package hello;

import java.io.IOException;
import javax.bluetooth.BluetoothStateException;
import javax.bluetooth.DeviceClass;
import javax.bluetooth.DiscoveryAgent;
import javax.bluetooth.DiscoveryListener;
import javax.bluetooth.LocalDevice;
import javax.bluetooth.RemoteDevice;
import javax.bluetooth.ServiceRecord;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;


public class HelloMIDlet extends MIDlet implements CommandListener, DiscoveryListener {

    private Command exitCommand; // The exit command
    private Display display;     // The display for this MIDlet
    private Command bluetoothCommand; // The exit command
    private Command clearCommand;

    private TextBox t;

    private int deviceCounter;
    private LocalDevice device;
    private DiscoveryAgent agent;

    public HelloMIDlet() {
        display = Display.getDisplay(this);
        t = new TextBox("Hello", "Urządzenia", 500, 0);
        exitCommand = new Command("Exit", Command.EXIT, 0);
        bluetoothCommand = new Command("Bluetooth", Command.ITEM, 0);
        clearCommand = new Command("Clear", Command.ITEM, 0);
        try {
            device = LocalDevice.getLocalDevice();
        } catch (BluetoothStateException ex) {
            ex.printStackTrace();
        }
        agent = device.getDiscoveryAgent();
    }

    public void startApp() {

        t = new TextBox("Hello", "Urządzenia", 500, 0);
        t.addCommand(exitCommand);
        t.addCommand(bluetoothCommand);
        t.addCommand(clearCommand);
        t.setCommandListener(this);
        display.setCurrent(t);
    }

    public void pauseApp() {
    }

    public void destroyApp(boolean unconditional) {
    }

    public void commandAction(Command c, Displayable s) {
        if (c == exitCommand) {
            destroyApp(false);
            notifyDestroyed();
        } else if (c == bluetoothCommand) {
            try {

                agent.startInquiry(DiscoveryAgent.GIAC, this);
            } catch (BluetoothStateException ex) {
                ex.printStackTrace();
            }
        } else if (c == clearCommand) {

            t.setString("Urządzenia: ");
            deviceCounter = 0;
        }
    }

    public void deviceDiscovered(RemoteDevice arg0, DeviceClass arg1) {
        try {
            String text = t.getString();
            text = text + arg0.getFriendlyName(false);
            t.setString(text);
            deviceCounter++;
        } catch (IOException ex) {
            t.setString(ex.getMessage());
        }
    }

    public void inquiryCompleted(int arg0) {
        String text = t.getString();
       text = text + "Znaleziono " +  deviceCounter + " urządzeń";
        t.setString(text);
    }

    public void serviceSearchCompleted(int arg0, int arg1) {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    public void servicesDiscovered(int arg0, ServiceRecord[] arg1) {
        throw new UnsupportedOperationException("Not supported yet.");
    }

}