/*
 * 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.modules.internal.tasks;

import java.io.PrintWriter;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.stereotype.Component;

import at.gv.egovernment.moa.id.advancedlogging.MOAIDEventConstants;
import at.gv.egovernment.moa.id.auth.builder.SendAssertionFormBuilder;
import at.gv.egovernment.moa.id.auth.exception.MOAIDException;
import at.gv.egovernment.moa.id.auth.modules.AbstractAuthServletTask;
import at.gv.egovernment.moa.id.auth.modules.TaskExecutionException;
import at.gv.egovernment.moa.id.process.api.ExecutionContext;
import at.gv.egovernment.moa.logging.Logger;

/**
 * Build a Single Sign-On consents evaluator form
 * 
 * @author tlenz
 *
 */
@Component("GenerateSSOConsentEvaluatorFrameTask")
public class GenerateSSOConsentEvaluatorFrameTask extends AbstractAuthServletTask {

	/* (non-Javadoc)
	 * @see at.gv.egovernment.moa.id.process.springweb.MoaIdTask#execute(at.gv.egovernment.moa.id.process.api.ExecutionContext, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
	 */
	@Override
	public void execute(ExecutionContext executionContext, HttpServletRequest request, HttpServletResponse response)
			throws TaskExecutionException {
		try {
			//perform default task initialization 
			defaultTaskInitialization(request, executionContext);
									
			//set authenticated flag to false, because user consents is required
			pendingReq.setAuthenticated(false);
		
			//build consents evaluator form
			String form = SendAssertionFormBuilder.buildForm(pendingReq);

			//store pending request
			requestStoreage.storePendingRequest(pendingReq);
			
			//Log consents evaluator event to revisionslog
			revisionsLogger.logEvent(pendingReq.getOnlineApplicationConfiguration(), 
					pendingReq, MOAIDEventConstants.AUTHPROCESS_SSO_ASK_USER_START);
			
			//write form to response object
			response.setContentType("text/html;charset=UTF-8");
			PrintWriter out = new PrintWriter(response.getOutputStream()); 
			out.print(form);
			out.flush();
			
			
		} catch (MOAIDException e) {
			throw new TaskExecutionException(pendingReq, e.getMessage(), e);
			
		} catch (Exception e) {
			Logger.warn("FinalizeAuthenticationTask has an internal error", e);
			throw new TaskExecutionException(pendingReq, e.getMessage(), e);
			
		}

	}

}