import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;


// CS522 GUI for Simulation
// -------------------------
public class CS522App extends JFrame
{
	Color ColorRef[] = new Color[10];
	Graphics g = this.getGraphics();
	JPanel GraphArea = new JPanel(true);	// Shows graphed data
	JPanel YNumArea = new JPanel(true);		// Shows Y axis labels
	protected JLabel KeyLabel;			// Generic Label much used
	boolean SimPaused=false;			// If Sim Paused or not
	Simulator theSim;					// Simulator Object

	JTextField NSField,NCField,ESField,MSField,RFField;
  	JTextField PFField,CDField,SDField,DDField,OFField,RSField;
	JButton StartButton, PauseButton, EndButton, ResetButton;
	JTextArea OutputArea;

	public CS522App()
	{
		// Set up some Main Window Appearance Attributes
		Container contentPane = getContentPane();
		contentPane.setBackground(Color.lightGray);
        	GridBagLayout gridbag = new GridBagLayout();
        	GridBagConstraints c = new GridBagConstraints();
	  	contentPane.setLayout(gridbag);
	  	c.fill = GridBagConstraints.HORIZONTAL;
		this.setTitle("CS522 Server/Client Simulation");

		OutputArea = new JTextArea();
		JScrollPane scroll = new JScrollPane(OutputArea);
		scroll.setPreferredSize(new Dimension(500,250));
		scroll.setMinimumSize(new Dimension(500,250));
		scroll.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
		c.gridx = 5;
		c.gridy = 3;
		c.gridwidth = 6;
		c.gridheight = 15;
		gridbag.setConstraints(scroll,c);
		contentPane.add(scroll);
		c.gridwidth = 1;
		c.gridheight = 1;

		// Label above Text Fields
		KeyLabel = new JLabel("ENTER SIMULATION PARAMETERS");
		c.gridwidth = 2;
		c.gridx = 2;
		c.gridy = 1;
		gridbag.setConstraints(KeyLabel,c);
		contentPane.add(KeyLabel);
		c.gridwidth = 1;

		// Label above the Output
		KeyLabel = new JLabel("  SIMULATION OUTPUT WINDOW ");
		c.gridwidth = 3;
		c.gridx = 7;
		c.gridy = 1;
		gridbag.setConstraints(KeyLabel,c);
		contentPane.add(KeyLabel);
		c.gridwidth = 1;

		// Buttons on GUI
		StartButton = new JButton(" Start");
		PauseButton = new JButton(" Pause");
		EndButton   = new JButton("  End ");
		ResetButton = new JButton(" Reset");

		// Start Sim Button
		c.gridx = 6;
		c.gridy = 18;
		c.gridwidth = 1;
		gridbag.setConstraints(StartButton,c);
		contentPane.add(StartButton);
		c.gridwidth = 1;

		// Pause Sim Button
		c.gridx = 7;
		c.gridy = 18;
            //c.gridwidth = 2;
		gridbag.setConstraints(PauseButton,c);
		contentPane.add(PauseButton);
		//c.gridwidth = 1;

		// End Sim Button
		c.gridx = 8;
		c.gridy = 18;
		gridbag.setConstraints(EndButton,c);
		contentPane.add(EndButton);

		// Reset Sim Button
		c.gridx = 9;
		c.gridy = 18;
		gridbag.setConstraints(ResetButton,c);
		contentPane.add(ResetButton);

		// Spacer Label
		KeyLabel = new JLabel(" ");
		c.gridx = 1;
		c.gridy = 2;
		gridbag.setConstraints(KeyLabel,c);
		contentPane.add(KeyLabel);

		NCField = new JTextField(5);
		NSField = new JTextField(5);
		ESField = new JTextField(5);
		MSField = new JTextField(5);
		RFField = new JTextField(5);
		SDField = new JTextField(5);
		DDField = new JTextField(5);
		PFField = new JTextField(5);
		CDField = new JTextField(5);
		OFField = new JTextField(8);
                RSField = new JTextField(5);
		NCField.setText("" + 30);	// Number Clients
		NSField.setText("" + 2);	// Number Servers
		ESField.setText("" + 200);	// End of Simulation Time
		MSField.setText("" + 10000);   // Max File Size Field
		RFField.setText("" + 7);	// Request Frequency Modifier
		SDField.setText("" + 1);	// Server Delay
		DDField.setText("" + 1);	// Director Delay
		PFField.setText("" + 2000); // Server Response Speed KB/s
		CDField.setText("" + 8);      // Channel Speed
  		OFField.setText("CS522Out.txt");  // Output File Name
                RSField.setText(""+5);

		// Add Spacing Label
		c.gridx = 2;
		c.gridy = 17;
		KeyLabel = new JLabel("     ");
		gridbag.setConstraints(KeyLabel,c);
		contentPane.add(KeyLabel);

