package io.github.bi0qaw.biosphere.expression;

import ch.njol.skript.doc.Description;
import ch.njol.skript.doc.Examples;
import ch.njol.skript.doc.Name;
import ch.njol.skript.lang.Expression;
import ch.njol.skript.lang.SkriptParser.ParseResult;
import ch.njol.skript.lang.util.SimpleExpression;
import ch.njol.util.Kleenean;
import io.github.bi0qaw.biosphere.util.LocationLib;
import org.bukkit.Location;
import org.bukkit.event.Event;

import org.jetbrains.annotations.Nullable;

@Name("Location Link All")
@Description("Creates a list of locations linking multiple locations with lines. The density value controls the amount of points. A higher number increases the amount of points. A density of 1 corresponds to 1 point per block.")
@Examples({"set {_circle::*} to circle at player with radius 5 and density 0.2",
			"#gets the points in the shape of a circle around the player",
			"set {_linked::*} to {_circle::*} linked with density 2",
			"#connects all points on the circle with lines",
			"show happy villager at {_linked::*}"})
public class ExprLocationLinkAll extends SimpleExpression<Location>{

	private Expression<Location> locations;
	private Expression<Number> density;

	@Override
	public Class<? extends Location> getReturnType() {
		return Location.class;
	}

	@Override
	public boolean isSingle() {
		return false;
	}

	@SuppressWarnings("unchecked")
	@Override
	public boolean init(Expression<?>[] expr, int arg1, Kleenean arg2, ParseResult arg3) {
		locations = (Expression<Location>) expr[0];
		density = (Expression<Number>) expr[1];
		return true;
	}

	@Override
	public String toString(@Nullable Event arg0, boolean arg1) {
		return locations.toString(arg0, arg1) + " linked with density " + density.toString(arg0, arg1);
	}

	@Override
	@Nullable
	protected Location[] get(Event e) {
		double d = density.getSingle(e).doubleValue();
		return LocationLib.linkAll(locations.getArray(e), d);
	}

}