package org.argeo.naming;
   
   import java.time.Instant;
   import java.time.ZoneOffset;
   import java.time.ZonedDateTime;
   
   public class SharedSecret extends AuthPassword {
   	public final static String X_SHARED_SECRET = "X-SharedSecret";
   	private final Instant expiry;
  
  	public SharedSecret(String authInfo, String authValue) {
  		super(authInfo, authValue);
  		expiry = null;
  	}
  
  	public SharedSecret(AuthPassword authPassword) {
  		super(authPassword);
  		String authInfo = getAuthInfo();
  		if (authInfo.length() == 16) {
  			expiry = NamingUtils.ldapDateToInstant(authInfo);
  		} else {
  			expiry = null;
  		}
  	}
  
  	public SharedSecret(ZonedDateTime expiryTimestamp, String value) {
  		super(NamingUtils.instantToLdapDate(expiryTimestamp), value);
  		expiry = expiryTimestamp.withZoneSameInstant(ZoneOffset.UTC).toInstant();
  	}
  
  	public SharedSecret(int hours, String value) {
  		this(ZonedDateTime.now().plusHours(hours), value);
  	}
  
  	@Override
  	protected String getExpectedAuthScheme() {
  		return X_SHARED_SECRET;
  	}
  
  	public boolean isExpired() {
  		if (expiry == null)
  			return false;
  		return expiry.isBefore(Instant.now());
  	}
  
  }