/*
* LumaQQ - Java QQ Client
*
* Copyright (C) 2004 luma <stubma@163.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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package edu.tsinghua.lumaqq.qq.packets.out;

import java.nio.ByteBuffer;

import edu.tsinghua.lumaqq.qq.PacketParseException;
import edu.tsinghua.lumaqq.qq.QQ;
import edu.tsinghua.lumaqq.qq.Utils;
import edu.tsinghua.lumaqq.qq.packets.OutPacket;

/**
 * <pre>
 * 搜索在線用戶的包，格式為
 * 1. 頭部
 * 2. 1個字節，表示搜索類型，比如搜索全部在線用戶是0x31，自定義搜索是0x30
 * 3. 1字節分隔符: 0x1F
 * 4. 搜索參數
 * 	  i.  對于搜索全部在線用戶的請求，是一個頁號，用字符串表示，從0開始
 *    ii. 對于自定義搜索類型，是3個域，用0x1F分隔，依次是
 * 		   a. 要搜索的用戶的QQ號的字符串形式
 * 		   b. 要搜索的用戶的昵稱
 * 		   c. 要搜索的用戶的email
 * 		   另外QQ還有一個匹配整個字符串的選項，如果這個選擇被選中，那就是如上所說的格式，如果
 *         沒有被選中，那就會在b和c之后各加一個'%'字符，也就是0x25。在abc之后，還跟一個分隔符，
 * 		   然后是頁號的字符串形式，以0結束。另外，如果用戶沒有提供某個參數，則用0x2D替代，也就是
 * 		   '-'字符 
 * 5. 尾部
 * </pre> 
 * 
 * @author 馬若劼
 */
public class SearchUserPacket extends OutPacket {
	private byte searchType;
	private String page;
	private String qqStr;
	private String nick;
	private String email;
	private boolean matchEntireString;
	
	/** 分隔符 */
	private static final byte DELIMIT = 0x1F;
	/** 如果字段為空，用0x2D替代，即'-'字符 */
	private static final byte NULL = 0x2D;
	/** 通配府，即'%'字符 */
	private static final byte PERCENT = 0x25;
	
    /**
     * 構造函數
     */
    public SearchUserPacket() {
        super(QQ.QQ_CMD_SEARCH_USER, true);
		page = "0";
		searchType = QQ.QQ_SEARCH_ALL;
		qqStr = nick = email = "";
		matchEntireString = false;
    }
	
    /**
     * @param buf
     * @param length
     * @throws PacketParseException
     */
    public SearchUserPacket(ByteBuffer buf, int length)
            throws PacketParseException {
        super(buf, length);
    }
    
    /* (non-Javadoc)
     * @see edu.tsinghua.lumaqq.qq.packets.OutPacket#putBody(java.nio.ByteBuffer)
     */
    protected void putBody(ByteBuffer buf) {
		// 開始組裝內容
		if(searchType == QQ.QQ_SEARCH_ALL) {
			buf.put(searchType);
			buf.put(DELIMIT);
			buf.put(page.getBytes());				
		} else if(searchType == QQ.QQ_SEARCH_CUSTOM) {
			buf.put(searchType);
			buf.put(DELIMIT);
			// QQ號
			if(qqStr == null || qqStr.equals("")) buf.put(NULL);
			else buf.put(qqStr.getBytes());
			buf.put(DELIMIT);			
			// 昵稱
			if(nick == null || nick.equals("")) buf.put(NULL);
			else {
				buf.put(Utils.getBytes(nick, QQ.QQ_CHARSET_DEFAULT));
				if(!matchEntireString)
					buf.put(PERCENT);
			}
			buf.put(DELIMIT);			
			// email
			if(email == null || email.equals("")) buf.put(NULL);
			else {
				buf.put(email.getBytes());
				if(!matchEntireString)
				    buf.put(PERCENT);
			}
			buf.put(DELIMIT);	
			// 結尾
			buf.put(page.getBytes());
			buf.put((byte)0x0);
		}
    }
    
    /* (non-Javadoc)
     * @see edu.tsinghua.lumaqq.qq.packets.OutPacket#parseBody(java.nio.ByteBuffer)
     */
    protected void parseBody(ByteBuffer buf) throws PacketParseException {
        searchType = buf.get();
        if(searchType == QQ.QQ_SEARCH_ALL) {
            buf.get();
            page = Utils.getString(buf);
        } else if(searchType == QQ.QQ_SEARCH_CUSTOM) {
            buf.get();
            matchEntireString = false;
            qqStr = Utils.getString(buf, DELIMIT);            
            nick = Utils.getString(buf, DELIMIT);
            if(nick.charAt(nick.length()) == PERCENT) {
                nick = nick.substring(0, nick.length() - 1);
                matchEntireString = true;
            }
            email = Utils.getString(buf, DELIMIT);
            if(email.charAt(email.length()) == PERCENT) {
                email = email.substring(0, email.length() - 1);
                matchEntireString = true;
            }
            page = Utils.getString(buf, 0);
        }
    }
	
	/**
	 * @param page The page to set.
	 */
	public void setPage(int page) {
		this.page = String.valueOf(page);
	}
	
	/**
	 * @param searchType The searchType to set.
	 */
	public void setSearchType(byte searchType) {
		this.searchType = searchType;
	}
	
	/**
	 * @param matchEntireString The matchEntireString to set.
	 */
	public void setMatchEntireString(boolean matchEntireString) {
		this.matchEntireString = matchEntireString;
	}
	
	/**
	 * @param nick The nick to set.
	 */
	public void setNick(String nick) {
		this.nick = nick;
	}
	
	/**
	 * @param qqNum The qqNum to set.
	 */
	public void setQQStr(int qqNum) {
		this.qqStr = String.valueOf(qqNum);
	}
	
	/**
	 * @param qqStr
	 */
	public void setQQStr(String qqStr) {
		this.qqStr = qqStr;
	}
	
	/**
	 * @param email The email to set.
	 */
	public void setEmail(String email) {
		this.email = email;
	}
}