package dk.hansen;

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

public class SimpleVhsManager implements VhsManagerIF {

   private static HashMap vhss = new HashMap();
   static {
      System.out.println("SimpleVhsManager created - static code");
      // Create some Vhss for testing
      Vhs vhs;
      String id;
      int year;
      String title;
      int tapeLength;

      id = "ID33";
      year = 1985;
      title = "Who knows this movie?";
      tapeLength = 240;
      vhs = new Vhs(id, year, title, tapeLength);
      vhss.put(id, vhs);

      id = "ID34";
      year = 1999;
      title = "I know this movie!";
      tapeLength = 120;
      vhs = new Vhs(id, year, title, tapeLength);
      vhss.put(id, vhs);

      id = "ID35";
      year = 2001;
      title = "I know it as well!";
      tapeLength = 140;
      vhs = new Vhs(id, year, title, tapeLength);
      vhss.put(id, vhs);
   }
      
   public void createVhs(String id, int year, String title, int tapeLength) throws DAOException {
      Vhs vhs = (Vhs)vhss.get(id);
      if (vhs != null) throw new DAOException("Id " + id + " is already used");
      vhs = new Vhs(id, year, title, tapeLength);
      vhss.put(id, vhs);
   }

   public void updateVhs(String id, int year, String title, int tapeLength) throws DAOException {
      Vhs vhs = (Vhs)vhss.get(id);
      if (vhs == null) throw new DAOException("Id " + id + " was not found");
      vhs.setYear(year);
      vhs.setTitle(title);
      vhs.setTapeLength(tapeLength);
   }

   public void deleteVhs(String id) throws DAOException {
      Vhs vhs = (Vhs)vhss.get(id);
      if (vhs == null) throw new DAOException("Id " + id + " was not found");
      vhss.remove(id);
   }

   public Vhs getVhs(String id) throws DAOException {
      Vhs vhs = (Vhs)vhss.get(id);
      return vhs;
   }

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

   public Collection findVhsTitle(String title) {
      Collection hits = new ArrayList(); 
      Collection c = vhss.values();
      for (Iterator it = c.iterator(); it.hasNext();) {
         Vhs vhs = (Vhs)it.next();
         if (vhs.getTitle().toUpperCase().indexOf(title.toUpperCase()) > -1) {
            hits.add(vhs);
         }
      }
      return hits;
   }
   public Collection findVhsYear(int year) {
      Collection hits = new ArrayList(); 
      Collection c = vhss.values();
      for (Iterator it = c.iterator(); it.hasNext();) {
         Vhs vhs = (Vhs)it.next();
         if (vhs.getYear() == year) {
            hits.add(vhs);
         }
      }
      return hits;
   }
}