//インポート領域----------------------------------------------------------------

import javax.swing.*;
import java.awt.*;
import javax.swing.border.*;
import java.awt.event.*;
import java.net.*;
import java.io.*;
//-----------------------------------------------------------------------------
public class CC extends JFrame implements Runnable, ActionListener{
	public static void main(String[] args){
		
		CC frame = new CC();
		frame.setVisible(true);
		frame.setResizable(false);
	
	}
	 private Thread thread;
	 private Socket socket;
	 private String roomName;
	 private JTextArea msgTextArea;
	 private JTextField msgTextField;
	 private JTextField Name;
	 private JTextField ip;
	 private JTextField port;
	 private JButton submitButton;
	 private JButton howtouse;
	 private JButton enterButton;
	 private JButton exitButton;
	 
	CC(){//-------コンストラクタの定義-----------------------
		setBounds(100,100,506,580);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		addWindowListener(new WindowAdapter(){
			public void windowClosing(WindowEvent e){
				try{close();}
				catch(Exception err){}
			}
		});
		//パネルエリア----------------------------------------------------------
		JPanel toppanel =new JPanel();
			BevelBorder border0 = new BevelBorder(BevelBorder.RAISED);
			toppanel.setPreferredSize(new Dimension(500,35));
			toppanel.setBorder(border0);
			toppanel.setBackground(Color.DARK_GRAY);
		JPanel leftpanel = new JPanel();
			BevelBorder border1 = new BevelBorder(BevelBorder.RAISED);
			leftpanel.setPreferredSize(new Dimension(250,300));
			leftpanel.setBorder(border1);
			leftpanel.setBackground(Color.GREEN);
		JPanel rightpanel = new JPanel();
			BevelBorder border2 = new BevelBorder(BevelBorder.RAISED);
			rightpanel.setPreferredSize(new Dimension(250,200));
			rightpanel.setBorder(border2);
			rightpanel.setBackground(Color.BLUE);
		JPanel buttompanel = new JPanel();
			BevelBorder border3 = new BevelBorder(BevelBorder.RAISED);
			buttompanel.setPreferredSize(new Dimension(500,45));
			buttompanel.setBorder(border3);
			buttompanel.setBackground(Color.DARK_GRAY);
		//ラベルエリア（パネル1）-----------------------------------------------
		JLabel label1 = new JLabel(" Chat Client ");
			label1.setFont(new Font("Century",Font.BOLD,20));
			label1.setPreferredSize(new Dimension(250,30));
			label1.setHorizontalAlignment(JLabel.CENTER);
		JLabel label2 = new JLabel("■ Chat Area");
			label2.setFont(new Font("Century",0,18));
			label2.setPreferredSize(new Dimension(250,25));
			label2.setHorizontalAlignment(JLabel.CENTER);
		JLabel label2_1 = new JLabel("   ■ Message");
			label2_1.setPreferredSize(new Dimension(250,20));
			label2_1.setHorizontalAlignment(JLabel.LEFT);
		 msgTextArea = new JTextArea(20,20);
			msgTextArea.setBorder(new LineBorder(Color.gray,4,false));
			msgTextArea.setLineWrap(true);
			msgTextArea.setEditable(false);
			JScrollPane scrollpane1 = new JScrollPane(msgTextArea);
		 msgTextField = new JTextField(15);
		 submitButton = new JButton("送信");
		 submitButton.addActionListener(this);
		 submitButton.setActionCommand("submit");
		//ラベルエリア（パネル2）-----------------------------------------------
		JLabel label3 = new JLabel("■ Client Name");
			label3.setPreferredSize(new Dimension(250,25));
			label3.setHorizontalAlignment(JLabel.CENTER);
			label3.setFont(new Font("Century",0,15));
			label3.setForeground(Color.white);
		Name = new JTextField(15);
			Name.setPreferredSize(new Dimension(250,25));
		JLabel label4 = new JLabel("■ Surver IP Address");
			label4.setPreferredSize(new Dimension(250,25));
			label4.setHorizontalAlignment(JLabel.CENTER);
			label4.setFont(new Font("Century",0,15));
			label4.setForeground(Color.white);
		ip = new JTextField(15);
			ip.setPreferredSize(new Dimension(250,25));
		JLabel label5 = new JLabel("■ Port Number");
			label5.setPreferredSize(new Dimension(250,25));
			label5.setHorizontalAlignment(JLabel.CENTER);
			label5.setFont(new Font("Century",0,15));
			label5.setForeground(Color.white);
		port = new JTextField(15);
			port.setPreferredSize(new Dimension(250,25));
		ImageIcon icon = new ImageIcon("cat.png");
		JLabel label6 = new JLabel(icon);
			label6.setPreferredSize(new Dimension(250,238));
		howtouse = new JButton("How to use");
		howtouse.addActionListener(this);
		howtouse.setActionCommand("howto");
		//ラベルエリア（パネル3）-----------------------------------------------
		enterButton = new JButton("入室");
		enterButton.addActionListener(this);
		enterButton.setActionCommand("enter");
		exitButton = new JButton("退室"); 
		exitButton.addActionListener(this);
		exitButton.setActionCommand("exit");
		//ラベルをパネル1に接続-------------------------------------------------
		leftpanel.add(label1,BorderLayout.NORTH);
		leftpanel.add(label2,BorderLayout.NORTH);
		leftpanel.add(scrollpane1,BorderLayout.CENTER);
		leftpanel.add(label2_1,BorderLayout.SOUTH);
		leftpanel.add(msgTextField,BorderLayout.SOUTH);
		leftpanel.add(submitButton);
		//ラベルをパネル2に接続-------------------------------------------------
		rightpanel.add(label3,BorderLayout.NORTH);
		rightpanel.add(Name,BorderLayout.NORTH);
		rightpanel.add(label4,BorderLayout.NORTH);
		rightpanel.add(ip,BorderLayout.NORTH);
		rightpanel.add(label5,BorderLayout.NORTH);
		rightpanel.add(port,BorderLayout.NORTH);
		rightpanel.add(label6,BorderLayout.SOUTH);
		rightpanel.add(howtouse,BorderLayout.SOUTH);
		//ラベルをパネル3に接続-------------------------------------------------
		buttompanel.add(enterButton,BorderLayout.CENTER);
		buttompanel.add(exitButton,BorderLayout.CENTER);
		//パネルをフレームに接続------------------------------------------------
		Container contentPane = getContentPane();
		contentPane.add(toppanel,BorderLayout.NORTH);
		contentPane.add(leftpanel,BorderLayout.WEST);
		contentPane.add(rightpanel,BorderLayout.EAST);
		contentPane.add(buttompanel,BorderLayout.SOUTH);
		//----------------------------------------------------------------------
		thread = new Thread(this);
		
