/*******************************************************************************
 * 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.configuration.data.oa;

import java.util.ArrayList;
import java.util.List;

import javax.servlet.http.HttpServletRequest;

import org.apache.log4j.Logger;

import at.gv.egovernment.moa.id.commons.db.ConfigurationDBRead;
import at.gv.egovernment.moa.id.commons.db.dao.config.AttributeProviderPlugin;
import at.gv.egovernment.moa.id.commons.db.dao.config.AuthComponentOA;
import at.gv.egovernment.moa.id.commons.db.dao.config.CPEPS;
import at.gv.egovernment.moa.id.commons.db.dao.config.OASTORK;
import at.gv.egovernment.moa.id.commons.db.dao.config.OAStorkAttribute;
import at.gv.egovernment.moa.id.commons.db.dao.config.OnlineApplication;
import at.gv.egovernment.moa.id.commons.db.dao.config.StorkAttribute;
import at.gv.egovernment.moa.id.configuration.auth.AuthenticatedUser;
import at.gv.egovernment.moa.id.configuration.validation.oa.OASTORKConfigValidation;
import at.gv.egovernment.moa.id.protocols.stork2.AttributeProviderFactory;

public class OASTORKConfig implements IOnlineApplicationData{

	private static final Logger log = Logger.getLogger(OASTORKConfig.class);
	
	private boolean isStorkLogonEnabled = false;
	private int qaa;

	private List<AttributeHelper> attributes = null;

	/*
	 * VIDP settings below
	 */
	private boolean vidpEnabled = false;
	private List<AttributeProviderPlugin> attributeProviderPlugins = new ArrayList<AttributeProviderPlugin>();
	private boolean requireConsent = false;
	private List<String> citizenCountries;
	private List<String> enabledCitizenCountries;
	
	public OASTORKConfig() {
		// fetch available citizen countries
		citizenCountries = new ArrayList<String>();
		try {
			for(CPEPS current : ConfigurationDBRead.getMOAIDConfiguration().getAuthComponentGeneral().getForeignIdentities().getSTORK().getCPEPS()) {
				citizenCountries.add(current.getCountryCode());
			}
			
		}catch (NullPointerException e) {
			
		}
		
	}

	/* (non-Javadoc)
	 * @see at.gv.egovernment.moa.id.configuration.data.oa.IOnlineApplicationData#getName()
	 */
	@Override
	public String getName() {
		return "OASTORK2";
	}
	
	/**
	 * Parses the OA config for stork entities.
	 *
	 * @param dbOAConfig
	 *            the db oa config
	 */
	public List<String> parse(OnlineApplication dbOAConfig, AuthenticatedUser authUser, HttpServletRequest request) {
		AuthComponentOA authdata = dbOAConfig.getAuthComponentOA();
		if (authdata != null) {
			OASTORK config = authdata.getOASTORK();
			if(config != null) {
				setStorkLogonEnabled(config.isStorkLogonEnabled());

				try {
					setQaa(config.getQaa());
				} catch(NullPointerException e) {
					// if there is no configuration available for the OA, get the default qaa level
					setQaa(ConfigurationDBRead.getMOAIDConfiguration().getAuthComponentGeneral().getForeignIdentities().getSTORK().getQualityAuthenticationAssuranceLevel());
				}
				

				enabledCitizenCountries = new ArrayList<String>();
				for(CPEPS current : config.getCPEPS())
					enabledCitizenCountries.add(current.getCountryCode());

				// prepare attribute helper list
				attributes = new ArrayList<AttributeHelper>();
                try {
				for(StorkAttribute current : ConfigurationDBRead.getMOAIDConfiguration().getAuthComponentGeneral().getForeignIdentities().getSTORK().getAttributes()) {
					AttributeHelper tmp = null;

					for(OAStorkAttribute sepp : config.getOAAttributes())
						if(sepp.getName().equals(current.getName()))
							tmp = new AttributeHelper(sepp);

					if(null == tmp)
						tmp = new AttributeHelper(current);

					attributes.add(tmp);
				}
				
				// fetch vidp config
				if (config.isVidpEnabled() != null)
					setVidpEnabled(config.isVidpEnabled());
				else
					setVidpEnabled(false);
				
				if (config.isRequireConsent() != null)
					setRequireConsent(config.isRequireConsent());
				else
					setRequireConsent(false);

				attributeProviderPlugins = config.getAttributeProviders();
				// - if no attribute providers are configured, add a dummy
				// TODO this is a dirty hack since we have to have one entry to
				// clone from in the web form. Happens when time is short.
				// Sorry.
				if (attributeProviderPlugins.isEmpty())
					attributeProviderPlugins.add(new AttributeProviderPlugin());
				} catch (NullPointerException ex) {
                    log.error("Nullpointerexception encountered in Configurationinterface", ex);
                }
			}
		}
		
		return null;
	}


	/* (non-Javadoc)
	 * @see at.gv.egovernment.moa.id.configuration.data.oa.IOnlineApplicationData#validate(at.gv.egovernment.moa.id.configuration.data.oa.OAGeneralConfig, javax.servlet.http.HttpServletRequest)
	 */
	@Override
	public List<String> validate(OAGeneralConfig general, AuthenticatedUser authUser,
			HttpServletRequest request) {
		return new OASTORKConfigValidation().validate(this, request);
	}
	
