package enumeration;

import java.util.Arrays;
import java.util.Collections;
import java.util.List;


// Ordinal-based typesafe enum (From Bloch)
//
// No need to override equals, since only one instance of each rank.
// Note that instanceNum and name are instance fields.
// Note that cNumInstances is a class field.
// Note that the order of the constant definitions is important.
// Note that VALUES is an immutable collection.
// Java arrays are always mutable :-(
public final class Rank implements Comparable<Rank> {
	// Number of instances
	private static int cNumInstances = 0;

	// Ordinal for this instance
	private final int instanceNum;

	// Name of Rank
	private final String name;

	// Private constructor: All instances created in the class
	private Rank(String name) {
		this.name = name;
		instanceNum = Rank.cNumInstances++;
	}

	public String toString() {
		return name;
	}

	public int compareTo(Rank that) {
		return this.instanceNum - that.instanceNum;
	}

	public int getValue() {
		if (this == ACE_HIGH) {
			return 1;
		} else {
			return instanceNum + 1;
		}
	}

	public static final Rank ACE_LOW = new Rank("ace");
	public static final Rank TWO = new Rank("two");
	public static final Rank THREE = new Rank("three");
	public static final Rank FOUR = new Rank("four");
	public static final Rank FIVE = new Rank("five");
	public static final Rank SIX = new Rank("six");
	public static final Rank SEVEN = new Rank("seven");
	public static final Rank EIGHT = new Rank("eight");
	public static final Rank NINE = new Rank("nine");
	public static final Rank TEN = new Rank("ten");
	public static final Rank JACK = new Rank("jack");
	public static final Rank QUEEN = new Rank("queen");
	public static final Rank KING = new Rank("king");
	public static final Rank ACE_HIGH = new Rank("ace");
	public static final List<Rank> VALUES;
	static {
		Rank[] values = {
				ACE_LOW, TWO, THREE, FOUR, FIVE, SIX, SEVEN, EIGHT, NINE, TEN, JACK, QUEEN, KING, ACE_HIGH
		};
		VALUES = Collections.unmodifiableList(Arrays.asList(values));
	}
}