//package rep;
package test;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.charset.CharacterCodingException;
import java.nio.charset.Charset;
import java.nio.charset.CharsetDecoder;
import java.nio.charset.CharsetEncoder;

import rep.REP;
import rep.REPCommand;


//import remoteeditor.command.REPCommand;

public class TestUTF8 {
	
	public static ByteBuffer pack(REPCommand command){
		//command.setString(command.string + ":temp:123456");	//あとで書き直す
    	System.out.println("send command: " + command.toString());
    	ByteBuffer buffer = ByteBuffer.allocateDirect(24+(command.string).length()*2);
    	buffer.clear();  // position = 0 
    	buffer.putInt(command.cmd); buffer.putInt(command.sid); buffer.putInt(command.eid);
    	buffer.putInt(command.seq); buffer.putInt(command.lineno); 
    	buffer.putInt(command.string.length()*2); 
    	for(int i=0;i<command.string.length();i++) {
			buffer.putChar(command.string.charAt(i));
		}	
    	buffer.flip();    // limit = current position, position = 0
		return buffer;
	}
	
	public static ByteBuffer packUConv(REPCommand command){		
		//command.setString(command.string + ":temp:123456");	//あとで書き直す
    	System.out.println("send command byUTF8: " + command.toString());    	
    	ByteBuffer buffer = ByteBuffer.allocateDirect(24+(command.string).length()*5);
    	buffer.clear();  // position = 0 
    	buffer.putInt(command.cmd); buffer.putInt(command.sid); buffer.putInt(command.eid);
    	buffer.putInt(command.seq); buffer.putInt(command.lineno); 
    	//buffer.putInt(command.string.length()*2);     	
    	

    	int pos = buffer.position();
    	buffer.putInt(0);     	
    	
    	/*for(int i=0;i<command.string.length();i++) {
			buffer.putChar(command.string.charAt(i));
		}*/	
    	//buffer.position(pos);    // limit = current position, position = 0

    	//Encode to UTF8
    	//CharBuffer cb = buffer.asCharBuffer();    	
    	CharBuffer cb = CharBuffer.wrap(command.string);
    	
		Charset charset = Charset.forName("UTF-8");
		CharsetEncoder encoder = charset.newEncoder();
		//try {
		encoder.encode(cb, buffer, false);
		/*} catch (CharacterCodingException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}*/
		//byte[] outdata	= tmpbuffer.array();
		
		buffer.putInt(pos, (buffer.position()-pos-4));
		buffer.rewind();
		
		return buffer;    	
	}
	
	
	public static void unpack_check(ByteBuffer buffer) {
		final int HEADER_SIZE = 24;
		String text = "";
		int cmd = buffer.getInt();
		int sid = buffer.getInt();
		int eid = buffer.getInt();
		int seqid = buffer.getInt();
		int lineno = buffer.getInt();
		int textsiz = buffer.getInt();
		System.out.println("textsiz:" +textsiz);
		//CharBuffer cb = buffer.asCharBuffer();
		/*for(int i=0;i<textsiz;i++) {
			text +=buffer.getChar();
		}*/
		//CharBuffer cb = CharBuffer.allocate(textsiz);
		//CharBuffer cb = buffer.asCharBuffer();
		Charset charset1 = Charset.forName("UTF-8");
		CharsetDecoder decoder = charset1.newDecoder();
		CharBuffer cb = null;
		try {
			cb = decoder.decode(buffer);
		} catch (CharacterCodingException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
			
		System.out.println("cb siz:" +cb.length());
		//cb.flip();
		//String string = text;
		System.out.println(cb.toString());
		//getSocket(string);
		//REPCommand repcommand = new REPCommand(cmd, sid, eid, seqid, lineno, textsiz, string);
		//System.out.println("received command: " + repcommand.toString());
		//getSocket(repcommand);
		//System.out.println("received command: " + repcommand.toString());
		//return repcommand;
	}
	
	public static void main(String[] args) throws IOException{
		String text = "あおいえおかきくけこ";
		REP rep;
		REPCommand utf8buf = new REPCommand(0, 0, 0, 0, 0, 0, text);
	    REPCommand buf = new REPCommand(0, 0, 0, 0, 0, 0, text);
	    ByteBuffer buf1,buf2;

	    buf1 = pack(buf);
	    buf2 = packUConv(utf8buf);
	   	    
	    System.out.println("Encode TEST1.");
		System.out.println("Plane ByteBuffer :" +buf1.toString());
		System.out.println("Plane ByteBuffer length :" +buf1.capacity());		

		System.out.println("UTF-8 Encoded byteBuffer :" +buf2.toString());
		System.out.println("UTF-8 Encoded text length :" +buf2.capacity());

		//unpack_check(buf1);
		unpack_check(buf2);
	}
}