/*******************************************************************************
 * 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.config.stork;

import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.Set;

import at.gv.egovernment.moa.id.commons.api.IStorkConfig;
import at.gv.egovernment.moa.id.commons.api.data.CPEPS;
import at.gv.egovernment.moa.id.commons.api.data.SignatureCreationParameter;
import at.gv.egovernment.moa.id.commons.api.data.SignatureVerificationParameter;
import at.gv.egovernment.moa.id.commons.api.data.StorkAttribute;
import at.gv.egovernment.moa.id.commons.api.exceptions.ConfigurationException;
import at.gv.egovernment.moa.id.commons.config.MOAIDConfigurationConstants;
import at.gv.egovernment.moa.id.config.auth.AuthConfigurationProviderFactory;
import at.gv.egovernment.moa.logging.Logger;
import at.gv.egovernment.moa.util.MiscUtil;
import at.gv.egovernment.moa.util.StringUtils;

/**
 * Encapsulates several STORK configuration parameters according MOA configuration
 *
 * @author bzwattendorfer
 *
 */
public class STORKConfig implements IStorkConfig {

	/** STORK SAML signature creation parameters */
	private Properties props = null;
	private Map<String, CPEPS> cpepsMap  = new HashMap<String, CPEPS>();
	private String basedirectory = null;
	private SignatureVerificationParameter sigverifyparam = null;
	private List<StorkAttribute> attr = null;


	public STORKConfig(Properties props, String basedirectory) throws ConfigurationException {
		this.basedirectory = basedirectory;
		this.props = props;

		//create CPEPS map
        List<CPEPS> cpeps = new ArrayList<CPEPS>();
        
        Map<String, String> storkCPEPSProps = 
        		AuthConfigurationProviderFactory.getInstance().getConfigurationWithPrefix(
        				MOAIDConfigurationConstants.GENERAL_AUTH_STORK_CPEPS_LIST + ".");
        if (storkCPEPSProps != null) {
        	Set<String> keyValues = storkCPEPSProps.keySet();
        	for (Object elObj : keyValues) {
        		if (elObj instanceof String) {
        			String el = (String) elObj;
        			if (el.endsWith(MOAIDConfigurationConstants.GENERAL_AUTH_STORK_CPEPS_LIST_COUNTRY)) {
        				int index = el.indexOf(".");
        				String listCounter = el.substring(0, index);
        				
        				if (MiscUtil.isNotEmpty(storkCPEPSProps.get(listCounter + "." + MOAIDConfigurationConstants.GENERAL_AUTH_STORK_CPEPS_LIST_COUNTRY))) {
        					try {
        						
        						//Assertion encryption is enabled by default
        						boolean enableAssertionEncryption = true;
        						String enableAssertionEncryptionString = storkCPEPSProps.get(listCounter + "." + MOAIDConfigurationConstants.GENERAL_AUTH_STORK_CPEPS_LIST_SUPPORT_XMLDSIG);
        						if (MiscUtil.isNotEmpty(enableAssertionEncryptionString)) {
        							enableAssertionEncryption = Boolean.parseBoolean(enableAssertionEncryptionString);
        							
        						}
        						        						
        						CPEPS moacpep = 
        								new CPEPS(storkCPEPSProps.get(listCounter + "." + MOAIDConfigurationConstants.GENERAL_AUTH_STORK_CPEPS_LIST_COUNTRY), 
        										new URL(storkCPEPSProps.get(listCounter + "." + MOAIDConfigurationConstants.GENERAL_AUTH_STORK_CPEPS_LIST_URL)), 
        										enableAssertionEncryption);
        						cpepsMap.put(moacpep.getCountryCode(), moacpep);
        					
        					} catch (MalformedURLException e) {
        						Logger.warn("CPEPS URL " + 
        								storkCPEPSProps.get(listCounter + "." + MOAIDConfigurationConstants.GENERAL_AUTH_STORK_CPEPS_LIST_URL) + 
        								" are not parseable.", e);
        						
        					}
        				}
        			}
        		}
        	}
        }
        
        attr = new ArrayList<StorkAttribute>();
        Map<String, String> storkAttributeProps = 
        		AuthConfigurationProviderFactory.getInstance().getConfigurationWithPrefix(
        				MOAIDConfigurationConstants.GENERAL_AUTH_STORK_ATTRIBUTES_LIST);
        if (storkAttributeProps != null) {
        	Set<String> keyValues = storkAttributeProps.keySet();
        	for (Object elObj : keyValues) {
        		if (elObj instanceof String) {
        			String el = (String) elObj;
        			if (el.endsWith(MOAIDConfigurationConstants.GENERAL_AUTH_STORK_ATTRIBUTES_LIST_NAME)) {
        				int index = el.indexOf(".");
        				String listCounter = el.substring(0, index);
       					StorkAttribute moaStorkAttr = 
       							new StorkAttribute(storkAttributeProps.get(listCounter + "." + MOAIDConfigurationConstants.GENERAL_AUTH_STORK_ATTRIBUTES_LIST_NAME),  
       										Boolean.valueOf(storkAttributeProps.get(listCounter + "." + MOAIDConfigurationConstants.GENERAL_AUTH_STORK_ATTRIBUTES_LIST_MANDATORY)));
       					attr.add(moaStorkAttr);
        			}
        		}
        	}
        }
	}

	/* (non-Javadoc)
	 * @see at.gv.egovernment.moa.id.config.stork.IStorkConfig#getSignatureCreationParameter()
	 */
	@Override
	public SignatureCreationParameter getSignatureCreationParameter() {

		return new SignatureCreationParameter(props, basedirectory);
	}

	/* (non-Javadoc)
	 * @see at.gv.egovernment.moa.id.config.stork.IStorkConfig#getSignatureVerificationParameter()
	 */
	@Override
	public SignatureVerificationParameter getSignatureVerificationParameter() {

		return sigverifyparam;
	}

	/* (non-Javadoc)
	 * @see at.gv.egovernment.moa.id.config.stork.IStorkConfig#getCpepsMap()
	 */
	@Override
	public Map<String, CPEPS> getCpepsMap() {
		return cpepsMap;
	}

	/* (non-Javadoc)
	 * @see at.gv.egovernment.moa.id.config.stork.IStorkConfig#isSTORKAuthentication(java.lang.String)
	 */
	@Override
	public boolean isSTORKAuthentication(String ccc) {

		  if (StringUtils.isEmpty(ccc) || this.cpepsMap.isEmpty())
			  return false;

		  if (this.cpepsMap.containsKey(ccc.toUpperCase()))
			  return true;
		  else
			  return false;

	}

	/* (non-Javadoc)
	 * @see at.gv.egovernment.moa.id.config.stork.IStorkConfig#getCPEPS(java.lang.String)
	 */
	@Override
	public CPEPS getCPEPS(String ccc) {
		if (isSTORKAuthentication(ccc))
			return this.cpepsMap.get(ccc);
		else
			return null;
	}

	/* (non-Javadoc)
	 * @see at.gv.egovernment.moa.id.config.stork.IStorkConfig#getStorkAttributes()
	 */
	@Override
	public List<StorkAttribute> getStorkAttributes() {
		return attr;
	}
}