/*
 * 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.core.request;

import microsoft.exchange.webservices.data.core.EwsServiceXmlReader;
import microsoft.exchange.webservices.data.core.EwsServiceXmlWriter;
import microsoft.exchange.webservices.data.core.ExchangeService;
import microsoft.exchange.webservices.data.core.XmlElementNames;
import microsoft.exchange.webservices.data.core.response.AttendeeAvailability;
import microsoft.exchange.webservices.data.core.response.ServiceResponseCollection;
import microsoft.exchange.webservices.data.core.response.SuggestionsResponse;
import microsoft.exchange.webservices.data.core.enumeration.availability.AvailabilityData;
import microsoft.exchange.webservices.data.core.enumeration.misc.ExchangeVersion;
import microsoft.exchange.webservices.data.core.enumeration.misc.error.ServiceError;
import microsoft.exchange.webservices.data.core.enumeration.misc.XmlNamespace;
import microsoft.exchange.webservices.data.misc.availability.AttendeeInfo;
import microsoft.exchange.webservices.data.misc.availability.AvailabilityOptions;
import microsoft.exchange.webservices.data.misc.availability.GetUserAvailabilityResults;
import microsoft.exchange.webservices.data.misc.availability.LegacyAvailabilityTimeZone;
import microsoft.exchange.webservices.data.misc.availability.TimeWindow;

/**
 * Represents a GetUserAvailability request.
 */
public final class GetUserAvailabilityRequest extends SimpleServiceRequestBase<GetUserAvailabilityResults> {

  /**
   * The attendees.
   */
  private Iterable<AttendeeInfo> attendees;

  /**
   * The time window.
   */
  private TimeWindow timeWindow;

  /**
   * The requested data.
   */
  private AvailabilityData requestedData =
      AvailabilityData.FreeBusyAndSuggestions;

  /**
   * The options.
   */
  private AvailabilityOptions options;

  /**
   * Initializes a new instance of the "GetUserAvailabilityRequest" class.
   *
   * @param service the service
   * @throws Exception
   */
  public GetUserAvailabilityRequest(ExchangeService service)
      throws Exception {
    super(service);
  }

  /**
   * Gets the name of the XML element.
   *
   * @return XML element name.
   */
  @Override public String getXmlElementName() {
    return XmlElementNames.GetUserAvailabilityRequest;
  }

  /**
   * Gets a value indicating whether free/busy data is requested.
   *
   * @return true, if is free busy view requested
   */
  public boolean isFreeBusyViewRequested() {
    return this.requestedData == AvailabilityData.FreeBusy ||
        this.requestedData == AvailabilityData.
            FreeBusyAndSuggestions;
  }

  /**
   * Gets a value indicating whether suggestions are requested.
   *
   * @return true, if is suggestions view requested
   */
  public boolean isSuggestionsViewRequested() {
    return this.requestedData == AvailabilityData.Suggestions ||
        this.requestedData == AvailabilityData.
            FreeBusyAndSuggestions;
  }

  /**
   * Validate request.
   *
   * @throws Exception the exception
   */
  @Override
  protected void validate() throws Exception {
    super.validate();

    this.options.validate(this.timeWindow.getDuration());
  }

  /**
   * Writes XML elements.
   *
   * @param writer the writer
   * @throws Exception the exception
   */
  @Override
  protected void writeElementsToXml(EwsServiceXmlWriter writer)
      throws Exception {
    // Only serialize the TimeZone property against an Exchange 2007 SP1
    // server.
    // Against Exchange 2010, the time zone is emitted in the request's SOAP
    // header.
    //if (writer.getService().getRequestedServerVersion() ==
    //ExchangeVersion.Exchange2007_SP1) {
    LegacyAvailabilityTimeZone legacyTimeZone =
        new LegacyAvailabilityTimeZone();

    legacyTimeZone.writeToXml(writer, XmlElementNames.TimeZone);


    writer.writeStartElement(XmlNamespace.Messages,
        XmlElementNames.MailboxDataArray);

    for (AttendeeInfo attendee : this.attendees) {
      attendee.writeToXml(writer);
    }

    writer.writeEndElement(); // MailboxDataArray

    this.options.writeToXml(writer, this);
  }

  /**
   * Gets the name of the response XML element.
   *
   * @return XML element name
   */
  @Override
  protected String getResponseXmlElementName() {
    return XmlElementNames.GetUserAvailabilityResponse;
  }

