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A collection of classes shared by broadleaf profile, cms, admin, and core.
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/*
 * Copyright 2008-2013 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.broadleafcommerce.common.util;

import java.math.BigDecimal;


public class UnitOfMeasureUtil {

    public static BigDecimal convertKilogramsToPounds(BigDecimal kilograms) {
        return kilograms.multiply(BigDecimal.valueOf(0.45359237));
    }

    public static BigDecimal convertPoundsToKilograms(BigDecimal pounds) {
        return pounds.multiply(BigDecimal.valueOf(2.20462262185));
    }

    public static BigDecimal convertPoundsToOunces(BigDecimal pounds) {
        return pounds.multiply(BigDecimal.valueOf(16));
    }

    public static BigDecimal convertOuncesToPounds(BigDecimal ounces) {
        return ounces.multiply(BigDecimal.valueOf(0.0625));
    }

    public static BigDecimal convertFeetToMeters(BigDecimal feet) {
        return feet.multiply(BigDecimal.valueOf(0.3048));
    }

    public static BigDecimal convertMetersToFeet(BigDecimal meters) {
        return meters.multiply(BigDecimal.valueOf(3.28084));
    }

    public static BigDecimal convertInchesToFeet(BigDecimal inches) {
        return inches.multiply(BigDecimal.valueOf(0.083333));
    }

    public static BigDecimal convertFeetToInches(BigDecimal feet) {
        return feet.multiply(BigDecimal.valueOf(12));
    }

    public static int findWholePounds(BigDecimal weight, WeightUnitOfMeasureType type) {
        weight = findPounds(weight, type);
        int pounds = Double.valueOf(Math.floor(weight.doubleValue())).intValue();
        return pounds;
    }

    public static BigDecimal findPounds(BigDecimal weight, WeightUnitOfMeasureType type) {
        if (type.equals(WeightUnitOfMeasureType.KILOGRAMS)) {
            weight = UnitOfMeasureUtil.convertKilogramsToPounds(weight);
        }
        return weight;
    }

    public static BigDecimal findRemainingOunces(BigDecimal weight, WeightUnitOfMeasureType type) {
        if (type.equals(WeightUnitOfMeasureType.KILOGRAMS)) {
            weight = UnitOfMeasureUtil.convertKilogramsToPounds(weight);
        }
        double fractionalPounds = weight.doubleValue() - Math.floor(weight.doubleValue());
        BigDecimal ounces = UnitOfMeasureUtil.convertPoundsToOunces(BigDecimal.valueOf(fractionalPounds));
        return ounces;
    }

    public static BigDecimal findOunces(BigDecimal weight, WeightUnitOfMeasureType type) {
        if (type.equals(WeightUnitOfMeasureType.KILOGRAMS)) {
            weight = UnitOfMeasureUtil.convertKilogramsToPounds(weight);
        }
        BigDecimal ounces = UnitOfMeasureUtil.convertPoundsToOunces(weight);
        return ounces;
    }

    public static BigDecimal findInches(BigDecimal dimension, DimensionUnitOfMeasureType type) {
        if (type.equals(DimensionUnitOfMeasureType.CENTIMETERS)) {
            dimension = UnitOfMeasureUtil.convertFeetToInches(UnitOfMeasureUtil.convertMetersToFeet(dimension.multiply(BigDecimal.valueOf(0.01))));
        }
        if (type.equals(DimensionUnitOfMeasureType.METERS)) {
            dimension = UnitOfMeasureUtil.convertFeetToInches(UnitOfMeasureUtil.convertMetersToFeet(dimension));
        }
        if (type.equals(DimensionUnitOfMeasureType.FEET)) {
            dimension = UnitOfMeasureUtil.convertFeetToInches(dimension);
        }
        return dimension;
    }
}