/*
 * Copyright (c) 2014, grossmann
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * * Neither the name of the jo-widgets.org nor the
 *   names of its contributors may be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL jo-widgets.org BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 */

package org.jowidgets.unit.api;

import org.jowidgets.i18n.api.IMessage;
import org.jowidgets.i18n.tools.StaticMessage;
import org.jowidgets.util.Assert;

public final class Unit {

    private Unit() {}

    public static IUnit create(final String abbreviation) {
        return builder().abbreviation(abbreviation).build();
    }

    public static IUnit create(final String abbreviation, final String name) {
        return builder().abbreviation(abbreviation).name(name).build();
    }

    public static IUnit create(final String abbreviation, final long conversionFactor) {
        return builder().abbreviation(abbreviation).conversionFactor(conversionFactor).build();
    }

    public static IUnit create(final String abbreviation, final double conversionFactor) {
        return builder().abbreviation(abbreviation).conversionFactor(conversionFactor).build();
    }

    public static IUnit create(final String abbreviation, final String name, final long conversionFactor) {
        return builder().abbreviation(abbreviation).name(name).conversionFactor(conversionFactor).build();
    }

    public static IUnit create(final String abbreviation, final String name, final double conversionFactor) {
        return builder().abbreviation(abbreviation).name(name).conversionFactor(conversionFactor).build();
    }

    public static IUnitBuilder builder() {
        return new UnitBuilderImpl();
    }

    private static final class UnitBuilderImpl implements IUnitBuilder {

        private IMessage abbreviation;
        private IMessage name = new StaticMessage(null);
        private double conversionFactor = 1.0;

        @Override
        public IUnitBuilder abbreviation(final IMessage abbreviation) {
            Assert.paramNotNull(abbreviation, "abbreviation");
            this.abbreviation = abbreviation;
            return this;
        }

        @Override
        public IUnitBuilder name(final IMessage name) {
            Assert.paramNotNull(name, "name");
            this.name = name;
            return this;
        }

        @Override
        public IUnitBuilder abbreviation(final String abbreviation) {
            Assert.paramNotEmpty(abbreviation, "abbreviation");
            return abbreviation(new StaticMessage(abbreviation));
        }

        @Override
        public IUnitBuilder name(final String name) {
            return abbreviation(new StaticMessage(name));
        }

        @Override
        public IUnitBuilder conversionFactor(final double conversionFactor) {
            this.conversionFactor = conversionFactor;
            return this;
        }

        @Override
        public IUnitBuilder conversionFactor(final long conversionFactor) {
            this.conversionFactor = conversionFactor;
            return this;
        }

        @Override
        public IUnit build() {
            return new UnitImpl(abbreviation, name, conversionFactor);
        }

    }

    private static final class UnitImpl implements IUnit {

        private final IMessage abbreviation;
        private final IMessage name;
        private final double conversionFactor;

        UnitImpl(final IMessage abbreviation, final IMessage name, final double conversionFactor) {
            Assert.paramNotNull(abbreviation, "abbreviation");
            Assert.paramNotNull(name, "name");

            this.abbreviation = abbreviation;
            this.name = name;
            this.conversionFactor = conversionFactor;
        }

        @Override
        public String getAbbreviation() {
            return abbreviation.get();
        }

        @Override
        public String getName() {
            return name.get();
        }

        @Override
        public double getConversionFactor() {
            return conversionFactor;
        }

        @Override
        public String toString() {
            return getAbbreviation();
        }

    }

}