  /**
   * {@inheritDoc}
   */
  @Override
  protected GetUserAvailabilityResults parseResponse(EwsServiceXmlReader reader)
      throws Exception {
    GetUserAvailabilityResults serviceResponse =
        new GetUserAvailabilityResults();

    if (this.isFreeBusyViewRequested()) {
      serviceResponse
          .setAttendeesAvailability(new ServiceResponseCollection<AttendeeAvailability>());

      reader.readStartElement(XmlNamespace.Messages,
          XmlElementNames.FreeBusyResponseArray);

      do {
        reader.read();

        if (reader.isStartElement(XmlNamespace.Messages,
            XmlElementNames.FreeBusyResponse)) {
          AttendeeAvailability freeBusyResponse =
              new AttendeeAvailability();

          freeBusyResponse.loadFromXml(reader,
              XmlElementNames.ResponseMessage);

          if (freeBusyResponse.getErrorCode().equals(
              ServiceError.NoError)) {
            freeBusyResponse.loadFreeBusyViewFromXml(reader,
                this.options.getRequestedFreeBusyView());
          }

          serviceResponse.getAttendeesAvailability().add(
              freeBusyResponse);
        }
      } while (!reader.isEndElement(XmlNamespace.Messages,
          XmlElementNames.FreeBusyResponseArray));
    }

    if (this.isSuggestionsViewRequested()) {
      serviceResponse.setSuggestionsResponse(new SuggestionsResponse());

      reader.readStartElement(XmlNamespace.Messages,
          XmlElementNames.SuggestionsResponse);

      serviceResponse.getSuggestionsResponse().loadFromXml(reader,
          XmlElementNames.ResponseMessage);

      if (serviceResponse.getSuggestionsResponse().getErrorCode().equals(
          ServiceError.NoError)) {
        serviceResponse.getSuggestionsResponse()
            .loadSuggestedDaysFromXml(reader);
      }

      reader.readEndElement(XmlNamespace.Messages,
          XmlElementNames.SuggestionsResponse);
    }

    return serviceResponse;
  }

  /**
   * Gets the request version.
   *
   * @return Earliest Exchange version in which this request is supported.
   */
  @Override
  protected ExchangeVersion getMinimumRequiredServerVersion() {
    return ExchangeVersion.Exchange2007_SP1;
  }

  /**
   * Executes this request.
   *
   * @return Service response.
   * @throws Exception the exception
   */
  public GetUserAvailabilityResults execute() throws Exception {
    return internalExecute();
  }

  /**
   * Gets  the attendees.
   *
   * @return the attendees
   */
  public Iterable<AttendeeInfo> getAttendees() {
    return attendees;
  }

  /**
   * Sets the attendees.
   *
   * @param attendees the new attendees
   */
  public void setAttendees(Iterable<AttendeeInfo> attendees) {
    this.attendees = attendees;
  }

  /**
   * Gets the time window in which to retrieve user availability
   * information.
   *
   * @return the time window
   */
  public TimeWindow getTimeWindow() {
    return timeWindow;
  }

  /**
   * Sets the time window.
   *
   * @param timeWindow the new time window
   */
  public void setTimeWindow(TimeWindow timeWindow) {
    this.timeWindow = timeWindow;
  }

  /**
   * Gets  a value indicating what data is requested (free/busy and/or
   * suggestions).
   *
   * @return the requested data
   */
  public AvailabilityData getRequestedData() {
    return requestedData;
  }

  /**
   * Sets the requested data.
   *
   * @param requestedData the new requested data
   */
  public void setRequestedData(AvailabilityData requestedData) {
    this.requestedData = requestedData;
  }

  /**
   * Gets an object that allows you to specify options controlling the
   * information returned by the GetUserAvailability request.
   *
   * @return the options
   */
  public AvailabilityOptions getOptions() {
    return options;
  }

  /**
   * Sets the options.
   *
   * @param options the new options
   */
  public void setOptions(AvailabilityOptions options) {
    this.options = options;
  }

}