/**
    * Copyright 2011-2013 The Kuali Foundation Licensed under the
    * Educational Community License, Version 2.0 (the "License"); you may
    * not use this file except in compliance with the License. You may
    * obtain a copy of the License at
    *
    * http://www.osedu.org/licenses/ECL-2.0
    *
    * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an "AS IS"
   * BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
   * or implied. See the License for the specific language governing
   * permissions and limitations under the License.
   */
  
  package org.kuali.mobility.security.authn.util;
  
  import java.io.InputStream;
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Properties;
  
  import org.apache.log4j.Logger;
  
  public class AuthenticationMapper {
  	Logger LOG = Logger.getLogger( AuthenticationMapper.class );
  
  	private String loginURL;
  	private String logoutURL;
  	
  	private List<String> urlPatterns;
  	
  	public AuthenticationMapper( final String configFilePath )
  	{
  		urlPatterns = new ArrayList<String>();
  		try {
  			readProperties( configFilePath );
  		} catch (Exception e) {
  			LOG.error( "Unable to load configuration file: "+configFilePath+"\n"+e.getLocalizedMessage() );
  		}
  	}
  	
  	public boolean requiresAuthentication( final String url )
  	{
  		boolean requiresAuthN = false;
  		for( String pattern : getUrlPatterns() )
  		{
  			if( url.startsWith(pattern) )
  			{
  				requiresAuthN = true;
  			}
  		}
  		return requiresAuthN;
  	}
  
  	public String getLoginURL() {
  		return loginURL;
  	}
  
  	public void setLoginURL(String loginURL) {
  		this.loginURL = loginURL;
  	}
  
  	public String getLogoutURL() {
  		return logoutURL;
  	}
  
  	public void setLogoutURL(String logoutURL) {
  		this.logoutURL = logoutURL;
  	}
  
  	public List<String> getUrlPatterns() {
  		return urlPatterns;
  	}
  
  	public void setUrlPatterns(List<String> urlPatterns) {
  		this.urlPatterns = urlPatterns;
  	}
  	
  	public void readProperties(final String configFilePath) throws Exception {
  		Properties properties = new Properties();
  		InputStream is = this.getClass().getResourceAsStream( configFilePath );
  		properties.loadFromXML(is);
  		
  		for( Object s : properties.keySet() )
  		{
  			LOG.debug( "Loading property "+(String)s+" = "+properties.getProperty( (String)s ) );
  			if( ((String)s).startsWith( AuthenticationConstants.AUTH_PATH_PREFIX ) )
  			{
  				this.urlPatterns.add( properties.getProperty( (String)s ) );
  			}
  			else if( "loginURL".equalsIgnoreCase( (String)s ) )
  			{
  				this.setLoginURL( properties.getProperty((String) s) );
  			}
  			else if( "logoutURL".equalsIgnoreCase( (String)s ) )
  			{
  				this.setLogoutURL( properties.getProperty((String) s) );
  			}
 		}
 	}
 }