package mixconfig.tools.dataretention.smartcard.commands;

import javax.smartcardio.CommandAPDU;

import mixconfig.tools.dataretention.smartcard.ApduConstants;
import mixconfig.tools.dataretention.smartcard.Helpers;

public class AbstractCommand {

	/**
	 * Code of the ANONCardApplet (CLA)
	 */
	protected byte apduClass = ApduConstants.CLA_ANON;
	/**
	 * Instruction Code (INS)
	 */
	protected byte instruction = 0;
	/**
	 * P1
	 */
	protected byte p1 = 0x00;
	/**
	 * P2
	 */
	protected byte p2 = 0x00;
	/**
	 * The data (LC = arguments.length)
	 */
	protected byte[] arguments = {};
	/**
	 * The maximal length of the expected return value (LE)
	 */
	protected byte expectedReturnDataLength = 0;
	/**
	 * The unformatted answer of the ANONCardApplet
	 */
	protected byte[] rawResponse;

	public CommandAPDU buildCommandApdu() {
		CommandAPDU commandApdu = new CommandAPDU(apduClass, instruction, p1, p2, arguments, expectedReturnDataLength);

		return commandApdu;
	}

	public void setResponse(byte[] responseData, int sw1, int sw2) throws ErrorCodeException {
		// SW1/SW2 0..255
		if (sw1 == 0x90 && sw2 == 0x00 || sw1 == 0x61) {
			rawResponse = responseData;
		} else {
			throw new ErrorCodeException("Error" + Helpers.bytesToHexDigits(responseData) + "Status: " + Helpers.bytesToHexDigits(new byte[] { (byte) sw1, (byte) sw2 }));
		}
	}
}