/*
    * DavMail POP/IMAP/SMTP/CalDav/LDAP Exchange Gateway
    * Copyright (C) 2010  Mickael Guessant
    *
    * This program is free software; you can redistribute it and/or
    * modify it under the terms of the GNU General Public License
    * as published by the Free Software Foundation; either version 2
    * of the License, or (at your option) any later version.
    *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
   */
  package davmail.exchange.ews;
  
  import davmail.exchange.XMLStreamUtil;
  
  import javax.xml.stream.XMLStreamReader;
  import java.io.IOException;
  import java.io.Writer;
  
  /**
   * GetUserAvailability method.
   */
  public class GetUserAvailabilityMethod extends EWSMethod {
      protected final String attendee;
      protected final String start;
      protected final String end;
      protected String mergedFreeBusy;
      protected final int interval;
  
      /**
       * Build EWS method
       *
       * @param attendee attendee email address
       * @param start    start date in Exchange zulu format
       * @param end      end date in Exchange zulu format
       * @param interval freebusy interval in minutes
       */
      public GetUserAvailabilityMethod(String attendee, String start, String end, int interval) {
          super("FreeBusy", "GetUserAvailabilityRequest");
          this.attendee = attendee;
          this.start = start;
          this.end = end;
          this.interval = interval;
      }
  
      @Override
      protected void writeSoapBody(Writer writer) throws IOException {
          // write UTC timezone
          writer.write("<t:TimeZone>" +
                  "<t:Bias>0</t:Bias>" +
                  "<t:StandardTime>" +
                  "<t:Bias>0</t:Bias>" +
                  "<t:Time>02:00:00</t:Time>" +
                  "<t:DayOrder>1</t:DayOrder>" +
                  "<t:Month>3</t:Month>" +
                  "<t:DayOfWeek>Sunday</t:DayOfWeek>" +
                  "</t:StandardTime>" +
                  "<t:DaylightTime>" +
                  "<t:Bias>0</t:Bias>" +
                  "<t:Time>02:00:00</t:Time>" +
                  "<t:DayOrder>1</t:DayOrder>" +
                  "<t:Month>10</t:Month>" +
                  "<t:DayOfWeek>Sunday</t:DayOfWeek>" +
                  "</t:DaylightTime>" +
                  "</t:TimeZone>");
          // write attendee address
          writer.write("<m:MailboxDataArray>" +
                  "<t:MailboxData>" +
                  "<t:Email>" +
                  "<t:Address>");
          writer.write(attendee);
          writer.write("</t:Address>" +
                  "</t:Email>" +
                  "<t:AttendeeType>Required</t:AttendeeType>" +
                  "</t:MailboxData>" +
                  "</m:MailboxDataArray>");
          // freebusy range
          writer.write("<t:FreeBusyViewOptions>" +
                  "<t:TimeWindow>" +
                  "<t:StartTime>");
          writer.write(start);
          writer.write("</t:StartTime>" +
                  "<t:EndTime>");
          writer.write(end);
          writer.write("</t:EndTime>" +
                  "</t:TimeWindow>" +
                  "<t:MergedFreeBusyIntervalInMinutes>" + interval + "</t:MergedFreeBusyIntervalInMinutes>" +
                  "<t:RequestedView>MergedOnly</t:RequestedView>" +
                  "</t:FreeBusyViewOptions>");
      }
  
      @Override
     protected void handleCustom(XMLStreamReader reader) {
         if (XMLStreamUtil.isStartTag(reader, "MergedFreeBusy")) {
             this.mergedFreeBusy = XMLStreamUtil.getElementText(reader);
         }
     }
 
     /**
      * Get merged freebusy string.
      *
      * @return freebusy string
      */
     public String getMergedFreeBusy() {
         return mergedFreeBusy;
     }
 }