public (bool ValidationResult, string ValidationMessage) ValidateGetNewChatMessages(Guid chatUid, Guid?messageUid)
{
if (!_chatRepository.CheckChatExistence(chatUid).Result)
{
return(false, ErrorDictionary.GetErrorMessage(19, _culture));
}
if (messageUid.HasValue && !_chatRepository.CheckChatMessageExistence(messageUid.Value).Result)
{
return(false, ErrorDictionary.GetErrorMessage(11, _culture));
}
return(true, string.Empty);
}