/*
    * $Source$
    * $Revision$
    *
    * Copyright (C) 2000 Tim Joyce
    *
    * Part of Melati (http://melati.org), a framework for the rapid
    * development of clean, maintainable web applications.
    *
   * Melati is free software; Permission is granted to copy, distribute
   * and/or modify this software under the terms either:
   *
   * a) the GNU General Public License as published by the Free Software
   *    Foundation; either version 2 of the License, or (at your option)
   *    any later version,
   *
   *    or
   *
   * b) any version of the Melati Software License, as published
   *    at http://melati.org
   *
   * You should have received a copy of the GNU General Public License and
   * the Melati Software License along with this program;
   * if not, write to the Free Software Foundation, Inc.,
   * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA to obtain the
   * GNU General Public License and visit http://melati.org to obtain the
   * Melati Software License.
   *
   * Feel free to contact the Developers of Melati (http://melati.org),
   * if you would like to work out a different arrangement than the options
   * outlined here.  It is our intention to allow Melati to be used by as
   * wide an audience as possible.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * Contact details for copyright holder:
   *
   *     Tim Joyce <timj At paneris.org>
   *     http://paneris.org/~timj
   */
  
  package org.melati.template;
  
  import java.util.Calendar;
  import java.sql.Date;
  import java.sql.Timestamp;
  
  import org.melati.poem.Field;
  import org.melati.poem.IntegerPoemType;
  import org.melati.poem.BaseFieldAttributes;
  import org.melati.poem.SQLPoemType;
  
  /**
   * An hour type.
   */
  class HourPoemType extends IntegerPoemType {
    /**
     * Constructor.
     * @param nullable whether null is an allowed value
     */
    public HourPoemType(boolean nullable) {
      super(nullable);
      setRawRange(new Integer(0), new Integer(24));
    }
  
    protected boolean _canRepresent(SQLPoemType<?> other) {
      return other instanceof HourPoemType;
    }
  
    /**
     * {@inheritDoc}
     * @see java.lang.Object#toString()
     */
    public String toString() {
      return super.toString() + " (hour)";
    }
  }
  
  /**
   * A minute type.
   */
  class MinutePoemType extends IntegerPoemType {
    /**
     * Constructor.
     * @param nullable whether null is an allowed value
     */
    public MinutePoemType(boolean nullable) {
      super(nullable);
      setRawRange(new Integer(0), new Integer(60));
    }
  
    protected boolean _canRepresent(SQLPoemType<?> other) {
      return other instanceof MinutePoemType;
    }
  
    /**
    * {@inheritDoc}
    * @see java.lang.Object#toString()
    */
   public String toString() {
     return super.toString() + " (minutes)";
   }
 }
 
 /**
  * A second.
  */
 class SecondPoemType extends IntegerPoemType {
   /**
    * Constructor.
    * @param nullable whether null is an allowed value
    */
   public SecondPoemType(boolean nullable) {
     super(nullable);
     setRawRange(new Integer(0), new Integer(60));
   }
 
   protected boolean _canRepresent(SQLPoemType<?> other) {
     return other instanceof SecondPoemType;
   }
 
   /**
    * {@inheritDoc}
    * @see java.lang.Object#toString()
    */
   public String toString() {
     return super.toString() + " (seconds)";
   }
 }
 
 
 /**
  * An adaptor for a string date in YMDHMST format.
  */
 public class YMDHMSTimestampAdaptor extends YMDDateAdaptor {
   private static final String
       hourSuffix = "-hour",
       minuteSuffix = "-minute",
       secondSuffix = "-second";
 
   private static final YMDHMSTimestampAdaptor me = new YMDHMSTimestampAdaptor();
 
   /**
    * @return the instance.
    */
   public static YMDHMSTimestampAdaptor getIt() {
     return me;
   }
 
   /**
    * {@inheritDoc}
    * @see org.melati.template.TempletAdaptor#rawFrom(
    *          org.melati.template.ServletTemplateContext, java.lang.String)
    */
   public Object rawFrom(ServletTemplateContext context, String fieldName) {
     String year = getFormOrDie(context, fieldName, yearSuffix);
     String month = getFormOrDie(context, fieldName, monthSuffix);
     String day = getFormOrDie(context, fieldName, daySuffix);
     String hour = getFormOrDie(context, fieldName, hourSuffix);
     String minute = getFormOrDie(context, fieldName, minuteSuffix);
     String second = getFormOrDie(context, fieldName, secondSuffix);
 
     if (year.equals("") && month.equals("") && day.equals("") &&
         hour.equals("") && minute.equals("") && second.equals(""))
       return null;
     else if (!year.equals("") && !month.equals("") && !day.equals("") &&
              !hour.equals("") && !minute.equals("") && !second.equals("")) {
       Calendar cal = Calendar.getInstance();
       cal.set(Integer.parseInt(year),
               Integer.parseInt(month) - 1,
               Integer.parseInt(day),
               Integer.parseInt(hour),
               Integer.parseInt(minute),
               Integer.parseInt(second));
       return new Timestamp(cal.getTime().getTime());
     } else {
       throw new PartlyNullException(fieldName);
     }
   }
 
   /**
    * @param field the field to copy
    * @return an hour field
    */
   public Field<Integer> hourField(Field<Date> field) {
 
     Calendar when = when(field);
 
     // This isn't meant to be used, so we don't try to localize it
 
     String displayName = field.getDisplayName() + " (hour)";
 
     return new Field<Integer>(
         when == null ? null : new Integer(when.get(Calendar.HOUR_OF_DAY)),
         new BaseFieldAttributes<Integer>(
             field.getName() + hourSuffix, displayName, null,
             field.getType().getNullable() ? new HourPoemType(true) :
                                             new HourPoemType(false),
             2, 1,
             null, false, true, true));
   }
 
   /**
    * @param field the field to copy
    * @return a minute field
    */
   public Field<Integer> minuteField(Field<Date> field) {
 
     Calendar when = when(field);
 
     // This isn't meant to be used, so we don't try to localize it
 
     String displayName = field.getDisplayName() + " (minutes)";
 
     return new Field<Integer>(
         when == null ? null : new Integer(when.get(Calendar.MINUTE)),
         new BaseFieldAttributes<Integer>(
             field.getName() + minuteSuffix, displayName, null,
             field.getType().getNullable() ? new MinutePoemType(true) :
                                             new MinutePoemType(false),
             2, 1,
             null, false, true, true));
   }
 
   /**
    * @param field the field to copy
    * @return a second field
    */
   public Field<Integer> secondField(Field<Date> field) {
 
     Calendar when = when(field);
 
     // This isn't meant to be used, so we don't try to localize it
 
     String displayName = field.getDisplayName() + " (seconds)";
 
     return new Field<Integer>(
         when == null ? null : new Integer(when.get(Calendar.SECOND)),
         new BaseFieldAttributes<Integer>(
             field.getName() + secondSuffix, displayName, null,
             field.getType().getNullable() ? new SecondPoemType(true) :
                                             new SecondPoemType(false),
             2, 1,
             null, false, true, true));
   }
 }