/*************************************************************************
 *                                                                       *
 *  CERT-CVC: EAC 1.11 Card Verifiable Certificate Library               * 
 *                                                                       *
 *  This software is free software; you can redistribute it and/or       *
 *  modify it under the terms of the GNU Lesser General Public           *
 *  License as published by the Free Software Foundation; either         *
 *  version 2.1 of the License, or any later version.                    *
 *                                                                       *
 *  See terms of license at gnu.org.                                     *
 *                                                                       *
 *************************************************************************/
package org.ejbca.cvc;

/**
 * Represents Access Rights for Authentication Terminals. Use with OID
 * CVCObjectIdentifiers.id_EAC_AuthTerm. Described in the EAC 1.11 spec page 36.
 * 
 * @author Keijo Kurkinen, Swedish National Police Board
 * @version $Id: AccessRightEnum.java 18548 2014-03-04 11:46:03Z samuellb $
 *
 */
public enum AccessRightEnum implements AccessRights {

    READ_ACCESS_NONE(0x00), READ_ACCESS_DG3(0x01), READ_ACCESS_DG4(0x02), READ_ACCESS_DG3_AND_DG4(0x03);
    // bit 0x4 and 0x8 are Reserved for Future Use

    private byte value;

    private AccessRightEnum(int value) {
	this.value = (byte) value;
    }

    /**
     * Returns the tag as a bitmap
     * 
     * @return
     */
    public byte getValue() {
	return value;
    }

    public boolean hasDG3() {
	return (this.value & READ_ACCESS_DG3.value) != 0;
    }

    public boolean hasDG4() {
	return (this.value & READ_ACCESS_DG4.value) != 0;
    }

    @Override
    public byte[] getEncoded() {
	return new byte[] { value };
    }

    @Override
    public String toString() {
	switch (this) {
	case READ_ACCESS_DG3_AND_DG4:
	    return "DG3+DG4";
	case READ_ACCESS_DG4:
	    return "DG4";
	case READ_ACCESS_DG3:
	    return "DG3";
	case READ_ACCESS_NONE:
	    return "none";
	}
	throw new IllegalStateException("Enum case not handled");
    }

}