package chatServer;
import chatServer.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import java.net.*;
import chatServer.*;
import javax.swing.tree.*;
public class ChatServer extends WindowAdapter implements ActionListener,Runnable {
     private JFrame f = null;
     private JPanel p1 = null;
     private JButton button_start = null;
     private JPanel p2 = null;
     private JTree tree = null;
     private DefaultTreeModel treeModel=null;
     private DefaultMutableTreeNode root=null;
     private JLabel revMsgLabel;
     private JPanel p3 = null;
     public JTextArea revMsg = null;//public for ServerThread
     private JButton button_clear = null;
     private BorderLayout borderLayout1 = new BorderLayout();
     private BorderLayout borderLayout2 = new BorderLayout();
     private BorderLayout borderLayout3 = new BorderLayout();

     private ServerSocket ss;
     private Socket sock;
     private DataInputStream in;
     private DataOutputStream dout;
     private UsrContainer usrList;
     public ChatServer(Socket sock)
     {
         this.sock=sock;
     }

    public ChatServer()
    {
        usrList=new UsrContainer();

         f = new JFrame("ChatServer");
         Container contentPane = f.getContentPane();
         f.setSize(600, 500);
         contentPane.setLayout(borderLayout1);

         p1 = new JPanel();
         button_start = new JButton("Start Server");
         //button_start.setPreferredSize(new Dimension(60, 30));
         button_start.addActionListener(this);
         p1.add(button_start);
         f.add(p1, borderLayout1.NORTH);

         p2 = new JPanel();
        p2.setSize(100, 400);
        root = new DefaultMutableTreeNode("User List");
        tree = new JTree(root);
        treeModel=(DefaultTreeModel)tree.getModel();
        JScrollPane scrollPane=new JScrollPane();
        scrollPane.setViewportView(tree);
        scrollPane.setPreferredSize(new Dimension(300, 768));
        p2.add(scrollPane);
        f.add(p2, borderLayout1.WEST);


         p3 = new JPanel();

         revMsg = new JTextArea();
         revMsg.setLineWrap(true);
         JScrollPane revScrollPane = new JScrollPane(revMsg);
         revMsg.setEditable(false);
         button_clear = new JButton("clear");
         button_clear.addActionListener(this);


         JPanel p_3_1 = new JPanel();
        revMsgLabel = new JLabel("消息列表:");
        p_3_1.setLayout(borderLayout2);
        p_3_1.add(revMsgLabel, borderLayout2.NORTH);
        p_3_1.add(button_clear, borderLayout2.SOUTH);
        p_3_1.add(revScrollPane, borderLayout2.CENTER);



         f.add(p_3_1, borderLayout1.CENTER);

         f.show();
         f.addWindowListener(this);


    }

    private void listen( int port ) throws IOException {

    // Create the ServerSocket
    ss = new ServerSocket( port );

    // Keep accepting connections forever
    while (true) {

      // Grab the next incoming connection
      Socket s = ss.accept();

      revMsg.setText( revMsg.getText()+"\n"+"Connection from "+s );

      DataInputStream tmpin = new DataInputStream( s.getInputStream() );
      // Create a DataInputStream for writing usrNick come
      String usrNick = tmpin.readUTF();


      // Create a DataOutputStream for writing data to the
      // other side
      DataOutputStream dout = new DataOutputStream( s.getOutputStream() );

      // Save this stream so we don't need to make it again
      UserInfo usr=new UserInfo(usrNick,s,dout);
      usrList.addUser(usr);
      revMsg.setText( revMsg.getText()+"\n"+usrList.getUsrNum() );


      // Create a new thread for this connection, and then forget
      // about it
      new ServerThread( this,s).start();
      updateUsrList();
    }
  }


   public void actionPerformed(ActionEvent e)
   {
       if(e.getSource()==button_start)
        {
            if(button_start.getText().equals("Start Server"))
            {
                new Thread(this).start();
            }
        }

   }
   public void run()
   {
       try{
             listen(10000);
      }
      catch( IOException ie )
      {
        revMsg.setText( revMsg.getText()+"\n"+ie.toString());
      }

   }
   public void sendToAll(String message)
   {
       int i=0;
       for(i=0;i<usrList.getUsrNum();i++)
       {
           try{
               usrList.getUsr(i).sendToUsr(message);
           }
           catch( IOException ie )
           {
               revMsg.setText( revMsg.getText()+"\n"+"Sending "+message);
           }

       }
   }
   public void removeConnection(Socket socket)
   {

       try
       {
           UserInfo tmp = new UserInfo(socket);
           usrList.delUser(tmp);
           socket.close();
           updateUsrList();
       }
       catch(IOException ie)
       {
           revMsg.setText(revMsg.getText()+"\n"+ie.toString());
       }

   }

   public void updateUsrList()
  {
      root.removeAllChildren();
      treeModel.reload();
      String strSend=null;
      int usrNum=usrList.getUsrNum();
      if(usrNum<10)
         strSend=""+1+0+usrNum;
      else
          strSend=""+1+usrNum;
      int i=0;
      for(i=0;i<usrNum;i++)
      {
          String nodeStr=usrList.getUsr(i).getNickAndIP();
          DefaultMutableTreeNode newNode=new DefaultMutableTreeNode(nodeStr);
          treeModel.insertNodeInto(newNode,root,root.getChildCount());
          tree.scrollPathToVisible(new TreePath(newNode.getPath()));
          strSend+=usrList.getUsr(i).getNick().length()+usrList.getUsr(i).getNick();
          String tmpIP=usrList.getUsr(i).getIP();
          int tmpIPlen=tmpIP.length();
          if(tmpIPlen<10)
              strSend+="0"+tmpIPlen+tmpIP;
          else
              strSend+=tmpIPlen+tmpIP;

      }
      this.sendToAll(strSend);



  }


   public static void main(String[] args) {
        ChatServer chatclient = new ChatServer();
    }


}