package antipatterns.model;

import antipatterns.ejbs.*;

import java.util.*;
import javax.naming.*;
import javax.naming.directory.*;
import javax.servlet.http.*;

public class LdapPersonCommand implements PersonCommand {
    private DirContext peopleContext;
    
    private Vector people;
    
    private String firstName;
    private String lastName;
    
    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }
    
    public void setLastName(String lastName) {
        this.lastName = lastName;
    }
    
    public void initialize(HttpSession session) throws NamingException {
        Properties env = new Properties();
        env.put(Context.INITIAL_CONTEXT_FACTORY,
            "com.sun.jndi.ldap.LdapCtxFactory");
        env.put(Context.PROVIDER_URL, "ldap://localhost/o=jndiTest");
        env.put(Context.SECURITY_PRINCIPAL, "cn=Manager, o=jndiTest");
        env.put(Context.SECURITY_CREDENTIALS, "secret");
        
        DirContext initalContext = new InitialDirContext(env);
        peopleContext = (DirContext)initalContext.lookup("ou=people");
    
        people = new Vector();
    }
    
    public void runCommand() throws NamingException {
        String filter = "(objectclass=person)";
              
        if (firstName != null && lastName != null) {
            filter = "& (cn=" + firstName + ") (sn=" + lastName + ")";
        } else if (firstName != null) {
            filter = "cn=" + firstName; 
        } else if(lastName != null) {
            filter = "sn=" + lastName;
        }
        
        System.out.println("filter = " + filter);
        
        SearchControls sc = new SearchControls();
        sc.setSearchScope(SearchControls.ONELEVEL_SCOPE);
      
        NamingEnumeration peopleEnum = peopleContext.search("", filter, sc);
        while(peopleEnum.hasMore()) {
            NameClassPair personName = (NameClassPair)peopleEnum.next();
            Attributes personAttrs = 
                peopleContext.getAttributes(personName.getName());
            Attribute cn = personAttrs.get("cn");
            Attribute sn = personAttrs.get("sn");
            Attribute phone = personAttrs.get("telephoneNumber");
        
            people.add(new Person((String)cn.get(), 
                                  (String)sn.get(), 
                                  (String)phone.get()));
         }
        
         peopleContext.close();
    }
    
    public List getPeople() {
        return people;
    }
}