不再返回原始的Presence,新建一个新的表达方式
return new Presence(Type.unavailable, null, -1, null);
}
else
return presence;
}else{
//该username不在联系人列表中
return null;
}
}
}