		// Add Label/Field to enter Number Clients
		c.gridx = 2;
		c.gridy = 6;
		KeyLabel = new JLabel("Number of Clients");
		gridbag.setConstraints(KeyLabel,c);
		contentPane.add(KeyLabel);
		c.gridx = 3;
		gridbag.setConstraints(NCField,c);
		contentPane.add(NCField);

		// Add Label/Field to enter Number Servers
		c.gridx = 2;
		c.gridy = 7;
		KeyLabel = new JLabel("Number of Servers");
		gridbag.setConstraints(KeyLabel,c);
		contentPane.add(KeyLabel);
		c.gridx = 3;
		gridbag.setConstraints(NSField,c);
		contentPane.add(NSField);

		// Add Label/Field to enter End of Simulation Time
		c.gridx = 2;
		c.gridy = 8;
		KeyLabel = new JLabel("End Simulation Time (s)");
		gridbag.setConstraints(KeyLabel,c);
		contentPane.add(KeyLabel);
		c.gridx = 3;
		gridbag.setConstraints(ESField,c);
		contentPane.add(ESField);

		// Add Label/Field to enter Max File Size
		c.gridx = 2;
		c.gridy = 9;
		KeyLabel = new JLabel("Max Filesize (KB)");
		gridbag.setConstraints(KeyLabel,c);
		contentPane.add(KeyLabel);
		c.gridx = 3;
		gridbag.setConstraints(MSField,c);
		contentPane.add(MSField);

		// Add Label/Field to enter Request Frequency
		c.gridx = 2;
		c.gridy = 10;
		KeyLabel = new JLabel("Request Multiplier (nx)");
		gridbag.setConstraints(KeyLabel,c);
		contentPane.add(KeyLabel);
		c.gridx = 3;
		gridbag.setConstraints(RFField,c);
		contentPane.add(RFField);

		// Add Label/Field to enter Request Separation
		c.gridx = 2;
		c.gridy = 11;
		KeyLabel = new JLabel("Min Request Spacing (s)");
		gridbag.setConstraints(KeyLabel,c);
		contentPane.add(KeyLabel);
		c.gridx = 3;
		gridbag.setConstraints(RSField,c);
		contentPane.add(RSField);

		// Add Label/Field to enter Server Delay
		c.gridx = 2;
		c.gridy = 12;
		KeyLabel = new JLabel("Server Xfer Delay (s)");
		gridbag.setConstraints(KeyLabel,c);
		contentPane.add(KeyLabel);
		c.gridx = 3;
		gridbag.setConstraints(SDField,c);
		contentPane.add(SDField);

		// Add Label/Field to enter Director Delay
		c.gridx = 2;
		c.gridy = 13;
		KeyLabel = new JLabel("Director Delay (s)");
		gridbag.setConstraints(KeyLabel,c);
		contentPane.add(KeyLabel);
		c.gridx = 3;
		gridbag.setConstraints(DDField,c);
		contentPane.add(DDField);

		// Add Label/Field to enter Max Channel Delay
		c.gridx = 2;
		c.gridy = 14;
		KeyLabel = new JLabel("Channel Speed (KB/s)");
		gridbag.setConstraints(KeyLabel,c);
		contentPane.add(KeyLabel);
		c.gridx = 3;
		gridbag.setConstraints(CDField,c);
		contentPane.add(CDField);

		// Add Label/Field to enter Server Speed
		c.gridx = 2;
		c.gridy = 15;
		KeyLabel = new JLabel("Server Response (KB/s)");
		gridbag.setConstraints(KeyLabel,c);
		contentPane.add(KeyLabel);
		c.gridx = 3;
		gridbag.setConstraints(PFField,c);
		contentPane.add(PFField);

		// Add Label/Field to enter File name
		c.gridx = 2;
		c.gridy = 16;
		KeyLabel = new JLabel("Output Filename");
		gridbag.setConstraints(KeyLabel,c);
		contentPane.add(KeyLabel);
		c.gridx = 3;
		gridbag.setConstraints(OFField,c);
		contentPane.add(OFField);

		StartButton.setEnabled(true);
		EndButton.setEnabled(false);
		PauseButton.setEnabled(false);

		// Action to perform when StartButton is pressed
		StartButton.addActionListener(new java.awt.event.ActionListener()
		{
			public void actionPerformed(ActionEvent e) {
				//OutputArea.setText(OutputArea.getText() + "YO DUDE");
				StartButtonPressed();
			} });


		// Action to perform when pause button hit
		PauseButton.addActionListener(new java.awt.event.ActionListener()
		{
			public void actionPerformed(ActionEvent e) {
				PauseButtonPressed();
			} });


		// Action to perform when hitting the end Button
		EndButton.addActionListener(new java.awt.event.ActionListener()
		{
			public void actionPerformed(ActionEvent e) {
				EndButtonPressed();
			} });

