public class AVService {
  public static void countDoing(String doingObjectId, CountCallback countCallback) {
    AVQuery<AVObject> query = new AVQuery<AVObject>("DoingList");
    query.whereEqualTo("doingListChildObjectId", doingObjectId);
    Calendar c = Calendar.getInstance();
    c.add(Calendar.MINUTE, -10);
    // query.whereNotEqualTo("userObjectId", userId);
    query.whereGreaterThan("createdAt", c.getTime());
    query.countInBackground(countCallback);
  }

  //Use callFunctionMethod
  @SuppressWarnings({"unchecked", "rawtypes"})
  public static void getAchievement(String userObjectId) {
    Map<String, Object> parameters = new HashMap<String, Object>();
    parameters.put("userObjectId", userObjectId);
    AVCloud.callFunctionInBackground("hello", parameters,
        new FunctionCallback() {
          @Override
          public void done(Object object, AVException e) {
            if (e == null) {
              Log.e("at", object.toString());// processResponse(object);
            } else {
              // handleError();
            }
          }
        });
  }

  public static void createDoing(String userId, String doingObjectId) {
    AVObject doing = new AVObject("DoingList");
    doing.put("userObjectId", userId);
    doing.put("doingListChildObjectId", doingObjectId);
    doing.saveInBackground();
  }

  public static void requestPasswordReset(String email, RequestPasswordResetCallback callback) {
    AVUser.requestPasswordResetInBackground(email, callback);
  }

  public static void findDoingListGroup(FindCallback<AVObject> findCallback) {
    AVQuery<AVObject> query = new AVQuery<AVObject>("DoingListGroup");
    query.orderByAscending("Index");
    query.findInBackground(findCallback);
  }

  public static void findChildrenList(String groupObjectId, FindCallback<AVObject> findCallback) {
    AVQuery<AVObject> query = new AVQuery<AVObject>("DoingListChild");
    query.orderByAscending("Index");
    query.whereEqualTo("parentObjectId", groupObjectId);
    query.findInBackground(findCallback);
  }

  public static void initPushService(Context ctx) {
    PushService.setDefaultPushCallback(ctx, LoginActivity.class);
    PushService.subscribe(ctx, "public", LoginActivity.class);
    AVInstallation.getCurrentInstallation().saveInBackground();
  }

  public static void signUp(String username, String password, String email, SignUpCallback signUpCallback) {
    AVUser user = new AVUser();
    user.setUsername(username);
    user.setPassword(password);
    user.setEmail(email);
    user.signUpInBackground(signUpCallback);
  }

  public static void logout() {
    AVUser.logOut();
  }

  public static void createAdvice(String userId, String advice, SaveCallback saveCallback) {
    AVObject doing = new AVObject("SuggestionByUser");
    doing.put("UserObjectId", userId);
    doing.put("UserSuggestion", advice);
    doing.saveInBackground(saveCallback);
  }
}