	/* (non-Javadoc)
	 * @see at.gv.egovernment.moa.id.configuration.data.oa.IOnlineApplicationData#store(at.gv.egovernment.moa.id.commons.db.dao.config.OnlineApplication, at.gv.egovernment.moa.id.configuration.auth.AuthenticatedUser, javax.servlet.http.HttpServletRequest)
	 */
	@Override
	public String store(OnlineApplication dbOA, AuthenticatedUser authUser,
			HttpServletRequest request) {
        AuthComponentOA authoa = dbOA.getAuthComponentOA();
        if (authoa == null) {
            authoa = new AuthComponentOA();
            dbOA.setAuthComponentOA(authoa);
        }
        
        // fetch stork configuration from database model
        OASTORK stork = authoa.getOASTORK();
        if (stork == null) {
            // if there is none, create a new one with default values.
            stork = new OASTORK();
            authoa.setOASTORK(stork);
            stork.setStorkLogonEnabled(false);
        }
        // transfer the incoming data to the database model
        stork.setStorkLogonEnabled(isStorkLogonEnabled());
        stork.setQaa(getQaa());
        stork.setOAAttributes(getAttributes());
        stork.setVidpEnabled(isVidpEnabled());
        stork.setRequireConsent(isRequireConsent());
        stork.setAttributeProviders(getAttributeProviderPlugins());
        stork.setCPEPS(getEnabledCPEPS());
        
        return null;
        
	}
	
	public boolean isStorkLogonEnabled() {
		return isStorkLogonEnabled;
	}

	public void setStorkLogonEnabled(boolean enabled) {
		this.isStorkLogonEnabled = enabled;
	}

	public int getQaa() {
		return qaa;
	}

	public void setQaa(int qaa) {
		this.qaa = qaa;
	}

	public List<OAStorkAttribute> getAttributes() {
		List<OAStorkAttribute> result = new ArrayList<OAStorkAttribute>();

		if(null == getHelperAttributes())
			return result;

		for(AttributeHelper current : getHelperAttributes()) {
			for(StorkAttribute currentAttribute : ConfigurationDBRead.getMOAIDConfiguration().getAuthComponentGeneral().getForeignIdentities().getSTORK().getAttributes())
				if(currentAttribute.getName().equals(current.getName())) {
					if(current.isUsed() || currentAttribute.isMandatory()) {
						OAStorkAttribute tmp = new OAStorkAttribute();
						tmp.setName(current.getName());
						tmp.setMandatory(current.isMandatory());
						result.add(tmp);
					}
					break;
				}
		}

		return result;
	}

	public List<AttributeHelper> getHelperAttributes() {
		return attributes;
	}

	public void setHelperAttributes(List<AttributeHelper> attributes) {
		this.attributes = attributes;
	}
	
	public List<String> getAvailableCitizenCountries() {
		return citizenCountries;
	}
	
	public List<String> getEnabledCitizenCountries() {
		return enabledCitizenCountries;
	}
	
	public void setEnabledCitizenCountries(List<String> update) {
		enabledCitizenCountries = update;
	}
	
	public List<CPEPS> getEnabledCPEPS() {
		if (enabledCitizenCountries != null) {
			List<CPEPS> result = new ArrayList<CPEPS>();
			
			try {
				for(CPEPS current : ConfigurationDBRead.getMOAIDConfiguration().getAuthComponentGeneral().getForeignIdentities().getSTORK().getCPEPS()) {
					if(enabledCitizenCountries.contains(current.getCountryCode()))
						result.add(current);
				}
				
			} catch (NullPointerException e){
				
			}
			return result;
		}
		
		return null;
		
	}
	
	public List<String> getAvailableAttributeProviderPlugins() {
		return AttributeProviderFactory.getAvailablePlugins();
	}
	
	public List<AttributeProviderPlugin> getAttributeProviderPlugins() {
		return attributeProviderPlugins;
	}
	
	public void setAttributeProviderPlugins(List<AttributeProviderPlugin> update) {
		attributeProviderPlugins = update;
	}

	public boolean isVidpEnabled() {
		return vidpEnabled;
	}
	
	public void setVidpEnabled(boolean update) {
		vidpEnabled = update;
	}
	
	public boolean isRequireConsent() {
		return requireConsent;
	}
	
	public void setRequireConsent(boolean update) {
		requireConsent = update;
	}
}