package COM.xinit.demon.co.uk.3tier.tradertool;

import java.awt.*;
import database.*;
import msql.*;

/**
  A Panel to display the current market status.
 */

public class MarketList extends Panel {

    private static final boolean	dbVersion = false; // Only effects standalone main

    private List		ul = null;
    private Label		title = null;
    private Label		lNum = null;
    private TextField	tfNum = null;
    private	DBAccess	db = null;
    private String		ssn = null;



    /**
	 Test driver. (Stop program using CTRL-c).
	 */

    public static void main(String argc[]) {

	    Frame f = new Frame("Test Market") {

		public boolean handleEvent(Event e) {
		switch (e.id) {
		    case Event.WINDOW_DESTROY:
			System.exit(0);
			break;
		}
		return super.handleEvent(e);
	    }
	};


	MarketList	m = null;

	Database	db = null;

	if (dbVersion) {
	    if (argc.length != 1) {
		    System.out.println("Usage is: java PortfolioList server");
		    System.exit(0);
	    }

	    try {
		    db = new Database(argc[0]);
	    } catch ( MsqlException e ) {
		    System.out.println(e + "Non-existant server " + argc[0]);
		    System.exit(0);
	    }

	    
	    m = new MarketList(db, 10);
	}
	else 
	{

	    dbProxy	prtcl = null;

	    if (argc.length != 1) {
		    System.out.println("Usage is: java PortfolioList server");
		    System.exit(0);
	    }

	    prtcl = new dbProxy(argc[0], 5500);


	    m = new MarketList(prtcl, 10);
	}

	m.setCustomer("999-11-2222");

	f.setLayout(new FlowLayout());
	f.add(m);
	f.pack();
	f.show();

    }



    /**
    Creates a new MarketList
    @param nRow the number of row to display
    */

    public MarketList(DBAccess dba, int nRow) {

	super();

	db = dba;

	ul = new List(nRow);
	updateList();

	title = new Label(StockRec.getTitle() + "            "); // Second string is to pad the width
	lNum = new Label("Number to buy: ");
	tfNum = new TextField("1");


	// Set the fonts
	ul.setFont(new Font("Monospaced", Font.PLAIN, 12));
	title.setFont(new Font("Monospaced", Font.PLAIN, 12));
	lNum.setFont(new Font("Monospaced", Font.PLAIN, 12));
	tfNum.setFont(new Font("Monospaced", Font.PLAIN, 12));

	// Layout on screen

	GridBagLayout		gbl = new GridBagLayout();
	GridBagConstraints	cstr = new GridBagConstraints();

	this.setLayout(gbl);

	cstr.anchor = GridBagConstraints.WEST;
	cstr.fill = GridBagConstraints.BOTH;
	cstr.gridwidth = GridBagConstraints.REMAINDER;
	cstr.ipadx = 10;
	gbl.setConstraints(title, cstr);
	this.add(title);

	cstr.gridwidth = GridBagConstraints.REMAINDER;
	cstr.ipadx = 0;
	gbl.setConstraints(ul, cstr);
	this.add(ul);


	cstr.gridwidth = 1;
	cstr.anchor = GridBagConstraints.WEST;
	gbl.setConstraints(lNum, cstr);
	this.add(lNum);

	cstr.gridwidth = 1;
	cstr.anchor = GridBagConstraints.EAST;
	gbl.setConstraints(tfNum, cstr);
	this.add(tfNum);

	this.validate();
    }


    public void setCustomer(String newSsn) {
	ssn = newSsn;
    }

    /**
    Update the list with current stock prices
    */

    private void updateList() {

	StockRec	srs[];

	    srs = db.getAllStocks();

	    // clear list and redisplay items
	    ul.removeAll();

	    for (int i=0; i<srs.length; i++) {
		    ul.add(srs[i].toString());
	    }

    }


    // event handler, wathces for click of list box

    public boolean handleEvent(Event event) {

	switch(event.id) {

		case Event.ACTION_EVENT:

			if (event.target == ul) {
				// Double click on our list box
				buy();
			}
			break;
		
		default:
			break;
	}

	return super.handleEvent(event);
    }

    /**
    Buy some of this stock
    */

    public void buy() {

	StockRec	sr = null;
	String		item = null;
	int		n = 0;


	if (ssn != null) {

	    if ((item = ul.getSelectedItem()) != null ) {

		sr = new StockRec(item);

		n = getNumberToBuy();

		// Actually buy shares
		try {
			db.buyShares(ssn, sr.getSymbol(), n);
		}
		catch (RecordNotFoundException e) {
			System.err.println("RecordNotFoundException: MarketList.buy()");
		}


		// Redisplay
		updateList();
	    }
	}
    }

    public int getNumberToBuy() {

    int	ret = 0;

		    
	    try {
		    ret = (new Integer(tfNum.getText())).intValue();
	    }
	    catch (NumberFormatException e) {
		    System.err.println("Invalid number entered" + tfNum.getText());
		    tfNum.setText("1");
		    ret = 0;
	    }

	    if (ret == 0) {
		    System.err.println("Number to buy is 0, no action");
	    }
	    else if (ret < 0) {
		    System.err.println("Invalid number entered: " + tfNum.getText());
	    }


	    return ret;
    }

}

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