/*
 * 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.messaging;

import microsoft.exchange.webservices.data.core.EwsServiceXmlReader;
import microsoft.exchange.webservices.data.core.EwsUtilities;
import microsoft.exchange.webservices.data.core.ExchangeService;
import microsoft.exchange.webservices.data.core.XmlElementNames;
import microsoft.exchange.webservices.data.core.enumeration.service.error.ConnectionFailureCause;
import microsoft.exchange.webservices.data.core.enumeration.service.PhoneCallState;
import microsoft.exchange.webservices.data.core.exception.service.local.ServiceLocalException;
import microsoft.exchange.webservices.data.property.complex.ComplexProperty;

/**
 * Represents a phone call.
 */
public final class PhoneCall extends ComplexProperty {

  /**
   * The Constant successfullResponseText.
   */
  private final static String SuccessfullResponseText = "OK";

  /**
   * The Constant successfullResponseCode.
   */
  private final static int SuccessfullResponseCode = 200;

  /**
   * The service.
   */
  private ExchangeService service;

  /**
   * The state.
   */
  private PhoneCallState state;

  /**
   * The connection failure cause.
   */
  private ConnectionFailureCause connectionFailureCause;

  /**
   * The sip response text.
   */
  private String sipResponseText;

  /**
   * The sip response code.
   */
  private int sipResponseCode;

  /**
   * The id.
   */
  private PhoneCallId id;

  /**
   * PhoneCall Constructor.
   *
   * @param service the service
   */
  public PhoneCall(ExchangeService service) {
    EwsUtilities.ewsAssert(service != null, "PhoneCall.ctor", "service is null");

    this.service = service;
    this.state = PhoneCallState.Connecting;
    this.connectionFailureCause = ConnectionFailureCause.None;
    this.sipResponseText = PhoneCall.SuccessfullResponseText;
    this.sipResponseCode = PhoneCall.SuccessfullResponseCode;
  }

  /**
   * PhoneCall Constructor.
   *
   * @param service the service
   * @param id      the id
   */
  protected PhoneCall(ExchangeService service, PhoneCallId id) {
    this(service);
    this.id = id;
  }

  /**
   * Refreshes the state of this phone call.
   *
   * @throws Exception the exception
   */
  public void refresh() throws Exception {
    PhoneCall phoneCall = service.getUnifiedMessaging()
        .getPhoneCallInformation(this.id);
    this.state = phoneCall.getState();
    this.connectionFailureCause = phoneCall.getConnectionFailureCause();
    this.sipResponseText = phoneCall.getSipResponseText();
    this.sipResponseCode = phoneCall.getSipResponseCode();
  }

  /**
   * Disconnects this phone call.
   *
   * @throws Exception the exception
   */
  public void disconnect() throws Exception {
    // If call is already disconnected, throw exception
    //
    if (this.state == PhoneCallState.Disconnected) {
      throw new ServiceLocalException("The phone call has already been disconnected.");
    }

    this.service.getUnifiedMessaging().disconnectPhoneCall(this.id);
    this.state = PhoneCallState.Disconnected;
  }

  /**
   * Tries to read an element from XML.
   *
   * @param reader the reader
   * @return True if element was read.
   * @throws Exception the exception
   */
  @Override
  public boolean tryReadElementFromXml(EwsServiceXmlReader reader)
      throws Exception {
    if (reader.getLocalName().equals(XmlElementNames.PhoneCallState)) {
      this.state = reader.readElementValue(PhoneCallState.class);
      return true;
    } else if (reader.getLocalName().equals(
        XmlElementNames.ConnectionFailureCause)) {
      this.connectionFailureCause = reader
          .readElementValue(ConnectionFailureCause.class);
      return true;
    } else if (reader.getLocalName()
        .equals(XmlElementNames.SIPResponseText)) {
      this.sipResponseText = reader.readElementValue();
      return true;
    } else if (reader.getLocalName()
        .equals(XmlElementNames.SIPResponseCode)) {
      this.sipResponseCode = reader.readElementValue(Integer.class);
      return true;
    } else {
      return false;
    }

  }

  /**
   * Gets a value indicating the last known state of this phone call.
   *
   * @return the state
   */
  public PhoneCallState getState() {
    return state;
  }

  /**
   * Gets the SIP response text of this phone call.
   *
   * @return the sip response text
   */
  public String getSipResponseText() {
    return sipResponseText;
  }

  /**
   * Gets the SIP response code of this phone call.
   *
   * @return the sip response code
   */
  public int getSipResponseCode() {
    return sipResponseCode;
  }

  /**
   * Gets a value indicating the reason why this phone call failed to connect.
   *
   * @return the connection failure cause
   */
  public ConnectionFailureCause getConnectionFailureCause() {
    return connectionFailureCause;
  }

}