		exitedRoom("ChatClient_out");//コンストラクタ起動時にコンポーネントを退室状態へ
	}
	//サーバーへの接続メソッド（ソケット作成）---------------
	public void connectServer(){
		try{
			socket = new Socket( ip.getText() , Integer.parseInt(port.getText()) );
			msgTextArea.append(">サーバーに接続しました\n");
			thread.start();
		}
		catch(Exception err){
			msgTextArea.append("ERROR0>" + err + "\n");
		}
	}
	//サーバーとの接続を解除---------------------------------
	public void close() throws IOException{
		send("close");
		socket.close();
	}
	//サーバーにメッセージを送信-----------------------------
	public void send(String msg){
		try{
			OutputStream output = socket.getOutputStream();
			PrintWriter writer = new PrintWriter(output);
			
			writer.println(msg);
			writer.flush();
		}
		catch(Exception err){ msgTextArea.append("ERROR1>" + err + "\n"); }
	}
	//受信受付スレッド---------------------------------------
	public void run(){
		try {
			InputStream input = socket.getInputStream();
			BufferedReader reader = new BufferedReader(new InputStreamReader(input));
			while(!socket.isClosed()){
				String line = reader.readLine();
				String[] msg = line.split(" ",2);
				String msgflag = msg[0];
				String msgValue = (msg.length < 2 ? "" : msg[1]);
				reached(msgflag,msgValue);
			}
		}
		catch(Exception err){}
	}
	public void reached(String flag,String value){
		//相手が退室した場合flag=closeがvalue=""がサーバーから送られてくる
		if(flag.equals("close")){
			if(value.equals("")){
				msgTextArea.append("相手が退室しました\n");
			}
		}
		//相手が送信ボタンを押すと内容が、入室、退室ボタンを押すとその状況が送られてくる
		else if(flag.equals("msg")){
			msgTextArea.append(value + "\n");
		}
	}
	//ボタンコマンドの処理-----------------------------------
	public void actionPerformed(ActionEvent e){
		String command = e.getActionCommand();
		if(command.equals("submit")){
			send("msg " + Name.getText() + ">>" +msgTextField.getText());//msgの後に半角のスペース
			msgTextField.setText("");
		}
		else if(command.equals("enter")){
			connectServer();
			enteredRoom("ChatClient_in");
			send("msg " + Name.getText() + "さんが入室しました\n");
		}
		else if(command.equals("exit")){
			send("msg " + Name.getText() + "さんが退室しました\n");
			exitedRoom("ChatClient_out");
			try{close();}
			catch(Exception err){}
		}
		else if(command.equals("howto")){
			try{
				Runtime rt = Runtime.getRuntime();
				rt.exec("explorer http://www.rs.kagu.tus.ac.jp/yamalab/2013/suzuki/tcp.html");
			}catch(IOException ex){
			ex.printStackTrace();
			}
		}
	}
	//入室状態------------------------------
	private void enteredRoom(String roomName){
		this.roomName = roomName;
		setTitle(roomName);
		msgTextField.setEditable(true);
		submitButton.setEnabled(true);
		enterButton.setEnabled(false);
		exitButton.setEnabled(true);
	}
	//退室状態------------------------------
	private void exitedRoom(String roomName){
		this.roomName = roomName;
		setTitle(roomName);
		msgTextField.setEditable(false);
		submitButton.setEnabled(false);
		exitButton.setEnabled(false);
	}
}