package at.knowcenter.wag.egov.egiz.ldap.client;

import iaik.asn1.structures.Name;
import iaik.utils.RFC2253NameParser;
import iaik.utils.RFC2253NameParserException;

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

import org.apache.log4j.Logger;

/**
 * @author <a href="mailto:thomas.knall@iaik.tugraz.at">Thomas Knall</a>
 */
public class LDAPMappingStore {
	
//	private Hashtable<Name, LDAPMapping> storedMappings;
	private Hashtable storedMappings;
	private LDAPIssuerNameFilter issuerNameFilter;
	private Logger log = Logger.getLogger(getClass());
	
	public LDAPMappingStore(LDAPIssuerNameFilter issuerNameFilter) {
		this.storedMappings = new Hashtable();
		this.issuerNameFilter = issuerNameFilter;
	}
	
	public LDAPMappingStore() {
		this(null);
	}
	
	public void clearStore() {
		this.storedMappings = new Hashtable();
	}
	
	public boolean isEmpty() {
		return this.storedMappings.isEmpty();
	}
	
	public boolean isLDAPIssuerNameFilter() {
		return this.issuerNameFilter != null;
	}
	
	public void addMapping(LDAPMapping mapping) {
		Name name = mapping.getIssuerName();
		if (issuerNameFilter != null) {
			name = this.issuerNameFilter.applyFilter(name);
		}
		List mappingList = (List) this.storedMappings.get(name);
      if (mappingList == null) {
         mappingList = new ArrayList();
         this.storedMappings.put(name, mappingList);
      }
      log.debug("Adding mapping \"" + mapping + "\" for \"" + name.getName() + "\".");
      mappingList.add(mapping);
	}

	public List getMappings(Name name) {
		if (issuerNameFilter != null) {
			name = this.issuerNameFilter.applyFilter(name);
		}
		return (List) this.storedMappings.get(name);
	}
	
	public List getMappings(String nameString) throws LDAPException {
		RFC2253NameParser parser = new RFC2253NameParser(nameString);
		Name name;
		try {
			name = parser.parse();
		} catch (RFC2253NameParserException e) {
			throw new LDAPException(e);
		}
		if (issuerNameFilter != null) {
			name = this.issuerNameFilter.applyFilter(name);
		}
		return this.getMappings(name);
	}
	
}