/*
 * 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.webgui;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.Properties;

import org.opensaml.DefaultBootstrap;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;

import at.gv.egiz.eaaf.core.impl.utils.FileUtils;
import at.gv.egovernment.moa.id.commons.config.MOAIDConfigurationConstants;
import at.gv.egovernment.moa.id.config.webgui.exception.ConfigurationException;
import at.gv.egovernment.moa.util.MiscUtil;

/**
 * @author tlenz
 *
 */
@Service
public class MOAIDWebGUIConfiguration  {

	private static final String SYSTEM_PROP_CONFIG = "moa.id.webconfig";
	
	private static final Logger log = LoggerFactory.getLogger(MOAIDWebGUIConfiguration.class);
	
	
	
	private Properties props;
	private String configFileName;
	private String configRootDir;
	
	/* (non-Javadoc)
	 * @see at.gv.egovernment.moa.id.commons.config.persistence.LocalConfigurationBean#getLocalDatabaseProperties()
	 */
	
	private static MOAIDWebGUIConfiguration instance = null;
	
	public static MOAIDWebGUIConfiguration getInstance() throws ConfigurationException {
		if (instance == null) {
			instance = new MOAIDWebGUIConfiguration();
			
		}		
		return instance;
	}
	
	
	MOAIDWebGUIConfiguration() throws ConfigurationException {	
		configFileName = System.getProperty(SYSTEM_PROP_CONFIG);
		
	    if (configFileName == null) {
	        throw new ConfigurationException("config.05");
	    }
		try {
			URI fileURI = new URI(configFileName);
	    
			// determine the directory of the root config file
			configRootDir = new File(fileURI).getParent();	
	    
			log.info("Loading MOA-ID WebGUI configuration from file " + fileURI);
	   			
			//Load MOAID-2.0 properties file
			
			File propertiesFile = new File(fileURI);
			FileInputStream fis;
			props = new Properties();
	
			fis = new FileInputStream(propertiesFile);
			props.load(fis);
			
			fis.close();
						
			log.debug("OpenSAML initialization started ...");
			DefaultBootstrap.bootstrap();
			log.info("OpenSAML initialization complete.");
	
			log.info("Pre-Initialization step of MOA-ID WebGUI module finished ... ");
			
							
		} catch (FileNotFoundException e) {
			throw new ConfigurationException("config.01", new Object[]{configFileName},  e);
			
		} catch (IOException e) {
			throw new ConfigurationException("config.02", new Object[]{configFileName}, e);
			
		} catch (org.opensaml.xml.ConfigurationException e) {
			throw new ConfigurationException("config.04", e);
			
		} catch (URISyntaxException e) {
			throw new ConfigurationException("config.06", new Object[]{MOAIDConfigurationConstants.FILE_URI_PREFIX, configFileName},  e);
			
		}
	}
	
//	@Override
//	protected Properties getLocalDatabaseProperties() {
//		return this.props;
//	}

	public String getConfigFile() {
		return configFileName;
	}
	
	public String getConfigRootDir() {
		return configRootDir;
	}
	
	public String getCertStoreDirectory() throws ConfigurationException {
		String dir = props.getProperty("general.ssl.certstore");
		if (MiscUtil.isNotEmpty(dir))
				return FileUtils.makeAbsoluteURL(dir, configRootDir);
		
		else
			throw new ConfigurationException("No SSLCertStore configured use default JAVA TrustStore.");
		
	}
	
	public String getTrustStoreDirectory() throws ConfigurationException {
		String dir = props.getProperty("general.ssl.truststore");
		if (MiscUtil.isNotEmpty(dir))
				return FileUtils.makeAbsoluteURL(dir, configRootDir);
		
		else
			throw new ConfigurationException("No SSLTrustStore configured use default JAVA TrustStore.");
		
	}
	
	public boolean isPVPMetadataSchemaValidationActive() {
		return Boolean.parseBoolean(props.getProperty("general.pvp.schemavalidation", "true"));
				
	}
	
}