vrauthcode for card

code/MoyaBeans/ejbModule/fi/codecrew/moya/beans/BarcodeBean.java

@@ -96,6 +96,53 @@ public class BarcodeBean implements BarcodeBeanLocal {
 		return hexcode;
 		return hexcode;
 	}
 	}
 	
 	
+	public String getVrAuthCodeForCard(PrintedCard printedCard) {
+		StringBuilder sb = new StringBuilder();
+		sb.append(PRINTED_CARD_PREFIX);
+		if(printedCard == null)
+			return "";
+		String idStr = printedCard.getId().toString();
+		
+		for (int i = 8 - idStr.length() - sb.length(); i > 0; --i) {
+			sb.append("0");
+		}
+		sb.append(idStr);
+		String code = sb.toString();
+		
+		String hexcode = Integer.toHexString(Integer.parseInt(code));
+		String checksum = Integer.toHexString(hexcode.hashCode());
+		checksum = checksum.substring(checksum.length() -3);
+		hexcode += checksum;
+		//hexcode = Integer.toString(hexcode.hashCode());
+		
+		logger.debug("Geneating VrAuthcode for card {} : {}", printedCard.getId(), hexcode);
+		
+		return hexcode;
+	}
+	
+	public String checkVrAuthCode(String code) {
+		String checksumNew = code.substring(code.length() -3);
+		code = code.substring(0, (code.length()-3));
+		String checksumOld = Integer.toHexString(code.hashCode());
+		checksumOld = checksumOld.substring(checksumOld.length() -3);
+		if(checksumNew == checksumOld) {
+			int decimal = Integer.decode(code);
+			code = Integer.toString(decimal);
+			String prefix = code.substring(0, 2);
+			int id = Integer.parseInt(code.substring(3, code.length() -1));
+			if(prefix == PRINTED_CARD_PREFIX && id != 0) {
+				PrintedCard printedCard = printedCardFacade.find(id);
+				if(printedCard != null)
+					return printedCard.getUser().getNick();
+				else
+					return "Invalid";
+			}
+		} else {
+			return "Invalid";
+		}
+		return "Invalid";
+	}
+	
 	@Override
 	@Override
 	public Place getPlaceFromHexcode(String hexcode) {
 	public Place getPlaceFromHexcode(String hexcode) {