/*
    *  Copyright 2001-2005 Stephen Colebourne
    *
    *  Licensed under the Apache License, Version 2.0 (the "License");
    *  you may not use this file except in compliance with the License.
    *  You may obtain a copy of the License at
    *
    *      http://www.apache.org/licenses/LICENSE-2.0
    *
   *  Unless required by applicable law or agreed to in writing, software
   *  distributed under the License is distributed on an "AS IS" BASIS,
   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   *  See the License for the specific language governing permissions and
   *  limitations under the License.
   */
  package org.joda.time.chrono;
  
  import org.joda.time.DateTimeConstants;
  import org.joda.time.DateTimeFieldType;
  import org.joda.time.DurationField;
  import org.joda.time.ReadablePartial;
  import org.joda.time.field.PreciseDurationDateTimeField;
  
  /**
   * Provides time calculations for the week of a week based year component of time.
   *
   * @author Guy Allard
   * @author Stephen Colebourne
   * @author Brian S O'Neill
   * @since 1.1, refactored from GJWeekOfWeekyearDateTimeField
   */
  final class BasicWeekOfWeekyearDateTimeField extends PreciseDurationDateTimeField {
  
      private static final long serialVersionUID = -1587436826395135328L;
  
      private final BasicChronology iChronology;
  
      /**
       * Restricted constructor
       */
      BasicWeekOfWeekyearDateTimeField(BasicChronology chronology, DurationField weeks) {
          super(DateTimeFieldType.weekOfWeekyear(), weeks);
          iChronology = chronology;
      }
  
      /**
       * Get the week of a week based year component of the specified time instant.
       * 
       * @see org.joda.time.DateTimeField#get(long)
       * @param instant  the time instant in millis to query.
       * @return the week of the year extracted from the input.
       */
      public int get(long instant) {
          return iChronology.getWeekOfWeekyear(instant);
      }
  
      public DurationField getRangeDurationField() {
          return iChronology.weekyears();
      }
  
      // 1970-01-01 is day of week 4, Thursday. The rounding methods need to
      // apply a corrective alignment since weeks begin on day of week 1, Monday.
  
      public long roundFloor(long instant) {
          return super.roundFloor(instant + 3 * DateTimeConstants.MILLIS_PER_DAY)
              - 3 * DateTimeConstants.MILLIS_PER_DAY;
      }
  
      public long roundCeiling(long instant) {
          return super.roundCeiling(instant + 3 * DateTimeConstants.MILLIS_PER_DAY)
              - 3 * DateTimeConstants.MILLIS_PER_DAY;
      }
  
      public long remainder(long instant) {
          return super.remainder(instant + 3 * DateTimeConstants.MILLIS_PER_DAY);
      }
  
      public int getMinimumValue() {
          return 1;
      }
  
      public int getMaximumValue() {
          return 53;
      }
  
      public int getMaximumValue(long instant) {
          int weekyear = iChronology.getWeekyear(instant);
          return iChronology.getWeeksInYear(weekyear);
      }
  
      public int getMaximumValue(ReadablePartial partial) {
          if (partial.isSupported(DateTimeFieldType.weekyear())) {
              int weekyear = partial.get(DateTimeFieldType.weekyear());
              return iChronology.getWeeksInYear(weekyear);
          }
          return 53;
      }
  
      public int getMaximumValue(ReadablePartial partial, int[] values) {
         int size = partial.size();
         for (int i = 0; i < size; i++) {
             if (partial.getFieldType(i) == DateTimeFieldType.weekyear()) {
                 int weekyear = values[i];
                 return iChronology.getWeeksInYear(weekyear);
             }
         }
         return 53;
     }
 
     protected int getMaximumValueForSet(long instant, int value) {
         return value > 52 ? getMaximumValue(instant) : 52;
     }
 
     /**
      * Serialization singleton
      */
     private Object readResolve() {
         return iChronology.weekOfWeekyear();
     }
 }