import com.pi4j.io.gpio.GpioController;
import com.pi4j.io.gpio.GpioFactory;
import com.pi4j.io.gpio.GpioPinDigitalInput;
import com.pi4j.io.gpio.GpioPinDigitalOutput;
import com.pi4j.io.gpio.PinState;
import com.pi4j.io.gpio.PinPullResistance;
import com.pi4j.io.gpio.RaspiPin;
import com.pi4j.io.gpio.event.GpioPinDigitalStateChangeEvent;
import com.pi4j.io.gpio.event.GpioPinListenerDigital;
import java.io.*;
import java.net.*;

public class ButtonLedNetwork {
	
	private final static int PORT = 12345;
		
	private final static String HOST = "raspberrypi.local";
	
	public static void main(String[] args) throws InterruptedException, IOException, UnknownHostException {
		
		
		Socket socket = new Socket(HOST, PORT);
		
		
		final GpioController gpioCtrl = GpioFactory.getInstance();
		
		final GpioPinDigitalInput button = gpioCtrl.provisionDigitalInputPin(RaspiPin.GPIO_00, PinPullResistance.PULL_UP);
		final GpioPinDigitalOutput pin = gpioCtrl.provisionDigitalOutputPin(RaspiPin.GPIO_01, "Red led", PinState.LOW);
		
		button.setShutdownOptions(true);
		pin.setShutdownOptions(true, PinState.LOW, PinPullResistance.OFF);
		
		System.out.println("Ready to take off!");
		
		button.addListener(new GpioPinListenerDigital() {
            @Override
            public void handleGpioPinDigitalStateChangeEvent(GpioPinDigitalStateChangeEvent event) {
				try {
					if (event.getState() == PinState.LOW) {
						System.out.println("Bouton enfoncé");
						pin.high();
						socket.getOutputStream().write("run".getBytes("UTF-8"));
					} else if (event.getState() == PinState.HIGH) {
						System.out.println("Bouton relaché");
						pin.low();
						socket.getOutputStream().write("stop".getBytes("UTF-8"));
					}
				} catch (IOException e) {
					System.out.println("Error send command: " + e.getMessage());
				}
            }
            
        });
        
        Runtime.getRuntime().addShutdownHook(new Thread() {
			public void run() {
				try {
					socket.close();
					gpioCtrl.shutdown();
				} catch (IOException e) {
					System.out.println("Error close socket: " + e.getMessage());
				}
			}
		});
        
        while (true) {
            Thread.sleep(500);
        }
		
		//clientSocket.close();
		//gpioCtrl.shutdown();
		
	}
	
}