import java.io.BufferedReader;
import java.io.IOException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

import com.pi4j.io.gpio.GpioController;
import com.pi4j.io.gpio.GpioFactory;
import com.pi4j.io.gpio.GpioPinDigitalOutput;
import com.pi4j.io.gpio.RaspiPin;


public class Gpio {
        private GpioController gpio = GpioFactory.getInstance();
        private GpioPinDigitalOutput unit1 = gpio.provisionDigitalOutputPin(RaspiPin.GPIO_01);
        private GpioPinDigitalOutput unit2 = gpio.provisionDigitalOutputPin(RaspiPin.GPIO_02);
        private GpioPinDigitalOutput unit3 = gpio.provisionDigitalOutputPin(RaspiPin.GPIO_03);
        private GpioPinDigitalOutput unit4 = gpio.provisionDigitalOutputPin(RaspiPin.GPIO_04);

        public void toggle (String signal) {
                switch (signal) {
                case "ON unit 1":
                        unit1.high();
                        break;
                case "ON unit 2":
                        unit2.high();
                        break;
                case "ON unit 3":
                        unit3.high();
                        break;
                case "ON unit 4":
                        unit4.high();
                        break;
                case "OFF unit 1":
                        unit1.low();
                        break;
                case "OFF unit 2":
                        unit2.low();
                        break;
                case "OFF unit 3":
                        unit3.low();
                        break;
                case "OFF unit 4":
                        unit4.low();
                        break;
                }
        }


        public void startTimer(BufferedReader input) {

                try {
                		String time1 = input.readLine();
                		final String action = input.readLine();
                        SimpleDateFormat format = new SimpleDateFormat("HH:mm");

                		String currentTime = format.format(new Date());
                		Date time2 = format.parse(time1);

                		Date time3 = format.parse(currentTime);
                		final long difference = time2.getTime() - time3.getTime();

                		Thread thread = new Thread(){
                			public void run(){
                				try {
                					Thread.sleep(difference);
                					toggle(action);
                				} catch (InterruptedException e) {
                					e.printStackTrace();
                				}
                			}
                		};
                		thread.start();

                } catch (ParseException | IOException e) {
                        e.printStackTrace();
                }

        }
}