public string GetMyAccountBalance(TranWithTags transactionInWork)
        {
            if (transactionInWork?.MyAccount == null || !transactionInWork.MyAccount.Is("Мои"))
            {
                return("было ххх - стало ххх");
            }

            var balanceBefore =
                _db.TransWithTags.Sum(a => a.AmountForAccount(transactionInWork.MyAccount, transactionInWork.Currency, transactionInWork.Timestamp.AddMilliseconds(-1)));

            return(BuildTip(balanceBefore, balanceBefore + transactionInWork.AmountForAccount(transactionInWork.MyAccount, transactionInWork.Currency), transactionInWork.Currency));
        }
        public string GetMySecondAccountBalance(TranWithTags transactionInWork)
        {
            if (transactionInWork == null || transactionInWork.MySecondAccount == null || !transactionInWork.MySecondAccount.Is("Мои"))
            {
                return("было ххх - стало ххх");
            }

            if (transactionInWork.Operation == OperationType.Перенос)
            {
                var balanceBefore =
                    _db.TransWithTags.Sum(a => a.AmountForAccount(transactionInWork.MySecondAccount, transactionInWork.Currency, transactionInWork.Timestamp.AddMilliseconds(-1)));

                return(BuildTip(balanceBefore, balanceBefore + transactionInWork.AmountForAccount(transactionInWork.MySecondAccount, transactionInWork.Currency), transactionInWork.Currency));
            }
            else // OperationType.Обмен
            {
                var balanceBefore =
                    _db.TransWithTags.Sum(a => a.AmountForAccount(transactionInWork.MySecondAccount, transactionInWork.CurrencyInReturn, transactionInWork.Timestamp.AddMilliseconds(-1)));

                return(BuildTip(balanceBefore, balanceBefore + transactionInWork.AmountForAccount(transactionInWork.MySecondAccount, transactionInWork.CurrencyInReturn), transactionInWork.CurrencyInReturn));
            }
        }