package net.minecraft.util;

import java.util.Objects;
import java.util.function.Function;

public interface BoundedFloatFunction<C> {
	BoundedFloatFunction<Float> IDENTITY = new BoundedFloatFunction<Float>() {
		public float apply(final Float value) {
			return value;
		}

		@Override
		public float minValue() {
			return Float.NEGATIVE_INFINITY;
		}

		@Override
		public float maxValue() {
			return Float.POSITIVE_INFINITY;
		}
	};

	float apply(final C c);

	float minValue();

	float maxValue();

	static <C> BoundedFloatFunction<C> constant(final float value) {
		return new BoundedFloatFunction<C>() {
			@Override
			public float apply(final C c) {
				return value;
			}

			@Override
			public float minValue() {
				return value;
			}

			@Override
			public float maxValue() {
				return value;
			}
		};
	}

	default <C2> BoundedFloatFunction<C2> comap(final Function<C2, C> function) {
		final BoundedFloatFunction<C> outer = this;
		return new BoundedFloatFunction<C2>() {
			{
				Objects.requireNonNull(BoundedFloatFunction.this);
			}

			@Override
			public float apply(final C2 c2) {
				return outer.apply((C)function.apply(c2));
			}

			@Override
			public float minValue() {
				return outer.minValue();
			}

			@Override
			public float maxValue() {
				return outer.maxValue();
			}
		};
	}
}