public async Task <Result> SetUserInterests(User user, int[] interestIds) { if (interestIds == null || interestIds.Length <= 0) { return(Result.Ok()); } var interestsResult = await _interestRepository.GetInterestsByIds(interestIds); if (!interestsResult.IsSuccessed) { return(Result.Fail(interestsResult.GetErrorString())); } var interests = interestsResult.Value; if (AreInvalidInterestIdsPresent(interestIds, interests)) { return(Result.Fail(Invalid_Interest)); } user.SetInterests(interests); return(Result.Ok()); }