package org.springframework.security.token;

import java.util.Date;

import org.springframework.util.Assert;

/**
 * The default implementation of {@link Token}.
 * 
 * @author Ben Alex
 * @since 2.0.1
 */
public class DefaultToken implements Token {
	private String key;
	private long keyCreationTime;
	private String extendedInformation;
	
	public DefaultToken(String key, long keyCreationTime, String extendedInformation) {
		Assert.hasText(key, "Key required");
		Assert.notNull(extendedInformation, "Extended information cannot be null");
		this.key = key;
		this.keyCreationTime = keyCreationTime;
		this.extendedInformation = extendedInformation;
	}

	public String getKey() {
		return key;
	}
	
	public long getKeyCreationTime() {
		return keyCreationTime;
	}

	public String getExtendedInformation() {
		return extendedInformation;
	}

	public boolean equals(Object obj) {
		if (obj != null && obj instanceof DefaultToken) {
			DefaultToken rhs = (DefaultToken) obj;
			return this.key.equals(rhs.key) && this.keyCreationTime == rhs.keyCreationTime && this.extendedInformation.equals(rhs.extendedInformation);
		}
		return false;
	}

	public int hashCode() {
        int code = 979;
        code = code * key.hashCode();
        code = code * new Long(keyCreationTime).hashCode();
        code = code * extendedInformation.hashCode();
        return code;
	}

	public String toString() {
		return "DefaultToken[key=" + new String(key) + "; creation=" + new Date(keyCreationTime) + "; extended=" + extendedInformation + "]";
	}
	
	
}
