/**
    * Copyright 2004-2014 The Kuali Foundation
    *
    * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
    *
   * 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.kuali.kpme.core.calendar;
  
  import java.io.Serializable;
  import java.util.ArrayList;
  import java.util.List;
  
  import org.joda.time.DateTime;
  import org.kuali.kpme.core.api.calendar.CalendarParentContract;
  import org.kuali.kpme.core.calendar.entry.CalendarEntry;
  import org.kuali.kpme.core.calendar.web.CalendarWeek;
  import org.kuali.kpme.core.service.HrServiceLocator;
  
  public abstract class CalendarParent implements Serializable, CalendarParentContract {
  
  	private static final long serialVersionUID = 8840878349037013345L;
  	private List<CalendarWeek> weeks = new ArrayList<CalendarWeek>();
      private CalendarEntry calendarEntry;
      private DateTime beginDateTime;
      private DateTime endDateTime;
  
      public CalendarParent(CalendarEntry calendarEntry) {
          this.calendarEntry = calendarEntry;
          if (calendarEntry != null) {
              this.beginDateTime = calendarEntry.getBeginPeriodLocalDateTime().toDateTime(HrServiceLocator.getTimezoneService().getUserTimezoneWithFallback());
              this.endDateTime = calendarEntry.getEndPeriodLocalDateTime().toDateTime(HrServiceLocator.getTimezoneService().getUserTimezoneWithFallback());
          }
      }
  
      protected CalendarParent() {
      }
  
  
      public DateTime getBeginDateTime() {
          return beginDateTime;
      }
  
      public void setBeginDateTime(DateTime beginDateTime) {
          this.beginDateTime = beginDateTime;
      }
  
      public DateTime getEndDateTime() {
          return endDateTime;
      }
  
      public void setEndDateTime(DateTime endDateTime) {
          this.endDateTime = endDateTime;
      }
  
      public CalendarEntry getCalendarEntry() {
          return calendarEntry;
      }
  
      public void setCalendarEntry(CalendarEntry calendarEntry) {
          this.calendarEntry = calendarEntry;
      }
  
      public List<CalendarWeek> getWeeks() {
          return weeks;
      }
  
      public void setWeeks(List<CalendarWeek> weeks) {
          this.weeks = weeks;
      }
  
      /**
       * Provides the calendar title / heading. If the Pay Calendar entry spans
       * multiple months, you get Abbreviated Month name + year of both the
       * beginning month and the ending month.
       *
       * @return String for calendar title use.
       */
      public String getCalendarTitle() {
          StringBuilder sb = new StringBuilder();
  
          if (getBeginDateTime().getMonthOfYear() == getEndDateTime().getMonthOfYear() ||
                  (getBeginDateTime().getMonthOfYear() != getEndDateTime().getMonthOfYear()
                          && getEndDateTime().getDayOfMonth() == 1 && getEndDateTime().getSecondOfDay() == 0)) {
              sb.append(getBeginDateTime().toString("MMMM y"));
          } else {
              sb.append(getBeginDateTime().toString("MMM y"));
              sb.append(" - ");
              sb.append(getEndDateTime().toString("MMM y"));
          }
  
         return sb.toString();
     }
 
     /**
      * Assumption of 7 "days" per week, or 7 "blocks" per row.
      *
      * @return A list of string titles for each row block (day)
      */
     public List<String> getCalendarDayHeadings() {
         List<String> dayStrings = new ArrayList<String>(7);
         // always render from Sunday
         int firstDay = 0 - getBeginDateTime().getDayOfWeek();
         int lastDay = firstDay + 7;
 
         if (getBeginDateTime().getMinuteOfDay() == 0) {
             // "Standard" days.
             for (int i = firstDay; i < lastDay; i++) {
                 DateTime currDay = getBeginDateTime().plusDays(i);
                 dayStrings.add(currDay.toString("E"));
             }
         } else {
             // Day Split Strings
             for (int i = firstDay; i < lastDay; i++) {
                 StringBuilder builder = new StringBuilder("");
                 DateTime currStart = getBeginDateTime().plusDays(i);
                 DateTime currEnd = getBeginDateTime().plusDays(i);
 
                 builder.append(currStart.toString("E HH:mm"));
                 builder.append(" - ");
                 builder.append(currEnd.toString("E HH:mm"));
 
                 dayStrings.add(builder.toString());
             }
         }
 
         return dayStrings;
     }
 
 }