package com.mmcvey;

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

public class IO {

	private volatile boolean running;
	
	private final GpioPinDigitalInput button0, button1, button2, button3;
	private final GpioController gpio;

	private final SoundAnalyser sa;
	private final Main main;
	
	private final GpioPinListenerDigital cw, cc, stop, nextMode;

	public IO(SoundAnalyser sa, Main main, GpioController gpio) {

		stop = new GpioPinListenerDigital() {
			@Override
			public synchronized void handleGpioPinDigitalStateChangeEvent(GpioPinDigitalStateChangeEvent arg0) {
				main.stop();
				stop();
			}
		};
		
		cw = new GpioPinListenerDigital() {
			private int mode = 1;
			@Override
			public synchronized void handleGpioPinDigitalStateChangeEvent(GpioPinDigitalStateChangeEvent arg0) {
				if (arg0.getState() == PinState.HIGH) {
					return;
				}
				System.out.println("CW changed: mode=" + mode);
				if (mode == 0) {
					sa.setColorWight(1.5f);
					mode++;
				} else if (mode == 1) {
					sa.setColorWight(2.0f);
					mode++;
				} else if (mode == 2) {
					sa.setColorWight(2.5f);
					mode++;
				} else if (mode == 3) {
					sa.setColorWight(3.0f);
					mode++;
				} else {
					sa.setColorWight(1.0f);
					mode = 0;
				}
			}
		};
		cc = new GpioPinListenerDigital() {
			private int mode = 1;
			@Override
			public synchronized void handleGpioPinDigitalStateChangeEvent(GpioPinDigitalStateChangeEvent arg0) {
				if (arg0.getState() == PinState.HIGH) {
					return;
				}
				System.out.println("CC changed: mode=" + mode);
				if (mode == 0) {
					sa.setChangeCooldown(0.5);
					mode++;
				} else if (mode == 1) {
					sa.setChangeCooldown(0.75);
					mode++;
				} else if (mode == 2) {
					sa.setChangeCooldown(1.0);
					mode++;
				} else if (mode == 3) {
					sa.setChangeCooldown(1.5);
					mode++;
				}  else if (mode == 4) {
					sa.setChangeCooldown(10.0);
					mode++;
				} else {
					sa.setChangeCooldown(0.25);
					mode = 0;
				}
			}
		};
		
		nextMode = new GpioPinListenerDigital() {
			@Override
			public synchronized void handleGpioPinDigitalStateChangeEvent(GpioPinDigitalStateChangeEvent arg0) {
				if (arg0.getState() == PinState.HIGH) {
					return;
				}
				main.nextMode();
			}
		};
		
		this.sa = sa;
		this.main = main;
		this.gpio = gpio;
		button0 = gpio.provisionDigitalInputPin(RaspiPin.GPIO_00, PinPullResistance.PULL_UP);
		button1 = gpio.provisionDigitalInputPin(RaspiPin.GPIO_01, PinPullResistance.PULL_UP);
		button2 = gpio.provisionDigitalInputPin(RaspiPin.GPIO_02, PinPullResistance.PULL_UP);
		button3 = gpio.provisionDigitalInputPin(RaspiPin.GPIO_03, PinPullResistance.PULL_UP);
		button0.setShutdownOptions(true);
		button1.setShutdownOptions(true);
		button2.setShutdownOptions(true);
		button3.setShutdownOptions(true);
		button0.addListener(stop);
		button1.addListener(cw);
		button2.addListener(cc);
		button3.addListener(nextMode);
	}
	
	public void start() {
		new Thread(() -> run()).start();
	}
	
	/**
	 * stop gc
	 */
	public synchronized void run() {
		running = true;
		try {
			while(running) {
				Thread.sleep(500);
			}
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	public void stop() {
		running = false;
	}

}