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/*
 * The MIT License
 * Copyright (c) 2012 Microsoft Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package microsoft.exchange.webservices.data.property.complex.availability;

import microsoft.exchange.webservices.data.core.EwsServiceXmlReader;
import microsoft.exchange.webservices.data.core.XmlElementNames;
import microsoft.exchange.webservices.data.core.enumeration.property.time.DayOfTheWeek;
import microsoft.exchange.webservices.data.core.enumeration.misc.XmlNamespace;
import microsoft.exchange.webservices.data.misc.availability.LegacyAvailabilityTimeZone;
import microsoft.exchange.webservices.data.property.complex.ComplexProperty;
import microsoft.exchange.webservices.data.property.complex.time.TimeZoneDefinition;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

/**
 * Represents the working hours for a specific time zone.
 */
public final class WorkingHours extends ComplexProperty {

  /**
   * The time zone.
   */
  private TimeZoneDefinition timeZone;

  /**
   * The days of the week.
   */
  private Collection daysOfTheWeek =
      new ArrayList();

  /**
   * The start time.
   */
  private long startTime;

  /**
   * The end time.
   */
  private long endTime;

  /**
   * Instantiates a new working hours.
   */
  public WorkingHours() {
    super();
  }

  /**
   * Tries to read element from XML.
   *
   * @param reader accepts EwsServiceXmlReader
   * @return True if element was read
   * @throws Exception throws Exception
   */
  @Override
  public boolean tryReadElementFromXml(EwsServiceXmlReader reader)
      throws Exception {
    if (reader.getLocalName().equals(XmlElementNames.TimeZone)) {
      LegacyAvailabilityTimeZone legacyTimeZone =
          new LegacyAvailabilityTimeZone();
      legacyTimeZone.loadFromXml(reader, reader.getLocalName());

      this.timeZone = legacyTimeZone.toTimeZoneInfo();

      return true;
    }
    if (reader.getLocalName().equals(XmlElementNames.WorkingPeriodArray)) {
      List workingPeriods = new ArrayList();

      do {
        reader.read();

        if (reader.isStartElement(XmlNamespace.Types,
            XmlElementNames.WorkingPeriod)) {
          WorkingPeriod workingPeriod = new WorkingPeriod();

          workingPeriod.loadFromXml(reader, reader.getLocalName());

          workingPeriods.add(workingPeriod);
        }
      } while (!reader.isEndElement(XmlNamespace.Types,
          XmlElementNames.WorkingPeriodArray));

      // Availability supports a structure that can technically represent
      // different working
      // times for each day of the week. This is apparently how the
      // information is stored in
      // Exchange. However, no client (Outlook, OWA) either will let you
      // specify different
      // working times for each day of the week, and Outlook won't either
      // honor that complex
      // structure if it happens to be in Exchange (OWA goes through XSO
      // which doesn't either
      // honor the structure).
      // So here we'll do what Outlook and OWA do: we'll use the start and
      // end times of the
      // first working period, but we'll use the week days of all the
      // periods.

      this.startTime = workingPeriods.get(0).getStartTime();
      this.endTime = workingPeriods.get(0).getEndTime();

      for (WorkingPeriod workingPeriod : workingPeriods) {
        for (DayOfTheWeek dayOfWeek : workingPeriods.get(0)
            .getDaysOfWeek()) {
          if (!this.daysOfTheWeek.contains(dayOfWeek)) {
            this.daysOfTheWeek.add(dayOfWeek);
          }
        }
      }

      return true;
    } else {
      return false;
    }

  }

  /**
   * Gets the time zone to which the working hours apply.
   *
   * @return the time zone
   */
  public TimeZoneDefinition getTimeZone() {
    return timeZone;
  }

  /**
   * Gets the working days of the attendees.
   *
   * @return the days of the week
   */
  public Collection getDaysOfTheWeek() {
    return daysOfTheWeek;
  }

  /**
   * Gets the time of the day the attendee starts working.
   *
   * @return the start time
   */
  public long getStartTime() {
    return startTime;
  }

  /**
   * Gets the time of the day the attendee stops working.
   *
   * @return the end time
   */
  public long getEndTime() {
    return endTime;
  }

}