/*
 * Copyright 2014 Federal Chancellery Austria
 * MOA-ID has been developed in a cooperation between BRZ, the Federal
 * Chancellery Austria - ICT staff unit, and Graz University of Technology.
 *
 * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
 * the European Commission - subsequent versions of the EUPL (the "Licence");
 * You may not use this work except in compliance with the Licence.
 * You may obtain a copy of the Licence at:
 * http://www.osor.eu/eupl/
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the Licence is distributed on an "AS IS" basis,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the Licence for the specific language governing permissions and
 * limitations under the Licence.
 *
 * This product combines work with different licenses. See the "NOTICE" text
 * file for details on the various modules and licenses.
 * The "NOTICE" text file is part of the distribution. Any derivative works
 * that you distribute must include a readable copy of the "NOTICE" text file.
 */
package at.gv.egovernment.moa.id.auth.builder;

import java.lang.reflect.InvocationTargetException;
import java.util.List;

import org.opensaml.saml2.core.Attribute;

import at.gv.egiz.eaaf.core.api.IRequest;
import at.gv.egiz.eaaf.core.api.data.PVPAttributeDefinitions;
import at.gv.egovernment.moa.id.auth.exception.DynamicOABuildException;
import at.gv.egovernment.moa.id.commons.api.IOAAuthParameters;
import at.gv.egovernment.moa.id.commons.api.exceptions.ConfigurationException;
import at.gv.egovernment.moa.id.config.auth.data.DynamicOAAuthParameters;
import at.gv.egovernment.moa.logging.Logger;
import at.gv.egovernment.moa.util.Constants;

/**
 * @author tlenz
 *
 */
public class DynamicOAAuthParameterBuilder {

	public static IOAAuthParameters buildFromAttributeQuery(List<Attribute> reqAttributes) throws DynamicOABuildException {

		Logger.debug("Build dynamic OAConfiguration from AttributeQuery and interfederation information");
		
		DynamicOAAuthParameters dynamicOA = new DynamicOAAuthParameters();
				
		for (Attribute attr : reqAttributes) {				
			//get Target or BusinessService from request 
			if (attr.getName().equals(PVPAttributeDefinitions.EID_SECTOR_FOR_IDENTIFIER_NAME)) {
				String attrValue = attr.getAttributeValues().get(0).getDOM().getTextContent();
				if (attrValue.startsWith(Constants.URN_PREFIX_CDID)) {
					//dynamicOA.setBusinessService(false);
					dynamicOA.setAreaSpecificTargetIdentifier(attrValue);
					
				} else if( attrValue.startsWith(Constants.URN_PREFIX_WBPK) || 
						attrValue.startsWith(Constants.URN_PREFIX_STORK) || 
						attrValue.startsWith(Constants.URN_PREFIX_EIDAS)) {
					//dynamicOA.setBusinessService(true);
					dynamicOA.setAreaSpecificTargetIdentifier(attrValue);
					 					
				} else {
					Logger.error("Sector identification " + attrValue + " is not a valid Target or BusinessServiceArea");
					throw new DynamicOABuildException("Sector identification " + attrValue + " is not a valid Target or BusinessServiceArea", null);
					
				}
				
			}
			
		}			
		return dynamicOA;

		
		
	}

	/**
	 * @param oaParam
	 * @param protocolRequest
	 * @return
	 * @throws ConfigurationException 
	 */
	public static IOAAuthParameters buildFromAuthnRequest(
			IOAAuthParameters oaParam, IRequest protocolRequest) throws ConfigurationException {
		
		DynamicOAAuthParameters dynOAParams = new DynamicOAAuthParameters();
		dynOAParams.setApplicationID(oaParam.getPublicURLPrefix());
		dynOAParams.setHasBaseIdProcessingRestriction(oaParam.hasBaseIdInternalProcessingRestriction());
		dynOAParams.setHasBaseIdTransfergRestriction(oaParam.hasBaseIdTransferRestriction());
		
		Object storkRequst = null;
		try {
			storkRequst = Class.forName("at.gv.egovernment.moa.id.protocols.stork2.MOASTORKRequest").newInstance();
			if (storkRequst != null && 
					protocolRequest.getClass().isInstance(storkRequst)) {
				
				dynOAParams.setAreaSpecificTargetIdentifier(Constants.URN_PREFIX_STORK + "+" + "AT" + "+" 
						+ protocolRequest.getClass().getMethod("getSpCountry", null).invoke(protocolRequest, null));
				//dynOAParams.setBusinessService(true);
								
			}
									
		} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | IllegalArgumentException | InvocationTargetException | NoSuchMethodException | java.lang.SecurityException ex) {
			
			
		}
		
//		if (protocolRequest instanceof MOASTORKRequest)
//			return buildFromSTORKRequest(dynOAParams, (MOASTORKRequest) protocolRequest);
		
		Logger.warn("Dynamic OA generation failed. RequestType is not implemented.");
		return null;
	}

}