/**
   * Receive a new image sharing invitation
   *
   * @param session Image sharing session
   */
  public void receiveImageSharingInvitation(ImageTransferSession session) {
    if (logger.isActivated()) {
      logger.info("Receive image sharing invitation from " + session.getRemoteContact());
    }

    // Extract number from contact
    String number = PhoneUtils.extractNumberFromUri(session.getRemoteContact());

    // Update rich call history
    RichCall.getInstance()
        .addCall(
            number,
            session.getSessionID(),
            RichCallData.EVENT_INCOMING,
            session.getContent(),
            RichCallData.STATUS_STARTED);

    // Add session in the list
    ImageSharingSession sessionApi = new ImageSharingSession(session);
    addImageSharingSession(sessionApi);

    // Broadcast intent related to the received invitation
    Intent intent = new Intent(RichCallApiIntents.IMAGE_SHARING_INVITATION);
    intent.putExtra("contact", number);
    intent.putExtra("contactDisplayname", session.getRemoteDisplayName());
    intent.putExtra("sessionId", session.getSessionID());
    intent.putExtra("filename", session.getContent().getName());
    intent.putExtra("filesize", session.getContent().getSize());
    intent.putExtra("filetype", session.getContent().getEncoding());
    intent.putExtra("thumbnail", session.getThumbnail());
    AndroidFactory.getApplicationContext().sendBroadcast(intent);
  }
  /**
   * Initiate an image sharing session
   *
   * @param contact Contact
   * @param file Image file
   * @param thumbnail Thumbnail option
   * @throws ServerApiException
   */
  public IImageSharingSession initiateImageSharing(String contact, String file, boolean thumbnail)
      throws ServerApiException {
    if (logger.isActivated()) {
      logger.info("Initiate an image sharing session with " + contact);
    }

    // Check permission
    ServerApiUtils.testPermission();

    // Test IMS connection
    ServerApiUtils.testIms();

    try {
      // Create an image content
      FileDescription desc = FileFactory.getFactory().getFileDescription(file);
      MmContent content = ContentManager.createMmContentFromUrl(file, desc.getSize());

      // Initiate a sharing session
      ImageTransferSession session =
          Core.getInstance()
              .getRichcallService()
              .initiateImageSharingSession(contact, content, thumbnail);

      // Update rich call history
      RichCall.getInstance()
          .addCall(
              contact,
              session.getSessionID(),
              RichCallData.EVENT_OUTGOING,
              session.getContent(),
              RichCallData.STATUS_STARTED);

      // Add session in the list
      ImageSharingSession sessionApi = new ImageSharingSession(session);
      addImageSharingSession(sessionApi);
      return sessionApi;
    } catch (Exception e) {
      if (logger.isActivated()) {
        logger.error("Unexpected error", e);
      }
      throw new ServerApiException(e.getMessage());
    }
  }