package ezvcard.parameter;

import java.util.Collection;

import ezvcard.property.Expertise;

/*
 Copyright (c) 2012-2020, Michael Angstadt
 All rights reserved.

 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are met: 

 1. Redistributions of source code must retain the above copyright notice, this
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 this list of conditions and the following disclaimer in the documentation
 and/or other materials provided with the distribution. 

 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 of the authors and should not be interpreted as representing official policies, 
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 */

/**
 * Represents a LEVEL parameter for the {@link Expertise} property.
 * 
 * <p>
 * <b>Supported versions:</b> {@code 4.0}
 * </p>
 * @author Michael Angstadt
 * @see <a href="http://tools.ietf.org/html/rfc6715">RFC 6715</a>
 */
public class ExpertiseLevel extends VCardParameter {
	private static final VCardParameterCaseClasses<ExpertiseLevel> enums = new VCardParameterCaseClasses<ExpertiseLevel>(ExpertiseLevel.class);

	public static final ExpertiseLevel BEGINNER = new ExpertiseLevel("beginner");
	public static final ExpertiseLevel AVERAGE = new ExpertiseLevel("average");
	public static final ExpertiseLevel EXPERT = new ExpertiseLevel("expert");

	private ExpertiseLevel(String value) {
		super(value);
	}

	/**
	 * Searches for a parameter value that is defined as a static constant in
	 * this class.
	 * @param value the parameter value
	 * @return the object or null if not found
	 */
	public static ExpertiseLevel find(String value) {
		return enums.find(value);
	}

	/**
	 * Searches for a parameter value and creates one if it cannot be found. All
	 * objects are guaranteed to be unique, so they can be compared with
	 * {@code ==} equality.
	 * @param value the parameter value
	 * @return the object
	 */
	public static ExpertiseLevel get(String value) {
		return enums.get(value);
	}

	/**
	 * Gets all of the parameter values that are defined as static constants in
	 * this class.
	 * @return the parameter values
	 */
	public static Collection<ExpertiseLevel> all() {
		return enums.all();
	}
}
