package me.TJM4.ProAnimations.Animator;

import java.math.RoundingMode;
import java.text.DecimalFormat;
import java.util.Timer;
import java.util.TimerTask;

import org.bukkit.Location;
import org.bukkit.entity.Entity;
import org.bukkit.entity.LivingEntity;
import org.bukkit.event.Listener;

import me.TJM4.ProAnimations.Main.Main;

public class Animator implements Listener{

	public int fps = Main.plugin.getConfig().getInt("animationSpeed"); //FPS

	private double oneDpRoundF(float f) { //Used to round number to 1dp
		DecimalFormat df = new DecimalFormat("#.#");
		df.setRoundingMode(RoundingMode.CEILING);
		return Float.parseFloat(df.format(f));
	}

	private double oneDpRoundD(double d) { //Used to round number to 1dp
		DecimalFormat df = new DecimalFormat("#.#");
		df.setRoundingMode(RoundingMode.CEILING);
		return Double.parseDouble(df.format(d));
	}

	public void animateRotation(Entity e, Location from, Location to, int seconds, Runnable r) { //Animation rotate

		if (e instanceof LivingEntity) { //If they are a mob
			((LivingEntity)e).setAI(false); //Remove there AI
		}

		e.setInvulnerable(true); //Stopping mob from tacking damage

		float changeAcross = to.getPitch() - from.getPitch(); //Amount of across rotation needed each time
		float changeUp = to.getYaw() - from.getYaw(); //Amount of up rotation needed each time

		int waitTime = Math.round(1000/fps); //Amount of time waiting between each frame update

		int totalFrames = fps*seconds; //Total amount of frames


		float changePerTimeAcross = changeAcross/totalFrames; //Amount of change per time moving across
		float changePerTimeUp = changeUp/totalFrames; //Amount of change per time moving up

		Timer timer = new Timer(); //Creating timer

		TimerTask runFrame = new TimerTask() { //Timer task + runnable

			@Override
			public void run() {
				Location newLoc = e.getLocation();
				newLoc.setPitch(newLoc.getPitch() + changePerTimeAcross);
				newLoc.setYaw(newLoc.getYaw() + changePerTimeUp);
				e.teleport(newLoc);
				if ((oneDpRoundF(newLoc.getPitch()) == to.getPitch()) && (oneDpRoundF(newLoc.getYaw()) == to.getYaw())) { //Round new loc roation to 1dp
					timer.cancel();
					if (r != null) {
						r.run();
					}
				}
			}
		};

		timer.schedule(runFrame, 0, waitTime); //Running task
	}

	public void transform(Entity e, Location from, Location to, int seconds, Runnable r) { //Animation transform

		if (e instanceof LivingEntity) { //If they are a mob
			((LivingEntity)e).setAI(false); //Remove there AI
		}

		e.setInvulnerable(true); //Stopping mob from taking damage

		double changeX = to.getX() - from.getX(); //Amount of X change needed each time
		double changeY = to.getY() - from.getY(); //Amount of Y change needed each time
		double changeZ = to.getZ() - from.getZ(); //Amount of Z change needed each time

		int waitTime = Math.round(1000/fps); //Amount of time waiting between each frame update

		int totalFrames = fps*seconds; //Total amount of frames


		double changePerTimeX = changeX/totalFrames; //Amount of change per time moving across
		double changePerTimeY = changeY/totalFrames; //Amount of change per time moving up
		double changePerTimeZ = changeZ/totalFrames; //Amount of change per time moving up

		Timer timer = new Timer(); //Creating timer

		TimerTask runFrame = new TimerTask() { //Timer task + runnable

			@Override
			public void run() {
				Location newLoc = e.getLocation();
				newLoc.setX(newLoc.getX() + changePerTimeX);
				newLoc.setY(newLoc.getY() + changePerTimeY);
				newLoc.setZ(newLoc.getZ() + changePerTimeZ);
				e.teleport(newLoc);
				if (oneDpRoundD(newLoc.getX()) == oneDpRoundD(to.getX()) && oneDpRoundD(newLoc.getY()) == oneDpRoundD(to.getY()) && oneDpRoundD(newLoc.getZ()) == oneDpRoundD(to.getZ())) { //Round new loc roation to 1dp
					timer.cancel();

					if (r != null) {
						r.run();
					}
				}
			}
		};

		timer.schedule(runFrame, 0, waitTime); //Running task
	}

}