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Exchange Web Services (EWS) Java API
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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.recurrence;

import microsoft.exchange.webservices.data.core.EwsServiceXmlReader;
import microsoft.exchange.webservices.data.core.EwsServiceXmlWriter;
import microsoft.exchange.webservices.data.core.EwsUtilities;
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.core.exception.misc.ArgumentOutOfRangeException;
import microsoft.exchange.webservices.data.core.exception.service.local.ServiceXmlSerializationException;
import microsoft.exchange.webservices.data.property.complex.ComplexProperty;
import org.apache.commons.lang3.StringUtils;

import javax.xml.stream.XMLStreamException;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

/**
 * Represents a collection of DayOfTheWeek values.
 */
public final class DayOfTheWeekCollection extends ComplexProperty implements
    Iterable {

  /**
   * The item.
   */
  private List items = new ArrayList();

  /**
   * Initializes a new instance of the class.
   */
  public DayOfTheWeekCollection() {
  }

  /**
   * Convert to string.
   *
   * @param separator the separator
   * @return String representation of collection.
   */
  private String toString(String separator) {
    if (this.getCount() == 0) {
      return "";
    } else {
      // String[] daysOfTheWeekArray = new String[this.getCount()];
      StringBuilder daysOfTheWeekstr = new StringBuilder();

      for (int i = 0; i < this.getCount(); i++) {
        // daysOfTheWeekArray[i] = item.get(i).toString();
        if (daysOfTheWeekstr.length() == 0) {
          daysOfTheWeekstr.append(items.get(i).toString());
        } else {
          daysOfTheWeekstr.append(separator);
          daysOfTheWeekstr.append(items.get(i).toString());
        }
      }

      return daysOfTheWeekstr.toString();
    }
  }

  /**
   * Loads from XML.
   *
   * @param reader         The reader.
   * @param xmlElementName Name of the XML element.
   * @throws Exception the exception
   */
  public void loadFromXml(EwsServiceXmlReader reader, String xmlElementName)
      throws Exception {
    reader.ensureCurrentNodeIsStartElement(XmlNamespace.Types,
        xmlElementName);
    EwsUtilities.parseEnumValueList(DayOfTheWeek.class, this.items, reader.readElementValue(), ' ');
  }

  /**
   * Gets the request version.
   *
   * @param writer         the writer
   * @param xmlElementName the xml element name
   * @throws XMLStreamException the XML stream exception
   * @throws ServiceXmlSerializationException the service xml serialization exception
   */
  @Override public void writeToXml(EwsServiceXmlWriter writer, String xmlElementName)
      throws XMLStreamException, ServiceXmlSerializationException {
    String daysOfWeekAsString = this.toString(" ");

    if (!StringUtils.isEmpty(daysOfWeekAsString)) {
      writer.writeElementValue(XmlNamespace.Types,
          XmlElementNames.DaysOfWeek, daysOfWeekAsString);
    }
  }

  /**
   * Builds string representation of the collection.
   *
   * @return A comma-delimited string representing the collection.
   */
  @Override
  public String toString() {
    return this.toString(",");
  }

  /**
   * Adds a day to the collection if it is not already present.
   *
   * @param dayOfTheWeek The day to add.
   */
  public void add(DayOfTheWeek dayOfTheWeek) {
    if (!this.items.contains(dayOfTheWeek)) {
      this.items.add(dayOfTheWeek);
      this.changed();
    }
  }

  /**
   * Adds multiple days to the collection if they are not already present.
   *
   * @param daysOfTheWeek The days to add.
   */
  public void addRange(Iterator daysOfTheWeek) {
    while (daysOfTheWeek.hasNext()) {
      this.add(daysOfTheWeek.next());
    }
  }

  /**
   * Clears the collection.
   */
  public void clear() {
    if (this.getCount() > 0) {
      this.items.clear();
      this.changed();
    }
  }

  /**
   * Remove a specific day from the collection.
   *
   * @param dayOfTheWeek the day of the week
   * @return True if the day was removed from the collection, false otherwise.
   */
  public boolean remove(DayOfTheWeek dayOfTheWeek) {
    boolean result = this.items.remove(dayOfTheWeek);

    if (result) {
      this.changed();
    }
    return result;
  }

  /**
   * Removes the day at a specific index.
   *
   * @param index the index
   * @throws ArgumentOutOfRangeException the argument out of range exception
   */
  public void removeAt(int index) throws ArgumentOutOfRangeException {
    if (index < 0 || index >= this.getCount()) {
      throw new ArgumentOutOfRangeException("index", "index is out of range.");
    }

    this.items.remove(index);
    this.changed();
  }

  /**
   * Gets the DayOfTheWeek at a specific index in the collection.
   *
   * @param index the index
   * @return DayOfTheWeek at index
   */
  public DayOfTheWeek getWeekCollectionAtIndex(int index) {
    return this.items.get(index);
  }

  /**
   * Gets the number of days in the collection.
   *
   * @return the count
   */
  public int getCount() {
    return this.items.size();
  }

  /*
   * (non-Javadoc)
   *
   * @see java.lang.Iterable#iterator()
   */
  @Override
  public Iterator iterator() {
    return this.items.iterator();
  }

}