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A collection of general utilities.

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/*
 * Copyright (c) 2013-2018, João Vitor Verona Biazibetti - All Rights Reserved
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see .
 *
 * https://www.github.com/BloodShura
 */

package com.github.bloodshura.x.utilities.temperature;

import com.github.bloodshura.x.utilities.eval.exception.EvaluationException;
import com.github.bloodshura.x.worker.StringWorker;

import javax.annotation.Nonnull;
import java.util.function.DoubleFunction;

public enum Temperature {
	CELSIUS("C", x -> x - 273.15, x -> x + 273.15),
	DELISLE("D", x -> (373.15 - x) * (3 / 2), x -> 373.15 - (x * (2 / 3))),
	FAHRENHEIT("F", x -> (x - 273.15) * (9 / 5) + 32, x -> (x - 32) * (5 / 9) + 273.15),
	KELVIN("K", x -> x, x -> x),
	NEWTON("N", x -> (x - 273.15) * 0.33, x -> (x / 0.33) + 273.15),
	RANKINE("Ra", x -> x * (9 / 5), x -> x * (5 / 9)),
	REAUMUR("Re", x -> (x - 273.15) * (4 / 5), x -> x * (5 / 4) + 273.15),
	ROMER("Rø", x -> (x - 273.15) * (21 / 40) + 7.5, x -> (x - 7.5) * (40 / 21) + 273.15);

	private final DoubleFunction fromKelvin;
	private final String name;
	private final String suffix;
	private final DoubleFunction toKelvin;

	private Temperature(@Nonnull String suffix, @Nonnull DoubleFunction fromKelvin, @Nonnull DoubleFunction toKelvin) throws EvaluationException {
		this.fromKelvin = fromKelvin;
		this.name = StringWorker.capitalizeFully(name());
		this.suffix = suffix;
		this.toKelvin = toKelvin;
	}

	public double convert(@Nonnull Temperature target, double value) {
		double kelvin = toKelvin.apply(value);

		return target.fromKelvin.apply(kelvin);
	}

	@Nonnull
	public String getName() {
		return name;
	}

	@Nonnull
	public String getSuffix() {
		return suffix;
	}
}