public static Long checkNumberOfNewLocalImages() {
    Long nImages = getNumberOfLocalImages();
    LocalInfo localindb = LocalInfo.get((long) 1);

    return nImages - localindb.numberOfImages;
  }
  public static void checkTag(Instagram instagram) {
    Logger.info("----TAG-----------------------");

    // check if the tag is in db
    if (TagInfo.contains((long) 1)) {
      // tag found, check if  it's the right tag
      if (TagInfo.contains(appDisplayNameTag)) {
        // tag is already in db, start the tag scheduler (tagWatchdog)
        Logger.info("		tag is in the db");
        displayTagInfo(); // tag info in the db

        // display local folder path
        Logger.info("		local folder: " + urlPath);

      } else {
        // old tag is in the db, update it with the new one
        Logger.info("		old tag is in the db, update the old tag");
        // delete the old tag, add the new tag
        Logger.info("		delete old tag");
        TagInfo.delete((long) 1);
        Logger.info("		add the new tag");
        TagInfo.addNew(
            new TagInfo(appDisplayNameTag, getNumberOfImagesByTag(instagram, appDisplayNameTag)));
        displayTagInfo();

        // delete old images from the image db
        Logger.info("		delete old images");
        deleteAllImagesFormDb();
        // add new images to the db
        Logger.info("		add the new images");
        addImagesToDB(instagram);

        // local
        // add new local folder info
        Logger.info("		delete old local info");
        LocalInfo.delete((long) 1);
        Logger.info("		add new local info");
        LocalInfo.addNew(new LocalInfo(urlPath, getNumberOfLocalImages()));
        Logger.info(
            "         localPath: "
                + LocalInfo.get((long) 1).urlPath
                + " nImages: "
                + LocalInfo.get((long) 1).numberOfImages);
        // add loacal images to the db
        addLocalImagesToDb();
      }
    } else {
      // add the new tag to db
      Logger.info("		tag is not in the db");
      Logger.info("		add the new tag");
      TagInfo.addNew(
          new TagInfo(appDisplayNameTag, getNumberOfImagesByTag(instagram, appDisplayNameTag)));
      displayTagInfo();

      // add images of the new tag to the db
      Logger.info("		add the new images");
      addImagesToDB(instagram);

      // local
      // add local folder info
      Logger.info("		add new local info");
      LocalInfo.addNew(new LocalInfo(urlPath, getNumberOfLocalImages()));
      Logger.info(
          "         localPath: "
              + LocalInfo.get((long) 1).urlPath
              + " nImages: "
              + LocalInfo.get((long) 1).numberOfImages);
      // add loacal images to the db
      addLocalImagesToDb();
    }
  } // checkTag