package org.eparapher.rcp.statusline;

import java.util.Timer;
import java.util.TimerTask;

import org.apache.log4j.Logger;
import org.eclipse.jface.action.IStatusLineManager;
import org.eclipse.jface.action.StatusLineManager;
import org.eclipse.swt.widgets.Display;
import org.eparapher.core.crypto.EPKeystoreManager;
import org.eparapher.core.crypto.keystore.HardwareKeyStore;
import org.eparapher.core.interfaces.IUserKeystore;
import org.eparapher.rcp.tools.GUIIcons;
import org.eparapher.rcp.tools.StatusLineContributionItem;


public class TokenStatus {
	
	private static Logger log = Logger.getLogger(TokenStatus.class);
	
	private final static String ITEM_ID = "TokenStatus";
	
	final StatusLineContributionItem tokenStatus;

	boolean tokenstatus;
	
	long delay = 6;  //Wait for 6 sec
	long period = 1; // and execute every 1 sec
	
	public TokenStatus(IStatusLineManager statusLine) {
		
		super();
		
		tokenStatus = new StatusLineContributionItem( ITEM_ID, true, 21);
		displayTokenStatus(tokenStatus);
		tokenStatus.setText("PKCS#11 Token");
		tokenStatus.setVisible(true);
		statusLine.appendToGroup(StatusLineManager.END_GROUP, tokenStatus);
		tokenStatus.setImage(GUIIcons.WARN_ICON_IMAGE);
		
		tokenstatus = false;
		
		// Wait delay seconds, and refresh status every period Seconds
		Timer timer = new Timer(true);
		TokenTimerTask tokentimer= new TokenTimerTask();
		timer.scheduleAtFixedRate(tokentimer, delay * 1000, period * 1000);
	}

	private void displayTokenStatus(StatusLineContributionItem mtokenStatus) {
		if (EPKeystoreManager.isPKCS11Used()) {

			IUserKeystore myuserkeystore = EPKeystoreManager.getInstance().getUserkeystore();
			if (myuserkeystore instanceof HardwareKeyStore) {
				HardwareKeyStore usertoken = (HardwareKeyStore) myuserkeystore;
				mtokenStatus.setVisible(true);
				if (usertoken.isKeystoreLoaded() && !tokenstatus) {
					mtokenStatus.setToolTipText("Token loaded");
					mtokenStatus.setImage(GUIIcons.OK_ICON_IMAGE);
					tokenstatus = true;
				}
				if (!usertoken.isKeystoreLoaded() && tokenstatus) {
					mtokenStatus.setToolTipText("Token is removed");
					mtokenStatus.setImage(GUIIcons.KO_ICON_IMAGE);
					tokenstatus = false;
				}
			} else
				log.error("Problem : PKCS11 configured but HardwareKeyStore not loaded");
		} else {
			if (tokenstatus) {
				mtokenStatus.setVisible(false);
				mtokenStatus.setToolTipText("Token not used");
				mtokenStatus.setImage(GUIIcons.WARN_ICON_IMAGE);
				tokenstatus = false;
			}
		}
	}
		
	class TokenTimerTask extends TimerTask {

		public void run() {
		    Display.getDefault().asyncExec(
		   		new Runnable() {
		   			public void run() {
		   				displayTokenStatus(tokenStatus);
		   			}
		   		}
		   	);
		}
		
	}

}