		// Action to perform when hitting the end Button
		ResetButton.addActionListener(new java.awt.event.ActionListener()
		{
			public void actionPerformed(ActionEvent e) {
				ResetButtonPressed();
			} });

	}


	// Start Button Pressed, create Simulator
	public void StartButtonPressed()
	{
		String p1;
		boolean p2;
		int p3,p4,p5,p6,p7,p8,p9,p10,p11,p12;

		p1 = OFField.getText().trim();
		p2 = true;
		p3 = (new Integer(NCField.getText().trim())).intValue();
		p4 = (new Integer(NSField.getText().trim())).intValue();
		p5 = (new Integer(ESField.getText().trim())).intValue();
		p6 = (new Integer(MSField.getText().trim())).intValue();
		p7 = (new Integer(SDField.getText().trim())).intValue();
		p8 = (new Integer(PFField.getText().trim())).intValue();
		p9 = (new Integer(RFField.getText().trim())).intValue();
		p10 = (new Integer(CDField.getText().trim())).intValue();
		p11 = (new Integer(DDField.getText().trim())).intValue();
	        p12 = (new Integer(RSField.getText().trim())).intValue();

		// Create the Simulator Object
		theSim = new Simulator(p1,p2,p3,p4,p5,p6,p7,p8,p9,
                                                   p10,p11,p12,this);

		EndButton.setEnabled(true);
	   	StartButton.setEnabled(false);
	   	PauseButton.setEnabled(true);
		ResetButton.setEnabled(false);
	   	NCField.setEnabled(false);
		NSField.setEnabled(false);
		OFField.setEnabled(false);
		ESField.setEnabled(false);
		MSField.setEnabled(false);
		SDField.setEnabled(false);
		PFField.setEnabled(false);
		RFField.setEnabled(false);
		CDField.setEnabled(false);
		DDField.setEnabled(false);
                RSField.setEnabled(false);
		theSim.startSim();
		theSim.start();
	}

	// ----------------------------------------------------
	// End Button Pressed by User.  End Simulation.
	// ----------------------------------------------------
	public void EndButtonPressed()
	{
		StartButton.setEnabled(false);
		EndButton.setEnabled(false);
		PauseButton.setEnabled(false);
		ResetButton.setEnabled(true);
		theSim.stopSim();
		theSim.stop();
		theSim.recap();
	}


    	// ---------------------------------------------------------------
    	// Pause Button pressed by user.  Suspend/Resume simulation thread
    	// ---------------------------------------------------------------
    	public void PauseButtonPressed()
    	{
	   if (SimPaused)
	   {
		SimPaused = false;
		theSim.startSim();
		PauseButton.setText(" PAUSE");
		theSim.resume();
	   }
	   else
	   {
	 	SimPaused = true;
		theSim.stopSim();
	      PauseButton.setText("RESUME");
		theSim.suspend();
	   }

    	}


    	// ---------------------------------------------------------------
	// Reset Button was Pressed
    	// ---------------------------------------------------------------
	public void ResetButtonPressed()
	{
		NCField.setText("" + 30);	// Number Clients
		NSField.setText("" + 2);	// Number Servers
		ESField.setText("" + 200);	// End of Simulation Time
		MSField.setText("" + 10000);// Max File Size Field KB
		RFField.setText("" + 7);	// Request Frequency Modifier
		SDField.setText("" + 1);	// Server Delay
		DDField.setText("" + 1);	// Director Delay
		PFField.setText("" + 2000); // Server Response Speed KB/s
		CDField.setText("" + 8);      // Channel Speed KB/s
		OFField.setText("CS522Out.txt");  // Output File Name
                RSField.setText("" + 5);
		OutputArea.setText(" ");
		NCField.setEnabled(true);
		NSField.setEnabled(true);
		OFField.setEnabled(true);
		ESField.setEnabled(true);
		MSField.setEnabled(true);
		SDField.setEnabled(true);
		PFField.setEnabled(true);
		RFField.setEnabled(true);
		CDField.setEnabled(true);
		DDField.setEnabled(true);
                RSField.setEnabled(true);
		ResetButton.setEnabled(true);
		StartButton.setEnabled(true);
		EndButton.setEnabled(false);
		PauseButton.setEnabled(false);
		SimPaused = false;
		PauseButton.setText(" PAUSE");
	}


	// Return the Area to Print to
	public JTextArea getOutputArea() { return this.OutputArea; }



	// Main Method
 	public static void main(String args[])
	{
		CS522App ex = new CS522App();


		ex.addWindowListener(new WindowAdapter() {
	  		public void windowClosing(WindowEvent e) { System.exit(0); }
	  		}
	  	);
		ex.setVisible(true);
		ex.pack();
	}
}