package at.gv.egovernment.moa.id.auth.builder;

import java.text.MessageFormat;

import at.gv.egovernment.moa.util.Constants;

/**
 * Builder for the authentication block <code>&lt;saml:Assertion&gt;</code>
 * to be included in a <code>&lt;CreateXMLSignatureResponse&gt;</code>.
 * 
 * @author Paul Ivancsics
 * @version $Id$
 */
public class AuthenticationBlockAssertionBuilder implements Constants {
  /** private static String nl contains the NewLine representation in Java*/
	private static String nl = "\n";
  /** private static String AUTH_BLOCK contains an XML-Auth-Block-Template */
  private static String AUTH_BLOCK = 
  	"<saml:Assertion xmlns:saml=''" + SAML_NS_URI + "'' MajorVersion=''1'' MinorVersion=''0'' AssertionID=''any'' Issuer=''{0}'' IssueInstant=''{1}''>" + nl +
  	"	<saml:AttributeStatement>" + nl +
		"		<saml:Subject>" + nl +
		"			<saml:NameIdentifier>{2}</saml:NameIdentifier>" + nl +
	  "		</saml:Subject>" + nl +
	  "		<saml:Attribute AttributeName=''Geschäftsbereich'' AttributeNamespace=''" + MOA_NS_URI + "''>" + nl +
	  "			<saml:AttributeValue>{3}</saml:AttributeValue>" + nl +
	  "		</saml:Attribute>" + nl +
	  "		<saml:Attribute AttributeName=''OA'' AttributeNamespace=''" + MOA_NS_URI + "''>" + nl +
	  "			<saml:AttributeValue>{4}</saml:AttributeValue>" + nl +
	  "		</saml:Attribute>" + nl +
	  "	</saml:AttributeStatement>" + nl +
		"</saml:Assertion>";

  /**
   * Constructor for AuthenticationBlockAssertionBuilder.
   */
  public AuthenticationBlockAssertionBuilder() {
    super();
  }
  /**
   * Builds the authentication block <code>&lt;saml:Assertion&gt;</code>.
   * 
   * @param issuer authentication block issuer; <code>"GivenName FamilyName"</code>
   * @param issueInstant current timestamp
   * @param authURL URL of MOA-ID authentication component
   * @param target "Gesch&auml;ftsbereich"
   * @param oaURL public URL of online application requested
   * @return String representation of authentication block 
   *          <code>&lt;saml:Assertion&gt;</code> built
   */
  public String build(String issuer, String issueInstant, String authURL, String target, String oaURL) {
  	String assertion = MessageFormat.format(
  		AUTH_BLOCK, new Object[] { issuer, issueInstant, authURL, target, oaURL });
	  return assertion;
  }

}