package org.april.agirstatool.core;

import java.util.Comparator;

/**
 * The Class ProjectComparator.
 */
public class ProjectComparator implements Comparator<Project>
{
	public enum Sorting
	{
		ID,
		IDENTIFIER,
		NAME
	}

	private Sorting sorting;

	/**
	 * 
	 * @param sorting
	 */
	public ProjectComparator(final Sorting sorting)
	{
		//
		this.sorting = sorting;
	}

	/**
	 * 
	 */
	@Override
	public int compare(final Project alpha, final Project bravo)
	{
		int result;

		result = compare(alpha, bravo, this.sorting);

		//
		return result;
	}

	/**
	 * 
	 */
	public static int compare(final Project alpha, final Project bravo, final Sorting sorting)
	{
		int result;

		if (sorting == null)
		{
			result = 0;
		}
		else
		{
			switch (sorting)
			{
				case ID:
					result = CompareUtils.compare(getId(alpha), getId(bravo));
				break;

				case IDENTIFIER:
					result = CompareUtils.compare(getIdentifier(alpha), getIdentifier(bravo));
				break;

				case NAME:
				default:
					result = CompareUtils.compare(getName(alpha), getName(bravo));
			}
		}

		//
		return result;
	}

	/**
	 * 
	 * @param source
	 * @return
	 */
	public static Long getId(final Project source)
	{
		Long result;

		if (source == null)
		{
			result = null;
		}
		else
		{
			result = source.getId();
		}

		//
		return result;
	}

	/**
	 * 
	 * @param source
	 * @return
	 */
	public static String getIdentifier(final Project source)
	{
		String result;

		if (source == null)
		{
			result = null;
		}
		else
		{
			result = source.getIdentifier();
		}

		//
		return result;
	}

	/**
	 * 
	 * @param source
	 * @return
	 */
	public static String getName(final Project source)
	{
		String result;

		if (source == null)
		{
			result = null;
		}
		else
		{
			result = source.getName();
		}

		//
		return result;
	}
}