package com.j2medev.chapter9;

import java.io.DataInputStream;
import java.io.IOException;
import javax.microedition.io.Connection;
import javax.microedition.io.Connector;
import javax.microedition.lcdui.*;
import javax.obex.*;

public class OBEXServer extends ServerRequestHandler implements Runnable,CommandListener{
    
    private OBEXMIDlet midlet = null;
    private SessionNotifier server = null;
    private Form form = null;
    private Command cancelCommand = new Command("cancel",Command.BACK,1);
    private boolean closed = false;
    
    public OBEXServer(OBEXMIDlet _midlet) {
        midlet = _midlet;
        form = new Form("server");
        form.addCommand(cancelCommand);
        form.setCommandListener(this);
        midlet.setCurrent(form);
    }
    
    public void run() {
        //啟動服務器，監聽端口5000
        try {
            server = (SessionNotifier)Connector.open("tcpobex://:5000");
        } catch (IOException ex) {
            ex.printStackTrace();
            return;
        }
        form.append("server has been started,waiting for client session....");
        while(!closed){
            try {
                //等待客戶端連接
                Connection conn = server.acceptAndOpen(this);
            } catch (IOException ex) {
                ex.printStackTrace();
            }
        }
    }
    
    public void commandAction(Command command, Displayable displayable) {
        if(command == cancelCommand){
            //關閉服務器，并返回。
            closed = true;
            try {
                server.close();
                server = null;
            } catch (IOException ex) {
                ex.printStackTrace();
            }
            midlet.show();
        }
    }
    //響應客戶端的PUT操作
    public int onPut(Operation op){
        try {
            HeaderSet header = op.getReceivedHeaders();
            System.out.println(header.getHeader(HeaderSet.LENGTH).toString());
            //接收Account對象，并顯示在Form上
            DataInputStream dis = op.openDataInputStream();
            String user = dis.readUTF();
            form.append("username="+user+"\n");
            String pass = dis.readUTF();
            form.append("password="+pass+"\n");
            //關閉
            dis.close();
            op.close();
        } catch (IOException ex) {
            ex.printStackTrace();
            //出錯
            return ResponseCodes.OBEX_HTTP_INTERNAL_ERROR;
        }
        return ResponseCodes.OBEX_HTTP_OK;
    }
    //連接成功
    public int onConnect(HeaderSet request, HeaderSet reply) {
        return ResponseCodes.OBEX_HTTP_OK;
    }
}