package dk.hansen;

import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;

public class SimpleDVDManager implements DVDManagerIF {

   private static HashMap dvds = new HashMap();
   static {
      System.out.println("SimpleDVDManager created - static code");
      // Create some DVDs for testing
      DVD dvd;
      String id;
      String title;

      id = "ID10";
      title = "Troy";
      dvd = new DVD(id, title);
      dvds.put(id, dvd);

      id = "ID11";
      title = "Peter Pan";
      dvd = new DVD(id, title);
      dvds.put(id, dvd);
   }
      
   public void createDVD(String id, String title) throws DAOException {
      DVD dvd = (DVD)dvds.get(id);
      if (dvd != null) throw new DAOException("Id " + id + " is already used");
      dvd = new DVD(id, title);
      dvds.put(id, dvd);
   }

   public void updateDVD(String id, String title) throws DAOException {
      DVD dvd = (DVD)dvds.get(id);
      if (dvd == null) throw new DAOException("Id " + id + " was not found");
      dvd.setTitle(title);
   }

   public void deleteDVD(String id) throws DAOException {
      DVD dvd = (DVD)dvds.get(id);
      if (dvd == null) throw new DAOException("Id " + id + " was not found");
      dvds.remove(id);
   }

   public DVD getDVD(String id) throws DAOException {
      DVD dvd = (DVD)dvds.get(id);
      return dvd;
   }

   public Collection getAll() {
      return dvds.values();
   }

   public Collection findDVDTitle(String title) {
      Collection hits = new ArrayList(); 
      Collection c = dvds.values();
      for (Iterator it = c.iterator(); it.hasNext();) {
         DVD dvd = (DVD)it.next();
         if (dvd.getTitle().toUpperCase().indexOf(title.toUpperCase()) > -1) {
            hits.add(dvd);
         }
      }
      return hits;
   }
}